CN113825243B

CN113825243B - Uplink data processing method, system, device and storage medium

Info

Publication number: CN113825243B
Application number: CN202111389695.3A
Authority: CN
Inventors: 魏波; 周楠清; 唐懿夫; 樊旭云; 丁琦
Original assignee: Chengdu Airui Wireless Technology Co ltd
Current assignee: Chengdu Airui Wireless Technology Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2022-02-08
Anticipated expiration: 2041-11-23
Also published as: CN113825243A

Abstract

The invention discloses an uplink data processing method, a system, a device and a storage medium, which are used for a distributed base station system, wherein the method comprises the following steps: the method comprises the steps of taking a physical random access signal corresponding to the same target user equipment as a target physical random access signal group based on a preset rule, generating and sending a corresponding physical random access response signal for each target physical random access signal group, acquiring a detection result of a physical random access channel corresponding to each signal source equipment in the target physical random access signal group based on the received physical random access signal, and then generating an uplink data processing strategy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source equipment in the target physical random access signal group, so that the problem of bottom noise rise in signal transmission and combination is solved, the uplink data receiving gain is improved, and the capacity of the whole distributed wireless communication system is improved.

Description

Uplink data processing method, system, device and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a system, an apparatus, and a storage medium for processing uplink data in a distributed base station system.

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 (RU), and connect the two units through an optical fiber. In network deployment, the BBU, the core network and the wireless network indicating equipment are centralized in a machine room, and then are connected with the RUs deployed on the 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 or DU) which completes the modulation and demodulation of baseband signals, the second part is an expansion 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 a protocol stack 100 of a physical layer (PHY layer), a medium access indication layer (MAC layer) and a radio resource indication layer (RRC layer) in an access network of a distributed base station.

First, Radio Resource management, indication, and scheduling are performed by a Radio Resource Control (RRC) protocol. Specifically, the following functions are mainly included: broadcasting of system information; paging information (paging); establishing and releasing RRC (radio Resource control) connection; transmitting NAS (Non-Access Stratum) information including session management, user management, security management, and charging management; transmitting AS (Access stratum) information including radio bearer management, radio channel processing and encryption; transmission of user radio access capability; configuring wireless resources; measurement configuration and reporting; and a movement indication.

Then, an ip (internet Protocol) header of an upper layer is compressed and decompressed through a Packet Data Convergence Protocol (PDCP), and user Data is transmitted and maintained. Meanwhile, encryption and decryption of user data and an indication plane protocol are supported, so that the integrity of the data is guaranteed.

Subsequently, the segmentation and retransmission services are provided to the user through a Radio Link Control (RLC).

Next, the Media Access Control (MAC) defines the way data frames are propagated, physical addressing and logical topology on the medium. For data transmission, the MAC protocol first determines whether data can be transmitted, and if so, the data and indication information are transmitted to the physical layer in a prescribed format. For data reception, the MAC layer removes header information from the received data from the PHY and transmits the data to an upper layer.

Then, a data path is provided for the data side device through a Physical layer Protocol (PHY) to transmit data.

Finally, data is transmitted and received via a radio frequency link (RF chain).

Three units in the distributed base station: the functional partitioning of BBU (or DU), rHub (or EU), and RU, as a general understanding, is generally believed that BBU (or DU) will implement the processing functions of RRC, PDCP, High RLC (High-RLC), Low RLC (Low-RLC), High MAC (High-MAC), Low MAC (Low-MAC), and High PHY (High-PHY) protocol modules, rHub will implement the processing functions of Low PHY (Low-PHY) protocol modules, and RU will implement the processing functions of RF modules. But this division of functional blocks is not exclusive. For example, rHub can also perform High-PHY and MAC layer protocol processing.

As described above, rHub in the existing distributed base station system has a function of aggregating and forwarding data. In fact, when the rHub receives the upstream data of multiple RUs, or multiple RUs and other rhubs, or BBUs receives the upstream data of multiple rhubs:

if the data is only merged during uploading, for the rHub, if the data on the rHub without data transmission is also merged, background noise is raised; when the transmission of the uplink data uses a common public radio interface (CPRI interface) to transmit time domain data, multipath fading may be caused due to different time delays of different paths, however, when the transmission of the uplink data uses an eccri interface to transmit frequency domain data, a large amount of channel resources are required for hardware implementation due to the need to convert the uncombined time domain data into frequency domain data to transmit on the eccri interface; additional information may be required for data merging, for example, an existing pre-stored domain or a new custom domain is required to indicate in the current CPRI or eccri interface, which may increase signaling load. If only one path of data is selected for uploading during uploading, signal gain caused by combination cannot be obtained, and for the situation with low signal-to-noise ratio, the signal can even be submerged by noise; the useful signals are discarded due to the missing selection or the error selection of the signals when the data selection is carried out.

As described above, there are problems in selecting and combining uplink data in the conventional distributed base station system. Therefore, for the distributed base station system, a processing method for combining and/or selecting uplink data needs to be provided.

Under the architecture of the distributed base station system, for a random access process based on collision (contention), if multiple user equipments under the coverage of different signal source equipments select the same preamble and the same random access resource for data transmission, the multiple user equipments send their respective Msg3 uplink signals on the same Msg3 resource, and if an extension unit (rHub) in the distributed base station system directly performs indifferent combination on all uplink data received on the Msg3 resource at this time, the Msg3 signals sent by the multiple user equipments sending the same preamble collide, and thus the Msg3 signal transmission fails. In this case, the ue can only re-initiate the random access procedure, thereby reducing the probability of successful access of the ue.

Similarly, when merging the subsequent uplink data of the user equipment which has successfully accessed, the extension unit (rHub) also has a path which does not actually have a useful signal, the problem of the rising of the background noise is caused.

Disclosure of Invention

In view of the above drawbacks of the prior art, the present invention provides an uplink data processing method, system, device and storage medium for a distributed base station system, so as to solve the problem of bottom noise rise in uplink data signal transmission and merging in the prior art and reduce the probability of collision of Msg3 sent by multiple user devices.

In order to achieve the above object, an embodiment of the present invention provides an uplink data processing method, used in a distributed base station system, where the method includes: receiving a physical random access signal from at least one user equipment; estimating the association relation of physical random access signals with the same lead code based on a preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group; and generating and sending a corresponding physical random access response signal for each target physical random access signal group, acquiring a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, then generating an uplink data processing strategy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, and processing subsequent uplink data associated with the physical random access response signal according to the uplink data processing strategy.

The embodiment of the present invention further provides an uplink data processing system, which is used for a distributed base station system, and the system includes: the system comprises a relation decision node and a target physical random access signal group, wherein the relation decision node is used for receiving a physical random access signal from at least one user equipment, estimating the association relation of the physical random access signals with the same lead code based on a preset rule, and taking each group of the physical random access signals with the same lead code and associated as the target physical random access signal group; a policy generation node, configured to, for each target physical random access signal group, obtain, based on a received physical random access signal, a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group, and then generate, based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, an uplink data processing policy corresponding to the target physical random access signal group; and the data processing node is used for processing the subsequent uplink data associated with the uplink data processing strategy according to each uplink data processing strategy.

The embodiment of the invention also provides an uplink data processing method, which is used for a distributed base station system and comprises the following steps: receiving a physical random access signal from at least one user equipment, and generating and sending a corresponding physical random access response signal; estimating the association relation of physical random access signals with the same lead code based on a preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group; channel attribute information carried by each physical random access signal in the corresponding target physical random access signal group is obtained based on the received physical random access signals.

The embodiment of the present invention further provides an uplink data processing apparatus, which is used for a distributed base station system, and the apparatus includes: a receiving module, configured to receive a physical random access signal from at least one user equipment; a response module for generating and transmitting a physical random access response signal corresponding to the physical random access signal; the pre-estimation module is used for pre-estimating the association relation of the physical random access signals with the same lead code based on a preset rule, and taking each group of the physical random access signals with the same lead code and associated as a target physical random access signal group; and the acquisition module is used for acquiring the channel attribute information carried by each physical random access signal in the corresponding target physical random access signal group based on the received physical random access signals.

The embodiment of the invention also provides an uplink data processing method, which is used for a distributed base station system and comprises the following steps: receiving and forwarding a physical random access signal from at least one user equipment to trigger generation of at least one uplink data processing strategy; processing subsequent uplink data associated with each uplink data processing strategy based on the uplink data processing strategy; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

The embodiment of the present invention further provides an uplink data processing apparatus, which is used for a distributed base station system, and the apparatus includes: a receiving module, configured to receive and forward a physical random access signal from at least one user equipment to trigger generation of at least one uplink data processing policy; and a processing module for processing subsequent upstream data associated with each upstream data processing policy based on the upstream data processing policy; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

The embodiment of the invention also provides an uplink data processing method, which is used for a distributed base station system and comprises the following steps: receiving a time domain physical random access signal from at least one user equipment and converting the time domain physical random access signal into a frequency domain physical random access signal; forwarding the frequency domain physical random access signal to trigger generation of at least one uplink data processing strategy; converting all subsequently received time domain uplink data into frequency domain uplink data; for each uplink data processing strategy, weighting the subsequent frequency domain uplink data associated with the uplink data processing strategy based on the weighting value determined by the uplink data processing strategy and then forwarding the weighted frequency domain uplink data; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

The embodiment of the present invention further provides an uplink data processing apparatus, which is used for a distributed base station system, and the apparatus includes: a receiving and converting module, configured to receive a time domain physical random access signal from at least one ue, convert the time domain physical random access signal into a frequency domain physical random access signal, forward the frequency domain physical random access signal to trigger generation of at least one uplink data processing policy, and convert all subsequently received time domain uplink data into frequency domain uplink data; the weighting module is used for weighting the subsequent frequency domain uplink data associated with the uplink data processing strategy based on the weighting value determined by the uplink data processing strategy and forwarding the weighted frequency domain uplink data; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the method for processing uplink data for a distributed base station system according to any of the above embodiments is implemented.

In the uplink data processing method, system device and storage medium for a distributed base station system provided by the invention, a physical random access signal corresponding to the same target user equipment is taken as a target physical random access signal group based on a preset rule, a corresponding physical random access response signal is generated and sent aiming at each target physical random access signal group, the detection result of a physical random access channel corresponding to each signal source equipment in the target physical random access signal group is obtained based on the received physical random access signal, then an uplink data processing strategy corresponding to the target physical random access signal group is generated based on the detection result of the physical random access channel of each signal source equipment in the target physical random access signal group, the bottom noise lifting problem in signal transmission and combination is improved, and the uplink data receiving gain is improved, and thereby increase the capacity of the overall distributed wireless communication system.

Drawings

The technical solution and other advantages of the present invention will become apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.

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

Fig. 2A to fig. 2C respectively show schematic diagrams of networking topologies of the distributed base station system of the present invention.

Fig. 3 is a flowchart illustrating an uplink data processing method for a distributed base station system according to an embodiment of the present invention.

Fig. 4A is a schematic diagram illustrating that an uplink data processing strategy for a distributed base station system according to an embodiment of the present invention performs frequency domain data selection on multiple paths of data.

Fig. 4B is a schematic diagram illustrating that another uplink data processing strategy for a distributed base station system according to an embodiment of the present invention performs frequency domain data selection on multiple channels of data.

Fig. 4C is a schematic diagram illustrating that another uplink data processing strategy for a distributed base station system according to an embodiment of the present invention performs frequency domain data selection on multiple channels of data.

Fig. 4D is a schematic diagram illustrating that another uplink data processing strategy for a distributed base station system according to an embodiment of the present invention performs frequency domain data selection on multiple channels of data.

Fig. 5A is a schematic diagram illustrating that an uplink data processing strategy for a distributed base station system according to an embodiment of the present invention performs frequency domain data weighted combination on multiple paths of data.

Fig. 5B is a schematic diagram illustrating that the uplink data processing strategy for the distributed base station system according to the embodiment of the present invention performs frequency domain data weighted combination on multiple paths of data.

Fig. 5C is a schematic diagram illustrating that the uplink data processing strategy for the distributed base station system according to the embodiment of the present invention performs frequency domain data weighted combination on multiple paths of data.

Fig. 5D is a schematic diagram illustrating that the uplink data processing strategy for the distributed base station system according to the embodiment of the present invention performs frequency domain data weighted combination on multiple paths of data.

Fig. 5E is a schematic diagram illustrating that another uplink data processing strategy for a distributed base station system according to the embodiment of the present invention performs frequency domain data weighting and combining on multiple paths of data.

Fig. 6 shows a block diagram of an uplink data processing system for a distributed base station according to an embodiment of the present invention.

Fig. 7 is a block diagram illustrating an uplink data processing apparatus for a distributed base station system according to an embodiment of the present invention.

Fig. 8 is a block diagram illustrating an uplink data processing apparatus for a distributed base station system according to an embodiment of the present invention.

Fig. 9 is a block diagram illustrating an uplink data processing apparatus for a distributed base station system 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. 2A to fig. 2C respectively show networking topology diagrams of the distributed base station system of the present invention. In particular, the distributed base station system comprises at least one host unit (BBU or DU) configured to be able to perform at least the processing of data in communication and to complete the modulation and demodulation of baseband signals, as an example only one host unit being shown in the figure; at least one extension unit (rHub) connected to the host unit and configured to perform at least forwarding and merging of uplink and downlink data; at least one Remote Unit (RU) coupled to the expansion unit and configured to perform at least reception and transmission of uplink and downlink radio frequency signals; and at least one communication terminal (not shown) configured to communicate directly with the remote unit.

As shown in fig. 2A to fig. 2C in sequence, the structure of the distributed base station system in the embodiment of the present invention may be of the following three types: star distributed systems, chain distributed systems, and hybrid distributed systems. Specifically, as shown in fig. 2A, in a star distributed system, one BBU within the same cell connects one or more rhubs, each of which is connected to one or more RUs, and the rhubs may be interconnected; as shown in fig. 2B, in the chain-type distributed system, one BBU in the same cell is connected to one master rHub, the remaining multiple slave rhubs are communicated with the BBU through the rHub at the previous stage, each rHub is connected to one or more RUs, and the multiple rhubs may or may not have any difference in function (e.g., master rHub and slave rHub); as shown in fig. 2C, in the hybrid distributed system (i.e., combination of the star distributed system and the chain distributed system), one DU in the same cell is respectively connected to two rhubs, one rHub is connected to a third rHub other than the two rhubs, the third rHub is communicated with the DU through a previous-stage rHub, and each rHub is connected to one or more RUs.

The user equipment referred to in the embodiments of the present invention, also referred to as a communication terminal, is a device that provides voice and/or data connectivity to a user, and the communication terminal may be a mobile terminal, such as a mobile phone (or referred to as a "cellular" phone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device, which exchanges voice and/or data with a radio access network. For example, the terminal device may be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), or the like. Common communication terminals include, for example: the mobile terminal includes a mobile phone, a tablet computer, a notebook computer, a handheld computer, a Mobile Internet Device (MID), and a wearable device, such as a smart watch, a smart bracelet, a pedometer, and the like, but the embodiment of the present application is not limited thereto. A communication terminal may communicate with one or more core networks through a Radio Access Network (RAN).

Fig. 3 is a flowchart illustrating an uplink data processing method for a distributed base station system according to an embodiment of the present invention. The uplink data processing method provided by the embodiment of the invention can be applied to the distributed base station systems shown in fig. 2A to 2C.

Referring to fig. 3, the uplink data processing method in the distributed base station system according to the embodiment of the present invention includes the following steps:

step S10, receiving a physical random access signal from at least one user equipment;

step S20, estimating the association relation of the physical random access signals with the same lead code based on the preset rule, and taking each group of physical random access signals with the same lead code and the association as a target physical random access signal group;

step S30, for each target physical random access signal group, generating and sending a corresponding physical random access response signal, obtaining a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, then generating an uplink data processing policy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, and processing subsequent uplink data associated with the physical random access response signal according to the uplink data processing policy.

The steps S10 to S30 will be specifically described below.

In step S10, a host unit in the distributed base station system receives a physical random access signal from at least one User Equipment (UE) through a Physical Random Access Channel (PRACH), and each Cell (Cell) is typically allocated with 64 preamble (preamble) sequences, and the 64 preamble (preamble) sequences are generated by cyclic shifting one or more ZC root sequences. When the user equipment performs random access, a preamble sequence of a current cell is randomly selected to initiate random access (Msg 1), specifically, the user equipment sends a random access request carrying the preamble sequence through a Physical Random Access Channel (PRACH) in an initial random access process, and a host unit generally completes detection of a received signal of the PRACH of at least one path to obtain a PRACH detection result corresponding to each path, and obtains the preamble sequence and a label corresponding to the preamble sequence by detecting the PRACH. The host unit calculates a corresponding physical Random Access wireless Network Temporary Identity (RA-RNT) according to a formula defined in a standard specification based on the PRACH position of each received physical Random Access signal, and then returns a Random Access response message (Msg 2) to the user equipment.

In step S20, after receiving the physical random signal and detecting the preamble sequence carried by the physical random signal, the association relationship of the physical random access signal with the same preamble is pre-estimated based on the preset rule, for example, it is known that RU #1 and RU #3 are from the same floor and cover the same user equipment, and RU #5 is from a different floor and covers another user equipment based on the preset rule; if preamble ID # A is detected in RU #1, RU #3 and RU #5, then the association set of preamble ID # A is { RU #1, RU #3 and RU #5}, if there is a preset rule, one association set of preamble ID # A can be estimated and updated based on the preset rule to be { preamble ID # A- (RU #1, RU # 3) } and the other association set of preamble ID # A is { preamble ID # A-RU #5 }; therefore, based on the preset rule, the association relationship between the RUs transmitting the physical random signals with the same preamble can be estimated, and the physical random access signals with the same preamble and associated with each other are taken as a target physical random access signal group, and each target physical random access signal group can be regarded as an association set corresponding to the same preamble (preamble) sequence.

Then, the host unit performs sequence correlation, radio frequency data combination and peak detection on a root sequence corresponding to the preamble of each target physical random access signal group, determines a preamble (preamble) sequence used by the user equipment and a received power thereof, calculates a noise power, and then allocates a communication resource to the user equipment via, for example, a Physical Downlink Control Channel (PDCCH).

In step S30, for each target physical random access signal group, a corresponding physical random access response signal is generated and transmitted, for example, the host unit sends a physical random access response signal of the uplink grant to the user equipment (Msg 2), and the user equipment receives the physical random access response signal of the uplink grant, sending a feedback message (Msg 3) associated with the physical random access response signal to the host unit, determining whether the random access is successful by burst detection and validity decision, and if so, then, the voice data or other data of the User Equipment (UE) is uploaded in the Physical Uplink Shared Channel (PUSCH) of the association set (e.g., { preamble ID # a (RU #1, RU # 3) }) of the extension unit and/or the remote unit corresponding to the target physical random access signal group. Then, for each target physical random access signal group, obtaining a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on channel attribute information carried by a received physical random access signal, generating an uplink data processing strategy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of a signal source device in the target physical random access signal group, and processing subsequent uplink data of the signal source device associated with the physical random access response signal according to the uplink data processing strategy.

It should be noted that, in the distributed base station system, since there may be a situation where Msg3 signals sent by multiple user equipments selecting the same preamble under the coverage of different signal source equipments collide when combining, and thus cause a failure in Msg3 signal transmission, if the number of user equipments associated with the target set of physical random access signals is greater than 1, the user equipments can only re-initiate the random access procedure. Thereby, uniqueness of the user equipments associated with the target set of physical random access signals, i.e. one user equipment associated with the target set of physical random access signals, can be achieved. Therefore, the uplink data processing strategy corresponding to the user equipment can be generated based on the detection result of the physical random access channel of each signal source equipment in the target physical random access signal group, and the subsequent uplink data associated with the user equipment can be processed according to the uplink data processing strategy.

The uplink data processing method for the distributed base station provided by the embodiment of the invention can realize that:

when a host unit in the distributed base station system processes physical random access signals with the same lead code uploaded from non-same user equipment, the physical random access signals corresponding to the same target user equipment are used as a target physical random access signal group based on a preset rule, for each target physical random access signal group, the detection result of the physical random access channel of each signal source equipment corresponding to the target physical random access signal group is obtained based on the received physical random access signals, and an uplink data processing strategy corresponding to the target physical random access signal group is generated based on the detection result of the physical random access channel of each signal source equipment in the target physical random access signal group, so that the problem of bottom noise lifting in signal transmission and combination is solved, and the uplink data receiving gain is improved, and thus the capacity of the overall distributed wireless communication system, while interference of subsequent uplink data between user equipments using the same preamble (but physically separable in practice) can be avoided.

Illustratively, the signal source device is an expansion unit and/or a remote unit;

specifically, the host unit may estimate whether physical random access signals having the same preamble come from the same user equipment based on a preset rule; for each lead code, if a group of physical random access signals with the lead code is estimated to come from the same user equipment, taking the group of physical random access signals as the target physical random access signal group; wherein the preset rule comprises pre-stored prior information or physical random access signals with the same preamble are from the same user equipment by default. In addition, for non-contention random access, in this scenario, the physical random access signals with the same preamble may also be from the same user equipment by default.

The a priori information comprises at least physical distribution information of at least one first type device in the distributed base station system. Wherein the first type of device is an expansion unit and/or a remote unit. The pre-stored prior information includes the physical distribution of the expansion unit and/or remote units, such as floors, placement locations, etc.

Further, physical random access signals from a plurality of first type devices whose physical space distances from each other are smaller than a preset threshold are estimated as physical random access signals from the same user equipment.

Illustratively, if preamble ID # a is detected on all of RU #1, RU #3, and RU #5, the association set of preamble ID # a is { RU #1, RU #3, RU #5}, and if it is estimated that RU #1 and RU #3 are on the same floor and RU #5 is on another different floor based on preset rules, it can be determined that preamble ID # a detected on RU #1 and RU #3 and preamble ID # a detected on RU #5 are from different User Equipments (UEs). At this time, one association set corresponding to preamble ID # A is updated to be { preamble ID # A- (RU #1, RU # 3) }, and the other association set is { preamble ID # A-RU #5 }. Therefore, aiming at preamble ID # A, two physical random access signals from RU #1 and RU #3 are used as a target physical random access signal group; one physical random access signal from RU #5 is used as another target physical random access signal group.

It should be understood that the above-mentioned a priori information includes physical distribution information of the first type devices, and based on the physical distribution information of the first type devices, it may be known which first type devices the User Equipment (UE) is in the coverage area of, or an association relationship between the user equipment and the first type devices covering the user equipment.

Further, for each preamble, the physical random access signals having the same preamble are by default from the same user equipment, and then the set of physical random access signals is taken as the target set of physical random access signals.

Illustratively, if preamble ID # a is detected in all of RU #1, RU #3 and RU #5, then the association set of preamble ID # a is { RU #1, RU #3 and RU #5}, then the default RU #1, RU #3 and RU #5 are from the same user equipment based on the preset rule, and then the three-way phy random access signal from RU #1, RU #3 and RU #5 is taken as a target phy random access signal set.

Further, for each target physical random access signal group, after receiving a feedback message associated with a physical random access response signal corresponding to the target physical random access signal group, determining whether access of user equipment corresponding to the target physical random access signal group is successful based on the feedback message, and if access of the user equipment corresponding to the target physical random access signal group is successful, taking the user equipment as the target user equipment, and processing uplink data subsequently transmitted by at least one physical channel associated with the target user equipment according to the uplink data processing policy corresponding to the target physical random access signal group, and if access of the user equipment corresponding to the target physical random access signal group is failed, discarding the uplink data processing policy corresponding to the target physical random access signal group and triggering the user equipment associated with the target physical random access signal group to retransmit a new physical random access signal group And accessing the signal.

In a distributed base station system, a host unit receives physical random access signals uploaded by a plurality of extension units and/or remote units, and optionally, in some embodiments, may upload all physical random access signals on each extension unit and/or remote unit (e.g., frequency domain signals or time domain signals of all repeated symbols of the physical random access signals on each extension unit and/or remote unit). Optionally, in other embodiments, if the amount of data to be forwarded is limited, only a part of the physical random access signals on a plurality of extension units and/or remote units may be uploaded (for example, one or several of the multiple repeated symbols of the physical random access signal on each extension unit and/or remote unit, or a time domain signal or a frequency domain signal or data compression and decompression are performed).

Further, before predicting whether the physical random access signals with the same preamble code come from the same user equipment based on the preset rules, determining the association relationship between each physical random access signal and at least one first type device for transmitting the physical random access signal based on a first preset rule.

In an embodiment of the present invention, the determining of the association relationship between each physical random access signal and the at least one first type device based on the first preset rule includes one of the following:

(1) and determining the association relation between each received physical random access signal and the first type equipment for transmitting the physical random access signal based on a preset time sequence mapping relation. For example, based on the preset timing mapping relationship, the first physical random access signal is set to originate from RU #1, the second physical random access signal is set to originate from RU #2, the third physical random access signal is set to originate from RU #3, and so on.

(2) And each physical random access signal which is forwarded carries a corresponding source information indication, wherein the source information indication is used for marking the association relationship between the physical random access signal and the first type equipment which transmits the physical random access signal. For example, for a physical random access signal in an nr (new radio) short format, the ecpri forwarding protocol specifies that 144I/Q data can be uploaded for the physical random access signal, where I corresponds to a real part (16 bit) and Q corresponds to an imaginary part (16 bit), but actually and effectively transmitted data is 139I/Q data, so that the remaining positions of the I/Q data can be used to transfer the serial number of the first type device. For example, the sequence number of the extension unit is conveyed by the real part in the 140 th I/Q data, and the sequence number of the remote unit is conveyed by the imaginary part in the 140 th I/Q data. In this embodiment of the present invention, for each target physical random access signal group, the uplink data processing policy generated based on the physical random access signal in the target physical random access signal group and corresponding to the target physical random access signal group includes one of an uplink data selection processing policy and an uplink data combining processing policy. It should be noted that, in the embodiment of the present invention, the uplink data selection processing policy and the uplink data combining processing policy are independent from each other, that is, either an uplink data selection processing policy corresponding to the target physical random access signal group is generated, or an uplink data combining processing policy corresponding to the target physical random access signal group is generated.

Specifically, for each target physical random access signal group, the second type device in the distributed base station system detects channel attribute information carried by each physical random access signal in the target physical random access signal group, and generates the uplink data processing policy corresponding to the target physical random access signal group according to the channel attribute information.

Illustratively, the second type of device is a host unit, and if it is determined that the association set of a target set of physical random access signals is { preamble ID # A- (RU #1, RU # 3) }, channel attribute information carried by physical random access signals uploaded in RU #1 and RU #3 associated with the target physical random access signal is acquired based on the received physical random access signals respectively by a host unit in the distributed base station system, for example, the host unit acquires channel attribute information such as peak power, signal-to-noise ratio value, time offset, etc. of physical random access signals uploaded in RU #1 and RU #3 based on the received physical random access signals, respectively, and generating an uplink data processing strategy corresponding to the target physical random access signal group according to the channel attribute information on the RU #1 and the RU # 3.

In the embodiment of the present invention, for each target physical random access signal group, an uplink data selection processing policy including selection indication information is generated based on a second preset rule, or an uplink data combining processing policy including combining indication information is generated based on a third preset rule.

In this embodiment of the present invention, the generating of the uplink data selection processing policy including the selection indication information based on the second preset rule includes one of the following items:

(1) and for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected peak power value of each physical random access signal in the target physical random access signal group, and selecting the first type device which transmits the physical random access signal with the maximum peak power value as an effective signal source device corresponding to the target physical random access signal group.

(2) And aiming at each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected signal-to-noise ratio of each physical random access signal in the target physical random access signal group, and selecting the first type device which transmits the physical random access signal with the maximum signal-to-noise ratio as the effective signal source device corresponding to the target physical random access signal group.

(3) And for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected time offset of each physical random access signal in the target physical random access signal group, and selecting the first type device of the physical random access signal with the minimum transmission time offset as an effective signal source device corresponding to the target physical random access signal group.

(4) And for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the peak power value and the time offset of each physical random access signal in the target physical random access signal group, and selecting the first type device for transmitting the physical random access signal with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group.

Specifically, for each target physical random access signal group, if command

And/or

The peak power of the physical random access signal transmitted at the upper part is

The time offset is

The joint confidence of the two-tuple consisting of the peak power value and the time offset of each physical random access signal in the target physical random access signal group can be calculated according to the following formula:

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

The smallest absolute value among the time offsets of the corresponding detected physical random access response signals,

indicating that the user equipment is in each

Or

A maximum value among peak powers of the corresponding detected physical random access response signals,

and

representing the corresponding weight coefficients.

(5) And aiming at each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the signal-to-noise ratio and the time offset of each physical random access signal in the target physical random access signal group, and selecting the first type device for transmitting the physical random access signal with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group.

Specifically, for each target physical random access signal group, if command

And/or

The signal-to-noise ratio of the physical random access signal transmitted at the upper part is

The time offset is

The joint confidence of the doublet formed by the signal-to-noise ratio value and the time offset of each physical random access signal in the target physical random access signal group can be calculated according to the following formula:

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

A maximum value among the signal-to-noise values of the corresponding detected physical random access response signals,

and

representing the corresponding weight coefficients.

And selecting indication information contained in each uplink data selection processing strategy indicates effective signal source equipment corresponding to a target physical random access signal group associated with the uplink data selection processing strategy.

It should be noted that each uplink data selection processing policy includes: and only processing the subsequent uplink data transmitted by the effective signal source equipment indicated by the selection indication information in the uplink data selection processing strategy.

In this embodiment of the present invention, the generating of the uplink data merging processing policy including the merging indication information based on the third preset rule includes one of the following items:

(1) and for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected peak power value of each physical random access signal in the target physical random access signal group, and selecting the first type device which transmits at least two physical random access signals with the maximum peak power value as an effective signal source device corresponding to the target physical random access signal group.

(2) And aiming at each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected signal-to-noise ratio of each physical random access signal in the target physical random access signal group, and selecting the first type equipment for transmitting at least two physical random access signals with the maximum signal-to-noise ratio as effective signal source equipment corresponding to the target physical random access signal group.

(3) And for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected time offset of each physical random access signal in the target physical random access signal group, and selecting the first type equipment of at least two physical random access signals with the minimum transmission time offset as effective signal source equipment corresponding to the target physical random access signal group.

(4) And for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the peak power value and the time offset of each physical random access signal in the target physical random access signal group, and selecting the first type device for transmitting at least two physical random access signals with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group.

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

(5) And for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the signal-to-noise ratio and the time offset of each physical random access signal in the target physical random access signal group, and selecting the first type device for transmitting at least two physical random access signals with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group.

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

And combining indication information contained in each uplink data combining processing strategy indicates all effective signal source equipment corresponding to the target physical random access signal group associated with the uplink data combining processing strategy.

It should be noted that each uplink data merging processing policy includes: and only processing the subsequent uplink data transmitted by all the effective signal source devices indicated by the merging indication information in the uplink data merging processing strategy.

In this embodiment of the present invention, for each uplink data merging processing policy, when performing uplink data merging processing, according to merging indication information included in the uplink data merging processing policy and based on a fourth preset rule, a weighted value of each of multiple channels of frequency domain uplink data transmitted by multiple effective signal source devices indicated by the merging indication information is calculated, and according to the calculated weighted value, a weighting operation is performed on the multiple channels of frequency domain uplink data and then the weighted multiple channels of frequency domain uplink data are merged.

Specifically, in some embodiments, the calculating, according to the merge indication information included in the uplink data merge processing policy and based on a fourth preset rule, the weighted values of the multiple frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merge indication information includes:

acquiring the set of valid signal source devices indicated by the merge indication information

Said set

By at least one expansion unit

And/or remote unit

Forming; if order

And/or

The time offset of the physical random access signal of the upper transmission is

Signal to noise ratio of

Peak power of

Wherein

And/or

Then according to one of the following formulas

An

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Representing the index of the frequency domain subcarrier allocated to the target ue corresponding to the uplink data combining processing policy,

a phase compensation value representing the frequency domain sub-carrier allocated by the target user equipment,

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

Further, for each uplink data merging processing strategy, the calculating, according to the merging indication information included in the uplink data merging processing strategy and based on a fourth preset rule, a weighted value of each of the multiple channels of frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merging indication information further includes: allocating the first user equipment to the target user equipment corresponding to the uplink data merging processing strategy

The sub-carriers are in the second

An

And/or

Multiplying the uplink frequency domain signals by weighted values respectively

Then the weighted uplink frequency domain signals are processed according to

Performing a summation operation to combine the second transmission signals from the multiple valid signal source devices indicated by the combining indication information contained in the uplink data combining processing strategy

And multiple paths of frequency domain uplink data on the subcarriers.

In other embodiments, the calculating, according to the combining indication information included in the uplink data combining processing policy and based on a fourth preset rule, the weighted values of the multiple frequency domain uplink data transmitted by the multiple valid signal source devices indicated by the combining indication information includes:

Said set

By at least one expansion unit

And/or remote unit

Forming; if order

And/or

Peak power of

Wherein

And/or

Then according to one of the following formulas

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

And representing the index of the frequency domain subcarrier allocated to the target user equipment corresponding to the uplink data merging processing strategy.

Is sub-carrier in

And/or

On the upstream signal is multiplied by

To perform time offset compensation on the time offset-compensated

And/or

Frequency domain ofThe uplink signals are multiplied by corresponding weighted values respectively

(ii) a To the weighted frequency domain uplink signal according to

Multi-channel frequency domain uplink data on subcarriers; wherein the content of the first and second substances,

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

In the embodiment of the present invention, a host unit in a distributed base station system receives a physical random access signal from at least one user equipment, and first, the host unit in the distributed base station system can obtain a preamble sequence corresponding to each physical random access signal by decoding, and associates a physical random access signal having the same preamble sequence with a first type of device (including an extension unit and/or a remote unit) that transmits the physical random access signal, so as to establish an association relationship between the physical random access signal having the same preamble and the first type of device (including the extension unit and/or the remote unit); and the host unit in the distributed base station system can predict the association relationship between the first type devices (including the extension unit and/or the remote unit) which transmit the physical random access signals with the same lead code based on a preset rule; then, after the user equipment using the preamble is successfully accessed, the association relationship between the first type device (including the extension unit and/or the remote unit) transmitting the preamble and the user equipment can be updated, the physical random access signal having the same preamble and being associated with the same user equipment is used as a target physical random access signal group, for each target physical random access signal group, the detection result of the physical random access channel corresponding to each signal source device in the target physical random access signal group is obtained based on the received physical random access signal, so as to obtain the channel attribute information carried by each physical random access signal in the target physical random access signal group, and the uplink data processing strategy corresponding to the target physical random access signal group is generated according to the channel attribute information, and processing subsequent uplink data of the user equipment according to the uplink data processing strategy.

Illustratively, the host unit in the distributed base station system obtains channel attribute information corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, and then generates an uplink data processing policy corresponding to the target physical random access signal group based on the channel attribute information of each signal source device in the target physical random access signal group.

The steps of the uplink data processing method for the distributed base station system according to the embodiment of the present invention will be specifically described below with reference to application scenarios one to nine.

Application scenario one

As shown in fig. 4A, in this embodiment, the step of receiving, by a Remote Unit (RU) in the distributed base station system, a time domain Physical random access signal from at least one user equipment, converting the time domain Physical random access signal into a frequency domain Physical random access signal is performed by an extension unit (rHub) in the distributed base station system, that is, a Low Physical Layer Protocol (Low PHY) is integrated in the extension unit in the distributed base station system, the multiple time domain Physical random access signals with the same preamble and associated with the same preamble transmitted by the remote unit in the distributed base station system are converted into multiple frequency domain Physical random access signals via the Low PHY in the extension unit in the distributed base station system, and then a host unit in the distributed base station system estimates whether the multiple frequency domain Physical random access signals with the same preamble and associated with the same preamble are from the same user equipment based on a preset rule, which is a priori information, for each lead code, if a group of physical random access signals with the lead code is estimated to come from the same user equipment, the group of physical random access signals is taken as the target physical random access signal group, for each target physical random access signal group, a host unit in the distributed base station system acquires the detection result of the physical random access channel corresponding to each signal source equipment in the target physical random access signal group based on the received physical random access signals, and then based on the detection result of the physical random access channel of each signal source equipment in the target physical random access signal group,

and generating an uplink data selection processing strategy containing selection indication information based on the second preset rule. Namely, the selection indication information and the corresponding uplink data selection processing strategy are generated by a host unit in the distributed base station system. And then, a host unit in the distributed base station system transmits a selection indication and time-frequency resource allocation information of scheduling user equipment corresponding to the target physical random access signal group to an extension unit in the distributed base station system, the extension unit in the distributed base station system performs corresponding frequency domain selection on a plurality of received frequency domain uplink data associated with the same target user equipment according to the selection indication information, and finally transmits a path of selected frequency domain data to the host unit in the distributed base station system, and finally completes an uplink data selection processing strategy corresponding to the target user equipment.

Application scenario two

As shown in fig. 4B, a difference between fig. 4B and fig. 4A is that, in this embodiment, the host unit in the distributed base station system does not generate an uplink data selection processing policy including selection indication information, but transmits the obtained detection result of the channel attribute of the multiple frequency domain physical random access signals corresponding to the target physical random access signal group and the obtained prior information to the extension unit, and simultaneously transmits the time-frequency resource allocation information of the scheduling user equipment corresponding to the target physical random access signal group to the extension unit, and the extension unit generates the uplink data selection processing policy including the selection indication information according to the detection result of the channel attribute of the multiple frequency domain physical random access signals corresponding to the target physical random access signal group and the prior information. Namely, the selection indication information and the corresponding uplink data selection processing strategy are generated by an extension unit in the distributed base station system. And then, the extension unit performs corresponding frequency domain selection on the received multiple frequency domain uplink data associated with the same target user equipment according to the selection indication information, and finally transmits the selected path of frequency domain data to the host unit, thereby finally completing the uplink data selection processing strategy corresponding to the target user equipment.

Application scenario three

As shown in fig. 4C, the difference between fig. 4C and fig. 4A is that, in this embodiment, the Remote Unit (RU) in the distributed base station system receives a time domain Physical random access signal from at least one user equipment, and the step of converting the time domain Physical random access signal into a frequency domain Physical random access signal is still performed by the Remote Unit (RU) in the distributed base station system, that is, a Low Physical Layer Protocol (Low PHY) is integrated in the remote unit in the distributed base station system, and the remote unit in the distributed base station system forwards the frequency domain Physical random access signal to trigger a subsequent uplink data selection processing strategy including selection indication information, and convert all subsequently received time domain uplink data into frequency domain uplink data. Wherein, the Remote Unit (RU) in the distributed base station system is also provided with an intermediate frequency processing unit, and the signal of the intermediate frequency processing unit is converted into frequency domain uplink data through a LOW PHY. It should be understood that, in this embodiment, the selection indication information and the corresponding uplink data selection processing policy may be generated by a host unit in the distributed base station system; alternatively, the selection indication information and the corresponding uplink data selection processing policy may also be generated by an extension unit in the distributed base station system.

Application scenario four

As shown in fig. 4D, the difference between fig. 4D and fig. 4A is that, in this embodiment, a Remote Unit (RU) in the distributed base station system receives a time domain physical random access signal from at least one user equipment, and a host unit in the distributed base station system defaults to a physical random access signal with the same preamble from the same user equipment based on a preset rule, and takes the group of physical random access signals as the target physical random access signal group. For each target physical random access signal group, the host unit in the distributed base station system obtains the detection result of the physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, and then obtains the detection result of the physical random access channel corresponding to each signal source device in the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group.

Generally, if the load of the cell in which the ue is located is heavy, the frequency domain selection of the uplink data is performed on the multiple frequency domain uplink data associated with the target user, and if the load of the cell in which the ue is located is light, it is preferable to perform frequency domain weighted combining of the uplink data on the multiple frequency domain uplink data associated with the target user. In the following application scenarios five to nine, the uplink data processing strategy for performing frequency domain data weighted combination on the multiple paths of data will be described in detail.

Application scenario five

As shown in fig. 5A, in the present embodiment, the Remote Unit (RU) in the distributed base station system receives a time domain Physical random access signal from at least one user equipment, the step of converting the time domain Physical random access signal into a frequency domain Physical random access signal is performed by an extension unit (rHub) in the distributed base station system, that is, a Low Physical Layer Protocol (Low PHY) is integrated in the extension unit in the distributed base station system, the multiple time domain Physical random access signals with the same preamble and associated with the same preamble transmitted by the remote unit in the distributed base station system are converted into multiple frequency domain Physical random access signals via the Low PHY in the extension unit in the distributed base station system, and then the host unit in the distributed base station system detects channel properties of the multiple frequency domain Physical random access signals with the same preamble and associated with the same preamble, and obtaining a detection result of the channel attribute of the multi-channel frequency domain physical random access signals with the same lead code and associated with the lead code, meanwhile, predicting whether the multi-channel frequency domain physical random access signals with the same lead code and associated with the lead code are from the same user equipment or not based on pre-stored prior information, and if a group of physical random access signals with the lead code are predicted to be from the same user equipment, regarding each lead code, taking the group of physical random access signals as the target physical random access signal group.

And for each target physical random access signal group, the host unit generates an uplink data merging processing strategy containing merging indication information according to the detection result of the channel attribute of the multiple channels of frequency domain physical random access signals which correspond to the target physical random access signal groups and have the same lead code and are associated with the target physical random access signals, and based on the third preset rule. That is, the merging indication information and the corresponding uplink data merging processing strategy are generated by the host unit in the distributed base station system, and meanwhile, the merging weight (weighted value) is also generated by the host unit in the distributed base station system. Then, a host unit in the distributed base station system transmits a merging indication, a merging weight and time-frequency resource allocation information of scheduling user equipment corresponding to a target physical random access signal group to an extension unit in the distributed base station system, the extension unit in the distributed base station system performs corresponding frequency domain weighted merging on a plurality of received frequency domain uplink data associated with the same target user equipment according to the merging indication information, and finally transmits the merged frequency domain data to the host unit in the distributed base station system, and finally completes an uplink data merging processing strategy corresponding to the target user equipment.

Application scenario six

As shown in fig. 5B, the difference between fig. 5B and fig. 5A is that, in the present embodiment, the combining weight (weighted value) is generated by the extension unit in the distributed base station system based on the detection result of the channel property of each physical random access signal in all the target physical random access signal groups transmitted by the host unit in the distributed base station system. The method comprises the steps that a host unit in a distributed base station system only transmits time-frequency resource distribution information of scheduling user equipment corresponding to a target physical random access signal group, a detection result of channel attribute information of each physical random access signal in the corresponding target physical random access signal group and prior information to an extension unit in the distributed base station system, the extension unit in the distributed base station system generates an uplink data merging processing strategy containing merging indication information based on the detection result of the channel attribute information of multiple paths of frequency domain physical random access signals relevant to the same target user equipment and the prior information, and generates corresponding merging weights. And then, the extension unit in the distributed base station system performs corresponding frequency domain weighting operation on the received multiple frequency domain uplink data associated with the same target user equipment according to the merging indication information and the corresponding merging weight, then performs merging, finally transmits the merged frequency domain data to the host unit in the distributed base station system, and finally completes the uplink data merging processing strategy corresponding to the target user equipment.

Application scenario seven

As shown in fig. 5C, a difference between fig. 5C and fig. 5A is that, in this embodiment, a host unit in a distributed base station system only generates a set of combining weight parameters corresponding to a target physical random access signal set based on a detection result of obtaining a channel attribute of each physical random access signal in the target physical random access signal set and prior information, where the set of combining weight parameters includes: amount of time offset

And power

Or a time offset

A set of (a); then, the extension unit in the distributed base station system generates a weighted value (combining weight) of the multiple channels of frequency domain uplink data associated with the same target user equipment based on the combining indication of the scheduling user equipment corresponding to the target physical random access signal group, the set of combining weight parameters and the time-frequency resource allocation information transmitted by the host unit in the distributed base station system. The weighted value corresponding to each path of frequency domain uplink data is generated by an extension unit in the distributed base station system based on the combined weight value. And then, the extension unit in the distributed base station system performs corresponding frequency domain weighted combination on a plurality of received frequency domain uplink data associated with the same target user equipment according to the combination indication information and the corresponding combination weight, and finally transmits the combined frequency domain data to the host unit in the distributed base station system, thereby finally completing the uplink data combination processing strategy corresponding to the target user equipment.

In this embodiment, because the host unit in the distributed base station system only transmits the combining indication, the set of combining weight parameters, and the time-frequency resource allocation information of the scheduling user equipment corresponding to the target physical random access signal set, and the calculation of the specific combining weight is performed by the extension unit in the distributed base station system, compared with the application scenario five, the host unit in the distributed base station system does not need to perform the calculation of the combining weight of the uplink combining processing policy, and only transmits the set of combining weight parameters to the extension unit in the distributed base station system, and therefore, the workload (load) and the overhead of the host unit in the distributed base station system can be reduced. Compared with the sixth application scenario, the detection result of the channel attribute of each physical random access signal in the corresponding target physical random access signal group does not need to be transmitted at the transmission interface of the host unit and the extension unit in the distributed base station system, and therefore, the data volume transmitted at the transmission interface of the host unit and the extension unit in the distributed base station system can be reduced.

Application scenario eight

As shown in fig. 5D, the difference between fig. 5D and fig. 5C is that, in this embodiment, the Remote Unit (RU) in the distributed base station system receives the time domain Physical random access signal from at least one user equipment, and the step of converting the time domain Physical random access signal into the frequency domain Physical random access signal is still performed by the Remote Unit (RU) in the distributed base station system, that is, a Low Physical Layer Protocol (Low PHY) is integrated in the remote unit in the distributed base station system, and the remote unit in the distributed base station system forwards the frequency domain Physical random access signal to trigger a subsequent uplink data combining processing strategy including combining indication information and convert all subsequently received time domain uplink data into frequency domain uplink data. Wherein, the Remote Unit (RU) in the distributed base station system is also provided with an intermediate frequency processing unit, and the signal of the intermediate frequency processing unit is converted into frequency domain uplink data through a LOW PHY.

Application scenario nine

As shown in fig. 5E, the difference between fig. 5E and fig. 5D is that in this embodiment, the step of performing the weighting operation on the multiple frequency domain uplink data associated with the same target ue is performed by the remote unit in the distributed base station system based on the weighting value transmitted by the corresponding extension unit in the distributed base station system. Specifically, for each uplink data processing strategy, the extension unit in the distributed base station system generates a combining weight corresponding to the uplink combining processing strategy based on a combining indication of a scheduling user equipment of a corresponding target physical random access signal group transmitted by a host unit in the distributed base station system, a set of combining weight parameters and time-frequency resource allocation information, then, the extension unit in the distributed base station system distributes the weight corresponding to the multiple paths of frequency domain uplink data associated with the same target user equipment to each remote unit associated with the same target user equipment based on the combined weight of the uplink combined processing strategy, and then, and each remote unit associated with the same target user equipment performs weighting operation on the subsequent frequency domain data associated with the uplink data processing strategy based on the determined weighting value, and forwards the weighted frequency domain uplink data. And then, the extension unit in the distributed base station system correspondingly merges the received uplink data weighted by a plurality of frequency domains associated with the same target user equipment, finally transmits the merged frequency domain data to the host unit in the distributed base station system, and finally completes the uplink data merging processing strategy corresponding to the target user equipment.

In this embodiment, since the step of performing the weighting operation on the multiple paths of frequency domain uplink data associated with the same target user equipment is performed by the remote unit in the distributed base station system based on the weighting value transmitted by the corresponding extension unit in the distributed base station system, the forwarding interface of the remote unit in the distributed base station system includes the weighted frequency domain uplink data, and the weighted frequency domain uplink data can significantly improve the signal-to-noise ratio of the uplink data after demodulation, obtain a better signal gain, and reduce the interference of noise compared with the unweighted frequency domain uplink data. Meanwhile, the step of weighting operation is executed by the remote unit in the distributed base station system, so that the operation amount (load) and the overhead of the extension unit in the distributed base station system can be reduced.

It should be understood that, in the above generation process of the uplink data selection processing strategy and the uplink data combining processing strategy, the decision may be made according to the type of random access, and if the random access resource is based on non-collision (contention), the combining processing strategy is better, and if the random access resource is based on collision (contention), the selection processing strategy is better.

Generally, if the random access resource is based on a collision (contention) random access process, it is preferable to determine the probability that the random access collision will occur in the distributed base station system first, and if it is determined that the probability of the random access collision in the distributed base station system is very small, it is more preferable to adopt an uplink data combining processing strategy, because compared with the frequency domain selection of uplink data, frequency domain weighted combining of uplink data is combined after weighted processing of multiple uplink data, so that the signal-to-noise ratio after demodulation of multiple uplink data can be significantly improved, and a better signal gain can be obtained. If the probability of the random access conflict of the distributed base station system is judged to be high, the uplink data selection processing strategy is adopted to be more optimal. In addition, for the determination of the probability of the random access collision of the distributed base station system, generally, the determination may be performed according to the load condition of the cell, and it is generally considered that the probability of collision is low if the load of the cell is light, and in addition, the determination may be performed according to the number of the physical random access signal preambles detected by the historical statistics and the number of the user equipments successfully accessed, if the ratio of the number of the user equipments successfully accessed to the number of the detected physical random access signal preambles is greater than or equal to the threshold value, the probability of collision is considered to be low, and if the ratio of the number of the user equipments successfully accessed to the number of the detected physical random access signal preambles is less than or equal to the threshold value, the probability of collision is considered to be high.

According to another aspect of the present invention, an uplink data processing system for a distributed base station is provided in an embodiment of the present invention.

As shown in fig. 6, the uplink data processing system 200 includes: a relation decision node 210, configured to receive a physical random access signal from at least one user equipment and predict an association relation of physical random access signals with a same preamble based on pre-stored prior information, and use each group of physical random access signals with the same preamble and associated physical random access signals as a target physical random access signal group; a policy generating node 220, configured to generate, for each target physical random access signal group, an uplink data processing policy corresponding to the target physical random access signal group based on a physical random access signal in the target physical random access signal group; and a data processing node 230, configured to process, according to each of the uplink data processing policies, subsequent uplink data associated with the uplink data processing policy.

In this embodiment, the relationship determining node 210 is located in a host unit or an extension unit of a distributed base station system, and the policy generating node 220 and the data processing node 230 may be located in the same or different units of the distributed base station system, for example, the policy generating node 220 and the data processing node 230 may be located in the host unit at the same time, and the policy generating node 220 and the data processing node 230 may be located in the host unit and the extension unit, respectively, which is not limited in this embodiment of the invention.

The uplink data processing system for the distributed base station provided by the embodiment of the invention can realize that:

when a host unit in the distributed base station system processes physical random access signals with the same lead code uploaded from non-same user equipment, the physical random access signals corresponding to the same target user equipment are used as a target physical random access signal group based on pre-stored prior information, and an uplink data processing strategy corresponding to the target physical random access signal group is generated based on the physical random access signals of each target physical random access signal group, so that the problem of bottom noise rise in signal transmission and combination is solved, the uplink data receiving gain is improved, the capacity of the whole distributed wireless communication system is improved, and meanwhile, the interference of subsequent uplink data between user equipment (but can be separated physically) using the same lead code can be avoided.

The specific functions of the present invention for each node and unit in the distributed base station system 200 will be described in detail below with reference to fig. 3, fig. 4A to fig. 4D, and fig. 5A to fig. 5E.

Specifically, the relationship decision node 210 in the uplink data processing system 200 receives physical random access signals from at least one user equipment, obtains a preamble sequence of each physical random access signal by decoding, and associates the physical random access signals with the same preamble sequence with a first type of device (including an extension unit and/or a remote unit) that transmits the physical random access signals, so as to establish an association relationship between the physical random access signals with the same preamble and the first type of device (including the extension unit and/or the remote unit); the relationship decision node 210 may receive or store prior information corresponding to the distributed base station system, and predict an association relationship of physical random access signals having the same preamble based on the prior information; then, after the user equipment using the preamble is successfully accessed, an association relationship between the first type device (including the extension unit and/or the remote unit) transmitting the preamble and the user equipment may be established, and a physical random access signal having the same preamble and associated with the same user equipment may be used as a target physical random access signal group.

After establishing the association relationship of the physical random access signals with the same preamble, the policy generation node 220 in the uplink data processing system 200, for each target physical random access signal group, obtains the detection result of the physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, and then generates the uplink data processing policy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group. And for each target physical random access signal group, the uplink data processing strategy corresponding to the target physical random access signal group is one of an uplink data selection processing strategy and an uplink data combination processing strategy.

Specifically, the policy generating node 220 includes a selection indication generating unit 221 and a merging indication generating unit 222, where the selection indication generating unit 221 is configured to generate, based on a second preset rule, selection indication information included in each uplink data selection processing policy; the merge instruction generating unit 222 is configured to generate merge instruction information included in each uplink data merge processing policy based on a third preset rule.

In an embodiment of the present invention, the generating of the selection indication information included in each uplink data selection processing policy based on the second preset rule includes one of the following items:

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

In this embodiment of the present invention, the merging indication information included in each uplink data merging processing policy generated based on the third preset rule includes one of the following items:

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

Specifically, for each target physical random access signal group, if command

And/or

The time offset is

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

Indicating that the user equipment is in each

Or

indicating that the user equipment is in each

Or

and

representing the corresponding weight coefficients.

The data processing node 230 includes an uplink data selection processing unit 231 and an uplink data merging processing unit 232, where the uplink data selection processing unit 231 is configured to perform selection processing on multiple paths of uplink data associated with each uplink data selection processing policy according to the uplink data selection processing policy; the uplink data merging processing unit 232 is configured to perform merging processing on the multiple paths of uplink data associated with each uplink data merging processing policy according to each uplink data merging processing policy.

The data processing node 230 further comprises a time-frequency transformation unit 233, wherein the time-frequency transformation unit 233 is configured to: and converting the time domain signal of the uplink data into a frequency domain signal.

Specifically, in some embodiments, as shown in fig. 4A to 4B and fig. 5A to 5C, the time-frequency converting unit 233 may be located in an extension unit of the distributed base station system, and multiple time-domain uplink data associated with the same target user equipment and transmitted by a remote unit of the distributed base station system are converted into multiple frequency-domain uplink data by the time-frequency converting unit 233 in the extension unit, so as to facilitate subsequent processing of frequency-domain data processing work associated with each uplink data processing policy according to the uplink data processing policy. Illustratively, the time-frequency conversion unit 233 is a LOW PHY, which is integrated in an extension unit of the distributed base station system.

In other embodiments, as shown in fig. 4C and fig. 5D-5E, the time-frequency conversion unit 233 may be located in a remote unit of the distributed base station system, and the remote unit of the distributed base station system directly transmits multiple frequency-domain uplink data associated with the same target ue, so as to process the frequency-domain data processing task associated with each uplink data processing policy in a subsequent step. Illustratively, the time-frequency conversion unit 233 is a LOW PHY, which is integrated in a remote unit of the distributed base station system.

The data processing node 230 further comprises a weight calculation unit 234, wherein the weight calculation unit 234 is configured to: for each uplink data merging processing strategy, when the uplink data merging processing is executed, according to merging indication information contained in the uplink data merging processing strategy and based on a fourth preset rule, calculating respective weighted values of multiple channels of frequency domain uplink data transmitted by multiple effective signal source devices and indicated by the merging indication information, executing weighting operation on the multiple channels of frequency domain uplink data according to the calculated weighted values, and then merging the weighted multiple channels of frequency domain uplink data.

Specifically, in some embodiments, as shown in fig. 5A, the weight calculation unit 234 may be located in a host unit of the distributed base station system, for example, a weight value (combining weight) of each corresponding uplink data of the multiple frequency domain uplink data associated with the same target ue may be generated in the host unit according to the combining indication information generated by the policy generation node 220, then, the host unit of the distributed base station system transmits the merging indication of the scheduling user equipment corresponding to the target physical random access signal group, the weighted value (merging weight) corresponding to each path of uplink data, and the time-frequency resource allocation information to the extension unit of the distributed base station system, and the extension unit of the distributed base station system performs corresponding frequency domain weighted merging on the multiple paths of frequency domain uplink data associated with the same target user equipment based on the weighted value provided by the weight calculation unit 234 in the host unit of the distributed base station system.

In other embodiments, as shown in fig. 5B-5D, the weight calculating unit 234 may be located in an extension unit of the distributed base station system, and the multiple frequency domain uplink data associated with the same target ue and transmitted by the remote unit of the distributed base station system are weighted and combined by the weight calculating unit 234 in the extension unit, for example, the frequency domain uplink data received at the extension unit may be weighted and combined according to the combining indication information generated by the policy generating node 220.

In other embodiments, as shown in fig. 5E, the weight calculating unit 234 may be respectively located in the remote units of the distributed base station system, for example, a weighted value (combining weight) of each uplink data corresponding to multiple uplink data associated with the same target user equipment may be generated according to the combining indication information generated by the policy generating node 220, the step of performing a weighting operation on the multiple uplink data in frequency domain associated with the same target user equipment is performed by the remote units in the distributed base station system based on the weighted value transmitted by the corresponding extension unit in the distributed base station system, and the multiple uplink data associated with the same target user equipment are transmitted to the extension unit via the uplink data in frequency domain after the respective remote units perform the weighting operation.

Specifically, a weighted value corresponding to multiple paths of frequency domain uplink data associated with the same target user equipment is distributed by an extension unit in the distributed base station system to each remote unit associated with the same target user equipment, then, the frequency domain data on each remote unit is weighted based on the determined weighted value via a weight calculation unit 234 in the remote unit in the distributed base station system, and then, each remote unit associated with the same target user equipment forwards the weighted frequency domain uplink data to the extension unit in the distributed base station system. The extension unit in the distributed base station system combines the multiple frequency domain uplink data after weighting processing from each remote unit, for example, the frequency domain uplink data received by the extension unit in the distributed base station system may be correspondingly frequency domain weighted and combined according to the combining indication information generated by the policy generation node 220. Continuing with fig. 5E, for a plurality of remote units associated with the same target user equipment, each remote unit receives the weighted value transmitted from the extension unit to perform a weighting operation on the frequency domain uplink data on each remote unit, then each remote unit transmits the frequency domain uplink data subjected to the respective weighting processing to the extension unit, then the extension unit of the distributed base station system performs frequency domain weighted combination on the multiple paths of frequency domain uplink data uploaded by the associated plurality of remote units, and finally the extension unit of the distributed base station system transmits the combined data to the host unit of the distributed base station system.

In this embodiment of the present invention, for each uplink combining processing policy, when performing uplink data combining processing, according to combining indication information included in the uplink data combining processing policy and based on a fourth preset rule, a weighted value of each of multiple channels of frequency domain uplink data transmitted by multiple effective signal source devices indicated by the combining indication information is calculated, and according to the calculated weighted value, a weighting operation is performed on the multiple channels of frequency domain uplink data and then the weighted multiple channels of frequency domain uplink data are combined.

Specifically, in some embodiments, the calculating, based on the fourth predetermined rule, a weighted value of each of the multiple frequency domain uplink data transmitted by the multiple valid signal source devices indicated by the merge indication information includes:

Said set

By at least one expansion unit

And/or remote unit

Forming; if order

And/or

Signal to noise ratio of

Peak power of

Wherein

And/or

Then according to one of the following formulas

An

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

Further, for each uplink data merging processing strategy, the calculating, based on the fourth preset rule, a weighted value of each of the multiple frequency domain uplink data transmitted by the multiple valid signal source devices indicated by the merging indication information further includes: allocating the first user equipment to the target user equipment corresponding to the uplink data merging processing strategy

Is sub-carrier in

And/or

Multiplying the uplink frequency domain signals by weighted values respectively

Then the weighted uplink frequency domain signals are processed according to

And multiple paths of frequency domain uplink data on the subcarriers.

In other embodiments, the calculating, based on the fourth predetermined rule, a weighted value of each of the multiple frequency domain uplink data transmitted by the multiple valid signal source devices indicated by the merge indication information includes:

Said set

By at least one expansion unit

And/or remote unit

Forming; if order

And/or

Peak power of

Wherein

And/or

Then according to one of the following formulas

An

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

The sub-carriers are in the second

An

And/or

On the upstream signal is multiplied by

To perform time offset compensation on the time offset-compensated first

An

And/or

The uplink signals of the upper frequency domain are respectively multiplied by corresponding weighted values

(ii) a To the weighted frequency domain uplink signal according to

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

It should be understood that other aspects and effects of the uplink data processing system can be referred to in the foregoing uplink data processing method, and are not described herein again.

In another embodiment, an uplink data processing method is provided, where the method is used in a distributed base station system, and the method includes: receiving a physical random access signal from at least one user equipment, and generating and sending a corresponding physical random access response signal; estimating the association relation of physical random access signals with the same lead code based on a preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group; channel attribute information carried by each physical random access signal in each target set of physical random access signals is detected.

And aiming at each target physical random access signal group, acquiring channel attribute information carried by each physical random access signal in the corresponding target physical random access signal group based on the received physical random access signal, generating an uplink data processing strategy corresponding to the target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group, and processing the multi-path uplink data associated with the target physical random access signal group according to the uplink data processing strategy.

In the embodiment of the present invention, for each target physical random access signal group, the uplink data processing policy corresponding to the target physical random access signal group is one of an uplink data selection processing policy and an uplink data combining processing policy.

The uplink data selection processing strategy comprises the step of executing selection processing on the multi-channel uplink data associated with the target user equipment according to selection indication information generated by a second preset rule; and the uplink data merging processing strategy comprises executing merging processing on the multi-path uplink data associated with the target user equipment according to the selection indication information generated by the third preset rule.

It should be understood that specific steps, other aspects, and effects of the uplink data processing method may refer to the contents of the foregoing embodiments, and are not described herein again.

Fig. 7 shows a block diagram of an uplink data processing apparatus 400 for a distributed base station system according to an embodiment of the present invention, where the apparatus 400 includes: a receiving module 410, configured to receive a physical random access signal from at least one user equipment; a response module 420, configured to generate and send a physical random access response signal corresponding to the physical random access signal; the estimating module 430 is configured to estimate an association relationship between physical random access signals having the same preamble based on pre-stored prior information, and use each group of physical random access signals having the same preamble and associated with each group of physical random access signals as a target physical random access signal group; an obtaining module 440, configured to obtain, based on the received physical random access signal, channel attribute information carried by each physical random access signal in the corresponding target set of physical random access signals.

Further, the apparatus 400 further includes a policy generating module 450, configured to generate, for each target physical random access signal group, an uplink data processing policy corresponding to the target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group.

It should be understood that, for the execution principle, other aspects and effects of each module in the uplink data processing apparatus for a distributed base station system provided in the embodiment of the present invention, reference may be specifically made to the contents in the foregoing embodiments, and details are not described here.

In another embodiment, an uplink data processing method is provided, where the method is used in a distributed base station system, and the method includes: receiving and forwarding a physical random access signal from at least one user equipment to trigger generation of at least one uplink data processing strategy; processing subsequent uplink data associated with each uplink data processing strategy based on the uplink data processing strategy; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

Further, the method further comprises: receiving channel attribute information carried by each physical random access signal and the preset rule; estimating the association relation of physical random access signals with the same lead code based on the preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group; and aiming at each target physical random access signal group, generating an uplink data processing strategy corresponding to the target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group.

Fig. 8 is a block diagram illustrating a structure of an uplink data processing apparatus 500 for a distributed base station system according to an embodiment of the present invention, where the apparatus 500 includes: a receiving module 510, configured to receive and forward a physical random access signal from at least one ue to trigger generation of at least one uplink data processing policy; and a processing module 520, configured to process, based on each uplink data processing policy, subsequent uplink data associated with the uplink data processing policy; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

Further, the apparatus 500 further includes a policy generating module 530 configured to estimate association relations of the physical random access signals with the same preamble based on the received channel attribute information carried by each of the physical random access signals and the preset rule, and use each group of physical random access signals with the same preamble and associated with each other as a target physical random access signal group, and for each target physical random access signal group, generate an uplink data processing policy corresponding to the target physical random access signal group based on the channel attribute information of each of the physical random access signals in the target physical random access signal group.

In another embodiment, an uplink data processing method is provided, where the method is used in a distributed base station system, and the method includes: receiving a time domain physical random access signal from at least one user equipment and converting the time domain physical random access signal into a frequency domain physical random access signal; forwarding the frequency domain physical random access signal to trigger generation of at least one uplink data processing strategy; converting all subsequently received time domain uplink data into frequency domain uplink data; for each uplink data processing strategy, weighting the subsequent frequency domain uplink data associated with the uplink data processing strategy based on the weighting value determined by the uplink data processing strategy and then forwarding the weighted frequency domain uplink data; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

Fig. 9 shows a block diagram of an uplink data processing apparatus 600 for a distributed base station system according to an embodiment of the present invention, where the apparatus 600 includes: a receiving and converting module 610, configured to receive a time domain physical random access signal from at least one user equipment, convert the time domain physical random access signal into a frequency domain physical random access signal, forward the frequency domain physical random access signal, so as to trigger generation of at least one uplink data processing policy, and convert all subsequently received time domain uplink data into frequency domain uplink data; a weighting module 620, configured to, for each uplink data processing policy, weight, based on a weighting value determined by the uplink data processing policy, subsequent frequency domain uplink data associated with the uplink data processing policy, and forward the weighted frequency domain uplink data; wherein each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same preamble and are associated with the same preamble.

In another embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program, when executed by a processor, implements the uplink data processing method for a distributed base station system according to any of the foregoing embodiments.

For specific limitations and implementation of the above steps, reference may be made to an embodiment of an uplink data processing method for a distributed base station system, which is 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 method, system, apparatus and storage medium for processing uplink data of a distributed base station system according to the embodiments of the present invention are described in detail above, and a specific example is applied in the description to explain the principle and implementation manner of the present invention, and the description of the above embodiments is only used to help understanding the technical solution 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

1. An uplink data processing method, which is used for a distributed base station system, is characterized in that the method comprises the following steps:

receiving a physical random access signal from at least one user equipment;

estimating the association relation of physical random access signals with the same lead code based on a preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group;

generating and sending a corresponding physical random access response signal for each target physical random access signal group, acquiring a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, then generating an uplink data processing strategy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, and processing subsequent uplink data associated with the physical random access response signal according to the uplink data processing strategy;

wherein the preset rule comprises pre-stored prior information or physical random access signals with the same preamble are from the same user equipment by default.

2. The uplink data processing method of claim 1, wherein for each target physical random access signal group, the uplink data processing policy corresponding to the target physical random access signal group is one of an uplink data selection processing policy and an uplink data combining processing policy.

3. The upstream data processing method of claim 1, wherein said method further comprises:

for each target physical random access signal group, after receiving a feedback message associated with a physical random access response signal corresponding to the target physical random access signal group, determining whether access of user equipment corresponding to the target physical random access signal group is successful based on the feedback message, if the access of the user equipment corresponding to the target physical random access signal group is successful, taking the user equipment as the target user equipment, processing uplink data subsequently transmitted by at least one physical channel associated with the target user equipment according to the uplink data processing strategy corresponding to the target physical random access signal group, and if the access of the user equipment corresponding to the target physical random access signal group is failed, discarding the uplink data processing strategy corresponding to the target physical random access signal group and triggering the user equipment associated with the target physical random access signal group to resend a new physical random access signal.

4. The uplink data processing method of claim 1, wherein the predicting the association of the physical random access signals having the same preamble based on the predetermined rule comprises:

estimating whether physical random access signals with the same lead code come from the same user equipment or not based on pre-stored prior information;

for each lead code, if a group of physical random access signals with the lead code is estimated to come from the same user equipment, taking the group of physical random access signals as the target physical random access signal group;

wherein the a priori information comprises at least physical distribution information of at least one first type device in the distributed base station system.

5. The uplink data processing method of claim 4, wherein the predicting whether the physical random access signals with the same preamble come from the same UE based on the predetermined rule comprises:

estimating physical random access signals from a plurality of first type devices with physical space distances smaller than a preset threshold value as physical random access signals from the same user equipment.

6. The uplink data processing method of claim 1, wherein the predicting whether the physical random access signals with the same preamble come from the same ue based on the predetermined rule comprises:

for each preamble, the physical random access signals with the same preamble are by default from the same user equipment, and then the physical random access signal group with the same preamble is taken as a target physical random access signal group.

7. The upstream data processing method of claim 1, wherein said method further comprises:

determining an association relationship between each physical random access signal and at least one first type device transmitting the physical random access signal based on a first preset rule before predicting whether the physical random access signals with the same lead code come from the same user equipment based on the preset rule;

wherein the first preset rule comprises one of:

determining an association relation between each received physical random access signal and a first type of equipment for transmitting the physical random access signal based on a preset time sequence mapping relation; alternatively, the first and second electrodes may be,

and each physical random access signal which is forwarded carries a corresponding source information indication, wherein the source information indication is used for marking the association relationship between the physical random access signal and the first type equipment which transmits the physical random access signal.

8. The uplink data processing method of claim 2, wherein the generating, for each target physical random access signal group, the uplink data processing policy corresponding to the target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group comprises:

and for each target physical random access signal group, the second type equipment in the distributed base station system acquires channel attribute information of a physical random access channel corresponding to each signal source equipment in the target physical random access signal group based on the received physical random access signal, and generates the uplink data processing strategy corresponding to the target physical random access signal group according to the channel attribute information.

9. The uplink data processing method of claim 8, wherein the channel attribute information includes at least one of: peak power value, signal-to-noise ratio value, and time offset.

10. The uplink data processing method of claim 9, wherein, for each target physical random access signal group, the acquiring, by the second-type device in the distributed base station system, channel attribute information of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, and generating the uplink data processing policy corresponding to the target physical random access signal group according to the channel attribute information, includes:

generating an uplink data selection processing strategy containing selection indication information based on a second preset rule aiming at each target physical random access signal group;

wherein the second preset rule comprises one of:

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected peak power value of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting the physical random access signal with the maximum peak power value as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected signal-to-noise ratio of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting the physical random access signal with the largest signal-to-noise ratio as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected time offset of each physical random access signal in the target physical random access signal group, and selecting a first type device of a physical random access signal with the minimum transmission time offset as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the peak power value and the time offset of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting the physical random access signal with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected signal-to-noise ratio of each physical random access signal in the target physical random access signal group and the joint confidence degree of a binary group formed by time offset, and selecting a first type device for transmitting the physical random access signal with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group;

11. The upstream data processing method according to claim 10, wherein each of said upstream data selection processing strategies includes: and only processing the subsequent uplink data transmitted by the effective signal source equipment indicated by the selection indication information in the uplink data selection processing strategy.

12. The uplink data processing method of claim 9, wherein, for each target physical random access signal group, the acquiring, by the second-type device in the distributed base station system, channel attribute information of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on the received physical random access signal, and generating the uplink data processing policy corresponding to the target physical random access signal group according to the channel attribute information, includes:

generating an uplink data merging processing strategy containing merging indication information based on a third preset rule aiming at each target physical random access signal group;

wherein the third preset rule comprises one of:

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected peak power value of each physical random access signal in the target physical random access signal group, and selecting first type equipment for transmitting at least two physical random access signals with the maximum peak power value as effective signal source equipment corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected signal-to-noise ratio of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting at least two physical random access signals with the largest signal-to-noise ratio as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected time offset of each physical random access signal in the target physical random access signal group, and selecting first-type equipment of at least two physical random access signals with minimum transmission time offsets as effective signal source equipment corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on the detected joint confidence degree of a binary group consisting of the peak power value and the time offset of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting at least two physical random access signals with the maximum joint confidence degree as an effective signal source device corresponding to the target physical random access signal group;

for each target physical random access signal group, sequencing all physical random access signals in the target physical random access signal group based on a detected joint confidence coefficient of a binary group consisting of a signal-to-noise ratio and a time offset of each physical random access signal in the target physical random access signal group, and selecting a first type device for transmitting at least two physical random access signals with the maximum joint confidence coefficient as an effective signal source device corresponding to the target physical random access signal group;

13. The uplink data processing method according to claim 12, wherein each of the uplink data combining processing strategies includes: and only combining and processing the subsequent uplink data transmitted by all the effective signal source devices indicated by the combining indication information in the uplink data combining processing strategy.

14. The upstream data processing method of claim 13,

for each uplink data merging processing strategy, when the uplink data merging processing is executed, according to merging indication information contained in the uplink data merging processing strategy and based on a fourth preset rule, calculating respective weighted values of multiple channels of frequency domain uplink data transmitted by multiple effective signal source devices and indicated by the merging indication information, executing weighting operation on the multiple channels of frequency domain uplink data according to the calculated weighted values, and then merging the weighted multiple channels of frequency domain uplink data.

15. The uplink data processing method of claim 4, wherein the first type device comprises an extension unit and/or a remote unit in the distributed base station system.

16. The uplink data processing method of claim 8, wherein the second type device comprises a host unit in the distributed base station system.

17. The method as claimed in claim 14, wherein, for each uplink data merge processing policy, when performing the uplink data merge processing, calculating the weighting values of the multiple frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merge indication information according to the merge indication information included in the uplink data merge processing policy and based on a fourth preset rule includes:

Said set

By at least one expansion unit

And/or remote unit

Forming;

if order

And/or

Signal to noise ratio of

Peak power of

Wherein

And/or

Then according to one of the following formulas

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

18. The method as claimed in claim 17, wherein for each uplink data merge processing policy, when performing the uplink data merge processing, calculating the weighting values of the multiple frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merge indication information according to the merge indication information included in the uplink data merge processing policy and based on a fourth preset rule, further comprises:

allocating the first user equipment to the target user equipment corresponding to the uplink data merging processing strategy

Is sub-carrier in

And/or

Multiplying the uplink frequency domain signals by weighted values respectively

Then the weighted uplink frequency domain signals are processed according to

And multiple paths of frequency domain uplink data on the subcarriers.

19. The method as claimed in claim 14, wherein, for each uplink data merge processing policy, when performing the uplink data merge processing, calculating the weighting values of the multiple frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merge indication information according to the merge indication information included in the uplink data merge processing policy and based on a fourth preset rule includes:

Said set

By at least one expansion unit

And/or remote unit

Forming;

if order

And/or

Peak power of

Wherein

And/or

Then according to one of the following formulas

And/or

Weight value of transmitted uplink data:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

20. The method as claimed in claim 19, wherein for each uplink data merge processing policy, when performing the uplink data merge processing, calculating the weighting values of the multiple frequency domain uplink data transmitted by the multiple effective signal source devices indicated by the merge indication information according to the merge indication information included in the uplink data merge processing policy and based on a fourth preset rule further includes:

Is sub-carrier in

And/or

On the uplink signal is multiplied by the coefficients

So as to perform the time offset compensation,

compensated for time drift

And/or

；

To the weighted frequency domain uplink signal according to

Multi-channel frequency domain uplink data on subcarriers;

wherein the content of the first and second substances,

is shown as

An

，

Is shown as

An

，

is composed of

In the form of a plurality of such compounds,

as the imaginary part of the signal, the imaginary part,

represents

The value of (c).

21. The upstream data processing method of claim 10,

the selection indication information and the corresponding uplink data selection processing strategy are generated by a host unit in the distributed base station system, or the selection indication information and the corresponding uplink data selection processing strategy are generated by an extension unit in the distributed base station system based on the channel attribute information of each physical random access signal in all target physical random access signal groups transmitted by the host unit in the distributed base station system.

22. The upstream data processing method of claim 12,

the merging indication information and the corresponding uplink data merging processing strategy are generated by a host unit in the distributed base station system, or the merging indication information and the corresponding uplink data merging processing strategy are generated by an extension unit in the distributed base station system based on channel attribute information of each physical random access signal in all target physical random access signal sets transmitted by the host unit in the distributed base station system.

23. The uplink data processing method of claim 14, wherein the weight value is generated by the host unit in the distributed base station system, or the weight value is generated by the extension unit in the distributed base station system based on channel attribute information of each of all target physical random access signal groups transmitted by the host unit in the distributed base station system.

24. The uplink data processing method of claim 23, wherein the step of performing the weighting operation on the multiple frequency domain uplink data associated with the same target ue is performed by an extension unit in the distributed base station system, or the step of performing the weighting operation on the multiple frequency domain uplink data associated with the same target ue is performed by a remote unit in the distributed base station system based on the weighting value transmitted by the corresponding extension unit in the distributed base station system.

25. An uplink data processing system for a distributed base station system, the uplink data processing system comprising:

the system comprises a relation decision node and a target physical random access signal group, wherein the relation decision node is used for receiving a physical random access signal from at least one user equipment, estimating the association relation of the physical random access signals with the same lead code based on a preset rule, and taking each group of the physical random access signals with the same lead code and associated as the target physical random access signal group;

a policy generation node, configured to, for each target physical random access signal group, obtain, based on a received physical random access signal, a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group, and then generate, based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, an uplink data processing policy corresponding to the target physical random access signal group; and

the data processing node is used for processing subsequent uplink data associated with the uplink data processing strategy according to each uplink data processing strategy;

26. The upstream data processing system of claim 25, wherein for each target set of physical random access signals, the upstream data processing policy corresponding to the target set of physical random access signals is one of an upstream data selection processing policy and an upstream data combining processing policy.

27. The upstream data processing system of any of claims 25-26, wherein the policy generation node comprises:

a selection indication generating unit, configured to generate, based on a second preset rule, selection indication information included in each uplink data selection processing policy;

a merging instruction generating unit, configured to generate merging instruction information included in each uplink data merging processing policy based on a third preset rule;

wherein the second preset rule comprises one of:

wherein the third preset rule comprises one of:

28. The upstream data processing system of any of claims 25-26, wherein said data processing node comprises:

the uplink data selection processing unit is used for executing selection processing on the multi-path uplink data associated with each uplink data selection processing strategy according to the uplink data selection processing strategy;

and the uplink data merging processing unit is used for executing merging processing on the multi-path uplink data associated with the uplink data merging processing strategy according to each uplink data merging processing strategy.

29. The upstream data processing system of claim 28, wherein said data processing node further comprises a weight calculation unit, wherein said weight calculation unit is configured to:

30. An uplink data processing method, which is used for a distributed base station system, is characterized in that the method comprises the following steps:

receiving a physical random access signal from at least one user equipment, and generating and sending a corresponding physical random access response signal;

for each target physical random access signal group, acquiring a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on a received physical random access signal, and acquiring channel attribute information carried by each physical random access signal in the corresponding target physical random access signal group based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group; generating an uplink data processing strategy corresponding to the target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group; and processing subsequent uplink data associated with the physical random access response signal according to the uplink data processing strategy;

31. An uplink data processing apparatus for a distributed base station system, the apparatus comprising:

a receiving module, configured to receive a physical random access signal from at least one user equipment;

a response module for generating and transmitting a physical random access response signal corresponding to the physical random access signal;

the pre-estimation module is used for pre-estimating the association relation of physical random access signals with the same lead code based on pre-stored prior information, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group;

an obtaining module, configured to obtain, for each target physical random access signal group, a detection result of a physical random access channel corresponding to each signal source device in the target physical random access signal group based on a received physical random access signal, and obtain, based on the detection result of the physical random access channel of each signal source device in the target physical random access signal group, channel attribute information carried by each physical random access signal in the corresponding target physical random access signal group;

and the strategy generation module is used for generating an uplink data processing strategy corresponding to each target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group.

32. An uplink data processing method, which is used for a distributed base station system, is characterized in that the method comprises the following steps:

receiving and forwarding a physical random access signal from at least one user equipment to trigger generation of at least one uplink data processing strategy; processing subsequent uplink data associated with each uplink data processing strategy based on the uplink data processing strategy;

each uplink data processing strategy corresponds to a group of physical random access signals which are estimated based on a preset rule, have the same lead code and are associated with the lead code;

the method further comprises the following steps:

receiving channel attribute information carried by each physical random access signal and the preset rule;

estimating the association relation of physical random access signals with the same lead code based on the preset rule, and taking each group of physical random access signals with the same lead code and associated physical random access signals as a target physical random access signal group;

generating an uplink data processing strategy corresponding to each target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group;

33. An uplink data processing apparatus for a distributed base station system, the apparatus comprising:

a receiving module, configured to receive and forward a physical random access signal from at least one user equipment to trigger generation of at least one uplink data processing policy; and

the processing module is used for processing subsequent uplink data associated with the uplink data processing strategy based on each uplink data processing strategy;

a policy generation module, configured to estimate, based on the channel attribute information carried by each received physical random access signal and the preset rule, an association relationship between physical random access signals with a same preamble, use each group of physical random access signals with a same preamble and associated with each group of physical random access signals as a target physical random access signal group, and generate, for each target physical random access signal group, an uplink data processing policy corresponding to the target physical random access signal group based on the channel attribute information of each physical random access signal in the target physical random access signal group;

34. An uplink data processing method, which is used for a distributed base station system, is characterized in that the method comprises the following steps:

receiving a time domain physical random access signal from at least one user equipment and converting the time domain physical random access signal into a frequency domain physical random access signal;

forwarding the frequency domain physical random access signal to trigger generation of at least one uplink data processing strategy;

converting all subsequently received time domain uplink data into frequency domain uplink data;

for each uplink data processing strategy, weighting the subsequent frequency domain uplink data associated with the uplink data processing strategy based on the weighting value determined by the uplink data processing strategy and then forwarding the weighted frequency domain uplink data;

35. An uplink data processing apparatus for a distributed base station system, the apparatus comprising:

a receiving and converting module, configured to receive a time domain physical random access signal from at least one ue, convert the time domain physical random access signal into a frequency domain physical random access signal, forward the frequency domain physical random access signal to trigger generation of at least one uplink data processing policy, and convert all subsequently received time domain uplink data into frequency domain uplink data;

the weighting module is used for weighting the subsequent frequency domain uplink data associated with the uplink data processing strategy based on the weighting value determined by the uplink data processing strategy and forwarding the weighted frequency domain uplink data;

36. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the upstream data processing method according to any one of claims 1 to 24.

37. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the upstream data processing method according to claim 30.

38. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, implements the upstream data processing method according to claim 32.

39. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the upstream data processing method according to claim 34.