CN113709762B

CN113709762B - Signal processing method, device, network and storage medium for cell merging scene

Info

Publication number: CN113709762B
Application number: CN202010431560.8A
Authority: CN
Inventors: 郭保娟; 贾保灵; 戴明晔; 吴央; 赵琴琴
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2023-12-26
Anticipated expiration: 2040-05-20
Also published as: CN113709762A

Abstract

The embodiment of the invention provides a signal processing method, a device, a network side and a storage medium of a cell merging scene, wherein the method comprises the following steps: determining a plurality of RRUs corresponding to a terminal from all RRUs based on signals sent by the terminal and received by all RRUs of a combined cell, wherein the coverage areas of the plurality of RRUs corresponding to the terminal comprise the positions of the terminal; and based on a plurality of RRUs corresponding to the terminal, carrying out uplink receiving and/or downlink sending of signals on the terminal. The method, the device, the network side and the storage medium provided by the embodiment of the invention avoid the problems that the cell capacity is reduced and the signal receiving and transmitting cannot be normally carried out due to the combined receiving and transmitting of all RRUs in the combined cell, and only the signal receiving and transmitting is carried out in the coverage area of a plurality of RRUs corresponding to the terminal, so that the signal quality of each signal of uplink and downlink can be effectively improved, and multi-user multiplexing can be supported, thereby further improving the system capacity.

Description

Signal processing method, device, network and storage medium for cell merging scene

Technical Field

The present invention relates to the field of wireless communications technologies, and in particular, to a signal processing method, apparatus, network side and storage medium for a cell combining scenario.

Background

Cell merging refers to connecting multiple single-channel or multi-channel RRUs (Remote Radio Unit, remote radio units) to the same BBU (Base band Unit), and setting the multiple RRUs as the same logical cell.

In a cell merging scene, for a network side, all RRUs in a merging cell belong to the same logic cell, and in the prior art, all RRUs in the merging cell are regarded as multiple antennas to perform uplink receiving and downlink sending. However, the different RRUs in the combined cell have different antenna configurations, and the network side performs joint reception or transmission based on the RRUs with different antenna configurations, which may result in a capacity reduction of the combined cell, and the total number of antennas of all RRUs in the combined cell may possibly exceed the number of channels that can be processed at most by the network side, so that normal reception and transmission cannot be performed.

Disclosure of Invention

The embodiment of the invention provides a signal processing method, a device, a network side and a storage medium of a cell merging scene, which are used for solving the problem that the cell capacity is possibly influenced by RRU joint transceiving in the existing cell merging scene, so that normal transceiving cannot be performed.

In a first aspect, an embodiment of the present invention provides a signal processing method for a cell merging scenario, including:

Determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminal and received by all RRUs of a combined cell, wherein the coverage areas of the plurality of RRUs corresponding to the terminal comprise the position of the terminal;

and based on a plurality of RRUs corresponding to the terminal, carrying out uplink receiving and/or downlink sending of signals on the terminal.

Preferably, the determining, based on signals sent by the terminal and received by all RRUs of the combined cell, a plurality of RRUs corresponding to the terminal from all RRUs specifically includes:

based on uplink signals sent by the terminal and received by all RRUs of a combined cell, determining a plurality of uplink RRUs corresponding to the terminal from all RRUs, wherein the uplink RRUs are used for uplink receiving of signals of the terminal;

and/or determining a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminal and received by all RRUs of a combined cell or measurement feedback signals of downlink signals fed back by the terminal and received by all RRUs, wherein the downlink RRUs are used for downlink signal transmission of the terminal.

Preferably, the determining, based on the uplink signals sent by the terminal and received by all RRUs of the combined cell, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

Determining that each RRU corresponds to uplink receiving performance of a terminal respectively based on uplink signals sent by the terminal and received by all RRUs of a combined cell;

and determining a plurality of uplink RRUs corresponding to the terminal from all RRUs based on the uplink receiving performance of each RRU corresponding to the terminal.

Preferably, when the terminal is in the random access stage, the uplink signal is a random access signal, and the uplink receiving performance of any RRU corresponding to the terminal includes the correlation peak power of the Preamble sequence included in the random access signal received by any RRU.

Preferably, when the terminal is in a connection state stage, the uplink signal is a sounding reference signal SRS, and uplink receiving performance of any RRU corresponding to the terminal includes a signal to noise ratio of the SRS received by any RRU, and/or a channel quality indication CQI obtained based on SRS measurement received by any RRU.

Preferably, when the terminal is in a connection state stage, the determining, based on uplink receiving performance of each RRU corresponding to the terminal, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

determining a plurality of uplink candidate RRUs corresponding to the terminal from all RRUs based on uplink receiving performance of each RRU corresponding to the terminal respectively;

If the number of times that any RRU is the uplink candidate RRU continuously is greater than a preset number of times threshold, determining any RRU as the uplink RRU corresponding to the terminal.

Preferably, the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of an antenna configuration of the RRUs, a total number of antennas supporting uplink reception at the network side, and a power ratio of uplink signals received between the RRUs.

Preferably, the determining, based on the uplink signals sent by the terminal and received by all RRUs of the combined cell, or the measurement feedback signals of the downlink signals fed back by the terminal and received by all RRUs, a plurality of downlink RRUs corresponding to the terminal from all RRUs specifically includes:

if the number of channel state information reference signal (CSI-RS) resources supported by the terminal is equal to 1, determining a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminal and received by all RRUs of a combined cell;

otherwise, configuring a plurality of CSI-RS resources to the terminal so that the terminal can determine an optimal CSI-RS resource based on the plurality of CSI-RS resources and feed back a CSI-RS measurement feedback signal of the optimal CSI-RS resource;

and receiving the CSI-RS measurement feedback signals fed back by the terminal based on all RRUs of the combined cell, determining an optimal CSI-RS resource indicated by the CSI-RS measurement feedback signals, and taking a plurality of RRUs corresponding to the optimal CSI-RS resource as a plurality of downlink RRUs corresponding to the terminal.

Preferably, the configuring a plurality of CSI-RS resources for the terminal specifically includes:

dividing all RRUs of the combined cell into a plurality of RRU groups based on the number of CSI-RS resources supported by the terminal and/or the number of CSI-RS ports supported by the terminal;

and configuring CSI-RS resources corresponding to each RRU group to the terminal.

In a second aspect, an embodiment of the present invention provides a signal processing apparatus for a cell merging scenario, including:

the RRU determining unit is used for determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminals and received by all RRUs of the combined cell, wherein the coverage areas of the plurality of RRUs corresponding to the terminal comprise the positions of the terminal;

and the signal processing unit is used for carrying out uplink receiving and/or downlink sending on the signals of the terminal based on the plurality of RRUs corresponding to the terminal.

In a third aspect, an embodiment of the present invention provides a network side, including a memory, a processor, and a program stored in the memory and capable of running on the processor, where the processor implements the following steps when executing the program:

In a fourth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method as provided by the first aspect.

According to the signal processing method, the device, the network side and the storage medium for the cell merging scene, provided by the embodiment of the invention, through signals sent by all the terminals received by the RRUs, a plurality of RRUs corresponding to the terminals are selected to realize signal processing of uplink receiving and/or downlink sending, and the number of RRUs applied by the network side and the terminal communication is reduced, so that the problems that the cell capacity is reduced and the signal receiving and sending cannot be normally carried out due to combined receiving and sending of all the RRUs in the merging cell are avoided, the signals are only received and sent in the coverage area of the plurality of RRUs corresponding to the terminals, interference caused by the signals received by the RRUs which do not cover the positions of the terminals is avoided, the signal quality of each uplink and downlink signal can be effectively improved, multi-user multiplexing can be supported, and the system capacity is further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a flow chart of a signal processing method of a cell merging scenario provided in an embodiment of the present invention;

fig. 2 is a flow chart of a method for determining downlink RRU according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a signal processing apparatus in a cell merging scenario provided in an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a network side according to an embodiment of the present invention.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of 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, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order to clearly describe the technical solutions of the embodiments of the present invention, in each embodiment of the present invention, if "first", "second", and the like words are used to distinguish the same item or similar items having substantially the same function and effect, those skilled in the art will understand that the "first", "second", and the like words do not limit the number and execution order.

The cell merging is mainly applied to small antenna cells, so that different physical cells can be allowed in one logic cell, thereby selectively adjusting the network structure, more flexibly carrying out network expansion and coverage, and simultaneously bringing the benefits of reducing switching, reducing call drop rate, reducing neighbor relation and the like.

At present, for a cell merging scene, a network side regards all RRUs in a merging cell as multiple antennas to perform uplink receiving and downlink sending, and for part of the scene, the operation can cause degradation of cell performance, for example, because different RRUs in the merging cell have different antenna forms, especially in 5G (5 Generation, fifth Generation mobile communication technology), the antenna forms of RRUs of small antennas comprise distributed PICO RRUs, traditional DAS RRUs, 8TR RRUs, pole station RRUs and the like, and the network side performs joint receiving or sending based on RRUs with different antenna forms can cause capacity degradation of the merging cell; for another example, when the total number of antennas of all RRUs in the combined cell exceeds the processing capability of the network side, normal reception and transmission may not be performed.

In addition, considering the actual communication characteristics, most of the terminals can only be in the coverage area of a plurality of RRUs in all RRUs in the combined cell at the same time, if the number of RRUs in the combined cell is relatively large, after the terminals send uplink signals, the network side can only receive signals on a part of RRUs, and noise or other space division users are received on other RRUs. If the antenna data of all RRUs in the combined cell are analyzed as the data of the user, interference is caused to the reception of the uplink signal.

In view of the above problems, the embodiment of the invention provides a signal processing method for a cell merging scenario. Fig. 1 is a flow chart of a signal processing method of a cell merging scenario provided in an embodiment of the present invention, as shown in fig. 1, an execution body of the method may be a network side, for example, a base station, and the method includes:

step 110, determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminals received by all remote radio units RRUs of the combined cell, wherein a coverage area of each RRU corresponding to the terminal includes a position of the terminal.

Specifically, the merging cell is a logic cell after cell merging, and the merging cell comprises a plurality of RRUs. For any terminal, before determining a plurality of RRUs corresponding to the terminal from all RRUs, all RRUs need to be applied to receive signals sent by the terminal. Here, the signal sent by the terminal may be an uplink signal sent by the terminal, or may be feedback of the terminal for a downlink signal, which is not specifically limited in the embodiment of the present invention.

After signals sent by the terminals respectively received by all the RRUs are obtained, a plurality of RRUs of which the terminals are in the coverage range can be selected from all the RRUs based on the information such as the signal-to-noise ratio, the power size and the like of the uplink signals received by each RRU or the measurement results and the like contained in the feedback of the downlink signals, and the RRUs are used as the RRUs corresponding to the terminals. The coverage area of each RRU corresponding to the obtained terminal can contain the position of the terminal, so that RRUs which do not cover the position of the terminal in the combined cell can be filtered. Here, the RRU corresponding to the terminal may be one or more.

Because the terminal can only be in the coverage area of a plurality of RRUs in all RRUs in the combined cell at the same time, and the channel state between the RRU in which the terminal is in the coverage area and the terminal is superior to the channel state between the RRU in which the terminal is not in the coverage area and the terminal, the channel state between each RRU and the terminal can be judged according to the signals sent by the terminal and received by each RRU, whether the terminal is in the coverage area of each RRU is further determined, and a plurality of RRUs corresponding to the terminal are selected.

Step 120, based on the plurality of RRUs corresponding to the terminal, uplink receiving and/or downlink sending of the signal are performed to the terminal.

Specifically, the plurality of RRUs corresponding to the terminal determined in step 110 may be used to implement uplink reception and/or downlink transmission of a terminal signal, for example, the plurality of RRUs corresponding to the terminal determined based on the uplink signal may be used only for reception of an uplink signal for the terminal, or may be used both for reception of an uplink signal for the terminal and for transmission of a downlink signal for the terminal, and similarly, the plurality of RRUs corresponding to the terminal that may be determined based on feedback of the downlink signal may be used only for transmission of a downlink signal for the terminal, or may be used both for transmission of a downlink signal for the terminal and for reception of an uplink signal for the terminal, which is not limited in particular in the embodiment of the present invention.

According to the method provided by the embodiment of the invention, through the signals sent by all the terminals received by the RRUs, a plurality of RRUs corresponding to the terminals are selected to realize the signal processing of uplink receiving and/or downlink sending, and the number of RRUs applied to the communication between a network side and the terminals is reduced, so that the problems that the capacity of the cell is reduced and the signal receiving and sending cannot be normally carried out due to the combined receiving and sending of all the RRUs in the cell are avoided, the signals are only received and received in the coverage area of the plurality of RRUs corresponding to the terminals, the interference caused by the signals received by the RRUs which do not cover the positions of the terminals is avoided, the signal quality of each signal of uplink and downlink can be effectively improved, and multi-user (MU) multiplexing can be supported, thereby further improving the system capacity.

Based on any one of the above embodiments, the method in step 110 specifically includes:

step 111, determining a plurality of uplink RRUs corresponding to the terminal from all the RRUs based on the uplink signals sent by the terminals received by all the RRUs of the combined cell, where the uplink RRUs are used for uplink signal reception of the terminal.

And/or, step 112, determining a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminals received by all RRUs of the combined cell or measurement feedback signals of downlink signals fed back by the terminals received by all RRUs, where the downlink RRUs are used for downlink signal transmission to the terminal.

Specifically, when the signal sent by the received terminal is an uplink signal, a plurality of RRUs corresponding to the terminal, which are determined based on the uplink signals received by all RRUs, may be recorded as uplink RRUs, and the uplink RRUs are applied to uplink reception of the signal for the terminal. In addition, a plurality of RRUs corresponding to the terminal, which are determined based on uplink signals received by all RRUs, can be recorded as downlink RRUs, and the downlink RRUs are applied to downlink transmission of signals aiming at the terminal;

when the received signal sent by the terminal is a measurement feedback signal fed back for a downlink signal, a plurality of RRUs corresponding to the terminal, which are determined based on the measurement feedback signals received by all RRUs, can be recorded as downlink RRUs, and the downlink RRUs are applied to downlink transmission of the signal for the terminal.

In the embodiment of the invention, the types of the RRUs corresponding to the terminal determined by the types of the received signals, namely the uplink RRU and the downlink RRU, are further distinguished, so that the subsequent uplink receiving and downlink sending based on the uplink RRU and the downlink RRU are more targeted, and the signal quality of each uplink signal and each downlink signal is further improved.

Based on any of the above embodiments, step 111 specifically includes: determining that each RRU corresponds to the uplink receiving performance of the terminal respectively based on uplink signals sent by the terminals received by all RRUs of the combined cell; and determining a plurality of uplink RRUs corresponding to the terminal from all the RRUs based on the uplink receiving performance of each RRU corresponding to the terminal.

Specifically, when the received signal sent by the terminal is an uplink signal, it may be determined that the RRU corresponds to the uplink reception performance of the terminal based on the uplink signal sent by the terminal and received by any RRU. The uplink receiving performance herein may be specifically expressed as a signal-to-noise ratio and power of the received uplink signal itself, or a channel quality obtained based on measurement of the uplink signal, which is not specifically limited in the embodiment of the present invention.

After the uplink receiving performance of each RRU corresponding to the terminal is obtained, a plurality of uplink RRUs corresponding to the terminal can be determined based on the uplink receiving performance of each RRU corresponding to the terminal. For example, a preset number of RRUs with the highest signal-to-noise ratio of the received uplink signal may be used as the uplink RRUs corresponding to the terminal, or a preset number of RRUs with the optimal channel quality measured based on the received uplink signal may be used as the uplink RRUs corresponding to the terminal.

For the processing of the uplink signal, the stage in which the terminal is located can be generally divided into a random access stage and a connection state stage. Currently, in the random access stage, the network side does not distinguish the antenna signals of each RRU in the combined cell, and performs the receiving process in a unified manner, and specifically includes the time-frequency conversion, the matched filtering, the antenna combining and the PRACH detection processes of the PRACH ((Physical Random Access Channels, physical random access channel)), and PUSCH (Physical Uplink Shared Channel )/PUCCH (Physical Uplink Control Channel, physical uplink control channel) receiving in the random access stage. The time-frequency conversion and the matched filtering are processed independently for each antenna, and the antenna combination is to combine the power of the antenna signals of all RRUs, and the detection threshold during PRACH detection is also required to be determined according to the total number of the antennas of all RRUs. The PUSCH/PUCCH reception in the random access phase is also channel estimation for all RRU antennas, and joint detection processing for all antennas.

For the random access phase, the uplink signal is a random access signal, and the uplink receiving performance of any RRU corresponding to the terminal comprises the correlation peak power of the Preamble sequence contained in the random access signal received by the RRU. Based on any of the above embodiments, step 111 specifically includes: based on the random access signals sent by the terminals and received by all RRUs of the combined cell, determining the correlation peak power of the Preamble sequence contained in the random access signals of each RRU corresponding to the terminal respectively; and determining a plurality of uplink RRUs corresponding to the terminal from all the RRUs based on the correlation peak power corresponding to each RRU.

Specifically, after all RRUs receive the random access signal, the correlation power of the Preamble sequence included in the random access signal may be calculated according to the random access signal received by any RRU, so as to determine the correlation peak power of the Preamble sequence. Here, for the case that a single RRU includes multiple antennas, the powers corresponding to the multiple antennas may be accumulated, so as to eliminate the difference of antenna gains caused by the different antenna forms of different RRUs.

In obtaining the correlation peak power corresponding to each RRU, a plurality of RRUs with the highest correlation peak power may be selected from all RRUs as a plurality of uplink RRUs corresponding to the terminal, or the correlation peak power corresponding to all RRUs, the antenna configuration of all RRUs, and the like may be combined to determine a plurality of RRUs as a plurality of uplink RRUs corresponding to the terminal.

In addition, after determining a plurality of uplink RRUs corresponding to the terminal in the random access stage, the antenna combination can be performed according to the antennas in the uplink RRUs, then the detection threshold is determined according to the selected number of antennas, PRACH detection can be performed, and channel estimation and multi-antenna joint detection processing in the random access process can be performed by using the antennas of the uplink RRUs, so that PUSCH/PUCCH reception in the random access process can be performed.

For the connection state stage, the uplink signal is SRS (Sounding Reference Signal ), and the uplink receiving performance of any RRU corresponding to the terminal includes a signal-to-noise ratio of the SRS received by the RRU, and/or CQI (Channel Quality Indicator, channel quality indication) obtained based on the SRS measurement received by the RRU. Based on any of the above embodiments, step 111 specifically includes: determining signal-to-noise ratios of SRSs received by each RRU respectively based on SRSs sent by terminals received by all RRUs of a combined cell, and/or CQI measured by each RRU based on the received SRSs; and determining a plurality of uplink RRUs corresponding to the terminal from all the RRUs based on the signal-to-noise ratio and/or CQI corresponding to each RRU.

Specifically, after receiving SRS by applying all RRUs, channel estimation processing may be performed on all antennas of any RRU, so as to obtain the sum of signal-to-noise ratios of SRS received by all antennas of the RRU, which is used as the signal-to-noise ratio of SRS received by the RRU. In addition, the CQI of any RRU can be measured based on SRS received on all antennas of the RRU.

Therefore, based on the signal-to-noise ratio of the SRS received by all the RRUs, or based on the CQI measured by all the RRUs, or combined with the signal-to-noise ratio of the SRS received by all the RRUs and the CQI measured, a plurality of RRUs are selected from all the RRUs to serve as a plurality of uplink RRUs corresponding to the terminal.

In addition, after determining a plurality of uplink RRUs corresponding to the terminal in the connection state stage, PUSCH/PUCCH reception may be performed based on the plurality of uplink RRUs, and SRS power, channel quality, shaping weight measurement may be performed based on the SRS.

Based on any of the above embodiments, when the terminal is in the connected state stage, step 111 specifically includes: determining a plurality of uplink candidate RRUs corresponding to the terminal from all RRUs based on uplink receiving performance of each RRU corresponding to the terminal respectively; if the number of times that any RRU is the uplink candidate RRU continuously is greater than a preset number of times threshold, determining the RRU as the uplink RRU corresponding to the terminal.

Specifically, in order to ensure that the selected uplink RRU does not have ping-pong handover, a plurality of uplink candidate RRUs corresponding to the terminal need to be determined from all the RRUs according to uplink receiving performance of each RRU corresponding to the terminal, after the plurality of uplink candidate RRUs are obtained, the uplink candidate RRUs are smoothed, and only when the number of times that one RRU is continuously determined as the uplink candidate RRU is greater than a preset number of times threshold, the RRU is used as the uplink RRU corresponding to the terminal. Here, the preset frequency threshold, that is, the preset frequency minimum value of the uplink candidate RRU, is used as the preset uplink RRU continuity.

According to the method provided by the embodiment of the invention, the selected uplink RRU is smoothed by comparing whether the number of times that the RRU is the uplink candidate RRU continuously is larger than the preset number threshold value, so that the selected uplink RRU is ensured not to have the ping-pong switching problem.

Based on any of the above embodiments, the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of the antenna configuration of the RRUs, the total number of antennas supporting uplink reception at the network side, and the power ratio of the received uplink signals between the RRUs.

Specifically, the determination of the number of uplink RRUs may be implemented by any one or a combination of the following manners:

firstly, the number of the RRUs with the antenna shape of 8TR, for example, the RRUs with the antenna shape of 8TR, which are preset as uplink RRUs, is 1 or 2, and the number of the RRUs with the antenna shapes of PICO, DAS and pole stations, which are preset as uplink RRUs, is a plurality;

the second method can be determined according to the implementation capability of the network side, specifically, the number of uplink RRUs is determined not to exceed the implementation capability of the network side, that is, the total number of antennas supported by the network side for uplink reception.

Third, the determination may be performed according to a power ratio of the uplink signals received between the RRUs, for example, if a ratio of a power of any RRU to a power of the RRU with the maximum power is smaller than a preset power ratio threshold, the RRU is not used as the uplink RRU, so as to control the number of uplink RRUs. Here, the power of the RRU may be the correlation peak power in the random access phase, and may be the signal-to-noise ratio of the SRS in the connection phase, which is not specifically limited in the embodiment of the present invention.

The method provided by the embodiment of the invention determines the number of the uplink RRUs based on at least one of the antenna form of the RRUs, the total number of the antennas supported by the uplink reception by the network side and the power ratio of the uplink signals received between the RRUs, thereby ensuring more flexible and reliable uplink signal reception of a cell merging scene.

Based on any of the above embodiments, step 120 specifically includes: and carrying out uplink receiving on the terminal based on a plurality of uplink RRUs corresponding to the terminal.

Specifically, in the random access stage, the antennas of a plurality of uplink RRUs can be used to perform channel estimation and multi-antenna joint detection processing in the random access process, and PUSCH/PUCCH reception is performed. In the connection state stage, the PUSCH/PUCCH reception can be performed based on a plurality of uplink RRUs as well.

Based on any of the above embodiments, step 112 specifically includes:

step 1121, if the number of CSI-RS (Channel State Information-Reference Signal) resources supported by the terminal is equal to 1, determining a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminal and received by all RRUs of the combined cell;

step 1122, if not, configuring a plurality of CSI-RS resources to the terminal, so that the terminal can determine an optimal CSI-RS resource based on the plurality of CSI-RS resources, and feed back a CSI-RS measurement feedback signal of the optimal CSI-RS resource; and determining an optimal CSI-RS resource indicated by the CSI-RS measurement feedback signal based on the CSI-RS measurement feedback signals fed back by all RRUs of the combined cell, and taking a plurality of RRUs corresponding to the optimal CSI-RS resource as a plurality of downlink RRUs corresponding to the terminal.

Specifically, step 1121 and step 1122 are two downlink RRU determination methods performed under different conditions. Step 1121 is directed to a case that the terminal only supports one CSI-RS resource, and at this time, based on uplink signals sent by the terminal and received by all RRUs of the combined cell, a number of downlink RRUs corresponding to the terminal are determined, where a specific method for determining a downlink RRU is consistent with a method for determining an uplink RRU in the foregoing embodiment, or the uplink RRU may be directly used as a downlink RRU to perform downlink sending of a signal, which is not described herein.

Step 1122 is directed to the case that the terminal supports more than 1 CSI-RS resource, where the network side configures CSI-RS resources to the terminal first, and specifically when the CSI-RS resources are configured, the network side may configure, for the terminal, a number of CSI-RS resources smaller than or equal to the number of CSI-RS resources actually supported by the terminal according to the number of CSI-RS resources actually supported by the terminal. Here, the multiple CSI-RS resources configured to the terminal by the network side respectively correspond to a plurality of RRUs in all RRUs in the combined cell of the network side, and the types and numbers of antennas of the RRUs corresponding to each CSI-RS resource may be the same or different.

Then, the terminal can analyze the multiple CSI-RS resources configured by the network side respectively, select the optimal CSI-RS resource from the multiple CSI-RS resources, and feed back measurement information of the optimal CSI-RS resource as a CSI-RS measurement feedback signal to the network side.

The network side can receive CSI-RS measurement feedback signals fed back by the terminals through combining all RRUs in the cell, acquire optimal CSI-RS resources selected by the terminals based on the measurement feedback signals, and on the basis, take a plurality of RRUs corresponding to the optimal CSI-RS resources as a plurality of downlink RRUs corresponding to the terminals so as to transmit downlink signals.

According to the method provided by the embodiment of the invention, the plurality of downlink RRUs corresponding to the terminal are determined through the uplink signals sent by the terminal or the measurement feedback signals of the downlink signals fed back by the terminal, so that the downlink transmission is optimized, and the capacity of the combined cell is improved.

Based on any of the above embodiments, in step 1122, a plurality of CSI-RS resources are configured to the terminal, and specifically includes: and dividing all RRUs of the combined cell into a plurality of RRU groups based on the number of CSI-RS resources supported by the terminal and/or the number of CSI-RS ports supported by the terminal.

Specifically, after determining the number of CSI-RS resources supported by the terminal, the number of groups of the partitioned RRU groups may be limited to be less than or equal to the number of CSI-RS resources supported by the terminal. In addition, after determining the number of CSI-RS ports supported by the terminal, the maximum number of ports of the RRUs in the partitioned RRU group may be limited.

Any one RRU group of the multiple RRU groups thus obtained may include one or more RRUs, which is not particularly limited in the embodiment of the present invention.

Further, in the case that the number of CSI-RS resources supported by the terminal is greater than 1, but the number of CSI-RS resources is still limited, or the total number of supported CIS-RS ports is limited, all RRUs may be grouped, and when grouping specifically, RRUs with the same antenna pattern may be grouped, or RRUs with adjacent physical positions may be grouped into a group, and then grouping may be performed according to other possible grouping forms. It should be noted that, each antenna configuration corresponds to a proper CSI-RS port number configuration, and CSI-RS corresponding to all RRUs may be configured according to a maximum port number requirement in all RRUs.

Under the condition that the quantity of the CSI-RS resources supported by the terminal is larger than 1 and the quantity of the CSI-RS resources and the total number of the CIS-RS ports are not limited, each RRU can be used as an RRU group, so that one CSI-RS resource is configured for each RRU.

Based on any of the above embodiments, step 120 specifically includes: and based on a plurality of downlink RRUs corresponding to the terminal, carrying out downlink transmission on the terminal.

Specifically, when the number of channel state information reference signal (CSI-RS) resources supported by the terminal is greater than 1, the network side can configure a plurality of CSI-RS resources for the terminal to select an optimal CSI-RS resource from the plurality of CSI-RS resources, so that a plurality of RRUs corresponding to the optimal CSI-RS are used as downlink RRUs, and downlink transmission is performed on the terminal based on the downlink RRUs;

When the number of the channel state information reference signal (CSI-RS) resources supported by the terminal is 1, the network side can only configure one set of CSI-RS resources for the terminal, at the moment, downlink RRU is not determined according to a measurement feedback signal fed back by the terminal, but a plurality of RRUs are determined as downlink RRU from all RRU based on uplink signals sent by the terminal, or uplink RRU is directly used as downlink RRU, so that downlink transmission is performed on the terminal based on the downlink RRU.

Based on any embodiment, in the cell combining scenario, for the random access stage, the network side may determine the relevant peak power of the Preamble sequence by calculating the relevant power of the Preamble sequence included in the random access signal based on the random access signals sent by all RRU receiving terminals in the combined cell and then according to the random access signals received by any RRU. And obtaining the correlation peak power of the Preamble sequence contained in the random access signal received by each RRU as the uplink receiving performance of each RRU.

Then, a plurality of RRUs with highest relevant peak power can be selected from all RRUs as a plurality of uplink RRUs corresponding to the terminal, or the relevant peak power corresponding to all RRUs respectively, the antenna form of all RRUs and the like can be combined, and a plurality of RRUs are determined as a plurality of uplink RRUs corresponding to the terminal.

After determining a plurality of uplink RRUs corresponding to the terminal, carrying out antenna combination according to antennas in the uplink RRUs, then determining a detection threshold according to the number of the selected antennas, carrying out PRACH detection, and carrying out channel estimation and multi-antenna joint detection processing in a random access process by using the antennas of the uplink RRUs to carry out PUSCH/PUCCH reception in the random access process.

Based on any of the above embodiments, in the cell combining scenario, for the connection state stage, the network side may receive SRS sent by the terminal based on all RRUs in the combined cell. And then, carrying out channel estimation processing on all antennas of any RRU, so as to obtain the sum of signal-to-noise ratios of SRS received by all antennas of the RRU, and taking the sum as the signal-to-noise ratio of SRS received by the RRU. In addition, the CQI of any RRU can be measured based on SRS received on all antennas of the RRU. The signal-to-noise ratio of the SRS received by each RRU can be obtained, and/or CQI measured by each RRU based on the received SRS can be used as the uplink receiving performance of each RRU.

Then, a plurality of RRUs with highest signal-to-noise ratios and/or highest CQI can be selected from all RRUs as a plurality of uplink RRUs corresponding to the terminal, and the plurality of uplink RRUs can be determined by combining the signal-to-noise ratios, the CQI, the number limitation of the uplink RRUs and the like of each RRU.

After determining a plurality of uplink RRUs corresponding to the terminal, PUSCH/PUCCH reception may be performed based on the plurality of uplink RRUs, and SRS power, channel quality, and shaping weight measurement may be performed based on the plurality of uplink RRUs.

Based on any of the above embodiments, fig. 2 is a flow chart of a method for determining downlink RRU provided by the embodiment of the present invention, as shown in fig. 2, if the number of CSI-RS resources supported by a terminal is greater than 1, firstly, the network side divides all RRUs of a combined cell into multiple RRU groups according to the number of CSI-RS resources supported by the terminal and/or the number of CSI-RS ports supported by the terminal, and configures CSI-RS resources corresponding to each RRU group to the terminal. Nrru in the figure is the total number of RRU groups after grouping.

After receiving the plurality of CSI-RS resources, the terminal can respectively analyze the plurality of CSI-RS resources configured on the network side, select the optimal CSI-RS resource from the plurality of CSI-RS resources, and feed back measurement information of the optimal CSI-RS resource to the network side as a CSI-RS measurement feedback signal.

After receiving the measurement feedback signal fed back by the terminal, the network side can determine the optimal CSI-RS resource selected by the terminal based on the measurement feedback signal, take the RRU in the RRU group corresponding to the optimal CSI-RS resource as a plurality of downlink RRUs corresponding to the terminal, and send the PDSCH (Physical Downlink Shared Channel )/PDCCH (Physical Downlink Control Channel, physical downlink control channel) of the user based on the downlink RRUs.

Based on any one of the above embodiments, fig. 3 is a schematic structural diagram of a signal processing apparatus in a cell merging scenario provided in an embodiment of the present invention, where, as shown in fig. 3, the apparatus includes an RRU determining unit 310 and a signal processing unit 320;

the RRU determining unit 310 is configured to determine, from all RRUs, a plurality of RRUs corresponding to the terminal, where coverage areas of the plurality of RRUs corresponding to the terminal include positions of the terminal, based on signals sent by the terminal and received by all RRUs of the combined cell;

the signal processing unit 320 is configured to perform uplink receiving and/or downlink sending of a signal to the terminal based on a plurality of RRUs corresponding to the terminal.

According to the device provided by the embodiment of the invention, through the signals sent by all the terminals received by the RRUs, a plurality of RRUs corresponding to the terminals are selected to realize the signal processing of uplink receiving and/or downlink sending, and the number of RRUs applied to the communication between a network side and the terminals is reduced, so that the problems that the capacity of the cell is reduced and the signal receiving and sending cannot be normally carried out due to the combined receiving and sending of all the RRUs in the cell are avoided, the signals are only received and received in the coverage area of the plurality of RRUs corresponding to the terminals, the interference caused by the signals received by the RRUs which do not cover the positions of the terminals is avoided, the signal quality of each signal of uplink and downlink can be effectively improved, and multi-user (MU) multiplexing can be supported, thereby further improving the system capacity.

Based on any of the above embodiments, the RRU determining unit 310 includes:

an uplink RRU determining subunit, configured to determine, from all RRUs, a plurality of uplink RRUs corresponding to the terminal based on uplink signals sent by the terminal and received by all RRUs of a combined cell, where the uplink RRU is configured to perform uplink signal reception on the terminal;

and/or a downlink RRU determining subunit, configured to determine, from all RRUs, a plurality of downlink RRUs corresponding to the terminal based on uplink signals sent by the terminal and received by all RRUs of a combined cell, or measurement feedback signals of downlink signals fed back by the terminal and received by all RRUs, where the downlink RRUs are used for downlink signal transmission to the terminal.

Based on any of the above embodiments, the uplink RRU determining subunit is specifically configured to:

Based on any of the above embodiments, when the terminal is in the random access stage, the uplink signal is a random access signal, and the uplink reception performance of any RRU corresponding to the terminal includes the correlation peak power of the Preamble sequence included in the random access signal received by any RRU.

Based on any of the above embodiments, when the terminal is in the connection state stage, the uplink signal is a sounding reference signal SRS, and the uplink receiving performance of any RRU corresponding to the terminal includes a signal-to-noise ratio of the SRS received by any RRU, and/or a channel quality indication CQI obtained based on SRS measurement received by any RRU.

Based on any of the above embodiments, when the terminal is in the connected state stage, the uplink RRU determining subunit is specifically configured to:

Based on any of the above embodiments, the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of an antenna configuration of the RRUs, a total number of antennas supported by the network side for uplink reception, and a power ratio of uplink signals received between the RRUs.

Based on any of the above embodiments, the downlink RRU determining subunit includes:

a first downlink determining subunit, configured to determine, if the number of channel state information reference signal CSI-RS resources supported by the terminal is equal to 1, a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminal and received by all RRUs of a combined cell;

The second downlink determination subunit comprises a resource allocation subunit and a feedback determination subunit;

the resource allocation subunit is configured to allocate a plurality of CSI-RS resources to the terminal if the number of the CSI-RS resources of the channel state information reference signal supported by the terminal is greater than 1, so that the terminal determines an optimal CSI-RS resource based on the plurality of CSI-RS resources and feeds back a CSI-RS measurement feedback signal of the optimal CSI-RS resource;

and the feedback determination subunit is used for determining an optimal CSI-RS resource indicated by the CSI-RS measurement feedback signal based on the CSI-RS measurement feedback signal fed back by the terminal received by all RRUs of the combined cell, and taking a plurality of RRUs corresponding to the optimal CSI-RS resource as a plurality of downlink RRUs corresponding to the terminal.

Based on any of the above embodiments, the resource allocation subunit is specifically configured to:

Fig. 4 is a schematic diagram of a network side according to an embodiment of the present invention, and as shown in fig. 4, the network side 400 may include at least one processor 401, a memory 402, at least one other user interface 403, and a transceiver 404. The various components in the network side 400 are coupled together by a bus system 405. It is understood that the bus system 405 is used to enable connected communications between these components. The bus system 405 includes a power bus, a control bus, and a status signal bus in addition to a data bus. The various buses are labeled in fig. 4 as a bus system 405, which may include any number of interconnected buses and bridges, with the one or more processors, typically represented by processor 401, and the various circuits of the memory, typically memory 402, being linked together for clarity. The bus system may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., all as are well known in the art and, therefore, further description of embodiments of the present invention will not be provided. The bus interface provides an interface. The transceiver 404 may be a number of elements, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 403 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

It will be appreciated that the memory 402 in embodiments of the invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). The memory 402 of the systems and methods described in the various embodiments of the invention is intended to comprise, without being limited to, these and any other suitable types of memory.

The processor 401 is responsible for managing the bus system and general processing, the memory 402 may store computer programs or signaling used by the processor 401 in performing operations, and in particular, the processor 401 may be used to: determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminal and received by all RRUs of a combined cell, wherein the coverage area of each RRU corresponding to the terminal comprises the position of the terminal; and based on a plurality of RRUs corresponding to the terminal, carrying out uplink receiving and/or downlink sending of signals on the terminal.

The method disclosed in the above embodiment of the present invention may be applied to the processor 401 or implemented by the processor 401. The processor 401 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 401 or by signaling in software. The processor 401 described above may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory 402, and the processor 401 reads the information in the memory 402 and, in combination with its hardware, performs the steps of the above method.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in embodiments of the invention. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

Optionally, as another embodiment, the processor 401 is further configured to:

the method specifically comprises the steps that signals sent by a terminal and received by all RRUs based on a combined cell are determined from all RRUs, and the plurality of RRUs corresponding to the terminal are determined, wherein the method specifically comprises the following steps:

Optionally, the determining, based on the uplink signals sent by the terminal and received by all RRUs of the combined cell, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

Optionally, when the terminal is in the random access stage, the uplink signal is a random access signal, and the uplink receiving performance of any RRU corresponding to the terminal includes the correlation peak power of the Preamble sequence included in the random access signal received by any RRU.

Optionally, when the terminal is in a connection state stage, the uplink signal is a sounding reference signal SRS, and uplink receiving performance of any RRU corresponding to the terminal includes a signal to noise ratio of the SRS received by any RRU, and/or a channel quality indication CQI obtained based on SRS measurement received by any RRU.

Optionally, when the terminal is in the connected state stage, determining, based on uplink receiving performance of each RRU corresponding to the terminal, a plurality of uplink RRUs corresponding to the terminal from all RRUs, specifically including:

Optionally, the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of an antenna configuration of the RRUs, a total number of antennas supported by the network side for uplink reception, and a power ratio of uplink signals received between the RRUs.

Optionally, the determining, based on the uplink signals sent by the terminal and received by all RRUs of the combined cell, or measurement feedback signals of the downlink signals fed back by the terminal and received by all RRUs, a plurality of downlink RRUs corresponding to the terminal from all RRUs specifically includes:

If the number of the channel state information reference signal (CSI-RS) resources supported by the terminal is equal to 1, determining a plurality of downlink RRUs corresponding to the terminal from all RRUs based on uplink signals sent by the terminal and received by all RRUs of a combined cell;

Optionally, the configuring multiple CSI-RS resources to the terminal specifically includes:

The network side provided by the embodiment of the present invention can implement each process implemented by the network side in the foregoing embodiment, and in order to avoid repetition, details are not repeated here.

According to the network side provided by the embodiment of the invention, through the signals sent by the terminals received by all the RRUs, a plurality of RRUs corresponding to the terminals are selected to realize the signal processing of uplink receiving and/or downlink sending, and the number of RRUs applied to the communication between the network side and the terminals is reduced, so that the problems that the cell capacity is reduced and the signal receiving and sending cannot be normally carried out due to the combined receiving and sending of all the RRUs in a combined cell are avoided, the signals are received and sent only in the coverage area of the plurality of RRUs corresponding to the terminals, the interference caused by the signals received by the RRUs which do not cover the positions of the terminals is avoided, the signal quality of each uplink and downlink signal can be effectively improved, and multi-user (MU) multiplexing can be supported, so that the system capacity is further improved.

The scheme provided by the embodiment of the invention is mainly described from the perspective of a network side. It can be understood that, in order to implement the above functions, the network side provided in the embodiment of the present invention includes a hardware structure and/or a software module that perform each function. Those of skill in the art will readily appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as hardware or combinations of hardware and computer software.

Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The embodiment of the invention can divide the functional modules of the network side and the like according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules.

It should be noted that, in the embodiment of the present invention, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional modules is illustrated, and in practical application, the above-described functional allocation may be performed by different functional modules according to needs, i.e. the internal structure of the apparatus is divided into different functional modules to perform all or part of the functions described above. The specific working processes of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which are not described herein.

In the several embodiments provided by the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices, or units.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units described above may be implemented in the form of software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. With such understanding, all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, comprising signaling to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform all or part of the steps of the methods described in the various embodiments of the invention. The computer storage medium is a non-transitory (english) medium comprising: flash memory, removable hard disk, read-only memory, random access memory, magnetic or optical disk, and the like.

In another aspect, embodiments of the present invention further provide a non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor is implemented to perform the method provided by the above embodiments, comprising: determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminal and received by all RRUs of a combined cell, wherein the coverage areas of the plurality of RRUs corresponding to the terminal comprise the position of the terminal; and based on a plurality of RRUs corresponding to the terminal, carrying out uplink receiving and/or downlink sending of signals on the terminal.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A signal processing method for a cell combination scenario, comprising:

determining a plurality of RRUs corresponding to a terminal from all RRUs based on signals sent by the terminal and received by all RRUs of a combined cell, wherein the coverage area of the plurality of RRUs corresponding to the terminal comprises the position of the terminal, and the plurality of RRUs corresponding to the terminal comprise uplink RRUs and/or downlink RRUs, and the uplink RRUs and/or the downlink RRUs are determined based on the type of the signals;

2. The method for processing signals of a cell merging scenario according to claim 1, wherein the determining, from all RRUs, a plurality of RRUs corresponding to the terminal based on signals sent by the terminal received by all RRUs of the merging cell specifically includes:

3. The method for processing signals of a cell merging scenario according to claim 2, wherein the determining, based on uplink signals sent by the terminal and received by all RRUs of the merging cell, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

4. The signal processing method of the cell combining scenario according to claim 3, wherein when the terminal is in a random access phase, the uplink signal is a random access signal, and the uplink reception performance of any RRU corresponding to the terminal includes a correlation peak power of a Preamble sequence included in the random access signal received by any RRU.

5. A signal processing method in a cell combining scenario according to claim 3, wherein when the terminal is in a connected state stage, the uplink signal is a sounding reference signal SRS, and uplink receiving performance of any RRU corresponding to the terminal includes a signal-to-noise ratio of the SRS received by the any RRU, and/or a channel quality indication CQI obtained based on SRS measurement received by the any RRU.

6. The method for processing signals in a cell combining scenario according to claim 3, wherein when the terminal is in a connected state stage, determining, from all RRUs, a plurality of uplink RRUs corresponding to the terminal based on uplink reception performance of the terminal, where each RRU corresponds to one of the RRUs, specifically includes:

7. The method for processing signals in a cell combining scenario according to claim 2, wherein the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of an antenna configuration of the RRUs, a total number of antennas supporting uplink reception at a network side, and a power ratio of uplink signals received between the RRUs.

8. The method for processing signals in a cell combining scenario according to claim 2, wherein the determining, from all RRUs, a plurality of downlink RRUs corresponding to the terminal based on uplink signals sent by the terminal and received by all RRUs of the combining cell or measurement feedback signals of downlink signals fed back by the terminal and received by all RRUs specifically includes:

9. The method for processing the signals of the cell combination scenario according to claim 8, wherein the configuring a plurality of CSI-RS resources to the terminal specifically comprises:

10. A signal processing apparatus for a cell combination scenario, comprising:

the RRU determining unit is used for determining a plurality of RRUs corresponding to the terminal from all RRUs based on signals sent by the terminals and received by all RRUs of the combined cell, wherein the coverage area of the plurality of RRUs corresponding to the terminal comprises the position of the terminal, and the plurality of RRUs corresponding to the terminal comprise uplink RRUs and/or downlink RRUs, and the uplink RRUs and/or the downlink RRUs are determined based on the types of the signals;

11. A network side comprising a memory, a processor and a program stored on the memory and executable on the processor, wherein the processor implements the following steps when executing the program:

12. The network side of claim 11, wherein the determining, based on signals sent by the terminal and received by all RRUs of the combined cell, a plurality of RRUs corresponding to the terminal from all RRUs specifically includes:

13. The network side of claim 12, wherein the determining, based on the uplink signals sent by the terminal and received by all RRUs of the combined cell, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

14. The network side of claim 13, wherein when the terminal is in a random access phase, the uplink signal is a random access signal, and the uplink reception performance of any RRU corresponding to the terminal includes a correlation peak power of a Preamble sequence included in the random access signal received by the any RRU.

15. The network side of claim 13, wherein when the terminal is in a connected state stage, the uplink signal is a sounding reference signal SRS, and uplink reception performance of any RRU corresponding to the terminal includes a signal-to-noise ratio of the SRS received by the any RRU, and/or a channel quality indication CQI obtained based on SRS measurement received by the any RRU.

16. The network side of claim 13, wherein when the terminal is in a connected state stage, the determining, based on uplink reception performance of each RRU corresponding to the terminal, a plurality of uplink RRUs corresponding to the terminal from all RRUs specifically includes:

17. The network side of claim 12, wherein the number of the plurality of uplink RRUs corresponding to the terminal is determined based on at least one of an antenna configuration of the RRUs, a total number of antennas supported by the network side for uplink reception, and a power ratio of received uplink signals between the RRUs.

18. The network side of claim 12, wherein the determining, from among all RRUs, a plurality of downlink RRUs corresponding to the terminal based on uplink signals sent by the terminal and received by all RRUs of the combined cell, or measurement feedback signals of downlink signals fed back by the terminal and received by all RRUs, specifically includes:

19. The network side according to claim 18, wherein the configuring the plurality of CSI-RS resources to the terminal specifically includes:

20. A non-transitory computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the steps of the signal processing method of the cell merging scenario of any one of claims 1 to 9.