Cell resource configuration method, device, equipment, storage medium and program product

Abstract

The invention discloses a cell resource configuration method and device, equipment, a storage medium and a program product, relates to the technical field of computers, and discloses a cell resource configuration method which comprises the following steps: dividing a coverage area of an indoor distribution expanded skin cell of an indoor distribution expanded skin base station into at least two sub-cells, the at least two sub-cells share the physical cell identity of the indoor distribution skin expansion cell; configuring a channel state information reference signal (CSI-RS) resource set for a synchronous signal block (SSB) scanning area corresponding to each sub-cell, wherein a picosecond remote radio unit (pRRU) of each sub-cell broadcasts a corresponding CSI-RS reference signal and an SSB signal; and configuring a physical random access channel (PRACH) resource for the SSB scanning area corresponding to each sub-cell. According to the invention, space division multiplexing of the baseband time-frequency resources is realized, and the utilization rate of the baseband resources is improved.

Description

Technical Field

[0001] The present application relates to the field of computer technology, and in particular to a method, device, equipment, storage medium and program product for configuring cell resources. Background Art

[0002] Usually, the expansion of the number of cells in indoor base stations can only be achieved by cell splitting. For example, if the base station supports a 2T2R cell and the number of users accessing is too large and an additional cell is needed, the 2T2R cell needs to be split into two 1T1R cells. Since the two cells after the split have independent 1T1R baseband resources, if the number of users in cell 1 is large, and even if the number of users in cell 2 is small, cell 1 cannot reuse the idle baseband resources of cell 2, resulting in a waste of baseband resources of the base station. That is, cell splitting will lead to a waste of baseband resources due to uneven cell capacity. Summary of the invention

[0003] The main purpose of the present application is to provide a cell resource configuration method, apparatus, device, storage medium and program product, aiming to solve the technical problem of baseband resource waste caused by uneven cell capacity.

[0004] To achieve the above purpose, the present application proposes a method for configuring cell resources, the method comprising:

[0005] Divide the coverage area of ​​a room expansion cell of the room expansion base station into at least two sub-cells, wherein the at least two sub-cells share the physical cell identity of the room expansion cell;

[0006] A channel state information reference signal CSI-RS resource set is configured for a synchronization signal block SSB scanning area corresponding to each of the sub-cells, and a picosecond remote radio unit pRRU of each of the sub-cells broadcasts a corresponding CSI-RS reference signal and SSB signal;

[0007] Physical random access channel PRACH resources are configured for the SSB scanning area corresponding to each of the sub-cells.

[0008] In one embodiment, after the step of configuring PRACH resources for the SSB scanning area corresponding to each of the sub-cells, the method further includes:

[0009] Quasi co-location information QCL-Info configuration information is sent to the terminal, and the QCL-Info configuration information is used to define the co-location relationship between the demodulation reference signal DMRS corresponding to the physical downlink control channel PDCCH and the physical downlink shared channel PDSCH, and the SSB signal or CSI-RS reference signal.

[0010] In one embodiment, the method comprises:

[0011] Obtain channel state information reported by the terminal through the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH;

[0012] The sub-cell where the terminal's service is located is determined according to the reference signal resource indication CRI index and the SSB index of the channel state information.

[0013] In one embodiment, the method comprises:

[0014] Acquire CSI information of other sub-cells reported by the terminal, and determine signal quality of other sub-cells according to the CSI information of the other sub-cells;

[0015] When the signal quality of the other sub-cell exceeds the signal quality of the current sub-cell accessed by the terminal and is maintained for a preset time, the service of the terminal is switched to the other sub-cell.

[0016] In one embodiment, the step of switching the service of the terminal to another sub-cell includes:

[0017] Re-send the QCL-Info configuration information of PDSCH and PDCCH to the terminal;

[0018] The other sub-cells are paired with the terminals through the QCL co-location relationship, and the mapping relationship between the other sub-cells and the terminals is stored in the SSB of the other sub-cells.

[0019] In one embodiment, the step of configuring a CSI-RS resource set for the SSB scanning area corresponding to each of the sub-cells includes:

[0020] The number of non-zero power reference signal resources in the CSI-RS resource set is configured according to the number of antennas of the pRRU in the SSB scanning area corresponding to each of the sub-cells.

[0021] In addition, to achieve the above-mentioned purpose, the present application also proposes a cell resource configuration device, the cell resource configuration device comprising: a division module, used to divide the coverage area of ​​a room expansion cell of a room expansion base station into at least two sub-cells, the at least two sub-cells share the physical cell identity of the room expansion cell;

[0022] A first configuration module is used to configure a channel state information reference signal CSI-RS resource set for a synchronization signal block SSB scanning area corresponding to each of the sub-cells, and a picosecond remote radio unit pRRU of each of the sub-cells broadcasts a corresponding CSI-RS reference signal and SSB signal;

[0023] The second configuration module is used to configure physical random access channel PRACH resources for the SSB scanning area corresponding to each of the sub-cells.

[0024] In addition, to achieve the above-mentioned purpose, the present application also proposes a cell resource configuration device, which includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the cell resource configuration method as described above.

[0025] In addition, to achieve the above-mentioned purpose, the present application also proposes a storage medium, which is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the cell resource configuration method described above are implemented.

[0026] In addition, to achieve the above-mentioned purpose, the present application also provides a computer program product, which includes a computer program, and when the computer program is executed by a processor, the steps of the cell resource configuration method described above are implemented.

[0027] One or more technical solutions proposed in this application have at least the following technical effects:

[0028] The coverage area of ​​a room-based expansion cell of the room-based expansion base station is divided into at least two sub-cells; a channel state information reference signal CSI-RS resource set is configured for the synchronization signal block SSB scanning area corresponding to each sub-cell, and the picosecond remote radio unit pRRU of each sub-cell broadcasts the corresponding CSI-RS reference signal and SSB signal; a physical random access channel PRACH resource is configured for the SSB scanning area corresponding to each sub-cell. By distributing the baseband resource pool of the base station to the sub-cells composed of different SSB scanning areas, the terminal of each sub-cell is paired with the sub-cell to which it is associated, so that the terminals of different sub-cells share the same baseband time-frequency resources without interfering with each other, the space division multiplexing of baseband time-frequency resources is realized, and the utilization rate of baseband resources is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0031] Figure 1 A flowchart of the first embodiment of the method for configuring cell resources in this application is provided;

[0032] Figure 2 A schematic diagram of the division of the SSB scanning area under a room-based expansion base station in this application;

[0033] Figure 3 A schematic diagram of the system architecture model of multi-user MIMO in the base station and terminal in this application;

[0034] Figure 4 Schematic diagram of the time-frequency resource distribution of SSB and its associated CSI-RS in this application;

[0035] Figure 5 A schematic diagram of the mapping relationship between SSB and preamble index in this application;

[0036] Figure 6 A schematic diagram of a process provided in Embodiment 2 of the method for configuring cell resources of the present application;

[0037] Figure 7 Schematic diagram of the QCL quasi-co-location relationship of the SSB and its associated CSI-RS in this application;

[0038] Figure 8 A flowchart of the third embodiment of the method for configuring cell resources in this application is provided;

[0039] Fig. 9 A schematic diagram of single-user SU-MIMO resource allocation in this application;

[0040] Fig.10 This is a schematic diagram of MU-MIMO resource allocation for indoor cell expansion in this application;

[0041] Fig.11 A flowchart of the fourth embodiment of the method for configuring cell resources in this application is provided;

[0042] Fig.12 This is a schematic diagram of the terminal periodically measuring SSB and CSI-RS and reporting CSI in this application;

[0043] Fig.13 A schematic diagram of the logical structure of the cell resource configuration device of this application;

[0044] Fig.14 This is a schematic diagram of the device structure of the hardware operating environment involved in the cell resource configuration method in the embodiment of the present application.

[0045] The purpose, features and advantages of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0046] It should be understood that the specific embodiments described herein are only used to explain the technical solutions of the present application and are not used to limit the present application.

[0047] In order to better understand the technical solution of the present application, a detailed description will be given below in conjunction with the accompanying drawings and specific implementation methods.

[0048] The main solution of the embodiment of the present application is: divide the coverage area of ​​a room-based expansion cell of a room-based expansion base station into at least two sub-cells; configure a channel state information reference signal CSI-RS resource set for the synchronization signal block SSB scanning area corresponding to each sub-cell, and the picosecond remote radio unit pRRU of each sub-cell broadcasts the corresponding CSI-RS reference signal and SSB signal; configure a physical random access channel PRACH resource for the SSB scanning area corresponding to each sub-cell.

[0049] In this embodiment, for the convenience of description, the following description is made by taking the cell resource configuration device as the execution subject.

[0050] Since cell splitting will lead to waste of baseband resources due to uneven cell capacity. The present application provides a solution, by distributing the baseband resource pool of the base station to sub-cells composed of different SSB scanning areas, and pairing the terminal of each sub-cell with the sub-cell to which it is associated, the purpose of achieving that terminals in different sub-cells share the same baseband time-frequency resources without interfering with each other is achieved, realizing the spatial division multiplexing of baseband time-frequency resources, and improving the utilization rate of baseband resources.

[0051] It should be noted that the execution subject of this embodiment may be a computing service device with data processing, network communication and program running functions, such as a tablet computer, a personal computer, a mobile phone, etc., or an electronic device capable of realizing the above functions, a cell resource configuration device, etc. The following takes the cell resource configuration device as an example to illustrate this embodiment and the following embodiments.

[0052] Based on this, the embodiment of the present application provides a method for configuring cell resources, referring to Figure 1 , Figure 1 This is a flowchart of the first embodiment of the cell resource configuration method of the present application.

[0053] In this embodiment, the cell resource configuration method includes steps S10 to S30:

[0054] Step S10: dividing the coverage area of ​​a room expansion cell of the room expansion base station into at least two sub-cells, wherein the at least two sub-cells share the physical cell identity of the room expansion cell.

[0055] It should be noted that one or more pRRUs (Pico Remote Radio Unit) covering the same area are formed into a sub-cell, which serves as a relatively independent coverage area of ​​the main cell. According to this rule, an indoor expansion cell can be divided into one or more sub-cells, and these sub-cells share the PCI (Physical Cell Identity) of the indoor expansion cell. The pRRU of the sub-cell broadcasts independent SSB (Synchronization Signal Block) and CSI-RS (Channel State Information-Reference Signals), allocates independent PRACH (Physical Random Access Channel) resources associated with the SSB, and allows users to independently access the sub-cell. These different sub-cells can be simulated as wide-beam scanning areas of different SSBs, which are spatially independent of each other.

[0056] For the FR1 band, the maximum number of SSBs in the band below 3GHz is 4, and up to 4 sub-cells can be configured to correspond to 4 SSBs. In the 3GHz-6GHz band, the maximum number of SSBs is 8, so up to 8 sub-cells can be configured to correspond to 8 SSBs.

[0057] For a single cell under the same indoor expansion base station, the coverage area of ​​this cell is divided into S relatively independent sub-cells. Figure 2 As shown, the indoor expansion cell is divided into 4 sub-cells, each sub-cell is allocated an SSB for broadcasting, which is called an SSB scanning area. These S sub-cells share the physical cell identifier of the indoor expansion cell and belong to different SSB scanning areas of the same cell.

[0058] Multi-user MU-MIMO (Multi-User Multiple-Input Multiple-Output) modeling of indoor expansion networks, such as Figure 3 As shown in the figure, a narrowband downlink single-cell multi-user distributed antenna system is configured as follows: Tx RF transmission channels, with N antennas; a single base station cell has K service terminals, each terminal has M receiving antennas, Rx RF receiving channels; the number of data streams received by each terminal is d, and satisfies The total number of data streams supported by the baseband is: N s =K*d.

[0059] In the hybrid beamforming model, the base station first uses a The digital precoding matrix V d Perform digital beamforming and then pass The Tx RF transmission channel is up-converted to the specified carrier frequency, and finally a phase shifter is used to realize the dimensional RF analog precoding matrix V rf Multiply (V rf is the constant modulus constraint matrix, i.e. |V rf (i,j)| 2 =1), construct the final transmission signal in the analog domain. Exemplarily, the transmission signal of the base station is shown in the following formula:

[0060]

[0061] Among them, s k is the baseband data stream signal of the kth terminal, and the number of data streams received by each terminal is d; N s is the total number of data streams supported by the base station; K is the total number of terminals scheduled in the cell at each moment; is the digital beamforming precoding matrix used by a certain terminal; s contains the data streams of a total of K terminals in the cell, s∈C Ns ×1 .

[0062] For the kth user, the received signal can be modeled as:

[0063]

[0064] Among them, H k ∈C M×N represents the complex channel gain matrix from the base station transmitting antenna to the kth user receiving antenna; z k is Gaussian additive white noise.

[0065] If there is a kth user terminal in an SSB scanning area of ​​a room-based expansion base station, and the remaining K-1 terminals are not in the SSB scanning area, the base station will The matrix is ​​set to 0 matrix, and the SSB scanning area is identified by pairing with the terminal, eliminating the influence of these users on the kth terminal, that is, Finally, the signal y of terminal k in the SSB scanning area is obtained k .

[0066] Step S20, configuring a channel state information reference signal CSI-RS resource set for the synchronization signal block SSB scanning area corresponding to each of the sub-cells, and the picosecond remote radio unit pRRU of each of the sub-cells broadcasts the corresponding CSI-RS reference signal and SSB signal.

[0067] Expand the coverage area of ​​a single cell to ensure the signal quality of terminals in different sub-cells. The sub-cells reuse the original single-cell PCI, spectrum resources, and baseband resources, reducing the complexity of network planning and optimization, and maximizing the use of the base station's baseband resource pool.

[0068] It should be noted that for a single cell under the same indoor expansion base station, the coverage area of ​​the cell is divided into relatively independent S sub-cells. Figure 2 As shown, each sub-cell is allocated an SSB for broadcasting, which is called an SSB scanning area. The S sub-cells share the physical cell ID (PCI) of the indoor expansion cell and belong to different SSB scanning areas of the same cell.

[0069] For the FR1 band, the maximum number of SSBs below 3 GHz is 4, and up to 4 sub-cells can be configured to correspond to 4 SSBs. In the 3 GHz-6 GHz band, the maximum number of SSBs is 8, so up to 8 sub-cells can be configured to correspond to 8 SSBs.

[0070] The base station configures the SSB scanning area in inOneGroup(8bits) of SIB1: when SSB max number = 4 per half frame, the leftmost 4 bits are valid, which are SSB 0 to 3 from left to right; when SSB max number = 8 per half frame, all 8 bits are valid, which are SSB 0 to 7 from left to right.

[0071] In order to improve the accuracy of the terminal's measurement of the signal quality of the SSB scanning area, a CSI-RS resource set with a QCL type D co-location relationship is configured for each SSB scanning area. Among them, in MU-MIMO scheduling and beamforming, the QCL type D co-location relationship allows the base station to match the DMRS (DeModulation Reference Signals) of the PDSCH (Physical Downlink Shared Channel) and PDCCH (Physical Downlink Control Channel) with the beam direction of the SSB or CSI-RS associated with the terminal.

[0072] It should be noted that the number of non-zero power reference signal resources in the CSI-RS resource set is configured according to the number of antennas of the pRRU in the SSB scanning area corresponding to each sub-cell. Among them, the CSI-RS resource set contains 2 or 4 NZP CSI-RS (Non-Zero Power CSI-RS, non-zero power channel state information reference signal) resources, corresponding to the pRRU with 2 antennas and 4 antennas respectively. The time domain symbol position of the CSI-RS reference signal is the same as the time domain symbol position of the SSB, and the frequency domain position is above or below the SSB frequency domain position, such as Figure 4 shown.

[0073] In each sub-cell associated with an SSB, a single-port CSI-RS reference signal associated with the SSB is configured to provide the terminal with a measurement reference signal, thereby improving the accuracy of the terminal's measurement of the reference signal. The terminal measures the SSB or CSI-RS and then feeds back the measured cri-RSRP or ssb-index-RSRP to the base station. Since the pRRU of the indoor expansion base station does not have the beamforming capability, it is not necessary to configure multiple ports or multiple CSI-RS resource sets for the terminal to measure the GoB (Group of Beams) beam refinement, which simplifies the design and implementation.

[0074] Step S30, configuring physical random access channel PRACH resources for the SSB scanning area corresponding to each of the sub-cells.

[0075] In the initial access phase, the base station allocates a PRACH preamble index to each SSB-associated sub-cell, which is configured by ssb-perRACH-OccasionAndCB-PreamblesPerSSB. The base station determines which sub-cell the terminal accesses from based on the preamble index reported by the terminal when it accesses.

[0076] The base station allocates an access opportunity for the RACH (Random Access Channel) process for each SSB scanning area. The RACH opportunity is an area specified in the time domain and frequency domain that can be used to receive the PRACH preamble code. In NR (New Radio), SSB is associated with different beams, and the terminal selects a beam and uses the beam to send PRACH. In a room-based network, the SSB scanning area of ​​a sub-cell can be considered as a wide beam. In order to know which beam the terminal has selected, the base station needs to configure a specific mapping between SSB and RACH opportunities. By detecting which RO (RACH Occasion) the terminal sends PRACH to, the base station can determine which SSB scanning area the terminal has selected to access the cell.

[0077] The mapping between SSB and RACH occasions is defined by the following two RRC (Radio Resource Control) parameters. The RRC parameters include msg1-FDM and ssb-perRACH-OccasionAndCB-PreamblesPerSSB, as shown in the following table. msg-FDM specifies how many ROs are allocated in the frequency domain in each time slot. sb-perRACH-OccasionAndCB-PreamblesPerSSB specifies how many SSBs can be mapped to one RO and how many PRACH preamble indices can be mapped to a single SSB.

[0078]

[0079] The N SSBs associated with a PRACH opportunity RO and the R contention-based preambles for each SSB of each valid PRACH RO are configured by the ssb-perRACH-OccasionAndCB-PreamblesPerSSB parameter.

[0080] If N<1, one SS (Synchronization Signal) or PBCH (Physical Broadcast Channel) block is mapped to 1 / N consecutive PRACH ROs, and the base station allocates R consecutive contention-based preambles associated with the SSB index of each valid PRACH RO starting from preamble index 0.

[0081] If N ≥ 1, the base station allocates R contention-based preamble codes with consecutive indices associated with SS or PBCH block n (0 ≤ n ≤ N-1), and each valid PRACH preamble code index starts from Start, where It is provided by the higher-layer RRC parameter totalNumberOfRA-Preambles and is an integer multiple of N. The CB preambles are divided into N groups, and each SSB is assigned a group of R. If N>1, the parameter totalNumberOfRA-Preambles is configured as an integer multiple of N.

[0082] For a single cell divided into N (N ≥ 1) SSB scanning areas, all N SSB scanning areas correspond to one RO. Each SSB scanning area is configured with 1 to [64 / N] contention-based PRACH preamble codes according to the number of access users. Each valid PRACH occasion is indexed by the preamble code. start.

[0083] For example, totalNumberOfRA-Preambles=64; ssb-perRACH-Occasion=4; CB-PreamblesPerSSB=n12.

[0084] The 64 preambles are divided into 4 groups, each with 64 / 4=16 preambles. The starting preamble index of each group is {0, 16, 32, 48}. 4 SSBs are mapped to 1 RO, CB preamble index 0-11 is assigned to SSB0, 16-27 is assigned to SSB1, 32-43 is assigned to SSB2, and 48-59 is assigned to SSB3. The base station determines which SSB scanning area the terminal accesses the cell from by the index of the preamble code sent by the terminal, and pairs the terminal with the SSB scanning area, such as Figure 5 shown.

[0085] This embodiment reduces the complexity of network optimization and planning, greatly reduces network configuration and maintenance costs, and avoids the drawback that capacity and baseband resources cannot be shared between different cells due to cell splitting, that is, after the cell splitting, each cell independently allocates baseband resources and cannot be reused in a coordinated manner. The MU-MIMO function of the indoor expansion network is realized, allowing multiple terminals to share the same PRB resources in different SSB scanning areas, thereby improving the utilization rate of baseband resources.

[0086] In the technical solution of this embodiment, the coverage area of ​​a room-based expansion cell of the room-based expansion base station is divided into at least two sub-cells; a channel state information reference signal CSI-RS resource set is configured for the synchronization signal block SSB scanning area corresponding to each sub-cell, and the picosecond remote radio unit pRRU of each sub-cell broadcasts the corresponding CSI-RS reference signal and SSB signal; a physical random access channel PRACH resource is configured for the SSB scanning area corresponding to each sub-cell. By distributing the baseband resource pool of the base station to the sub-cells formed by different SSB scanning areas, the terminal of each sub-cell is paired with the sub-cell to which it is associated, so as to achieve the purpose of terminals in different sub-cells sharing the same baseband time-frequency resources without interfering with each other, realizing the spatial division multiplexing of baseband time-frequency resources, and improving the utilization rate of baseband resources.

[0087] Based on the first embodiment of the present application, in the second embodiment of the present application, the same or similar contents as those in the above embodiment can refer to the above introduction, and will not be repeated later. Figure 6 , after step S30, further comprising:

[0088] Step S40, sending quasi co-location information QCL-Info configuration information to the terminal, wherein the QCL-Info configuration information is used to define the co-location relationship between the demodulation reference signal DMRS corresponding to the physical downlink control channel PDCCH and the physical downlink shared channel PDSCH, and the SSB signal or CSI-RS reference signal.

[0089] It should be noted that the base station sends QCL-Info (Quasi-Colocated Information) configuration information to the terminal to configure the QCL co-location relationship of the terminal's downlink PDCCH, PDSCH and SSB.

[0090] The antenna port defines the correlation between symbols within the same antenna port, and QCL (Quasi-Colocated) defines the correlation between symbols from different antenna ports. The terminal can be configured with a configuration list of up to M TCI-States in the higher-layer parameter PDSCH Config to decode the PDSCH based on the detected PDCCH, which has DCI (Downlink Control Information) for the terminal and a given service cell, where M depends on the terminal capability maxNumberConfiguredTCIstatesPerCC. Each TCI-State contains parameters for configuring a quasi-co-location relationship between one or two downlink reference signals and the DMRS (DeModulation Reference Signals) port of the PDSCH and the DMRS port of the PDCCH. The quasi-co-location relationship is configured by the high-layer parameters qcl-Type1 for the first DL RS (Downlink Reference Signals) and qcl-Type2 for the second DL RS.

[0091] The current 3GPP (3rd Generation Partnership Project) defines several parameters to define the channel conditions listed below, including: Doppler shift, Doppler spread, average delay, late permutation, and spatial Rx parameters. One or more of these parameters will form the characteristics of the two signal shared channel model, and the grouping of these factors is defined as the QCL type. The quasi-co-location type corresponding to each DL RS is given by the higher-level parameter qcl Type in qcl Info.

[0092] TCI-State contains the QCL relationship between the downlink reference signal and the PDSCH DMRS / PDCCH DMRS / CSI-RS port. The network can configure the QCL relationship between the two downlink reference signals through qcl-Type1 and qcl-Type2. If two downlink reference signals are configured, the value of QCL type should be different. QCL means that the characteristics of the two antenna ports of the transmitted signal (target signal and reference signal) are relatively close, indicating the similarity between the source reference signal and the target reference signal, representing the spatial channel characteristics. The similarity is divided into 4 types, as shown below:

[0093] QCL-Type A: Doppler shift, Doppler spread, average delay, and delay spread are similar;

[0094] QCL-Type B: Doppler shift, Doppler spread} are similar in two aspects;

[0095] QCL-Type C: Doppler shift and average delay are similar;

[0096] QCL-Type D: The spatial parameter is the similarity of beam information.

[0097] For example, when the PDSCH DM-RS is configured with reference signal SSB and Type D is configured, it indicates that the transmit beam of the PDSCH DMRS is very similar (same or close) to the beam direction of the SSB. The beam is directional, and the TCI state relationship mainly provides a reference template for antenna transmission and reception. As shown in the following table, according to the configured reference signal, the spatial domain characteristics are set to facilitate better communication between the terminal and the base station in the same SSB scanning area.

[0098]

[0099]

[0100] For beam management of the SSB scanning area, QCL-Info.QCL-Type is type-D (Spatial Rx parameter). When the QCL Info of the PDCCH / PDSCH DMRS is configured as SSB (with the above SSB index) and QCL Type = typeD, the beam used for PDCCH / PDSCH transmission is a QCL that is quasi-co-located (similar) to the configured SSB. After the base station activates the configured QCL-Info, the terminal will receive PDCCH and PDSCH data within the sub-cell range of the SSB.

[0101] The base station sends one or more CSI-RS reference signals (CSI-RS, corresponding to CSI-RS Resource Indicator, CRI) in the initial access SSB scanning area; the terminal measures the CSI-RS reference signal, obtains the L1-RSRP result, and reports the measurement results of different CRIs.

[0102] For example, the following Figure 7 As shown, the base station sends CSI-RS 64, 65, 66, 67 in SSB0, and CSI-RS68, 69, 0, 71 in SSB1. After the CSI-RS is configured, it has directionality, but the terminal cannot perceive the directionality. After that, the terminal reports CRI, L1-RSRP and other information, and the base station can know the relative specific position and directionality information of the terminal. PDCCH or PDSCHDMRS can set a QCL quasi-co-location relationship with CSI-RS, so that the directionality can be well determined. When the terminal is in poor signal condition, the base station can control the terminal to switch the SSB scanning area. The base station selects the SSB scanning area corresponding to the CSI-RS with the strongest L1-RSRP for downlink channel transmission, so that the terminal switches to the sub-cell with good signal condition.

[0103] In the technical solution of this embodiment, SSB and CSI signal measurement resources with a QCL typeD co-location relationship that overlaps in the time domain are provided for the terminal of each sub-cell. Different CSI-RS resources correspond to different transmitting antenna ports of the base station, so that the results of terminal measurement reporting are refined, and the accuracy of reference signal quality measurement is improved. The measurement accuracy of CSI-RS refined resources is improved by at least 3db compared with the simple SSB wide-beam RSRP measurement accuracy.

[0104] Based on the first or second embodiment of the present application, in the third embodiment of the present application, the same or similar contents as those in the above-mentioned embodiment 1 can be referred to the above introduction, and will not be repeated in the following. Figure 8 , the cell resource configuration method further includes:

[0105] Step S50, obtaining channel state information reported by the terminal through a physical uplink control channel PUCCH or a physical uplink shared channel PUSCH;

[0106] Step S60: Determine the sub-cell where the service of the terminal is located according to the reference signal resource indication CRI index and the SSB index of the channel state information.

[0107] After pairing the terminal with the SSB scanning area, the base station starts multi-user MU-MIMO scheduling of the terminals in each SSB scanning area. Assuming that the pRRU has a maximum of four logical antenna ports, it can send a maximum of four (depending on the RI) spatial streams. The maximum total number of baseband data streams supported by the base station is 16 streams. If the base station only supports single-user SU-MIMO, UE0, UE1, UE2 and UE3 can only perform frequency division multiplexing of PRBs, and all terminals can only multiplex 4 baseband data streams of the base station, such as Fig. 9 As shown:

[0108] UE0, UE1, UE2 and UE3 must be allocated different PRB resources in the frequency domain, and these PRB resources will be mapped to 4-layer baseband data streams and sent to RRU. Therefore, the terminals in the cell cannot reuse the same frequency domain PRB resources, and cannot fully utilize the 16 data streams of the baseband. If there are too many users accessing the cell, it is necessary to allocate 4 data streams from the baseband resource pool of the base station to add a cell for user diversion, or split the original 4T4R cell into two 2T2R cells. Either way, it will cause configuration changes and restarts of the base station, making network configuration and operation and maintenance difficult.

[0109] If the base station supports multi-user MU-MIMO, UE0, UE1, UE2 and UE3 can perform repeated PRB allocation, and all terminals can be allocated the same PRB resources and reuse the 16 baseband data streams of the base station. Fig.10 As shown, a room expansion cell (PCI=101) is divided into four sub-cells, each of which is a relatively independent SSB scanning area (eg, different floors or different offices) in space.

[0110] 4 terminals are connected to different SSB scanning areas. UE0, UE1, UE2 and UE3 can transmit data on the same PRB resources without worrying about mutual interference. Since different terminals are in different SSB scanning areas, they are relatively independent in space, and the interference between different SSB scanning areas is small. In addition, the scanning area where the terminal is located only transmits the baseband IQ data stream of the terminal, that is, the AxC data of each SSB scanning area does not contain the terminal data of other SSB scanning areas. This not only reduces the transmission rate of AxC in the front transmission and saves the bandwidth resources of the optical fiber, but also greatly reduces the mutual interference between terminals in different SSB scanning areas. Since each SSB scanning area occupies 4 baseband data streams, all 16 baseband data streams of the base station are allocated to this cell, and each SSB scanning area is allocated 4 baseband data streams, the baseband resources can be fully utilized, and there is no need to split the cell.

[0111] The base station configures the L1-RSRP measurement of SSB and CSI-RS to the terminal, and performs wide beam switching and closed-loop MU-MIMO control similar to macro base stations. The base station sends an RRCReconfiguration message to configure periodic CSI-ReportConfig to the terminal. The base station sends SSB and CSI-RS, and the terminal reports SSB and CSI-RS feedback; the channel capture terminal calculates the feedback based on CSI (Channel State Information) (via UCI), and the base station uses the measurement results returned by CSI to control the MU-MIMO processing and decide whether to switch the terminal to other SSB scanning areas; CSI feedback includes: Rank Indicator (RI): the number of independent spatial layers that the receiver can decode; Channel Quality Indicator (CQI); CSI-RS Resource Indicator (CRI): Indicates the CSI-RS index of the preferred beam; SSBRI: Index of SS / PBCH.

[0112] In the initial access phase, the base station allocates a PRACH preamble index to each SSB-associated sub-cell (configured by ssb-perRACH-OccasionAndCB-PreamblesPerSSB). The base station determines which sub-cell the terminal accesses from based on the preamble index reported by the terminal when it accesses.

[0113] During the stage of establishing and conducting data services at the terminal, the terminal reports CSI information through PUCCH or PUSCH, where the reported information is cri-RSRP and ssb-Index-RSRP. The base station determines in which sub-cell the terminal is performing services based on the CRI and SSB index of cri-RSRP and ssb-Index-RSRP.

[0114] The base station determines the sub-cell range where the terminal is located by judging the SSB index or CSI-RS index associated with the terminal. The base station determines the pRRU coverage area to which the terminal is connected by judging the SSB index or CSI-RS index associated with the terminal, and determines the HUB Id. Once the HUB associated with the terminal is determined, the base station only sends the symbol data stream of the terminal (belonging to the layer of the terminal) and the corresponding forward transmission time domain IQ data to the HUB. Other HUBs that are not associated with the terminal will not receive the data of the terminal, reducing signal interference between sub-cells.

[0115] In the technical solution of this embodiment, the base station determines the pRRU coverage area to which the terminal is connected by judging the SSB index or CSI-RS index associated with the terminal, and determines the HUB ID. The base station only sends the symbol data stream of the terminal and the corresponding forward transmission time domain IQ data to the HUB, and other HUBs not associated with the terminal will not receive the data of the terminal, thereby reducing signal interference between sub-cells.

[0116] Based on any one of the first to third embodiments of the present application, in the fourth embodiment of the present application, the same or similar contents as those in the above embodiments can refer to the above introduction, and will not be repeated later. Fig.11 , the cell resource configuration method further includes:

[0117] Step S70, obtaining CSI information of other sub-cells reported by the terminal, and determining signal quality of other sub-cells according to the CSI information of other sub-cells;

[0118] Step S80: When the signal quality of the other sub-cell exceeds the signal quality of the current sub-cell accessed by the terminal and is maintained for a preset time, the service of the terminal is switched to the other sub-cell.

[0119] The base station configures the L1-RSRP measurement of SSB and CSI-RS to the terminal, and performs wide beam switching and closed-loop MU-MIMO control similar to macro base stations. The base station sends an RRCReconfiguration message to configure periodic CSI-ReportConfig to the terminal. The base station sends SSB and CSI-RS, and the terminal reports SSB and CSI-RS feedback; the channel capture terminal calculates the feedback based on CSI (Channel State Information) (via UCI), and the base station uses the measurement results returned by CSI to control the MU-MIMO processing and decide whether to switch the terminal to other SSB scanning areas; CSI feedback includes: Rank Indicator (RI): the number of independent spatial layers that the receiver can decode; Channel Quality Indicator (CQI); CSI-RS Resource Indicator (CRI): Indicates the CSI-RS index of the preferred beam; SSBRI: Index of SS / PBCH.

[0120] RRCReconfiguration configures the Resource and Report of CSI measurement and all the configurations related to them are under the CSI-MeasConfig object, where CSI-ResourceConfig corresponds to ResourceSetting and CSI-ReportConfig corresponds to Report Setting. CSI-ResourceConfig configuration specifies what type of reference signal the cell should use, such as nzp-CSI-RS-SSB, csi-IM-Resource, and also configures the type of resource, such as periodic, aperiodic, and semi-persistent.

[0121] CSI ReportConfig specifies which of the CSI-ResourceConfig to use for measurement, with a mapping table between the measurement type and the corresponding CSR ResourceConfig ID. Each CSI report (CSI-ReportConfig) is associated with a CSI resource configuration (CSI-ResourceConfig), and each CSI-ResourceConfig is associated with a BWP and a resource type for measurement reporting (non-periodic, semi-persistent, periodic). Each CSI-RS resource set contains a list of CSI-RS sources (NZP CSI-RS and CSI-SSB) identified by a CSI resource ID. CSI reporting may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a SS / PBCH block resource indicator (SSBRI), a layer indicator (LI), a rank indicator (RI) and / or L1-RSRP. This case mainly uses the CRI and SSBRI reported by the terminal to determine the best SSB scanning area set measured by the terminal, that is, the sub-cell set. The base station selects the best SSB scanning area based on the measurement results, and sends the co-located TCI-State index of the QCL-Info that activates the SSB scanning area to the terminal, completing the process of switching to another sub-cell during the terminal's movement.

[0122] The SSB scanning area switching is performed by periodic terminal measurement reporting. For the periodic CSI report on PUCCH, the periodicity T CSI (measured in time slots) and the time slot offset T_offset are configured by the higher layer parameter reportSlotConfig. f and the time slots in the frame Send a CSI report when the following conditions are met:

[0123]

[0124] The RRC parameter reportQuantity indicates what is to be measured, wherein the type of reportQuantity indicates that the configuration is supported by one or both of cri-RSRP and ssb-Index-RSRP.

[0125] cri-RSRP: The terminal reports CRI and the RSRP corresponding to CRI, which is used for beam management based on CSI-RS. CSI-RS and SSB are QCL typeD co-located, so the measurement result of CSI-RS can represent the measurement result of SSB. The CRI measurement result is used to switch the SSB scanning area without beam management.

[0126] ssb-Index-RSRP: The terminal reports ssb-Index and the RSRP corresponding to ssb-Index for SSB-based beam management. The SSB scan area is switched using the SSB measurement results without beam management.

[0127] The base station selects the SSB scanning area with the strongest L1-RSRP according to the cri-RSRP and ssb-Index-RSRP measurement result set reported by the terminal. When the SSB scanning area is different from the scanning area where the terminal originally resides, the base station sends RRCReconfiguration to the terminal to reconfigure the TCI-State index of the PDCCH / PDSCH co-located with the new strongest SSB scanning area QCL-Info, and activate the new TCI-State index. The following is the periodic measurement reporting process proposed in this case. Fig.12 shown.

[0128] It should be noted that when the cri-RSRP or ssb-index-RSRP of other sub-cells measured and reported by the terminal exceeds the signal quality of the sub-cell currently accessed by the terminal and is maintained for a certain period of time, the base station switches the terminal to a new sub-cell. This ensures that the terminal is always in the sub-cell with the best signal quality for data services, which has a great benefit in ensuring the online and rate improvement of users at the edge of the cell.

[0129] The switching process is completed by re-sending the QCL-Info type D relationship of PDSCH and PDCCH to the terminal, so that the DMRS of PDSCH and the DMRS of PDCCH are co-located with the SSB or CSI-RS reference signal QCL type D of the newly measured sub-cell.

[0130] Optionally, in a feasible embodiment, step S80 includes: re-sending QCL-Info configuration information of PDSCH and PDCCH to the terminal; pairing the other sub-cells with the terminal through the QCL co-location relationship, and storing the mapping relationship between the other sub-cells and the terminal in the SSB of the other sub-cells.

[0131] The base station configures the QCL-Info type D relationship of PDSCH and PDCCH to the terminal, so that the DMRS of PDSCH and the DMRS of PDCCH are co-located with the SSB or CSI-RS reference signal QCL type D associated with the terminal. The base station is paired with the terminal through the QCL co-location relationship. The mapping relationship between the base station and the terminal is stored in the SSB context of the sub-cell.

[0132] In the technical solution of this embodiment, terminals between different scanning areas can be scheduled in the same PRB, reuse the same time-frequency resources, and do not interfere with each other. The entire cell can send the maximum number of baseband data streams supported by the base station, and a single cell can maximize the use of the baseband resource pool of the base station.

[0133] It should be noted that the above examples are only used to understand the present application and do not constitute a limitation on the cell resource configuration method of the present application. More simple transformations based on this technical concept are all within the protection scope of the present application.

[0134] This application also provides a cell resource configuration device, please refer to Fig.13 , the cell resource configuration device comprises:

[0135] A division module 10 is used to divide the coverage area of ​​a room expansion cell of the room expansion base station into at least two sub-cells, and the at least two sub-cells share the physical cell identity of the room expansion cell;

[0136] The first configuration module 20 is used to configure a channel state information reference signal CSI-RS resource set for the synchronization signal block SSB scanning area corresponding to each of the sub-cells, and the picosecond remote radio unit pRRU of each of the sub-cells broadcasts the corresponding CSI-RS reference signal and SSB signal;

[0137] The second configuration module 30 is used to configure physical random access channel PRACH resources for the SSB scanning area corresponding to each of the sub-cells.

[0138] Optionally, after the step of configuring PRACH resources for the SSB scanning area corresponding to each of the sub-cells, the method further includes:

[0139] Quasi co-location information QCL-Info configuration information is sent to the terminal, and the QCL-Info configuration information is used to define the co-location relationship between the demodulation reference signal DMRS corresponding to the physical downlink control channel PDCCH and the physical downlink shared channel PDSCH, and the SSB signal or CSI-RS reference signal.

[0140] Optionally, the method comprises:

[0141] Obtain channel state information reported by the terminal through the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH;

[0142] The sub-cell where the terminal's service is located is determined according to the reference signal resource indication CRI index and the SSB index of the channel state information.

[0143] Optionally, the method comprises:

[0144] Acquire CSI information of other sub-cells reported by the terminal, and determine signal quality of other sub-cells according to the CSI information of the other sub-cells;

[0145] When the signal quality of the other sub-cell exceeds the signal quality of the current sub-cell accessed by the terminal and is maintained for a preset time, the service of the terminal is switched to the other sub-cell.

[0146] Optionally, the step of switching the service of the terminal to another sub-cell includes:

[0147] Re-send the QCL-Info configuration information of PDSCH and PDCCH to the terminal;

[0148] The other sub-cells are paired with the terminals through the QCL co-location relationship, and the mapping relationship between the other sub-cells and the terminals is stored in the SSB of the other sub-cells.

[0149] Optionally, the step of configuring a CSI-RS resource set for the SSB scanning area corresponding to each of the sub-cells includes:

[0150] The number of non-zero power reference signal resources in the CSI-RS resource set is configured according to the number of antennas of the pRRU in the SSB scanning area corresponding to each of the sub-cells.

[0151] The cell resource configuration device provided by the present application adopts the cell resource configuration method in the above embodiment, which can solve the technical problem of baseband resource waste caused by uneven cell capacity. Compared with the prior art, the beneficial effects of the cell resource configuration device provided by the present application are the same as the beneficial effects of the cell resource configuration method provided by the above embodiment, and other technical features in the cell resource configuration device are the same as the features disclosed in the above embodiment method, which will not be repeated here.

[0152] The present application provides a cell resource configuration device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the cell resource configuration method in the above-mentioned embodiment 1.

[0153] Reference below Fig.14, which shows a schematic diagram of the structure of a cell resource configuration device suitable for implementing the embodiment of the present application. The cell resource configuration device in the embodiment of the present application may include but is not limited to mobile terminals such as mobile phones, laptop computers, digital broadcast receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Descriptions), PMPs (Portable Media Players), etc., and fixed terminals such as computers, etc. Fig.14 The cell resource configuration device shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0154] like Fig.14 As shown, the cell resource configuration device may include a processing device 1001 (e.g., a central processing unit, a graphics processor, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM: Read Only Memory) 1002 or a program loaded from a storage device 1003 to a random access memory (RAM: Random Access Memory) 1004. In RAM1004, various programs and data required for the operation of the cell resource configuration device are also stored. The processing device 1001, ROM1002, and RAM1004 are connected to each other through a bus 1005. An input / output (I / O) interface 1006 is also connected to the bus. Generally, the following systems can be connected to the I / O interface 1006: an input device 1007 including, for example, a touch screen, a touch pad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 1008 including, for example, a liquid crystal display (LCD: Liquid Crystal Display), a speaker, a vibrator, etc.; a storage device 1003 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 1009. The communication device 1009 may allow the cell resource configuration device to communicate wirelessly or wired with other devices to exchange data. Although the figure shows a cell resource configuration device with various systems, it should be understood that it is not required to implement or have all the systems shown. More or fewer systems may be implemented or have alternatively.

[0155] In particular, according to the embodiments disclosed in the present application, the process described above with reference to the flowchart can be implemented as a computer software program. For example, the embodiments disclosed in the present application include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network through a communication device, or installed from a storage device 1003, or installed from a ROM 1002. When the computer program is executed by the processing device 1001, the above-mentioned functions defined in the method of the embodiment disclosed in the present application are executed.

[0156] The cell resource configuration device provided by the present application adopts the cell resource configuration method in the above embodiment, which can solve the technical problem of baseband resource waste caused by uneven cell capacity. Compared with the prior art, the beneficial effects of the cell resource configuration device provided by the present application are the same as the beneficial effects of the cell resource configuration method provided by the above embodiment, and other technical features in the cell resource configuration device are the same as the features disclosed in the method of the previous embodiment, which will not be repeated here.

[0157] It should be understood that the various parts disclosed in this application can be implemented by hardware, software, firmware or a combination thereof. In the description of the above embodiments, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0158] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

[0159] The present application provides a computer-readable storage medium having computer-readable program instructions (ie, computer programs) stored thereon, and the computer-readable program instructions are used to execute the cell resource configuration method in the above-mentioned embodiment.

[0160] The computer-readable storage medium provided in the present application may be, for example, a USB flash drive, but is not limited to electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, systems or devices, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, system or device. The program code contained on the computer-readable storage medium may be transmitted using any appropriate medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination of the above.

[0161] The computer-readable storage medium may be included in the cell resource configuration device; or may exist independently without being assembled into the cell resource configuration device.

[0162] The above-mentioned computer-readable storage medium carries one or more programs. When the above-mentioned one or more programs are executed by the cell resource configuration device, the cell resource configuration device: distributes the baseband resource pool of the base station to the sub-cells formed by different SSB scanning areas, and pairs the terminal of each sub-cell with the sub-cell associated with it, so as to achieve the purpose of terminals in different sub-cells sharing the same baseband time and frequency resources without interfering with each other, realize spatial division multiplexing of baseband time and frequency resources, and improve the utilization rate of baseband resources.

[0163] Computer program code for performing the operations of the present application may be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0164] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present application. In this regard, each box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a sequence different from that marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flow chart, and the combination of the boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0165] The modules involved in the embodiments described in this application may be implemented by software or hardware, wherein the name of the module does not constitute a limitation on the unit itself in some cases.

[0166] The readable storage medium provided by the present application is a computer-readable storage medium, which stores computer-readable program instructions (i.e., computer programs) for executing the above-mentioned cell resource configuration method, and can solve the technical problem of baseband resource waste caused by uneven cell capacity. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided by the present application are the same as the beneficial effects of the cell resource configuration method provided by the above-mentioned embodiment, and will not be repeated here.

[0167] The present application also provides a computer program product, including a computer program, which implements the steps of the above-mentioned cell resource configuration method when executed by a processor.

[0168] The computer program product provided by the present application can solve the technical problem of baseband resource waste caused by uneven cell capacity. Compared with the prior art, the beneficial effects of the computer program product provided by the present application are the same as the beneficial effects of the cell resource configuration method provided by the above embodiment, which will not be repeated here.

[0169] The above descriptions are only some embodiments of the present application, and are not intended to limit the patent scope of the present application. All equivalent structural changes made using the contents of the present application specification and drawings under the technical concept of the present application, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A method for configuring cell resources, characterized in that: The method comprises: Divide the coverage area of ​​a room expansion cell of the room expansion base station into at least two sub-cells, wherein the at least two sub-cells share the physical cell identity of the room expansion cell; A channel state information reference signal CSI-RS resource set is configured for a synchronization signal block SSB scanning area corresponding to each of the sub-cells, and a picosecond remote radio unit pRRU of each of the sub-cells broadcasts a corresponding CSI-RS reference signal and SSB signal; Physical random access channel PRACH resources are configured for the SSB scanning area corresponding to each of the sub-cells.

2. The method according to claim 1, characterized in that After the step of configuring PRACH resources for the SSB scanning area corresponding to each of the sub-cells, the method further includes: Quasi co-location information QCL-Info configuration information is sent to the terminal, and the QCL-Info configuration information is used to define the co-location relationship between the demodulation reference signal DMRS corresponding to the physical downlink control channel PDCCH and the physical downlink shared channel PDSCH, and the SSB signal or CSI-RS reference signal.

3. The method according to claim 1, characterized in that The method comprises: Obtain channel state information reported by the terminal through the physical uplink control channel PUCCH or the physical uplink shared channel PUSCH; The sub-cell where the terminal's service is located is determined according to the reference signal resource indication CRI index and the SSB index of the channel state information.

4. The method according to claim 1, characterized in that The method comprises: Acquire CSI information of other sub-cells reported by the terminal, and determine signal quality of other sub-cells according to the CSI information of the other sub-cells; When the signal quality of the other sub-cell exceeds the signal quality of the current sub-cell accessed by the terminal and is maintained for a preset time, the service of the terminal is switched to the other sub-cell.

5. The method according to claim 4, characterized in that The step of switching the service of the terminal to another sub-cell includes: Re-send the QCL-Info configuration information of PDSCH and PDCCH to the terminal; The other sub-cells are paired with the terminals through the QCL co-location relationship, and the mapping relationship between the other sub-cells and the terminals is stored in the SSB of the other sub-cells.

6. The method according to claim 1, characterized in that The step of configuring a CSI-RS resource set for the SSB scanning area corresponding to each of the sub-cells comprises: The number of non-zero power reference signal resources in the CSI-RS resource set is configured according to the number of antennas of the pRRU in the SSB scanning area corresponding to each of the sub-cells.

7. A cell resource configuration device, characterized in that: The device comprises: A division module, used to divide the coverage area of ​​a room expansion cell of the room expansion base station into at least two sub-cells, wherein the at least two sub-cells share the physical cell identity of the room expansion cell; A first configuration module is used to configure a channel state information reference signal CSI-RS resource set for a synchronization signal block SSB scanning area corresponding to each of the sub-cells, and a picosecond remote radio unit pRRU of each of the sub-cells broadcasts a corresponding CSI-RS reference signal and SSB signal; The second configuration module is used to configure physical random access channel PRACH resources for the SSB scanning area corresponding to each of the sub-cells.

8. A cell resource configuration device, characterized in that: The device comprises: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program is configured to implement the steps of the cell resource configuration method according to any one of claims 1 to 6.

9. A storage medium, characterized in that: The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, the steps of the cell resource configuration method according to any one of claims 1 to 6 are implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the steps of the cell resource configuration method according to any one of claims 1 to 6 are implemented.

Images