BBU pooling processing method and device and BBU

Abstract

The present invention provides a BBU pooling processing method and apparatus, and a BBU, the BBU at least comprising a first baseband board and a second baseband board, the method comprising: adjusting a working BWP of a first cell covered by the first baseband board to a first BWP, and adjusting a working BWP of a second cell covered by the second baseband board to a second BWP; controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; controlling the first baseband board to be in an energy-saving mode; the embodiment of the invention provides a technical scheme of wireless base station pooling in a tidal scene aiming at a frame-type multi-board-card architecture BBU, combines technical means such as implementation of underlying hardware, user controlled cell switching and the like, realizes flexible multiplexing and sharing of processing resources among different baseband boards in a frame through more flexible pooling resource scheduling, and improves the resource utilization rate of the frame-type multi-board-card architecture BBU and the resource utilization rate of the frame-type multi-board-card architecture BBU. And therefore, a better cross-baseband board pooling energy-saving effect is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a BBU pooling processing method, device and BBU. Background Art

[0002] Mainstream mobile communication systems usually consist of two main parts: a baseband unit (BBU) and a remote radio unit (RRU) or an active antenna unit (AAU). The BBU is connected to the core network via the transmission network and to the RRU or AAU. Mainstream BBUs include two main architectures: a frame-type multi-board and a box-type single board.

[0003] Both of the above base station architectures are limited by the physical connection of optical fiber. Each RRU or AAU has a fixed interconnection correspondence with the specific optical interface of the BBU, which can only be changed by manually plugging and unplugging the cable. Among them, the macro station RRU / AAU and BBU are directly connected point-to-point or point-to-point after cascading, and need to correspond to a specific optical interface. Therefore, for 4G / 5G base stations deployed on a large scale in the existing network, the baseband processing board (or BBU single board) where the BBU optical interface is located completes the baseband signal processing function of the cell to which the RRU / AAU physically connected belongs.

[0004] The base station platform deployed in the existing network has reserved processing resources. The network construction is configured according to the peak demand of the deployment area and can meet the peak throughput of the planned number of cells.

[0005] In real-world scenarios, the baseband signal processing overhead has a tidal effect. The size of the processing overhead depends on the user activity and service traffic in the cell. When users use the cell intensively, a tidal effect of service volume peaks is generated, and when users leave the area in large numbers or reduce their activities at night, the service volume drops to a trough. During the trough period of the tidal effect, the processing resources required for the BBU deployed in the existing network are reduced according to the change in service volume.

[0006] With the rapid growth of mobile communication bandwidth demand, the performance of communication systems has been greatly improved, while the system energy consumption has continued to rise. Energy saving and consumption reduction has always been one of the focuses of the industry. Compared with RRU / AAU, the deployment location of baseband processing unit BBU is more centralized, the total amount of processing resources reserved is more significant, and it has the application foundation of pooling energy saving.

[0007] Faced with the tidal effect and other scenarios that exist in the existing network and change periodically over time, when valley traffic appears in multiple cells within the board at the same time and a single board can process the service data of the corresponding coverage areas of the original two or more baseband boards, technical means can be used to break through the baseband processing board of the baseband processing unit BBU, which is subject to the physical constraints of the one-to-one correspondence of the fronthaul (interface between BBU and RRU), to achieve pooling between boards, which can achieve energy saving and consumption reduction during valley periods, or be used for other business processing. Summary of the invention

[0008] The purpose of the embodiments of the present invention is to provide a BBU pooling processing method, device and BBU to support baseband processing resource pooling across baseband processing boards and solve the problem of short-term network interruption during cross-board pooling.

[0009] An embodiment of the present invention provides a pooling processing method of a baseband processing unit BBU, wherein the BBU includes at least a first baseband board and a second baseband board, and the method includes:

[0010] Adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0011] Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0012] The first baseband board is controlled to be in energy-saving mode.

[0013] The first parameter of the first baseband board is the same as the first parameter of the second baseband board; wherein the first parameter includes:

[0014] Working frequency band bandwidth;

[0015] Subcarrier spacing;

[0016] Center frequency;

[0017] Uplink and downlink time slot ratio.

[0018] Wherein, after adjusting the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjusting the working BWP of the second cell covered by the second baseband board to the second BWP, the method further includes:

[0019] Adjusting the working BWP of all terminals within the coverage area of ​​the first cell to the frequency band range of the first BWP, and adjusting all channels between all terminals and BBUs within the coverage area of ​​the first cell to operate within the frequency band range of the first BWP;

[0020] The working BWP of all terminals within the coverage area of ​​the second cell is adjusted to work within the frequency band range of the second BWP, and all channels between all terminals and the BBU within the coverage area of ​​the second cell are adjusted to work within the frequency band range of the second BWP.

[0021] The step of adjusting the working BWP of all terminals within the coverage area of ​​the first cell to a frequency band range of the first BWP includes:

[0022] Querying BWP capability information supported by terminals within the coverage area of ​​the first cell;

[0023] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the first BWP;

[0024] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the first BWP.

[0025] The step of adjusting the working BWP of all terminals within the coverage area of ​​the second cell to a frequency band range of the second BWP includes:

[0026] Querying BWP capability information supported by the terminal within the coverage area of ​​the second cell;

[0027] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0028] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0029] Before controlling all terminals in the first cell covered by the first baseband board to migrate to the second cell and / or other cells covered by the second baseband board, the method further includes:

[0030] Through the target configuration, the second baseband board receives the corresponding uplink data under the symbol synchronization of the second BWP forwarded by the first baseband board, and completes the coverage of the cell covered by the second baseband board within the coverage area of ​​the first baseband board.

[0031] The target configuration enables the second baseband board to receive uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board, including:

[0032] Setting the first baseband board to transfer the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0033] The first baseband board is configured to clear the data of the first BWP and the uplink data other than the second BWP.

[0034] Wherein, the method further comprises:

[0035] Through the target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device.

[0036] Among them, through the target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device, including:

[0037] forwarding downlink data in a second BWP corresponding to a second cell covered by the second baseband board to the first baseband board;

[0038] Setting the first baseband board to use the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0039] The first baseband board is configured to clear the data in the first BWP target frequency band and the downlink data outside the second BWP target frequency band.

[0040] Among them, controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes:

[0041] Performing digital gain adjustment on the amplitude of all data in the first cell, and gradually reducing the transmission power of the first cell at a predetermined speed;

[0042] Because the transmit power of the first cell is reduced, all activated terminals in the first cell actively switch from the first cell to the second cell and / or other cells;

[0043] After all terminals in the first cell switch to the second cell and / or other cells, all sent data in the first cell are adjusted to 0.

[0044] Among them, controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes:

[0045] The idle terminal in the first cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0046] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the first cell to switch to the second cell and / or other cells.

[0047] Among them, controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes:

[0048] The activated terminal in the first cell receives a measurement control signaling sent by the network, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0049] enabling a terminal in the first cell to perform frequency measurement according to the measurement control signaling, and reporting the measurement result to a network when the measurement result meets the handover event triggering threshold;

[0050] Receive handover commands sent in batches to the terminal after the network makes a handover decision according to the measurement result, and handover the terminal in the first cell to the second cell and / or other cells according to the handover command.

[0051] The activated terminal receives the measurement control signaling sent by the network, including:

[0052] The terminal receives the measurement control signaling sent by the network at a preset time interval; wherein the network sends the measurement control signaling to different terminal groups at different preset time intervals.

[0053] The step of controlling the first baseband board to be in energy-saving mode includes at least one of the following:

[0054] Setting the processing chip in the first baseband board to a power-off state, a reset state or other low-power consumption state; the processing chip includes: a processor chip required for baseband processing;

[0055] Setting the peripheral circuits of the processing chip to a power-off state, a reset state or other low-power consumption state;

[0056] Setting the chip related to the board control logic function in the first baseband board to be in a controllable state, but maintaining its working state without generating or reducing signal changes;

[0057] The first baseband board in energy-saving mode is set to retain the function of exchanging data with the backplane, and the exchange unit between the backplanes is in a normal working state;

[0058] Setting the hardware required for the fronthaul interface function of the first baseband board in the energy-saving mode to be in working state;

[0059] Setting the auxiliary circuit of the hardware or unit in working state to be in normal working state;

[0060] Setting the state adjustment of related processing resources can be realized by the BBU main control processing unit through commands;

[0061] The BBU main control processing unit can set and restore the power-off state or reset state or other low-power consumption state of the relevant processing chip through the board control logic to adjust the state of the relevant processing resources.

[0062] The switching unit between the backplanes is set to be in a normal working state, including:

[0063] In the switching unit, the processing path necessary for exchanging data with the second baseband board and the fronthaul interface is set to work normally, and the remaining redundant capabilities are in a power-off state or a reset state or other low-power consumption state.

[0064] Wherein, the method further comprises:

[0065] Adjust the frequency band size of the second BWP according to the existing network traffic to meet the service needs of terminals in the first cell coverage area and the service needs of terminals in the second cell coverage area;

[0066] and / or,

[0067] The working BWP of the terminal within the coverage area of ​​the first cell is adjusted according to the frequency band size of the second BWP.

[0068] Wherein, the method further comprises:

[0069] Controlling the hardware that is powered off, in sleep mode or in other low-power consumption state when the first baseband board is working in pooling mode to be in normal operation mode;

[0070] Adjusting the BWP of the second cell in the coverage area during the second baseband board pooling period to the target frequency band of the second BWP; the target frequency band of the second BWP is different from the target frequency band corresponding to the first BWP;

[0071] A first cell is established on the first baseband board, and the operating bandwidth of the first cell is set to a target frequency band of the first BWP, which is different from the target frequency band of the second BWP; wherein the target frequency band of the first BWP and the target frequency band of the second BWP are non-overlapping continuous frequency bands, and the frequency band range is within the complete operating bandwidth range of the first baseband board and the second baseband board.

[0072] The working frequency bands of all air interface channels in the first cell are limited to the target frequency band range corresponding to the first cell, and the working frequency bands of all air interface channels in the second cell are limited to the target frequency band range corresponding to the second cell;

[0073] The relevant parameters of the first cell remain in the same parameter settings as in the pooled state, and the relevant parameters of the second cell remain in the same parameter settings as in the pooled state;

[0074] All terminals in the second cell within the coverage area of ​​the second baseband board during pooling that can use the air interface signal of the first cell are migrated to the first cell on the first baseband board.

[0075] Wherein, the method further comprises:

[0076] Through the target configuration, the second baseband board continues to receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated.

[0077] The target configuration is used to enable the second baseband board to continuously receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated, including:

[0078] The first baseband board is set to continuously forward the data corresponding to the second cell received from the fronthaul interface to the second baseband board for processing, and the forwarded data is adjusted to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0079] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the uplink data outside the target frequency band of the second BWP with 0.

[0080] Wherein, the method further comprises:

[0081] Through the target configuration, the first baseband board forwards the corresponding downlink data under the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated.

[0082] The method of enabling the first baseband board to continuously forward the corresponding downlink data of the second baseband board under symbol synchronization to the subsequent device through target configuration until the pooling is terminated includes:

[0083] Continuously forwarding the downlink data corresponding to the second cell covered by the second baseband board to the first baseband board, and adjusting the forwarded data to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0084] The first baseband board is set to use the data in the target frequency band of the second BWP generated by the second baseband board processed by the second baseband board to replace the data in the target frequency band of the second BWP in the first baseband board.

[0085] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the downlink data outside the target frequency band of the second BWP with 0.

[0086] Before adjusting the BWP of the second cell in the coverage area during the second baseband board pooling to the target frequency band of the second BWP, the method further includes:

[0087] The working BWP of all terminals in the coverage area during the second baseband board pooling period is adjusted to the frequency band range supported by the terminal.

[0088] The step of adjusting the working BWP of all terminals in the coverage area during the second baseband board pooling period to a frequency band range supported by the terminal includes:

[0089] Query the BWP capability information supported by the terminal;

[0090] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0091] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0092] Among them, controlling the hardware that is powered off or in sleep or other low-power consumption state when the first baseband board pooling works to be in normal operation mode includes:

[0093] Controlling the powered-off or dormant chip on the first baseband board to restart;

[0094] Controlling the data path of all service data of the second cell sent by the second baseband board to remain unchanged, and forwarding the data path of all service data of the second cell from the fronthaul interface to the second baseband board via the first baseband board to remain unchanged, waiting for the control command of closing the network pooling;

[0095] After the chip on the first baseband board that is powered off or in sleep mode is restarted, the chip in the first baseband board is responsible for filling the data in the BWP other than the second BWP where the second cell is located with 0.

[0096] Among them, migrating all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling to the first cell on the first baseband board includes:

[0097] The activated terminal in the second cell receives a configuration signaling sent by the network, where the configuration signaling is used to temporarily configure the first cell to have a higher priority than the second cell;

[0098] The activated terminal in the second cell receives a first signaling sent by the network, where the first signaling is used to configure a switching threshold so that the terminal performs cell switching according to the first signaling and the configuration signaling;

[0099] The network suspends new access or switching of terminals into the second cell according to the number of available terminals in the first cell camped in the second cell in the measurement result, until all available terminals in the first cell are switched to the first cell;

[0100] The original thresholds or offset parameters of the terminal are restored to a normal operating state, normal access to each cell is restored, and the bandwidth of the first cell and the bandwidth of the second cell are restored to the bandwidth under normal network operation.

[0101] Among them, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, stopping the second baseband board from receiving the uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board through target configuration, including:

[0102] Stop the first baseband board from transferring the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0103] Stop the first baseband board to clear the data of the first BWP and the data other than the second BWP;

[0104] The first baseband board is configured to receive the first cell data transmitted from the fronthaul interface, and the first baseband board is responsible for processing.

[0105] Among them, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, through target configuration, stop the first baseband board from forwarding the corresponding downlink data under the symbol synchronization of the second BWP of the second baseband board to the subsequent device, and the first baseband board itself completes the first cell processing task, including:

[0106] Stop forwarding the downlink data in the second BWP corresponding to the second cell covered by the second baseband board to the first baseband board;

[0107] Stop the first baseband board from using the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0108] The first baseband board is configured to process the first cell data and send the data to the subsequent device via the front transmission interface.

[0109] Among them, migrating all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling to the first cell on the first baseband board includes:

[0110] The idle terminal in the second cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0111] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the second cell to switch to the first cell.

[0112] Among them, migrating all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling to the first cell on the first baseband board includes:

[0113] The activated terminal in the second cell receives a measurement control signaling sent by the network at a preset time interval, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0114] enabling the terminals in the second cell to perform batch frequency measurement according to the measurement control signaling, and reporting the measurement results to the network in batches when the measurement results meet the handover event triggering threshold;

[0115] Receive a switching command sent by the network after making a switching decision based on the measurement result, and switch the terminals in the second cell to the first cell in batches according to the switching command.

[0116] The embodiment of the present invention further provides a pooling processing device of a baseband processing unit BBU, wherein the BBU includes at least a first baseband board and a second baseband board, and the device includes:

[0117] A first adjustment module is used to adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to a non-overlapping continuous frequency band, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0118] A migration module, used to control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0119] The first control module is used to control the first baseband board to be in energy-saving mode.

[0120] An embodiment of the present invention further provides a baseband processing unit BBU, including a processor and a transceiver, wherein the transceiver receives and sends data under the control of the processor, and the BBU includes at least a first baseband board and a second baseband board, and the processor is used to perform the following operations:

[0121] Adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0122] Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0123] The first baseband board is controlled to be in energy-saving mode.

[0124] An embodiment of the present invention further provides a baseband processing unit BBU, comprising a memory, a processor, and a program stored in the memory and executable on the processor, wherein the processor implements the above-mentioned BBU pooling processing method when executing the program.

[0125] An embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps in the BBU pooling processing method described above are implemented.

[0126] The above technical solution of the present invention has at least the following beneficial effects:

[0127] In the pooling processing method, device and BBU of the BBU in the embodiment of the present invention, a technical solution for wireless base station pooling in a tidal scenario is proposed for the frame-type multi-board architecture BBU. The embodiment of the present invention combines the implementation of the underlying hardware, user-controlled cell switching and other technical means, and realizes flexible reuse and sharing of processing resources between different baseband boards in the frame through more flexible pooling resource scheduling, thereby achieving a better cross-baseband board pooling energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0128] Figure 1 A flowchart showing the steps of a BBU pooling processing method provided by an embodiment of the present invention;

[0129] Figure 2 A schematic diagram showing the architecture of a frame-type multi-board base station provided in an embodiment of the present invention;

[0130] Figure 3 An example diagram showing steps of a BBU pooling processing method provided by an embodiment of the present invention;

[0131] Figure 4 One of the schematic diagrams showing the principles of an example provided by an embodiment of the present invention;

[0132] Figure 5 A second schematic diagram showing an example of a principle provided by an embodiment of the present invention;

[0133] Figure 6 A schematic diagram showing the structure of a BBU pooling processing device provided in an embodiment of the present invention;

[0134] Figure 7 A schematic diagram showing the structure of a BBU provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0135] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0136] like Figure 1 As shown, an embodiment of the present invention further provides a pooling processing method of a baseband processing unit BBU, wherein the BBU includes at least a first baseband board and a second baseband board, and the method includes:

[0137] Step 101, adjusting the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjusting the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0138] Optionally, the number of first cells covered by the first baseband board may be one or more; the number of second cells covered by the second baseband board may be one or more, which is not specifically limited here.

[0139] Step 102: Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0140] Step 103: Control the first baseband board to be in energy-saving mode.

[0141] As an optional embodiment, the BBU pooling processing method provided by the present invention is a technical solution for wireless base station pooling in tidal scenarios proposed for frame-type multi-card architecture BBU; Figure 2 The figure shows the architecture diagram of a frame-type multi-board base station.

[0142] In the embodiment of the present invention, BBU pooling is used to pool the resources of the baseband processing board. Limited by the physical connection relationship between the forwarding interface on the baseband processing board and the RRU, it is necessary to have a forwarding data path with sufficient bandwidth between the baseband boards and support direct data transmission with the forwarding interface. The embodiment of the present invention needs to be based on hardware with this path. The specific hardware implementation is as follows:

[0143] 1. Inter-board interconnection

[0144] 1. The baseband board uses the switching chip through the backplane to achieve star-shaped high-speed data interconnection between baseband boards.

[0145] 2. The baseband board is interconnected with the main control board switching chip through the backplane through the switching chip, and further supports data forwarding to other baseband boards.

[0146] 2.Internal Interconnection

[0147] 1. The baseband board backplane data is interconnected with the processing chip and the fronthaul interface through the switching chip.

[0148] 2. The physical path of normal business data design within the board can be sent by the processing chip to the fronthaul interface, or directly forwarded to the fronthaul interface by the switching chip.

[0149] 3. High-precision synchronization between AAU / RRU

[0150] The AAU / RRU connected to the pooled coverage area, if covering adjacent areas, can achieve the best effect by using a synchronization deviation within +-65ns. The embodiment of the present invention recommends but is not limited to CPRI (Common Public Radio Interface) to achieve high-precision synchronization based on an internal synchronization mechanism, and can use but is not limited to eCPRI combined with 1588V2 clock and SYNCE (Synchronous Ethernet) to achieve a high-precision synchronization solution.

[0151] 4. The baseband processing chip operation status is controllable, supporting one of the following methods:

[0152] 1. Support the reset and release function (or sleep and release function) of the baseband processing chip through the board control logic control, and ensure that the status of each pin is normal during the process, and no abnormal impact is generated on other functional units;

[0153] 2. Support the power-on and power-off functions of the baseband processing chip through the board control logic control, and ensure that the status of each pin is normal during the process, and no abnormal impact is generated on other functional units;

[0154] 3. Support the control through the board control logic to set the baseband processing chip to a low power consumption state, and ensure that the status of each pin is normal during the process, and no abnormal impact is caused on other functional units.

[0155] As an optional embodiment, the first parameter of the first baseband board is the same as the first parameter of the second baseband board; wherein the first parameter includes:

[0156] Working frequency band bandwidth;

[0157] Subcarrier spacing;

[0158] Center frequency;

[0159] Uplink and downlink time slot ratio.

[0160] like Figure 3 As shown, in at least one embodiment of the present invention, after step 101, the method further includes:

[0161] Step 11, adjusting the working BWP of all terminals within the coverage area of ​​the first cell to the frequency band range of the first BWP, and adjusting all channels between all terminals and BBUs within the coverage area of ​​the first cell to work within the frequency band range of the first BWP;

[0162] Step 12: adjust the working BWP of all terminals within the coverage area of ​​the second cell to operate within the frequency band range of the second BWP, and adjust all channels between all terminals and BBU within the coverage area of ​​the second cell to operate within the frequency band range of the second BWP.

[0163] Optionally, adjusting the working BWP of all terminals within the coverage area of ​​the first cell to a frequency band range of the first BWP includes:

[0164] Querying BWP capability information supported by terminals within the coverage area of ​​the first cell;

[0165] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the first BWP;

[0166] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the first BWP.

[0167] Optionally, adjusting the working BWP of all terminals within the coverage area of ​​the second cell to a frequency band range of the second BWP includes:

[0168] Querying BWP capability information supported by the terminal within the coverage area of ​​the second cell;

[0169] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0170] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0171] As an optional embodiment, the second BWP and the first BWP belong to different continuous frequency bands; optionally, the second BWP preferentially uses a lower frequency band.

[0172] like Figure 3 As shown, in at least one embodiment of the present invention, before step 102, the method further includes:

[0173] Step 13, through target configuration, the second baseband board receives the corresponding uplink data under symbol synchronization of the second BWP forwarded by the first baseband board, and completes the coverage of the cell covered by the second baseband board within the coverage area of ​​the first baseband board.

[0174] Among them, "symbol synchronization" can be understood as follows: in the same time slot, after the nth symbol of the second BWP is written into the storage space on time, it can be read out from the memory by the BBU in the same time range (the read time window corresponding to the symbol) as the nth symbol of the first BWP for subsequent processing and sending to the RRU.

[0175] Optionally, the target configuration is used to enable the second baseband board to receive uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board, including:

[0176] Setting the first baseband board to transfer the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0177] The first baseband board is configured to clear the data of the first BWP and the uplink data other than the second BWP.

[0178] like Figure 3 As shown, as an optional embodiment of the present invention, the method further includes:

[0179] Step 14: through target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device.

[0180] In one implementation, step 13 and step 14 need to be completed synchronously, that is, the switching of uplink data and downlink data is started in the same time slot.

[0181] Optionally, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to a subsequent device (such as an RRU / AAU) through target configuration, including:

[0182] forwarding downlink data in a second BWP corresponding to a second cell covered by the second baseband board to the first baseband board;

[0183] Setting the first baseband board to use the downlink data in the second BWP generated by the second baseband board to replace the downlink data of the second BWP in the first baseband board;

[0184] The first baseband board is configured to clear the data in the first BWP target frequency band and the downlink data outside the second BWP target frequency band.

[0185] In an optional embodiment of the present invention, step 102 includes:

[0186] Performing digital gain adjustment on the amplitude of all data in the first cell, and gradually reducing the transmission power of the first cell at a predetermined speed;

[0187] Because the transmit power of the first cell is reduced, all activated terminals in the first cell actively switch from the first cell to the second cell and / or other cells;

[0188] After all terminals in the first cell switch to the second cell and / or other cells, all sent data in the first cell are adjusted to 0.

[0189] In another optional embodiment of the present invention, step 102 includes:

[0190] The idle terminal in the first cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0191] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the first cell to switch to the second cell and / or other cells.

[0192] In yet another optional embodiment of the present invention, step 102 includes:

[0193] The activated terminal in the first cell receives a measurement control signaling sent by the network, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0194] enabling a terminal in the first cell to perform frequency measurement according to the measurement control signaling, and reporting the measurement result to a network when the measurement result meets the handover event triggering threshold;

[0195] Receive handover commands sent in batches to the terminal after the network makes a handover decision according to the measurement result, and handover the terminal in the first cell to the second cell and / or other cells according to the handover command.

[0196] Optionally, the activated terminal receiving measurement control signaling sent by the network includes:

[0197] The terminal receives the measurement control signaling sent by the network at a preset time interval, wherein the network sends the measurement control signaling to different terminal groups at different preset time intervals. For example, the network sends the measurement control signaling to 50 terminals per second.

[0198] In at least one embodiment of the present invention, step 103 includes at least one of the following:

[0199] Setting the processing chip in the first baseband board to a power-off state, a reset state or other low-power consumption state; the processing chip includes: a processor chip required for baseband processing;

[0200] Setting the peripheral circuits of the processing chip to a power-off state, a reset state or other low-power consumption state;

[0201] Setting the chip related to the board control logic function in the first baseband board to be in a controllable state, but maintaining its working state without generating or reducing signal changes;

[0202] The first baseband board in energy-saving mode is set to retain the function of exchanging data with the backplane, and the exchange unit between the backplanes is in a normal working state;

[0203] Setting the hardware required for the fronthaul interface function of the first baseband board in the energy-saving mode to be in working state;

[0204] Setting the auxiliary circuit of the hardware or unit in working state to be in normal working state;

[0205] Setting the state adjustment of related processing resources can be realized by the BBU main control processing unit through commands;

[0206] The BBU main control processing unit can set and restore the power-off state or reset state or other low-power consumption state of the relevant processing chip through the board control logic to adjust the state of the relevant processing resources.

[0207] It should be noted that the above settings do not need to be performed in the above order, and can be set in random order, or can be set synchronously, or can be set partially in different orders and partially in order, which is not specifically limited here.

[0208] Optionally, setting the switching unit between the backplanes to be in a normal working state includes:

[0209] In the switching unit, the processing path necessary for exchanging data with the second baseband board and the fronthaul interface is set to work normally, and the remaining redundant capabilities are in a power-off state or a reset state or other low-power consumption state.

[0210] In at least one embodiment of the present invention, the method further comprises:

[0211] The frequency band size of the second BWP is adjusted according to the existing network service volume to meet the service needs of the terminals in the first cell coverage area and the second cell coverage area; optionally, the frequency band size of the second BWP can be equal to the BWP of the second baseband board at most.

[0212] and / or,

[0213] According to the frequency band size of the second BWP, the frequency band position and / or bandwidth of the working BWP of the terminal in the coverage area of ​​the first cell is adjusted. Optionally, in the case of a small traffic volume, the working BWP of the terminal in the coverage area of ​​the first cell may remain unchanged.

[0214] Following the above example, the embodiment of the present invention further provides a BBU pooling shutdown process. In short, the BBU pooling shutdown process and the BBU pooling startup process can be called mutually inverse processes. Accordingly, the method further includes:

[0215] Control the hardware that is powered off or in sleep or other low-power state when the first baseband board pooling works to be in normal operation mode

[0216] Adjusting the BWP of the second cell in the coverage area during the second baseband board pooling period to the target frequency band of the second BWP; the target frequency band of the second BWP is different from the target frequency band corresponding to the first BWP;

[0217] A first cell is established on the first baseband board, and the working bandwidth of the first cell is set to a target frequency band of the first BWP, which is different from the target frequency band of the second BWP; wherein the target frequency band of the first BWP and the target frequency band of the second BWP are non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0218] The working frequency bands of all air interface channels in the first cell are limited to the target frequency band range corresponding to the first cell, and the working frequency bands of all air interface channels in the second cell are limited to the target frequency band range corresponding to the second cell;

[0219] The relevant parameters of the first cell remain in the same parameter settings as in the pooled state, and the relevant parameters of the second cell remain in the same parameter settings as in the pooled state;

[0220] All terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during the pooling period are migrated to the first cell on the first baseband board. Optionally, terminals that can use the air interface signal of other cells, except the terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during the pooling period, are migrated to other cells;

[0221] The pooling function is turned off, and the first baseband board and the second baseband board resume normal operation.

[0222] As an optional embodiment, the method further includes:

[0223] Through the target configuration, the second baseband board continues to receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated.

[0224] In one implementation, the target configuration is used to enable the second baseband board to continuously receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated, including:

[0225] The first baseband board is set to continuously forward the data corresponding to the second cell received from the fronthaul interface to the second baseband board for processing, and the forwarded data is adjusted to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0226] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the uplink data outside the target frequency band of the second BWP with 0.

[0227] As another optional embodiment, the method further includes:

[0228] Through the target configuration, the first baseband board forwards the corresponding downlink data under the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated.

[0229] In one implementation, the first baseband board continuously forwards the corresponding downlink data of the second baseband board under symbol synchronization to the subsequent device through target configuration until the pooling is terminated, including:

[0230] Continuously forwarding the downlink data corresponding to the second cell covered by the second baseband board to the first baseband board, and adjusting the forwarded data to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0231] The first baseband board is set to use the data in the target frequency band of the second BWP generated by the second baseband board processed by the second baseband board to replace the data in the target frequency band of the second BWP in the first baseband board.

[0232] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the downlink data outside the target frequency band of the second BWP with 0.

[0233] As an optional embodiment, before adjusting the BWP of the second cell in the coverage area during the second baseband board pooling to the target frequency band of the second BWP, the method further includes:

[0234] The working BWP of all terminals in the coverage area during the second baseband board pooling period is adjusted to the frequency band range supported by the terminal.

[0235] The step of adjusting the working BWP of all terminals in the coverage area during the second baseband board pooling period to a frequency band range supported by the terminal includes:

[0236] Query the BWP capability information supported by the terminal;

[0237] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0238] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0239] Optionally, controlling the hardware that is powered off or in a sleep or other low-power consumption state when the first baseband board pooling works to be in a normal operation mode includes:

[0240] Controlling the powered-off or dormant chip on the first baseband board to restart;

[0241] Controlling the data path of all service data of the second cell sent by the second baseband board to remain unchanged, and forwarding the data path of all service data of the second cell from the fronthaul interface to the second baseband board via the first baseband board to remain unchanged, waiting for the control command of closing the network pooling;

[0242] After the chip on the first baseband board that is powered off or in sleep mode is restarted, the chip in the first baseband board is responsible for filling the data in the BWP other than the second BWP where the second cell is located with 0.

[0243] As an optional embodiment, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the first cell bandwidth and the second cell bandwidth to the bandwidth under normal network operation, the method further includes:

[0244] Through the target configuration, the second baseband board is stopped from receiving the uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board.

[0245] Optionally, stopping the second baseband board from receiving uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board through target configuration includes:

[0246] Stop the first baseband board from transferring the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0247] Stop the first baseband board to clear the data of the first BWP and the data other than the second BWP;

[0248] The first baseband board is configured to receive the first cell data transmitted from the fronthaul interface, and the first baseband board is responsible for processing.

[0249] Optionally, the method further comprises:

[0250] Through the target configuration, the second baseband board continues to receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated.

[0251] In one implementation, the target configuration is used to enable the second baseband board to continuously receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated, including:

[0252] The first baseband board is set to continuously forward the data corresponding to the second cell received from the fronthaul interface to the second baseband board for processing, and the forwarded data is adjusted to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0253] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the uplink data outside the target frequency band of the second BWP with 0.

[0254] As another optional embodiment, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the first cell bandwidth and the second cell bandwidth to the bandwidth under normal network operation, the method further includes:

[0255] Through the target configuration, the first baseband board is stopped from forwarding the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device, and the first baseband board itself completes the first cell processing task.

[0256] Optionally, by target configuration, the first baseband board is stopped from forwarding the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device, and the first baseband board itself completes the first cell processing task, including:

[0257] Stop forwarding the downlink data in the second BWP corresponding to the second cell covered by the second baseband board to the first baseband board;

[0258] Stop the first baseband board from using the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0259] The first baseband board is configured to process the first cell data and send the data to the subsequent device via the front transmission interface.

[0260] Optionally, the method further comprises:

[0261] Through the target configuration, the first baseband board forwards the corresponding downlink data under the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated.

[0262] In one implementation, the first baseband board continuously forwards the corresponding downlink data of the second baseband board under symbol synchronization to the subsequent device through target configuration until the pooling is terminated, including:

[0263] Continuously forwarding the downlink data corresponding to the second cell covered by the second baseband board to the first baseband board, and adjusting the forwarded data to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0264] The first baseband board is set to use the data in the target frequency band of the second BWP generated by the second baseband board processed by the second baseband board to replace the data in the target frequency band of the second BWP in the first baseband board.

[0265] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the downlink data outside the target frequency band of the second BWP with 0.

[0266] For example, RRC completes the corresponding update of BWP parameters of all UEs and configures all UEs in the second cell, such as setting the starting PRB position of the second BWP corresponding to each UE; setting the number of consecutive RBs of the second BWP corresponding to each UE; setting the related parameters of other BWPs of each UE to be consistent with the current parameters (the current parameters can be understood as the parameters in the pooling state).

[0267] It should be noted that when a terminal applies for access in the coverage area of ​​the first cell, all terminals available in the first cell are controlled to access the first cell but not the second cell.

[0268] As an optional embodiment, migrating all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling to the first cell on the first baseband board includes:

[0269] The activated terminal in the second cell receives a configuration signaling sent by the network, where the configuration signaling is used to temporarily configure the first cell to have a higher priority than the second cell;

[0270] The activated terminal in the second cell receives a first signaling sent by the network, where the first signaling is used to configure a switching threshold so that the terminal performs cell switching according to the first signaling and the configuration signaling;

[0271] The network suspends new access or switching of terminals into the second cell according to the number of available terminals in the first cell camped in the second cell in the measurement result, until all available terminals in the first cell are switched to the first cell;

[0272] The original thresholds or offset parameters of the terminal are restored to a normal operating state, normal access to each cell is restored, and the bandwidth of the first cell and the bandwidth of the second cell are restored to the bandwidth under normal network operation.

[0273] As an optional embodiment, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, the second baseband board is stopped from receiving the uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board through target configuration, including:

[0274] Stop the first baseband board from transferring the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0275] Stop the first baseband board to clear the data of the first BWP and the data other than the second BWP;

[0276] The first baseband board is configured to receive the first cell data transmitted from the fronthaul interface, and the first baseband board is responsible for processing according to the normal business process.

[0277] As another optional embodiment, before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, through target configuration, stop the first baseband board from forwarding the corresponding downlink data under the symbol synchronization of the second BWP of the second baseband board to the subsequent device, and complete the first cell processing task by the first baseband board itself, including:

[0278] Stop forwarding the downlink data in the second BWP corresponding to the second cell covered by the second baseband board to the first baseband board;

[0279] Stop the first baseband board from using the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0280] The first baseband board is configured to process the first cell data and send the data to the subsequent device via the fronthaul interface according to the conventional process.

[0281] In an optional embodiment of the present invention, all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling are migrated to the first cell on the first baseband board, including:

[0282] The idle terminal in the second cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0283] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the second cell to switch to the first cell.

[0284] In another optional embodiment of the present invention, all terminals that can use the air interface signal of the first cell in the second cell within the coverage area of ​​the second baseband board during pooling are migrated to the first cell on the first baseband board, including:

[0285] The activated terminal in the second cell receives a measurement control signaling sent by the network at a preset time interval, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0286] enabling the terminals in the second cell to perform batch frequency measurement according to the measurement control signaling, and reporting the measurement results to the network in batches when the measurement results meet the handover event triggering threshold;

[0287] Receive a switching command sent by the network after making a switching decision based on the measurement result, and switch the terminals in the second cell to the first cell in batches according to the switching command.

[0288] In summary, the embodiment of the present invention proposes a technical solution for pooling of wireless base stations in tidal scenarios for a frame-type multi-board architecture BBU. The embodiment of the present invention combines the implementation of the underlying hardware, user-controlled cell switching and other technical means, and realizes flexible reuse and sharing of processing resources between different baseband processing boards in the frame through more flexible pooled resource scheduling, thereby achieving a better cross-baseband board pooling energy saving effect. The embodiment of the present invention provides the hardware architecture standard and technical implementation method of each single board in the frame-type architecture BBU, without the need to add additional hardware units, and thus does not increase costs. At the same time, without adding additional hardware units, the increase in the probability of system failure is also avoided, and the hardware MTBF (Mean Time Between Failure) indicator will not deteriorate due to the failure points caused by the newly added hardware equipment, thereby ensuring that the high reliability of commercial base stations is maintained after pooling. The user is not aware of the pooling scheduling process in the embodiment of the present invention, which can ensure that pooling scheduling is realized under the condition of uninterrupted business, and the baseband processing unit resources are fully utilized, thereby achieving energy saving and consumption reduction of the baseband processing unit of the base station.

[0289] The embodiment of the present invention proposes a pooling method and implementation of a baseband processing unit BBU of a wireless communication base station. Under the tidal effect, the service processing volume of the baseband processing unit during the trough period is reduced, resulting in a processing resource demand that is less than half of the demand during the peak period, and may even reach less than one-tenth. The embodiment of the present invention can support the sharing of processing resources between multiple baseband processing boards of the BBU to form a baseband processing resource pool. Compared with the existing solution of reserving full resources and scheduling only within one baseband board or one single-board solution BBU, the embodiment of the present invention has a wider range of flexible pooling and significantly improved energy saving effects. The embodiment of the present invention releases the reserved computing power of the BBU or baseband processing board when the service volume is lower than the pooling threshold, allowing part of the hardware to enter a sleep or low-power state, thereby achieving a more significant energy saving effect than previous solutions, and through innovative methods, it can also ensure that cell services are not interrupted in areas without overlapping coverage.

[0290] In order to more clearly describe the BBU pooling method provided by the embodiment of the present invention, the following is combined with an example and Figure 4 and Figure 5 Describe in detail.

[0291] like Figure 4The figure shows a schematic diagram of a frame-type multi-board architecture in the initial state of pooling. Some of the conventions are explained as follows:

[0292] a) Assume that the pooled power-saving baseband board A is in the non-pooled state, the cell ID of the coverage area is ID0, and the pooled state ID0 cell is closed.

[0293] b) Assume that the target baseband board B of the pooled service migration is in a non-pooled state, the cell ID of the coverage area is ID1, and the pooled state ID1 cell operates normally.

[0294] c) In the non-pooling stage, the BWP for normal operation of the ID0 cell is BWP0, and the UE in the coverage area is UEx.

[0295] d) Before pooling is closed, when the BWP of the ID0 cell is BWP0, the BWP corresponding to UEx is BWP0x, and BWP0x is a subset of BWP0.

[0296] e) During the pooling process, when the BWP of the ID0 cell adopts a certain proportion of the continuous bandwidth of BWP0, the BWP of the ID0 cell is BWP0-off.

[0297] f) During the pooling process, when the BWP of the ID0 cell is BWP0-off, the BWP corresponding to UEx is BWP0-offx, and BWP0-offx is a subset of BWP0-off.

[0298] g) During the pooling process, when the BWP of the ID0 cell migrates to BWP1-on, UEx is correspondingly adjusted to the new working BWP BWP1-onx, and BWP1-onx is a subset of BWP1-on.

[0299] h) In the non-pooling stage, the BWP for normal operation of the ID1 cell is BWP1, and the UE in the coverage area is UEy.

[0300] i) During the pooling process, when the BWP of the ID1 cell is BWP1, the BWP corresponding to UEy is BWP1y, and BWP1y is a subset of BWP1.

[0301] j) During the pooling process, when the BWP of the cell ID1 adopts a certain proportion of the continuous bandwidth of BWP1, the BWP of the cell ID1 is BWP1-on.

[0302] k) During the pooling process, when the BWP of the ID1 cell is BWP1-on, the BWP corresponding to UEy is BWP1-ony, and BWP1-ony is a subset of BWP1-on.

[0303] l) During the pooling process, when the working BWP of UEx is changed to a subset of BWP1-on, its corresponding working BWP is BWP1-onx.

[0304] m) During the pooling process, when the working BWP of UEx is changed to a subset of BWP1-off, its corresponding working BWP is BWP1-offx.

[0305] n) During the pooling process, when the working BWP of UEx and UEy is changed to BWP1, their corresponding working BWPs are BWP1x and BWP1y.

[0306] This example targets the requirements of the existing macro site scenario, and takes the example that the pooled closed baseband board and the pooled target baseband board each support one 100M frequency band NR cell (that is, BWP0=BWP1, which is the same 100M frequency band range).

[0307] like Figure 5 As shown, the pooling startup process is as follows:

[0308] 1. Set and adjust the BWP of the cells in the area covered by the baseband board A for pre-pooling power reduction, and adjust the BWP of the ID0 cell from BWP to BWP0-off. In this example, BWP0-off is 40% higher than BWP0 (this is the recommended range, and it can occupy either high or low frequency bands. This example requires that the BWP range set for the cell to be closed and the target cell to be migrated be divided into different continuous frequency bands. The percentage is only an example and is not limited. This example supports adjusting the proportion range according to the actual scenario business volume).

[0309] 2. Set and adjust the working BWP of all UEx to the frequency band range BWP0-offx that UEx can support within the BWP0-off frequency band. The BWP0-offx corresponding to each UE is a BWP0-off subset, which is determined by the hardware capability of UEx and is the channel bandwidth that it can support within the frequency band. The specific steps include:

[0310] a) Query all UEx supported BWP capability information;

[0311] b) Determine the position and bandwidth of BWP0-offx of UEx in BWP0-off according to the query result and RRC policy;

[0312] c) RRC completes the corresponding update of all UEx BWP parameters and configures all UEx in the ID0 cell;

[0313] i. Set the starting PRB position of BWP0-offx;

[0314] ii. Set the number of consecutive RBs for BWP0-offx;

[0315] iii. Set other BWP0-off related parameters of UEx to keep them consistent with the original parameters;

[0316] iv. Complete the corresponding settings for UEx and working BWP0-offx in all ID0 cells;

[0317] d) All UEs in the ID0 cell operate in the BWP0-off frequency band;

[0318] 3. Set and adjust the BWP of the ID1 cell in the area covered by the target baseband board B for pooled service migration to BWP1-on. BWP1-on is 40% lower than the original channel bandwidth BWP1, satisfying the requirement that there is no frequency overlap between BWP1-on and BWP1-off (this is the recommended range, and it can occupy either high or low frequency bands. This example requires ensuring that the BWP range set for the cell to be closed and the target cell to be migrated is divided into different continuous frequency bands. The percentage is only an example. This example supports adjusting the proportion range according to the actual scenario business volume).

[0319] 4. Set and adjust the working BWP of all UEy to the frequency band range BWP1-ony that UEy can support within the BWP1-on frequency band range. The BWP1-ony corresponding to each UE is a subset of BWP1-on, which is the channel bandwidth within the frequency band that it can support, determined by the hardware capability of UEy. The specific steps include:

[0320] a) Query all UEy supported BWP capability information;

[0321] b) Determine the position and bandwidth of BWP1-ony of UEy in BWP1-on according to the query result and RRC policy;

[0322] c) RRC completes the corresponding update of all UEy BWP parameters and configures all UEy in the ID1 cell;

[0323] i. Set the starting PRB position of BWP1-ony;

[0324] ii. Set the number of consecutive RBs for BWP1-ony;

[0325] iii. Set other BWP1-ony related parameters of UEy to keep them consistent with the original parameters;

[0326] iv. Complete the corresponding settings for all UEy work in the ID1 cell BWP1-ony;

[0327] d) All UEs in the ID1 cell operate in the BWP1-ony frequency band;

[0328] 5. In the baseband board A of the pooling energy saving in the base station, simulate the establishment of a cell with the same ID as the target baseband board B of the service migration after pooling; the specific steps include:

[0329] a) Internal scheduling of the base station, forwarding the downlink data in the ID1 cell BWP1-on covered by the pooling target board B to the pooling power-saving baseband board A through the backplane;

[0330] i. Set the source address and destination address of the pooled target board B switching unit;

[0331] ii. Set the source address and destination address of the pooled shutdown board A switching unit;

[0332] iii. Set up synchronization to start data exchange;

[0333] b) Synchronously set the pooled power-saving baseband board A to use the data in BWP1-on (including user service data and control signaling) generated by the pooled target board B to replace the data of the corresponding BWP in the A board, that is, the BWP1-on part of the bandwidth (in this example, it is set to 40% lower, the lower 40% of BWP0 and the lower 40% of BWP1-on are in the same frequency band, and the bandwidth is 40M. This example supports percentage adjustment based on the actual margin);

[0334] c) Synchronously set the data related to the new user service in the ID1 cell received by the baseband board A to be pooled for power reduction to be directly transferred to the pooling target baseband board B for processing without processing;

[0335] d) Synchronously set the baseband board A to be pooled for power reduction to abandon the data in the BWP other than the simulated ID1 cell BWP1-on and not forward it;

[0336] 6. Through the settings, the target board B receives the frequency band corresponding data of BWP1-on sent by the power-reduction board A, and combines them in the form of baseband merging or RF merging. The remaining BWP data is discarded as invalid data, and the coverage of the target baseband board B in the coverage area of ​​the pooled power-reduction baseband board A is completed;

[0337] 7. All users in the ID0 cell covered by control board A are migrated to the ID1 cell in batches;

[0338] Method 1

[0339] a) Perform digital gain adjustment on the amplitude of all data in the cell, gradually reducing the transmit power of the ID0 cell at a speed of about 0.5 dB per second (this speed is just an example, and this example supports selecting different adjustment speeds according to actual conditions);

[0340] b) UEx actively switches from ID0 to ID1 cell due to power reduction;

[0341] c) The BWP corresponding to UEx is set to BWP1-onx, and BWP1-onx is a subset of BWP1-on;

[0342] d) After all UEx are switched to the ID1 cell, all the data sent by the ID0 cell are actively adjusted to 0;

[0343] Method (2)

[0344] The control triggers the UEs in the idle state to complete cell reselection in batches.

[0345] a) The base station sends a broadcast message to configure the neighboring cell frequency and priority, as well as the reselection threshold. In this cell, the target cell ID1 is configured as the highest priority, and the target cell threshold is reduced to -110dBm (or other threshold values ​​that can ensure triggering UE reselection).

[0346] b) UEx measures the frequency of the broadcast message and triggers cell reselection when the frequency threshold is met.

[0347] Control the UEs in the active state to complete cell switching in batches.

[0348] c) The base station sends measurement control signaling to some terminals, configures the neighboring cell frequency and measurement threshold, and reduces the threshold to -110dBm (or other threshold values ​​that can ensure triggering UE reselection). It sends it in batches of 50 UEs per second at a time interval.

[0349] d) The UE performs measurements according to the measurement control signaling and reports a measurement report when the strength of the neighboring cell signal is higher than the measurement threshold.

[0350] e) The base station makes a handover decision and sends a handover command to 50 UEs per second for the terminal to be handed over.

[0351] f) UEx completes the cell switching according to the switching command.

[0352] This example does not limit the selection of the control switching method, but only needs to ensure that all UEx migrate from ID0 to the target cell ID1.

[0353] 8. Set the pooling off baseband board to energy saving mode;

[0354] a) Set the processor chip required for baseband processing and the processor chip required for board control to power off or reset state;

[0355] b) Setting the aforementioned processing chip peripheral circuits, such as DDR (double data rate synchronous dynamic random access memory) / Flash, to a power-off or reset state;

[0356] c) Set the board control logic related chips, such as EPLD (Erasable Programmable Logic Device), in a controllable state, but keep its working state without generating or minimizing signal changes;

[0357] d) Ensure that the baseband board or BBU in the power-off or reset state retains the function of exchanging data with the backplane, and the backplane switching chip is in normal working condition;

[0358] e) Ensure that the hardware required for the fronthaul interface function of the baseband board or BBU that is in a powered-off or reset state is in working condition. The optical module is in normal working condition;

[0359] f) Ensure that the auxiliary circuits of the aforementioned normal working state chips are in normal working state, including board control logic, board clock, power supply, and storage and reset circuits required by related chips;

[0360] g) Ensure that the state adjustment of related processing resources can be realized by the BBU main control processor through commands, directly or through the board control logic introduction to realize the power-off and reset state setting and recovery of related processing chips. For example, the board control logic receives the Ethernet or other format control signaling forwarded by the switching unit for setting and recovery.

[0361] 9. All user services in cell ID1 are uniformly processed by the original processing baseband board of ID1. The original coverage area of ​​cell ID1 of the pooling target baseband board B is expanded to the coverage area of ​​cell ID0 covered by the pooling power-saving baseband board A, and ID0 is replaced;

[0362] a) The baseband user UEx in the original ID0 cell accepts the unified scheduling of the ID1 cell and allocates air interface resources;

[0363] b) The RF merging or baseband merging data processing of UEx user data and UEy user data is implemented in the baseband board B where the original ID1 cell is located. The target baseband board B of the pooled user migration replaces the baseband processing function of the pooled power-saving baseband board A;

[0364] c) The threshold parameters of the ID1 cell processed by the pooled target baseband board B are restored to the normal configuration.

[0365] Optionally, BWP1-on can be further adjusted according to the existing network traffic to meet the service requirements of UEx and UEy. BWP1-on can be equal to BWP1 at most; BWP1-onx of UEx is adjusted according to BWP1-on (it can remain unchanged for small traffic).

[0366] like Figure 5 As shown, the pooling shutdown process is as follows:

[0367] 1. Set the channel bandwidth BWP1-on of the ID1 cell in the coverage area of ​​the pooling target baseband board B during pooling to the low frequency band of BWP1, so that BWP1-on is 40% higher than BWP1 (the percentage is only an example, and this example supports adjusting the ratio range according to the actual scenario traffic volume)

[0368] 2. Set and adjust the working BWP of UEx / UEy to the frequency band range BWP1-onx / BWP1-ony that the UE can support within the BWP1-on frequency band range. The BWP corresponding to each UE is a subset of BWP1-on, which is determined by the hardware capability of UEy;

[0369] a) Query the UE's BWP capability information;

[0370] b) Determine the position and bandwidth of BWP1-onx / BWP1-ony of UEx / UEy in BWP1-on according to the query result and RRC policy;

[0371] c) RRC completes the corresponding update of all UE BWP parameters and configures all UEx / UEy in the ID1 cell;

[0372] i. Set the starting PRB position of BWP1-onx / y for each UEx / y;

[0373] ii. Set the number of consecutive RBs of BWP1-onx / y for each UEx / y;

[0374] iii. Set other BWP1-onx / y related parameters of each UEx / y to keep them consistent with the current parameters;

[0375] d) All UEs in the ID1 cell operate in the BWP1-on frequency band;

[0376] 3. The power-saving baseband board A is turned off or the dormant part is restored to normal operation;

[0377] a) The BBU main control unit sends a control command to restart the powered-off or dormant chip;

[0378] b) The data path of all service data of the ID1 cell sent by the pooling target board B remains unchanged, waiting for the control command of the base station pooling shutdown;

[0379] c) After the pooled power-reduction board A is powered off or the dormant chip is started normally, the data in the BWPs other than BWP1-on where the ID1 cell is located is filled with 0 by the chip in A;

[0380] d) The current cell of the RRU connected to the pooled power reduction board A still maintains the ID1 cell.

[0381] 4. After the pooling function is turned off, the pooling power-saving baseband board A that resumes working will establish the ID0 cell;

[0382] a) BBU simulates the startup process of adding new board A, communicates with the core network, creates a new cell with ID0, and sets BWP to BWP0;

[0383] b) Configure and set the working BWP of the ID0 cell to BWP0-off, which is 40% lower than BWP0 (the percentage is only an example, and this example supports adjusting the ratio and range according to the actual scenario traffic);

[0384] c) In the forward transmission data, the BWP0-off part of the service data in the ID0 cell data is generated by the restored baseband board A, and the BWP1-on part still forwards the data of the ID1 cell;

[0385] 5. Control all users UEx in the ID1 cell covered by the baseband card A after the pooling is closed and restored to the ID0 cell;

[0386] Method 1

[0387] The control triggers the UEs in the idle state to complete cell reselection in batches.

[0388] a) The base station sends a broadcast message to configure the neighboring cell frequency and priority, as well as the reselection threshold. In this cell, the target cell ID1 is configured as the highest priority, and the target cell threshold is reduced to -110dBm (or other threshold values ​​that can ensure triggering UE reselection).

[0389] b) UEx measures the frequency of the broadcast message and triggers cell reselection when the frequency threshold is met.

[0390] Control the UEs in the active state to complete cell switching in batches.

[0391] c) The base station sends measurement control signaling to some terminals, configures the neighboring cell frequency and measurement threshold, and reduces the threshold to -110dBm (or other threshold values ​​that can ensure triggering UE reselection). It sends it in batches of 50 UEs per second at a time interval.

[0392] d) The UE performs measurements according to the measurement control signaling and reports a measurement report when the strength of the neighboring cell signal is higher than the measurement threshold.

[0393] e) The base station makes a handover decision and sends a handover command to 50 UEs per second for the terminal to be handed over.

[0394] f) UEx completes the cell switching according to the switching command.

[0395] Method (2)

[0396] a) The BBU sends a signaling to all UEs in the ID1 cell, temporarily configuring the ID0 cell priority to be higher than the ID1 cell (in this embodiment, it can be set to 7 or other values ​​higher than the ID1 priority), and canceling the rangeToBestCell parameter configuration of each UE in the ID1 cell;

[0397] b) Increase the A2 threshold of each UE in ID1 cell by 3 dB in batches (50 UEs per second) (can be increased or decreased according to the actual coverage of the product) until the 50-user A2 event is triggered and the UE in ID1 cell starts measurement;

[0398] c) Modify the threshold or the corresponding offset value to trigger the UE in the ID0 cell signal available area to generate A4 or A5 event;

[0399] d) Send signaling to switch all UEs in ID1 cell that detect that ID0 cell is available to ID0 cell. UEs that do not detect that ID0 cell is available will switch normally according to the criteria. UEs that do not meet the switching conditions will not be switched and will stay in ID1 cell.

[0400] e) Count the number of available UEs in ID0 cell that reside in ID1 cell in the measurement result. If the number is less than 60, stop new UEs from accessing ID1 cell or switching to ID1;

[0401] Within the coverage of the ID0 cell, after all UEs available in the ID0 cell according to the measurement results are switched to the ID0 cell, the data path within A is adjusted, and the data received by A within the BWP1-on working bandwidth of the ID1 cell is replaced with 0;

[0402] f) Restore the original thresholds or offset parameters of the UE to the normal service state, restore normal access to each cell, and ensure that the time during which the UE cannot randomly access or switch to the ID1 cell does not exceed 1 second.

[0403] This example does not limit the selection of the control switching method, and only needs to ensure that all UEs in the coverage area of ​​the RRU equipment connected to all baseband boards A migrate from the ID1 cell to the ID0 cell.

[0404] Optionally, BWP0-off and BWP1-on can be further adjusted according to the existing network traffic to meet the UE business needs. In this example, the maximum working bandwidth is adjusted back to 100M. The specific setting value is determined according to the actual configuration and device properties.

[0405] 7. The pooling function is turned off and normal operation mode is restored.

[0406] In summary, the embodiment of the present invention solves the problem that the redundancy of the baseband board resources can only be coordinated within the board due to the physical connection limitation of the direct correspondence between the BBU and the RRU / AAU fronthaul interface, and it is difficult to flexibly share cross-board processing resources to achieve energy saving and consumption reduction. The cross-board scheduling and pooling allocation of processing resources between baseband processing boards are realized, so that the processing services carried on the baseband processing board in the low-load area during the valley period are migrated to other baseband boards for combined processing. During the implementation of the scheme, the power consumption of the baseband processing resources is more effectively reduced by partially shutting down or sleeping. In the valley phase of the business, the power consumption of the original baseband board can be reduced by up to 50% or more for the BBU using this scheme, and its energy saving effect greatly exceeds the existing scheme. The embodiment of the present invention solves the problem that the cross-board interaction delay requirement of large-scale control signaling in the original technical scheme is too high. In the pooling process, the signaling-level interaction between all software modules is completed in the original processing hardware, without the need for cross-board transmission, and without the need for ultra-low-latency control signaling forwarding interaction process. Reduce the complexity of the system. Furthermore, the embodiment of the present invention greatly improves the dynamic range of the pooling capability of the resource scheduling within the board through the cross-board pooling of the baseband board, and can cope with a wider range of total peak-to-valley differences, thereby further reducing the energy consumption of the BBU. In addition, the embodiment of the present invention proposes a new method to enable the UE to switch from a cell covered by an RRU to a cell in an adjacent or other area processed by the same BBU without moving its position. During the process, the air interface signal transmitted by the RRU in the area where the UE is located is switched from the original cell to the corresponding adjacent or other area cell air interface signal, and the cell ID is adjusted accordingly. This solution can ensure that the number of cells processed by the target baseband board is not increased during the cross-board pooling process, while all cell services are not interrupted and users do not feel the switching. While avoiding the problem of increased processing resource overhead due to the increase in the number of target baseband board cells, it can ensure that all user services are not interrupted and the existing network KPI is not affected.

[0407] like Figure 6 As shown, an embodiment of the present invention further provides a pooling processing device of a baseband processing unit BBU, wherein the BBU includes at least a first baseband board and a second baseband board, and the device includes:

[0408] The first adjustment module 601 is used to adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0409] A migration module 602 is used to control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0410] The first control module 603 is used to control the first baseband board to be in energy-saving mode.

[0411] The embodiment of the present invention proposes a technical solution for pooling of wireless base stations in tidal scenarios for a frame-type multi-board architecture BBU. The embodiment of the present invention combines the implementation of underlying hardware, user-controlled cell switching and other technical means, and realizes flexible reuse and sharing of processing resources between different baseband boards in the frame through more flexible pooled resource scheduling, thereby achieving a better cross-baseband board pooling energy-saving effect.

[0412] It should be noted that the BBU pooling processing device provided in the embodiment of the present invention is a device capable of executing the above-mentioned BBU pooling processing method. All embodiments of the above-mentioned BBU pooling processing method are applicable to the device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0413] like Figure 7 As shown, an embodiment of the present invention further provides a baseband processing unit BBU, including a processor 700 and a transceiver 710, wherein the transceiver 710 receives and sends data under the control of the processor 700, and the BBU includes at least a first baseband board and a second baseband board, and the processor 700 is used to perform the following operations:

[0414] Adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0415] Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell;

[0416] The first baseband board is controlled to be in energy-saving mode.

[0417] As an optional embodiment, the first parameter of the first baseband board is the same as the first parameter of the second baseband board; wherein the first parameter includes:

[0418] Working frequency band bandwidth;

[0419] Subcarrier spacing;

[0420] Center frequency;

[0421] Uplink and downlink time slot ratio.

[0422] As an optional embodiment, the processor is further configured to perform the following operations:

[0423] Adjusting the working BWP of all terminals within the coverage area of ​​the first cell to the frequency band range of the first BWP, and adjusting all channels between all terminals and BBUs within the coverage area of ​​the first cell to operate within the frequency band range of the first BWP;

[0424] The working BWP of all terminals within the coverage area of ​​the second cell is adjusted to work within the frequency band range of the second BWP, and all channels between all terminals and the BBU within the coverage area of ​​the second cell are adjusted to work within the frequency band range of the second BWP.

[0425] As an optional embodiment, the processor is further configured to perform the following operations:

[0426] Querying BWP capability information supported by terminals within the coverage area of ​​the first cell;

[0427] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the first BWP;

[0428] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the first BWP.

[0429] As an optional embodiment, the processor is further configured to perform the following operations:

[0430] Querying BWP capability information supported by the terminal within the coverage area of ​​the second cell;

[0431] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0432] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0433] As an optional embodiment, the processor is further configured to perform the following operations:

[0434] Through the target configuration, the second baseband board receives the corresponding uplink data under the symbol synchronization of the second BWP forwarded by the first baseband board, and completes the coverage of the cell covered by the second baseband board within the coverage area of ​​the first baseband board.

[0435] As an optional embodiment, the processor is further configured to perform the following operations:

[0436] Setting the first baseband board to transfer the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0437] The first baseband board is configured to clear the data of the first BWP and the uplink data other than the second BWP.

[0438] As an optional embodiment, the processor is further configured to perform the following operations:

[0439] Through the target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device.

[0440] As an optional embodiment, the processor is further configured to perform the following operations:

[0441] forwarding downlink data in a second BWP corresponding to a second cell covered by the second baseband board to the first baseband board;

[0442] Setting the first baseband board to use the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0443] The first baseband board is configured to clear the data in the first BWP target frequency band and the downlink data outside the second BWP target frequency band.

[0444] As an optional embodiment, the processor is further configured to perform the following operations:

[0445] Performing digital gain adjustment on the amplitude of all data in the first cell, and gradually reducing the transmission power of the first cell at a predetermined speed;

[0446] Because the transmit power of the first cell is reduced, all activated terminals in the first cell actively switch from the first cell to the second cell and / or other cells;

[0447] After all terminals in the first cell switch to the second cell and / or other cells, all sent data in the first cell are adjusted to 0.

[0448] As an optional embodiment, the processor is further configured to perform the following operations:

[0449] The idle terminal in the first cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0450] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the first cell to switch to the second cell and / or other cells.

[0451] As an optional embodiment, the processor is further configured to perform the following operations:

[0452] The activated terminal in the first cell receives a measurement control signaling sent by the network, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0453] enabling a terminal in the first cell to perform frequency measurement according to the measurement control signaling, and reporting the measurement result to a network when the measurement result meets the handover event triggering threshold;

[0454] Receive handover commands sent in batches to the terminal after the network makes a handover decision according to the measurement result, and handover the terminal in the first cell to the second cell and / or other cells according to the handover command.

[0455] As an optional embodiment, the processor is further configured to perform the following operations:

[0456] The terminal receives the measurement control signaling sent by the network at a preset time interval; wherein the network sends the measurement control signaling to different terminal groups at different preset time intervals.

[0457] As an optional embodiment, the processor is further configured to perform at least one of the following operations:

[0458] Setting the processing chip in the first baseband board to a power-off state, a reset state or other low-power consumption state; the processing chip includes: a processor chip required for baseband processing;

[0459] Setting the peripheral circuits of the processing chip to a power-off state, a reset state or other low-power consumption state;

[0460] Setting the chip related to the board control logic function in the first baseband board to be in a controllable state, but maintaining its working state without generating or reducing signal changes;

[0461] The first baseband board in energy-saving mode is set to retain the function of exchanging data with the backplane, and the exchange unit between the backplanes is in a normal working state;

[0462] Setting the hardware required for the fronthaul interface function of the first baseband board in the energy-saving mode to be in working state;

[0463] Setting the auxiliary circuit of the hardware or unit in working state to be in normal working state;

[0464] Setting the state adjustment of related processing resources can be realized by the BBU main control processing unit through commands;

[0465] The BBU main control processing unit can set and restore the power-off state or reset state or other low-power consumption state of the relevant processing chip through the board control logic to adjust the state of the relevant processing resources.

[0466] As an optional embodiment, the processor is further configured to perform the following operations:

[0467] In the switching unit, the processing path necessary for exchanging data with the second baseband board and the fronthaul interface is set to work normally, and the remaining redundant capabilities are in a power-off state or a reset state or other low-power consumption state.

[0468] As an optional embodiment, the processor is further configured to perform the following operations:

[0469] Adjust the frequency band size of the second BWP according to the existing network traffic to meet the service needs of terminals in the first cell coverage area and the service needs of terminals in the second cell coverage area;

[0470] and / or,

[0471] The working BWP of the terminal within the coverage area of ​​the first cell is adjusted according to the frequency band size of the second BWP.

[0472] As an optional embodiment, the processor is further configured to perform the following operations:

[0473] Controlling the hardware that is powered off, in sleep mode or in other low-power consumption state when the first baseband board is working in pooling mode to be in normal operation mode;

[0474] Adjusting the BWP of the second cell in the coverage area during the second baseband board pooling period to the target frequency band of the second BWP; the target frequency band of the second BWP is different from the target frequency band corresponding to the first BWP;

[0475] A first cell is established on the first baseband board, and the working bandwidth of the first cell is set to a target frequency band of the first BWP, which is different from the target frequency band of the second BWP; wherein the target frequency band of the first BWP and the target frequency band of the second BWP are non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board;

[0476] The working frequency bands of all air interface channels in the first cell are limited to the target frequency band range corresponding to the first cell, and the working frequency bands of all air interface channels in the second cell are limited to the target frequency band range corresponding to the second cell;

[0477] The relevant parameters of the first cell remain in the same parameter settings as in the pooled state, and the relevant parameters of the second cell remain in the same parameter settings as in the pooled state;

[0478] Migrate all terminals in the second cell in the coverage area of ​​the second baseband board during the pooling period that can use the air interface signal of the first cell to the first cell on the first baseband board;

[0479] The pooling function is turned off, and the first baseband board and the second baseband board resume normal operation.

[0480] As an optional embodiment, the processor is further configured to perform the following operations:

[0481] Through the target configuration, the second baseband board continues to receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated.

[0482] As an optional embodiment, the processor is further configured to perform the following operations:

[0483] The first baseband board is set to continuously forward the data corresponding to the second cell received from the fronthaul interface to the second baseband board for processing, and the forwarded data is adjusted to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0484] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the uplink data outside the target frequency band of the second BWP with 0.

[0485] As an optional embodiment, the processor is further configured to perform the following operations:

[0486] Through the target configuration, the first baseband board forwards the corresponding downlink data under the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated.

[0487] As an optional embodiment, the processor is further configured to perform the following operations:

[0488] Continuously forwarding the downlink data corresponding to the second cell covered by the second baseband board to the first baseband board, and adjusting the forwarded data to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted;

[0489] The first baseband board is set to use the data in the target frequency band of the second BWP generated by the second baseband board processed by the second baseband board to replace the data in the target frequency band of the second BWP in the first baseband board.

[0490] The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the downlink data outside the target frequency band of the second BWP with 0.

[0491] As an optional embodiment, the processor is further configured to perform the following operations:

[0492] The working BWP of all terminals in the coverage area during the second baseband board pooling period is adjusted to the frequency band range supported by the terminal.

[0493] As an optional embodiment, the processor is further configured to perform the following operations:

[0494] Query the BWP capability information supported by the terminal;

[0495] Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP;

[0496] The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

[0497] As an optional embodiment, the processor is further configured to perform the following operations:

[0498] Controlling the powered-off or dormant chip on the first baseband board to restart;

[0499] Controlling the data path of all service data of the second cell sent by the second baseband board to remain unchanged, and forwarding the data path of all service data of the second cell from the fronthaul interface to the second baseband board via the first baseband board to remain unchanged, waiting for the control command of closing the network pooling;

[0500] After the chip on the first baseband board that is powered off or in sleep mode is restarted, the chip in the first baseband board is responsible for filling the data in the BWP other than the second BWP where the second cell is located with 0.

[0501] As an optional embodiment, the processor is further configured to perform the following operations:

[0502] The activated terminal in the second cell receives a configuration signaling sent by the network, where the configuration signaling is used to temporarily configure the first cell to have a higher priority than the second cell;

[0503] The activated terminal in the second cell receives a first signaling sent by the network, where the first signaling is used to configure a switching threshold so that the terminal performs cell switching according to the first signaling and the configuration signaling;

[0504] The network suspends new access or switching of terminals into the second cell according to the number of available terminals in the first cell camped in the second cell in the measurement result, until all available terminals in the first cell are switched to the first cell;

[0505] The original thresholds or offset parameters of the terminal are restored to a normal operating state, normal access to each cell is restored, and the bandwidth of the first cell and the bandwidth of the second cell are restored to the bandwidth under normal network operation.

[0506] As an optional embodiment, the processor is further configured to perform the following operations:

[0507] Stop the first baseband board from transferring the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing;

[0508] Stop the first baseband board to clear the data of the first BWP and the data other than the second BWP;

[0509] The first baseband board is configured to receive the first cell data transmitted from the fronthaul interface, and the first baseband board is responsible for processing.

[0510] As an optional embodiment, the processor is further configured to perform the following operations:

[0511] Stop forwarding the downlink data in the second BWP corresponding to the second cell covered by the second baseband board to the first baseband board;

[0512] Stop the first baseband board from using the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board;

[0513] The first baseband board is configured to process the first cell data and send the data to the subsequent device via the front transmission interface.

[0514] As an optional embodiment, the processor is further configured to perform the following operations:

[0515] The idle terminal in the second cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority;

[0516] The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the second cell to switch to the first cell.

[0517] As an optional embodiment, the processor is further configured to perform the following operations:

[0518] The activated terminal in the second cell receives a measurement control signaling sent by the network at a preset time interval, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold;

[0519] enabling the terminals in the second cell to perform batch frequency measurement according to the measurement control signaling, and reporting the measurement results to the network in batches when the measurement results meet the handover event triggering threshold;

[0520] Receive a switching command sent by the network after making a switching decision based on the measurement result, and switch the terminals in the second cell to the first cell in batches according to the switching command.

[0521] The embodiment of the present invention proposes a technical solution for pooling of wireless base stations in tidal scenarios for a frame-type multi-board architecture BBU. The embodiment of the present invention combines the implementation of underlying hardware, user-controlled cell switching and other technical means, and realizes flexible reuse and sharing of processing resources between different baseband boards in the frame through more flexible pooled resource scheduling, thereby achieving a better cross-baseband board pooling energy-saving effect.

[0522] It should be noted that the BBU provided in the embodiment of the present invention is a BBU capable of executing the above-mentioned BBU pooling processing method. All embodiments of the above-mentioned BBU pooling processing method are applicable to the BBU and can achieve the same or similar beneficial effects, which will not be repeated here.

[0523] An embodiment of the present invention also provides a baseband processing unit BBU, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, the various processes in the embodiment of the pooling processing method of the BBU as described above are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0524] The embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, each process in the above-mentioned BBU pooling processing method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it is not repeated here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0525] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-readable storage media (including but not limited to disk storage and optical storage, etc.) containing computer-usable program code.

[0526] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A device that specifies functions in one or more processes and / or one or more blocks.

[0527] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable storage medium produce a paper product including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0528] These computer program instructions may also be loaded onto a computer or other programmable data processing device so that the computer or other programmable device executes a series of operating steps to produce a computer-implemented process, thereby providing instructions executed on the computer or other programmable device for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0529] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pooling processing method for a baseband processing unit BBU, characterized in that: The BBU includes at least a first baseband board and a second baseband board, and the method includes: Adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board; Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell; The first baseband board is controlled to be in energy-saving mode.

2. The method according to claim 1, characterized in that The first parameter of the first baseband board is the same as the first parameter of the second baseband board; wherein the first parameter includes: Working frequency band bandwidth; Subcarrier spacing; Center frequency; Uplink and downlink time slot ratio.

3. The method according to claim 1, characterized in that After adjusting the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP and adjusting the working BWP of the second cell covered by the second baseband board to the second BWP, the method further includes: Adjusting the working BWP of all terminals within the coverage area of ​​the first cell to the frequency band range of the first BWP, and adjusting all channels between all terminals and BBUs within the coverage area of ​​the first cell to operate within the frequency band range of the first BWP; The working BWP of all terminals within the coverage area of ​​the second cell is adjusted to work within the frequency band range of the second BWP, and all channels between all terminals and the BBU within the coverage area of ​​the second cell are adjusted to work within the frequency band range of the second BWP.

4. The method according to claim 3, characterized in that Adjusting the working BWP of all terminals within the coverage area of ​​the first cell to a frequency band range of the first BWP includes: Querying BWP capability information supported by terminals within the coverage area of ​​the first cell; Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the first BWP; The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the first BWP.

5. The method according to claim 3, characterized in that: Adjusting the working BWP of all terminals within the coverage area of ​​the second cell to a frequency band range of the second BWP includes: Querying BWP capability information supported by the terminal within the coverage area of ​​the second cell; Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP; The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

6. The method according to claim 1, characterized in that Before controlling all terminals in the first cell covered by the first baseband board to migrate to the second cell and / or other cells covered by the second baseband board, the method further includes: Through the target configuration, the second baseband board receives the corresponding uplink data under the symbol synchronization of the second BWP forwarded by the first baseband board, and completes the coverage of the cell covered by the second baseband board within the coverage area of ​​the first baseband board.

7. The method according to claim 6, characterized in that The target configuration enables the second baseband board to receive uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board, including: Setting the first baseband board to transfer the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing; The first baseband board is configured to clear the data of the first BWP and the uplink data other than the second BWP.

8. The method according to claim 6, characterized in that The method further comprises: Through the target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device.

9. The method according to claim 8, characterized in that Through the target configuration, the first baseband board forwards the downlink data corresponding to the symbol synchronization of the second BWP of the second baseband board to the subsequent device, including: forwarding downlink data in a second BWP corresponding to a second cell covered by the second baseband board to the first baseband board; Setting the first baseband board to use the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board; The first baseband board is configured to clear the data in the first BWP target frequency band and the downlink data outside the second BWP target frequency band.

10. The method according to claim 1, characterized in that Controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes: Performing digital gain adjustment on the amplitude of all data in the first cell, and gradually reducing the transmission power of the first cell at a predetermined speed; Because the transmit power of the first cell is reduced, all activated terminals in the first cell actively switch from the first cell to the second cell and / or other cells; After all terminals in the first cell switch to the second cell and / or other cells, all sent data in the first cell are adjusted to 0.

11. The method according to claim 1, characterized in that: Controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes: The idle terminal in the first cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority; The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the first cell to switch to the second cell and / or other cells.

12. The method according to claim 1, characterized in that Controlling all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board includes: The activated terminal in the first cell receives a measurement control signaling sent by the network, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold; enabling a terminal in the first cell to perform frequency measurement according to the measurement control signaling, and reporting the measurement result to a network when the measurement result meets the handover event triggering threshold; Receive handover commands sent in batches to the terminal after the network makes a handover decision according to the measurement result, and handover the terminal in the first cell to the second cell and / or other cells according to the handover command.

13. The method according to claim 12, characterized in that The activated terminal receives measurement control signaling sent by the network, including: The terminal receives the measurement control signaling sent by the network at a preset time interval; wherein the network sends the measurement control signaling to different terminal groups at different preset time intervals.

14. The method according to claim 1, characterized in that Controlling the first baseband board to be in energy-saving mode includes at least one of the following: Setting the processing chip in the first baseband board to a power-off state, a reset state or other low-power consumption state; the processing chip includes: a processor chip required for baseband processing; Setting the peripheral circuits of the processing chip to a power-off state, a reset state or other low-power consumption state; Setting the chip related to the board control logic function in the first baseband board to be in a controllable state, but maintaining its working state without generating or reducing signal changes; The first baseband board in energy-saving mode is set to retain the function of exchanging data with the backplane, and the exchange unit between the backplanes is in a normal working state; Setting the hardware required for the fronthaul interface function of the first baseband board in the energy-saving mode to be in working state; Setting the auxiliary circuit of the hardware or unit in working state to be in normal working state; Setting the state adjustment of related processing resources can be realized by the BBU main control processing unit through commands; The BBU main control processing unit can set and restore the power-off state or reset state or other low-power consumption state of the relevant processing chip through the board control logic to adjust the state of the relevant processing resources.

15. The method according to claim 14, characterized in that Set the switching unit between backplanes to be in normal working state, including: In the switching unit, the processing path necessary for exchanging data with the second baseband board and the fronthaul interface is set to work normally, and the remaining redundant capabilities are in a power-off state or a reset state or other low-power consumption state.

16. The method according to any one of claims 1 to 15, characterized in that: The method further comprises: Adjust the frequency band size of the second BWP according to the existing network traffic to meet the service needs of terminals in the first cell coverage area and the service needs of terminals in the second cell coverage area; and / or, The working BWP of the terminal within the coverage area of ​​the first cell is adjusted according to the frequency band size of the second BWP.

17. The method according to claim 1, characterized in that The method further comprises: Controlling the hardware that is powered off, in sleep mode or in other low-power consumption state when the first baseband board is working in pooling mode to be in normal operation mode; Adjusting the BWP of the second cell in the coverage area during the second baseband board pooling period to the target frequency band of the second BWP; the target frequency band of the second BWP is different from the target frequency band corresponding to the first BWP; A first cell is established on the first baseband board, and the working bandwidth of the first cell is set to a target frequency band of the first BWP, which is different from the target frequency band of the second BWP; wherein the target frequency band of the first BWP and the target frequency band of the second BWP are non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board; The working frequency bands of all air interface channels in the first cell are limited to the target frequency band range corresponding to the first cell, and the working frequency bands of all air interface channels in the second cell are limited to the target frequency band range corresponding to the second cell; The relevant parameters of the first cell remain in the same parameter settings as in the pooled state, and the relevant parameters of the second cell remain in the same parameter settings as in the pooled state; Migrate all terminals in the second cell in the coverage area of ​​the second baseband board during the pooling period that can use the air interface signal of the first cell to the first cell on the first baseband board; The pooling function is turned off, and the first baseband board and the second baseband board resume normal operation.

18. The method according to claim 17, characterized in that The method further comprises: Through the target configuration, the second baseband board continues to receive the corresponding uplink data under symbol synchronization forwarded by the first baseband board until the pooling is terminated.

19. The method according to claim 18, characterized in that By means of target configuration, the second baseband board continuously receives uplink data corresponding to the symbol synchronization forwarded by the first baseband board until the pooling is terminated, including: The first baseband board is set to continuously forward the data corresponding to the second cell received from the fronthaul interface to the second baseband board for processing, and the forwarded data is adjusted to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted; The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the uplink data outside the target frequency band of the second BWP with 0.

20. The method according to claim 17, characterized in that The method further comprises: Through the target configuration, the first baseband board forwards the corresponding downlink data under the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated.

21. The method according to claim 20, characterized in that Through target configuration, the first baseband board continuously forwards the downlink data corresponding to the symbol synchronization of the second baseband board to the subsequent device until the pooling is terminated, including: Continuously forwarding the downlink data corresponding to the second cell covered by the second baseband board to the first baseband board, and adjusting the forwarded data to the data corresponding to the target frequency band of the second BWP from the moment when the target frequency band is adjusted; The first baseband board is set to use the data in the target frequency band of the second BWP generated by the second baseband board processed by the second baseband board to replace the data in the target frequency band of the second BWP in the first baseband board. The first baseband board is configured to continuously fill the data of the target frequency band of the first BWP and the downlink data outside the target frequency band of the second BWP with 0.

22. The method according to claim 17, characterized in that Before adjusting the BWP of the second cell in the coverage area during the second baseband board pooling to the target frequency band of the second BWP, the method further includes: The working BWP of all terminals in the coverage area during the second baseband board pooling period is adjusted to the frequency band range supported by the terminal.

23. The method according to claim 22, characterized in that Adjusting the working BWP of all terminals in the coverage area during the second baseband board pooling period to a frequency band range supported by the terminal, including: Query the BWP capability information supported by the terminal; Determine, according to the query result, the position and bandwidth of the working BWP of the terminal in the second BWP; The BWP parameters of the terminal are updated according to the position and bandwidth of the working BWP of the terminal in the second BWP.

24. The method according to claim 17, characterized in that Controlling the hardware that is powered off or in sleep or other low-power consumption state when the first baseband board pooling works to be in normal operation mode includes: Controlling the powered-off or dormant chip on the first baseband board to restart; Controlling the data path of all service data of the second cell sent by the second baseband board to remain unchanged, and forwarding the data path of all service data of the second cell from the fronthaul interface to the second baseband board via the first baseband board to remain unchanged, waiting for the control command of closing the network pooling; After the chip on the first baseband board that is powered off or in sleep mode is restarted, the chip in the first baseband board is responsible for filling the data in the BWP other than the second BWP where the second cell is located with 0.

25. The method according to claim 17, characterized in that Migrating all terminals in a second cell within a coverage area of ​​the second baseband board during pooling that can use an air interface signal of the first cell to a first cell on the first baseband board, including: The activated terminal in the second cell receives a configuration signaling sent by the network, where the configuration signaling is used to temporarily configure the first cell to have a higher priority than the second cell; The activated terminal in the second cell receives a first signaling sent by the network, where the first signaling is used to configure a switching threshold so that the terminal performs cell switching according to the first signaling and the configuration signaling; The network suspends new access or switching of terminals into the second cell according to the number of available terminals in the first cell camped in the second cell in the measurement result, until all available terminals in the first cell are switched to the first cell; The original thresholds or offset parameters of the terminal are restored to a normal operating state, normal access to each cell is restored, and the bandwidth of the first cell and the bandwidth of the second cell are restored to the bandwidth under normal network operation.

26. The method according to claim 25, characterized in that Before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, stopping the second baseband board from receiving the uplink data corresponding to the symbol synchronization of the second BWP forwarded by the first baseband board through target configuration, including: Stop the first baseband board from transferring the data in the second BWP corresponding to the second cell received from the fronthaul interface to the second baseband board for processing; Stop the first baseband board to clear the data of the first BWP and the data other than the second BWP; The first baseband board is configured to receive the first cell data transmitted from the fronthaul interface, and the first baseband board is responsible for processing.

27. The method according to claim 25, characterized in that Before restoring the original thresholds or bias parameters of the terminal to a normal operating state, restoring normal access to each cell, and restoring the bandwidth of the first cell and the bandwidth of the second cell to the bandwidth under normal network operation, through target configuration, stop the first baseband board from forwarding the corresponding downlink data under the symbol synchronization of the second BWP of the second baseband board to the subsequent device, and the first baseband board itself completes the first cell processing task, including: Stop forwarding the downlink data in the second BWP corresponding to the second cell covered by the second baseband board to the first baseband board; Stop the first baseband board from using the data in the second BWP generated by the second baseband board to replace the data in the second BWP in the first baseband board; The first baseband board is configured to process the first cell data and send the data to the subsequent device via the front transmission interface.

28. The method according to claim 17, characterized in that Migrating all terminals in a second cell within a coverage area of ​​the second baseband board during pooling that can use an air interface signal of the first cell to a first cell on the first baseband board, including: The idle terminal in the second cell receives a broadcast message sent by the network, where the broadcast message is used to configure a neighboring cell frequency, a reselection threshold, and a cell priority; The second cell priority is configured in the first cell, and the second cell threshold is lowered, so that the terminal performs measurement according to the broadcast message, and the measurement result meets the reselection threshold, triggering the terminal in the second cell to switch to the first cell.

29. The method according to claim 17, characterized in that Migrating all terminals in a second cell within a coverage area of ​​the second baseband board during pooling that can use an air interface signal of the first cell to a first cell on the first baseband board, including: The activated terminal in the second cell receives a measurement control signaling sent by the network at a preset time interval, where the measurement control signaling carries a neighboring cell frequency and a handover event triggering threshold; enabling the terminals in the second cell to perform batch frequency measurement according to the measurement control signaling, and reporting the measurement results to the network in batches when the measurement results meet the handover event triggering threshold; Receive a switching command sent by the network after making a switching decision based on the measurement result, and switch the terminals in the second cell to the first cell in batches according to the switching command.

30. A pooling processing device for a baseband processing unit BBU, characterized in that: The BBU includes at least a first baseband board and a second baseband board, and the device includes: A first adjustment module is used to adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to a non-overlapping continuous frequency band, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board; A migration module, used to control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell; The first control module is used to control the first baseband board to be in energy-saving mode.

31. A baseband processing unit BBU, comprising a processor and a transceiver, wherein the transceiver receives and sends data under the control of the processor, characterized in that: The BBU includes at least a first baseband board and a second baseband board, and the processor is used to perform the following operations: Adjust the working partial bandwidth BWP of the first cell covered by the first baseband board to the first BWP, and adjust the working BWP of the second cell covered by the second baseband board to the second BWP; wherein the first BWP and the second BWP belong to non-overlapping continuous frequency bands, and the frequency band range is within the complete working bandwidth range of the first baseband board and the second baseband board; Control all terminals in a first cell covered by the first baseband board to migrate to a second cell and / or other cells covered by the second baseband board; wherein all terminal services in the second cell are processed by the second baseband board, and the coverage of the second cell and / or other cells is extended to include the coverage area of ​​the first cell, and the other cells are cells other than the first cell and the second cell that can provide services for terminals in the coverage area of ​​the first cell; The first baseband board is controlled to be in energy-saving mode.

32. A baseband processing unit (BBU), comprising a memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: When the processor executes the program, the BBU pooling processing method according to any one of claims 1 to 29 is implemented.

33. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps in the BBU pooling processing method as described in any one of claims 1 to 29 are implemented.

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