Internet of Things Service Scheduling Method and System Based on 5G Waveform System

Abstract

The present invention provides an Internet of Things service scheduling method and system based on a 5G waveform system, including: Step S1: Configure a narrowband cell in the frequency band of 5G TDD to independently carry the transmission of Internet of Things services, and the terminals of eMTC individually camp on the cell; Step S2: Configure a 5G narrowband cell within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrowband cell to achieve dynamic resource sharing. The present invention provides a scheduling mode for narrowband cells based on 5G waveforms. Through the special narrowband-based design of each channel, data scheduling for narrowband terminals is realized, making it possible to provide low-data-volume and low-power Internet of Things service transmission based on the 5G physical layer protocol within the 5G system; the present invention provides an algorithm for dynamically scheduling the services of eMBB and mMTC in the 5G system, which can enable these two types of services to share spectrum resources according to the load and configuration, effectively improving the utilization efficiency of the spectrum.

Description

Technical Field

[0001] The present invention relates to the field of 5G communication, and specifically, to an Internet of Things service scheduling method and system based on a 5G waveform system. Background Art

[0002] 5G mainly covers three major application scenarios: enhanced mobile broadband (eMBB), ultra-reliable and low-latency (uRLLC), and massive machine type communication (mMTC). Among them, mMTC is mainly designed for future scenarios with a large number of low-power, low-bandwidth, low-cost, and low latency requirements. At present, the applications of low-power wide-area Internet of Things still continue to rely on the evolution of narrowband Internet of Things (NB-IoT) and enhanced machine type communication technology (eMTC) based on the LTE-M protocol. Incorporating NB-IoT and eMTC into the 5G Internet of Things system means that traditional Internet of Things cells need to be configured at the edge of 5G broadband cells. By configuring traditional Internet of Things cells within the 5G frequency band, the function of mMTC can be achieved. In this process, the resources of the Internet of Things cells and the resources of the 5G broadband cells are managed independently and cannot be dynamically shared. For example, for the configuration where the LTE and 5G frequency bands overlap, since the terminals of eMTC and LTE access the same cell, when supporting eMTC services, it is necessary to configure a conventional LTE cell. LTE cells in different frequency bands have different restrictions on the minimum bandwidth of the cell. Taking frequency band 41 as an example, the minimum bandwidth of the LTE cell is 5 MHz. This means that when a typical eMTC service channel (occupying 6 PRBs, 1.08 MHz bandwidth) needs to be configured within this frequency band, at least 5 MHz of bandwidth cannot be used by the 5G cell, which greatly affects the resource utilization efficiency. If the frequency band of the 5G cell itself does not overlap with the LTE frequency band, the LTE cell where eMTC is located and the 5G cell will be relatively far apart in the frequency domain, making it even more impossible to share resources.

[0003] Based on the above technical background, the present invention defines a narrowband system based on 5G waveforms, reduces the minimum cell bandwidth that the current 5G system can support to the width of a narrowband in the eMTC system, and designs an algorithm for integrated narrowband and broadband scheduling, so that the resources configured for Internet of Things cells and the resources allocated for eMBB services can be dynamically shared according to the configuration strategy.

[0004] Patent document CN110268789A (application number: CN201880011058.2) discloses 5G / LTE dual connectivity, apparatuses, systems and methods for performing attachment of a wireless device to substantially concurrent connections with a next-generation network node and a legacy network node. The wireless device may be configured to transmit a request to attach to a first network node operating according to a first RAT, and transmit an indication that the wireless device is capable of maintaining a substantially concurrent connection with the first network node and a second network node operating according to a second RAT. The wireless device may also be configured to transmit a request to attach to the second network node. The request may include an indication that the wireless device is capable of maintaining a substantially concurrent connection with the first network node and the second network node. In addition, the wireless device may be configured to receive an indication that a dual connection with the first network node and the second network node has been established. However, this invention greatly affects the resource utilization efficiency. If the frequency band of the 5G cell itself does not overlap with that of LTE, the LTE cell where eMTC is located and the 5G cell will be far apart in the frequency domain, and there is even less possibility of resource sharing. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the object of the present invention is to provide an Internet of Things service scheduling method and system based on the 5G waveform system.

[0006] An Internet of Things service scheduling method based on the 5G waveform system provided by the present invention:

[0007] Configure a narrowband cell in the 5G TDD frequency band to independently carry the transmission of Internet of Things services, and the eMTC terminal resides in the cell alone;

[0008] Configure a 5G narrowband cell within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrowband cell to achieve dynamic resource sharing.

[0009] Preferably, step S1: Reduce the minimum cell bandwidth to the width of a narrowband;

[0010] Step S2: Perform dynamic scheduling of wideband and narrowband integration, read the initial configuration of the narrowband frequency points and frame structure, and adjust the positions of the broadband synchronization signal and the PBCH block;

[0011] Step S3: The broadband cell adaptively configures the physical uplink control channel and the physical random access channel;

[0012] Step S4: Determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service, and schedule the narrowband and broadband cells for the common service channels.

[0013] Preferably, the configuration of the narrowband cell in the 5G TDD frequency band includes:

[0014] The minimum bandwidth required for eMTC services is 1.08 MHz, which is the bandwidth corresponding to 6 physical resource blocks when the subcarrier spacing is configured to 15 kHz. In order to support 5G narrowband cells with a minimum bandwidth of 1.08 MHz, the design methods for common channels and physical downlink control channels in narrowband cells are as follows:

[0015] a. The frequency point selection of narrowband cells follows the alternative frequency point principle of GSCN;

[0016] b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block in narrowband cells fixedly occupies the entire 1.08 MHz bandwidth of the narrowband;

[0017] c. The transmission of system messages and paging messages in narrowband cells fixedly occupies the entire bandwidth of the narrowband;

[0018] d. The physical downlink control channel resources in narrowband cells fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots.

[0019] Preferably, the dynamic scheduling of wideband cells and narrowband cells includes:

[0020] Reading the initial configuration of narrowband frequency points and frame structures, and adjusting the positions of wideband synchronization signals and PBCH blocks; the wideband cell adaptively configures the physical uplink control channel and physical random access channel;

[0021] Determining the resource sharing strategy according to the configured scheduling priority and the load of wideband services to schedule the common service channels of wide and narrow cells;

[0022] The time-frequency positions of the wideband synchronization and physical broadcast channel signal blocks during transmission are determined by the initial configuration. When there is an overlap in the wide and narrow frequency domains, the frequency points of the wideband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the region of control resource set #0 (CORESET0) associated with the positions of the synchronization and physical broadcast channel signal blocks also avoids the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the positions and symbol numbers of the physical resource blocks of the physical downlink control channel resources for transmitting system information block 1;

[0023] After the configuration of the wideband cell's synchronization and physical broadcast channel signal blocks and control resource set #0 is adjusted, for the signals that are periodically transmitted at fixed time-frequency positions in the wideband cell according to the protocol requirements, no special processing is required in the subsequent scheduling process;

[0024] The resources of the common physical uplink control channel in the broadband cell are fixed on both sides of the broadband bandwidth according to the specification. Since the resources of the common physical uplink control channel affect the access process of all broadband cell terminals, the frequency domain configuration of the narrowband should avoid the positions where the common physical uplink control channel of the broadband is located;

[0025] The position of the physical random access channel of the broadband is configured by the system information block 1 message of the broadband. Since the broadband terminal does not have any configuration information of the narrowband cell and the transmission of the access preamble is completely triggered by the broadband terminal, the physical resource block position configuration of the broadband physical random access channel also needs to avoid the frequency band of the narrowband to avoid conflict handling during the scheduling phase;

[0026] The resources of the physical uplink control channel and the physical random access channel cannot be made unused by the broadband terminal through the scheduling algorithm. In order to ensure that the narrowband terminal always avoids the physical uplink control channel and the physical random access channel resources that the broadband will use during the scheduling of the narrowband common channel and service channel steps and avoid resource conflicts, it should be avoided during the configuration phase.

[0027] Preferably, the transmission of the primary synchronization signal, secondary synchronization signal, master system information block, and access preamble signal of the wide and narrow cells are all independent of each other;

[0028] The scheduling of the wide and narrow cells for the common service channel needs to determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service:

[0029] The wide and narrow scheduling priorities are configured by the OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program according to the usage rate of the broadband service physical resource blocks within a certain period of time;

[0030] If the narrowband service scheduling is prioritized and the resources of the narrowband are reserved for the narrowband service first, then the narrowband service is scheduled first, and then the broadband service is scheduled; if the resources of the narrowband are not scheduled in some time slots, during the broadband scheduling process, these narrowband resources are used to transmit the broadband service;

[0031] If the broadband service is prioritized, then when the broadband is in a high-load state, the broadband service is scheduled first; when the broadband load is not high, the narrowband service is still scheduled first to avoid the situation that the remaining resources after scheduling the broadband first are not within the narrowband frequency band and cannot be shared with the narrowband;

[0032] Part of the reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the conflicting resource positions, or it is necessary to perform conflict avoidance through the symbols reserved on the narrowband special subframe during the initial configuration phase.

[0033] An Internet of Things service scheduling system based on the 5G waveform system provided by the present invention:

[0034] Configure narrowband cells in the 5G TDD frequency band to independently carry the transmission of Internet of Things services, and the eMTC terminals independently camp on the cells;

[0035] Configure 5G narrowband cells within the 5G broadband cell frequency band, and the network side dynamically schedules the services of broadband cells and narrowband cells to achieve dynamic resource sharing.

[0036] Preferably, Module M1: Reduce the minimum cell bandwidth to the width of a narrowband;

[0037] Module M2: Perform dynamic scheduling of the integration of wideband and narrowband, read the initial configurations of narrowband frequency points and frame structures, and adjust the positions of wideband synchronization signals and PBCH blocks;

[0038] Module M3: The broadband cell adaptively configures the physical uplink control channel and the physical random access channel;

[0039] Module M4: Determine the resource sharing strategy according to the configured scheduling priority and the load of broadband services, and schedule the narrowband and wideband cells for the common service channels.

[0040] Preferably, the configuration of narrowband cells in the 5G TDD frequency band includes:

[0041] When the minimum bandwidth required for eMTC services is the bandwidth of 6 physical resource blocks corresponding to a 15 kHz subcarrier spacing configuration, which is 1.08 MHz; for supporting 5G narrowband cells with a minimum bandwidth of 1.08 MHz, the design methods of common channels and physical downlink control channels in narrowband cells:

[0042] a. The frequency point selection of narrowband cells follows the alternative frequency point principle of GSCN;

[0043] b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block in narrowband cells fixedly occupies the entire 1.08 MHz bandwidth of the narrowband;

[0044] c. The transmission of system messages and paging messages in narrowband cells fixedly occupies the entire bandwidth of the narrowband;

[0045] d. The physical downlink control channel resources in narrowband cells fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots.

[0046] Preferably, the dynamic scheduling of broadband cells and narrowband cells includes:

[0047] Read the initial configuration of narrowband frequency points and frame structure, and adjust the positions of wideband synchronization signals and PBCH blocks; adaptively configure the physical uplink control channel and physical random access channel for the wideband cell;

[0048] Determine the resource sharing strategy according to the configured scheduling priority and the load of wideband services to schedule the common service channels for narrow and wide cells;

[0049] The time-frequency domain positions of wideband synchronization and physical broadcast channel signal blocks during transmission are determined by the initial configuration. When there is an overlap between narrow and wide frequency domains, the frequency points of wideband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the region of control resource set #0 (CORESET0) associated with the positions of synchronization and physical broadcast channel signal blocks also avoids the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the physical resource block positions and symbol numbers of the physical downlink control channel resources for transmitting system information block 1;

[0050] After the configuration of wideband cell synchronization, physical broadcast channel signal blocks, and control resource set #0 is adjusted, for signals that are periodically transmitted at fixed time-frequency domain positions in the wideband cell according to protocol requirements, no special processing is required during subsequent scheduling;

[0051] The resources of the common physical uplink control channel in the wideband cell are fixed on both sides of the wideband bandwidth according to the specification. Since the resources of the common physical uplink control channel affect the access process of all wideband cell terminals, the narrowband frequency domain configuration should avoid the positions where the common physical uplink control channel of the wideband is located;

[0052] The position of the wideband physical random access channel is configured by the system information block 1 message of the wideband. Since wideband terminals do not have any configuration information of narrowband cells and the transmission of access preambles is completely triggered by wideband terminals, the physical resource block position configuration of the wideband physical random access channel also needs to avoid the narrowband frequency band to avoid conflict handling during the scheduling phase;

[0053] The resources of the physical uplink control channel and physical random access channel cannot be made unused by wideband terminals through the scheduling algorithm. In order to ensure that narrowband terminals always avoid the physical uplink control channel and physical random access channel resources that wideband will use during the scheduling of narrowband common channels and service channels and avoid resource conflicts, avoid them during the configuration phase.

[0054] Preferably, the transmission of the primary synchronization signal, secondary synchronization signal, master system information block, and access preamble signal of narrow and wide cells are all independent of each other;

[0055] The scheduling of narrowband and wideband cells for common traffic channels needs to determine the resource sharing strategy according to the configured scheduling priority and the load of broadband services:

[0056] The scheduling priority of narrowband and wideband is configured by OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by an internal program based on the usage rate of broadband service physical resource blocks within a period of time;

[0057] If narrowband service scheduling is prioritized and narrowband resources are reserved for narrowband services first, then narrowband services are scheduled first, and then broadband services are scheduled; if narrowband resources are not scheduled in some time slots and broadband is being scheduled, this part of narrowband resources is used to transmit broadband services;

[0058] If broadband services are prioritized, then when the broadband is in a high-load state, broadband services are scheduled first; when the broadband load is not high, narrowband services are still scheduled first to avoid the situation that the remaining resources after scheduling broadband first are not within the narrowband frequency band and cannot be shared with narrowband;

[0059] Some reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during scheduling. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the resource positions with conflicts, or it is necessary to avoid conflicts through the symbols reserved on the narrowband special subframe during the initial configuration stage.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] 1. The present invention provides a scheduling mode for narrowband cells based on 5G waveforms. Through the special design of each channel based on narrowband, data scheduling for narrowband terminals is realized, making it possible to provide low-data-volume and low-power-consuming Internet of Things service transmission based on the 5G physical layer protocol within the 5G system;

[0062] 2. The present invention provides an algorithm for dynamic scheduling of eMBB and mMTC services in the 5G system, which can enable these two types of services to share spectrum resources according to the load and configuration, effectively improving the spectrum utilization efficiency;

[0063] 3. Based on the 5G waveform system, the present invention provides a dynamic scheduling method for enhancing resource sharing between mobile broadband services and large-scale Internet of Things services;

[0064] 4. As a supplementary solution for 5G to support wide-area Internet of Things, due to the flexible frame structure configuration of 5G narrowband cells, it can better align the uplink and downlink time slot configurations of broadband cells, is more suitable for configuring narrowband cells into the frequency domain of broadband cells, and at the same time avoids signal interference between mMTC and eMBB services. Description of the Drawings

[0065] Other features, objects, and advantages of the present invention will become more apparent by reading the following detailed description of non - limiting embodiments with reference to the accompanying drawings:

[0066] Figure 1 It is a schematic diagram of narrow - band cell CCE resource allocation;

[0067] Figure 2 It is an example of narrow - band downlink scheduling;

[0068] Figure 3 It is an example of narrow - band uplink scheduling;

[0069] Figure 4 It is a flow chart of the wide - band and narrow - band integrated scheduling algorithm. Detailed Embodiments

[0070] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those of ordinary skill in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0071] Example 1:

[0072] According to an Internet of Things service scheduling method based on the 5G waveform system provided by the present invention:

[0073] Configure narrow - band cells in the frequency band of 5G TDD to independently carry the transmission of Internet of Things services, and eMTC terminals separately camp on the cells;

[0074] Configure 5G narrow - band cells within the 5G wide - band cell frequency band, and the network side dynamically schedules the services of wide - band cells and narrow - band cells to achieve dynamic resource sharing.

[0075] Specifically,

[0076] Step S1: Reduce the minimum bandwidth of the cell to the width of a narrow - band;

[0077] Step S2: Perform dynamic scheduling of wide - band and narrow - band integration, read the initial configuration of narrow - band frequency points and frame structures, and adjust the positions of wide - band synchronization signals and PBCH blocks;

[0078] Step S3: The wide - band cell adaptively configures the physical uplink control channel and the physical random access channel;

[0079] Step S4: Determine the resource sharing strategy according to the configured scheduling priority and the load of wide - band services, and perform scheduling of narrow - and wide - band cells for common service channels.

[0080] Specifically, configuring the narrowband cell in the frequency band of 5G TDD includes:

[0081] The minimum bandwidth required for eMTC services is 1.08 MHz, which is the bandwidth corresponding to 6 physical resource blocks when the subcarrier spacing is configured at 15 kHz; in order to support a 5G narrowband cell with a minimum bandwidth of 1.08 MHz, the design methods for the common channels and the physical downlink control channel in the narrowband cell are as follows:

[0082] a. The frequency point selection of the narrowband cell follows the alternative frequency point principle of GSCN;

[0083] b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block in the narrowband cell fixedly occupies the entire 1.08 MHz bandwidth of the narrowband;

[0084] c. The transmission of the system message and paging message in the narrowband cell fixedly occupies the entire bandwidth of the narrowband;

[0085] d. The physical downlink control channel resources in the narrowband cell fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots.

[0086] Specifically, the dynamic scheduling of the wideband cell and the narrowband cell includes:

[0087] Read the initial configuration of the narrowband frequency point and frame structure, and adjust the positions of the wideband synchronization signal and the PBCH block; the wideband cell adaptively configures the physical uplink control channel and the physical random access channel;

[0088] Determine the resource sharing strategy according to the configured scheduling priority and the load of the wideband service to schedule the narrow and wide cells for the common service channels;

[0089] The time-frequency positions of the wideband synchronization and physical broadcast channel signal blocks during transmission are determined by the initial configuration. When there is an overlap in the narrow and wide frequency domains, the frequency points of the wideband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the region of control resource set #0 (CORESET0) associated with the positions of the synchronization and physical broadcast channel signal blocks is also configured to avoid the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the positions and symbol numbers of the physical resource blocks of the physical downlink control channel resources for transmitting system information block 1;

[0090] After the configuration of the wideband cell's synchronization and physical broadcast channel signal blocks and control resource set #0 is adjusted, for the signals that are periodically transmitted at fixed time-frequency positions in the wideband cell according to the protocol requirements, no special processing is required during subsequent scheduling;

[0091] The resources of the common physical uplink control channel in the broadband cell are fixed on both sides of the broadband bandwidth according to the specification. Since the resources of the common physical uplink control channel affect the access process of all broadband cell terminals, the frequency domain configuration of the narrowband should avoid the positions where the common physical uplink control channel of the broadband is located;

[0092] The position of the physical random access channel of the broadband is configured by the system information block 1 message of the broadband. Since the broadband terminal does not have any configuration information of the narrowband cell, and the transmission of the access preamble is completely triggered by the broadband terminal, the configuration of the physical resource block position of the broadband physical random access channel also needs to avoid the frequency band of the narrowband to avoid conflict handling during the scheduling phase;

[0093] The resources of the physical uplink control channel and the physical random access channel cannot be made unused by the broadband terminal through the scheduling algorithm. In order to make the narrowband terminal always avoid the physical uplink control channel and the physical random access channel resources that the broadband will use during the steps of scheduling the narrowband common channel and service channel, and avoid resource conflicts, avoid them during the configuration phase.

[0094] Specifically, the transmission of the primary synchronization signal, secondary synchronization signal, master system information block, and access preamble signal of the narrow and wide cells are all independent of each other;

[0095] The scheduling of the narrow and wide cells for the common service channel needs to determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service:

[0096] The narrow and wide scheduling priorities are configured by the OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program according to the usage rate of the broadband service physical resource blocks within a certain period of time;

[0097] If the narrowband service scheduling has priority and the resources of the narrowband are reserved for the narrowband service first, then the narrowband service is scheduled first, and then the broadband service is scheduled; if the resources of the narrowband are not scheduled in some time slots, during the broadband scheduling process, these narrowband resources are used to transmit the broadband service;

[0098] If the broadband service has priority, then when the broadband is in a high-load state, the broadband service is scheduled first; when the broadband load is not high, the narrowband service is still scheduled first to avoid the situation that the remaining resources after scheduling the broadband first are not within the narrowband frequency band and cannot be shared with the narrowband;

[0099] Some reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the conflicting resource positions, or during the initial configuration phase, perform conflict avoidance through the symbols reserved on the narrowband special subframe.

[0100] Example 2:

[0101] Example 2 is a preferred example of Example 1 to more specifically illustrate the present invention.

[0102] Those skilled in the art can understand a method for scheduling Internet of Things services based on a 5G waveform system provided by the present invention as a specific implementation manner of an Internet of Things service scheduling system based on a 5G waveform system, that is, the Internet of Things service scheduling system based on a 5G waveform system can be implemented by executing the step flow of the method for scheduling Internet of Things services based on a 5G waveform system.

[0103] An Internet of Things service scheduling system based on a 5G waveform system provided by the present invention:

[0104] Configure a narrowband cell in the frequency band of 5G TDD to independently carry the transmission of Internet of Things services, and the eMTC terminal resides in the cell alone;

[0105] Configure a 5G narrowband cell within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrowband cell to achieve dynamic resource sharing.

[0106] Specifically,

[0107] Module M1: Reduce the minimum bandwidth of the cell to the width of a narrowband;

[0108] Module M2: Perform dynamic scheduling of wideband and narrowband fusion, read the initial configuration of the narrowband frequency point and frame structure, and adjust the positions of the wideband synchronization signal and the PBCH block;

[0109] Module M3: The broadband cell adaptively configures the physical uplink control channel and the physical random access channel;

[0110] Module M4: Determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service, and schedule the narrowband and wideband cells for the common service channel.

[0111] Specifically, the configuration of the narrowband cell in the 5G TDD frequency band includes:

[0112] The minimum bandwidth required for eMTC services is 1.08 MHz corresponding to the bandwidth of 6 physical resource blocks when the subcarrier spacing is configured at 15 kHz; in order to support a 5G narrowband cell with a minimum bandwidth of 1.08 MHz, the design method of the common channel and the physical downlink control channel in the narrowband cell:

[0113] a. The frequency point selection of the narrowband cell follows the alternative frequency point principle of GSCN;

[0114] b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block of the narrowband cell fixedly occupies the entire 1.08 MHz bandwidth of the narrowband;

[0115] c. The transmission of the system message and paging message of the narrowband cell fixedly occupies the entire bandwidth of the narrowband;

[0116] d. The physical downlink control channel resources of the narrowband cell fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots.

[0117] Specifically, the dynamic scheduling of the wideband cell and narrowband cell includes:

[0118] Reading the initial configuration of the narrowband frequency point and frame structure, and adjusting the positions of the wideband synchronization signal and PBCH block; the wideband cell adaptively configures the physical uplink control channel and physical random access channel;

[0119] Determining the resource sharing strategy according to the configured scheduling priority and the load of the wideband service to schedule the narrow and wide cells for the common service channel;

[0120] The time-frequency domain positions of the wideband synchronization and physical broadcast channel signal blocks are determined by the initial configuration. When there is an overlap in the narrow and wide frequency domains, the frequency points of the wideband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the area of the control resource set #0 (CORESET0) associated with the positions of the synchronization and physical broadcast channel signal blocks also avoids the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the positions and symbol numbers of the physical resource blocks of the physical downlink control channel resources for transmitting the system information block 1;

[0121] After the configuration of the wideband cell's synchronization and physical broadcast channel signal blocks and control resource set #0 is adjusted, for the signals that are periodically transmitted at fixed time-frequency domain positions in the wideband cell according to the protocol requirements, no special processing is required in the subsequent scheduling process;

[0122] The resources of the wideband cell's common physical uplink control channel are fixed on both sides of the wideband bandwidth according to the specification. Since the resources of the common physical uplink control channel affect the access process of all wideband cell terminals, the narrowband frequency domain configuration should avoid the positions where the wideband common physical uplink control channel is located;

[0123] The position of the wideband physical random access channel is configured by the system information block 1 message of the wideband. Since the wideband terminal does not have any configuration information of the narrowband cell and the transmission of the access preamble is completely triggered by the wideband terminal, the configuration of the physical resource block position of the wideband physical random access channel also needs to avoid the narrowband frequency band to avoid conflict handling during the scheduling phase;

[0124] The resources of the physical uplink control channel and the physical random access channel cannot be made unused by the broadband terminal through the scheduling algorithm. In order to enable the narrowband terminal to always avoid the resources of the physical uplink control channel and the physical random access channel that the broadband will use during the steps of scheduling the narrowband common channel and the service channel, resource conflicts are avoided, and this is done during the configuration phase.

[0125] Specifically, the transmission of the primary synchronization signal, the secondary synchronization signal, the master system information block, and the access preamble signal in the wide and narrow cells are all independent of each other;

[0126] For the scheduling of the common service channels in the wide and narrow cells, the resource sharing strategy needs to be determined according to the configured scheduling priority and the load of the broadband service:

[0127] The wide and narrow scheduling priorities are configured by the parameters of the OAM, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program based on the usage rate of the broadband service physical resource blocks statistically over a period of time;

[0128] If the narrowband service scheduling is prioritized and the narrowband resources are reserved for the narrowband service first, then the narrowband service is scheduled first, and then the broadband service is scheduled; if the narrowband resources are not scheduled in some time slots, during the broadband scheduling process, this part of the narrowband resources is used to transmit the broadband service;

[0129] If the broadband service is prioritized, then when the broadband is in a high-load state, the broadband service is scheduled first; when the broadband load is not high, the narrowband service is still scheduled first to avoid the situation that the resources left after scheduling the broadband first are not within the narrowband frequency band and cannot be shared with the narrowband;

[0130] Part of the reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the conflicting resource positions, or during the initial configuration phase, conflict avoidance is performed through the symbols reserved on the narrowband special subframe.

[0131] Example 3:

[0132] Embodiment 3 is a preferred example of Embodiment 1 to more specifically illustrate the present invention.

[0133] In the first step of the present invention, a solution for a small-bandwidth TDD cell based on 5G wireless waveforms and suitable for the transmission requirements of eMTC services is proposed. This narrow-band cell can be configured in the 5G TDD frequency band to independently carry the transmission of Internet of Things services. eMTC terminals can individually camp on this cell without having to camp on the standard 5G broadband cell simultaneously. In the second step of the present invention, based on the first step, an algorithm is proposed for configuring a 5G narrow-band cell within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrow-band cell to achieve dynamic resource sharing.

[0134] The technical solution corresponding to the present invention includes two major aspects:

[0135] (1) Support for 5G narrow-band cells with a minimum bandwidth of 1.08 MHz

[0136] The minimum bandwidth required for eMTC services is the bandwidth corresponding to 6 physical resource blocks (PRBs) when the subcarrier spacing is configured at 15 kHz, which is 1.08 MHz. The bandwidths of the SSB (Synchronization Signal and PBCH Block) and CORESET (Control Resource Set) 0 of ordinary 5G cells are not less than the bandwidth of 20 PRBs. To support 5G narrow-band cells with a minimum bandwidth of 1.08 MHz, the present invention provides new design methods for the common channels and PDCCH (Physical downlink control channel) channels in narrow-band cells:

[0137] 1. The frequency point selection of narrow-band cells follows the alternative frequency point principle of GSCN (Global Synchronization Channel Number);

[0138] 2. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block (PSS / SSS / MIB) of narrow-band cells will fixedly occupy the entire 1.08 MHz bandwidth of the narrow band;

[0139] 3. The transmission of the system message and paging message of narrow-band cells fixedly occupies the entire bandwidth of the narrow band;

[0140] 4. The PDCCH resources of narrow-band cells fixedly occupy the entire bandwidth of the narrow band and can be configured across time slots.

[0141] (2) Support for the integrated scheduling of 5G narrow-band cells and 5G broadband cells

[0142] When a 5G narrow-band cell is configured within the 5G broadband cell bandwidth, when configuring the broadband cell, it is necessary to:

[0143] 1. Avoid the overlap of the positions of the SSB and CORESET0 in the broadband cell with the narrowband frequency domain;

[0144] 2. Avoid the overlap of the area configurations of the broadband PRACH (Physical random-access channel) and PUCCH (Physical uplink control channel) with the narrowband frequency domain;

[0145] 3. Avoid the overlap of the configuration of the broadband reference signal with the narrowband frequency domain;

[0146] At the same time, it is necessary to dynamically schedule mMTC / eMBB services based on the configuration of the service priorities of 5G services and Internet of Things services (URLLC services are always preferentially scheduled due to the low-latency service requirements):

[0147] If the eMBB service has a higher priority than mMTC:

[0148] Scenario 1: When the eMBB service load is high, the 5G narrowband cell only broadcasts synchronization signals and master system information blocks, and prohibits access requests for Internet of Things services in the narrowband cell;

[0149] Scenario 2: When the eMBB service load is low, the resources of the 5G narrowband cell can be used for the transmission of Internet of Things services;

[0150] If the mMTC service has a higher priority than eMBB:

[0151] Scenario 3: When there is a transmission requirement for Internet of Things services in a time slot, the resources of the 5G narrowband cell are preferentially used for transmission requests for Internet of Things data;

[0152] Scenario 4: When the load of Internet of Things services is low and there is no transmission requirement for Internet of Things services in some time slots or PRBs, the idle part of the resources in the 5G narrowband cell can be used for eMBB transmission.

[0153] Example 4:

[0154] Embodiment 4 is a preferred example of Embodiment 1, which is used to illustrate the present invention more specifically.

[0155] (1) Definition method of the PDCCH in the 5G narrowband cell:

[0156] The PDCCH area method in the narrowband cell is different from that in the broadband cell, and it needs to occupy the resources of the entire bandwidth and the resources of the entire time slot.

[0157] The CCE (Control Channel Element) of the narrowband PDCCH (Physical Downlink Control Channel) occupies nearly half of the time-domain resources in a PRB (Physical Resource Block). The first CCE resource in the same PRB occupies symbols 2 - 7 in a downlink slot, and the second CCE resource occupies symbols 8 - 13 in the downlink slot. The first 2 symbols in the slot are reserved without signal allocation. To support a large PDCCH aggregation level, the resource interval of the PDCCH allows cross-slot configuration. The specific configuration is as Figure 1 :

[0158] (2) Exclusive scheduling method for 5G narrowband cell channels:

[0159] Different from 5G wideband cells, the primary synchronization signal, secondary synchronization signal, and master information block (PSS / SSS / MIB) of narrowband cells are scheduled on predefined fixed downlink slots with a 10-millisecond period, occupying the entire downlink PRB.

[0160] Other messages are scheduled according to the new PDCCH resource allocation method and the configuration of the search space. In the scheduling of narrowband cells, on the one hand, it supports the retransmission function in the 5G system, and on the other hand, it adds the function of splitting a single data block and scheduling it across slots. This new cross-slot scheduling method different from wideband cells can solve the problem that the common channel message is too long and the total bandwidth of the cell is limited and cannot be sent at one time.

[0161] Suppose the PDCCH resources are configured on slot 0 and slot 1, and the PUCCH (Physical Uplink Control Channel) resources for sending uplink feedback (HARQ-ACK, Hybrid Automatic Repeat Request-Acknowledgement) are configured on slot 9. The uplink and downlink data scheduling of multiple narrowband terminals is as Figures 2 - 3 :

[0162] (3) Dynamic scheduling method for 5G narrowband and wideband integration:

[0163] When the narrowband cell providing Internet of Things data transmission services and the wideband cell supporting eMBB services overlap in the frequency domain, an example of the scheduling algorithm process for narrowband and wideband is as Figure 4 :

[0164] 1. The time-frequency domain position of the wideband SSB during transmission is determined by the initial configuration. When there is an overlap between the wide and narrow frequency domains, to avoid conflicts between the wide and narrow synchronization signals and the transmission of the MIB (Master Information Block), the frequency point selection of the wideband SSB should avoid the entire bandwidth of the narrowband, and the region of CORESET0 (Control Resource Set #0) associated with the SSB position also needs to avoid the narrowband frequency domain during configuration. CORESET0 specifically refers to the common CORESET#0 configured in the MIB, corresponding to the position and symbol number of the PRBs of the PDCCH resources for transmitting SIB1.

[0165] After the configuration of the SSB and CORESET#0 in the wideband cell is adjusted, for signals that must be periodically transmitted at fixed time-frequency domain positions in accordance with the protocol in the wideband cell, no special processing is required during subsequent scheduling. Otherwise, resource conflicts will occur when the wide and narrow cells independently transmit synchronization signals and the MIB.

[0166] 2. The resources of the common PUCCH (Physical Uplink Control Channel) in the wideband cell are fixed on both sides of the wideband bandwidth according to the specification. Since the resources of the common PUCCH affect the access process of all wideband cell terminals, the narrowband frequency domain configuration should avoid the positions where the wideband common PUCCH is located.

[0167] 3. The position of the wideband PRACH (Physical Random-access Channel) is configured by the SIB1 (System Information Block #1) message of the wideband. Since the wideband terminal does not have any configuration information of the narrowband cell and the transmission of the access preamble is completely triggered by the wideband terminal, the PRB (Physical Resource Block) position configuration of the wideband PRACH also needs to avoid the narrowband frequency band to avoid conflict handling during the scheduling phase.

[0168] The resources of the PUCCH and PRACH cannot be made unused by the wideband terminal through the scheduling algorithm. To ensure that narrowband terminals always avoid the PUCCH / PRACH resources that the wideband may use during the step of "scheduling narrowband common channels and traffic channels" to avoid resource conflicts, it is chosen to avoid them during the configuration phase.

[0169] 4. At any time, the transmission of PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), MIB, and preamble signals in the wide and narrow cells are independent of each other and do not affect each other.

[0170] 5. The scheduling of the common service channels in the wide and narrow cells needs to determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service:

[0171] The scheduling priority of the wide and narrow cells is configured by the OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program based on the usage rate of the broadband service PRB within a period of time.

[0172] If the narrowband service scheduling is prioritized and the resources of the narrowband are reserved for the narrowband service first, then the narrowband service is scheduled first, and then the broadband service is scheduled. If the narrowband resources are not scheduled in some time slots, during the broadband scheduling process, these narrowband resources can be used to transmit the broadband service.

[0173] If the broadband service is prioritized, then when the broadband is in a high-load state, the broadband service is scheduled first; when the broadband load is not high, the narrowband service is still scheduled first to avoid the situation where the remaining resources after scheduling the broadband first are not within the narrowband frequency band and cannot be shared with the narrowband.

[0174] 6. Some reference signals in the broadband cell may be configured in the broadband transmission mode, such as CSI-RS (Channel State Information Reference Signal), SRS (Sounding Reference Signal), etc. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the conflicting resource positions, or needs to perform conflict avoidance through the symbols reserved on the narrowband special subframe during the initial configuration stage.

[0175] In summary, the present invention provides a scheduling mode for narrowband cells based on 5G waveforms. Through the special design of each channel based on the narrowband, the data scheduling for narrowband terminals is realized, making it possible to provide low-data-volume and low-power IoT service transmission based on the 5G physical layer protocol within the 5G system. At the same time, the present invention provides an algorithm for the dynamic scheduling of eMBB and mMTC services in the 5G system, which can enable these two types of services to share spectrum resources according to the load and configuration, effectively improving the spectrum utilization efficiency.

[0176] Those skilled in the art know that, in addition to implementing the systems, devices, and their respective modules provided by the present invention in the form of pure computer-readable program code, the method steps can be logically programmed to enable the systems, devices, and their respective modules provided by the present invention to be implemented in the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers, etc., to achieve the same program. Therefore, the systems, devices, and their respective modules provided by the present invention can be considered as a kind of hardware component, and the modules included therein for implementing various programs can also be regarded as the structures within the hardware component; the modules for implementing various functions can also be regarded as either software programs for implementing the methods or the structures within the hardware component.

[0177] The specific embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. Without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. An Internet of Things service scheduling method based on the 5G waveform system, characterized in that: The narrowband cell is configured in the 5G TDD frequency band to independently carry the transmission of Internet of Things services, and the eMTC terminals individually camp on the cell. The 5G narrowband cell is configured within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrowband cell to achieve dynamic resource sharing. Step S1: Reduce the minimum cell bandwidth to the width of a narrowband. Step S2: Perform dynamic scheduling for wide-narrowband integration, read the initial configuration of the narrowband frequency point and frame structure, and adjust the positions of the broadband synchronization signal and PBCH block. Step S3: The broadband cell adaptively configures the physical uplink control channel and the physical random access channel. Step S4: Determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service to schedule the wide-narrow cells for the common service channel. The configuration of the narrowband cell in the 5G TDD frequency band includes: The minimum bandwidth required for eMTC services is 1.08 MHz corresponding to the bandwidth of 6 physical resource blocks when the subcarrier spacing is configured at 15 kHz. To support the 5G narrowband cell with a minimum bandwidth of 1.08 MHz, the design method of the common channel and the physical downlink control channel in the narrowband cell: a. The frequency point selection of the narrowband cell follows the alternative frequency point principle of GSCN. b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block in the narrowband cell fixedly occupies the entire 1.08 MHz bandwidth of the narrowband. c. The transmission of the system message and paging message in the narrowband cell fixedly occupies the entire bandwidth of the narrowband. d. The physical downlink control channel resources in the narrowband cell fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots. The dynamic scheduling of the broadband cell and the narrowband cell includes: Read the initial configuration of the narrowband frequency point and frame structure, and adjust the positions of the broadband synchronization signal and PBCH block; the broadband cell adaptively configures the physical uplink control channel and the physical random access channel. Determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband service to schedule the wide-narrow cells for the common service channel. The time-frequency domain positions of the broadband synchronization and physical broadcast channel signal blocks are determined by the initial configuration. When there is an overlap in the wide-narrow frequency domain, the frequency points of the broadband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the area of the control resource set #0 (CORESET0) associated with the positions of the synchronization and physical broadcast channel signal blocks also avoids the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the positions and symbol numbers of the physical resource blocks of the physical downlink control channel resources for transmitting the system information block 1. After the configuration of the broadband cell synchronization and physical broadcast channel signal blocks and the control resource set #0 is adjusted, for the signals that are periodically transmitted at fixed time-frequency domain positions in the broadband cell according to the protocol requirements, no special processing is required in the subsequent scheduling process. The resources of the common physical uplink control channel in the broadband cell are fixed on both sides of the broadband bandwidth according to the specification. Since the resources of the common physical uplink control channel affect the access process of all broadband cell terminals, the frequency-domain configuration of the narrowband should avoid the location where the broadband common physical uplink control channel is located; The position of the broadband physical random access channel is configured by the system information block 1 message of the broadband. Since the broadband terminal does not have any configuration information of the narrowband cell, and the transmission of the preamble is completely triggered by the broadband terminal, the configuration of the physical resource block position of the broadband physical random access channel also needs to avoid the narrowband frequency band to prevent conflict handling during the scheduling phase; The resources of the physical uplink control channel and the physical random access channel cannot be made unused by the broadband terminal through the scheduling algorithm. In order to ensure that the narrowband terminal always avoids the physical uplink control channel and physical random access channel resources used by the broadband during the scheduling of the narrowband common channel and traffic channel steps, resource conflicts are avoided by avoiding them during the configuration phase; The transmission of the primary synchronization signal, secondary synchronization signal, master system information block, and preamble signal of the narrowband and broadband cells are all independent of each other; The scheduling of the common traffic channels in the narrowband and broadband cells needs to determine the resource sharing strategy according to the configured scheduling priority and the load of the broadband services: The narrowband and broadband scheduling priorities are configured by the OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program based on the usage rate of the broadband service physical resource blocks over a period of time; If the narrowband service scheduling is prioritized and the narrowband resources are reserved for the narrowband service first, then the narrowband service is scheduled first, and then the broadband service is scheduled; if the narrowband resources are not scheduled in some time slots, during the broadband scheduling process, these narrowband resources are used to transmit the broadband service; If the broadband service is prioritized, then when the broadband is in a high-load state, the broadband service is scheduled first; when the broadband load is not high, the narrowband service is still scheduled first to avoid the situation where the resources remaining after scheduling the broadband first are not within the narrowband frequency band and cannot be shared with the narrowband; Some reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the conflicting resource positions, or during the initial configuration phase, conflict avoidance needs to be performed through the symbols reserved on the narrowband special subframe; 2. An Internet of Things service scheduling system based on the 5G waveform system, characterized in that: The narrowband cell is configured in the 5G TDD frequency band to independently carry the transmission of Internet of Things services, and the eMTC terminals camp on the cell separately; A 5G narrowband cell is configured within the 5G broadband cell frequency band, and the network side dynamically schedules the services of the broadband cell and the narrowband cell to achieve dynamic resource sharing; Module M1: Reduce the minimum cell bandwidth to the width of a narrowband; Module M2: Perform dynamic scheduling of narrowband and broadband integration, read the initial configuration of the narrowband frequency points and frame structure, and adjust the positions of the broadband synchronization signal and PBCH block; Module M3: Adaptively configure the physical uplink control channel and the physical random access channel for broadband cells; Module M4: Determine the resource sharing strategy according to the configured scheduling priority and the load of broadband services to schedule the common service channels for narrow and broadband cells; The configuration of narrowband cells in the 5G TDD frequency band includes: The minimum bandwidth required for eMTC services is 1.08 MHz, which is the bandwidth corresponding to 6 physical resource blocks when the subcarrier spacing is configured to 15 kHz; To support 5G narrowband cells with a minimum bandwidth of 1.08 MHz, the design methods for the common channels and the physical downlink control channel in narrowband cells are as follows: a. The frequency point selection of narrowband cells follows the alternative frequency point principle of GSCN; b. The transmission of the primary synchronization signal, secondary synchronization signal, and master information block in narrowband cells fixedly occupies the entire 1.08 MHz bandwidth of the narrowband; c. The transmission of the system message and paging message in narrowband cells fixedly occupies the entire bandwidth of the narrowband; d. The physical downlink control channel resources in narrowband cells fixedly occupy the entire bandwidth of the narrowband and can be configured across time slots; The dynamic scheduling of broadband cells and narrowband cells includes: Read the initial configuration of narrowband frequency points and frame structures, and adjust the positions of broadband synchronization signals and PBCH blocks; Adaptively configure the physical uplink control channel and the physical random access channel for broadband cells; Determine the resource sharing strategy according to the configured scheduling priority and the load of broadband services to schedule the common service channels for narrow and broadband cells; The time-frequency domain positions of the broadband synchronization and physical broadcast channel signal blocks are determined by the initial configuration. When there is an overlap in the narrow and broadband frequency domains, the frequency points of the broadband synchronization and physical broadcast channel signal blocks are selected to avoid the entire bandwidth of the narrowband, and the region of control resource set #0 (CORESET0) associated with the positions of the synchronization and physical broadcast channel signal blocks also avoids the narrowband frequency domain during configuration. CORESET0 refers to the control resource set #0 configured in the master system information block, corresponding to the physical resource block positions and symbol numbers of the physical downlink control channel resources for transmitting system information block 1; After the configuration of the broadband cell synchronization and physical broadcast channel signal blocks and control resource set #0 is adjusted, for the signals that are periodically transmitted at fixed time-frequency domain positions in the broadband cell according to the protocol requirements, no special processing is required in the subsequent scheduling process; The resources of the common physical uplink control channel in the broadband cell are fixed on both sides of the broadband bandwidth. Since the resources of the common physical uplink control channel affect the access process of all broadband cell terminals, the narrowband frequency domain configuration should avoid the positions where the common physical uplink control channel in the broadband is located; The position of the broadband physical random access channel is configured by the message of broadband system information block 1. Since the broadband terminal does not have any configuration information of the narrowband cell and the transmission of the access preamble is completely triggered by the broadband terminal, the physical resource block position configuration of the broadband physical random access channel also needs to avoid the narrowband frequency band to avoid conflict handling during the scheduling phase; The resources of the physical uplink control channel and the physical random access channel cannot be made unused by the broadband terminal through the scheduling algorithm. In order to ensure that narrowband terminals always avoid the resources of the physical uplink control channel and the physical random access channel that may be used by the broadband during the scheduling of narrowband common channels and traffic channels, thus avoiding resource conflicts, this should be done during the configuration phase; The transmission of the primary synchronization signal, secondary synchronization signal, master system information block, and access preamble signal in both narrowband and broadband cells are independent of each other; The scheduling of the common traffic channels in narrowband and broadband cells needs to determine the resource sharing strategy based on the configured scheduling priority and the load of broadband services: The narrowband and broadband scheduling priorities are configured by OAM parameters, and the specific configuration strategy is determined by the operator; the broadband service load is obtained by the internal program based on the usage rate of broadband service physical resource blocks over a period of time; If narrowband service scheduling has priority and narrowband resources are reserved for narrowband services first, then narrowband services are scheduled first, followed by broadband services; if narrowband resources are not scheduled in some time slots, during the broadband scheduling process, these narrowband resources are used to transmit broadband services; If broadband services have priority, then when the broadband is in a high-load state, broadband services are scheduled first; when the broadband load is not high, narrowband services are still scheduled first to avoid the situation where the remaining resources after scheduling broadband first are not within the narrowband frequency band and cannot be shared with the narrowband; Some reference signals in the broadband cell are configured in the broadband transmission mode. Such signals cannot avoid the narrowband frequency band interval during the scheduling process. For such signals, the broadband cell needs to notify the underlying processing unit at the corresponding time-frequency domain position to perform puncturing processing at the resource positions with conflicts, or during the initial configuration phase, perform conflict avoidance through the symbols reserved on the narrowband special subframe.

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