Bandwidth allocation method, device and base station based on dynamic spectrum sharing

Abstract

The present disclosure proposes a bandwidth allocation method, device and base station based on dynamic spectrum sharing, which relates to the field of mobile communication technology. The present disclosure provides a bandwidth allocation method based on DSS, including: when the NR terminal adopts the NR full bandwidth mode, sending a first channel state information reference signal CSI-RS measurement signal for the full bandwidth, and obtaining a first channel quality indication CQI; determining the transmission rate in the full bandwidth according to the first CQI as the first rate; sending a second CSI-RS measurement signal for the NR exclusive frequency band, and obtaining a second CQI; determining the transmission rate in the NR exclusive frequency band according to the second CQI as the second rate; when the second rate is greater than or equal to a first predetermined ratio of the first rate, sending a first switching information to the NR terminal, so that the NR terminal switches to the NR exclusive frequency band mode. Through such a method, the adaptive adjustment capability of bandwidth allocation is improved, and the service performance for the terminal is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of mobile communication technology, and in particular to a bandwidth allocation method, device and base station based on dynamic spectrum sharing. Background Art

[0002] In order to achieve the goal of smooth evolution from 4G to 5G, operators use the strategy of 4G and 5G dynamic spectrum sharing at the 2.1GHz frequency to balance 4G and 5G capacity, use a large 40MHz bandwidth, give full play to the 2.1GHz coverage advantage, and realize the basic coverage layer.

[0003] 40M DSS (Dynamic Spectrum Sharing) technology adopts the spectrum allocation mode of 40M NR (New Radio) + 20M LTE (Long Term Evolution), of which 20M is the shared area between LTE and NR). At present, most manufacturers implement solutions to schedule NR terminals with the largest possible bandwidth, so that NR terminals can schedule 40MHz bandwidth resources as much as possible. Summary of the invention

[0004] One purpose of the present disclosure is to improve the adaptive adjustment capability of bandwidth allocation under DSS and improve the service performance for terminals.

[0005] According to one aspect of some embodiments of the present disclosure, a DSS-based bandwidth allocation method is proposed, including: when the communication mode of the NR terminal is the NR full bandwidth mode, sending a first CSI-RS (Channel State Information-Reference Signal) measurement signal for the full bandwidth, and obtaining a first CQI (Channel Quality Indication) fed back by the NR terminal; determining a transmission rate in the full bandwidth as a first rate according to the first CQI; sending a second CSI-RS measurement signal for the NR exclusive frequency band, and obtaining a second CQI reported by the NR terminal; determining a transmission rate in the NR exclusive frequency band as a second rate according to the second CQI; and when the second rate is greater than or equal to a first predetermined ratio of the first rate, sending first switching information to the NR terminal, so that the NR terminal switches from the NR full bandwidth mode to the NR exclusive frequency band mode according to the first switching information.

[0006] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when the communication mode of the NR terminal is the NR exclusive frequency band mode, sending a CSI-RS measurement signal for the NR exclusive frequency band, and obtaining a third CQI reported by the NR terminal; determining the transmission rate at the full bandwidth under the third CQI as the third rate; when the third rate is greater than or equal to a second predetermined ratio of the second rate, sending second switching information to the NR terminal, so that the NR terminal switches from the NR exclusive frequency band mode to the NR full bandwidth mode according to the second switching information.

[0007] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when the communication mode of the NR terminal is the NR full bandwidth mode, obtaining RSRP (Reference Signal Receiving Power) information reported by the terminal; comparing the RSRP and the first CQI with the corresponding thresholds respectively; if the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold, performing an operation of determining the transmission rate at the full bandwidth according to the first CQI.

[0008] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: if the RSRP is less than or equal to the RSRP threshold, or the first CQI is greater than or equal to the CQI threshold, then after waiting for a predetermined period of time, RSRP information and the first CQI are obtained, and the operation of comparing the RSRP and the first CQI with the corresponding thresholds is performed, respectively, until the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold.

[0009] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when sending first switching information to the terminal, switching to use the NR exclusive frequency band to send a downlink signal of the current service to the terminal.

[0010] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when sending second switching information to the terminal, switching to using NR full bandwidth to send a downlink signal of the current service to the terminal.

[0011] In some embodiments, the value range of the first predetermined ratio is [0.9, 1].

[0012] In some embodiments, the value range of the second predetermined ratio is [1.2, 1.8].

[0013] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: receiving access information from an NR terminal; if the NR terminal supports the NR full bandwidth mode and the shared frequency band of LTE and NR is unloaded, sending full bandwidth mode setting information to the NR terminal so that the NR terminal adopts the NR full bandwidth mode.

[0014] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when the second rate is less than a first predetermined proportion of the first rate, maintaining the NR terminal in NR full bandwidth mode, and maintaining the use of NR full bandwidth to send the downlink signal of the current service to the NR terminal.

[0015] In some embodiments, the bandwidth allocation method based on dynamic spectrum sharing also includes: when the third rate is less than a second predetermined proportion of the second rate, maintaining the NR terminal in the NR exclusive frequency band mode, and maintaining the use of the NR exclusive frequency band to send the downlink signal of the current service to the NR terminal.

[0016] According to one aspect of some embodiments of the present disclosure, a bandwidth allocation device is proposed, including: a first CQI acquisition unit, configured to send a first CSI-RS measurement signal for the full bandwidth and obtain a first CQI fed back by the NR terminal when the communication mode of the NR terminal is the NR full bandwidth mode; a first rate determination unit, configured to determine the transmission rate in the full bandwidth according to the first CQI as the first rate, triggering a second CQI acquisition unit; the second CQI acquisition unit is configured to send a second CSI-RS measurement signal for the NR exclusive frequency band, and obtain a second CQI reported by the NR terminal, triggering the second rate determination unit; the second rate determination unit is configured to determine the transmission rate in the NR exclusive frequency band according to the second CQI as the second rate, triggering a switching unit; the switching unit is configured to send first switching information to the NR terminal when the second rate is greater than or equal to a first predetermined ratio of the first rate, so that the NR terminal switches from the NR full bandwidth mode to the NR exclusive frequency band mode according to the first switching information.

[0017] In some embodiments, the bandwidth allocation device also includes: a third CQI acquisition unit, configured to send a CSI-RS measurement signal for the NR exclusive frequency band and obtain a third CQI reported by the NR terminal when the communication mode of the NR terminal is the NR exclusive frequency band mode; a third rate determination unit, configured to determine the transmission rate at the full bandwidth under the third CQI as the third rate; the switching unit is also configured to send second switching information to the NR terminal when the third rate is greater than or equal to a second predetermined ratio of the second rate, so that the NR terminal switches from the NR exclusive frequency band mode to the NR full bandwidth mode according to the second switching information.

[0018] In some embodiments, the bandwidth allocation device also includes: an RSRP acquisition unit, configured to obtain the reference signal received power RSRP information reported by the terminal when the communication mode of the NR terminal is the NR full bandwidth mode; an activation unit, configured to compare the RSRP obtained by the RSRP acquisition unit and the first CQI obtained by the first CQI acquisition unit with the corresponding thresholds respectively; if the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold, the first rate unit is activated.

[0019] According to one aspect of some embodiments of the present disclosure, a bandwidth allocation device is proposed, including: a memory; and a processor coupled to the memory, the processor being configured to execute any one of the above bandwidth allocation methods based on dynamic spectrum sharing based on instructions stored in the memory.

[0020] According to one aspect of some embodiments of the present disclosure, a non-transitory computer-readable storage medium is provided, on which computer program instructions are stored, and when the instructions are executed by a processor, the steps of executing any one of the bandwidth allocation methods based on dynamic spectrum sharing described above are implemented.

[0021] According to one aspect of some embodiments of the present disclosure, a base station is proposed, comprising: any one of the bandwidth allocation devices described above; and an antenna configured to send downlink signals and receive uplink signals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present disclosure. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0023] Figure 1 The flowcharts are of some embodiments of the DSS-based bandwidth allocation method disclosed in the present invention.

[0024] Figure 2 Flow charts of other embodiments of the DSS-based bandwidth allocation method disclosed in the present invention.

[0025] Figure 3 Flowcharts of some further embodiments of the DSS-based bandwidth allocation method disclosed in the present invention.

[0026] Figure 4 It is a schematic diagram of some embodiments of the bandwidth allocation device disclosed in the present invention.

[0027] Figure 5 It is a schematic diagram of some embodiments of the bandwidth allocation device disclosed in the present invention.

[0028] Figure 6 It is a schematic diagram of some embodiments of the bandwidth allocation device disclosed in the present invention.

[0029] Figure 7 Schematic diagrams of some embodiments of the base station disclosed herein. DETAILED DESCRIPTION

[0030] The technical solution of the present disclosure is further described in detail below through the accompanying drawings and embodiments.

[0031] The inventors found that the 20M bandwidth of the LTE and NR shared frequency band will be interfered by CRS from neighboring cells, resulting in poor channel quality and increased bit error rate when the NR terminal schedules 40M bandwidth, which in turn leads to MCS (Modulation and Coding Scheme) degradation and a significant drop in terminal rate, which may even drop to a level lower than that of the NR exclusive bandwidth that only schedules 20M. Such a situation may lead to disadvantages such as reduced performance of 5G networks, waste of spectrum resources, and increased power consumption of NR terminals.

[0032] The flowcharts of some embodiments of the DSS-based bandwidth allocation method of the present disclosure are as follows: Figure 1 As shown, steps 131 to 136 are included.

[0033] In step 131, when the communication mode of the NR terminal is the NR full bandwidth mode, the base station sends a first CSI-RS measurement signal for the full bandwidth (such as 40M bandwidth) to the NR terminal, and obtains the first CQI fed back by the NR terminal.

[0034] In step 132, a transmission rate in the full bandwidth is determined according to the first CQI as a first rate. In some embodiments, the first rate X is determined according to the first CQI and the number of RBs (Resource Blocks) in the full bandwidth.

[0035] In step 133, a second CSI-RS measurement signal for the NR exclusive frequency band (such as a 20M bandwidth not allocated to LTE) is sent, and a second CQI reported by the NR terminal is obtained.

[0036] In step 134, a transmission rate in the NR exclusive frequency band is determined according to the second CQI as the second rate. In some embodiments, the second rate Y is determined according to the second CQI and the number of RBs in the NR exclusive frequency band.

[0037] In step 135, it is determined whether the second rate Y ≥ a first predetermined ratio c of the first rate X. If Y ≥ cX, step 136 is performed. In some embodiments, if Y < cX, step 137 is performed. In some embodiments, the first predetermined ratio can take any value between 0.9 and 1.

[0038] In step 136, first switching information is sent to the NR terminal, and the NR terminal that receives the first switching information switches from the NR full bandwidth mode to the NR exclusive frequency band mode. In some embodiments, the base station switches to use the NR exclusive frequency band to send a downlink signal of the current service to the terminal, thereby maintaining synchronization with the terminal and avoiding service interruption.

[0039] Based on the method in the above embodiment, when the rate of the NR exclusive frequency band accounts for the rate of the full bandwidth frequency band and reaches a threshold, and the rate of the 20M bandwidth reaches more than 90%-100% of the large bandwidth, it is possible to switch to using only the NR exclusive frequency band for downlink transmission to the terminal, thereby avoiding unnecessary burdens on the terminal and the network due to a small amount of frequency increase, improving the adaptive adjustment capability of bandwidth allocation, and improving service performance for the terminal.

[0040] In some embodiments, Figure 1 As shown, the bandwidth allocation method based on DSS may further include step 137. In step 137, the NR terminal is kept in NR full bandwidth mode, and the downlink signal of the current service is sent to the NR terminal using NR full bandwidth, so as to avoid the impact of bandwidth detection and allocation operations on user use. In some embodiments, after waiting for a set time length, it is also possible to return to step 131, so as to facilitate timely response to real-time changes in the network and further improve the adaptive adjustment capability.

[0041] In some embodiments, Figure 2 As shown, the DSS-based bandwidth allocation method of the present disclosure may further include steps 241 to 244. In some embodiments, step 241 may be the operation after step 136 above.

[0042] In step 241, the communication mode of the NR terminal is the NR exclusive frequency band mode. The base station sends a CSI-RS measurement signal for the NR exclusive frequency band to the NR terminal, and obtains the third CQI reported by the NR terminal.

[0043] In step 242, a transmission rate at full bandwidth under the third CQI is determined according to the third CQI as a third rate Z. In some embodiments, the third rate may be determined according to the third CQI and the number of RBs that can be allocated to the terminal under the full bandwidth.

[0044] In step 243, it is determined whether the third rate Z is greater than or equal to a second predetermined ratio d of the second rate Y. If Z≥dY, step 244 is performed. In some embodiments, if Z<dY, step 245 is performed. In some embodiments, the second predetermined ratio can take any value from 1.2 to 1.8.

[0045] In step 244, the base station sends second handover information to the NR terminal, and the NR terminal that receives the second handover information switches from the NR full-bandwidth mode to the NR exclusive frequency band mode. In some embodiments, the base station switches to using the NR full-bandwidth frequency band to send the downlink signal of the current service to the terminal, so as to maintain the synchronization of the interaction with the terminal and avoid service interruption.

[0046] Based on the method in the above embodiments, when the rate gain brought by using the NR full bandwidth is greater than the threshold compared with using the NR exclusive frequency band, it is possible to timely switch to the mode using the NR full bandwidth, so as to improve the effective application of frequency band resources and further improve the adaptive adjustment ability.

[0047] In some embodiments, as Figure 2 shown, the bandwidth allocation method based on DSS may further include step 245: keeping the NR terminal in the NR exclusive frequency band mode and keeping using the NR exclusive frequency band to send the downlink signal of the current service to the NR terminal, so as to avoid the impact of bandwidth detection and allocation operations on user use. In some embodiments, after waiting for a set time length, it is also possible to return to step 241, so as to facilitate timely response to the real-time changes of the network and further improve the adaptive adjustment ability.

[0048] In some embodiments, for a terminal in the NR full-bandwidth mode, the base station can obtain the first CQI and RSRP reported by the terminal at a predetermined frequency and compare the first CQI and RSRP with the corresponding thresholds respectively. If RSRP ≤ RSRP threshold a, or the first CQI ≥ CQI threshold b, it means that there is no too much impact caused by the co-frequency interference of neighboring cells, and the first CQI and RSRP can be detected at a predetermined frequency until RSRP > a and the first CQI < b. When RSRP > a and the first CQI < b, it means that the current signal strength is good enough, but the channel quality is poor, which is presumably caused by interference, and the operation in step 132 in Figure 1 is started to calculate the first rate X. In some embodiments, a and b can be set and adjusted according to requirements.

[0049] Through such a method, it is possible to first judge whether to start the handover operation based on the terminal rate by comparing CQI and RSRP, reduce the amount of calculation, avoid unnecessary detection and calculation, and reduce the processing pressure of the base station.

[0050] The flowchart of some other embodiments of the DSS-based bandwidth allocation method of the present disclosure is as Figure 3 shown.

[0051] In step 311, access information from the NR terminal is received. In some embodiments, the access information may include the capability information of the terminal, such as whether the terminal supports NR full-bandwidth communication.

[0052] In step 312, if the NR terminal supports the NR full bandwidth mode and the shared frequency band of the current LTE and NR is idle, then step 313 is executed. In some embodiments, if the NR terminal does not support the NR full bandwidth mode, or the shared frequency band of the current LTE and NR is already occupied by LTE services, the terminal can be configured to use the NR exclusive frequency band mode and does not participate in Figure 3 the subsequent processes therein.

[0053] In step 313, send the full bandwidth mode setting information to the NR terminal, and send the downlink signal to the NR terminal using the full bandwidth frequency band resources.

[0054] In step 321, the base station sends the first CSI-RS measurement signal for the full bandwidth to the NR terminal, and obtains the first CQI and RSRP fed back by the NR terminal.

[0055] In step 322, it is judged whether RSRP > RSRP threshold and the first CQI < CQI threshold. If RSRP > RSRP threshold and the first CQI < CQI threshold, then step 331 is executed; otherwise, wait for a predetermined duration and return to step 321.

[0056] In step 331, determine the transmission rate in the full bandwidth according to the first CQI as the first rate X.

[0057] In step 332, the base station switches to send the second CSI-RS measurement signal for the NR exclusive frequency band to the NR terminal, and obtains the second CQI reported by the NR terminal.

[0058] In step 333, determine the transmission rate in the NR exclusive frequency band according to the second CQI as the second rate Y.

[0059] In step 334, it is judged whether Y ≥ cX, where c is a first predetermined ratio, and the value can be set or adjusted as needed. In some embodiments, 0.9 ≤ c ≤ 1. If Y ≥ cX, then step 335 is executed; otherwise, return to execute step 321

[0060] In step 335, the base station sends the first handover information to the NR terminal so that the NR terminal can switch from the NR full bandwidth mode to the NR exclusive frequency band mode. The base station also switches to send the information of the existing services to the terminal through the NR exclusive frequency band. Further, step 341 is executed.

[0061] In step 341, the base station switches to send the CSI-RS measurement signal for the NR exclusive frequency band to the NR terminal, and obtains the third CQI reported by the NR terminal.

[0062] In step 342, a transmission rate at the full bandwidth under the third CQI is determined as a third rate Z.

[0063] In step 343, it is determined whether Z≥dY, where d is a second predetermined ratio, and the value can be set or adjusted as needed. In some embodiments, 1.2≤d≤1.8.

[0064] If Z≥dY, execute step 344; otherwise, return to execute step 341, re-acquire the third CQI, and determine Z, so as to timely obtain the interference situation of the shared frequency band between NR and LTE, timely discover that the rate gain brought by the shared frequency band meets the demand and make corresponding responses, thereby improving the utilization of frequency band resources and improving transmission efficiency.

[0065] In step 344, second switching information is sent to the NR terminal so that the NR terminal switches from the NR exclusive frequency band mode to the NR full bandwidth mode according to the second switching information. The base station also switches to send information about existing services to the terminal through the NR full bandwidth. In some embodiments, at this time, the NR terminal adopts the NR full bandwidth mode and executes step 321.

[0066] The method in the above embodiment, while scheduling more bandwidth for the terminal as much as possible to improve transmission efficiency, when the performance of the NR terminal scheduling the full bandwidth is poor, the base station will only schedule the spectrum resources in the NR exclusive area to the NR terminal, and leave the shared area to the LTE terminal, thereby not only improving the network performance and spectrum efficiency, but also avoiding scheduling resources with too low energy efficiency ratio, reducing terminal energy consumption, and improving the average throughput rate of the NR terminal.

[0067] Schematic diagrams of some embodiments of the bandwidth allocation device 40 of the present disclosure are as follows: Figure 4 shown.

[0068] The first CQI acquisition unit 401 can send a first CSI-RS measurement signal for the full bandwidth (40M bandwidth) to the NR terminal when the communication mode of the NR terminal is the NR full bandwidth mode, and obtain the first CQI fed back by the NR terminal.

[0069] The first rate determination unit 402 can determine the transmission rate in the full bandwidth according to the first CQI as the first rate. In some embodiments, the first rate X is determined according to the first CQI and the number of RBs in the full bandwidth.

[0070] The second CQI acquisition unit 403 can send a second CSI-RS measurement signal for the NR exclusive frequency band (such as a 20M bandwidth not allocated to LTE) and obtain the second CQI reported by the NR terminal.

[0071] The second rate determination unit 404 can determine the transmission rate in the NR exclusive frequency band according to the second CQI as the second rate.

[0072] The switching unit 405 can send the first switching information to the NR terminal when the second rate Y is greater than or equal to the first predetermined ratio c of the first rate X, so that the NR terminal that receives the first switching information switches from the NR full bandwidth mode to the NR exclusive frequency band mode. In some embodiments, the switching unit 405 can also control the base station to switch to use the NR exclusive frequency band to send the downlink signal of the current service to the terminal, thereby maintaining the synchronization of interaction with the terminal and avoiding service interruption.

[0073] The bandwidth allocation device in the above embodiment can switch to using only the NR exclusive frequency band for downlink transmission to the terminal when the rate of the NR exclusive frequency band accounts for the rate of the full bandwidth frequency band and reaches a threshold, and the rate of the 20M bandwidth reaches more than 90%-100% of the large bandwidth, thereby avoiding unnecessary burdens on the terminal and the network caused by a small amount of frequency increase, improving the adaptive adjustment capability of bandwidth allocation, and improving the service performance for the terminal.

[0074] In some embodiments, Figure 4 As shown, the bandwidth allocation device 40 may further include a third CQI acquisition unit 406 and a third rate determination unit 407 .

[0075] The third CQI acquisition unit 406 can send a CSI-RS measurement signal for the NR exclusive frequency band to the NR terminal, and obtain the third CQI reported by the NR terminal.

[0076] The third rate determination unit 407 can determine the transmission rate at the full bandwidth under the third CQI according to the third CQI as the third rate Z.

[0077] The switching unit 405 can also send second switching information to the NR terminal when the third rate Z is greater than or equal to the second predetermined ratio d of the second rate Y, so that the NR terminal that receives the second switching information switches from the NR full bandwidth mode to the NR exclusive frequency band mode. In some embodiments, the switching unit 405 can also control the base station to switch to use the NR full bandwidth frequency band to send the downlink signal of the current service to the terminal, thereby maintaining synchronization with the terminal interaction and avoiding service interruption.

[0078] The device in the above embodiment can switch to the mode of using NR full bandwidth in time when the rate gain brought by using NR full bandwidth compared to using NR exclusive frequency band is greater than the threshold, thereby improving the effective application of frequency band resources and further improving the adaptive adjustment capability.

[0079] In some embodiments, the bandwidth allocation device 40 may further include an RSRP acquisition unit 408 and an activation unit 409.

[0080] The RSRP acquisition unit 408 is capable of acquiring the RSRP reported by the NR terminal at a predetermined frequency. In some embodiments, the data acquisition operations of the first CQI acquisition unit and the RSRP acquisition unit may be performed at a predetermined frequency and provided to the activation unit 409.

[0081] The activation unit 409 is capable of comparing the first CQI and the RSRP with corresponding thresholds respectively. When the RSRP ≤ RSRP threshold a, or the first CQI ≥ CQI threshold b, the first CQI acquisition unit 401 and the RSRP acquisition unit 408 continue to acquire the first CQI and the RSRP at a predetermined frequency. When the RSRP > a and the first CQI < b, the activation unit 409 triggers the first rate determination unit 402 to start performing operations.

[0082] The bandwidth allocation device in the above embodiments can first determine whether to start the handover operation based on the terminal rate by comparing the CQI and the RSRP, reducing the amount of computation, avoiding unnecessary detections and computations, and reducing the processing pressure.

[0083] A schematic structural diagram of an embodiment of the bandwidth allocation device of the present disclosure is as Figure 5 shown. The bandwidth allocation device includes a memory 501 and a processor 502. Among them: The memory 501 may be a disk, a flash memory, or any other non-volatile storage medium. The memory is used to store the instructions in the corresponding embodiments of the DSS-based bandwidth allocation method described above. The processor 502 is coupled to the memory 501 and may be implemented as one or more integrated circuits, such as a microprocessor or a microcontroller. The processor 502 is used to execute the instructions stored in the memory, which can avoid unnecessary burdens on the terminal and the network caused by a small amount of frequency increase and improve the adaptive adjustment ability of bandwidth allocation.

[0084] In one embodiment, it may also be as Figure 6 shown. The bandwidth allocation device 600 includes a memory 601 and a processor 602. The processor 602 is coupled to the memory 601 through the BUS bus 603. The bandwidth allocation device 600 may also be connected to an external storage device 605 through a storage interface 604 to call external data, and may also be connected to a network or another computer system (not shown) through a network interface 606. Details are not described here.

[0085] In this embodiment, by storing data instructions in the memory and then processing the above instructions by the processor, it is possible to avoid unnecessary burdens on the terminal and the network caused by a small amount of frequency increase and improve the adaptive adjustment ability of bandwidth allocation.

[0086] In another embodiment, a computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the DSS-based bandwidth allocation method. It should be understood by those skilled in the art that the embodiments of the present disclosure may be provided as methods, devices, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transitory storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0087] Schematic diagrams of some embodiments of the base station disclosed in the present invention are as follows Figure 7 shown.

[0088] The bandwidth allocation device 71 may be any one of the ones mentioned above.

[0089] One or more antennas 72 are capable of transmitting downlink signals and receiving uplink signals.

[0090] The base station in the above embodiment can switch to using only the NR exclusive frequency band for downlink transmission to the terminal when the rate of the NR exclusive frequency band accounts for the rate of the full bandwidth frequency band and reaches a threshold, and the rate of the 20M bandwidth reaches more than 90%-100% of the large bandwidth, thereby avoiding unnecessary burdens on the terminal and the network caused by a small amount of frequency increase, improving the adaptive adjustment capability of bandwidth allocation, and improving service performance for the terminal.

[0091] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks 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 produce 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 process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising 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.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions 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.

[0094] So far, the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0095] The method and apparatus of the present disclosure may be implemented in many ways. For example, the method and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above, unless otherwise specifically stated. In addition, in some embodiments, the present disclosure may also be implemented as a program recorded in a recording medium, which includes machine-readable instructions for implementing the method according to the present disclosure. Therefore, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present disclosure, which should be included in the scope of the technical solution for protection of the present disclosure.

Claims

1. A bandwidth allocation method based on dynamic spectrum sharing, comprising: When the communication mode of the new radio NR terminal is NR full bandwidth mode, Sending a first CSI-RS measurement signal for the full bandwidth, and obtaining a first channel quality indication CQI fed back by the NR terminal; Determine, according to the first CQI, a transmission rate at the full bandwidth as a first rate; Sending a second CSI-RS measurement signal for the NR exclusive frequency band, and obtaining a second CQI reported by the NR terminal; Determine, according to the second CQI, a transmission rate in the NR exclusive frequency band as a second rate; When the second rate is greater than or equal to a first predetermined ratio of the first rate, sending first switching information to the NR terminal, so that the NR terminal switches from the NR full bandwidth mode to the NR exclusive frequency band mode according to the first switching information; In the case of sending the first switching information to the terminal, switching to use the NR exclusive frequency band to send a downlink signal of the current service to the terminal; When the second rate is less than a first predetermined ratio of the first rate, the NR terminal is kept in the NR full bandwidth mode, and the downlink signal of the current service is sent to the NR terminal using the NR full bandwidth.

2. The method according to claim 1, further comprising: When the communication mode of the NR terminal is the NR exclusive frequency band mode, sending a CSI-RS measurement signal for the NR exclusive frequency band, and obtaining a third CQI reported by the NR terminal; Determine a transmission rate at full bandwidth under the third CQI as a third rate; When the third rate is greater than or equal to a second predetermined ratio of the second rate, second switching information is sent to the NR terminal so that the NR terminal switches from the NR exclusive frequency band mode to the NR full bandwidth mode according to the second switching information.

3. The method according to claim 1, further comprising: When the communication mode of the NR terminal is the NR full bandwidth mode, obtaining reference signal received power RSRP information reported by the terminal; Comparing the RSRP and the first CQI with corresponding thresholds respectively; If the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold, the operation of determining the transmission rate at the full bandwidth according to the first CQI is performed.

4. The method according to claim 3, further comprising: If the RSRP is less than or equal to the RSRP threshold, or the first CQI is greater than or equal to the CQI threshold, after waiting for a predetermined period of time, the RSRP information and the first CQI are obtained, and the operation of comparing the RSRP and the first CQI with the corresponding thresholds is performed, until the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold.

5. The method according to claim 2, further comprising: When the second switching information is sent to the terminal, the downlink signal of the current service is sent to the terminal using the NR full bandwidth.

6. The method according to claim 1, wherein: The value range of the first predetermined ratio is [0.9, 1].

7. The method according to claim 2, wherein: The value range of the second predetermined ratio is [1.2, 1.8].

8. The method according to claim 1, further comprising: Receiving access information from the NR terminal; If the NR terminal supports the NR full bandwidth mode and the shared frequency band of LTE and NR is unloaded, full bandwidth mode setting information is sent to the NR terminal so that the NR terminal adopts the NR full bandwidth mode.

9. The method according to claim 2, further comprising: When the third rate is less than a second predetermined ratio of the second rate, the NR terminal is kept in the NR exclusive frequency band mode, and the NR exclusive frequency band is used to send the downlink signal of the current service to the NR terminal.

10. A bandwidth allocation device, comprising: A first channel quality indication CQI acquisition unit is configured to send a first CSI-RS measurement signal for the full bandwidth when the communication mode of the new radio interface NR terminal is the NR full bandwidth mode, and acquire a first channel quality indication CQI fed back by the NR terminal; A first rate determining unit is configured to determine a transmission rate at a full bandwidth according to the first CQI as a first rate, and trigger a second CQI acquiring unit; The second CQI acquisition unit is configured to send a second CSI-RS measurement signal for the NR exclusive frequency band, and obtain a second CQI reported by the NR terminal, triggering a second rate determination unit; The second rate determination unit is configured to determine, according to the second CQI, a transmission rate in the NR exclusive frequency band as a second rate, to trigger the switching unit; The switching unit is configured to, when the second rate is greater than or equal to a first predetermined ratio of the first rate, send first switching information to the NR terminal, so that the NR terminal switches from the NR full bandwidth mode to the NR exclusive frequency band mode according to the first switching information; when sending the first switching information to the terminal, switch to using the NR exclusive frequency band to send the downlink signal of the current service to the terminal; when the second rate is less than a first predetermined ratio of the first rate, keep the NR terminal in the NR full bandwidth mode, and keep using the NR full bandwidth to send the downlink signal of the current service to the NR terminal.

11. The apparatus according to claim 10, further comprising: A third CQI acquisition unit is configured to send a CSI-RS measurement signal for the NR exclusive frequency band when the communication mode of the NR terminal is the NR exclusive frequency band mode, and acquire a third CQI reported by the NR terminal; A third rate determination unit is configured to determine a transmission rate at full bandwidth under the third CQI condition as a third rate; The switching unit is also configured to send second switching information to the NR terminal when the third rate is greater than or equal to a second predetermined ratio of the second rate, so that the NR terminal switches from the NR exclusive frequency band mode to the NR full bandwidth mode according to the second switching information.

12. The apparatus according to claim 10, further comprising: A reference signal received power RSRP acquisition unit is configured to obtain reference signal received power RSRP information reported by the terminal when the communication mode of the NR terminal is the NR full bandwidth mode; An activation unit is configured to compare the RSRP acquired by the RSRP acquisition unit and the first CQI acquired by the first CQI acquisition unit with corresponding thresholds respectively; if the RSRP is greater than the RSRP threshold and the first CQI is less than the CQI threshold, the first rate determination unit is activated.

13. A bandwidth allocation device, comprising: Memory; as well as A processor coupled to the memory, the processor being configured to execute the method according to any one of claims 1 to 9 based on instructions stored in the memory.

14. A non-transitory computer-readable storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 9.

15. A base station, comprising: The bandwidth allocation device according to any one of claims 10 to 13; and The antenna is configured to send downlink signals and receive uplink signals.

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