CN113692027A - Switching method and base station - Google Patents

Switching method and base station Download PDF

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Publication number
CN113692027A
CN113692027A CN202110976303.7A CN202110976303A CN113692027A CN 113692027 A CN113692027 A CN 113692027A CN 202110976303 A CN202110976303 A CN 202110976303A CN 113692027 A CN113692027 A CN 113692027A
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China
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base station
target base
group
serving base
scheduling
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Chinese (zh)
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武传国
是元吉
谭定富
唐兵
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Shanghai Qingkun Information Technology Co Ltd
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Shanghai Qingkun Information Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application provides a switching method, which comprises the following steps: a service base station divides a plurality of accessed User Equipment (UE) into M groups; for the M-th group of the M groups, if there is at least LmThe UE satisfies the cell switching condition, and the serving base station combines the N of the m-th groupmScheduling information of the UE is transmitted to the target base station, N of the m-th groupmThe scheduling information of each UE is used for the target base station to perform pre-scheduling; the serving base station sends N of the m-th groupmWhen the UE in each group meets the cell switching condition, the UE and the target base station are subjected to pre-scheduling interactive processing, and then the UE in the group meeting the switching condition is subjected to switching processing, so that the success rate of switching in a high-speed moving scene is ensured, and the user experience is improved.

Description

Switching method and base station
Technical Field
The present application relates to the field of communications technologies, and in particular, to a handover method and a base station.
Background
With the development of wireless communication technology, the application of wireless networks is more and more extensive, and wireless access technology is continuously evolving. For example, the fourth Generation (4G) communication technology has evolved to the fifth Generation (5G) communication technology, or New Radio (NR) communication technology, and is beginning to be commercialized. In order to meet the requirements of various services of everywhere, the wireless communication network is developed in urban environment, and people can conveniently access the wireless communication network on high-speed rails.
In a high-speed rail scene, there is a situation that User Equipment (UE) on a whole train initiates handover in a centralized manner, and at this time, a base station needs to process access, resource scheduling, and the like of a large amount of UEs in a centralized manner, and a bottleneck often exists in processing capacity, which results in a high handover failure rate. Therefore, in the current high-speed rail private network scene, when the passenger uses wireless communication technologies such as 4G and 5G on the high-speed rail, the situations of call drop, line drop and the like are frequently encountered, and the user experience is greatly influenced.
Disclosure of Invention
In view of this, the present application provides a handover method and a base station to ensure a success rate of handover and improve user experience.
In one implementation, the present application provides a handover method, in which a serving base station divides a plurality of User Equipments (UEs) that are accessed into M groups; for the M-th group of the M groups, if there is at least LmThe UE satisfies the cell switching condition, and the serving base station combines the N of the m-th groupmThe scheduling information of each UE is sent to a target base station; n of the m-th groupmThe scheduling information of each UE is used for the target base station to perform pre-scheduling; the serving base station sends N of the m-th groupmAnd switching the UE to the target base station.
Optionally, the serving base station traverses the M groups of UEs, and performs the above processing on each group of UEs meeting the cell handover condition.
Optionally, when a difference between the signal quality metric of the target base station reported by the UE and the signal quality metric of the serving base station reported by the UE is greater than or equal to a preset threshold T of the signal quality metric, it is determined that the UE satisfies a cell handover condition, where the signal quality metric includes at least one of: reference signal received power, RSRP, reference signal received quality, RSRQ, and signal-to-noise ratio, SNR.
Optionally, the serving base station obtains reference signal received power RSRP of each UE of the multiple UEs and divides the multiple UEs into the M groups according to M preset continuous RSRP interval ranges.
Optionally, the number of UEs in each of the M groups that satisfy the handover condition may be set to different values according to the RSRP interval range to which each group belongs.
In another implementation, the present application further provides a serving base station, which includes a unit for implementing the above network handover method, where each step may be implemented by a separate unit, or all or part of the units may be integrated together. These units may be logic units, stored in the form of software or hardware, for example, in a memory in the form of a program, which is called by a processor to implement the functions of the respective units; as another example, the instructions may be implemented in hardware circuitry, such as may be implemented by logic gates.
In one example, the present application provides a serving base station comprising: a processing unit and a transceiver unit; the processing unit is used for dividing a plurality of accessed User Equipment (UE) into M groups; also for the M-th group of the M groups, if there is at least LmEach UE satisfies the cell switching condition and sends the N of the m-th groupmThe scheduling information of each UE is sent to the target base station through the transceiving unit; the processing unit is also used for dividing the m-th group of NmAnd switching the UE to the target base station.
Optionally, the processing unit traverses the M groups of divided UEs, and performs the above processing on each group of UEs meeting the cell handover condition.
Optionally, when a difference between the signal quality metric of the target base station reported by the UE and the signal quality metric of the serving base station reported by the UE is greater than or equal to a preset threshold T of the signal quality metric, it is determined that the UE satisfies a cell handover condition, where the signal quality metric includes at least one of: reference signal received power, RSRP, reference signal received quality, RSRQ, and signal-to-noise ratio, SNR.
Optionally, the processing unit obtains reference signal received power RSRP of each UE of the multiple UEs and divides the multiple UEs into the M groups according to M preset continuous RSRP interval ranges.
Optionally, the number of UEs in each of the M groups that satisfy the handover condition may be set to different values according to the RSRP interval range to which each group belongs.
In another example, the present application also provides a serving base station comprising a processor for invoking a program stored in a memory to implement the above handover method.
In yet another implementation, the present application further provides a storage medium having program code stored therein, which when called by a processor, causes the processor to implement the above handover method.
By the method, the service base station divides a plurality of accessed UE into a plurality of groups, and when the UE in each group meets the cell switching condition, the service base station performs pre-scheduling interactive processing with the target base station so as to perform switching processing on the grouped UE meeting the switching condition, thereby ensuring the success rate of switching in a high-speed moving scene and improving the user experience.
Drawings
The following description of specific embodiments of the present application will be made with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic diagram of a handover method according to an embodiment of the present application;
fig. 3 is a flowchart of a handover method according to an embodiment of the present application;
fig. 4 is a schematic diagram of a serving base station according to an embodiment of the present application;
fig. 5 is a schematic diagram of a serving base station according to an embodiment of the present application.
Detailed Description
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the present application, and that for a person skilled in the art, other drawings and other embodiments can be obtained from these drawings without inventive effort. For the sake of simplicity, the drawings only schematically show the parts relevant to the present application, and they do not represent the actual structure as a product.
Please refer to fig. 1, which is a schematic diagram of a communication system according to an embodiment of the present application. As shown in fig. 1, the communication system includes AN Access Network (AN) 110 and a Core Network (Core Network, CN)120, and a User Equipment (UE) 130 accesses to a wireless Network through the AN110 and communicates with other networks, such as a Data Network (Data Network), through the CN 120.
The AN may also be referred to as a Radio Access Network (RAN), and the device on the AN side may be referred to as AN device or a RAN device, and may also be referred to as a base station. The names of the different communication systems are different, for example, in a Long Term Evolution (LTE) system, the communication system may be referred to as an evolved Node B (eNB), and in a 5G system, the communication system may be referred to as a next generation Node B (gnb). AN apparatus may also be a Centralized Unit (CU), a Distributed Unit (DU), or include a CU and a DU.
In the communication system shown in fig. 1, AN110 includes AN apparatus 1 and AN apparatus 2. In one possible embodiment, the AN apparatus 1 is a serving base station of the UE, and the AN apparatus 2 is a target base station.
In a high-speed moving scene, such as a high-speed rail scene, when a wireless communication network is deployed, in order to avoid frequent handover of a UE between cells, a plurality of poles are generally combined into a super cell, and communication devices on different poles have the same physical layer cell ID in the super cell, so that the UE does not involve handover between cells when moving in the super cell. But the physical layer cell IDs are different between different super cells, so when the UE moves between super cells, handover between cells is involved.
For a high-speed rail scene, the base station accessed by the UE at present is a service base station, and the base station to be switched by the UE is a target base station. When inter-cell handover is performed, there may be a situation that the UE on the whole train initiates handover in a centralized manner, and at this time, the target base station needs to process access, resource scheduling, and the like of a large amount of UEs in a centralized manner, and the processing capability often has a bottleneck, resulting in a high handover failure rate.
The scheme of the invention converts the irregular and relatively uncontrollable centralized switching of a large number of UE in the whole train into grouping and performs relatively controllable pre-scheduling and switching on each group, thereby ensuring the success rate of switching in a high-speed moving scene and improving the user experience.
The scheme of the embodiment of the application is described below with reference to the attached drawings.
Please refer to fig. 2, which is a schematic diagram of a handover method according to an embodiment of the present disclosure. As shown in fig. 2, the method is performed by a serving base station, and includes the following steps:
s210: and dividing a plurality of accessed User Equipment (UE) into M groups.
The serving base station groups a plurality of UEs accessing the serving base station.
Optionally, the serving base station divides a distribution range of Reference Signal Receiving Power (Reference Signal Receiving Power, RSRP) values into M consecutive intervals in advance based on historical empirical data. It is understood that the length of each interval is not specifically limited in the embodiments of the present invention, and may be set and adjusted based on the historical data, and M is greater than or equal to 1.
Optionally, the serving base station performs RSRP measurement based on an uplink Demodulation Reference Signal (DMRS) or a channel Sounding Reference Signal (SRS) of the accessed UE, to obtain an RSRP value of each UE of the accessed multiple UEs.
Optionally, the UE measures to obtain RSRP according to signals such as a downlink Synchronization Signal Block (SSB), a downlink Channel State Information Reference Signal (CSI-RS), or a downlink DMRS, and reports the RSRP to the serving base station.
The service base station divides the plurality of UE into the M groups according to the preset M continuous RSRP interval ranges and the obtained RSRP value of each UE of the plurality of accessed UE.
Optionally, the serving base station may also divide the multiple accessed UEs into M groups according to the signal-to-noise ratio of the accessed UE.
S220: for the M-th group of said M groups, if there is at least LmEach UE satisfies the cell switching condition, and the service base station combines the N of the m-th groupmThe scheduling information of each UE is sent to the target base station.
In the m-th group having NmUE, for the m-th group, if there is at least LmIf each UE satisfies the cell switching condition, the serving BS will use the N of the m-th groupmThe scheduling information of each UE is sent to the target base station.
Optionally, LmAs an empirical value, it can be modified or adjusted based on actual needs.
Because each group has a large number of UEs, in order to reduce the calculation amount of the base station and ensure the accuracy of the switching judgment, the number L of the UEs satisfying the switching condition is set for the mth groupm。
Alternatively, the mth packet may be any one of the M packets. L corresponding to the m-th packetmThe setting may be made based on the section range in which the m-th packet is located, or may be preset to the same value.
Optionally, in one implementable method, the signal strength is the L of the packet xxL less than the weaker-signal packet yy. Packets with weaker signals more easily meet the handover requirements and therefore may lead to a better user experience.
Optionally, the serving base station may obtain a signal quality metric of the target base station reported by the UE and a signal quality metric of the serving base station reported by the UE, and if a difference between the signal quality metric of the target base station reported by the UE and the signal quality metric of the serving base station reported by the UE is greater than or equal to T, the serving base station determines that the UE satisfies the cell handover condition. For group m, if there is at least LmIf each UE satisfies the cell switching condition, the serving BS will use the N of the m-th groupmAll scheduling information of individual UETransmitting to the target base station, wherein NmGreater than or equal to Lm. Optionally, T is a preset value, which is a preset value corresponding to the signal quality metric, and it can be understood that T is not limited to more.
Optionally, the signal quality metric includes at least one of: RSRP of the base station, Reference Signal Receiving Quality (RSRQ) of the base station, and Signal to Noise Ratio (SNR) of the base station.
Optionally, the scheduling information includes at least one of Quality of Service (QoS), throughput, and time-frequency resource of the UE.
S230: the serving base station transmits the N of the m-th groupmAnd switching the UE to the target base station.
The target base station transmits N of the m-th group according to the received service base stationmAfter scheduling information of each UE, N for the m-th groupmUE prescheduling, i.e. N in the m-th groupmBefore each UE has not been handed over to the target base station, the target base station is N of the m-th groupmEach UE reserves scheduling resources, and optionally, the scheduling resources include time-frequency resources and the like.
And allocating resources such as time-frequency scheduling and the like to all the UE of the m-th group in the target base station in advance, thereby ensuring the rapid switching of all the UE in the m-th group.
After the prescheduling of the target base station is finished, the service base station enables the N of the mth groupmAnd switching the UE to the target base station.
Optionally, the serving base station sends the mth group of N to the target base stationmThe scheduling information of each UE can also indicate the N of the m group for the target base stationmAnd each UE carries out prescheduling.
Optionally, the target base station is aligned with N of the mth groupmAfter the UE pre-scheduling is finished, the target base station sends pre-scheduling finishing indication information to the service base station, and the service base station receives the pre-scheduling finishing indication information and then sends the N of the mth groupmAnd switching the UE to the target base station.
The above method is described for the mth packet of M packets, and it can be understood that the serving base station may traverse the M packets, and the above method is performed as long as there is a packet M satisfying the handover condition.
By the method, the service base station divides a plurality of accessed UE into a plurality of groups, and when the UE in each group meets the cell switching condition, the service base station performs pre-scheduling interactive processing with the target base station so as to perform switching processing on the grouped UE meeting the switching condition, thereby ensuring the success rate of switching and improving the user experience.
To further illustrate aspects of embodiments of the present application, reference is made to FIG. 3 for a detailed description. It should be noted that, in the embodiment shown in fig. 3, the same or similar contents as those in the embodiment shown in fig. 2 may refer to the detailed description in the embodiment shown in fig. 2, and are not repeated in the following.
Please refer to fig. 3, which is a flowchart illustrating a handover method according to an embodiment of the present disclosure. As shown in fig. 3:
the service base station divides a plurality of accessed User Equipment (UE) into M groups.
Specifically, the UE periodically measures a signal quality metric of the accessed serving base station. The UE periodically performs measurement of RSRP, RSRQ, SNR, etc. of the serving base station or access cell. Wherein, the default unit of the measurement result of RSRP can be dBm, and the default unit of the measurement result of RSRQ and SNR can be dB.
The service base station obtains an uplink measurement result of the accessed UE.
The serving base station may pre-divide a distribution range of the signal quality metric into consecutive M intervals based on the historical statistical information.
And according to the uplink measurement result of the accessed UE and the continuous M intervals divided in advance, the service base station divides the plurality of UEs accessed to the service base station into M groups.
Table 1 is an example of grouping based on RSRP, and it should be understood that this example does not set any limit to the embodiments of the present invention.
Table 1 grouping based on RSRP
Figure BDA0003227421520000081
Figure BDA0003227421520000091
A base station obtains RSRP based on uplink DMRS, SRS and other channels/signals, or UE measures and obtains RSRP according to downlink SSB, downlink CSI-RS, downlink DMRS and other signals and reports the RSRP to the base station, and performs RSRP measurement on all UEs (UEs accessing a network) in a train, and divides the UEs into M-6 groups (in practical cases, M may be other values), assuming that there are 28 UEs, the grouping situation is shown in table 1, where the 1 st group includes 5 UEs, the 2 nd group includes 5 UEs, the 3 rd group includes 5 UEs, the 4th group includes 5 UEs, the 5th group includes 5 UEs, and the 6 th group includes 3 UEs. It should be noted that the RSRP threshold ranges of different packets in table 1 are only one example, and may be adjusted according to historical experience in practical applications, and the number of UEs in different packets is determined according to actual measurement results.
For the M-th group of said M groups, if there is at least LmEach UE satisfies the cell switching condition, and the service base station combines the N of the m-th groupmThe scheduling information of each UE is sent to the target base station. Wherein the mth group is any one of the M groups.
The UE periodically measures signal quality metrics of neighboring base stations.
Specifically, the UE periodically measures RSRP, RSRQ, SNR, etc. of the target base station. Wherein, the default unit of the measurement result of RSRP can be dBm, and the default unit of the measurement result of RSRQ and SNR can be dB.
And comparing the signal quality measurement of the target base station with the signal quality measurement of the service base station, and judging whether the switching condition is met.
And if the difference value between the signal quality measurement of the target base station reported by the UE and the signal quality measurement of the serving base station reported by the UE is greater than or equal to T, the serving base station determines that the UE meets the cell switching condition.
Optionally, T is a preset value, which is a preset value corresponding to the signal quality metric, and the T may be adjusted based on network performance and other factors.
Optionally, the number L of UEs meeting handover for the mth groupmChanges or adjustments may be made based on actual network performance requirements.
In one example, for a single UE, the handover condition is that the RSRP of the target base station is higher than the RSRP of the serving base station by a preset threshold. For example, target base station RSRP — RSRP of serving base station >3 dB. Of course, the preset threshold in this example may be other values, and the present application is not limited thereto.
In another example, for a single UE, the handover condition is that the RSRQ of the target base station is higher than the RSRQ of the serving base station by a preset threshold. For example, RSRQ of the target base station — RSRQ of the serving base station >3 dB. Of course, the preset threshold in this example may be other values, and the present application is not limited thereto.
In yet another example, for a single UE, the handover condition is that the SNR of the target base station is above the SNR of the serving base station by a preset threshold. For example, the SNR of the target base station-the SNR of the serving base station >3 dB. Of course, the preset threshold in this example may be other values, and the present application is not limited thereto.
It is understood that the serving base station and the target base station can directly perform related information interaction through an Xn or NG interface, for example.
Optionally, for each group in the M groups, the number of UEs meeting handover may be set to the same value, or may be set to different values based on the interval range corresponding to each group. For example, in table 1, the number of UEs satisfying the handover condition may be smaller for group 1 than for group 2. The group 1 signal is weaker and the group 1 UE needs to be handed over to improve the user experience.
The target base station transmits N of the m-th group according to the received service base stationmAfter scheduling information of each UE, N for the m-th groupmUE prescheduling, i.e. N in the m-th groupmBefore each UE has not been handed over to the target base station, the target base station is N of the m-th groupmEach UE reserves scheduling resources, and optionally, the scheduling resources include time-frequency resources and the like.
Optionally, a serving base stationTransmitting the N of the mth group to the target base stationmScheduling information of each UE and informing or indicating N of the m-th group to the target base stationmAnd each UE carries out prescheduling.
After the target base station finishes the pre-scheduling, the service base station enables the N of the mth groupmAnd switching the UE to the target base station.
Optionally, the target base station is aligned with N of the mth groupmAfter the UE pre-scheduling is finished, the target base station sends pre-scheduling finishing indication information to the service base station, and the service base station receives the pre-scheduling finishing indication information and then sends the N of the mth groupmAnd switching the UE to the target base station.
The serving base station may traverse the M packets, and perform the above method as long as there is a packet M satisfying the handover condition until all the divided packets are traversed.
Therefore, in the scheme of the embodiment of the application, the service base station divides the plurality of accessed UEs into a plurality of groups by the method, and when the UE in each group meets the cell switching condition, the service base station performs pre-scheduling interaction processing with the target base station, so as to perform switching processing on the grouped UEs meeting the switching condition, thereby ensuring the success rate of switching and improving user experience.
Based on the same inventive concept, the embodiment of the present application further provides a serving base station, configured to perform the method in the foregoing method embodiment.
In one implementation, please refer to fig. 4, which is a schematic diagram of a serving base station according to an embodiment of the present disclosure. As shown in fig. 4, the serving base station 400 includes a processing unit 410 and a transceiving unit 420.
A processing unit 410, configured to divide a plurality of accessed UEs into M groups; also for the M-th group of the M groups, if there is at least LmEach UE satisfies the cell switching condition and sends the N of the m-th groupmThe scheduling information of each UE is transmitted to the target base station through the transceiving unit 420; the processing unit 410 is further configured to apply the m-th group of NmAnd switching the UE to the target base station.
Optionally, the processing unit 410 obtains reference signal received power RSRP of each UE of the multiple UEs and divides the multiple UEs into the M groups according to M preset continuous RSRP interval ranges.
Optionally, when a difference between the signal quality metric of the target base station reported by the UE and the signal quality metric of the serving base station reported by the UE is greater than or equal to a preset threshold T of the signal quality metric, it is determined that the UE satisfies a cell handover condition, where the signal quality metric includes at least one of: reference signal received power, RSRP, reference signal received quality, RSRQ, and signal-to-noise ratio, SNR.
Optionally, the processing unit 410 traverses the M groups of divided UEs, and performs the above processing on each group of UEs meeting the cell switching condition.
Details of the operations performed by the units may refer to the method embodiments shown in fig. 2 and fig. 3, and are not described herein again.
The division of each unit of the above communication device is only a logical division, and the actual implementation may be wholly or partially integrated into one physical entity, or may be physically separated. And these units can be realized in the form of software called by processor; or may be implemented entirely in hardware; and part of the units can be realized in the form of calling by a processor through software, and part of the units can be realized in the form of hardware.
For example, the functions of the above units may be stored in a memory in the form of program codes, which are scheduled by a processor to implement the functions of the above units. The Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU) or other processor capable of calling programs. As another example, the above units may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more Digital Signal Processors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), etc. For another example, in combination with the above two methods, part of the functions is implemented in the form of a scheduler code of the processor, and part of the functions is implemented in the form of a hardware integrated circuit. And when the above functions are integrated together, the functions can be realized in the form of a system-on-a-chip (SOC).
In another implementation, please refer to fig. 5, which is a schematic diagram of another serving base station according to an embodiment of the present application. As shown in fig. 5, the serving base station 500 includes a processor 510 and a transceiver 520. In the downlink direction, the processor 510 generates data or signaling and transmits the same to the UE through the antenna using the transceiver 520. In the uplink direction, the processor 510 receives data of the UE through the antenna by using the transceiver 520 for processing. The serving base station 500 further comprises an interface 530 for communicating with neighbouring base stations.
In yet another implementation, the present application further provides a network serving base station, including a processor, configured to call a program stored in a memory to implement the handover method.
Based on the same inventive concept, the present application also provides a program product, such as a computer-readable storage medium, which includes program code, when called by a processor, causes the processor to implement the above handover method.
Those skilled in the art will understand that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the above program may be stored in a computer readable storage medium, where the program codes are called by a processor, and the processor is used to execute the method executed by the serving base station in the above method embodiments. The embodiment of the present application does not limit the form and number of the memory and the processor, for example, the memory may be a CPU or other processor capable of calling a program, and the memory may be various media capable of storing program codes, such as a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (12)

1. A method of handover, the method comprising:
a service base station divides a plurality of accessed User Equipment (UE) into M groups;
for the M-th group of said M groups, if there is at least LmEach UE satisfies the cell switching condition, and the service base station combines the N of the m-th groupmThe scheduling information of each UE is sent to the target base station, NmGreater than or equal to LmN of said m-th groupmThe scheduling information of each UE is used for the target base station to perform pre-scheduling;
the serving base station transmits the N of the m-th groupmAnd switching the UE to the target base station.
2. The method of claim 1, wherein the cell handover condition comprises: the difference between the signal quality measurement of the target base station reported by the first UE and the signal quality measurement of the serving base station reported by the first UE is greater than or equal to T, and the first UE is the L-leastmAnd T is the threshold of the preset signal quality metric.
3. The method of claim 2, wherein the signal quality metric of the target base station comprises at least one of: the reference signal received power RSRP of the target base station, the reference signal received quality RSRQ of the target base station and the signal-to-noise ratio SNR of the target base station; the signal quality metric of the serving base station comprises at least one of: the reference signal received power RSRP of the serving base station, the reference signal received quality RSRQ of the serving base station and the signal to noise ratio SNR of the serving base station.
4. The method of claim 1, wherein N ismScheduling information of each UE, including:
said N ismAt least one of QoS, throughput and time-frequency resource of UE.
5. The method of claim 1, wherein the N of the m-th group is assigned at the serving base stationmBefore the UE is handed over to the target base station, the method further includes:
receiving the pre-scheduling completion indication information sent by the target base station, wherein the pre-scheduling completion indication information is based on the NmThe scheduling information of each UE is NmAnd indication information of scheduling resources at the target base station allocated by each UE.
6. The method according to any of claims 1 to 5, wherein the serving base station divides the accessed multiple User Equipments (UEs) into M groups, including:
the serving base station acquires Reference Signal Received Power (RSRP) of each UE of the plurality of UEs; and dividing the plurality of UE into the M groups according to M preset continuous RSRP interval ranges.
7. A serving base station, comprising: a processing unit and a transceiver unit;
the processing unit is used for dividing a plurality of accessed User Equipment (UE) into M groups;
the processing unit is further configured to, for an mth group of the M groups, if at least L existsmEach UE satisfies the cell switching condition and sends the N of the m-th groupmThe scheduling information of each UE is sent to the target base station through the receiving and sending unit, and N ismGreater than or equal to LmN of said m-th groupmThe scheduling information of each UE is used for the target base station to perform pre-scheduling;
the processing unit is further configured to assign N of the m-th groupmAnd switching the UE to the target base station.
8. The serving base station of claim 7,
the processing unit is used for regarding the M-th group in the M groups, if at least L existsmEach UE satisfies the cell switching conditionN of said m-th groupmThe scheduling information of each UE is sent to the target base station through the transceiver unit, and the cell switching condition includes:
the difference between the signal quality measurement of the target base station reported by the first UE and the signal quality measurement of the serving base station reported by the first UE is greater than or equal to T, and the first UE is the L-leastmAnd T is the threshold of the preset signal quality metric.
9. The serving base station of claim 8, wherein the signal quality metric of the target base station comprises at least one of: the reference signal received power RSRP of the target base station, the reference signal received quality RSRQ of the target base station and the signal-to-noise ratio SNR of the target base station; the signal quality metric of the serving base station comprises at least one of: the reference signal received power RSRP of the serving base station, the reference signal received quality RSRQ of the serving base station and the signal to noise ratio SNR of the serving base station.
10. The serving base station of claim 7, wherein N ismScheduling information of each UE, including:
said N ismAt least one of QoS, throughput and time-frequency resource of UE.
11. The serving base station of claim 7, wherein the processing unit is configured to:
receiving, by the transceiver unit, the pre-scheduling completion indication information sent by the target base station, where the pre-scheduling completion indication information is based on the NmThe scheduling information of each UE is NmIndication information of scheduling resources at the target base station allocated by each UE;
the N of the m-th groupmAnd switching the UE to the target base station.
12. The serving base station according to any of claims 7 to 11, wherein the processing unit is configured to:
acquiring Reference Signal Received Power (RSRP) of each UE of the plurality of UEs;
and dividing the plurality of UE into the M groups according to M preset continuous RSRP interval ranges.
CN202110976303.7A 2021-08-24 2021-08-24 Switching method and base station Pending CN113692027A (en)

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