WO2023061254A1

WO2023061254A1 - Multi-user equipment scheduling method and apparatus, base station, and computer readable storage medium

Info

Publication number: WO2023061254A1
Application number: PCT/CN2022/123438
Authority: WO
Inventors: 郑正
Original assignee: 中兴通讯股份有限公司
Priority date: 2021-10-12
Filing date: 2022-09-30
Publication date: 2023-04-20
Also published as: CN115988660A

Abstract

The present application provides a multi-user equipment scheduling method and apparatus, a base station, and a computer readable storage medium. The method comprises: performing single-user channel measurement on a plurality of user equipment to obtain single-user channel information; according to the intensity value of the single-user channel information, pairing each user equipment with a beam; selecting a candidate user equipment and a candidate beam according to a multi-user equipment scheduling condition; determining the priorities of the candidate user equipment and the candidate beam; determining a target beam and a target user equipment according to the priorities; allocating a resource block; and performing multi-user scheduling on the target user equipment according to uplink channel information.

Description

Multi-user equipment scheduling method, device, base station and computer-readable storage medium

Cross References to Related Applications

This application is based on a Chinese patent application with application number 202111187849.0 and a filing date of October 12, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The embodiments of the present application relate to but are not limited to the field of communication technologies, and in particular, relate to a multi-user equipment scheduling method, device, base station, and computer-readable storage medium.

Background technique

In 5G applications, the mmWave system uses a combination of analog phase shifters and digital links for shaping to reduce system costs. The multi-user MIMO technology has been applied in the millimeter wave system, and the multi-user MIMO technology can be realized by combining frequency division multiplexing and space division multiplexing. However, the analog-to-digital hybrid shape-forming architecture combined with analog phase shifters and digital links constrains the base station antenna channel, so that the base station has only one direction beam at a time of full bandwidth; user equipment (User Equipment, UE) needs to be in different The base station is accessed under the beam for communication; the hardware constraints of the user equipment also lead to the need to calibrate the uplink beam measurement at different times. These factors have led to multi-user scheduling that mainly uses multi-user channel information for space division multiplexing at present. The method is: first select multiple user equipments for pairing, and then reconfigure uplink measurement resources for the user equipments and measure to obtain multi-user channel information. Or based on the uplink periodic measurement channel configured by the initial access of the user equipment, use the uplink and downlink reciprocal beams to measure multiple times at different measurement opportunities to obtain multi-user channel information, and then screen users who meet the multi-user scheduling conditions based on the multi-user channel information device, and finally perform multi-user scheduling based on the multi-user channel information. This method requires additional signaling interaction with the millimeter-wave terminal, resulting in high measurement overhead and greatly reducing system performance.

Contents of the invention

The following is an overview of the topics described in detail in this article. This summary is not intended to limit the scope of the claims.

Embodiments of the present application provide a multi-user equipment scheduling method, device, base station, and computer-readable storage medium.

In the first aspect, the embodiment of the present application provides a multi-user equipment scheduling method, which is applied to a base station. The method includes: performing single-user channel measurement on multiple user equipments accessing the base station, and obtaining each of the Single-user channel information corresponding to the user equipment, where the single-user channel information includes at least the intensity value fed back by the user equipment to the beam and uplink channel information; for each user equipment, according to the corresponding intensity value, the The user equipment is paired with the beam corresponding to the maximum value of the intensity value; according to the preset multi-user equipment scheduling condition, at least one candidate user equipment is determined from a plurality of the user equipment, and the candidate The beam paired by the user equipment is used as a first candidate beam; determining the priority of the candidate user equipment, and determining the priority of the first candidate beam according to the priority of the candidate user equipment; according to the first The priority of the candidate beam determines the target beam, and determines the target user equipment corresponding to the target beam according to the priority of the candidate user equipment; for each of the target beams, resource block allocation is performed for the corresponding target user equipment , and obtain resource block allocation parameters; perform multi-user equipment scheduling on the target user equipment according to the uplink channel information and the resource block allocation parameters.

In the second aspect, the embodiment of the present application also provides a multi-user equipment scheduling device, which is applied to a base station, including: a single-user channel measurement unit, configured to perform single-user channel measurement on multiple user equipments accessing the base station, respectively. The measurement is to obtain the single-user channel information corresponding to each of the user equipments, and the single-user channel information includes at least the strength value and the uplink channel information fed back by the user equipment to the beam; the pairing unit is configured to pair each of the user equipment The user equipment, according to the corresponding intensity value, pair the user equipment with the beam corresponding to the maximum value in the intensity value; the first screening unit is configured to schedule according to the preset multi-user equipment The condition is to determine at least one candidate user equipment from a plurality of user equipments, and use the beam paired with the candidate user equipment as the first candidate beam; the priority calculation unit is configured to determine the candidate user equipment priority, and determine the priority of the first candidate beam according to the priority of the candidate user equipment; the second screening unit is configured to determine the target beam according to the priority of the first candidate beam, and according to the The priority of the candidate user equipment determines the target user equipment corresponding to the target beam; the resource block allocation unit is configured to allocate resource blocks for the corresponding target user equipment for each of the target beams, and obtain resource blocks Allocation parameters; a scheduling unit configured to perform multi-user equipment scheduling on the target user equipment according to the uplink channel information and the resource block allocation parameters.

In a third aspect, an embodiment of the present application further provides a base station, including: a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the computer program, implements the following: A multi-user equipment scheduling method described in one aspect.

In the fourth aspect, the embodiment of the present application also provides a computer-readable storage medium, the storage medium stores executable instructions, and when the executable instructions are executed by a processor, the multi-user system described in the first aspect is implemented. Device scheduling method.

Additional features and advantages of the application will be set forth in the description which follows, and, in part, will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Description of drawings

The accompanying drawings are used to provide a further understanding of the technical solution of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

FIG. 1 is a flowchart of a multi-user equipment scheduling method according to an embodiment of the present application;

Fig. 2 is the flowchart of step S600 in Fig. 1;

FIG. 3 is a schematic structural diagram of a multi-user equipment scheduling device according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments described here are only used to explain the present application, not to limit the present application.

It should be noted that although the functional units are divided in the schematic diagram of the device and the logical order is shown in the flowchart, in some cases, it may be performed in a different order than the division of units in the device or the sequence in the flowchart steps shown or described. The terms "first", "second" and the like in the specification and claims and the above drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence or sequence. In the description of the present application, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number.

Embodiments of the present application provide a multi-user equipment scheduling method, device, base station, and computer storage medium; perform single-user channel measurement on multiple user equipment connected to the base station, and obtain single-user channel information corresponding to each user equipment, The single-user channel information includes at least the intensity value and uplink channel information fed back by the user equipment to the beam; for each user equipment, according to the corresponding intensity value, pair the user equipment with the beam corresponding to the maximum value of the intensity value; The multi-user equipment scheduling condition is set, at least one candidate user equipment is determined from multiple user equipments, and the beam paired by the candidate user equipment is used as the first candidate beam; the priority of the candidate user equipment is determined, and according to the priority of the candidate user equipment Determine the priority of the first candidate beam; determine the target beam according to the priority of the first candidate beam, and determine the target user equipment corresponding to the target beam according to the priority of the candidate user equipment; for each target beam, for the corresponding target user The device allocates resource blocks and obtains resource block allocation parameters; according to the uplink channel information and resource block allocation parameters, multi-user equipment scheduling is performed on target user equipment; the combination of frequency division multiplexing and space division multiplexing under the millimeter wave system is optimized The multi-user multi-antenna scheduling process can directly use single-user channel information for multi-user scheduling, saving signaling interaction overhead and additional measurement overhead with user equipment, and improving system spectrum efficiency.

The embodiments of the present application will be further described below in conjunction with the accompanying drawings.

Referring to FIG. 1 , FIG. 1 is a flowchart of a multi-user equipment scheduling method; the multi-user equipment scheduling method is applied to a base station, and the base station applies a multi-user MIMO system.

As shown in Figure 1, a multi-user equipment scheduling method includes but is not limited to the following steps:

Step S100, perform single-user channel measurement on multiple user equipments accessing the base station, and obtain single-user channel information corresponding to each user equipment. The single-user channel information includes at least the intensity value fed back by the user equipment to the beam and uplink channel information .

It should be noted that the single-user channel means that the base station uses a beam corresponding to a single user to measure the channel of a single user, and the multi-user channel means that the base station uses a beam corresponding to multiple users to measure channels of multiple users. In the millimeter wave system, due to the existence of analog beams, multi-user pairing needs to be selected first, and then the base station uses the beams corresponding to multiple users to receive channel sounding reference signals (Sounding Reference Signal, SRS), in order to realize multi-user channel measurement. Therefore, the single-user channel measurement is simpler to collect and calculate than the multi-user channel measurement, and at the same time, the overhead is smaller.

It should be noted that the user equipment includes user terminals such as mobile terminals, smart terminals, multimedia equipment, and streaming media equipment.

For step S100, the single-user channel measurement includes downlink channel beam strength measurement, and the single-user channel information obtained from the measurement is the strength value fed back by the user equipment to the beam. In some embodiments, downlink channel beam strength measurement is as follows: the base station sequentially transmits multiple beams to each user equipment accessing the base station, and obtains intensity values fed back by the user equipment for different beams. For example, a cell has 10 user equipments connected to a base station, and the base station covers the entire cell by using 16 preset beams. When the base station performs downlink channel beam strength measurement, it transmits beam number 1 to each user equipment respectively. receiving beams with beam number 1 from each user equipment and measuring the intensity value. Then transmit the beam with the beam number 2, receive the feedback of each user equipment on the beam with the beam number 2 and measure the intensity value. The beams are polled according to the above process until the 16 preset beams are transmitted to the user equipment, and then the intensity value fed back by the user equipment to the beams is obtained.

In addition, after completing the downlink channel beam intensity measurement and obtaining the intensity value fed back by each user equipment for each beam, the following steps are also included: constructing an intensity table according to the intensity value fed back by each user equipment for each beam, and Record the intensity table in the log; the intensity table includes the intensity value fed back by each user equipment for each beam. The intensity table is recorded in the log, which is convenient for calling and querying later.

Table 1 shows the intensity table obtained after the base station measures the downlink channel beam strength of 10 user equipments accessed through 16 preset beams.

Table 1 Intensity table

It should be noted that P _1,1 represents the intensity value fed back by the user equipment with the UE number 1 to the beam with the beam number 1, and the other principles are the same.

The single-user channel measurement includes uplink channel sounding reference signal measurement, and the single-user channel information obtained from the measurement is uplink channel information. Uplink channel sounding reference signal measurement in some embodiments is: to perform uplink channel sounding reference signal measurement on multiple user equipments accessing the base station, and each user equipment will send channel sounding reference signals to the base station at different times, that is, the uplink channel The information is the channel sounding reference signal, and the channel sounding reference signal is used to estimate the quality of the uplink channel and provide reference for multi-user scheduling.

Of course, through single-user channel measurement, other single-user channel information can also be obtained, such as the channel quality of the user equipment and the correlation of each channel corresponding to the user equipment.

Step S200, for each user equipment, according to the corresponding intensity value, pair the user equipment with the beam corresponding to the maximum value of the intensity value.

For step S200, the maximum value of the intensity value corresponding to each user equipment may be determined from the intensity table, and the user equipment is paired with the beam corresponding to the maximum value. For example, for the user equipment with UE number 1, the maximum value of its corresponding intensity value can be obtained by searching from the strength table is P _1,2 , then the user equipment with UE number 1 is paired with the beam with beam number 2, That is, the user equipment whose UE number is 1 will use the beam whose beam number is 2 to communicate with the base station.

Step S300, according to preset multi-user equipment scheduling conditions, determine at least one candidate user equipment from multiple user equipments, and use the beam that the candidate user equipment is paired with as the candidate beam.

For step S300, according to preset multi-user equipment scheduling conditions, at least one candidate user equipment is determined from multiple user equipments, and the beam to which the candidate user equipment is paired is used as the first candidate beam, in some embodiments: according to the user equipment The channel quality of the device is correlated with each channel corresponding to the user equipment, at least one candidate user equipment is determined from multiple user equipments, and the beam to which the candidate user equipment is paired is used as the first candidate beam.

For example, the beam with the beam number 2 is paired with the user equipment with the UE number 1 and the user equipment with the UE number 3, and the user equipment with the UE number 1 meets the multi-user equipment scheduling conditions, while the user equipment with the UE number 3 does not If the multi-user equipment scheduling condition is met, the user whose UE number is 1 is used as a candidate user equipment, and the user whose UE number is 3 is not used as a candidate user equipment; correspondingly, the beam whose beam number is 2 is used as the first candidate beam.

For another example, the beam with the beam number 1 is paired with the user equipment with the UE number 5, and the user equipment with the UE number 5 does not meet the multi-user equipment scheduling conditions, then the user equipment with the UE number 5 is not a candidate user equipment, and correspondingly , the beam whose beam number is 1 is not the first candidate beam.

It should be noted that the preset multi-user equipment scheduling condition is a conditional function determined by the channel quality of the user equipment and the correlation of each channel corresponding to the user equipment, which can be obtained according to historical data.

In addition, in step S300, according to the preset multi-user equipment scheduling condition, at least one candidate user equipment is determined from multiple user equipments, and after the step of using the beam paired by the candidate user equipment as the first candidate beam, the following steps are further included: : Construct a pairing table according to the pairing relationship between the beam and the user equipment and the pairing relationship between the beam and the candidate user equipment, and record the pairing table in the log; the pairing table at least includes the pairing relationship between the beam and the user equipment and the pairing relationship between the beam and the candidate user equipment . The pairing table is recorded in the log, which is convenient for calling and querying later.

Table 2 shows the obtained pairing table after the base station measures the downlink channel beam strength of the 10 accessed user equipments through 16 preset beams.

Table 2 pairing table

波束编号beam number	11	22	33	......	1515	1616
用户设备user equipment	{n ₁} {n ₁ }	{n ₂} {n ₂ }	{n ₃} {n ₃ }	......	{n ₁₅} {n ₁₅ }	{n ₁₆} {n ₁₆ }
用户设备数量Number of user devices	N ₁ N ₁	N ₂ N ₂	N ₃ N ₃	......	N ₁₅ N ₁₅	N ₁₆ N ₁₆
候选用户设备candidate user equipment	N _1,MU N _1,MU	N _2,MU N _2,MU	N _3,MU N _3,MU	......	N _15,MU N _15,MU	N _16,MU N _16,MU

It should be noted that, in Table 2, {n ₁ } represents the set of user equipment paired with the beam whose beam number is 1, N ₁ is the number of user equipment in the set of {n ₁ }, N _1,MU is A set of candidate user equipments that meet the multi-user equipment scheduling conditions among {n ₁ } that are paired with the beam numbered 1;

Step S400, determining the priority of the candidate user equipment, and determining the priority of the first candidate beam according to the priority of the candidate user equipment.

For step S400, determining the priority of the candidate user equipment, in some embodiments: obtaining the priority of the candidate user equipment according to the service type of the candidate user equipment. The priority can be calculated by a function related to the service type of the user equipment, and the service type includes retransmission, guaranteed bit rate, and the like.

Determining the priority of the first candidate beam according to the priority of the candidate user equipment in some embodiments is: for each candidate beam, performing a weighted average of the priorities of the candidate user equipment corresponding to the first candidate beam to obtain the first candidate beam priority.

In step S500, a target beam is determined according to the priority of the first candidate beam, and a target user equipment corresponding to the target beam is determined according to the priority of the candidate user equipment.

For step S500, wherein the target beam is determined according to the priority of the first candidate beam, in some embodiments: the second candidate beam is selected from the first candidate beam, and the second candidate beam is the number of corresponding candidate user equipments The first candidate beam greater than or equal to the first preset threshold; the priority of the first candidate beam is used as the priority of the second candidate beam, and when the number of the second candidate beam is greater than or equal to the second preset threshold, the second The priorities of the candidate beams are sorted in descending order, and all second candidate beams ranked before the second preset threshold are selected as target beams.

It should be noted that the first preset thresholds are obtained based on historical experience, and specific values can be changed according to actual needs. The second preset threshold is obtained according to actual requirements, that is, the number of target user equipments for which multi-user equipment scheduling needs to be performed.

For example, the first set threshold is 2, and the first candidate beams include a beam with a beam number of 2, a beam with a beam number of 5, a beam with a beam number of 8, and a beam with a beam number of 10. The beam with the beam number 2 is paired with the user equipment with the UE number 1, and its candidate user equipment is 1, which is smaller than the first set threshold; the beam with the beam number 5 is paired with the user equipment with the UE number 4, and the UE number is 6 The user equipment with the beam number 8 is paired with the user equipment with the UE number 7 and the user equipment with the UE number 8, then its candidate user equipment is 2, which is equal to the first set threshold; the beam with the beam number 10 For pairing with the user equipment with UE number 9 and the user equipment with UE number 10, the candidate user equipment is 2, which is equal to the first set threshold. The beam with the beam number 5, the beam with the beam number 8, and the beam with the beam number 10 are used as the second candidate beams.

The priority of the user equipment with the UE number 4 is 0.5, the priority of the user equipment with the UE number 6 is 0.7, and the priority of the beam with the beam number 5 is 0.6. The priority of the user equipment with the UE number 7 is 0.3, the priority of the user equipment with the UE number 8 is 0.7, and the priority of the beam with the beam number 5 is 0.5. The priority of the user equipment with the UE number 9 is 0.7, the priority of the user equipment with the UE number 10 is 0.9, and the priority of the beam with the beam number 10 is 0.8.

The number of the second candidate beams is 3, which is greater than the second preset threshold. Then sort the beam with beam number 5, the beam with beam number 8, and the beam with beam number 10 in descending order according to the priority. The sorting result is: the beam with beam number 10, the beam with beam number 5 Beam, the beam with beam number 8. Select the first 2 beams, that is, the beam with beam number 10 and the beam with beam number 5 as the target beam.

For another example, in another embodiment, the second preset threshold is 4. Only the beam with the beam number 5, the beam with the beam number 8, and the beam with the beam number 10 are used as the second candidate beams. Then the number of candidate beams is 3 and is less than the second preset threshold, then do not continue to perform subsequent steps until the new user equipment accesses the base station and makes the second candidate beam corresponding to the new user equipment correspond to the previous user equipment The sum of the numbers of the second candidate beams is greater than or equal to a second preset threshold.

Wherein, the target user equipment corresponding to the target beam is determined according to the priority of the candidate user equipment. In some embodiments, for each target beam, the priority of the corresponding candidate user equipment is sorted in descending order, and the selected All candidate user equipments ranked before the third preset threshold are used as target user equipments.

It should be noted that the third preset threshold is obtained based on historical experience, and specific values can be changed according to actual needs.

For example, the third preset threshold is 1, and the beam with the beam number 5 is used as the target beam, the priority of the user equipment with the UE number 4 is 0.5, the priority of the user equipment with the UE number 6 is 0.7, and the UE number The user equipment with UE number 4 and the user equipment with UE number 6 are sorted in descending order according to the priority, the sorting result is: user equipment with UE number 6, user equipment with UE number 4, select the first user The device, that is, the user equipment whose UE number is 6, serves as the target user equipment.

For the beam with the beam number 10, the priority of the user equipment with the UE number 9 is 0.7, and the priority of the user equipment with the UE number 10 is 0.9, and the user equipment with the UE number 9 and the user equipment with the UE number 10 Sort according to priority in descending order, the sorting result is: user equipment with UE number 10, user equipment with UE number 9, select the first user equipment, that is, user equipment with UE number 10, as the target user equipment.

That is, the final target user equipment is the user equipment with UE number 6 and the user equipment with UE number 10.

Through step S500, target beams and target user equipment suitable for multi-user equipment scheduling under the combination of frequency division multiplexing and space division multiplexing can be screened out.

Step S600, for each target beam, perform resource block allocation for the corresponding target user equipment, and obtain resource block allocation parameters.

For step S600, for each target beam, perform resource block (Resource Block, RB) allocation for the corresponding target user equipment, and obtain resource block allocation parameters, in some embodiments: target user corresponding to each target beam The device allocates resource blocks to the target user equipment based on frequency division multiplexing rules according to the proportion of service data volume of the target user equipment, and obtains resource block allocation parameters.

For example, a resource block includes N _RB sub-blocks. The beam with beam number 7 and the beam with beam number 4 are used as the target beam, and the beam pair with beam number 7 has 1 user equipment as the target user equipment, which is defined as UE7-1, and the beam pair with beam number 7 has 2 User equipments are used as target user equipments and are respectively defined as UE4-1 and UE4-2.

For the beam whose beam number is 7, since there is only one target user equipment UE7-1 paired, the service data volume of UE7-1 accounts for 100%, and the entire resource block is allocated to UE7-1, then UE7-1 The occupied resource blocks are 1-N _RB .

For the beam with beam number 4, the proportion of service data volume between UE4-1 and UE4-2 is a:b, and a+b=1, then the resource block occupied by UE4-1 is 1-N _RB1 , UE4- The resource blocks occupied by 2 are N _RB1 -N _RB . And the ratio of the number of resource blocks occupied by UE4-1 to the number of resource blocks occupied by UE4-2 is the same as the ratio of service data volumes of UE4-1 and UE4-2, that is, a:b. Then the resource block allocation parameter is N _RB1 .

Since step S700 is a step based on the uplink channel information, and the acquisition of uplink channel information in step S100 requires the time from processing steps S200 to step S600, before performing step S700, in order to ensure that the uplink channel information of the target user equipment is in Within the time interval threshold, a step of updating expired uplink channel information is also included, including but not limited to the following steps:

Obtain the measurement time of the uplink channel information of the target user equipment, the measurement time is the time when the uplink channel sounding reference signal measurement is performed in step S100 to obtain the uplink channel information; the measurement time interval is obtained according to the measurement time and the current time; the measurement time interval exceeds The target user equipment at the time interval threshold re-measures the uplink channel sounding reference signal to obtain new uplink channel information to replace expired uplink channel information.

It should be noted that the time interval threshold is set artificially and obtained according to historical experience.

Referring to Fig. 2, step S700, perform multi-user equipment scheduling for target user equipment according to uplink channel information and resource block allocation parameters.

For step S700, the base station sends a command to the physical layer to execute step S700. Step S700 includes but is not limited to the following steps:

Step S710, calibrate the uplink channel information corresponding to the target user equipment.

For step S710, the channel sounding reference signals received by the base station at different times have amplitude and phase errors, and the uplink channel information corresponding to the target user equipment is calibrated, which is conducive to improving the accuracy of the modulus-digital hybrid precoding weights, which in turn is beneficial to the downlink Multi-user scheduling.

Step S720, according to resource block allocation parameters, allocate resource blocks to obtain a plurality of second resource blocks.

For example, the target equipment users UE4-1 and UE4-2 corresponding to the beam with the beam number 4 are respectively configured with 1-N _RB1 resource blocks and N _RB1 -N _RB resource blocks; the beam with the beam number 7 corresponds to the target The device user UE7-1 is paired with 1-N _RB resource blocks, and the target device users UE14-1 and UE14-2 corresponding to the beam numbered 14 are respectively paired with 1-N _RB2 resource blocks and N _RB2 -N _RB resource blocks, and 1<N _RB1 <N _RB2 <N _RB . Then the resource block allocation parameters are N _RB1 and N _RB2 . Then in step S730, according to the resource block allocation parameters N _RB1 and N _RB2 , the resource blocks are allocated to obtain three second resource blocks, namely: 1-N _RB1 , N _RB1 -N _RB2 , and N _RB2 -N _RB .

In another embodiment, if N _RB1 =N _RB2 , then two second resource blocks are obtained by allocating resource blocks, namely: 1-N _RB1 and N _RB1 -N _RB .

Step S730, for each second resource block, calculate the modulus-digital hybrid precoding weight according to the calibrated uplink channel information.

For step S730, the uplink channel information can be used for channel estimation to obtain the optimal precoding matrix, so the sub-resource block calculates the modulus mixed precoding weight according to the calibrated uplink channel information

The target device users UE4-1 and UE4-2 corresponding to the beam with the beam number 4 are respectively configured with 1-N _RB1 resource blocks and N _RB1 -N _RB resource blocks; the target device users corresponding to the beam with the beam number 7 UE7-1 is paired with 1-N _RB resource blocks, and the target equipment users UE14-1 and UE14-2 corresponding to the beam numbered 14 are paired with 1-N _RB2 resource blocks and N _RB2 -N _RB resources respectively blocks, and 1<N _RB1 <N _RB2 <N _RB , the resource blocks are allocated to obtain three second resource blocks, namely: 1-N _RB1 , N _RB1 -N _RB2 , and N _RB2 -N _RB . Then, for the second resource block of 1-N _RB1 , calculate the modulus hybrid precoding weight according to the updated uplink channel information of UE7-1, UE4-1, and UE14-1; for the second resource block of N _RB1 -N _RB2 block, according to the calibrated uplink channel information of UE7-1, UE4-2, UE14-1 to calculate the modulus hybrid precoding weight; for the second resource block of N _RB2 -N _RB , according to the updated UE7-1, The uplink channel information of UE4-2 and UE14-2 calculates the modulus-digital hybrid precoding weight.

In another embodiment, the target device users UE4-1 and UE4-2 corresponding to the beam with the beam number 4 are respectively configured with 1-N _RB1 resource blocks and N _RB1 -N _RB resource blocks; the beam number is 7 The target device user UE7-1 corresponding to the beam number 14 is paired with 1-N _RB resource blocks, and the target device users UE14-1 and UE14-2 corresponding to the beam numbered 14 are respectively paired with 1-N _RB2 resource blocks and Resource blocks of N _RB2 -N _RB , and 1<N _RB1 =N _RB2 <N _RB , the resource blocks are allocated to obtain 2 second resource blocks, which are: 1-N _RB1 and N _RB1 -N _RB . Then, for the second resource block of 1-N _RB1 , the modulus-digital hybrid precoding weight is calculated according to the updated uplink channel information of UE7-1, UE4-1, and UE14-1; for the second resource block of N _RB1 -N _RB block, calculating the modulus-digital hybrid precoding weights according to the calibrated uplink channel information of UE7-1, UE4-2, and UE14-2.

Analog-to-digital hybrid precoding is a cascade that decomposes all-digital precoding into two parts: digital baseband low-dimensional precoding is implemented through a small number of radio frequency links to eliminate inter-user interference, and analog radio frequency high-dimensional precoding is achieved through a large number of analog phase shifters Implemented to increase antenna array gain. The analog-digital hybrid precoding can achieve the purpose of greatly reducing the number of radio frequency links and processing complexity with a small performance loss, thereby improving the power efficiency of the system.

Step S740, in the MIMO system environment, perform downlink multi-user scheduling on the target user according to the space division multiplexing rule according to the modulus hybrid precoding weight.

In step S700, the adaptive adjustment technology of beam calibration, resource block allocation and hybrid precoding is used in the physical layer to optimize resources, so that the multi-user multiple input multiple output combined with frequency division multiplexing and space division multiplexing environment to improve throughput and data transfer link performance.

Through the above multi-user equipment scheduling method, perform single-user channel measurement, use single-user measurement information to screen and pair target user equipment and target beams, and use the calibrated uplink measurement channel to implement beam calibration through the base station based on single-user measurement information Downlink multi-user multi-antenna scheduling combined with frequency division multiplexing and space division multiplexing. The multi-user multi-antenna scheduling process combining frequency division multiplexing and space division multiplexing under the millimeter wave system is optimized, and there is no need to reconfigure the uplink measurement resources of the user equipment, which saves the overhead of signaling interaction with the user equipment; Multi-user channel measurement and user screening based on multi-user channel measurement information save additional measurement overhead; at the same time, the scheduling process is optimized and the spectrum efficiency of the MIMO system is improved.

In addition, an embodiment of the present application also provides an apparatus for scheduling multi-user equipment, which is applied to a base station and applies the above-mentioned multi-user equipment scheduling method.

Referring to FIG. 3 , FIG. 3 is a schematic structural diagram of a multi-user equipment pairing apparatus. The multi-user equipment scheduling apparatus includes a single-user channel measurement unit 100 , a pairing unit 200 , a first screening unit 300 , a priority calculation unit 400 , a second screening unit 500 , a resource block allocation unit 600 and a scheduling unit 700 .

Wherein, the single-user channel measurement unit 100 is configured to perform single-user channel measurement on multiple user equipments accessing the base station respectively, to obtain single-user channel information corresponding to each user equipment, and the single-user channel information at least includes Feedback strength value and uplink channel information; the pairing unit 200 is configured to, for each user equipment, pair the user equipment with the beam corresponding to the maximum value of the strength value according to the corresponding strength value; the first screening unit 300 is set In order to determine at least one candidate user equipment from multiple user equipments according to preset multi-user equipment scheduling conditions, the beam to which the candidate user equipment is paired is used as the first candidate beam; the priority calculation unit 400 is configured to determine the candidate user equipment , and determine the priority of the first candidate beam according to the priority of the candidate user equipment; the second screening unit 500 is configured to determine the target beam according to the priority of the first candidate beam, and determine the priority of the candidate user equipment according to The target user equipment corresponding to the target beam; the resource block allocation unit 600 is configured to perform resource block allocation for the corresponding target user equipment for each target beam, and obtain resource block allocation parameters; the scheduling unit 700 is configured to perform resource block allocation according to the uplink channel information and resource block allocation parameters, and perform multi-user equipment scheduling on the target user equipment.

It should be noted that each unit of the multi-user equipment scheduling apparatus in this embodiment corresponds to each step of the above-mentioned multi-user equipment scheduling method, adopts the same technical means, and has the same technical effect, and will not be described in detail here. .

Those skilled in the art should understand that the implementation functions of each unit in the multi-user equipment scheduling apparatus can be understood with reference to the relevant description of the foregoing multi-user equipment scheduling method. The functions of each unit in the multi-user equipment scheduling device can be realized by programs running on the processor, or by logic circuits, such as programmable logic (FPGA).

In addition, an embodiment of the present application also provides a base station.

Referring to FIG. 4, FIG. 4 is a schematic structural diagram of a base station. The base station includes: a memory 20 , a processor 10 and a computer program stored in the memory 20 and operable on the processor 10 . When the processor 10 executes the computer program, the above user equipment scheduling method is implemented.

The processor 10 and the memory 20 may be connected through a bus 30 or other means.

The memory 20, as a non-transitory computer-readable storage medium, can be used to store non-transitory software programs and non-transitory computer-executable programs. In addition, the memory 20 may include a high-speed random access memory, and may also include a non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some embodiments, the memory 20 includes, in some embodiments, memory located remotely from the processor, which remote memories may be connected to the processor via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The non-transitory software programs and instructions required to realize the information processing method of the above-mentioned embodiment are stored in the memory 20, and when executed by the processor, the multi-user equipment scheduling method in the above-mentioned embodiment is executed, for example, the steps described above are executed S100 to step S700, and step S710 to step S740.

The node embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, an embodiment of the present application also provides a computer-readable storage medium, the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are executed by a processor or a controller, for example, by a Execution by the processor may cause the processor to execute the multi-user equipment scheduling method in the above embodiment, for example, execute the steps S100 to S700 and steps S710 to S740 described above.

The embodiment of the present application includes: performing single-user channel measurement on multiple user equipments accessing the base station respectively, to obtain the single-user channel information corresponding to each user equipment, and the single-user channel information includes at least the intensity value fed back by the user equipment to the beam and Uplink channel information; for each user equipment, according to the corresponding intensity value, pair the user equipment with the beam corresponding to the maximum value of the intensity value; according to the preset multi-user equipment scheduling condition, determine at least A candidate user equipment, using the beam that the candidate user equipment is paired with as the first candidate beam; determining the priority of the candidate user equipment, and determining the priority of the first candidate beam according to the priority of the candidate user equipment; according to the priority of the first candidate beam Determine the target beam according to the priority, and determine the target user equipment corresponding to the target beam according to the priority of the candidate user equipment; for each target beam, allocate resource blocks for the corresponding target user equipment, and obtain resource block allocation parameters; according to the uplink channel Information and resource block allocation parameters, multi-user equipment scheduling for target user equipment; optimize the multi-user multi-antenna scheduling process of frequency division multiplexing and space division multiplexing under the mmWave system, and can directly use single-user channel information Multi-user scheduling saves signaling interaction overhead and additional measurement overhead with user equipment, and improves system spectrum efficiency.

Those skilled in the art can understand that all or some of the steps and systems in the methods disclosed above can be implemented as software, firmware, hardware and an appropriate combination thereof. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit . Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile media implemented in any method or technology for storage of information, such as computer readable instructions, data structures, program elements, or other data. permanent, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, tape, magnetic disk storage or other magnetic storage devices, or can Any other medium used to store desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program elements, or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

The above is a description of some implementations of the present application, but the present application is not limited to the above-mentioned embodiments. Those skilled in the art can also make various equivalent deformations or replacements without violating the spirit of the present application. These equivalent Any modification or substitution is within the scope defined by the claims of the present application.

Claims

A multi-user equipment scheduling method applied to a base station, the method comprising:

Performing single-user channel measurement on multiple user equipments connected to the base station, to obtain single-user channel information corresponding to each user equipment, where the single-user channel information includes at least the intensity fed back by the user equipment to the beam value and uplink channel information;

For each user equipment, according to the corresponding intensity value, pair the user equipment with the beam corresponding to the maximum value among the intensity values;

Determining at least one candidate user equipment from multiple user equipments according to a preset multi-user equipment scheduling condition, and using the beam paired with the candidate user equipment as a first candidate beam;

determining the priority of the candidate user equipment, and determining the priority of the first candidate beam according to the priority of the candidate user equipment;

determining a target beam according to the priority of the first candidate beam, and determining a target user equipment corresponding to the target beam according to the priority of the candidate user equipment;

For each target beam, perform resource block allocation for the corresponding target user equipment, and obtain resource block allocation parameters;

Perform multi-user equipment scheduling on the target user equipment according to the uplink channel information and the resource block allocation parameters.
The multi-user equipment scheduling method according to claim 1, wherein said determining the target beam according to the priority of the first candidate beam comprises:

selecting second candidate beams from the first candidate beams, where the second candidate beams are the first candidate beams corresponding to which the number of candidate user equipments is greater than or equal to a first set threshold;

Taking the priority of the first candidate beam as the priority of the second candidate beam, and when the number of the second candidate beam is greater than or equal to a second preset threshold, the priority of the second candidate beam is set according to Sort in descending order, and select all the second candidate beams ranked before the second preset threshold as target beams.
The multi-user equipment scheduling method according to claim 1, wherein said determining the target user equipment corresponding to the target beam according to the priority of the candidate user equipment comprises:

For each target beam, the priorities of the corresponding candidate user equipments are sorted in descending order, and all the candidate user equipments ranked before the third preset threshold are selected as target user equipments.
The multi-user equipment scheduling method according to claim 1, wherein, for each of the target beams, performing resource block allocation for the corresponding target user equipment, and obtaining resource block allocation parameters, includes:

For the target user equipment corresponding to each of the target beams, according to the proportion of service data of the target user equipment, allocate resource blocks to the target user equipment based on frequency division multiplexing rules, and obtain the resource blocks Assign parameters.
The multi-user equipment scheduling method according to claim 1, wherein the single-user channel measurement includes downlink channel beam strength measurement; the single-user channel measurement is performed on multiple user equipments accessing the base station respectively, and each Single-user channel information corresponding to the user equipment, including:

For each of the user equipments, multiple beams are sequentially transmitted to obtain intensity values fed back by the user equipment for different beams.
The multi-user equipment scheduling method according to claim 1 or 5, wherein the single-user channel measurement is performed on the plurality of user equipments accessing the base station to obtain the single-user channel corresponding to each user equipment After the information step, the method further includes: constructing an intensity table and recording the intensity table in a log, the intensity table including the intensity value fed back by each user equipment for each beam.
According to the multi-user equipment scheduling method according to claim 1, the single-user channel information further includes the channel quality of the user equipment and the correlation of each channel corresponding to the user equipment; The equipment scheduling condition, determining at least one candidate user equipment from a plurality of user equipments, and using the beam paired with the candidate user equipment as a candidate beam includes:

Determine at least one candidate user equipment from multiple user equipments according to the channel quality of the user equipment and the correlation of each channel corresponding to the user equipment, and use the beam paired by the candidate user equipment as candidate beams.
The multi-user equipment scheduling method according to claim 1 or 7, wherein, according to the preset multi-user equipment scheduling condition, at least one candidate user equipment is determined from a plurality of said user equipments, and said candidate user equipment After the step of using the beam paired by the device as the first candidate beam, it also includes: constructing a pairing table, and recording the pairing table in a log, the pairing table includes at least the pairing relationship between the beam and the user equipment and the pairing relationship between the beam and the candidate user equipment.
The multi-user equipment scheduling method according to claim 1, wherein said determining the priority of the candidate user equipment, and determining the priority of the first candidate beam according to the priority of the candidate user equipment comprises:

Obtain the priority of the candidate user equipment according to the service type of the candidate user equipment;

The priorities of the candidate user equipments corresponding to the first candidate beams are weighted and averaged to obtain the priorities of the first candidate beams.
The multi-user equipment scheduling method according to claim 1, wherein the single-user channel measurement is performed on the plurality of user equipments accessing the base station respectively, and the single-user channel information corresponding to each of the user equipments is obtained, including :

Perform uplink channel sounding reference signal measurement on the plurality of user equipments accessing the base station, respectively, to obtain uplink channel information corresponding to each user equipment.
The multi-user equipment scheduling method according to claim 1 or 4, wherein said performing multi-user equipment scheduling on the target user equipment according to the uplink channel information and resource block allocation parameters includes:

Calibrate the uplink channel information corresponding to the target user;

Allocating the resource block to obtain a plurality of second resource blocks according to the resource block allocation parameter;

For each of the second resource blocks, calculate a mixed modulus precoding weight according to the calibrated uplink channel information;

Perform downlink multi-user scheduling on the target user according to the modulus-digital hybrid precoding weight according to a space division multiplexing rule.
The multi-user equipment scheduling method according to claim 11, wherein, before the step of performing multi-user equipment scheduling on the target user equipment according to the uplink channel information, further comprising:

Acquiring the measurement time of the uplink channel information of the target user equipment;

obtaining a measurement time interval according to the measurement time and the current time;

Re-performing uplink channel sounding reference signal measurement on the target user equipment whose measurement time interval exceeds a time interval threshold, and updating the uplink channel information.
A multi-user equipment scheduling device applied to a base station, comprising:

The single-user channel measurement unit is configured to perform single-user channel measurement on multiple user equipments accessing the base station, respectively, to obtain single-user channel information corresponding to each user equipment, and the single-user channel information includes at least the The strength value and uplink channel information fed back by the user equipment to the beam;

The pairing unit is configured to, for each of the user equipments, pair the user equipment with the beam corresponding to the maximum value of the intensity values according to the corresponding intensity value;

The first screening unit is configured to determine at least one candidate user equipment from multiple user equipments according to preset multi-user equipment scheduling conditions, and use the beam paired with the candidate user equipment as a first candidate beam ;

a priority calculation unit configured to determine the priority of the candidate user equipment, and determine the priority of the first candidate beam according to the priority of the candidate user equipment;

The second screening unit is configured to determine a target beam according to the priority of the first candidate beam, and determine a target user equipment corresponding to the target beam according to the priority of the candidate user equipment;

The resource block allocation unit is configured to perform resource block allocation for each of the target beams for the corresponding target user equipment, and obtain resource block allocation parameters;

The scheduling unit is configured to perform multi-user equipment scheduling on the target user equipment according to the uplink channel information and the resource block allocation parameters.
A base station, comprising: a memory, a processor, and a computer program stored on the memory and operable on the processor, when the processor executes the computer program, the method according to any one of claims 1 to 12 is realized Multi-user device scheduling method.
A computer-readable storage medium, storing executable instructions, when the executable instructions are executed by a processor, the method for scheduling multi-user equipment according to any one of claims 1 to 12 is implemented.