CN115315014A - Multi-stream scheduling method, device, communication base station and storage medium - Google Patents

Abstract

The present disclosure provides a multi-stream scheduling method, apparatus, base station and storage medium, the method comprising: a base station sends a channel state information reference signal to a terminal in each downlink channel; the base station determines target channel information according to the channel state information reference signal quality condition of each channel, wherein the target channel information comprises the number of target channels and the identification of the target channels; and the base station schedules the target channel to carry out multi-stream transmission according to the target channel information. The invention can improve the accuracy and stability of channel multi-stream scheduling.

Description

Multi-stream scheduling method, device, communication base station and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for multi-stream scheduling, a communication base station, and a storage medium.

Background

Nowadays, communication technology is rapidly developed, and multiple-Input multiple-Output (MIMO) technology is widely applied in the field of wireless communication. Under the general condition, the quality difference of multi-stream channels is not large, the MIMO technology can bring obvious gain effect to the network, but the phenomenon that the quality difference of the multi-stream channels is large can also exist at the same time by considering the networking characteristic change and the structural characteristics of passive room division after the network introduces distributed MIMO (multi-cell joint scheduling), and the forced scheduling of the multi-stream channels with large quality difference can cause negative gain to the network performance.

In the prior art, multiflow scheduling is mainly implemented by using an internal algorithm of a communication base station and a terminal, and a best effort, preferably high RANK mechanism is used, and the algorithm ignores the influence of a large difference in quality of multiflow channels, so that scheduling decisions in relevant scenes are not accurate enough, and network performance is reduced.

Disclosure of Invention

Embodiments of the present invention provide a multi-stream scheduling method, an apparatus, a base station, and a storage medium, so as to solve the problem in the prior art that channel scheduling accuracy is poor under some conditions (for example, channel quality differs greatly).

In a first aspect, an embodiment of the present invention provides a multi-stream scheduling method, where the method includes:

a base station sends a channel state information reference signal to a target terminal through each channel;

the base station determines target channel information according to the channel state information reference signal quality condition of each channel, wherein the target channel information comprises the number of target channels and the identification of the target channels;

and the base station schedules the target channel to carry out multi-stream transmission according to the target channel information.

In a second aspect, an embodiment of the present invention provides a method for multiflow scheduling, where the method includes:

a target terminal receives a state information reference signal from each channel of a base station, wherein the target terminal is any terminal corresponding to the base station;

the target terminal acquires channel quality information within a first preset time according to the state information reference signal;

the target terminal determines a first preferred channel based on the channel quality information;

the target terminal determines target channel information according to the first preferred channel, wherein the target channel information comprises the number of target channels and the identification of the target channels;

and the target terminal sends the target channel information to the base station.

In a third aspect, an embodiment of the present invention provides a multiflow scheduling apparatus, including:

a sending module, configured to send, by a base station, a channel state information reference signal of each channel to a target terminal;

a determining module, configured to determine, by the base station, target channel information according to the channel state information reference signal quality condition, where the target channel information includes the number of target channels and an identifier of the target channels;

and the scheduling module is used for scheduling the target channel to perform multi-stream transmission by the base station according to the target channel information.

In a fourth aspect, an embodiment of the present invention provides a multiflow scheduling apparatus, including:

a first receiving module, configured to receive, by a target terminal, a channel state information reference signal from each channel of a base station, where the target terminal is an arbitrary terminal corresponding to the base station;

a first obtaining module, configured to obtain, by the target terminal, channel quality information within a first preset time according to the channel state information reference signal;

a first determining module, configured to determine, by the target terminal, a first preferred channel based on the channel quality information;

a second determining module, configured to determine, by the target terminal, target channel information according to the first preferred channel, where the target channel information includes the number of target channels and an identifier of the target channel;

a first sending module, configured to send the target channel information to the base station by the target terminal.

In a fifth aspect, an embodiment of the present invention provides a base station, including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a multi-stream scheduling method as described in the first aspect.

In a sixth aspect, an embodiment of the present invention provides an electronic device, including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform a multi-stream scheduling method as described in the second aspect.

In a seventh aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to execute the multi-stream scheduling method according to the first aspect.

In an eighth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the multi-stream scheduling method according to the second aspect.

Drawings

The drawings are included to provide a better understanding of the present solution and are not to be construed as limiting the present disclosure. Wherein:

fig. 1 is a schematic flowchart of a multi-stream scheduling method according to an embodiment of the present invention;

fig. 2 is a second flowchart illustrating a multi-stream scheduling method according to an embodiment of the present invention;

fig. 3 is a third schematic flowchart of a multi-stream scheduling method according to an embodiment of the present invention;

fig. 4 is a fourth flowchart illustrating a multi-stream scheduling method according to an embodiment of the present invention;

fig. 5 is a fifth flowchart illustrating a multi-stream scheduling method according to an embodiment of the present invention;

fig. 6 is a sixth schematic flowchart of a multi-stream scheduling method according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a multiflow scheduling apparatus according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of another multiflow scheduling apparatus according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

The terms "first," "second," and the like in the embodiments of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring to fig. 1, fig. 1 is a schematic flowchart of a multi-stream scheduling method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:

step 101, the base station sends a channel state information reference signal to the terminal in each downlink channel.

In this step, the base station may configure and send a Channel State Information-Reference Signal (CSI-RS) on each downlink Channel, where the target terminal may be any terminal corresponding to the base station.

And 102, the base station determines target channel information according to the channel state information reference signal quality condition of each channel, wherein the target channel information comprises the number of target channels and the identification of the target channels.

In this step, after the base station may configure and send a channel state information Reference Signal on each downlink channel, the target terminal enters a "connected state", the target terminal measures a Signal-to-Noise Ratio (SINR) or a Signal strength (Reference Signal Receiving Power, RSRP) of the downlink CSI-RS on each channel, the base station may compare the SINR or RSRP of each channel measured by the target terminal to obtain a channel with the highest performance, and determine all channels capable of independent flow scheduling that satisfy the condition from the channel with the highest performance, that is, determine the target channel information, or, of course, the target terminal may compare the measured SINR or RSRP of each channel to obtain a channel with the highest performance, and determine all channels capable of independent flow scheduling that satisfy the condition from the channel with the highest performance, that is, determine the target channel information.

The target channel information may be obtained by comparing SINR and RSRP corresponding to each channel, where SINR and RSRP may represent quality of the channel, for example: the method comprises the steps of firstly determining one or more channels between the base station and the target terminal, wherein the channel is higher than SINR values or RSRP values of other channels, then comparing the SINR values or the RSRP values of the one or more channels with the corresponding SINR values or the corresponding RSRP values of other channels, determining an independent flow scheduling channel in a time period, and accordingly determining the target channel information.

When the target channel information is completed by the base station, algorithm update needs to be performed on one side of the base station, and adjustment does not need to be performed on one side of the target terminal, and in addition, an interaction protocol between the base station and the target terminal needs to be revised in a third Generation Partnership project (3 rd Generation Partnership project,3 gpp), and corresponding fields are added so that the target terminal reports the quality information of each channel detected by the target terminal to the base station.

When the target channel information is completed by the target terminal, the base station side does not need to be modified, but the algorithm of the target terminal side needs to be updated.

And 103, scheduling the target channel by the base station to perform multi-stream transmission according to the target channel information.

In this step, the base station decides a final Modulation and Coding Scheme (MCS) according to the target Channel Information, or according to a Channel State Information (CSI) report (report) reported by the target terminal, to complete scheduling of the target Channel for transmission by the target Channel.

The Channel State Information (CSI) report (report) may include Information such as a Channel Quality Indicator (CQI), a Rank Indicator (RI), a Precoding Matrix Indicator (PMI), and a reference signal Resource Indicator (CSI).

In an embodiment of the present invention, the base station first configures and sends CSI-RS on each downlink Channel, the target terminal enters a "connected State", the target terminal measures quality Information of the CSI-RS in each Channel, and the base station or the target terminal may obtain the target Channel Information according to the quality Information comparison, where when the base station compares the quality of the Information, the target terminal is required to report the tested quality Information to the base station, and the base station determines a final Modulation and Coding Scheme (MCS) according to the target Channel Information, which may also be a report (report) in combination with Channel State Information (CSI) reported by the target terminal, to complete scheduling of the target Channel for transmission by the target Channel. By the method, the probability of network performance reduction caused by overlarge channel quality difference is reduced, and the stability of channel scheduling is improved.

Optionally, the determining, by the base station, target channel information according to the channel state information reference signal quality condition of each downlink channel includes:

and the base station receives the target channel information sent by the target terminal, and the target channel information is obtained by measuring and comparing the quality of the reference signal of the channel state information of each downlink channel.

In this embodiment, the target terminal may obtain quality information corresponding to each channel according to the measurement of the quality of the CSI-RS channel of each channel, and then the target terminal compares the quality information corresponding to each channel, and finally determines the number of the target channels and the identifier of the target channel, that is, obtains the target channel information. The method can complete the determination of the target channel at the target terminal, thereby improving the stability of subsequent channel scheduling.

The channel quality measurement information corresponding to each channel may be SINR or RSRP of the CSI-RS on each channel.

The determining of the target channel information may be determining a channel with a maximum value corresponding to the measured quality information in all channels within a certain time, that is, a channel with a maximum SINR value or RSRP value, and may be identifying the channel as an "optimal channel," and then comparing independent flow scheduling channels and dependent flow scheduling channels in other channels according to the optimal channel, where the number of the target channels is the number of the independent flow scheduling channels, and the identification of the target channel is the identification of the independent flow scheduling channels.

Optionally, the determining, by the base station, target channel information according to the channel state information reference signal quality condition of each downlink channel includes:

the base station is based on the channel quality information reported by the terminal, and the channel quality information comprises at least one of the following items: the signal-to-noise ratio of the channel state information reference signal corresponding to the target channel and the strength of the channel state information reference signal corresponding to the target channel;

and the base station generates the target channel information according to the channel quality information.

In this embodiment, the target terminal performs channel quality measurement according to the CSI-RS sent to each channel, where the target terminal may obtain quality measurement information corresponding to each channel, and then sends the measurement information to the base station, and the base station compares the quality measurement information corresponding to each channel, and finally determines the number of the target channels and the identifier of the target channel, that is, obtains the target channel information. The measurement information corresponding to each channel may be an SINR or an RSRP of the CSI-RS on each channel. The determining of the target channel information may be determining a channel with a maximum corresponding quality information value among all channels within a certain time, that is, a channel with a maximum SINR value or RSRP value, identifying the channel as an "optimal channel," and comparing independent flow scheduling channels and dependent flow scheduling channels in other channels according to the optimal channel, where the number of the target channels is the independent flow scheduling channels, and the identification of the target channel is the identification of the independent flow scheduling channels. By the method, the target channel can be determined and all channels can be scheduled at the base station side, so that the accuracy and stability of the channels during scheduling are improved.

As an alternative implementation, please refer to fig. 2, algorithm updating needs to be performed on the target terminal side, the base station side does not need to be updated, and the channel is scheduled through the following process:

the base station configures the CSI-RS, respectively transmits the CSI-RS at the same time in different channels (physical channels or beams for transmitting different streams), the target terminal enters a 'connection state', and before establishing a downlink data channel, the base station measures quality information corresponding to the CSI-RS transmitted in the different channels.

The target terminal ranks the measured quality information, wherein the measured quality information may include SINR (or RSRP) values, and identifies channel i as an "optimal channel" when the SINR (or RSRP) value of channel i is always the largest within time T1 (alternatively: the SINR (or RSRP) average of channel i is the largest within time T1).

It should be noted that, after the "optimal channel" is determined, the target terminal may still use T0 as a period, and is required to periodically perform tracking measurement on the quality information of each channel.

In addition, when the target terminal finds that the SINR (or RSRP) value of a certain channel j is higher than the "optimal channel" by a predetermined threshold AdB and the holding time is not less than T2, "optimal channel change" is triggered, and the channel j satisfying the condition is identified as the "optimal channel" (if a plurality of channels are found to satisfy the condition at the same time, the channel with the maximum value is taken as the preferred target).

The target terminal calculates a difference value Δ SINR (or Δ RSRP) between an "optimal channel" SINR (or RSRP) value and measurement information of each other channel, and compares the difference value Δ SINR (or Δ RSRP) with a threshold value B1, when Δ SINR (or Δ RSRP) of a certain channel k is greater than B1 and the retention time is not less than T3, the target terminal identifies the channel k as a "non-independent stream scheduling channel" (i.e., an independent stream cannot be transmitted, but the same stream as that transmitted by other channels can be transmitted to obtain diversity gain), and does not perform independent stream scheduling on the channel k in the data transmission process.

It should be noted that, when the target terminal finds that the difference Δ SINR (or Δ RSRP) between the SINR (or RSRP) value of a certain non-independent stream scheduling channel m and the current "optimal channel" is smaller than B2 (B2 is not greater than B1), and the holding time is not lower than T4, the target terminal identifies the channel m as an "independent stream scheduling channel", and starts to supplement the independent stream scheduling channel m in the next data scheduling transmission period.

When the target terminal determines all channels to be finally independently flow-scheduled, the CQI to be finally reported is calculated according to the SINR values of the planned scheduling flow channels, the base station finally decides MCS selection, and reports the final RI and PMI.

As an optional implementation, please refer to fig. 3, algorithm updating is performed at the base station side, and algorithm adjustment does not need to be performed at the target terminal side, in addition, an interaction protocol between the base station and the target terminal in 3GPP needs to be modified, and corresponding fields are added, so that the target terminal can report channel quality information of each detected channel to the base station, and the channel is scheduled through the following procedures:

and the base station configures the CSI-RS and simultaneously transmits the CSI-RS in different channels respectively, the target terminal enters a 'connection state', and quality information corresponding to the CSI-RS transmitted by the base station in different channels is measured and fed back before a downlink data channel is established.

The base station orders the received quality information, wherein the measurement information may include SINR (or RSRP) values, and when the SINR (or RSRP) value of channel i is always the largest within time T1 (alternatively: the SINR (or RSRP) average of channel i within time T1 is the largest), channel i is identified as the "optimal channel".

It should be noted that, after determining the "optimal channel", the base station may still use T0 as a period, and require the target terminal to periodically perform tracking measurement and report on the quality information of each channel.

In addition, when the base station finds that the SINR (or RSRP) of a certain channel j is higher than the "optimal channel" by a predetermined threshold AdB and the retention time is not less than T2, "optimal channel change" is triggered, and the channel j satisfying the condition is identified as the "optimal channel" (if multiple channels are found simultaneously to satisfy the condition, the channel with the maximum value is taken as the preferred target).

The base station calculates a difference value delta SINR (or delta RSRP) between the 'optimal channel' SINR (or RSRP) value and the measurement information of each of the other channels, compares the difference value delta SINR (or delta RSRP) with a threshold B1, and when the delta SINR (or delta RSRP) of a certain channel k is greater than B1 and the retention time is not less than T3, the base station identifies the channel k as a 'non-independent stream scheduling channel' (i.e., an independent stream cannot be transmitted, but the same stream as that transmitted by the other channels can be transmitted to obtain diversity gain), and does not perform independent stream scheduling on the channel k in the data transmission process.

It should be noted that, when the base station finds that the difference Δ SINR (or Δ RSRP) between the SINR (or RSRP) value of a certain non-independent flow scheduling channel m and the current "optimal channel" is smaller than B2 (B2 is not greater than B1), and the retention time is not lower than T4, the base station identifies the channel m as an "independent flow scheduling channel", and starts to supplement the independent flow scheduling channel m in the next data scheduling transmission period.

And when the base station determines all channels to be independently scheduled finally, deciding final MCS selection according to the SINR value of each channel scheduled according to the plan and combining the CQI, RI, PMI and CRI information in the CSI report reported by the terminal.

As an optional implementation, please refer to fig. 4, the algorithm needs to be updated on the base station side, the target terminal side does not need to be updated, and the 3GPP protocol does not need to be revised, and the channel is scheduled through the following procedures:

the base station configures the CSI-RS, respectively and sequentially (non-simultaneously) and independently transmits the CSI-RS in different channels, the target terminal enters a connected state, and sequentially measures and feeds back measurement information corresponding to the CSI-RS which is sequentially and independently transmitted in different channels by the base station before establishing a downlink data channel, namely, the measurement information corresponding to different channels is reported on different sequentially fed back CSI reports, wherein the measurement information may include CQI and RSRP.

The base station sorts the CQI (or RSRP) values of different channels obtained from the target terminal, and identifies channel i as an "optimal channel" when the CQI (or RSRP) value of channel i is always the largest within time T1 (alternatively: the average CQI (or RSRP) of channel i within time T1 is the largest).

It should be noted that, after determining the "optimal channel", the base station may still use T0 as a period, and require the target terminal to periodically perform tracking measurement and report on the quality information of each channel.

In addition, when the base station finds that the CQI (or RSRP) value of a certain channel j reported by the target terminal is higher than the "optimal channel" by a predetermined threshold AdB and the retention time is not less than T2, "optimal channel change" is triggered, and the channel j satisfying the condition is identified as the "optimal channel" (if a plurality of channels are found to satisfy the condition at the same time, the channel with the maximum value is taken as the preferred target).

The base station calculates a difference value delta CQI (or delta RSRP) between a reported optimal channel CQI (or RSRP) value and measurement information of each other channel, compares the difference value delta CQI (or delta RSRP) with a threshold value B1, and when the delta CQI (or delta RSRP) of a certain channel k is greater than B1 and the retention time is not less than T3, the base station identifies the channel k as a non-independent stream scheduling channel (i.e., an independent stream cannot be transmitted, but the same stream as the other channels can be transmitted to obtain diversity gain), and does not perform independent stream scheduling on the channel k in a data transmission process correspondingly.

It should be noted that, when the base station finds that a difference Δ CQI (or Δ RSRP) between a CQI (or RSRP) value of a certain non-independent flow scheduling channel m reported by the target terminal and a current "optimal channel" is smaller than B2 (B2 is less than or equal to B1), and the retention time is not lower than T4, the target terminal identifies the channel m as an "independent flow scheduling channel", and starts to supplement the independent flow scheduling channel m in a next data scheduling transmission period.

And when the base station determines all channels to be finally independently scheduled, calculating and deciding final MCS selection according to the CQI value of each channel scheduled and scheduled.

As an optional implementation, please refer to fig. 5, algorithm update needs to be performed on the base station side, update does not need to be performed on the target terminal side, and revision is not needed to be performed on the 3GPP protocol, so that the method is applicable to a Time Division Duplex (TDD) network system (using reciprocity of uplink and downlink channels of the TDD system), and a channel is scheduled through the following procedures:

after the target terminal enters a "connected state", before the downlink data channel is established, the base station first measures SINR (or RSRP) values of uplink Sounding reference signals (Sounding RS) on each uplink channel (physical channels or beams for transmitting different streams). The base station sorts the detected SINR (or RSRP) values of the uplink Sounding RSs of different channels, and when the SINR (or RSRP) value of a certain channel i is always the maximum value within time T1 (alternatively: the average value of the SINR (or RSRP) of the channel i within the time T1 is the maximum), the channel i is identified as the 'optimal channel'.

It should be noted that, after determining the "optimal channel", the base station may still use T0 as a time period to perform tracking measurement on the uplink channel quality on each channel.

In addition, when the base station finds that the SINR (or RSRP) of a certain uplink channel j is higher than the current "optimal channel" by a predetermined threshold AdB and the retention time is not less than T2, "optimal channel change" is triggered, and the channel j satisfying the condition is identified as the "optimal channel" (if multiple channels are found to satisfy the condition at the same time, the channel with the maximum value is taken as the preferred target).

The base station calculates a difference value delta SINR (or delta RSRP) between the 'optimal channel' SINR (or RSRP) value and the measurement information of each other channel, compares the difference value delta SINR (or delta RSRP) with a threshold value B1, and when the delta SINR (or delta RSRP) of a certain channel k is greater than B1 and the retention time is not less than T3, the base station identifies the channel k as a 'non-independent flow scheduling channel' (i.e. independent flows cannot be transmitted, but the same flows can be transmitted with other channels to obtain diversity gain), and does not perform independent flow scheduling corresponding to the channel k in the data transmission process.

It should be noted that, when the base station finds that the difference Δ SINR (or Δ RSRP) between the SINR (or RSRP) value of a certain non-independent flow scheduling channel m and the current "optimal channel" is smaller than B2 (B2 is not greater than B1), and the holding time is not lower than T4, the target terminal identifies the channel m as an "independent flow scheduling channel", and starts to supplement the independent flow scheduling channel m in the next data scheduling transmission period.

And when the base station determines all channels to be independently scheduled finally, deciding final MCS selection according to the SINR value of each channel scheduled and combined with the CQI, RI, PMI and CRI information in the CSI report reported by the target terminal.

Referring to fig. 6, fig. 6 is a schematic flowchart of another multi-stream scheduling method according to an embodiment of the present invention, and as shown in fig. 6, the method includes the following steps:

step 601, a target terminal receives a channel state information reference signal from a base station, wherein the target terminal is any terminal corresponding to the base station.

Step 602, the target terminal obtains channel quality information by measuring within a first preset time according to the channel state information reference signal.

Step 603, the target terminal determines a first preferred channel based on the channel quality information.

Step 604, the target terminal determines target channel information according to the first preferred channel, wherein the target channel information includes the number of the target channels and the identification of the target channels.

Step 605, the target terminal sends the target channel information to the base station.

In this embodiment, the target terminal first receives the channel state information reference signal from each downlink channel of the base station, the target terminal enters a "connected state", the target terminal measures quality information of the channel state information reference signal of each channel, the target terminal determines the first preferred channel according to comparison of quality information corresponding to each channel, compares the first preferred channel with other channels, screens out a channel satisfying a condition as the target channel, and finally sends the number of the target channels and an identifier of the target channel to the base station, so that the base station completes scheduling of the channels. The method can reduce the probability of network performance reduction caused by overlarge channel quality difference and also improve the stability of channel scheduling.

The measurement information may include SINR or RSRP.

Optionally, the obtaining, by the target terminal, channel quality information according to the measurement of the quality of the csi reference signal of each channel within a first preset time includes:

the target terminal measures the quality of the channel state information reference signal sent by each channel within the first preset time to obtain the channel quality information, wherein the channel quality information includes at least one of the following: the signal-to-noise ratio corresponding to the target channel and the signal intensity corresponding to the target channel.

In this embodiment, the channel quality channel may include SINR and RSRP, that is, in the first preset time, the target terminal obtains SINR or RSRP of the channel state information reference signal in each channel, and by using the method, the channel quality information corresponding to each channel under a unified standard may be obtained, which provides a basis for the base station to schedule the channel, thereby improving accuracy and stability during channel scheduling.

It should be noted that the target terminal may measure SINR or RSRP of the downlink channel state information reference signal on each channel, where each channel may be a physical channel or a beam for transmitting different streams, which is not limited in the embodiment of the present invention.

Optionally, the determining, by the target terminal, a first preferred channel based on the channel quality information includes:

the target terminal judges whether the channel quality information corresponding to the target channel meets a first preset condition within the first preset time, and determines the target channel as the first preferred channel under the condition that the channel quality information corresponding to the target channel meets the first preset condition, wherein the first preset condition is that the value of the channel quality information corresponding to the target channel is larger than the value of the channel quality information corresponding to any one of the rest channels within the first preset time, and the rest channels are other channels excluding the target channel between the base station and the target terminal.

In this embodiment, the target terminal first ranks the channel quality information (SINR (or RSRP) values) of different channels that can be correctly mediated, and determines the target channel as the first preferred channel when the target channel meets the first preset condition, where the first preset condition may be that the channel quality information corresponding to the target channel in a first preset time is greater than the value of the channel quality information corresponding to any one of the remaining channels.

In addition, after the target terminal sorts the channel quality information corresponding to different channels, and when the channel quality information corresponding to the target channel is always the maximum value within the first preset time, the target channel may be determined as the first preferred channel, and the first preferred channel may be determined in another manner, for example: after the target terminal sorts the channel quality information corresponding to different channels, and when the average value of the channel quality information corresponding to the target channel in the first preset time is always the maximum, the target channel is determined as the first preferred channel. The embodiment of the present invention is not limited thereto.

It should be noted that the first preset time may be set according to an actual working condition and a user requirement, and the embodiment of the present invention is not limited thereto.

Optionally, after the target terminal determines a first preferred channel based on the channel quality information, the method further includes:

the target terminal acquires the channel quality information corresponding to the residual channels by taking second preset time as a period;

the target terminal judges whether the residual channel meets a second preset condition, and determines the alternative channel as a preferred preparation channel when the alternative channel in the residual channel meets the second preset condition, wherein the second preset condition is that the value of the alternative channel corresponding to the channel quality information is larger than a first set value compared with the value of the first preferred channel corresponding to the channel quality information, and the time kept to be longer than or equal to a third preset time;

and the target terminal takes the channel with the maximum value corresponding to the channel quality information in the preferred preparation channels as a second preferred channel to replace the first preferred channel when the number of the preferred preparation channels is greater than 1.

In this embodiment, after the target terminal determines the first preferred channel, the target terminal may perform tracking measurement on the channel quality information corresponding to each channel in a period of the second preset time, and if the target terminal finds that the channel quality information corresponding to the candidate channel is greater than a first set value as compared with the channel quality information corresponding to the first preferred channel and keeps the time greater than or equal to the third preset time, the target terminal determines the candidate channel as the second preferred channel, which is used to replace the first preferred channel. By the method, corresponding adjustment can be performed according to real-time conditions, the channel with the highest channel quality information is always used as a first selected object, and errors (including changes of different channel qualities caused by terminal movement) in the determination of the first preferred channel are reduced, so that the accuracy and stability in channel scheduling are improved.

In addition, when the number of the preferred spare lanes is equal to 1, the target terminal directly uses the preferred spare lane as the second preferred lane instead of the first preferred lane.

If a plurality of candidate channels are found at the same time, the candidate channels need to be sorted and compared, and the candidate channel corresponding to the maximum value of the channel quality information is determined as the second preferred channel, which is used to replace the first preferred channel.

In addition, the second preset time and the third preset time may be set according to an actual working condition and a user requirement, and the embodiment of the present invention is not limited thereto.

Optionally, the determining, by the target terminal, target channel information according to the first preferred channel includes:

the target terminal determines a difference value set according to the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the remaining channels, wherein the difference value set represents a difference value set of the remaining channels and the channel quality information of the first preferred channel respectively;

the target terminal judges whether the residual channel meets a third preset condition, and determines a first scheduling channel as a non-independent flow scheduling channel when the first scheduling channel in the residual channel meets the third preset condition, wherein the third preset condition is that a difference value between the channel quality information corresponding to a first preferred channel and the channel quality information corresponding to the first scheduling channel is greater than a second set value, and the time for which the difference value is greater than or equal to a fourth preset time is kept;

and the target terminal determines the number of the target channels and the target channel identification according to the non-independent flow scheduling channel.

In this embodiment, the target terminal determines a difference value set according to the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the remaining channels, when a difference value between the channel quality information corresponding to the first scheduling channel and the channel quality information corresponding to the first preferred channel is greater than the second set value and a time greater than or equal to a fourth preset time is kept, the first scheduling channel is determined as the non-independent flow scheduling channel, and after the comparison between the remaining channels and the first preferred channel is completed, the target channel number and the target channel identifier in all channels may be obtained through statistics.

It should be noted that the independent stream scheduling channel may be a channel participating in independent stream transmission, and may transmit an independent stream, and the non-independent stream scheduling channel may be a channel that is indicated as being unable to transmit an independent stream, but may transmit the same stream as other channels, so as to obtain diversity gain.

In addition, the fourth preset time may be set according to an actual working condition and a user requirement, and the embodiment of the present invention is not limited thereto.

Optionally, after the target terminal determines target channel information according to the first preferred channel, the method further includes:

the target terminal acquires a set of values of the channel quality information corresponding to the non-independent flow scheduling channel;

the target terminal judges whether the non-independent flow scheduling channel meets a fourth preset condition, and determines the second scheduling channel as an independent flow scheduling channel when the second scheduling channel in the non-independent flow scheduling channel meets the fourth preset condition, wherein the fourth preset condition is that the difference value between the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the second scheduling channel is smaller than a third set value, and the time kept smaller than the third set value is longer than or equal to a fifth preset time;

and the target terminal determines the number of the target channels and the identification of the target channels according to the independent flow scheduling channels, wherein the third set value is less than or equal to the second set value.

In this embodiment, the target terminal obtains a set of values of the non-independent flow scheduling channel corresponding to the channel quality channel, where the non-independent flow scheduling channel is a set of the second scheduling channel, and when a difference between the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the second scheduling channel is smaller than a third set value and the time kept smaller than the third set value is greater than or equal to a fifth preset time, the target terminal determines the second scheduling channel as the independent flow scheduling channel, and when the comparison between the remaining channels and the first preferred channel is completed, the target channel number and the target channel identifier in all channels may be obtained through statistics.

In addition, the fifth preset time may be set according to an actual working condition and a user requirement, and the embodiment of the present invention is not limited thereto.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a multi-stream scheduling apparatus according to an embodiment of the present invention, and as shown in fig. 7, a multi-stream scheduling apparatus 700 includes:

a sending module 701, configured to send a channel state information reference signal to a terminal in each downlink channel by a base station;

a determining module 702, configured to determine, by the base station, target channel information according to a quality condition of the csi reference signal of each channel, where the target channel information includes the number of target channels and an identifier of the target channel;

a scheduling module 703, configured to schedule, by the base station, the target channel for multi-stream transmission according to the target channel information.

Optionally, the determining module 702 includes:

a receiving unit 7021, configured to receive, by the base station, the target channel information sent by the target terminal, where the target channel information is obtained by measuring and comparing channel state information reference signal qualities of the downlink channels.

Optionally, the determining module 702 includes:

an obtaining unit 7022, configured to, based on channel quality information reported by the terminal, the base station, where the channel quality information includes at least one of the following: the signal-to-noise ratio of the channel state information reference signal corresponding to the target channel and the strength of the channel state information reference signal corresponding to the target channel;

a generating unit 7023, configured to generate, by the base station, the target channel information according to the channel quality information.

Referring to fig. 8, fig. 8 is a schematic structural diagram of another multiflow scheduling apparatus according to an embodiment of the present invention, and as shown in fig. 8, a multiflow scheduling apparatus 800 includes:

a first receiving module 801, configured to receive, by a target terminal, a state information reference signal sent from each channel of a base station, where the target terminal is an arbitrary terminal corresponding to the base station;

a first obtaining module 802, configured to measure and obtain channel quality information by the target terminal within a first preset time according to the state information reference signal;

a first determining module 803, configured to determine, by the target terminal, a first preferred channel based on the channel quality information;

a second determining module 804, configured to determine, by the target terminal, target channel information according to the first preferred channel, where the target channel information includes the number of target channels and an identifier of the target channel;

a first sending module 805, configured to send the target channel information to the base station by the target terminal.

Optionally, the first obtaining module 802 includes:

a first obtaining unit 8021, configured to measure and obtain, by the target terminal, quality information of a channel state information reference signal sent by the channel in the first preset time, where the channel quality information includes at least one of the following: the signal-to-noise ratio of the channel state information reference signal corresponding to the target channel and the strength of the channel state information reference signal corresponding to the target channel.

Optionally, the first determining module 803 includes:

a first determining unit 8031, configured to determine, by the target terminal, whether the channel quality information corresponding to the target channel meets a first preset condition within the first preset time, and determine, when the channel quality information corresponding to the target channel meets the first preset condition, the target channel as the first preferred channel, where the first preset condition is that, within the first preset time, a value of the channel quality information corresponding to the target channel is greater than a value of the channel quality information corresponding to any one of remaining channels, where the remaining channels are other channels excluding the target channel between the base station and the target terminal.

Optionally, the apparatus 800 further comprises:

a second obtaining module 806, configured to obtain, by the target terminal, the channel quality information corresponding to the remaining channels with a second preset time as a period;

a third determining module 807, configured to determine, by the target terminal, whether the remaining channel meets a second preset condition, and determine, when an alternative channel exists in the remaining channel and meets the second preset condition, the alternative channel as a preferred preparation channel, where the second preset condition is that a value of the channel quality information corresponding to the alternative channel is greater than a first set value compared to a value of the channel quality information corresponding to the first preferred channel, and a time that the value is greater than or equal to a third preset time is kept;

a first replacing module 808, configured to, by the target terminal, when the number of the preferred prepared channels is greater than 1, use a channel with a largest value corresponding to the channel quality information in the preferred prepared channels as a second preferred channel to replace the first preferred channel.

Optionally, the second determining module 804 includes:

a second determining unit 8041, configured to determine, by the target terminal, a difference set according to the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the remaining channels, where the difference set represents a difference set between the channel quality information of the remaining channels and the channel quality information of the first preferred channel, respectively;

a third determining unit 8042, configured to determine, by the target terminal, whether the remaining channel meets a third preset condition, and when a first scheduling channel exists in the remaining channel and meets the third preset condition, determine the first scheduling channel as a non-independent flow scheduling channel, where the third preset condition is that a difference between the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the first scheduling channel is greater than a second set value, and a time greater than or equal to a fourth preset time is kept;

a fourth determining unit 8043, configured to determine, by the target terminal, the number of target channels and the target channel identifier according to the non-independent flow scheduling channel.

Optionally, the apparatus 800 further comprises:

a third obtaining module 809, configured to obtain, by the target terminal, a set of values of the channel quality information corresponding to the non-independent flow scheduling channel;

a fourth determining module 810, configured to determine, by the target terminal, whether the non-independent flow scheduling channel meets a fourth preset condition, and when a second scheduling channel exists in the non-independent flow scheduling channel and meets the fourth preset condition, determine the second scheduling channel as an independent flow scheduling channel, where the fourth preset condition is that a difference between the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the second scheduling channel is smaller than a third set value, and a time that is kept smaller than the third set value is greater than or equal to a fifth preset time;

a fifth determining module 811, configured to determine, by the target terminal, the number of target channels and the target channel identifier according to the independent flow scheduling channel, where the third setting value is less than or equal to the second setting value.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 9, a base station 900 includes:

at least one processor 901; and

a memory 902 communicatively coupled to the at least one processor; wherein, the first and the second end of the pipe are connected with each other,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the processes of the embodiment of the multi-stream scheduling method of fig. 1.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 10, the electronic device 1000 includes:

at least one processor 1001; and

a memory 1002 communicatively coupled to the at least one processor; wherein the content of the first and second substances,

the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the processes of the embodiments of the multi-stream scheduling method described above.

In an embodiment of the present invention, a non-transitory computer-readable storage medium is provided, where computer instructions are stored, and the computer instructions are configured to enable the computer to perform various processes of the embodiment of the multi-stream scheduling method in fig. 1, and achieve the same beneficial effects, and are not described herein again.

In another embodiment of the present invention, a non-transitory computer-readable storage medium is provided, which stores computer instructions for causing a computer to perform the processes of the embodiment of the multi-stream scheduling method of fig. 2 and achieve the same advantageous effects, and the description thereof is omitted here.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present invention is not limited to performing the functions in the order discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, for example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (10)

1. A multi-stream scheduling method, comprising:

a base station sends a channel state information reference signal to a terminal in each downlink channel;

the base station determines target channel information according to the channel state information reference signal quality condition of each channel, wherein the target channel information comprises the number of target channels and the identification of the target channels;

and the base station schedules the target channel to carry out multi-stream transmission according to the target channel information.

2. The method of claim 1, wherein the base station determines the target channel information according to the csi-rs quality of each downlink channel, comprising:

and the base station receives the target channel information sent by the target terminal, and the target channel information is obtained by measuring and comparing the quality of the channel state information reference signal of each downlink channel.

3. The method of claim 1, wherein the base station determines the target channel information according to the csi-rs quality of each downlink channel, comprising:

the base station is based on the channel quality information reported by the terminal, and the channel quality information comprises at least one of the following items: the signal-to-noise ratio of the channel state information reference signal corresponding to the target channel and the strength of the channel state information reference signal corresponding to the target channel;

and the base station generates the target channel information according to the channel quality information.

4. A multi-stream scheduling method, comprising:

a target terminal receives a channel state information reference signal from each channel of a base station, wherein the target terminal is any terminal corresponding to the base station;

the target terminal measures and acquires channel quality information in a first preset time according to the channel state information reference signal;

the target terminal determines a first preferred channel based on the channel quality information;

the target terminal determines target channel information according to the first preferred channel, wherein the target channel information comprises the number of target channels and the identification of the target channels;

and the target terminal sends the target channel information to the base station.

5. The method of claim 4, wherein the obtaining of the channel quality information by the target terminal according to the channel state information reference signal sent by the channel within the first preset time includes:

the target terminal measures and acquires quality information of a channel state information reference signal sent by the channel within the first preset time, wherein the channel quality information comprises at least one of the following items: the signal-to-noise ratio of the channel state information reference signal corresponding to the target channel and the strength of the channel state information reference signal corresponding to the target channel.

6. The method of claim 4, wherein the target terminal determines a first preferred channel based on the channel quality information, comprising:

the target terminal judges whether the channel quality information corresponding to the target channel meets a first preset condition or not within the first preset time, and determines the target channel as the first preferred channel under the condition that the channel quality information corresponding to the target channel meets the first preset condition, wherein the first preset condition is that the value of the channel quality information corresponding to the target channel is larger than the value of the channel quality information corresponding to any channel in the rest channels within the first preset time, and the rest channels are other channels except the target channel between the base station and the target terminal.

7. The method of claim 6, wherein after the target terminal determines a first preferred channel based on the channel quality information, the method further comprises:

the target terminal acquires the channel quality information corresponding to the residual channels by taking second preset time as a period;

the target terminal judges whether the residual channel meets a second preset condition, and determines the alternative channel as a preferred preparation channel when the alternative channel in the residual channel meets the second preset condition, wherein the second preset condition is that the value of the alternative channel corresponding to the channel quality information is larger than a first set value compared with the value of the first preferred channel corresponding to the channel quality information, and the time kept to be longer than or equal to a third preset time;

and the target terminal takes the channel with the maximum value corresponding to the channel quality information in the preferred preparation channels as a second preferred channel to replace the first preferred channel when the number of the preferred preparation channels is greater than 1.

8. The method of claim 4, wherein the target terminal determines target channel information according to the first preferred channel, comprising:

the target terminal determines a difference value set according to the channel quality information corresponding to the first preferred channel and the channel quality information corresponding to the remaining channels, wherein the difference value set represents a difference value set of the remaining channels and the channel quality information of the first preferred channel respectively;

the target terminal judges whether the residual channels meet a third preset condition, and determines the first scheduling channel as a non-independent flow scheduling channel when the first scheduling channel in the residual channels meets the third preset condition, wherein the third preset condition is that the difference value between the channel quality information corresponding to a first preferred channel and the channel quality information corresponding to the first scheduling channel is greater than a second set value, and the time greater than or equal to a fourth preset time is kept;

and the target terminal determines the number of the target channels and the identification of the target channels according to the non-independent flow scheduling channels.

9. A multi-stream scheduling apparatus, comprising:

a sending module, configured to send, by a base station, a channel state information reference signal to a terminal in each downlink channel;

a determining module, configured to determine, by the base station, target channel information according to a channel state information reference signal quality condition of each channel, where the target channel information includes a number of target channels and an identifier of the target channel;

and the scheduling module is used for scheduling the target channel to perform multi-stream transmission by the base station according to the target channel information.

10. A multi-stream scheduling apparatus, comprising:

a first receiving module, configured to receive, by a target terminal, a state information reference signal sent from each channel of a base station, where the target terminal is an arbitrary terminal corresponding to the base station;

the first acquisition module is used for measuring and acquiring channel quality information by the target terminal within a first preset time according to the state information reference signal;

a first determining module, configured to determine, by the target terminal, a first preferred channel based on the channel quality information;

a second determining module, configured to determine, by the target terminal, target channel information according to the first preferred channel, where the target channel information includes the number of target channels and an identifier of the target channel;

a first sending module, configured to send the target channel information to the base station by the target terminal.

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