CN113676951B

CN113676951B - Aperiodic channel state information transmission method, aperiodic channel state information transmission device, base station and storage medium

Info

Publication number: CN113676951B
Application number: CN202111040048.1A
Authority: CN
Inventors: 张琼; 丁宝国; 陈林
Original assignee: Comba Network Systems Co Ltd
Current assignee: Comba Network Systems Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2023-09-26
Anticipated expiration: 2041-09-06
Also published as: CN113676951A

Abstract

The application relates to a non-periodic channel state information transmission method, a non-periodic channel state information transmission device, a base station and a storage medium. The aperiodic channel state information transmission method comprises the following steps: under the condition that a data packet arrival indication transmitted by an intelligent service control module is received, downlink control information DCI is carried out to trigger aperiodic channel state information A-CSI; the data packet arrival indication is obtained by processing data arrival information of the server management module through the intelligent service control module; the data arrival information is output when the server management module transmits the data packet to the user plane function module. The application reduces the time delay brought by the data request and the upper layer processing of the base station, so that the data packet can be timely triggered and the channel quality can be obtained when the data packet arrives.

Description

Aperiodic channel state information transmission method, aperiodic channel state information transmission device, base station and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a base station, and a storage medium for transmitting aperiodic channel state information.

Background

With the evolution of wireless communication technology, service diversity has grown, and mobile communication technology needs to be continuously enhanced to meet diversified communication requirements. The current 3gpp r15 protocol supports three traffic types: eMBB (Enhanced Mobile Broadband ), URLLC (Ultra-reliable and Low Latency Communications, high reliability and low latency communication) and eMTC (Massive Machine Type Communication, large scale machine type communication), R15 later trends gradually towards URLLC, meeting the needs of the vertical industry, AGV (Automated Guided Vehicle, unmanned carrier) and other scenarios.

Various enhanced functions are introduced for different scenarios or traffic demands, where channel state information feedback is a particularly important part of wireless communication systems. The 3gpp r15 protocol standard defines that aperiodic channel state information (Aperiodic Channel State Information, hereinafter referred to as a-CSI) can be fed back only through PUSCH (Physical Uplink Shared Channel ) channels, and the 3gpp r17 proposal mentions that a-CSI can be fed back through PUCCH (Physical Uplink Control Channel ) channels, and the above proposal mainly discusses a triggering mechanism, measurement resources, reporting resources, and the like of a-CSI. In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the existing trigger control scheme has the problems of poor timeliness and the like.

Disclosure of Invention

In view of the foregoing, it is desirable to provide a method, apparatus, base station, and storage medium for transmitting aperiodic channel state information that can ensure validity and timeliness.

In order to achieve the above object, in one aspect, an embodiment of the present application provides a method for transmitting aperiodic channel state information, including:

Under the condition that a data packet arrival indication transmitted by an intelligent service control module is received, downlink control information DCI is carried out to trigger aperiodic channel state information A-CSI;

the data packet arrival indication is obtained by processing data arrival information of the server management module through the intelligent service control module; the data arrival information is output when the server management module transmits the data packet to the user plane function module.

In one of the embodiments of the present invention,

the data packet arrival indication is output by the intelligent service control module based on the data service arrival prediction model; the data service arrival prediction model is that data arrival information is determined through machine learning by the intelligent service control module.

In one embodiment, the step of triggering the aperiodic CSI by the DCI includes:

acquiring the error rate of the received information; the receiving information comprises a response message fed back by the terminal;

and comparing the bit error rate with the target bit error rate, and determining whether to enable the aperiodic channel state information A-CSI triggered by the negative acknowledgement NACK according to the comparison result.

In one embodiment, the step of determining whether to enable aperiodic channel state information a-CSI triggered based on a negative acknowledgement NACK according to the comparison result includes:

If the error rate is larger than the target error rate, transmitting downlink control information DCI in the effective downlink time slot with the nearest receiving moment of each negative acknowledgement NACK to configure aperiodic channel state information A-CSI;

if the error rate is smaller than or equal to the target error rate, enabling aperiodic channel state information A-CSI triggered based on negative acknowledgement NACK by adopting a preset triggering rule; the preset trigger rule includes any one of a trigger criterion determined based on the statistical reception number of negative acknowledgement NACKs and a trigger criterion determined based on the number of negative acknowledgement NACKs.

In one embodiment, the step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgement NACK using a triggering criterion determined based on a statistical reception number of negative acknowledgement NACK includes:

counting the number of the continuous receiving negative acknowledgement NACK to obtain the counted receiving number;

if the counted number of received downlink control information DCI reaches a first threshold value, transmitting downlink control information DCI in the latest effective downlink time slot so as to configure aperiodic channel state information A-CSI;

a step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgement NACK, using a trigger criterion determined based on a number of negative acknowledgement NACK triggers, comprising:

Detecting the triggering times of triggering the aperiodic channel state information A-CSI based on the negative acknowledgement NACK;

and if the triggering times reach the second threshold value, starting a punishment period, and stopping triggering the aperiodic channel state information A-CSI until the punishment period is ended under the condition that negative acknowledgement NACK is received in the punishment period.

In one embodiment, the method further comprises the steps of:

determining channel measurement resources and data channel scheduling information;

determining the configuration of downlink control information DCI to PUCCH resources according to channel measurement resources, data channel scheduling information, A-CSI calculation time and HARQ-ACK calculation time; the configuration of the downlink control information DCI to the PUCCH resource comprises the steps of configuring the PUCCH resource for transmitting aperiodic channel state information A-CSI or configuring the PUCCH resource for transmitting the aperiodic channel state information A-CSI and hybrid automatic repeat request acknowledgement HARQ-ACK;

the A-CSI calculation time is the time from the downlink control information DCI triggering the aperiodic channel state information A-CSI to the physical uplink control channel PUCCH feeding back the aperiodic channel state information A-CSI; the HARQ-ACK calculation time is the time from receiving the PDSCH data of the physical downlink shared channel to replying the HARQ-ACK.

In one embodiment, the channel measurement resources comprise channel state information reference signal, CSI-RS, channel measurement resources; the data channel scheduling information comprises a scheduling mode and adjacent twice scheduling time intervals;

determining the configuration of downlink control information DCI to PUCCH resources according to channel measurement resources, data channel scheduling information, A-CSI calculation time and HARQ-ACK calculation time, wherein the step comprises the following steps:

if no data channel scheduling exists in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, configuring PUCCH resources for transmitting aperiodic channel state information A-CSI based on channel measurement resources;

if the data channel scheduling exists in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, determining the configuration of downlink control information DCI to the PUCCH resource based on the channel measurement resource and the HARQ-ACK calculation time.

An aperiodic channel state information transmission device comprising:

the triggering module is used for triggering the aperiodic channel state information A-CSI by downlink control information DCI under the condition that the arrival indication of the data packet transmitted by the intelligent service control module is received; the data packet arrival indication is obtained by processing data arrival information of the server management module through the intelligent service control module; the data arrival information is output when the server management module transmits the data packet to the user plane function module.

A base station comprises an intelligent service control module and a base station scheduler which are connected; the intelligent service control module is used for connecting with the server management module through an interface; the base station dispatcher is used for connecting with the server management module through the user plane function module;

the base station scheduler is adapted to implement the steps of the above method.

A computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the method described above.

One of the above technical solutions has the following advantages and beneficial effects:

in the application, the server management module indicates the arrival of the data packet to the intelligent service control module, and the intelligent service control module directly indicates the arrival of the data packet to the base station dispatcher, thereby ensuring the arrival time of the quick response data packet; when the data service arrives, the base station scheduler and the user plane function module process data in parallel, the data packet is processed by the user plane function module, the base station scheduler carries out DCI triggering A-CSI, the parallel processing can reduce time delay brought by upper protocol stack processing, and the effectiveness and timeliness of triggering A-CSI are ensured; the application reduces the time delay brought by the data request and the upper layer processing of the base station, so that the data packet can be timely triggered and the channel quality can be obtained when the data packet arrives.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.

FIG. 1 is a diagram of an application environment for a method of aperiodic channel state information transmission in one embodiment;

FIG. 2 is a flow chart of a method for transmitting aperiodic channel state information according to one embodiment;

FIG. 3 is a flow chart of combining DCI trigger A-CSI and NACK trigger A-CSI in an embodiment;

FIG. 4 is a flow diagram of trigger criteria based on statistics of received NACK in one embodiment;

FIG. 5 is a flow diagram of trigger criteria based on a penalty mechanism in one embodiment;

fig. 6 is a flowchart of a method for transmitting aperiodic csi in another embodiment;

fig. 7 is a schematic diagram of configuring only a-CSI PUCCH resources by DCI in one embodiment;

fig. 8 is a schematic diagram of the same resource as the HARQ PUCCH in DCI configuration a-CSI PUCCH in one embodiment;

Fig. 9 is a schematic diagram of DCI configuration a-CSI PUCCH resources in another embodiment;

fig. 10 is an internal structural diagram of a base station in one embodiment.

Detailed Description

In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.

As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.

The 3gpp r17 proposal proposes supporting a-CSI triggered based on downlink control information DCI (Downlink Control Information) and a-CSI triggered based on NACK (Negative Acknowledgement), but does not point out a specific trigger control scheme. Based on the DCI triggered A-CSI, in the URLLC scene, the service requirement is high reliability and low delay, and then a timely and effective triggering scheme is very necessary. The A-CSI mechanism based on NACK triggering is effective for the transmission of the URLLC sporadic small data packets, and can be applied to semi-static data transmission, and the data scheduling mode is one of common means for meeting the high-reliability low-delay targets of the URLLC. However, the conventional triggering method has problems of inaccuracy and poor reliability.

Meanwhile, the transmission of a-CSI on PUCCH, the reference in the R17 proposal to a-CSI on PUCCH may use the same resource as HARQ (Hybrid Automatic Repeat reQuest ) -ACK (Acknowledgement), or both may each use an independent PUCCH resource (separately DCI indication). Several reporting mechanisms of a-CSI on PUCCH are mentioned in the prior art, such as: when the PUCCH A-CSI collides with the PUSCH A-CSI, discarding the PUCCH A-CSI; when the PUCCH A-CSI collides with the PPUCCH for transmitting the HARQ-ACK or SR (Scheduling Request ), the PUCCH A-CSI is discarded; when the PUCCH A-CSI collides with the PUCCH P-CSI (Periodic CSI), the PUCCH P-CSI is discarded (the priority of the A-CSI is higher than that of the P-CSI), and the reporting mechanisms of the PUCCH A-CSI are very likely to cause unreliable transmission of the PUCCH A-CSI. It is also known to trigger a-CSI by transmitting multiple DCIs to avoid some of the DCIs triggered a-CSI from missing, but this causes the problem of increased DCI overhead.

In the application, the base station scheduler and the intelligent service control module process data in parallel, and when the data arrives, the intelligent service control module directly indicates the arrival of the data to the base station scheduler, and the base station scheduler carries out DCI triggering A-CSI; the time delay brought by the processing of an upper protocol stack at the base station side is reduced, and the trigger A-CSI can be started immediately once a data packet arrives, so that the channel quality is acquired in time; meanwhile, the base station scheduler of the application provides an intelligent control mode for jointly triggering the A-CSI through DCI triggering the A-CSI and NACK triggering the A-CSI, and enhances the effectiveness of the A-CSI.

In addition, the base station configures a channel measurement resource of a Reference Signal (CSI-RS) and determines scheduling information of a data channel; the base station determines whether the UE is an independent PUCCH resource or a shared PUCCH resource by combining the CSI computing time and the HARQ-ACK computing time required by the UE through the channel state information reference signal (CSI-RS) channel measurement resource and the determined data channel scheduling information. The feedback scheme of the PUCCH A-CSI is particularly suitable for multi-UE PUCCH resource allocation, and unreasonable resource allocation is avoided.

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

The aperiodic channel state information transmission method provided by the application can be applied to an application environment shown in fig. 1. The intelligent service control module is connected with the server management module and is used for predicting the arrival of the data service; in one example, the intelligent service control module may interface with the server management module;

In fig. 1, the base station scheduler is configured to connect to the server management module through the user plane function module, specifically, an upper layer protocol stack and RAN (Radio Access Network ) are further included between the base station scheduler and the user plane function module, and a data packet of the server management module processes data through the user plane function module and is then scheduled based on data on the RAN side. In one example, the upper layer protocol stack may include an SDAP (Service Data Adaptation Protocol ), PDCP (Packet Data Convergence Protocol, packet data convergence protocol), and RLC layer (Radio Link Control, radio Link control layer), among others.

It should be noted that, the UE (User Equipment) in the present application is not limited to the 5G network, and includes: cell phones, internet of things equipment, smart home equipment, industrial control equipment, vehicle equipment and the like. The User equipment may also be referred to as a Terminal (Terminal), a Terminal Device (Terminal Device), a Mobile Station (Mobile Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and is not limited herein. The user equipment may also be an automobile in Vehicle-To-Vehicle (V2V) communication, a machine in machine type communication, or the like.

In addition, the base station to which the present application relates may be a Base Station (BS) device deployed in a radio access network to provide a UE with a wireless communication function, including various forms of macro base stations, micro base stations, relay stations, controllers, access points, and so on. In systems employing different radio access technologies, the names of devices with base station functions may be different, for example, in LTE networks, referred to as evolved NodeB (eNB), in third generation 3G networks, referred to as Node B (Node B), or communication nodes applied in fifth generation communication systems, NR base stations, etc., and other similar network devices.

The aperiodic channel state information transmission method provided by the application can be applied to LTE systems, LTE Advanced (LTE-A) systems or other wireless communication systems adopting various wireless access technologies, such as systems adopting access technologies of code division multiple access, frequency division multiple access, time division multiple access, orthogonal frequency division multiple access, carrier aggregation (Carrier Aggregation, CA) and the like. In addition, the method can also be suitable for using subsequent evolution systems, such as a fifth generation 5G system and the like. Specifically, the application is suitable for 5G NR communication systems, and is especially suitable for URLLC application scenes.

In one embodiment, as shown in fig. 2, there is provided a method for transmitting aperiodic channel state information, which is described by taking as an example that the method is applied to the base station scheduler in fig. 1, and includes the following steps:

step 202, under the condition that the packet arrival indication transmitted by the intelligent service control module is received, downlink control information DCI is performed to trigger aperiodic channel state information a-CSI.

Specifically, based on the data arrival information, the server management module indicates the arrival of the data packet to the intelligent service control module; based on the data packet arrival indication, the intelligent service control module directly indicates the arrival of the data packet to the base station scheduler; when data service arrives, the base station scheduler and the user plane function module process data in parallel, and the base station scheduler carries out DCI triggering A-CSI.

Further, when the server management module has data, the data is indicated to the intelligent service control module, and the intelligent service control module directly indicates the arrival of the data to the base station dispatcher; the base station scheduler does not process the SDAP, PDCP, RLC layers and the like of the upper protocol stack, and performs DCI triggering A-CSI; meanwhile, the server management module transmits the data packet to the user plane function module, the data packet is processed by the user plane function module, and then the data packet is scheduled based on the RAN side. The parallel processing can reduce the time delay brought by the upper protocol stack processing and ensure the effectiveness and timeliness of triggering the A-CSI.

Based on the application, when the data of the server management module arrives, the intelligent service control module directly indicates the data to the base station dispatcher, the base station dispatcher carries out DCI triggering A-CSI, the time delay brought by processing an upper layer protocol stack at the base station side is reduced, and the triggering A-CSI can be immediately started once the data packet arrives, thereby timely acquiring the channel quality.

In one embodiment, the packet arrival indication is output by the intelligent traffic control module based on the data traffic arrival prediction model; the data service arrival prediction model is that data arrival information is determined through machine learning by the intelligent service control module.

Specifically, the intelligent service control module in the application combines machine learning to determine a data service arrival prediction model, and further indicates the arrival of base station scheduler data according to the data service arrival prediction model to trigger the DCI to A-CSI.

For the data arrival information of the server management module, the intelligent service control module can determine a data service arrival prediction model through machine learning. In the application, the intelligent service control module predicts the service arrival through learning and then instructs the base station scheduler to schedule and trigger the A-CSI, thereby reducing the time delay of the data service request from the application layer, which is equivalent to ensuring the effectiveness of the A-CSI by triggering the A-CSI feedback in time.

The intelligent service control module directly instructs the base station scheduler to trigger the DCI to A-CSI, so that time delay brought by data request and upper layer processing of the base station is reduced, and the data packet can be timely triggered and channel quality can be obtained when coming.

In one embodiment, as shown in fig. 3, the step of triggering aperiodic channel state information a-CSI by downlink control information DCI includes:

step S302, obtaining the error rate of the received information; the receiving information comprises a response message fed back by the terminal;

step S304, comparing the bit error rate with the target bit error rate, and determining whether to enable the aperiodic channel state information A-CSI triggered by the negative acknowledgement NACK according to the comparison result.

Specifically, the base station scheduler can combine DCI trigger A-CSI and NACK trigger A-CSI, and combine the information receiving situation to perform NACK trigger A-CSI based on the information receiving situation, so that the effectiveness of the A-CSI is enhanced.

The base station scheduler obtains the bit error rate of the received information, which bit error rate (Symbol Error Rate, SER) may be an indicator for measuring the accuracy of the data transmission over a defined time period, in some examples bit error rate = 100% of the bit error in transmission/total number of codes transmitted; and the received information may include an acknowledgement message fed back by the terminal, and the acknowledgement message may be a forward acknowledgement ACK or a negative acknowledgement NACK. I.e. corresponding to the ACK or NACK fed back by the UE to the base station. The base station dispatcher judges the error rate condition of the received information and further determines whether the A-CSI triggered based on NACK is enabled. Based on the application, the A-CSI can be triggered based on NACK in combination with the information receiving condition, so that an intelligent control scheme for jointly triggering the A-CSI is realized, and the effectiveness of the A-CSI can be enhanced.

Specifically, when the error rate is lower than the target error rate, the occurrence of negative acknowledgement NACK does not necessarily indicate poor channel quality or inaccurate modulation coding mode, and the like, and if the significance of triggering NACK-based a-CSI is not great at this time. In this regard, the base station of the present application proposes a control policy including a preset trigger rule to enhance the validity of the a-CSI, where the preset trigger rule may include any one of a trigger criterion determined based on the number of statistical receptions of the negative acknowledgement NACKs and a trigger criterion determined based on the number of negative acknowledgement NACKs.

The base station dispatcher judges the error rate condition of the received information and enables the A-CSI triggered on the basis of NACK; triggering the A-CSI if the error rate is greater than the target error rate; otherwise, the base station scheduler combines NACK statistics of the received information, or enables the A-CSI based on NACK triggering based on a certain punishment mechanism, so that the A-CSI based on NACK triggering is not always enabled.

In one embodiment, as shown in fig. 4, the step of enabling the aperiodic channel state information a-CSI triggered based on the negative acknowledgement NACK using a triggering criterion determined based on the statistical reception number of the negative acknowledgement NACK includes:

specifically, fig. 4 shows a trigger criterion based on the statistics of the received NACKs. The base station side counts the number of the continuously received NACKs, and after the number reaches a first threshold value (i.e., m in fig. 4), the downlink control information DCI is sent in the latest valid downlink time slot. For example, assuming that the first threshold is 5, the base station side continuously receives 5 NACKs, and then sends downlink control information DCI in the latest valid downlink time slot to configure aperiodic channel state information a-CSI; if the base station side continuously receives 4 NACKs and receives an ACK on the 5 th time, downlink control information DCI is not sent, and a-CSI is triggered.

In one embodiment, as shown in fig. 5, the step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgement NACK, using a trigger criterion determined based on the number of negative acknowledgement NACK triggers, includes:

Specifically, the base station side detects the triggering times based on the non-periodic channel state information A-CSI triggered by negative acknowledgement NACK, and enters a punishment period when the triggering times reach a second threshold value, and in the punishment period, even if the base station side detects NACK, the base station side does not perform triggering operation until the punishment period is over; in some examples, the setting of the penalty period may be done in a manner that configures a penalty timer.

As shown in fig. 5, a penalty timer may be configured first, in which the base station side triggers the a-CSI based on the detected NACK during the period of error rate statistics, and when the number of triggers reaches a second threshold (i.e., the nth time in fig. 5, i.e., the number of triggers is n), the penalty timer is started to enter a penalty period, and in the penalty period, even if the base station side detects the NACK, no trigger operation is performed; the above steps are repeated until the timer times out (i.e., until the penalty period ends). An exemplary supplementary note that assuming a penalty period of 50 milliseconds, the time of the penalty timer is set to 50 milliseconds; in the error rate statistics time period (which can be set to be 50 milliseconds or more), the base station side does not start the penalty timer because the number of times of detecting NACK to trigger the A-CSI is 5 times, namely the second threshold value is 6 times, if the base station side detects that the number of times of detecting the A-CSI in the error rate statistics time period reaches 6 times, the penalty timer is started when the 6 th time is detected, the penalty timer is started in 50 milliseconds of the penalty time period, and the penalty timer is started to be closed until the penalty timer is started in 50 milliseconds, and even if the base station detects NACK, downlink control information DCI is not sent, and the A-CSI is not triggered.

In the above, the application provides an enhanced aperiodic CSI transmission scheme, which combines wireless intelligent control, and processes data in parallel with a user plane function module through a base station scheduler, and the base station scheduler performs DCI triggering a-CSI, so as to ensure the reliability and effectiveness of triggering a-CSI. In addition, the base station scheduler combines DCI triggering A-CSI and NACK triggering A-CSI, so that the channel quality can be timely and effectively obtained no matter the URLLC application scene is heavy-load or light-load, and the effectiveness and reliability of A-CSI transmission are improved.

In one embodiment, as shown in fig. 6, there is provided a non-periodic channel state information transmission method, which is illustrated by taking as an example that the method is applied to the base station scheduler in fig. 1, and includes the following steps:

step S602, under the condition that a data packet arrival indication transmitted by an intelligent service control module is received, downlink control information DCI is performed to trigger aperiodic channel state information A-CSI;

the data packet arrival indication is output by the intelligent service control module based on the data service arrival prediction model; the data service arrival prediction model is that data arrival information is determined by machine learning through an intelligent service control module; the data arrival information is output when the server management module transmits the data packet to the user plane function module.

Step S604, determining channel measurement resources and data channel scheduling information;

step S606, determining the configuration of downlink control information DCI to PUCCH resources according to channel measurement resources and data channel scheduling information, and A-CSI calculation time and HARQ-ACK calculation time; the configuration of the downlink control information DCI to the PUCCH resource comprises the steps of configuring the PUCCH resource for transmitting aperiodic channel state information A-CSI or configuring the PUCCH resource for transmitting the aperiodic channel state information A-CSI and hybrid automatic repeat request acknowledgement HARQ-ACK;

Specifically, in the process of triggering the aperiodic channel state information a-CSI by the downlink control information DCI, the error rate of the received information may be compared with the target error rate, and according to the comparison result, whether to enable the aperiodic channel state information a-CSI triggered by the negative acknowledgement NACK is determined, so as to enhance the effectiveness of the a-CSI.

Further, the base station may configure channel measurement resources and determine data channel scheduling information; and the base station determines whether the PUCCH resources are independent or common by combining the A-CSI calculation time and the HARQ-ACK calculation time required by the UE through the channel measurement resources and the determined data channel scheduling information. The base station can flexibly carry out DCI configuration and manage the PUCCH resources, and the resource waste of the reserved PUCCH when no data scheduling exists is avoided.

In the application, the base station scheduler can combine the data service arrival prediction model to determine the configuration of the downlink control information DCI to the PUCCH resource. In some examples, when no data scheduling is confirmed in combination with the data traffic arrival prediction model, the configuration of the PUCCH resources by the downlink control information DCI includes configuring the PUCCH resources for transmitting aperiodic channel state information a-CSI, i.e., the DCI configures only the a-CSI PUCCH;

in some examples, when the data traffic arrival prediction model is combined to confirm that there is data scheduling, the configuration of the PUCCH resource by the downlink control information DCI includes configuring the PUCCH resource for transmitting aperiodic channel state information a-CSI and hybrid automatic repeat request acknowledgement HARQ-ACK, that is, combining the data scheduling time and the base station triggering a-CSI time, determining that the DCI indicates the same resource as the a-CSI PUCCH and the HARQ PUCCH, or indicates independent resources of the a-CSI PUCCH and the HARQ PUCCH.

It should be noted that, the a-CSI calculation time is a time from triggering the aperiodic channel state information a-CSI by the downlink control information DCI to feeding back the aperiodic channel state information a-CSI by the physical uplink control channel PUCCH, that is, the a-CSI calculation time may refer to a time from triggering the DCI to feeding back the a-CSI. Furthermore, the application adopts T1 to refer to A-CSI calculation time, and when the base station side needs to trigger A-CSI, the time interval from DCI triggering to A-CSI PUCCH is T1.

And the HARQ-ACK calculation time may be a time from receiving PDSCH data of the physical downlink shared channel to replying to the HARQ-ACK, i.e., the HARQ-ACK calculation time is a time from receiving PDSCH (Physical Downlink Shared Channel ) data to calculating to reply to the HARQ-ACK by the terminal. Furthermore, the application adopts T3 to refer to HARQ-ACK calculation time, namely, the time interval from PDSCH scheduling information to HARQ-ACK PUCCH is T3.

In one embodiment, the channel measurement resources may include channel state information reference signal CSI-RS channel measurement resources; the data channel scheduling information comprises a scheduling mode and adjacent twice scheduling time intervals;

Specifically, the base station configures CSI-RS (Reference Signal) channel measurement resources and determines data channel scheduling information. When the time of data channel scheduling by the base station is different from the time of base station triggering A-CSI by a fixed time, DCI is required to be configured with A-CSI and HARQ-ACK at the same time; if there is no data channel scheduling within a fixed interval, the DCI configures only the A-CSI.

Further, the base station scheduler combines the data service arrival prediction model, and DCI only configures A-CSI PUCCH when no data scheduling exists; when data scheduling exists, combining the data scheduling time and the base station triggering A-CSI time, determining that DCI indicates the same resource of A-CSI PUCCH and HARQ PUCCH or indicates independent resources of A-CSI PUCCH and HARQ PUCCH.

In the data channel scheduling information determined by the base station, the scheduling mode can be a dynamic scheduling mode or a semi-static scheduling mode, the specific time interval is controlled by a base station side scheduler, and the time interval of two times of scheduling is set to be Tsch, namely, the time interval of two adjacent times of scheduling is set to be Tsch.

To further illustrate aspects of the application, a specific example is described below. The CSI-RS channel measurement resources are known at the base station side, and the present application is not particularly limited thereto.

When a base station side needs to trigger A-CSI, the DCI is triggered to an A-CSI PUCCH time interval of T1 (namely A-CSI calculation time), the time interval from a CSI-RS channel measurement resource to the A-CSI PUCCH is T2, and the time interval from PDSCH scheduling information to an HARQ-ACK PUCCH is T3 (namely HARQ-ACK calculation time); in addition, a PDSCH calculation time may also be acquired, which may refer to: the time from when the scheduling information is transmitted to when the terminal receives PDSCH data.

Further, the application can determine whether the data channel scheduling exists in the T1 time interval according to the sizes of T1 and Tsch; when the adjacent twice scheduling time interval Tsch is far greater than T1, determining that no data channel scheduling exists in the T1 time interval; and when Tsch is not greater than T1, determining that there is data channel scheduling in the T1 time interval.

As shown in fig. 7, if the base station has no scheduling data to transmit, the DCI configures only the a-CSI PUCCH resource. Specifically, the scheduling information determined by the base station has no data channel scheduling information in the time interval T1, i.e. Tsch is far greater than T1; t2 is not less than the A-CSI calculation time (T2 is more than or equal to T1), and DCI only configures A-CSI PUCCH.

As shown in fig. 8, the base station has scheduling data to transmit, and the DCI configures the same resource as the a-CSI PUCCH and the HARQ PUCCH; specifically, the base station determines scheduling information, a scheduling result exists between the DCI indication and the CSI-RS resource, T2 is not less than A-CSI calculation time (T2 is not less than T1), T3 is not less than PDSCH calculation time, and the same resource of the DCI indication A-CSI PUCCH and the HARQ PUCCH is determined; namely, the same DCI is adopted to configure the A-CSI PUCCH and the HARQ PUCCH, and the two share PUCCH resources.

As shown in fig. 9, the base station has scheduling data to transmit, and DCI configures an a-CSI PUCCH resource; specifically, according to the scheduling information determined by the base station, a scheduling result exists between the DCI indication and the CSI-RS resource, T2 is not less than the A-CSI calculation time (T2 is not less than T1), T3 is less than the PDSCH calculation time, and it is determined that the DCI is only configured to indicate the A-CSI PUCCH, namely, the A-CSI PUCCH and the HARQ PUCCH use independent resources respectively. The method is equivalent to that the base station side does not reserve the PUCCH resources of the UE, so that resource waste caused by reservation of the PUCCH resources when no scheduling result exists is avoided, and PUCCH resource allocation of other UEs is influenced;

Above, the base station configures the CSI-RS channel measurement resource and determines the data channel scheduling information; the base station determines whether the UE is an independent PUCCH resource or a shared PUCCH resource according to channel state information reference signal (CSI-RS) channel measurement resources and the determined data channel scheduling information and combining the A-CSI calculation time and the HARQ-ACK calculation time required by the UE. The feedback scheme of the PUCCH A-CSI is particularly suitable for multi-UE PUCCH resource allocation, and unreasonable resource allocation is avoided.

It should be understood that, although the steps in the flowcharts of fig. 2, 3 and 6 are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least some of the steps of fig. 2, 3, and 6 may include multiple sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, nor does the order in which the sub-steps or stages are performed necessarily occur sequentially, but may be performed alternately or alternately with other steps or at least a portion of the sub-steps or stages of other steps.

In one embodiment, there is provided an aperiodic channel state information transmission device including:

In one embodiment, the triggering module may include:

the error rate acquisition module is used for acquiring the error rate of the received information; the receiving information comprises a response message fed back by the terminal;

the comparison module is used for comparing the bit error rate with the target bit error rate;

and the strategy execution module is used for determining whether the aperiodic channel state information A-CSI triggered based on the negative acknowledgement NACK is enabled or not according to the comparison result.

In one embodiment, the policy enforcement module is configured to:

if the counted number of received downlink control information DCI reaches a first threshold value, transmitting downlink control information DCI in an effective downlink time slot nearest to the receiving time of the next negative acknowledgement NACK so as to configure aperiodic channel state information A-CSI;

or alternatively, the first and second heat exchangers may be,

In one embodiment, the method further comprises:

an information determining module for determining channel measurement resources and data channel scheduling information;

the resource allocation module is used for determining the allocation of downlink control information DCI to PUCCH resources according to channel measurement resources, data channel scheduling information, A-CSI calculation time and HARQ-ACK calculation time; the configuration of the downlink control information DCI to the PUCCH resource comprises the steps of configuring the PUCCH resource for transmitting aperiodic channel state information A-CSI or configuring the PUCCH resource for transmitting the aperiodic channel state information A-CSI and hybrid automatic repeat request acknowledgement HARQ-ACK;

In one embodiment, the channel measurement resources comprise channel state information reference signal, CSI-RS, channel measurement resources; the data channel scheduling information comprises a scheduling mode and adjacent twice scheduling time intervals; the scheduling mode is dynamic scheduling or semi-static scheduling;

The resource allocation module is used for: if no data channel scheduling exists in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, configuring PUCCH resources for transmitting aperiodic channel state information A-CSI based on channel measurement resources; and if the data channel scheduling exists in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, determining the configuration of downlink control information DCI to the PUCCH resource based on the channel measurement resource and the HARQ-ACK calculation time.

The specific limitation of the aperiodic channel state information transmission device can be referred to as limitation of the aperiodic channel state information transmission method hereinabove, and will not be described herein. The respective modules in the above-described aperiodic channel state information transmission device may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules. It should be noted that, in the embodiment of the present application, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.

In one embodiment, as shown in fig. 10, a base station is provided, including an intelligent service control module and a base station scheduler connected; the intelligent service control module is used for connecting with the server management module through an interface; the base station dispatcher is used for connecting with the server management module through the user plane function module;

the base station scheduler is used for realizing the non-periodic channel state information transmission method.

Specifically, the server management module indicates the arrival of the data packet to the intelligent service control module through the interface, and the intelligent service control module directly indicates the arrival of the data packet to the base station scheduler; when the data service arrives, the base station scheduler and the user plane function module process the data in parallel, and the base station scheduler carries out DCI triggering A-CSI; the time delay brought by the processing of the upper protocol stack of the base station is reduced, and the effectiveness and timeliness of triggering A-CSI are ensured;

the intelligent service control module is combined with the machine learning and prediction model to determine that the data service arrives at the prediction model; according to the data service arrival prediction model, a base station scheduler is indicated to arrive a data packet, and the base station scheduler performs DCI triggering A-CSI, so that the time delay caused by data request and processing of an upper protocol stack of a base station is reduced;

In addition, the base station scheduler can combine DCI trigger A-CSI and NACK trigger A-CSI, and the base station scheduler combines the information receiving condition to perform the NACK trigger A-CSI based on the information receiving condition, so that the effectiveness of the A-CSI is enhanced;

the base station scheduler judges the error rate condition of the received information and enables the A-CSI triggered on the basis of NACK; triggering the A-CSI if the received error rate is greater than the target error rate; otherwise, the base station scheduler combines NACK statistics of the received information, or enables the A-CSI based on NACK triggering based on a certain punishment mechanism, so that the A-CSI based on NACK triggering is not always enabled.

Finally, the base station scheduler configures CSI-RS channel measurement resources and determines data channel scheduling information; the base station side simultaneously combines the A-CSI calculation time and the HARQ-ACK calculation time required by the UE through the CSI-RS channel measurement resource and the determined data channel scheduling information to determine whether the UE is an independent PUCCH resource or a shared PUCCH resource. The base station scheduler combines the data service arrival prediction model, and DCI only configures an A-CSI PUCCH when no data scheduling exists; when data scheduling exists, combining the data scheduling time and the base station triggering A-CSI time, determining that DCI indicates the same resource of A-CSI PUCCH and HARQ PUCCH or indicates independent resources of A-CSI PUCCH and HARQ PUCCH. When the time of the base station for scheduling the data channel is different from the time of triggering the A-CSI by the base station by a fixed time, DCI is required to be configured with the A-CSI PUCCH and the HARQ-ACK PUCCH at the same time; if there is no data channel scheduling within a fixed interval, the DCI configures only the A-CSI PUCCH.

In the application, a base station scheduler and a user plane function module process data in parallel, and the base station scheduler carries out DCI triggering A-CSI; the processing time delay of an upper protocol stack at the base station side is reduced, and the arrival time of a quick response data packet is ensured; meanwhile, the base station scheduler combines DCI triggering A-CSI and NACK triggering A-CSI, so that the channel quality can be timely and effectively obtained no matter the UE is in heavy load or light load for URLLC application scenes, and the effectiveness and reliability of A-CSI transmission are improved.

Further, the base station determines whether the base station is an independent PUCCH resource or a shared PUCCH resource by combining the CSI-RS resource position and the data channel scheduling information and combining the A-CSI calculation time and the HARQ-ACK calculation time required by the UE. The base station can flexibly carry out DCI configuration and manage the PUCCH resources, and the resource waste of the reserved PUCCH when no data scheduling exists is avoided.

In one embodiment, a computer readable storage medium is provided, on which a computer program is stored which, when executed by a processor, implements the steps of the above-described aperiodic channel state information transmission method.

Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.

In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.

The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.

Claims

1. The aperiodic channel state information transmission method is characterized by being applied to a base station scheduler, wherein the base station scheduler is connected with a server management module through a user plane function module, the base station scheduler is connected with an intelligent service control module, the intelligent service control module is connected with the server management module, and an upper protocol stack and a RAN are further arranged between the base station scheduler and the user plane function module; the base station scheduler and the user plane function module process data in parallel, and the base station scheduler and the intelligent service control module process data in parallel; the method comprises the following steps:

under the condition that a data packet arrival indication transmitted by the intelligent service control module is received, downlink control information DCI is conducted to trigger aperiodic channel state information A-CSI;

the data packet arrival indication is obtained by processing the data arrival information of the server management module through the intelligent service control module; the data arrival information is output under the condition that the server management module transmits the data packet to the user plane function module.

2. The method for aperiodic channel state information transmission according to claim 1,

The data packet arrival indication is output by the intelligent service control module based on a data service arrival prediction model; the data service arrival prediction model is that the data arrival information is determined through machine learning by the intelligent service control module.

3. The method for transmitting aperiodic channel state information according to claim 1 or 2, wherein the step of performing downlink control information DCI to trigger aperiodic channel state information a-CSI comprises:

acquiring the error rate of the received information; the received information comprises a response message fed back by the terminal;

and comparing the bit error rate with the target bit error rate, and determining whether the aperiodic channel state information A-CSI triggered based on negative acknowledgement NACK is enabled according to the comparison result.

4. The aperiodic channel state information transmission method according to claim 3, wherein the step of determining whether to enable the aperiodic channel state information a-CSI triggered based on the negative acknowledgement NACK according to the comparison result comprises:

if the bit error rate is greater than the target bit error rate, transmitting the downlink control information DCI in the effective downlink time slot with the nearest receiving moment of each negative acknowledgement NACK so as to configure the aperiodic channel state information A-CSI;

If the error rate is smaller than or equal to the target error rate, enabling aperiodic channel state information A-CSI triggered based on negative acknowledgement NACK by adopting a preset triggering rule; the preset triggering rule comprises any one of triggering criteria determined based on the statistic receiving number of the negative acknowledgement NACK and triggering criteria determined based on the number of the negative acknowledgement NACK triggering times.

5. The method for aperiodic channel state information transmission according to claim 4,

and enabling aperiodic channel state information A-CSI triggered by the negative acknowledgement NACK by adopting the triggering criterion determined by the statistical receiving number based on the negative acknowledgement NACK, wherein the method comprises the following steps:

counting the number of the continuous Negative Acknowledgement (NACK) to obtain the counted number;

if the counted number of received data reaches a first threshold value, transmitting the downlink control information DCI in the latest effective downlink time slot so as to configure the aperiodic channel state information A-CSI;

the step of enabling the aperiodic channel state information A-CSI triggered by the negative acknowledgement NACK based on the triggering criterion determined by the number of times of the negative acknowledgement NACK, comprises the following steps:

And if the triggering times reach a second threshold value, starting a punishment period, and stopping triggering the aperiodic channel state information A-CSI until the punishment period is ended under the condition that negative acknowledgement NACK is received in the punishment period.

6. The aperiodic channel state information transmission method according to claim 1 or 2, further comprising the steps of:

determining the configuration of downlink control information DCI to PUCCH resources according to the channel measurement resources, the data channel scheduling information, the A-CSI calculation time and the HARQ-ACK calculation time; configuring the Downlink Control Information (DCI) on a PUCCH resource comprises configuring the PUCCH resource for transmitting the aperiodic channel state information (A-CSI) or configuring the PUCCH resource for transmitting the aperiodic channel state information (A-CSI) and hybrid automatic repeat request (HARQ-ACK);

7. The aperiodic channel state information transmission method according to claim 6, wherein the channel measurement resources comprise channel state information reference signal CSI-RS channel measurement resources; the data channel scheduling information comprises a scheduling mode and adjacent twice scheduling time intervals;

the step of determining the configuration of the downlink control information DCI to the PUCCH resource according to the channel measurement resource, the data channel scheduling information, the A-CSI calculation time and the HARQ-ACK calculation time comprises the following steps:

if no data channel scheduling exists in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, configuring the PUCCH resource for transmitting the aperiodic channel state information A-CSI based on the channel measurement resource;

if it is determined that there is data channel scheduling in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, determining configuration of downlink control information DCI to PUCCH resources based on the channel measurement resources and the HARQ-ACK calculation time.

8. The aperiodic channel state information transmission device is characterized by being applied to a base station scheduler, wherein the base station scheduler is used for being connected with a server management module through a user plane function module, the base station scheduler is connected with an intelligent service control module, the intelligent service control module is connected with the server management module, and an upper protocol stack and a RAN (radio access network) are further arranged between the base station scheduler and the user plane function module; the base station scheduler and the user plane function module process data in parallel, and the base station scheduler and the intelligent service control module process data in parallel; the device comprises:

The triggering module is used for triggering the aperiodic channel state information A-CSI by downlink control information DCI under the condition that the arrival indication of the data packet transmitted by the intelligent service control module is received;

9. The base station is characterized by comprising an intelligent service control module and a base station scheduler which are connected; the intelligent service control module is used for being connected with the server management module through an interface; the base station dispatcher is used for connecting the server management module through a user plane function module;

the base station scheduler being adapted to implement the steps of the method of any of claims 1 to 7.

10. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the method of any of claims 1 to 7.