CN113676951A

CN113676951A - Aperiodic channel state information transmission method, device, base station and storage medium

Info

Publication number: CN113676951A
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: 2021-11-19
Anticipated expiration: 2041-09-06
Also published as: CN113676951B

Abstract

The application relates to an aperiodic channel state information transmission method, an aperiodic channel state information transmission device, a base station and a storage medium. The aperiodic channel state information transmission method comprises the following steps: triggering aperiodic channel state information A-CSI by Downlink Control Information (DCI) under the condition of receiving a data packet arrival indication transmitted by an intelligent service control module; 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. According to the method and the device, time delay caused by data request and upper layer processing of the base station is reduced, and the data packet can be triggered and the channel quality can be acquired in time when arriving.

Description

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

Technical Field

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

Background

With the evolution of wireless communication technology, service diversity is increasing, and mobile communication technology needs to be enhanced continuously to meet diversified communication requirements. The current 3GPP R15 protocol supports three traffic types: enhanced Mobile Broadband (Enhanced Mobile Broadband), universal-link control (URLLC) (high-reliable and Low-delay Communication) and universal Machine Type Communication (eMTC) (Massive Machine Type Communication), R15 has gradually tended to URLLC later, and meets the requirements of vertical industry and Automated Guided Vehicle (Automated Guided Vehicle) in the same scene.

Various enhanced functions are introduced when addressing different scenarios or traffic needs, wherein channel state information feedback is an especially important part of a wireless communication system. The 3GPP R15 protocol standard defines that Aperiodic Channel State Information (a-CSI) can only be fed back through a PUSCH (Physical Uplink Shared Channel), and the 3GPP R17 proposal mentions that a-CSI can be fed back through a PUCCH (Physical Uplink Control Channel), and the above proposal mainly discusses a-CSI triggering mechanism, measurement resources, reporting resources, and the like. In the implementation process, the inventor finds that at least the following problems exist in the conventional technology: the current 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 an aperiodic csi transmitting method, an aperiodic csi transmitting apparatus, a base station, and a storage medium, which can ensure validity and timeliness.

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

triggering aperiodic channel state information A-CSI by Downlink Control Information (DCI) under the condition of receiving a data packet arrival indication transmitted by an intelligent service control module;

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, the first and second electrodes are,

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 determined by machine learning through the intelligent service control module for data arrival information.

In one embodiment, the step of triggering aperiodic channel state information a-CSI by downlink control information DCI includes:

acquiring the error rate of received information; receiving a response message of which the information comprises terminal feedback;

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

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

if the error rate is greater than the target error rate, sending downlink control information DCI at each effective downlink time slot nearest to the NACK receiving moment so as to configure aperiodic channel state information A-CSI;

if the error rate is less 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 trigger rule; the preset trigger rule includes any one of a trigger criterion determined based on the statistical reception number of negative acknowledgements NACK and a trigger criterion determined based on the number of times of negative acknowledgements NACK triggering.

In one embodiment, the step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgements, NACKs, using a triggering criterion determined based on a statistical number of receptions of the negative acknowledgements, NACKs, comprises:

counting the number of the continuous receiving Negative Acknowledgements (NACKs) to obtain the counted receiving number;

if the counted receiving number reaches a first threshold value, downlink control information DCI is sent in the nearest 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 acknowledgements, NACKs, using a triggering criterion determined based on a number of negative acknowledgements, NACKs, triggering, comprising:

detecting a number of triggers for triggering aperiodic channel state information A-CSI based on a Negative Acknowledgement (NACK);

and if the triggering times reach a second threshold value, starting a punishment period, and stopping triggering the aperiodic channel state information A-CSI under the condition of receiving Negative Acknowledgement (NACK) in the punishment period until the punishment period is finished.

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

determining channel measurement resources and data channel scheduling information;

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

the A-CSI calculation time is the time from triggering of aperiodic channel state information A-CSI by downlink control information DCI to feedback of the aperiodic channel state information A-CSI by a physical uplink control channel PUCCH; the calculation time of the HARQ-ACK is the time from the time that the terminal receives the PDSCH data to the time that the hybrid automatic repeat request responds to 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 two adjacent scheduling time intervals;

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

if it is determined that no data channel is scheduled in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two-time scheduling time interval, configuring PUCCH resources for transmitting aperiodic channel state information A-CSI based on channel measurement resources;

and if determining that the data channel is scheduled in the A-CSI calculation time according to the A-CSI calculation time and the adjacent two scheduling time intervals, determining the configuration of the downlink control information DCI to the PUCCH resources based on the channel measurement resources 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 the DCI under the condition of receiving the data packet arrival indication transmitted by the intelligent service control module; 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 dispatcher which are connected; the intelligent service control module is used for connecting the server management module through an interface; the base station dispatcher is used for connecting the server management module through the user plane function module;

the base station scheduler is used for realizing the steps of the method.

A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.

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 scheduler to ensure the arrival time of the quick response data packet; when a data service arrives, the base station scheduler and the user plane function module process data in parallel, a data packet is processed by the user plane function module, and the base station scheduler triggers the A-CSI through DCI, so that the parallel processing can reduce the time delay caused by the processing of an upper protocol stack and ensure the effectiveness and timeliness of triggering the A-CSI; according to the method and the device, time delay caused by data request and upper layer processing of the base station is reduced, and the data packet can be triggered and the channel quality can be acquired in time when arriving.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a diagram illustrating an exemplary embodiment of an application environment of a transmission method of aperiodic csi;

FIG. 2 is a flow diagram illustrating a method for aperiodic CSI transmission in one embodiment;

FIG. 3 is a flow diagram illustrating combining DCI to trigger A-CSI with NACK to trigger A-CSI in an embodiment;

FIG. 4 is a flowchart illustrating a triggering criteria based on a statistical number of received NACKs in one embodiment;

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

fig. 6 is a flowchart illustrating a method for aperiodic csi transmission in another embodiment;

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

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

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

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

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth 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 present 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, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another.

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 is understood to mean "electrical connection", "communication connection", or the like, if there is a transfer of electrical signals or data between the connected objects.

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

The 3GPP R17 proposal proposes to support a-CSI triggered based on downlink Control information dci (downlink Control information) and a-CSI triggered based on nack (negative acknowledgement), but does not indicate a specific trigger Control scheme. Based on the DCI triggered A-CSI, under the URLLC scene, the service requirement is high reliability and low time delay, so that a timely and effective triggering scheme is very necessary. An A-CSI mechanism based on NACK triggering is effective to sporadic small data packet transmission of URLLC, 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 target of URLLC. However, the conventional trigger method has problems of inaccuracy and poor reliability.

Meanwhile, for a-CSI transmission on PUCCH, the a-CSI on PUCCH proposed in the R17 proposal may use the same resource as HARQ (Hybrid Automatic Repeat reQuest) -ack (acknowledgement), or both may use separate PUCCH resources (DCI indication separately). Several reporting mechanisms of a-CSI on PUCCH are mentioned in the prior art, such as: when the PUCCH A-CSI conflicts with the PUSCH A-CSI, the PUCCH A-CSI is discarded; discarding the PUCCH A-CSI when the PUCCH A-CSI collides with a PPUCCH used for transmitting HARQ-ACK or SR (Scheduling Request); when the PUCCH A-CSI collides with PUCCH P-CSI (Periodic CSI), the PUCCH P-CSI (A-CSI priority is higher than P-CSI priority) is discarded, and unreliable transmission of the PUCCH A-CSI can be caused under the condition that the several PUCCH A-CSI reporting mechanisms are very likely to happen. It is also mentioned that triggering a-CSI by transmitting multiple DCIs avoids some DCI-triggered a-CSI missed detections, but this causes the DCI overhead to increase.

In the application, the base station scheduler and the intelligent service control module process data in parallel, 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 triggers the A-CSI by DCI; the time delay caused by the processing of an upper layer protocol stack at the base station side is reduced, and the triggering of the A-CSI can be started immediately once a data packet arrives, so that the channel quality is obtained in time; meanwhile, the base station scheduler triggers the A-CSI through the DCI and triggers the A-CSI through the NACK, an intelligent control mode of jointly triggering the A-CSI is provided, and the effectiveness of the A-CSI is enhanced.

In addition, the base station configures CSI-RS (Reference Signal) channel measurement resources and determines data channel scheduling information; and the base station determines whether the UE is an independent PUCCH resource or a common PUCCH resource by combining the CSI calculation time required by the UE and the HARQ-ACK calculation time through the 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.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

The aperiodic channel state information transmission method provided by the application can be applied to the 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 traffic 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, and specifically, an upper layer protocol stack and a 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 RAN-side data. In one example, the upper layer Protocol stack may include an SDAP (Service Data Adaptation Protocol), a PDCP (Packet Data Convergence Protocol), an RLC layer (Radio Link Control), and the like.

It should be noted that, a UE (User Equipment) referred to in this application is not limited to a 5G network, and includes: the system comprises a mobile phone, an Internet of things device, an intelligent household device, an industrial control device, a vehicle device 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 Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), and a User Agent (User Agent), which are not limited herein. The user device may be an automobile in Vehicle-To-Vehicle (V2V) communication, a machine in machine-type communication, or the like.

In addition, the base station referred to in the present application may be a Base Station (BS) device deployed in a radio access network to provide a UE with a wireless communication function, and includes various forms of macro base stations, micro base stations, relay stations, controllers, access points, and the like. In systems using different radio access technologies, names of devices having functions of base stations may be different, for example, in an LTE network, referred to as an evolved node B (eNB), in a third generation 3G network, referred to as a node B (node B), or a communication node applied in a fifth generation communication system, an NR base station, and the like, and other similar network devices may also be used.

The aperiodic channel state information transmission method provided by the application can be applied to an LTE system, an LTE-Advanced (LTE-A) system 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 (CA) and the like. Furthermore, it may also be applicable to use of a subsequent evolution system, such as a fifth generation 5G system, etc. Specifically, the method and the device are suitable for a 5G NR communication system, and are particularly suitable for URLLC application scenarios.

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

step 202, under the condition of receiving the indication of arrival of the data packet transmitted by the intelligent service control module, triggering the aperiodic channel state information a-CSI by the DCI.

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 triggers the A-CSI through DCI.

Furthermore, 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 scheduler; the base station scheduler triggers the A-CSI by the DCI without processing of an upper protocol stack SDAP, a PDCP layer, an RLC layer and the like; 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 data scheduling is performed based on the RAN side. The parallel processing can reduce the time delay brought by the processing of an upper layer protocol stack 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 arrival of the data to the base station scheduler, the base station scheduler triggers the A-CSI by DCI, time delay caused by processing of an upper layer protocol stack on the base station side is reduced, and the A-CSI can be immediately triggered once a data packet arrives, so that the channel quality is timely obtained.

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

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

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 arrival of the service through learning and then instructs the base station scheduler to perform scheduling triggering on the A-CSI, so that the time delay of a data service request from an application layer is reduced, namely the A-CSI feedback is triggered in time to ensure the effectiveness of the A-CSI.

The intelligent service control module directly indicates the base station scheduler to trigger A-CSI by DCI, so that the time delay caused by data request and upper layer processing of the base station is reduced, and the data packet can be triggered in time and the channel quality can be acquired when arriving.

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; receiving a response message of which the information comprises terminal feedback;

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

Specifically, the base station scheduler may trigger the A-CSI based on NACK by combining DCI with NACK, and trigger the A-CSI based on NACK in combination with the situation of receiving information, so as to enhance the effectiveness of the A-CSI.

The base station scheduler obtains an Error Rate of the received information, which may be an index for measuring accuracy of data transmission within a specified time, and in some examples, the Error Rate is 100% of Error in transmission/total number of transmitted codes; and the receiving information may include an acknowledgement message fed back by the terminal, and the acknowledgement message may be a positive acknowledgement ACK or a negative acknowledgement NACK. I.e. corresponding to an ACK or NACK fed back to the base station by the UE. And the base station scheduler judges the error rate condition of the received information and further determines whether to enable the A-CSI triggered based on the NACK. Based on the method and the device, the A-CSI can be triggered based on NACK by combining with the condition of receiving information, 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 and coding scheme, and if the trigger a-CSI based on NACK is of little significance at this time. In view of the above, the base station of the present application proposes a control strategy 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 a statistical number of receptions of negative acknowledgements, NACKs, and a trigger criterion determined based on a number of times of triggering of negative acknowledgements, NACKs.

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

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

specifically, fig. 4 shows the triggering criteria based on the statistical number of received NACKs. The base station side counts the number of continuously received NACKs, and sends the DCI at the nearest valid downlink timeslot after the number of continuously received NACKs reaches a first threshold (i.e., m in fig. 4). In an exemplary supplementary explanation, assuming that the first threshold is 5, and the base station side continuously receives 5 NACKs, then sends the DCI at the nearest valid downlink timeslot to configure the aperiodic channel state information a-CSI; and if the base station side receives 4 NACKs continuously and receives ACK at the 5 th time, the 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 with a triggering criterion determined based on the number of negative acknowledgement NACK triggers includes:

Specifically, the base station side detects the triggering times of triggering the aperiodic channel state information A-CSI based on Negative Acknowledgement (NACK), when the triggering times reach a second threshold value, the base station side enters a punishment time period, and in the punishment time period, even if the base station side detects NACK, the base station side does not perform triggering operation until the punishment time period is ended; in some examples, the setting of the penalty period may be performed in a manner that configures a penalty timer.

As shown in fig. 5, based on the trigger criteria of the penalty mechanism, a penalty timer may be configured first, during the period of bit error rate statistics, the base station side triggers a-CSI based on the detected NACK, and when the trigger number reaches a second threshold (i.e., the nth number in fig. 5, i.e., the trigger number 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). Illustratively, it is assumed that the penalty period is 50 ms, i.e. the penalty timer is set to 50 ms; in the error rate counting time period (which can be set to be 50 milliseconds or more than 50 milliseconds), the frequency of triggering the A-CSI by the base station side due to the detection of NACK is 5 times, namely the second threshold value is 6 times, the penalty timer is not started, if the frequency of triggering the A-CSI in the error rate counting time period detected by the base station side reaches 6 times, the penalty timer is started when the 6 th time is detected, in the penalty time period of 50 milliseconds, the penalty timer is started until the penalty timer is closed by taking the start of the penalty timer as a starting point, and in the 50 milliseconds, even if the base station detects NACK, the downlink control information DCI is not sent, and the A-CSI is not triggered.

In the scheme, wireless intelligent control is combined, data are processed in parallel through a base station scheduler and a user plane function module, the base station scheduler triggers the A-CSI through DCI, and reliability and effectiveness of triggering the A-CSI are guaranteed. In addition, the base station scheduler triggers the A-CSI by combining the DCI and the NACK, so that the channel quality can be timely and effectively acquired in URLLC application scenes no matter heavy load or light load is carried out, and the effectiveness and reliability of A-CSI transmission are improved.

In one embodiment, as shown in fig. 6, an aperiodic csi transmitting method is provided, which is described by taking the method as an example applied to the base station scheduler in fig. 1, and includes the following steps:

step S602, under the condition of receiving the data packet arrival indication transmitted by the intelligent service control module, triggering the aperiodic channel state information A-CSI by the DCI;

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 determined by machine learning of data arrival information 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 the downlink control information DCI to PUCCH resources according to the channel measurement resources and the data channel scheduling information, the A-CSI calculation time and the HARQ-ACK calculation time; the configuration of the downlink control information DCI on PUCCH resources comprises the configuration of PUCCH resources for transmitting aperiodic channel state information A-CSI or the configuration of PUCCH resources for transmitting the aperiodic channel state information A-CSI and hybrid automatic repeat request response HARQ-ACK;

Specifically, in the process of triggering aperiodic channel state information a-CSI by downlink control information DCI, the bit error rate of the received information may be compared with a target bit error rate, and whether aperiodic channel state information a-CSI triggered based on negative acknowledgement NACK is enabled or not may be determined according to a comparison result, so as to enhance the validity 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 PUCCH resources by combining the A-CSI calculation time and 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 PUCCH resource management, and resource waste of reserved PUCCH when no data is scheduled is avoided.

In the application, the base station scheduler may determine the configuration of the downlink control information DCI on the PUCCH resource in combination with the data service arrival prediction model. In some examples, when it is confirmed in conjunction with the data traffic arrival prediction model that there is no data scheduling, 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 data scheduling is confirmed in combination with a data traffic arrival prediction model, the configuration of the PUCCH resources by the DCI includes configuring the PUCCH resources for transmitting aperiodic channel state information a-CSI and hybrid automatic repeat request acknowledgement HARQ-ACK, that is, in combination with a data scheduling time and a base station trigger a-CSI time, determining that the DCI indicates the same resource as the a-CSI PUCCH or indicates separate 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 aperiodic channel state information a-CSI by downlink control information DCI to feeding back aperiodic channel state information a-CSI by physical uplink control channel PUCCH, that is, the a-CSI calculation time may refer to a time from triggering DCI to feeding back a-CSI. Further, T1 is adopted to indicate A-CSI calculation time, and when the base station side needs to trigger the A-CSI, the time interval from triggering the DCI to the A-CSI PUCCH is T1.

The HARQ-ACK calculation time may be a time from receiving PDSCH data of a Physical Downlink Shared Channel to replying to a hybrid automatic repeat request acknowledgement HARQ-ACK, that is, the HARQ-ACK calculation time is a time from receiving PDSCH (Physical Downlink Shared Channel) data to calculating a reply HARQ-ACK by the terminal. Further, the application adopts T3 to refer to HARQ-ACK calculation time, that is, the time interval from PDSCH scheduling information to HARQ-ACK PUCCH is T3.

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

Specifically, the base station configures a CSI-RS (Reference Signal) channel measurement resource and determines data channel scheduling information. When the difference between the data channel scheduling time of the base station and the A-CSI triggering time of the base station is fixed, the DCI is required to simultaneously configure the A-CSI and the HARQ-ACK; if there is no data channel scheduling in the fixed interval, the DCI configures only a-CSI.

Further, the base station scheduler combines a data service arrival prediction model, and when no data is scheduled, DCI only configures an A-CSI PUCCH; when data are scheduled, the DCI is determined to indicate the same resource of the A-CSI PUCCH and the HARQ PUCCH or indicate the independent resource of the A-CSI PUCCH and the HARQ PUCCH by combining the data scheduling time and the base station trigger A-CSI time.

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

To further illustrate aspects of the present application, a specific example is described below. The CSI-RS channel measurement resource is known to the base station side, and this application does not make any special limitation.

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

Further, the present application may determine whether there is data channel scheduling in the T1 time interval according to the sizes of T1 and Tsch; when the adjacent two scheduling time intervals Tsch is far larger than T1, determining that no data channel is scheduled 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, the base station does not schedule data to be transmitted, and the DCI configures only a-CSI PUCCH resources. Specifically, the scheduling information determined by the base station has no data channel scheduling information in the time interval T1, that is, Tsch is much larger than T1; t2 is not less than A-CSI calculation time (T2 ≧ T1), and only A-CSI PUCCH is configured by DCI.

As shown in fig. 8, the base station has scheduling data to transmit, and the DCI configures the same resource of the a-CSI PUCCH and the HARQ PUCCH; specifically, the base station determines that the scheduling information, the DCI indication and the CSI-RS resource have a scheduling result, the T2 is not less than the A-CSI calculation time (T2 is not less than T1), the T3 is not less than the PDSCH calculation time, and the DCI indication A-CSI PUCCH and HARQ PUCCH same resource 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 the DCI configures a-CSI PUCCH resources; specifically, the base station determines that the scheduling information, the DCI indication and the CSI-RS resource have a scheduling result, T2 is not less than A-CSI calculation time (T2 is not less than T1), T3 is less than PDSCH calculation time, and the DCI is only configured to indicate the A-CSI PUCCH, namely that the A-CSI PUCCH and the HARQ PUCCH respectively use independent resources. Equivalently, the base station side does not reserve the PUCCH resources of the UE, so that the resource waste caused by reserving the PUCCH resources when no scheduling result exists is avoided, and the PUCCH resource allocation of other UE is influenced;

in the above way, the base station configures CSI-RS channel measurement resources and determines data channel scheduling information; and the base station determines whether the UE is an independent PUCCH resource or a common PUCCH resource by measuring the resource through a channel state information reference signal (CSI-RS) channel 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, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 2, 3 and 6 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performing the sub-steps or stages is not necessarily sequential, but may be performed alternately or alternatingly with other steps or at least some of the sub-steps or stages of other steps.

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

In one embodiment, the triggering module may include:

the error rate obtaining module is used for obtaining the error rate of the received information; receiving a response message of which the information comprises terminal feedback;

the comparison module is used for comparing the error rate with the target 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 receiving number reaches a first threshold value, sending Downlink Control Information (DCI) at an effective downlink time slot nearest to the next Negative Acknowledgement (NACK) receiving moment so as to configure aperiodic channel state information (A-CSI);

or the like, or, alternatively,

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

the information determining module is used for determining channel measurement resources and data channel scheduling information;

the resource configuration module is used for determining the configuration of the downlink control information DCI to the PUCCH resources according to the channel measurement resources and the data channel scheduling information as well as the A-CSI calculation time and the HARQ-ACK calculation time; the configuration of the downlink control information DCI on PUCCH resources comprises the configuration of PUCCH resources for transmitting aperiodic channel state information A-CSI or the configuration of PUCCH resources for transmitting the aperiodic channel state information A-CSI and hybrid automatic repeat request response 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 two adjacent scheduling time intervals; the scheduling mode is dynamic scheduling or semi-static scheduling;

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

For specific limitations of the aperiodic csi transmitting apparatus, reference may be made to the above limitations of the aperiodic csi transmitting method, which is not described herein again. The modules in the aperiodic csi transmitting device may be implemented wholly or partially by software, hardware, or a combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules. It should be noted that, in the embodiment of the present application, the division of the module is schematic, and is only one logic function division, and there may be another division manner in actual implementation.

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

the base station scheduler is used for realizing the steps of the transmission method of the aperiodic channel state information.

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

the intelligent business control module combines a machine learning and prediction model to determine a data business arrival prediction model; indicating the arrival of a data packet of a base station scheduler according to the data service arrival prediction model, and triggering A-CSI by the base station scheduler through DCI, so that the time delay caused by data request and processing of an upper protocol stack of the base station is reduced;

in addition, the base station scheduler can trigger A-CSI in combination with DCI and NACK, and triggers A-CSI based on NACK by combining the condition of receiving information, 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 based on NACK; if the receiving error rate is larger than the target error rate, triggering the A-CSI; otherwise, the base station scheduler enables the A-CSI triggered based on the NACK by combining the NACK statistics of the received information or based on a certain punishment mechanism, so that the A-CSI triggered based on the NACK is not enabled all the time.

Finally, the base station scheduler configures CSI-RS channel measurement resources and determines data channel scheduling information; and the base station side determines whether the UE is an independent PUCCH resource or a common PUCCH resource by measuring the resource through the CSI-RS channel 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 base station scheduler combines a data service arrival prediction model, and when no data is scheduled, DCI only configures an A-CSI PUCCH; when data are scheduled, the DCI is determined to indicate the same resource of the A-CSI PUCCH and the HARQ PUCCH or indicate the independent resource of the A-CSI PUCCH and the HARQ PUCCH by combining the data scheduling time and the base station trigger A-CSI time. It should be noted that when the difference between the data channel scheduling time of the base station and the a-CSI triggering time of the base station is a fixed time, the DCI is required to configure the a-CSI PUCCH and the HARQ-ACK PUCCH at the same time; if there is no data channel scheduling in the 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 triggers A-CSI through DCI; 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 triggers the A-CSI by combining the DCI and the NACK, so that the channel quality can be timely and effectively acquired in URLLC application scenes whether heavy load or light load is carried out, and the effectiveness and reliability of A-CSI transmission are improved.

Further, the base station determines whether the UE is an independent PUCCH resource or a common PUCCH resource by 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 PUCCH resource management, and resource waste of reserved PUCCH when no data is scheduled is avoided.

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

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include at least one of non-volatile and volatile memory. Non-volatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical storage, or the like. Volatile Memory can include Random Access Memory (RAM) or external cache Memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others.

In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean 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, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An aperiodic channel state information transmission method, comprising:

the data packet arrival indication is obtained by processing data arrival information of the server management module by the intelligent service control module; and 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 aperiodic channel state information transmission method as recited in 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 determined by the intelligent service control module through machine learning for the data arrival information.

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

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

and comparing the error rate with a target error rate, and determining whether to enable the aperiodic channel state information A-CSI triggered based on the Negative Acknowledgement (NACK) according to a comparison result.

4. The aperiodic channel state information transmission method according to claim 3, wherein the step of determining whether aperiodic channel state information A-CSI triggered based on Negative Acknowledgement (NACK) is enabled or not according to the comparison result comprises:

if the error rate is greater than the target error rate, the DCI is sent in each effective downlink time slot nearest to the NACK receiving time so as to configure the aperiodic channel state information A-CSI;

if the error rate is less 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 trigger rule; the preset trigger rule comprises any one of a trigger criterion determined based on the statistic receiving number of Negative Acknowledgement (NACK) and a trigger criterion determined based on the triggering number of Negative Acknowledgement (NACK).

5. The aperiodic channel state information transmission method as recited in claim 4,

a step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgement, NACK, using the triggering criteria determined based on the statistical number of receptions of negative acknowledgements, NACK, comprising:

counting the number of the continuously received Negative Acknowledgements (NACKs) to obtain the counted receiving number;

if the counted receiving number reaches a first threshold value, the downlink control information DCI is sent in the nearest effective downlink time slot so as to configure the aperiodic channel state information A-CSI;

the step of enabling aperiodic channel state information a-CSI triggered based on negative acknowledgement, NACK, using the triggering criteria determined based on the number of negative acknowledgement, NACK, triggers comprises:

6. The aperiodic csi transmitting method as recited in 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 and the data channel scheduling information as well as the A-CSI calculation time and the HARQ-ACK calculation time; the configuration of the downlink control information DCI on PUCCH resources comprises configuring the PUCCH resources for transmitting the aperiodic channel state information A-CSI, or configuring the PUCCH resources 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 triggering aperiodic channel state information A-CSI by downlink control information DCI to feeding back the aperiodic channel state information A-CSI by a physical uplink control channel PUCCH; and the calculation time of the HARQ-ACK is the time from the receiving of the PDSCH data of the physical downlink shared channel to the replying of the hybrid automatic repeat request response HARQ-ACK by the terminal.

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

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

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

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

8. An aperiodic channel state information transmission apparatus, comprising:

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

9. A base station is characterized by comprising an intelligent service control module and a base station dispatcher which are connected; the intelligent service control module is used for connecting 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 is configured 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, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.