CN110635828B - Method and device for processing channel quality information - Google Patents

Abstract

The present application discloses a channel quality information processing method and device, including: determining a beam set for periodically sending channel quality reference information on a prefabricated beam according to a configured transmission parameter; determining an activated prefabricated beam of a terminal; from the determined beam set Select the beam consistent with the activated prefabricated beam as the beam for reporting channel quality information. The embodiments of the present application ensure the demodulation performance of the terminal, thereby improving the network capacity.

Description

Method and device for processing channel quality information

technical field

The present application relates to, but is not limited to, wireless communication technologies, and in particular, to a method and apparatus for processing channel quality information.

Background technique

With the continuous development of the fourth generation (4G) mobile communication system, Massive MIMO (Massive MIMO) technology will become an important technology for improving network capacity.

In the frequency division duplex (FDD, Frequency Divided Duplex) system, the departure angle (DOA, Departure Of Angle) of the uplink and downlink channels is reciprocal. In Massive MIMO technology, the base station divides the cell into multiple prefabricated beam coverages according to the DOA range, and selects and activates the prefabricated beams for the terminal from the divided prefabricated beams according to a certain strategy. In this way, the base station can activate the prefabricated beams to the terminal. send data. Terminals that activate prefabricated beams without intersection can space-division multiplex the same time-frequency resources to improve network capacity.

Under the FDD standard, in the Massive MIMO technical strategy, since there are multiple prefabricated beams in the cell, and the terminal has only one activated prefabricated beam at a specific time, so, for users such as Transmission Mode 9 (TM9, Transmission Mode 9) , will cause the base station to send data to the terminal beam (that is, the activated prefabricated beam) and the beam that transmits the cell reference signal (such as multiple prefabricated beams in the cell) may be different, which will directly lead to the downlink channel quality estimated by the terminal such as channel state information ( CSI, Channel State Information) does not match the channel on which the actual data is sent, thus affecting the demodulation performance of the terminal.

SUMMARY OF THE INVENTION

The present application provides a method and device for processing channel quality information, which can ensure the demodulation performance of a terminal, thereby improving network capacity.

The present application provides a channel quality information processing method, including:

Determine the beam set in which the channel quality reference information is periodically transmitted on the prefabricated beam according to the configured transmission parameters;

determine the activated prefabricated beam of the terminal;

From the determined beam set, a beam consistent with the activated prefabricated beam is selected as the beam for reporting the channel quality information.

The present application further provides a device for implementing channel quality information processing, including a processor and a memory; wherein, the memory stores a computer program that can run on the processor: used to execute any of the above-mentioned methods for realizing channel quality The steps of a method for processing information.

The present application also provides an apparatus for implementing channel quality information processing, including: a first determination module, a second determination module, and a processing module; wherein,

a first determining module, configured to determine, according to the configured transmission parameters, a beam set to which the channel quality reference information is periodically sent on the prefabricated beam;

a second determining module, configured to determine the activated prefabricated beam of the terminal;

The processing module is configured to select a beam consistent with the activated prefabricated beam from the determined beam set as a beam for reporting channel quality information.

The present application further provides a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are used to execute any of the methods for implementing channel quality information processing described above.

The technical solution of the present application includes at least: determining, according to the configured transmission parameters, a beam set to which the channel quality reference information is periodically sent on the prefabricated beam; determining the activated prefabricated beam of the terminal; selecting a beam consistent with the activated prefabricated beam from the determined beam set as the Beam for reporting channel quality information. The embodiments of the present application ensure the demodulation performance of the terminal, thereby improving the network capacity.

Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the description, claims and drawings.

Description of drawings

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

Fig. 1 is the flow chart of the channel quality information processing method of the present application;

FIG. 2 is a schematic diagram of the composition and structure of an apparatus for processing channel quality information of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, the embodiments in the present application and the features in the embodiments may be arbitrarily combined with each other if there is no conflict.

TM9 is a propagation mode defined in 3GPP Rel-10. Compared with the past, TM9 adds a new Channel State Information-Reference Signal (CSI-RS, Channel State Information-Reference Signal), which is responsible for user-level channel measurement/ feedback. Different users can have different CSI-RS configurations. Combined with the demodulation reference signal (DMRS, Demodulation Reference Signal) of the user-level pilot, a beam for the user can be formed together to achieve the effect of the wave following the movement of the human. At the same time, the beam of the base station can be changed from a fatter cell-level beam to multiple narrower user-level beams, and incoherent beams can be paired to achieve multi-user MIMO (MU-MIMO), thereby reusing spectrum resources, Increase network capacity.

However, if the beam that the base station sends data to the terminal (that is, the activated prefabricated beam) may be different from the beam that transmits the cell reference signal (such as multiple prefabricated beams in the cell), it will cause the downlink channel quality estimated by the terminal, such as CSI, to be different from the actual data transmission. The channels do not match, thus affecting the demodulation performance of the terminal. The solution for obtaining channel quality information provided by the present application can make the reference signals measured by terminals such as TM9 terminals, such as CSI-RS, be consistent with the activated prefabricated beams of the terminal itself, so that accurate channel quality can be obtained and the demodulation performance of the terminal can be guaranteed. , thereby increasing the network capacity.

Fig. 1 is the flow chart of the channel quality information processing method of the application, as shown in Fig. 1, including:

Step 100: Determine a beam set in which the channel quality reference information is periodically transmitted on the prefabricated beam according to the configured transmission parameters.

This step also includes:

The cell is divided into multiple prefabricated beam coverages according to the DOA range, and each prefabricated beam corresponds to one DOA range. The overlap between prefabricated beams is required to be small enough. The width of the DOA range covered by the prefabricated beam is related to the number of antennas of the base station. The more antennas of the base station, the narrower the DOA range width covered by the prefabricated beam.

Optionally, the sending parameters include but are not limited to: a signal sending cycle and an offset within the cycle.

Optionally, this step includes:

Calculate the radio frame number (FrameNo _CSI-RS ) and subframe number (SubFrameNo _CSI-RS ) for transmitting the channel quality reference information according to the configured signal transmission period and the offset within the period;

According to the prefabricated beam of the cell and the calculated radio frame number and subframe number for transmitting the channel quality reference information, the prefabricated beam corresponding to each channel quality reference information transmission period in the beam set is determined. In this way, the channel quality reference information can be sent in a rolling manner according to the prefabricated beam period in the beam set.

Optionally, determining a prefabricated beam corresponding to each channel quality reference information transmission cycle in the beam set includes: determining a prefabricated beam BF _j corresponding to the transmission channel quality reference information according to a preset periodic transmission strategy, so that the channel quality reference information is in the prefabricated beam. Periodically sent on the beam.

The periodic sending policy is described below with an example.

For example, if the channel quality reference information corresponds to the number of prefabricated beams in ascending order, the prefabricated beam BF _j corresponding to the transmitted channel quality reference information is:

When SubFrameNo _CSI-RS is less than 5, BF _j =(FrameNo _CSI-RS <<1) mod BF _NUM ;

When SubFrameNo _CSI-RS is greater than or equal to 5, BF _j =((FrameNo _CSI-RS <<1)+1)mod BF _NUM ; where mod represents a modulo operation, and << represents a left shift.

For another example, the channel quality reference information corresponds to the number of prefabricated beams in ascending order, then the prefabricated beam BF _j corresponding to the transmitted channel quality reference information is:

BF _j =(FrameNo _CSI-RS /(I _CSI-RS /10))mod BF _NUM ; where Mod represents a modulo operation.

Another example: the channel quality reference information is corresponding to the prefabricated beams, and the corresponding relationship is to first correspond to all the prefabricated beams with even numbers (in the order from small to large), and then correspond to all the prefabricated beams with odd numbers (in the order from small to large). In this way, the prefabricated beam BF _j corresponding to the transmitted channel quality reference information is:

When SubFrameNo _CSI-RS is less than 5, BF _j =((FrameNo _CSI-RS <<1) mod BF _NUM )*2;

When SubFrameNo _CSI-RS is greater than or equal to 5, BF _j =(((FrameNo _CSI-RS <<1)+1)mod BF _NUM )*2+1; where mod represents modulo operation, and << represents left shift .

The above examples are not used to limit the implementation of the periodic transmission strategy, as long as the prefabricated beam _BFj corresponding to the transmission channel quality reference information is determined according to the preset periodic transmission strategy, so that the channel quality reference information is periodically transmitted on the prefabricated beam.

Optionally, in the FDD Massive MIMO scenario, the channel quality reference information is a CSI-RS signal.

Taking the channel quality reference information as the CSI-RS as an example, this step specifically includes: calculating the subframe for sending the CSI-RS according to the configured CSI-RS signal transmission period I _CSI-RS and the offset Δ _CSI-RS in the period number; according to the prefabricated beam of the cell and the calculated subframe number for transmitting CSI-RS, determine the prefabricated beam corresponding to each CIS-RS transmission period, and these prefabricated beams form a beam set. In this way, the purpose of traversing and sending the cell CSI-RS signals according to the prefabricated beams in the wave speed set can be achieved. That is, the base station traverses and transmits the CSI-RS signal of the cell on the prefabricated beams in the determined beam set, that is, periodically sends the CSI-RS signal corresponding to the prefabricated beam every CSI-RS transmission period.

Step 101: Determine the activated prefabricated beam of the terminal.

Optionally, the terminal may include, but is not limited to, a TM9 terminal.

Optionally, determining the activated prefabricated beam of the terminal in this step includes:

The uplink channel is estimated through the uplink sounding signal of the terminal such as the TM9 terminal, and the activated prefabricated beam of the terminal is selected from the prefabricated beams according to the set activation policy.

Optionally, due to the reciprocity of the DOA of the uplink and downlink channels, the set activation strategy may include, but is not limited to: separately calculating the projected energy of the uplink channel on each prefabricated beam, and using the prefabricated beam corresponding to the maximum projected energy as the terminal's projection energy. Activate prefabricated beams.

Optionally, when there are multiple prefabricated beams corresponding to the maximum projected energy, one of the beams, such as a beam with a smaller beam number, may be selected as the activated prefabricated beam of the terminal.

It should be noted that, there is no strict sequence of execution between step 100 and step 101 in this application.

Step 102: Select a beam consistent with the activated prefabricated beam from the determined beam set as a beam for reporting channel quality information.

According to the activated prefabricated beam of the terminal, find the same beam as the activated prefabricated beam that transmits the cell channel reference quality information from the obtained beam set, and use the found beam as the beam that triggers the terminal to report the channel quality information, that is, the terminal is triggered according to the prefabricated beam. Aperiodic channel quality information reporting. At this time, the aperiodic channel quality information reported by the terminal is calculated according to the channel quality reference information signal measurement of the same prefabricated beam corresponding to the currently activated prefabricated beam. Therefore, the base station obtains accurate channel quality information for subsequent scheduling. , realize beam domain space division multiplexing of terminals, thereby improving network capacity.

Optionally, if the reporting of the aperiodic channel quality information of the terminal cannot be triggered due to insufficient downlink physical control channel (PDCCH, Physical Downlink ControlChannel) resources or other reasons, the triggering opportunity is discarded and the execution is not performed at this time. In the reporting step, the channel quality reference information corresponding to the found prefabricated beam is reported again after the next trigger.

Taking the channel quality information as CSI-RS as an example, if the calculated CSI-RS delivery subframe cannot deliver the DCI0 format that triggers aperiodic CSI due to insufficient PDCCH resources or other reasons, the triggering opportunity will be discarded. The purpose of waiting for the next CSI-RS signal corresponding to the prefabricated beam is to ensure that the aperiodic CSI of the terminal must be obtained by measuring the CSI-RS channel corresponding to the prefabricated beam of the terminal. Since the periodic CSI information reported by the terminal is not necessarily the result of measurement of the prefabricated beam CSI-RS signal corresponding to the terminal, the CSI information reported aperiodically in the present application will be used in the scheduling process.

In the embodiment of the present application, the channel quality reference information of the cell, such as CSI-RS signals, is traversed and sent according to the prefabricated beams, and the prefabricated beams of the cell channel quality reference information, such as CSI-RS signals, are matched, and the terminal corresponding to the prefabricated beams is triggered. Channel quality information such as CSI reporting. By triggering the reporting of channel quality information on the selected beam, it is ensured that the channel quality reference signal measured by the terminal such as the TM9 terminal, such as the prefabricated beam where the CSI-RS is located, is consistent with the activated prefabricated beam of the terminal itself. In this way, it is inevitable to obtain Accurate channel quality is ensured, thereby ensuring the demodulation performance of the terminal, thereby improving the network capacity.

Embodiments of the present invention further provide a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are used to execute any of the methods for implementing channel quality information processing described above.

An embodiment of the present invention also provides a device for implementing channel quality information processing, including a processor and a memory; wherein, the memory stores a computer program that can run on the processor: for executing any of the above to implement channel quality information processing steps of the method.

FIG. 2 is a schematic diagram of the composition and structure of the channel quality information processing device of the present application. As shown in FIG. 2 , it at least includes: a first determination module, a second determination module, and a processing module; wherein,

a first determining module, configured to determine, according to the configured transmission parameters, a beam set to which the channel quality reference information is periodically sent on the prefabricated beam;

a second determining module, configured to determine the activated prefabricated beam of the terminal;

The processing module is configured to select a beam consistent with the activated prefabricated beam from the determined beam set as a beam for reporting channel quality information.

Optionally, the apparatus of the present application further includes: a preprocessing module, configured to evenly divide the cell into multiple prefabricated beam coverages according to the DOA range, and each prefabricated beam corresponds to one DOA range.

Optionally, the sending parameters include but are not limited to: a signal sending cycle and an offset within the cycle.

Optionally, the first determining module is specifically set as:

Calculate the subframe number for transmitting the channel quality reference information according to the configured signal transmission period and the offset within the period; according to the prefabricated beam of the cell and the calculated subframe number for transmitting the channel quality reference information, determine each The channel quality wipes the prefabricated beams corresponding to the information transmission period.

Optionally, in the FDD Massive MIMO scenario, the channel quality reference information is a CSI-RS signal.

Optionally, the second determining module is specifically set as:

The uplink channel is estimated by the uplink sounding signal of the terminal, and the activated prefabricated beam of the terminal is selected from the prefabricated beams according to the set policy.

Optionally, since the DOA of the uplink and downlink channels is reciprocal, the set strategy may include, but is not limited to: respectively calculating the projected energy of the uplink channel on each prefabricated beam, and using the prefabricated beam corresponding to the maximum projected energy as the activation of the terminal. Prefabricated beams.

Optionally, the terminal may include, but is not limited to, a TM9 terminal.

Optionally, the processing module is specifically set as:

According to the activated prefabricated beam of the terminal, search for the same beam as the activated prefabricated beam that transmits the cell channel quality information from the obtained beam set, and use the found beam as the beam for reporting the channel quality information.

Optionally, if the reporting of the aperiodic channel quality information of the terminal cannot be triggered due to insufficient downlink physical control channel (PDCCH, Physical Downlink ControlChannel) resources or other reasons, then the processing module is further configured to: discard this trigger. The opportunity means not to perform the reporting step this time, and wait for the next trigger to report the channel quality information corresponding to the found prefabricated beam.

In the embodiment of the present application, the channel quality reference information of the cell, such as CSI-RS signals, is traversed and sent according to the prefabricated beams, and the prefabricated beams of the cell channel quality reference information, such as CSI-RS signals, are matched, and the terminal corresponding to the prefabricated beams is triggered. Channel quality information such as CSI reporting. By triggering the reporting of channel quality information on the selected beam, it is ensured that the channel quality reference signal measured by the terminal such as the TM9 terminal, such as the prefabricated beam where the CSI-RS is located, is consistent with the activated prefabricated beam of the terminal itself. In this way, it is inevitable to obtain Accurate channel quality is ensured, thereby ensuring the demodulation performance of the terminal, thereby improving the network capacity.

The following takes the FDD Massive MIMO scenario as an example to describe in detail the method for processing channel quality information implemented in the present application.

In the first embodiment, it is assumed that the cell is divided into 7 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-6.

On the one hand, the CSI-RS transmission subframe is calculated according to the configured transmission parameters of the CSI-RS, wherein the configuration parameters of the CSI-RS include: a transmission period I _CSI-RS and an offset Δ _CSI-RS within the period.

In the first embodiment, assuming that the value of I _CSI-RS is 5 and the value of Δ _CSI-RS is 1, it is calculated that the radio frame number (FrameNo _CSI-RS ) is 0, and the subframe number (SubFrameNo _CSI-RS ) is When the CSI-RS signal is sent at 1, the next time the CSI-RS signal is sent is when the radio frame number is 0, the subframe number is 6, and so on, and the CSI-RS signal is sent every 1 _CSI-RS period, such as 5 ms.

In the first embodiment, the number BF _NUM of prefabricated beams is 7 beams, numbered 0-6. In this embodiment, the CSI-RS signals are corresponding to the prefabricated beams in ascending order, and the corresponding CSI-RS signals are sent. The prefabricated beam BF _j is:

When SubFrameNo _CSI-RS is less than 5, BF _j =(FrameNo _CSI-RS <<1) mod BF _NUM ;

When SubFrameNo _CSI-RS is greater than or equal to 5, BF _j =((FrameNo _CSI-RS <<1)+1)mod BF _NUM ; where mod represents a modulo operation, and << represents a left shift.

According to the above calculation method, when the frame number is 0 and the subframe number is 1, the number of the corresponding prefabricated beam to be sent is 0; when the frame number is 0 and the subframe number is 6, the number of the corresponding prefabricated beam to be sent is 1. By analogy, the CSI-RS signals corresponding to the prefabricated beams of the cell are sent in turn all the time.

On the other hand, according to the projection energy P _i of the terminal on each prefabricated beam, the activated prefabricated beam i of the terminal is determined according to the following formula:

i=max(P ₀ , P ₁ , . . . , P _N ) (1)

Among them, i=0～6; N=6, max represents the operation of taking the maximum value; in the first embodiment, it is assumed that the energies of P ₀ , P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , and P ₆ are respectively 800, 12000, 600, 300, 200, 180, 100, then, according to formula (1), it is easy to determine that the number of the activated prefabricated beam of the terminal is 1.

According to the determined activation prefab beam i of the terminal, that is, the prefab beam numbered 1, match the prefab beam sent by CSI-RS in each CSI-RS signal transmission cycle, when the prefab beam sent by CSI-RS is 1, trigger the terminal aperiodic CSI reporting. In the first embodiment, when the frame number is 0 and the subframe number is 6, aperiodic CSI reporting of the terminal is triggered.

In this way, it is ensured that the periodic CSI information reported by the terminal corresponds to the measurement result of the prefabricated beam CSI-RS signal of the terminal. Therefore, the aperiodic CSI information reported by the terminal obtained according to the method of the present application can be used for subsequent scheduling. .

In the second embodiment, it is assumed that the cell is divided into 7 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-6.

On the one hand, the CSI-RS transmission subframe is calculated according to the configured transmission parameters of the CSI-RS, wherein the configuration parameters of the CSI-RS include: a transmission period I _CSI-RS and an offset Δ _CSI-RS within the period.

In the second embodiment, assuming that the value of I _CSI-RS is 10 and the value of Δ _CSI-RS is 2, it is calculated that: when the radio frame number is 0 and the subframe number is 2, the CSI-RS signal is sent, and the CSI is sent next time - When the RS signal is that the radio frame number is 1, the subframe number is 2, and so on, the CSI-RS signal is sent every 1 _CSI-RS period, such as 10 ms.

In the second embodiment, the number BF _NUM of prefabricated beams is 7 beams, numbered 0-6, and the CSI-RS signals are corresponding to the prefabricated beams in ascending order, then the prefabricated beam BF _j corresponding to the transmitted CSI-RS is :

BF _j =(FrameNo _CSI-RS /(I _CSI-RS /10))mod BF _NUM ; where Mod represents a modulo operation.

According to the above calculation method, when the frame number is 0 and the subframe number is 2, the number of the corresponding prefabricated beam to be sent is 0; when the frame number is 1 and the subframe number is 2, the number of the corresponding prefabricated beam to be sent is 1. By analogy, the CSI-RS signals corresponding to the prefabricated beams of the cell are sent in turn all the time.

On the other hand, according to the projection energy P _i of the terminal on each prefabricated beam, and according to formula (1), determine the activated prefabricated beam i of the terminal:

In the second embodiment, assuming that the energies of P ₀ , P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , and P ₆ are 12000, 12000, 600, 300, 200, 180, and 100, respectively, then, according to the formula ( 1) It is easy to determine that the number of the activated prefabricated beam of the terminal is 0. It should be noted that, in this embodiment, the energy of two beams is the maximum value, then, the beam with the smaller beam number can be taken as the activated prefabricated beam of the terminal, which is the prefabricated beam numbered 0 in the second embodiment . It should be noted that a larger number can also be selected here, as long as one of the beams is used as the activated prefabricated beam of the terminal, and there is no restriction on which one is selected.

According to the determined activated prefab beam i of the terminal, that is, the prefab beam numbered 0, match the prefab beam sent by CSI-RS in each CSI-RS signal transmission cycle, when the prefab beam sent by CSI-RS is 0, trigger the terminal aperiodic CSI reporting. In the second embodiment, when the frame number is 0 and the subframe number is 2, aperiodic CSI reporting of the terminal is triggered.

In this way, it is ensured that the periodic CSI information reported by the terminal corresponds to the measurement result of the prefabricated beam CSI-RS signal of the terminal. Therefore, the aperiodic CSI information reported by the terminal obtained according to the method of the present application can be used for subsequent scheduling. .

In the third embodiment, it is assumed that the cell is divided into 11 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-10.

On the one hand, the CSI-RS transmission subframe is calculated according to the configured transmission parameters of the CSI-RS, wherein the configuration parameters of the CSI-RS include: a transmission period I _CSI-RS and an offset Δ _CSI-RS within the period.

In the third embodiment, assuming that the value of I _CSI-RS is 5 and the value of Δ _CSI-RS is 1, it is calculated that: when the radio frame number is 0 and the subframe number is 1, the CSI-RS signal is sent, and the CSI is sent next time When the RS signal is that the radio frame number is 0, the subframe number is 6, and so on, the CSI-RS signal is sent every 1 _CSI-RS period, such as 5 ms.

In the third embodiment, the number BF _NUM of prefabricated beams is 11 beams, numbered 0-10. In this embodiment, the CSI-RS signals are corresponding to the prefabricated beams, and the corresponding relationship is to first correspond to all even numbers (from small to large). order) prefabricated beams, and then correspond to all odd-numbered (in ascending order) prefabricated beams. In this way, the prefabricated beam BF _j corresponding to the transmitted CSI-RS is:

When SubFrameNo _CSI-RS is less than 5, BF _j =((FrameNo _CSI-RS <<1) mod BF _NUM )*2;

When SubFrameNo _CSI-RS is greater than or equal to 5, BF _j =(((FrameNo _CSI-RS <<1)+1)mod BF _NUM )*2+1; where mod represents modulo operation, and << represents left shift .

According to the above calculation method, when the frame number is 0 and the subframe number is 1, the number of the corresponding prefabricated beam to be sent is 0; when the frame number is 0 and the subframe number is 6, the number of the corresponding prefabricated beam to be sent is 1. By analogy, the CSI-RS signals corresponding to the prefabricated beams of the cell are sent in turn all the time.

On the other hand, according to the projection energy P _i of the terminal on each prefabricated beam, and according to formula (1), determine the activated prefabricated beam i of the terminal:

In the second embodiment, it is assumed that the energies of P ₀ , P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , and P ₆ are 2000, 2000, 600, 300, 200, 10080, 100, 300, 200, and 1280, respectively. , 500, then, according to formula (1), it is easy to determine that the number of the activated prefabricated beam of the terminal is 5.

According to the determined activated prefab beam i of the terminal, that is, the prefab beam numbered 5, match the prefab beam sent by CSI-RS in each CSI-RS signal transmission cycle, when the prefab beam sent by CSI-RS is 5, trigger the terminal aperiodic CSI reporting. In the third embodiment, when the frame number is 4 and the subframe number is 1, aperiodic CSI reporting of the terminal is triggered.

In this way, it is ensured that the periodic CSI information reported by the terminal corresponds to the measurement result of the prefabricated beam CSI-RS signal of the terminal. Therefore, the aperiodic CSI information reported by the terminal obtained according to the method of the present application can be used for subsequent scheduling. .

In the fourth embodiment, it is assumed that the cell is divided into 11 prefabricated beam coverages according to the DOA range, and the numbers are respectively 0-10.

On the one hand, the CSI-RS transmission subframe is calculated according to the configured transmission parameters of the CSI-RS, wherein the configuration parameters of the CSI-RS include: a transmission period I _CSI-RS and an offset Δ _CSI-RS within the period.

In the fourth embodiment, assuming that the value of I _CSI-RS is 10, and the value of Δ _CSI-RS is 2, it is calculated that: when the radio frame number is 0, and the subframe number is 2, the CSI-RS signal is sent, and the next time the CSI-RS signal is sent For the CSI-RS signal, when the radio frame number is 1, the subframe number is 2, and so on, the CSI-RS signal is sent every 1 _CSI-RS period, such as 10 ms.

In the third embodiment, the number BF _NUM of prefabricated beams is 11 beams, numbered 0-10. In this embodiment, the CSI-RS signals are corresponding to the prefabricated beams in ascending order, and the corresponding CSI-RS signals are sent. The prefabricated beam BF _j is:

BF _j =(FrameNo _CSI-RS /(I _CSI-RS /10))mod BF _NUM ; where Mod represents a modulo operation.

According to the above calculation method, when the frame number is 0 and the subframe number is 2, the number of the corresponding prefabricated beam to be sent is 0; when the frame number is 1 and the subframe number is 2, the number of the corresponding prefabricated beam to be sent is 1. By analogy, the CSI-RS signals corresponding to the prefabricated beams of the cell are sent in turn all the time.

On the other hand, according to the projection energy P _i of the terminal on each prefabricated beam, and according to formula (1), determine the activated prefabricated beam i of the terminal:

In the fourth embodiment, it is assumed that the energies of P ₀ , P ₁ , P ₂ , P ₃ , P ₄ , P ₅ , and P ₆ are 2000, 2000, 600, 300, 200, 1080, 100, 300, 200, and 12800, respectively. , 500, then, according to formula (1), it is easy to determine that the number of the activated prefabricated beam of the terminal is 9.

According to the determined activated prefab beam i of the terminal, that is, the prefab beam numbered 9, match the prefab beam sent by CSI-RS in each CSI-RS signal transmission cycle, and when the prefab beam sent by CSI-RS is 9, trigger the terminal aperiodic CSI reporting. In the second embodiment, when the frame number is 9 and the subframe number is 2, aperiodic CSI reporting of the terminal is triggered.

However, in this embodiment, if the priority of the terminal is relatively low during scheduling, and no DCI-triggering resources are allocated when resources are allocated, and aperiodic CSI reporting cannot be triggered, then, according to the embodiment of the present application, at this time, no Trigger the aperiodic CSI reporting of the terminal, and after waiting for I _CSI-RS *BF _NUM subframes, when the number of the prefabricated beam sent by the CSI-RS is 9 again, trigger the aperiodic CSI reporting of the terminal again.

In this way, it is ensured that the periodic CSI information reported by the terminal corresponds to the measurement result of the prefabricated beam CSI-RS signal of the terminal. Therefore, the aperiodic CSI information reported by the terminal obtained according to the method of the present application can be used for subsequent scheduling. .

The above descriptions are only preferred examples of the present invention, and are not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. A method for processing channel quality information, comprising: Determine the beam set in which the channel quality reference information is periodically transmitted on the prefabricated beam according to the configured transmission parameters; determine the activated prefabricated beam of the terminal; According to the activated prefabricated beam of the terminal, search for the same beam as the activated prefabricated beam from the beam set, and when the prefabricated beam sending the channel quality reference information is the found beam, trigger the terminal to report the prefabricated beam Channel quality information corresponding to the channel quality reference information. 2. The channel quality information processing method according to claim 1, wherein the transmission parameters comprise: a signal transmission cycle and an offset within the cycle; The beam set for which the channel quality reference information is determined to be periodically sent on the prefabricated beam includes: Calculate the radio frame number and subframe number for transmitting the channel quality reference information according to the configured signal transmission period and the offset within the period; According to the prefabricated beam and the calculated radio frame number and subframe number for transmitting the channel quality reference information, a prefabricated beam corresponding to each channel quality reference information transmission period in the beam set is determined. 3. The method for processing channel quality information according to claim 2, wherein said determining a prefabricated beam corresponding to each channel quality reference information transmission period in the beam set comprises: The prefabricated beam corresponding to the transmission channel quality reference information is determined according to a preset periodic transmission policy _, so that the channel quality reference information is periodically transmitted on the prefabricated beam. 4. The channel quality information processing method according to claim 1, wherein the determining the activated prefabricated beam of the terminal comprises: The uplink channel is estimated by using the uplink sounding signal of the terminal, and an activated prefabricated beam of the terminal is selected from the prefabricated beams according to the set activation policy. 5. The channel quality information processing method according to claim 4, wherein the activation strategy comprises: respectively calculating the projection energy of the uplink channel on each prefabricated beam, and using the prefabricated beam corresponding to the maximum projection energy as the terminal to activate the prefabricated beam. 6. The channel quality information processing method according to claim 1, if the channel quality information cannot be reported, the method further comprises: The reporting step is not performed, and the channel quality information is reported after the next time a beam in the beam set that is the same as the activated prefabricated beam is found. 7. A device for realizing channel quality information processing, comprising a processor and a memory; wherein, a computer program that can run on the processor is stored on the memory: for executing the method described in any one of claims 1 to 6 Steps of implementing a method for channel quality information processing. 8. An apparatus for realizing channel quality information processing, comprising: a first determining module, a second determining module, and a processing module; wherein, a first determining module, configured to determine, according to the configured transmission parameters, a beam set to which the channel quality reference information is periodically sent on the prefabricated beam; a second determining module, configured to determine the activated prefabricated beam of the terminal; The processing module is configured to search for the same beam as the activated prefabricated beam from the beam set according to the activated prefabricated beam of the terminal, and when the prefabricated beam sending the channel quality reference information is the found beam, trigger The terminal reports the channel quality information corresponding to the channel quality reference information. 9 . A computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are used to execute the method for implementing channel quality information processing according to any one of claims 1 to 6 . 10 .

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