CN106559884B

CN106559884B - Method and device for transmitting aperiodic CSI

Info

Publication number: CN106559884B
Application number: CN201510624883.8A
Authority: CN
Inventors: 高雪娟; 郑方政
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2020-01-14
Anticipated expiration: 2035-09-25
Also published as: WO2017050031A1; CN106559884A

Abstract

The invention discloses a method and equipment for transmitting aperiodic CSI. The method comprises the following steps: a terminal acquires an aperiodic CSI request indication domain; if the aperiodic CSI request indication domain indicates that the terminal needs to perform aperiodic CSI reporting, the terminal determines an aperiodic CSI reporting set which needs to perform the aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe which receives the aperiodic CSI request indication domain or an aperiodic CSI reporting set corresponding to an uplink subframe which is scheduled by scheduling information carrying the aperiodic CSI request indication domain according to the indication state of the aperiodic CSI request indication domain; and sending the aperiodic CSI corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting, so that the A-CSI reporting of different aperiodic CSI reporting sets under the condition of more aggregation carriers is indicated through fewer aperiodic CSI trigger bits.

Description

Method and device for transmitting aperiodic CSI

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for transmitting aperiodic Channel State Information (CSI).

Background

In a Long Term Evolution-Advanced (LTE-a) Release (Rel) -10 Carrier Aggregation (CA) system, maximum 5 Carrier aggregations are supported. In order to realize reporting of Aperiodic Channel State Information (a-CSI) of different carriers, a maximum 2-bit a-CSI trigger bit is defined in Downlink Control Information (DCI) for triggering a-CSI of different carrier combinations according to table 1-1, wherein a first carrier set (set) and a second carrier set are two carrier sets configured in advance by a high-level signaling, and different combination conditions can cover triggering and reporting of a-CSI of maximum 5 carriers. When more than one CSI process exists on one carrier, the A-CSI of each CSI process is independently reported, so that the indication corresponding relation shown in the table 1-2 also exists.

Tables 1 to 1: CSI Request indication field (CSI Request field for PDCCH with uplink DCI format in UE specific search space) in Physical Downlink Control Channel (PDCCH) carrying uplink DCI format transmitted in User Equipment (UE) dedicated search space

TABLE 1-2 CSI Request indication field (CSI Request field for PDCCH/EPDCCH with uplink DCI format in UE specific search space) in PDCCH/Enhanced Physical Downlink Control Channel (EPDCCH) carrying uplink DCI format transmitted in UE specific search space

In the LTE-A Rel-13 CA system, up to 32 carrier aggregation is supported. With the increase of the number of the aggregated carriers, the number of the carriers needing to be reported by the A-CSI is increased. The 2-bit a-CSI trigger bits in the original DCI are not enough to support a-CSI triggering of a maximum of 32 carriers. The a-CSI trigger bit needs to be extended to support defining more carrier sets for a-CSI reporting. Currently, it has been defined to use 3 bits of a-CSI trigger bits in DCI to trigger different a-CSI reporting sets. Considering that the processing capability of the terminal is limited, not more than 5 CSI processes can be processed in one subframe at maximum, and one carrier corresponds to at least one CSI process. When one carrier is supposed to correspond to one CSI process, at most 5 carriers can be triggered to carry out A-CSI reporting by one-time A-CSI triggering, and if one carrier corresponds to more than one CSI process, the number of carriers which can be triggered by one-time A-CSI triggering is less. For 32 carriers, when it is assumed that one carrier corresponds to one CSI process, a-CSI reporting needs to be performed on at least 7 carrier sets respectively to cover a-CSI reporting of all carriers, at this time, a carrier set is equal to a CSI process set, and when it is assumed that one carrier corresponds to more than one CSI process, a-CSI reporting needs to be performed on more than 7 CSI process sets or carrier sets respectively to cover a-CSI reporting of all carriers. A 3-bit a-CSI trigger bit may indicate 2 in total³The ue shall report the a-CSI on the carrier, wherein at least one of the states is required to indicate that no a-CSI reporting is performed, and one of the states is also required to indicate that a-CSI reporting is performed on the carrier, and the remaining 6 states are not enough to indicate at least 7 different reporting sets. At present, how to makeAnd indicating that no clear method exists for reporting the A-CSI under the condition of 32 carrier aggregation by using a 3-bit A-CSI trigger bit.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for transmitting aperiodic CSI (channel state information), which can use a 3-bit A-CSI trigger bit to indicate the A-CSI reporting under the condition of 32 carrier aggregation.

The embodiment of the invention provides a method for sending aperiodic CSI, which comprises the following steps:

a terminal acquires an aperiodic CSI request indication domain;

if the aperiodic CSI request indication domain indicates that the terminal needs to perform aperiodic CSI reporting, the terminal determines an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe receiving the aperiodic CSI request indication domain or an aperiodic CSI reporting set corresponding to an uplink subframe scheduled by scheduling information carrying the scheduling information of the aperiodic CSI request indication domain according to the indication state of the aperiodic CSI request indication domain;

and the terminal sends the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to be subjected to aperiodic CSI reporting.

Optionally, the aperiodic CSI request indication field is carried in downlink control information DCI or a random access response grant.

Optionally, the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling; or

And the aperiodic CSI reporting set corresponding to the uplink subframe is an aperiodic CSI reporting set configured in advance by a high-level signaling.

Based on any of the above embodiments, the downlink subframe corresponds to at least one aperiodic CSI reporting set, and the aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different; or

The uplink subframe corresponds to at least one aperiodic CSI reporting set, and the aperiodic CSI reporting sets corresponding to different uplink subframes are partially the same or completely different.

Based on any of the above embodiments, the corresponding relationship between the indication state of the aperiodic CSI request indication field and the aperiodic CSI report set corresponding to the downlink subframe is pre-agreed or pre-configured by a high-level signaling; or

The indication state of the aperiodic CSI request indication domain and the corresponding relation of the aperiodic CSI reporting set corresponding to the uplink subframe are predetermined or are configured in advance by a high-level signaling.

Based on any of the above embodiments, the aperiodic CSI reporting set specifically includes: and the combination of one or more of a set formed by CSI processes and CSI subframe set pairs, a carrier set and a CSI process set.

The embodiment of the invention provides a method for receiving aperiodic Channel State Information (CSI), which comprises the following steps:

the base station determines an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting;

the base station generates an aperiodic CSI request indication domain corresponding to the aperiodic CSI reporting set which needs to be subjected to aperiodic CSI reporting;

the base station sends the aperiodic CSI request indication domain in a downlink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting or a downlink subframe used for scheduling an uplink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting;

and the base station receives the aperiodic CSI of the aperiodic CSI reporting set which needs to be subjected to aperiodic CSI reporting.

The embodiment of the invention provides a device for sending aperiodic Channel State Information (CSI), which comprises:

an obtaining module, configured to obtain an aperiodic CSI request indication field;

a determining module, configured to determine, if the aperiodic CSI request indication field indicates that the device to which the determining module belongs needs to perform aperiodic CSI reporting, an aperiodic CSI reporting set that needs to perform aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe that receives the aperiodic CSI request indication field or an aperiodic CSI reporting set corresponding to an uplink subframe that is scheduled by scheduling information that carries the aperiodic CSI request indication field according to an indication state of the aperiodic CSI request indication field;

and the sending module is used for sending the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to be subjected to the aperiodic CSI reporting.

The embodiment of the invention provides a receiving device of aperiodic Channel State Information (CSI), which comprises:

the determining module is used for determining an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting;

a generating module, configured to generate an aperiodic CSI request indication field corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting;

a sending module, configured to send the aperiodic CSI request indication field in a downlink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting or a downlink subframe used to schedule an uplink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting;

and the receiving module is used for receiving the aperiodic CSI of the aperiodic CSI reporting set which needs to carry out the aperiodic CSI reporting.

The embodiment of the invention provides a terminal, which comprises: a transceiver, and at least one processor connected with the transceiver, wherein:

the processor is used for reading the program in the memory and executing the following processes:

acquiring an aperiodic CSI request indication domain; if the aperiodic CSI request indication domain indicates that the equipment to which the determination module belongs needs to perform aperiodic CSI reporting, according to the indication state of the aperiodic CSI request indication domain, receiving, from the transceiver, an aperiodic CSI reporting set corresponding to a downlink subframe of the aperiodic CSI request indication domain or an aperiodic CSI reporting set corresponding to an uplink subframe scheduled by scheduling information carrying the aperiodic CSI request indication domain, and determining an aperiodic CSI reporting set needing to perform aperiodic CSI reporting; and controlling the transceiver to transmit the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to be subjected to aperiodic CSI reporting.

Based on any of the above embodiments, the corresponding relationship between the indication state of the aperiodic CSI request indication field and the aperiodic CSI report set corresponding to the downlink subframe is pre-agreed or pre-configured by a high-level signaling; or,

The base station provided by the embodiment of the invention comprises: a transceiver, and at least one processor connected with the transceiver, wherein:

determining an aperiodic CSI reporting set which needs to carry out aperiodic CSI reporting; generating an aperiodic CSI request indication domain corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting; controlling the transceiver to transmit the aperiodic CSI request indication domain in a downlink subframe corresponding to the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting or a downlink subframe used for scheduling an uplink subframe corresponding to the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting;

the transceiver is configured to receive the aperiodic CSI of the aperiodic CSI reporting set that needs to perform aperiodic CSI reporting.

In the method and the device provided by the embodiment of the invention, the A-CSI reporting of different aperiodic CSI reporting sets under the condition of more aggregated carriers is indicated by fewer aperiodic CSI trigger bits through configuring the aperiodic CSI reporting sets corresponding to different downlink subframes or the aperiodic CSI reporting sets corresponding to different uplink subframes.

Drawings

Fig. 1 is a flowchart illustrating a method for sending aperiodic CSI according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of a method for receiving aperiodic CSI according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an aperiodic CSI transmitting device according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an aperiodic CSI receiving apparatus according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a terminal according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a base station according to an embodiment of the present invention.

Detailed Description

According to the embodiment of the invention, the A-CSI reporting of different aperiodic CSI reporting sets under the condition of more aggregated carriers is indicated through less aperiodic CSI trigger bits by configuring the aperiodic CSI reporting sets corresponding to different downlink subframes or the aperiodic CSI reporting sets corresponding to different uplink subframes.

The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto. It is to be understood that the embodiments described herein are merely illustrative and explanatory of the invention and are not restrictive thereof.

As shown in fig. 1, a method for sending aperiodic CSI at a terminal side according to an embodiment of the present invention includes:

s11, the terminal acquires an aperiodic CSI request indication domain;

s12, if the aperiodic CSI request indication field indicates that the terminal needs to perform aperiodic CSI reporting, the terminal determines an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe which receives the aperiodic CSI request indication field or an aperiodic CSI reporting set corresponding to an uplink subframe which is scheduled by scheduling information carrying the aperiodic CSI request indication field according to the indication state of the aperiodic CSI request indication field;

and S13, the terminal sends the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to be reported.

In the embodiment of the invention, a terminal acquires an aperiodic CSI request indication domain; if the aperiodic CSI request indication domain indicates that the terminal needs to perform aperiodic CSI reporting, the terminal determines an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe receiving the aperiodic CSI request indication domain or an aperiodic CSI reporting set corresponding to an uplink subframe scheduled by scheduling information carrying the scheduling information of the aperiodic CSI request indication domain according to the indication state of the aperiodic CSI request indication domain; the terminal sends the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting, so that the A-CSI reporting of different aperiodic CSI reporting sets under the condition of more aggregation carriers is indicated through fewer aperiodic CSI trigger bits by configuring the aperiodic CSI reporting sets corresponding to different downlink subframes or the aperiodic CSI reporting sets corresponding to different uplink subframes.

Optionally, the aperiodic CSI reporting set specifically includes: and the combination of one or more of a set formed by CSI processes and CSI subframe set pairs, a carrier set and a CSI process set.

For example, a set formed by a CSI process and a CSI subframe set pair may be represented as a set of { CSI process, CSI subframe set } pairs, where the CSI subframe set is a subframe used for CSI measurement, and details are not repeated. For example, the elements contained in the set of { CSI process, CSI subframe set } pairs are: { CSI process 1, CSI subframe set 1} pair, { CSI process 2, CSI subframe set 2}, { CSI process 3, CSI subframe set 3}, and the like.

It should be noted that the carrier set may also be understood as a serving cell set, each serving cell includes at least one uplink carrier and/or at least one downlink carrier, uplink transmission in the serving cell is implemented by the at least one uplink carrier included in the serving cell, downlink transmission in the serving cell is implemented by the at least one downlink carrier included in the serving cell, and since the a-CSI is measured based on a relevant reference signal on the downlink carrier, the a-CSI corresponds to the a-CSI of the downlink carrier.

Optionally, the aperiodic CSI request indication field is carried in DCI or a random access response grant (grant).

In the embodiment of the present invention, when triggering aperiodic CSI reporting for a terminal aggregating multiple carriers, the following two optional implementation manners are included:

in the first mode, the triggered aperiodic CSI reporting set for performing aperiodic CSI reporting is related to a downlink subframe where DCI or random access response grant (grant) including an aperiodic CSI request indication field is transmitted, that is, aperiodic CSI reporting sets corresponding to different downlink subframes are configured, and a terminal can determine an aperiodic CSI reporting set for performing aperiodic CSI reporting according to a downlink subframe receiving the aperiodic CSI request indication field.

In this way, the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling.

In this way, the downlink subframe corresponds to at least one aperiodic CSI reporting set, and the aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different.

In this way, the indication state of the aperiodic CSI request indication field and the corresponding relationship of the aperiodic CSI report set corresponding to the downlink subframe are pre-agreed or pre-configured by a high-level signaling.

For example, for any downlink subframe, when the value of the aperiodic CSI request indication field is "000", the indication state is no aperiodic CSI report; when the value of the aperiodic CSI request indication domain is '001', the indication state is to trigger aperiodic CSI reporting of a scheduled carrier; when the value of the aperiodic CSI request indication field is "010", "011", "100", "101", "110", and "111", the indication state is that aperiodic CSI reports of different aperiodic CSI reporting sets configured in advance by triggering a higher layer signaling are reported, respectively.

It should be noted that, if there are multiple downlink subframes, the aperiodic CSI reporting sets corresponding to each downlink subframe may be completely different, for example, assuming that 12 aperiodic CSI reporting sets are defined, downlink subframe 1 corresponds to aperiodic CSI reporting triggering aperiodic CSI reporting sets 1 to 6, and downlink subframe 2 corresponds to aperiodic CSI reporting triggering aperiodic CSI reporting sets 7 to 12; or the aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same, for example, it is assumed that 8 aperiodic CSI reporting sets are defined, the downlink subframe 1 correspondingly triggers aperiodic CSI reporting of the aperiodic CSI reporting sets 1 to 6, and the downlink subframe 2 correspondingly triggers aperiodic CSI reporting of the aperiodic CSI reporting sets 1 to 4 and the aperiodic CSI reporting sets 7 to 8.

If N downlink subframes exist in a radio frame, the aperiodic CSI reporting sets independently defined by N1 downlink subframes can respectively indicate all the aperiodic CSI reporting sets, and the aperiodic CSI reporting sets corresponding to the remaining N-N1 downlink subframes can be the aperiodic CSI reporting sets corresponding to any one subframe of the N1 downlink subframes. For example, if there are 10 downlink subframes available in a radio frame, the corresponding relationship with the downlink subframe 1 may be defined for all downlink subframes 1, 3, 5, 7, and 9, that is, aperiodic CSI reporting of aperiodic CSI reporting sets 1 to 6 is correspondingly triggered, and the corresponding relationship with the downlink subframe 2 is defined for all downlink subframes 2, 4, 6, 8, and 10, that is, aperiodic CSI reporting of aperiodic CSI reporting sets 7 to 12 is correspondingly triggered, at this time, if a base station wants to trigger aperiodic CSI reporting of any one of the aperiodic CSI reporting sets 1 to 6, a corresponding aperiodic CSI request indication field may be generated, and DCI or a random access response grant carrying the aperiodic CSI request indication field may be sent in any one of the downlink subframes 1, 3, 5, 7, and 9. Correspondingly, the aperiodic CSI reporting set triggered by the aperiodic CSI request indication field detected by the terminal in any one of the downlink subframes 1, 3, 5, 7, and 9 is determined.

And secondly, the triggered aperiodic CSI reporting set for performing aperiodic CSI reporting is related to the uplink subframe scheduled by the DCI or the random access response grant containing the aperiodic CSI request indication domain, that is, aperiodic CSI reporting sets corresponding to different uplink subframes are configured, and the terminal can determine the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting according to the uplink subframe scheduled by the downlink subframe receiving the aperiodic CSI request indication domain.

In this way, the aperiodic CSI reporting set corresponding to the uplink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling.

In this way, the uplink subframe corresponds to at least one aperiodic CSI reporting set, and the aperiodic CSI reporting sets corresponding to different uplink subframes are partially the same or completely different.

In this way, the indication state of the aperiodic CSI request indication field and the corresponding relationship of the aperiodic CSI reporting set corresponding to the uplink subframe are predetermined or are configured in advance by a higher layer signaling.

For example, for any uplink subframe, when the value of the aperiodic CSI request indication field is "000", the indication state is that no aperiodic CSI is reported; when the value of the aperiodic CSI request indication domain is '001', the indication state is to trigger aperiodic CSI reporting of a scheduled carrier; when the value of the aperiodic CSI request indication field is "010", "011", "100", "101", "110", and "111", the indication state is that aperiodic CSI reports of different aperiodic CSI reporting sets configured in advance by triggering a higher layer signaling are reported, respectively.

In this way, optionally, the aperiodic CSI reporting set corresponding to the downlink subframe for scheduling the uplink subframe is preconfigured in the higher layer signaling. That is to say, the uplink subframe is configured with a corresponding aperiodic CSI reporting set, and the downlink subframe for scheduling the uplink subframe is also configured with a corresponding aperiodic CSI reporting set.

In this optional manner, the terminal needs to know which kind of correspondence relationship is used. The specific implementation comprises the following steps: and informing the terminal of the corresponding relation between the subframe adopted when the aperiodic CSI reporting set which needs to perform the aperiodic CSI reporting is determined and the aperiodic CSI reporting set through a high-level signaling, or appointing the corresponding relation between the subframe adopted when the terminal determines the aperiodic CSI reporting set which needs to perform the aperiodic CSI reporting and the aperiodic CSI reporting set in advance.

The corresponding relationship includes a corresponding relationship between a downlink subframe for scheduling the uplink subframe and an aperiodic CSI reporting set (i.e., an aperiodic CSI reporting set corresponding to the downlink subframe for scheduling the uplink subframe), and a corresponding relationship between the uplink subframe and the aperiodic CSI reporting set (i.e., an aperiodic CSI reporting set corresponding to the uplink subframe).

In this optional manner, the downlink subframe of the uplink subframe is scheduled to correspond to at least one aperiodic CSI reporting set, and the aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different.

In this optional manner, a corresponding relationship between the indication state of the aperiodic CSI request indication field and the aperiodic CSI reporting set corresponding to the downlink subframe for scheduling the uplink subframe is predetermined or is configured in advance by a high-level signaling.

Based on the same inventive concept, an embodiment of the present invention further provides a method for receiving aperiodic CSI at a base station side, as shown in fig. 2, where the method includes:

s21, the base station determines an aperiodic CSI reporting set which needs to perform aperiodic CSI reporting;

s22, the base station generates an aperiodic CSI request indication domain corresponding to the aperiodic CSI reporting set which needs to be reported by the aperiodic CSI;

s23, the base station sends the aperiodic CSI request indication domain in a downlink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting or a downlink subframe used for scheduling an uplink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting;

s24, the base station receives the aperiodic CSI of the aperiodic CSI reporting set which needs to be reported.

In the embodiment of the invention, a base station determines an aperiodic CSI reporting set which needs to carry out aperiodic CSI reporting; generating an aperiodic CSI request indication domain corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting; sending the aperiodic CSI request indication domain in a downlink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting or a downlink subframe used for scheduling an uplink subframe corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting; and receiving the aperiodic CSI of the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting, so that the A-CSI reporting of different aperiodic CSI reporting sets under the condition of more aggregation carriers is indicated through fewer aperiodic CSI trigger bits by configuring the aperiodic CSI reporting sets corresponding to different downlink subframes or the aperiodic CSI reporting sets corresponding to different uplink subframes.

Optionally, the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a high-level signaling, which is specifically described in the first mode; or

The aperiodic CSI reporting set corresponding to the uplink subframe is an aperiodic CSI reporting set preconfigured by a high-level signaling, which is specifically described in the above mode two.

It should be noted that the downlink subframe may be a downlink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting, or may be a downlink subframe used to schedule an uplink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting. For details, the description of the terminal side is not repeated here.

The following describes in detail the aperiodic CSI transmission method provided by the embodiments of the present invention by using an aperiodic CSI reporting set as a carrier set through two specific embodiments, and the aperiodic CSI reporting sets are similar to other forms, which are not illustrated herein.

Example 1: it is assumed that the higher layer signaling configures the aperiodic CSI (hereinafter referred to as a-CSI) reporting corresponding relationship shown in table 2 for the downlink subframe 1 in advance, and configures the a-CSI reporting corresponding relationship shown in table 3 for the downlink subframe 2. The carriers included in each of the carrier sets 1 to 12 may be completely different or partially the same. For example, the terminal aggregates 32 carriers in total with carriers 1 to 32, and may define every 3 carriers in the carriers 1 to 24 as a carrier set, for example, carriers 1 to 3 are defined as a carrier set 1, carriers 4 to 6 are defined as a carrier set 2, and so on, carriers 22 to 24 are defined as a carrier set 8, and every 2 carriers in the carriers 25 to 32 are defined as a carrier set, for example, carriers 25 and 26 are defined as a carrier set 9, carriers 27 and 28 are defined as a carrier set 10, and so on,

carriers

31 and 32 are defined as a carrier set 12; or partial overlapping can exist, for example, carriers 1-4 are defined as a carrier set, and carriers 3-5 are defined as a carrier set; certainly, the embodiment of the present invention does not exclude other defining manners as long as 32 carriers can be covered and distributed in 12 carrier sets;

a base station side: when it is determined that the carrier set 3 needs to be triggered to perform a-CSI reporting, determining that a specific bit of a 3-bit a-CSI request indication field corresponding to the carrier set 3 is "100", and sending DCI or a random access response grant carrying the a-CSI request indication field in a downlink subframe 1;

when it is determined that the carrier set 9 needs to be triggered to perform a-CSI reporting, it is determined that a specific bit of a 3-bit a-CSI request indication field corresponding to the carrier set 9 is "100", and a DCI or a random access response grant carrying the a-CSI request indication field is sent in the downlink subframe 2.

A terminal side: detecting downlink transmission in each downlink subframe, when receiving DCI or a random access response grant carrying an A-CSI request indication domain in a downlink subframe 1, analyzing to obtain a specific bit '100' of the A-CSI request indication domain, corresponding the '100' to a mapping table (namely a table 2) corresponding to the downlink subframe 1, and determining that the A-CSI report of a carrier set 3 is triggered by the A-CSI request indication domain; feeding back the a-CSI of the carrier set 3 in a Physical Uplink Shared Channel (PUSCH) of an uplink subframe scheduled by the downlink subframe;

when receiving DCI or a random access response carrying an A-CSI request indication domain in a downlink subframe 2, analyzing to obtain a specific bit '100' of the A-CSI request indication domain, corresponding the '100' to a mapping table (namely, table 3) corresponding to the downlink subframe 2, and determining that the A-CSI report of a carrier set 9 is triggered by the A-CSI request indication domain; and feeding back the A-CSI of the carrier set 9 in the PUSCH of the uplink subframe scheduled by the downlink subframe.

It should be noted that, if there are multiple downlink subframes, the carrier sets corresponding to each downlink subframe may be completely different, as shown in tables 2 and 3, or the carrier sets corresponding to different downlink subframes are partially the same, for example, for this embodiment, only 8 carrier sets are defined, and then the mapping relationship may be defined according to the manners of tables 2 and 4.

In addition, if there are N downlink subframes in a radio frame, the carrier sets are independently defined for N1 downlink subframes to achieve respective indication of all the carrier sets, and then the carrier sets corresponding to the remaining N-N1 downlink subframes may be the carrier sets corresponding to any one of the N1 downlink subframes. For example, if there are 10 downlink subframes available in a radio frame, the corresponding relationship with downlink subframe 1 may be defined for downlink subframes 1, 3, 5, 7, and 9, and the corresponding relationship with downlink subframe 2 may be defined for downlink subframes 2, at this time, for example, when a base station wants to trigger a-CSI of any one of carrier sets 1 to 6, a corresponding a-CSI request indication field may be generated, and a DCI or a random access response grant carrying the a-CSI request indication field may be sent in any one of downlink subframes 1, 3, 5, 7, and 9, and an a-CSI request indication field detected by a corresponding terminal in any one of downlink subframes 1, 3, 5, 7, and 9 corresponds to table 2 to determine the triggered carrier set.

Table 2: corresponding relation between A-CSI request indication domain and trigger content in subframe 1

Table 3: corresponding relation between A-CSI request indication domain and trigger content in subframe 2

Table 4: corresponding relation between A-CSI request indication domain and trigger content in subframe 2

Example 2: the high-level signaling configures the A-CSI reporting corresponding relation shown in the table 2 for the uplink subframe 1 in advance, and configures the A-CSI reporting corresponding relation shown in the table 3 for the uplink subframe 2; the specific division manner of the carrier sets 1-12 is similar to the embodiment.

A base station side: when it is determined that the carrier set 4 needs to be triggered to perform A-CSI reporting, determining that a specific bit of a 3-bit A-CSI request indication domain corresponding to the carrier set 4 is '101', and sending DCI or a random access response grant carrying the A-CSI request indication domain in a downlink subframe scheduling the uplink subframe 1;

when it is determined that the carrier set 11 needs to be triggered to report the a-CSI, it is determined that a specific bit of a 3-bit a-CSI request indication field corresponding to the carrier set 11 is "110", and a DCI or a random access response grant carrying the a-CSI request indication field is sent in a downlink subframe scheduling the uplink subframe 2.

A terminal side: detecting downlink transmission in each downlink subframe, analyzing to obtain a specific bit of an A-CSI request indication domain as '101' when receiving DCI (Downlink control information) or a random access response grant carrying the A-CSI request indication domain in a downlink subframe of a scheduling uplink subframe 1, corresponding the '101' to a mapping table (namely table 2) corresponding to the uplink subframe 1, and determining that the A-CSI report of a carrier set 4 is triggered by the A-CSI request indication domain; feeding back the A-CSI of the carrier set 4 in the PUSCH of the uplink subframe 1 in China;

when receiving DCI or a random access response grant carrying an A-CSI request indication domain in a downlink subframe of a scheduling uplink subframe 2, analyzing to obtain that a specific bit of the A-CSI request indication domain is '110', corresponding the '110' to a mapping table (namely, table 3) corresponding to the uplink subframe 2, and determining that the A-CSI report of a carrier set 11 is triggered by the A-CSI request indication domain; and feeding back the A-CSI of the carrier set 11 in the PUSCH of the uplink subframe 2.

It should be noted that, if there are multiple uplink subframes, the carrier sets corresponding to each uplink subframe may be completely different, for example, as shown in tables 2 and 3, or the carrier sets corresponding to different uplink subframes are partially the same, for example, for this embodiment, only 8 carrier sets are defined, and then the mapping relationship may be defined according to the manners of tables 2 and 4.

In addition, if there are N uplink subframes in a radio frame, the carrier sets are independently defined for N1 uplink subframes to realize respective indication of all the carrier sets, and then the carrier sets corresponding to the remaining N-N1 uplink subframes may correspond to the carrier sets corresponding to any one of the N1 uplink subframes. For example, if there are 10 uplink subframes available in a radio frame, a corresponding relationship with the uplink subframe 1 may be defined for all uplink subframes 1, 3, 5, 7, and 9, and a corresponding relationship with the uplink subframe 2 may be defined for all uplink subframes 2, 4, 6, 8, and 10, at this time, for example, when a base station wants to trigger an a-CS report I of any one of the carrier sets 1 to 6, a corresponding a-CSI request indication field may be generated, and a DCI or random access response grant carrying the a-CSI request indication field may be sent in any one of downlink subframes of the uplink subframes 1, 3, 5, 7, and 9; correspondingly, an a-CSI request indication field detected by the terminal in any one of the downlink subframes of the scheduling uplink subframes 1, 3, 5, 7, and 9 corresponds to the carrier set determined to be triggered in table 2.

In the above embodiment, the corresponding table of the a-CSI request indication fields and the indicated content defined in different subframes may only include one carrier set, that is, each subframe corresponds to only one trigger set, and may not include a state of triggering a-CSI report of the serving cell c (which may also be referred to as carrier c as explained above), that is, the serving cell c is directly configured in a certain set; in addition, the carriers and the carrier set in the above embodiments may also be replaced by CSI processes and CSI process sets, or replaced by CSI process sets and/or a set of { CSI process, CSI subframe set } pairs, where the CSI subframe set is a subframe used for CSI measurement, and details are not repeated.

The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

Based on the same inventive concept, the embodiment of the present invention further provides an aperiodic CSI transmitting device, and since the principle of the device for solving the problem is similar to the above aperiodic CSI transmitting method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 3, an aperiodic CSI transmitting device provided in an embodiment of the present invention includes:

an obtaining module 31, configured to obtain an aperiodic CSI request indication field;

a determining module 32, configured to determine, if the aperiodic CSI request indication field indicates that the device to which the determining module belongs needs to perform aperiodic CSI reporting, an aperiodic CSI reporting set that needs to perform aperiodic CSI reporting from an aperiodic CSI reporting set corresponding to a downlink subframe that receives the aperiodic CSI request indication field or an aperiodic CSI reporting set corresponding to an uplink subframe that is scheduled by scheduling information that carries the aperiodic CSI request indication field according to an indication state of the aperiodic CSI request indication field;

a sending module 33, configured to send the aperiodic CSI corresponding to the aperiodic CSI reporting set that needs to perform aperiodic CSI reporting.

Based on the same inventive concept, the embodiment of the present invention further provides an aperiodic CSI receiving device, and since the principle of the device for solving the problem is similar to the aperiodic CSI receiving method, the implementation of the device may refer to the implementation of the method, and repeated details are not repeated.

As shown in fig. 4, an aperiodic CSI receiving device provided in an embodiment of the present invention includes:

a determining module 41, configured to determine an aperiodic CSI reporting set that needs to perform aperiodic CSI reporting;

a generating module 42, configured to generate an aperiodic CSI request indication field corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting;

a sending module 43, configured to send the aperiodic CSI request indication field in a downlink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting or a downlink subframe used to schedule an uplink subframe corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting;

a receiving module 44, configured to receive the aperiodic CSI of the aperiodic CSI reporting set that needs to perform aperiodic CSI reporting.

The following describes a structure and a processing method of a transmitting device according to an embodiment of the present invention, taking a terminal as an example, with reference to a preferred hardware structure.

In the embodiment of fig. 5, the terminal comprises a transceiver 51, and at least one processor 52 connected to the transceiver 51, wherein:

the processor 52 is configured to read the program in the memory 53, and execute the following processes:

acquiring an aperiodic CSI request indication domain; if the aperiodic CSI request indication field indicates that the device to which the determination module belongs needs to perform aperiodic CSI reporting, according to the indication state of the aperiodic CSI request indication field, receiving, from the transceiver 51, an aperiodic CSI reporting set corresponding to a downlink subframe of the aperiodic CSI request indication field or an aperiodic CSI reporting set corresponding to an uplink subframe scheduled by scheduling information carrying the aperiodic CSI request indication field, and determining an aperiodic CSI reporting set that needs to perform aperiodic CSI reporting; and controlling the transceiver 51 to transmit the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to perform aperiodic CSI reporting.

Wherein in fig. 5 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors represented by processor 52 and various circuits of memory represented by memory 53, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 51 may be a number of elements including a transmitter and a receiver providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 54 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 52 is responsible for managing the bus architecture and general processing, and the memory 53 may store data used by the processor 52 in performing operations.

The following describes a structure and a processing method of a receiving device according to an embodiment of the present invention, taking a base station as an example, with reference to a preferred hardware structure.

In the embodiment of fig. 6, the base station comprises a transceiver 61, and at least one processor 62 connected to the transceiver 61, wherein:

the processor 62 is configured to read the program in the memory 63 and execute the following processes:

determining an aperiodic CSI reporting set which needs to carry out aperiodic CSI reporting; generating an aperiodic CSI request indication domain corresponding to the aperiodic CSI reporting set needing aperiodic CSI reporting; controlling the transceiver 61 to transmit the aperiodic CSI request indication field in a downlink subframe corresponding to the aperiodic CSI reporting set requiring aperiodic CSI reporting or a downlink subframe used for scheduling an uplink subframe corresponding to the aperiodic CSI reporting set requiring aperiodic CSI reporting;

the transceiver 61 is configured to receive the aperiodic CSI of the aperiodic CSI reporting set that needs to perform aperiodic CSI reporting.

Wherein in fig. 6 the bus architecture may comprise any number of interconnected buses and bridges, in particular one or more processors represented by processor 62 and various circuits of memory represented by memory 63, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 61 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 62 is responsible for managing the bus architecture and general processing, and the memory 63 may store data used by the processor 62 in performing operations.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method for transmitting aperiodic CSI, the method comprising:

a terminal acquires an aperiodic CSI request indication domain;

the terminal sends the aperiodic CSI corresponding to the aperiodic CSI reporting set which needs to be subjected to aperiodic CSI reporting;

the aperiodic CSI reporting set specifically includes: and the combination of one or more of a set formed by CSI processes and CSI subframe set pairs, a carrier set and a CSI process set.

2. The method of claim 1, wherein the aperiodic CSI request indication field is carried in Downlink Control Information (DCI) or a random access response grant.

3. The method of claim 1, wherein the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling; or

4. The method of claim 1, wherein the downlink subframe corresponds to at least one aperiodic CSI reporting set, and aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different; or

5. The method of claim 1, wherein a correspondence between an indication state of the aperiodic CSI request indication field and an aperiodic CSI reporting set corresponding to the downlink subframe is pre-agreed or pre-configured by a higher layer signaling; or

6. A method for receiving aperiodic CSI (channel state information), the method comprising:

the base station receives the aperiodic CSI of the aperiodic CSI reporting set which needs to be reported;

7. The method of claim 6, wherein the aperiodic CSI request indication field is carried in Downlink Control Information (DCI) or a random access response grant.

8. The method of claim 6, wherein the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling; or

9. The method of claim 6, wherein a downlink subframe corresponds to at least one aperiodic CSI reporting set, and aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different; or

10. The method of claim 6, wherein a correspondence between an indication state of the aperiodic CSI request indication field and an aperiodic CSI reporting set corresponding to the downlink subframe is pre-agreed or pre-configured by a higher layer signaling; or

11. An apparatus for transmitting aperiodic CSI, the apparatus comprising:

a sending module, configured to send aperiodic CSI corresponding to the aperiodic CSI reporting set that needs aperiodic CSI reporting;

12. The apparatus of claim 11, wherein the aperiodic CSI request indication field is carried in downlink control information, DCI, or a random access response grant.

13. The apparatus of claim 11, wherein the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling; or

14. The apparatus of claim 11, wherein the downlink subframe corresponds to at least one aperiodic CSI reporting set, and aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different; or

15. The apparatus of claim 11, wherein a correspondence between an indication state of the aperiodic CSI request indication field and an aperiodic CSI reporting set corresponding to the downlink subframe is pre-agreed or pre-configured by a higher layer signaling; or

16. An apparatus for receiving aperiodic CSI, the apparatus comprising:

a receiving module, configured to receive the aperiodic CSI of the aperiodic CSI reporting set that needs to perform aperiodic CSI reporting;

17. The apparatus of claim 16, wherein the aperiodic CSI request indication field is carried in downlink control information, DCI, or a random access response grant.

18. The apparatus of claim 16, wherein the aperiodic CSI reporting set corresponding to the downlink subframe is an aperiodic CSI reporting set preconfigured by a higher layer signaling; or

19. The apparatus of claim 16, wherein the downlink subframe corresponds to at least one aperiodic CSI reporting set, and aperiodic CSI reporting sets corresponding to different downlink subframes are partially the same or completely different; or

20. The apparatus of claim 16, wherein a correspondence between an indication state of the aperiodic CSI request indication field and an aperiodic CSI reporting set corresponding to the downlink subframe is pre-agreed or pre-configured by a higher layer signaling; or