CN102801498B - A kind of terminal equipment selects reporting of subband feedback and defining method and equipment - Google Patents

Abstract

The invention discloses a kind of terminal equipment and select reporting of subband feedback and defining method and equipment, the method comprises: base station equipment is the one or more channel condition information process of terminal equipment configuration, and be that described terminal equipment configuration subband is selected to indicate; Described subband selects instruction to send to described terminal equipment by described base station equipment; Described base station equipment receives the feedback information that described terminal equipment reports, and determines that the feedback information of subband feedback selected by described terminal equipment; Described terminal equipment receives the subband selection instruction that described base station equipment is described terminal equipment configuration; Described terminal equipment utilizes described subband to select instruction to carry out subband selection, and utilizes the subband uploading feedback information selected.In the embodiment of the present invention, by configuring the subband selective dependency relation of multiple channel condition information process, realizing multiple channel condition information process with unlike signal hypothesis and/or disturbance hypothesis and selecting to feed back based on identical subband.

Description

Method and equipment for reporting and determining feedback of selected sub-band of terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for reporting and determining feedback of a selected sub-band of a terminal device.

Background

In an LTE-a (long term evolution-advanced) system, in order to reduce the interference of neighboring cells of cell edge terminal devices and improve the experience of the cell edge terminal devices, a coordinated multipoint transmission technology may be adopted; the coordinated multi-point transmission technology is the coordination among a plurality of TPs (transmission points) separated in a geographical location, and the plurality of transmission points refer to base stations of different cells or a base station of a cell and a plurality of RRHs (remote radio heads) controlled by the base station.

The coordinated multipoint transmission technology can be divided into downlink coordinated multipoint transmission and uplink joint reception, and the downlink coordinated multipoint transmission includes CS/CB (coordinated scheduling/coordinated beamforming) and JP (joint processing). In the CS/CB transmission process, one transmission point in a plurality of transmission points sends a useful signal to the terminal equipment, and other transmission points reduce the interference to the terminal equipment as much as possible through joint scheduling and beam forming. The JP scheme can be further divided into JT (joint transmission) and DPS (dynamic point selection); in the JT transmission process, a plurality of transmission points simultaneously transmit useful signals to the terminal equipment, so that the receiving signals of the terminal equipment are enhanced; in the DPS transmission process, the transmission points of the terminal devices are dynamically switched, which always selects a transmission point optimal to the terminal device from the cooperative transmission points to transmit the signal of the terminal device. The above coordinated multipoint transmission schemes may be used in combination with each other, or may also be used in combination with a DB (dynamic muting) scheme, and some transmission points are dynamically set on some time-frequency resources to not transmit signals.

In order to support coordinated multipoint transmission, a network side configures one or more channel state information processes for a terminal device, and each channel state information process corresponds to a downlink reference signal resource (such as a Non-zero power channel state information reference signal (nzp csi-RS) resource and the like) in a CoMP (Co-coordinated multiple point transmission, multipoint joint transmission) measurement set and an interference hypothesis; and the terminal device measures the downlink channel of each transmission point through the downlink reference signal resource, and measures the interference of the interference hypothesis through a corresponding IMR (interference measurement resource) configured at the network side.

It should be noted that, in the above process, each transmission point corresponds to a downlink reference signal resource, which may include one or more physical transmission points, and after implementing downlink channel measurement and interference measurement, the terminal device further needs to calculate and report information according to CSI (channel state information) required by the transmission scheme; the CSI is reported in a periodic reporting mode based on a PUCCH (physical uplink control channel) or an aperiodic reporting mode based on a PUSCH (physical uplink shared channel).

Furthermore, the network side configures a channel state information reporting mode for each channel state information process, and different channel state information processes may configure different reporting modes, and the feedback information of the channel state information processes is reported in the respective reporting modes; in addition, different csi processes may also be configured with the same reporting mode, and the feedback information of the csi processes configured with the same reporting mode is reported in the same reporting mode. The periodic reporting based on the PUCCH comprises a reporting mode 1-0, a reporting mode 1-1, a reporting mode 2-0 and a reporting mode 2-1; reporting mode 1-0 contains wideband CQI (channel quality indicator); the reporting mode 1-1 includes a wideband CQI and a wideband PMI (precoding matrix indicator), and also includes a sub-mode 1 and a sub-mode 2, and is used for reporting channel state information of an antenna port of the base station 8 in the transmission mode 9; the reporting mode 2-0 comprises that the terminal equipment selects a sub-band CQI; the reporting mode 2-1 comprises terminal equipment selecting sub-band CQI and broadband PMI. The reporting modes include reporting types 1, 1a, 2a, 2b, 2c, 3, 4, 5, and 6, and are used for reporting information such as CQI, PMI/RI (rank indicator), PTI (precoding type indicator), and the like.

In periodic reporting modes 2-0 and 2-1 including a selected sub-band CSI of a terminal device, a CQI of a certain serving cell reported by the terminal device in a certain subframe represents a channel quality on a certain specified sub-band of a certain BP (BandwidthPlart); set the system bandwidth asThe number of PRBs (physical resource blocks) included in the downlink system bandwidth is represented, the size of the system subband is k, and the total number of subbands included in the system bandwidth is kIf it isThe highest frequency sub-band size isThe number of BPs is J, one BP comprises N with continuous frequencies_jThe number of sub-bands, if J =1,if J is>1, according tok and J, Nj isOrAs shown in table 1, is the system bandwidthCorresponding to the sub-band size k, the system bandwidth and the BP quantity J.

TABLE 1 relationship between subband size k and BP number J and system bandwidth

As can be seen from Table 1, the BP is numbered in ascending order of frequency, and the BP is not increased from low to high in size; in the periodic reporting modes 2-0 and 2-1, the terminal equipment selects N of BP_jReporting a sequence number of an L-bit sub-band by one of the sub-bands, and sequentially scanning each BP according to the ascending order of frequency; wherein, the serial numbers of the L-bit sub-bands are numbered according to the ascending order of frequency,

the specific method for reporting the terminal equipment selection sub-band CSI in the periodic reporting modes 2-0 and 2-1 comprises the following steps:

(1) in the periodic reporting mode 2-0, in a sub-band CQI reporting sub-frame selected by the terminal equipment: a. terminal equipment N from each BP in J BPs_jOf the subbands, one subband is selected for each corresponding BP. b. Terminal equipment reports a type 1 report which comprises a CQI value and the correspondingSelecting the sub-band sequence number by the L-bit; the CQI value reported by the terminal equipment corresponds to the transmission only carried out on a selected subband of a certain BP; and the terminal equipment reports the type 1 report of each BP in turn in each continuous reporting opportunity, namely RI reported by the terminal equipment>1, CQI reporting also only indicates the channel quality of the first codeword. c. For transmission mode 3, subband selection and CQI values are calculated based on the RI reported in the last cycle; for other transmission modes, subband selection and CQI values are calculated based on rank 1 transmissions.

(2) The periodic reporting mode 2-1 is that in the subframe for selecting the sub-band CQI for other transmission mode reporting terminal equipment except the transmission mode 9 configured with 8 CSI-RS ports: a. terminal equipment N from each BP in J BPs_jOf the subbands, one subband is selected for each corresponding BP. b. The terminal equipment reports the corresponding type 1 report for each BP in each continuous reporting time, wherein the type 1 report comprises a CQI value of a code word 0 and a corresponding L-bit selection sub-band sequence number, and the CQI value of the code word 0 corresponds to the transmission only carried out on a selection sub-band of a certain BP; when RI is>And when 1, additionally reporting a 3-bit sub-band space difference CQI value as the offset of the code word 1. c. For transmission modes 4, 8 and 9, subband selection and CQI values are calculated based on the wideband PMI and RI reported in the last cycle; for other transmission modes, the PMI is calculated based on the last reported PMI and transmission of rank 1.

(3) The periodic reporting mode 2-1 is in a subframe of a terminal equipment selection subband CQI/second PMI for a transmission mode 9 configured with 8 CSI-RS ports: a. terminal equipment N from each BP in J BPs_jOf the subbands, one subband is selected for each corresponding BP. b. The terminal equipment reports the corresponding type 1 report for each BP report in each continuous reporting time, wherein the type 1 report comprises a CQI value of a code word 0 and a corresponding L-bit selection sub-band sequence number; and the CQI value of codeword 0 corresponds to transmission only on a selected subband of a certain BP; when RI is>When 1, additionally reporting a 3-bit sub-band space difference CQI value as the offset of a code word 1; a second PMI of a precoding matrix; the second PMI is selected from the codebook subset and is assumed to be transmitted only on a selected subband of the corresponding BP. c. Terminal device selectionA subband second PMI which is calculated based on the RI of the last reporting period and the broadband first PMI; and the subband selection and the CQI value are calculated based on the selected precoding matrix and the RI reported in the last period.

It should be noted that, if the RI assumption based on the first PMI reported last time is different from the RI assumption based on the first PMI reported last time periodically, or there is no first PMI reported last time, the condition on which the second PMI is calculated is not limited. In addition, the PUSCH-based aperiodic channel information reporting comprises a reporting mode 1-2, a reporting mode 2-2, a reporting mode 3-0 and a reporting mode 3-1, and the specific method for the terminal equipment to select the sub-band CSI in the aperiodic reporting mode 2-0 and the aperiodic reporting mode 2-1 is as follows:

(1) aperiodic reporting mode 2-0: a. the terminal device selects M subbands with size k in the subband set S, and the correspondence between M and k and the system bandwidth is shown in table 2. b. The terminal device reports a CQI value corresponding to transmission only on the M selected subbands, which indicates only the channel quality of the first codeword, even if RI > 1. c. The terminal device reports a wideband CQI value, which assumes transmission on the subband set S, and even if RI >1, the wideband CQI only represents the channel quality of the first codeword. d. For transmission mode 3, the reported CQI value is calculated based on the reported RI. For other transmission modes, rank 1 calculation is based.

TABLE 2 relationship between subband size k and subband number M reported aperiodically and system downlink bandwidth

(2) Aperiodic reporting mode 2-2: a. the terminal device jointly selects M subbands with the size of k and a single precoding matrix used for transmission on the M selected subbands; the M subbands are selected from a set S of subbands and a single precoding matrix is selected from a codebook subset of the M selected subbands. b. The terminal equipment reports a CQI for each code word, the CQI is correspondingly transmitted in M selected sub-bands, and the same selected single precoding matrix is used on each sub-band in the M sub-bands. c. Except for configuring a transmission mode 9 of 8 CSI-RS ports, the terminal equipment reports a single precoding matrix selected for M selected subbands, and the terminal equipment reports a single precoding matrix selected for a subband set S. d. For a transmission mode 9 configured with 8 CSI-RS ports, the terminal equipment reports a first precoding matrix indication for the subband set S, and reports a second precoding matrix indication for the subband set S, and reports the second precoding matrix indication for the M selected subbands. e. A single precoding matrix is selected from the codebook subset, assuming transmission on the subband subset S. f. And the terminal equipment reports the broadband CQI value of each code word, and the CQI value is calculated based on the transmission assumption on the subband set S and the single precoding matrix on all the subbands. g. For transmission modes 4, 8 and 9, reporting PMI and CQI are calculated based on the reported RI; for other transmission modes, rank 1 calculation is based.

(3) For all terminal equipments to select subband feedback mode, the terminal equipment reports a combination number r for indicating the positions of M selected subbandsWherein the set（1≤s_i≤N,s_i＜s_i+1) Containing M ordered sub-band sequence numbers,in order to have the coefficients of the extended binomial, $r\∈\{0,\·\·\·,\left(\begin{array}{c}N\\ M\end{array}\right)-1\}.$

(4) the CQI for each codeword for the M selected subbands is differentially encoded relative to the wideband CQI.

In the existing coordinated multi-point transmission, according to conditions such as a transmission system of a network or a supported transmission scheme, terminal devices of multiple transmission points may need the same sub-band selection when selecting sub-band reporting. For example, in JT and CS/CB transmission, the network needs to calculate the CQI of CoMP according to the feedback information on a certain subband of each transmission point in the measurement set of the terminal device, and perform link adaptation; in order to realize that terminal devices of multiple transmission points feed back CSI information of the same subband in the terminal device selection subbands, a dependency relationship needs to be introduced between the terminal device selection subbands of multiple channel state information processes.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:

the existing method for selecting sub-bands by periodic and non-periodic terminal equipment is designed for a transmission scheme of a single transmission point, and no mechanism is adopted for ensuring that a plurality of transmission points select the same sub-band.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for reporting and determining feedback of a selected sub-band of a terminal device, which are used for performing feedback based on the same sub-band selection.

In order to achieve the above object, an embodiment of the present invention provides a method for determining feedback of a terminal device selecting a subband, including:

the base station equipment configures one or more channel state information processes for the terminal equipment and configures sub-band selection indication for the terminal equipment;

the base station equipment sends the sub-band selection indication to the terminal equipment;

and the base station equipment receives the feedback information reported by the terminal equipment and determines the feedback information fed back by the terminal equipment selecting sub-band.

The embodiment of the invention provides a reporting method for terminal equipment to select subband feedback, which comprises the following steps:

the method comprises the steps that terminal equipment receives a sub-band selection indication configured for the terminal equipment by base station equipment;

the terminal equipment selects the sub-band by using the sub-band selection indication;

and the terminal equipment reports the feedback information by using the selected sub-band.

An embodiment of the present invention provides a base station device, including:

a configuration module, configured to configure one or more channel state information processes for a terminal device, and configure a sub-band selection indication for the terminal device;

a sending module, configured to send the subband selection indication to the terminal device;

the receiving module is used for receiving the feedback information reported by the terminal equipment;

and the determining module is used for determining feedback information fed back by the terminal equipment selecting sub-band.

An embodiment of the present invention provides a terminal device, including:

a receiving module, configured to receive a subband selection indication configured by a base station device for the terminal device;

a selection module, configured to select a subband using the subband selection indication;

and the sending module is used for reporting the feedback information by utilizing the selected sub-band.

Compared with the prior art, the embodiment of the invention at least has the following advantages:

in the embodiment of the invention, the feedback of a plurality of channel state information processes with different signal hypotheses and/or different interference hypotheses based on the same subband selection is realized by configuring the subband selection dependency relationship of the plurality of channel state information processes.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic flowchart of a method for reporting and determining feedback of a selected sub-band of a terminal device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a base station device according to a fourth embodiment of the present invention

Fig. 3 is a schematic structural diagram of a terminal device according to a fifth embodiment of the present invention.

Detailed Description

The technical solutions in the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

An embodiment of the present invention provides a method for reporting (processing for a terminal device) and determining (processing for a base station device) a terminal device selected subband feedback based on coordinated multipoint transmission, where as shown in fig. 1, the method includes the following steps:

step 101, a base station device configures one or more channel state information processes for a terminal device, and configures a sub-band selection indication for the terminal device.

In the embodiment of the present invention, a base station device needs to configure one or more channel state information processes for a terminal device, and the base station device needs to configure a sub-band selection indication for the terminal device in addition to configuring 1 reporting mode (i.e. a channel state information reporting mode) corresponding to each channel state information process; each channel state information process corresponds to a downlink reference signal resource (such as an nzp csi-RS) resource) and an interference hypothesis in the CoMP measurement set.

It should be noted that, for the channel state information process, a process index number or a reporting mode index number is corresponding to the channel state information process, and taking the process index number as an example, then: the base station equipment needs to allocate a unique process index number to each channel state information process configured to the terminal equipment, and the value range of the process index number is [0, N-1 ]; wherein N represents the maximum number of channel state information processes allowed to be configured; and each channel state information process configured to a terminal device is only configured with a unique process index number, which is different from the process index numbers of any other channel state information process configured to the terminal device.

In the embodiment of the present invention, the configuration manner of the sub-band selection indication includes, but is not limited to: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

(1) Subband selection indications for a subband selection based packet include, but are not limited to:

the base station equipment configures P sub-band selection bitmaps for the terminal equipment; the number P of the configured subband selection bitmaps is the subband selection grouping number of the terminal device, and the number P of the subband selection bitmaps is predetermined by the base station device and the terminal device, or is notified to the terminal device by the base station device through a high-level signaling. And configuring, by the base station device, an effective indication in any bitmap for the terminal device, where the effective indication is used to indicate that the configured N low-to-high (or high-to-low) process indexes correspond to a group of channel state information processes in the N configured channel state information processes, and the group of channel state information processes indicated by the effective indication will adopt the same subband selection when the terminal device selects a subband.

(2) The subband selection indications based on the subband selection reference include, but are not limited to:

and the base station equipment configures a sub-band selection reference process for each configured channel state information process, and the sub-band selection reference process is used for indicating the current channel state information process to perform feedback according to the sub-band selection of which channel state information process when the terminal equipment selects the sub-band. The base station equipment can configure the sub-band selection reference process by directly informing the reference process index; if the reference process index configured for a certain channel state information process by the base station equipment is the same as the index of the channel state information process, the terminal equipment judges that the base station equipment does not configure a sub-band selection reference process for the channel state information process; if the reference process index configured for a certain channel state information process by the base station device is different from the index of the channel state information process, the terminal device should determine that the base station device configures the subband selection reference process for the channel state information process.

Step 102, the base station equipment sends the sub-band selection indication to the terminal equipment.

In a preferred implementation manner of the embodiment of the present invention, the base station device may further configure a sub-band sequence number reporting instruction for the terminal device, and send the sub-band sequence number reporting instruction to the terminal device.

The base station device configures a subband sequence number reporting indication for the terminal device, including but not limited to:

the base station device configures indication information (such as 1-bit indication information) for each channel state information process of the terminal device, and the indication information is used for indicating whether the channel state information process reports the sub-band sequence number or the sub-band combination sequence number in the sub-band reporting mode selected by the terminal device. Or,

the base station equipment configures sub-band serial numbers or sub-band combination serial number reporting indication information (such as 1-bit sub-band serial number or sub-band combination serial number reporting indication information) for each sub-band selection group of the terminal equipment, and the indication information is used for indicating all reporting modes corresponding to the channel state information processes configured with the sub-band selection reporting mode of the terminal equipment in the sub-band selection group, and whether only one common sub-band serial number or sub-band combination serial number is fed back.

It should be noted that the reporting positions of the common subband serial numbers or subband combination serial numbers may be in a reporting mode corresponding to a channel state information process of a certain effective indicator mark in a bitmap agreed in advance by the base station device and the terminal device; for example, the common subband sequence number or subband combination sequence number is reported in a reporting mode corresponding to the channel state information process of the first valid indicator of the subband selection bitmap. In addition, the reporting position of the common subband sequence number or the subband combination sequence number may also be configured by the base station device while configuring the subband selection bitmap.

And 103, the terminal equipment receives the sub-band selection indication from the base station equipment, performs sub-band selection by using the sub-band selection indication, and reports the feedback information by using the selected sub-band.

In the embodiment of the invention, the terminal equipment obtains the sub-band selection indication by receiving the configuration signaling of the base station equipment, and performs sub-band selection according to the sub-band selection indication, so as to measure the feedback information; further, the terminal device using the subband selection indication to perform subband selection includes but is not limited to: when a reporting mode configured for a channel state information process by a base station device selects a reporting mode of a sub-band for a terminal device, the terminal device selects the sub-band for the channel state information process by using a sub-band selection indication.

For the subband selection indication based on the subband selection grouping or the subband selection indication based on the subband selection reference, then:

(1) when the configuration mode of the sub-band selection indication is the sub-band selection indication grouped based on sub-band selection, the terminal device uses the sub-band selection indication to perform sub-band selection, including but not limited to:

A. the terminal equipment searches P sub-band selection bitmaps configured for the terminal equipment by the base station equipment, and obtains all channel state information processes in a sub-band selection group corresponding to the bitmaps by reading an effective indication in any one bitmap of the P sub-band selection bitmaps; the number P of the sub-band selection bitmaps is the sub-band selection grouping number of the terminal equipment, and the number P of the sub-band selection bitmaps is agreed by the base station equipment and the terminal equipment in advance or is notified to the terminal equipment by the base station equipment through high-level signaling.

It should be noted that, if there is no valid indication in a certain sub-band selection bitmap read by the terminal device, the terminal device determines that any channel state information process is not configured in the sub-band selection packet corresponding to the bitmap.

B. And the terminal equipment selects the sub-band to be reported for the channel state information process configured with the sub-band selection reporting mode of the terminal equipment in each sub-band selection group. The method for selecting the sub-band to be reported by the terminal device in the channel state information process configured with the sub-band reporting mode selected by the terminal device in each sub-band selection group includes, but is not limited to: in the non-periodic feedback process, the terminal equipment selects the sub-band to be reported for the channel state information process configured with the sub-band selection and reporting mode of the terminal equipment in each sub-band selection group in a joint sub-band selection mode; or, selecting the sub-band to be reported by the channel state information process configured with the sub-band selection reporting mode of the terminal equipment in each sub-band selection group in a reference sub-band selection mode; or, in the periodic feedback process, the terminal device selects the sub-band to be reported by using a reference sub-band selection mode to select the channel state information process configured with the sub-band selection sub-band reporting mode of the terminal device in each sub-band selection group.

B1, selecting, by the terminal device, a sub-band to be reported for the channel state information process configured with the sub-band selection mode selected by the terminal device in each sub-band selection group in a joint sub-band selection manner, where the selecting includes:

the terminal equipment jointly selects the sub-band according to the channel and/or interference measurement result of the partial channel state information process of the sub-band selection reporting mode configured in one sub-band selection group; the partial channel state information process is a partial or all channel state information process which is triggered by the base station equipment to report non-periodically and is configured with a sub-band reporting mode selected by the terminal equipment; and the sub-band selected by the terminal device is used in the sub-band selection grouping, and the current base station device triggers the non-periodic reporting of the channel state information process of the non-periodic reporting.

It is noted that the process of joint subband selection may be based on some principle; for example, the principle that the average transmission rate of each channel state information process is the maximum, or the principle that the average channel gain of each channel state information process is the maximum, etc.

B2, selecting, by the terminal device, a sub-band to be reported for the channel state information process configured with the sub-band selection reporting mode of the terminal device in each sub-band selection group in a reference sub-band selection manner, where the method includes:

in the non-periodic feedback process, the terminal equipment configures a channel state information process which is configured with a terminal equipment selection sub-band reporting mode in a sub-band selection group and is triggered by the base station equipment to perform non-periodic feedback currently as a reference channel state information process for sub-band selection, and selects a sub-band for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, the terminal equipment selects a sub-band reporting mode for other configured terminal equipment and is triggered by the base station equipment to perform non-periodic feedback, selects a sub-band which is the same as the reference channel state information process, and performs the non-periodic feedback;

in the periodic feedback process, the terminal equipment configures a channel state information process of a sub-band selection sub-band reporting mode selected by the terminal equipment in a sub-band selection group as a reference channel state information process selected by the sub-band, and selects the sub-band for the reference channel state information process according to the channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, the terminal equipment selects a sub-band corresponding to the sub-band serial number reported last time by the reference channel state information process in the periodic feedback for other channel state information processes configured with the terminal equipment selection sub-band reporting mode; the reference channel state information process is indicated to the terminal device by the base station device, or is a channel state information process of which the subband serial number needs to be reported in the subband selection group appointed by the base station device and the terminal device.

(2) When the configuration mode of the sub-band selection indication is the sub-band selection indication based on the sub-band selection reference, the terminal device performs sub-band selection by using the sub-band selection indication, including but not limited to:

the terminal equipment reads any sub-band selection reference process configured with a channel state information process of a sub-band selection reporting mode of the terminal equipment; if the base station device does not configure a sub-band selection reference process for the channel state information process, the terminal device independently selects a sub-band for the channel state information process according to the channel and/or interference measurement result of the channel state information process; if the base station equipment configures a sub-band selection reference process for the channel state information process, in the non-periodic feedback process, the terminal equipment selects the sub-band selected by the sub-band selection reference process in the non-periodic feedback process in the time triggered by the base station equipment; in the periodic feedback process, the terminal equipment selects the sub-band corresponding to the sub-band serial number reported last by the sub-band selection reference process for the channel state information process.

It should be noted that, if the reference process index configured by the base station device for the channel state information process is the same as the index of the channel state information process, the terminal device determines that the base station device does not configure the subband selection reference process for the channel state information process; and if the reference process index configured for the channel state information process by the base station equipment is different from the index of the channel state information process, the terminal equipment determines that the sub-band selection reference process is configured for the channel state information process by the base station equipment.

In a preferred embodiment of the present invention, when a base station configures a subband sequence number reporting indicator for a terminal device and sends the subband sequence number reporting indicator to the terminal device, then: the terminal equipment can also receive a sub-band sequence number reporting indication configured for the terminal equipment by the base station equipment, and report the feedback information by using the selected sub-band and the sub-band sequence number reporting indication.

The reporting of the feedback information by the terminal equipment by using the selected sub-band and the sub-band sequence number includes but is not limited to: the terminal equipment judges whether to report the sub-band serial number or the sub-band combination serial number for the channel state information process configured with the sub-band reporting mode selected by the terminal equipment according to the sub-band serial number reporting indication (namely the reporting indication information of the sub-band serial number or the sub-band combination serial number) of each sub-band selection grouping or each channel state information process; if the terminal equipment judges that a channel state information process needs to report the sub-band serial number or the sub-band combination serial number, the sub-band serial number or the sub-band combination serial number is contained in a reporting mode corresponding to the channel state information process; if the channel state information process configured with the terminal equipment selection subband reporting mode is configured with subband sequence number feedback, the terminal equipment reports feedback information containing channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on the subband corresponding to the subband sequence number reported last by the channel state information process for the channel state information process; if the channel state information process configured with the terminal equipment selection sub-band reporting mode is not configured with sub-band sequence number feedback, and the configuration mode of the sub-band selection indication is the sub-band selection indication based on the sub-band selection grouping, the terminal equipment reports the feedback information including channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on the sub-band corresponding to the sub-band sequence number which is reported last by other channel state information processes of the same sub-band selection grouping with the channel state information process for the channel state information process; if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection reference, the terminal equipment reports the feedback information including the channel quality indication CQI and/or the precoding matrix indication PMI and/or the rank indication RI on the subband corresponding to the subband sequence number reported last by the subband selection reference process of the channel state information process for the channel state information process.

And step 104, the base station equipment receives the feedback information reported by the terminal equipment and determines the feedback information fed back by the terminal equipment selecting sub-band.

The base station equipment receives the feedback information reported by the terminal equipment and determines the feedback information fed back by the terminal equipment selecting the sub-band, and the method comprises the following steps: the base station equipment receives sub-band feedback information of a channel state information process configured with a sub-band reporting mode selected by the terminal equipment; if the channel state information process is configured with sub-band sequence number feedback, the base station equipment determines that the sub-band feedback information reported by the channel state information process of the terminal equipment is the sub-band feedback information of the sub-band corresponding to the sub-band sequence number reported last time by the channel state information process; if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection grouping, the base station equipment reads the subband serial number reported last time by other channel state information processes of the same subband selection grouping with the channel state information process, and determines that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband serial number; if the channel state information process is not configured with subband sequence number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection reference, the base station equipment reads the subband sequence number reported last time by the subband selection reference process of the channel state information process and determines that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband sequence number.

In summary, in the embodiments of the present invention, by configuring the subband selection dependency relationship of multiple channel state information processes, multiple channel state information processes with different signal hypotheses and/or different interference hypotheses are implemented to perform feedback based on the same subband selection, so as to ensure that multiple transmission points select the same subband.

Example two

The second embodiment of the present invention provides a method for reporting and determining terminal device selected subband feedback based on coordinated multipoint transmission, where it is assumed that there are 3 transmission points TP1, TP2, and TP3 in a measurement set of a terminal device, and a base station device configures channel state information processes and indexes of each channel state information process, downlink reference signal resources for signal and interference measurement, a reporting mode, a subband selection grouping bitmap, and other information for the terminal device, as shown in table 3.

Table 3 channel state information process configuration 1 of terminal device

The base station equipment configures 1 subband selection group for the terminal equipment, the bitmap of the configured subband selection group is 0111, the lowest bit in the bitmap corresponds to a channel state information process 1, the highest bit corresponds to a channel state information process 4, and 1 in the bitmap indicates that the corresponding channel state information process is in the subband selection group; the base station equipment configures 1-bit sub-band combination serial number reporting indication information for the sub-band selection group, indicates that in the sub-band selection group, all reporting modes corresponding to the channel state information processes adopting the same sub-band selection only feed back one common sub-band combination serial number; and the base station equipment and the terminal equipment agree that: and reporting the sub-band combination serial number in a reporting mode of a channel state information process corresponding to the lowest bit 1 in the bitmap.

The terminal equipment receives the configuration of the base station equipment, reads a bitmap 0111 of a sub-band selection group, and judges that the same sub-band is selected by channel state information processes 1, 2 and 3 configured with a non-periodic reporting mode 2-2; and according to the reporting positions of the sub-band combination serial numbers appointed by the base station equipment and the terminal equipment, judging that the sub-band combination serial numbers are reported in a reporting mode corresponding to the channel state information process 1.

Assuming that the base station device triggers the aperiodic reporting of the channel state information processes 1, 2, 3, and 4 at the same time, the terminal device jointly selects subbands for the channel state information processes 1, 2, and 3 according to the previous subband selection decision, and reports aperiodic feedback for the channel state information processes 1, 2, 3, and 4. Wherein, the non-periodic feedback of the channel state information process 1 comprises reporting of a sub-band combination serial number; in the aperiodic report of the channel state information processes 2 and 3, the subband combination serial number is not reported.

EXAMPLE III

Assuming that there are 3 transmission points TP1, TP2, and TP3 in a measurement set of a terminal device, a base station device configures a channel state information process and information of an index, a signal and interference measurement downlink reference signal resource, a reporting mode, a subband selection grouping bitmap, and the like of each channel state information process for the terminal device, as shown in table 4.

Table 4 channel state information process configuration 2 of terminal device

A sub-band selection reference process configured for a channel state information process 1 of a terminal device by a base station device is a channel state information process 1, sub-band selection reference processes configured for channel state information processes 2 and 3 are the channel state information process 1, and a sub-band selection reference process configured for a channel state information process 4 is a channel state information process 4; and simultaneously, the base station equipment reports the sub-band serial number configured for each channel state information process configured for the terminal equipment, wherein 1 represents the sub-band serial number needing to be reported, and 0 represents the sub-band serial number not needing to be reported.

The terminal equipment receives the configuration of the base station equipment, reads the sub-band selection reference process configuration of each configured channel state information process, and judges that the sub-band selection reference process configuration of the channel state information process 1 configured with the periodic reporting mode 2-1 is the same as the index number of the channel state information process, so that the channel state information process 1 independently selects a sub-band, the sub-band sequence number reporting indication of the channel state information process 1 is 1, and the sub-band sequence number needs to be fed back in the periodic reporting; the subband selection reference processes configured with the processes 2 and 3 for periodically reporting the channel state information are both the process 1 for periodically reporting the channel state information, and the reporting indications of the subband serial numbers of the processes 2 and 3 for periodically reporting the channel state information are 0, so that the subband serial numbers do not need to be fed back in the periodic reporting.

Further, the terminal equipment selects a sub-band for the channel state information process 1, and carries out periodic reporting, wherein the periodic reporting comprises sub-band sequence number feedback; the channel state information processes 2 and 3 adopt the sub-band reported last time with the channel state information process 1, and the periodic reporting of the channel state information processes 2 and 3 does not contain the sub-band serial number.

Example four

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a base station apparatus, as shown in fig. 2, where the base station apparatus includes:

a configuration module 11, configured to configure one or more channel state information processes for a terminal device, and configure a subband selection indication for the terminal device;

a sending module 12, configured to send the subband selection indication to the terminal device;

a receiving module 13, configured to receive feedback information reported by the terminal device;

and a determining module 14, configured to determine feedback information fed back by the terminal device selecting a sub-band.

The configuration module 11 is further configured to allocate a unique process index number to each channel state information process configured to the terminal device, where a value range of the process index number is [0, N-1 ]; wherein, the N represents the maximum number of channel state information processes allowed to be configured.

The configuration mode of the sub-band selection indication comprises the following steps: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

A subband selection indication for the subband-based selection packet; the configuration module 11 is further configured to configure P subband selection bitmaps for the terminal device, where the number P of the subband selection bitmaps is a subband selection grouping number of the terminal device, and the number P of the subband selection bitmaps is agreed in advance by the base station device and the terminal device or is notified to the terminal device by the base station device through a high-level signaling; and configuring an effective indication in any bitmap for the terminal device, where the effective indication is used to indicate that the configured N low-to-high process indexes correspond to a group of channel state information processes in the N configured channel state information processes, and the group of channel state information processes indicated by the effective indication adopt the same subband selection when the terminal device selects a subband.

A subband selection indication for a subband selection based reference; the configuration module 11 is further configured to configure a subband selection reference process for each configured channel state information process, where the subband selection reference process is used to instruct the current channel state information process to perform subband selection for the terminal device, and perform feedback according to subband selection of which channel state information process.

The configuration module 11 is further configured to configure a sub-band sequence number reporting instruction for the terminal device;

the sending module 12 is further configured to send the sub-band sequence number reporting instruction to the terminal device.

The configuration module 11 is further configured to configure indication information for each channel state information process of the terminal device, where the indication information is used to indicate whether the channel state information process reports a sub-band sequence number or a sub-band combination sequence number in a sub-band reporting mode selected by the terminal device; or configuring sub-band serial numbers or sub-band combination serial number reporting indication information for each sub-band selection group of the terminal equipment, wherein the indication information is used for indicating all reporting modes corresponding to the channel state information processes configured with the sub-band selection sub-band reporting mode of the terminal equipment in the sub-band selection group, and whether only one common sub-band serial number or sub-band combination serial number is fed back.

The receiving module 13 is specifically configured to receive subband feedback information of a channel state information process of the terminal device, where the channel state information process is configured in a subband reporting mode selected by the terminal device;

the determining module 14 is specifically configured to determine, if the channel state information process configures subband sequence number feedback, that the subband feedback information reported by the channel state information process of the terminal device is subband feedback information of a subband corresponding to a subband sequence number reported last time by the channel state information process;

if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection grouping, reading subband serial numbers reported by other channel state information processes of the same subband selection grouping with the channel state information process at the latest time, and determining that the subband feedback information reported by the channel state information process of the terminal equipment is subband feedback information of a subband corresponding to the read subband serial number;

and if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on subband selection reference, reading the subband serial number reported last time by the subband selection reference process of the channel state information process, and determining that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband serial number.

The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.

EXAMPLE five

Based on the same inventive concept as the above method, an embodiment of the present invention further provides a terminal device, as shown in fig. 3, where the terminal device includes:

a receiving module 21, configured to receive a subband selection indication configured by a base station device for the terminal device;

a selecting module 22, configured to perform subband selection using the subband selection indication;

and a sending module 23, configured to report the feedback information using the selected sub-band.

The selecting module 22 is specifically configured to select a sub-band for a channel state information process by using the sub-band selection indication when the reporting mode configured for the channel state information process by the base station device is the reporting mode in which the terminal device selects the sub-band.

When the configuration mode of the sub-band selection indication is the sub-band selection indication grouped based on sub-band selection; the selecting module 22 is further configured to search P subband selection bitmaps configured by the base station device for the terminal device, and obtain all channel state information processes in a subband selection packet corresponding to the bitmap by reading an effective indication in any one bitmap of the P subband selection bitmaps; the number P of the sub-band selection bitmaps is the sub-band selection grouping number of the terminal equipment, and the number P of the sub-band selection bitmaps is agreed by the base station equipment and the terminal equipment in advance or is notified to the terminal equipment by the base station equipment through a high-level signaling; and selecting the sub-band to be reported by a channel state information process configured with a sub-band reporting mode selected by the terminal equipment in each sub-band selection group.

The selecting module 22 is further configured to select, in the aperiodic feedback process, a sub-band to be reported for a channel state information process configured with a sub-band reporting mode selected by the terminal device in each sub-band selection group in a joint sub-band selection manner; or, selecting the sub-band to be reported by the channel state information process configured with the sub-band selection reporting mode of the terminal equipment in each sub-band selection group in a reference sub-band selection mode; or, in the periodic feedback process, a reference sub-band selection mode is adopted to select the sub-band to be reported for the channel state information process configured with the sub-band reporting mode selected by the terminal equipment in each sub-band selection group.

The selecting module 22 is further configured to jointly select a sub-band according to a channel and/or interference measurement result of a partial channel state information process in a sub-band selection grouping, where the partial channel state information process is configured in a sub-band selection sub-band reporting mode selected by a terminal device; the partial channel state information process is a partial or all channel state information process which is triggered by the base station equipment to report non-periodically and is configured with a sub-band reporting mode selected by the terminal equipment; the sub-band selected by the terminal device is used in the sub-band selection grouping, and the non-periodic reporting of the channel state information process of the non-periodic reporting is triggered by the base station device currently.

The selecting module 22 is further configured to configure, in the aperiodic feedback process, one of the subband selection groups with the terminal device selection subband reporting mode and a channel state information process triggered by the base station device for aperiodic feedback currently as a reference channel state information process for subband selection, and select a subband for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, selecting a sub-band reporting mode for other channel state information processes which are configured with the terminal equipment and triggered by the base station equipment to perform non-periodic feedback currently, and selecting a sub-band which is the same as the reference channel state information process to perform the non-periodic feedback;

in the periodic feedback process, configuring a channel state information process of a sub-band selection grouping, in which the terminal equipment selects a sub-band reporting mode, as a reference channel state information process for sub-band selection, and selecting a sub-band for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, selecting a sub-band corresponding to the sub-band serial number reported last by the reference channel state information process for other channel state information processes configured with the sub-band reporting mode selected by the terminal equipment; the reference channel state information process is indicated to the terminal device by the base station device, or is a channel state information process of which the subband serial number needs to be reported in a subband selection group appointed by the base station device and the terminal device.

When the configuration mode of the sub-band selection indication is the sub-band selection indication based on the sub-band selection reference; the selecting module 22 is further configured to read any subband selection reference process configured with the channel state information process of the terminal device selecting the subband reporting mode; if the base station equipment does not configure a sub-band selection reference process for the channel state information process, independently selecting a sub-band for the channel state information process according to a channel and/or interference measurement result of the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is the same as the index of the channel state information process, the base station equipment does not configure a sub-band selection reference process for the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is different from the index of the channel state information process, the base station equipment configures a sub-band selection reference process for the channel state information process; if the base station equipment configures a sub-band selection reference process for the channel state information process, selecting the sub-band selected by the sub-band selection reference process in the non-periodic feedback of the channel state information process in the non-periodic feedback process triggered by the base station equipment in the non-periodic feedback process; or in the process of periodic feedback, selecting the sub-band corresponding to the sub-band serial number reported last by the sub-band selection reference process for the channel state information process.

The receiving module 21 is further configured to receive a sub-band sequence number reporting indication configured by the base station device for the terminal device;

the sending module 23 is specifically configured to report the feedback information by using the selected subband and the subband sequence number reporting indicator.

The sending module 23 is specifically configured to determine whether to report a sub-band sequence number or a sub-band combination sequence number for a channel state information process configured with a sub-band reporting mode selected by the terminal device according to a sub-band sequence number reporting indication of each sub-band selection packet or each channel state information process; if the sub-band serial number or the sub-band combination serial number needs to be reported by one channel state information process, the sub-band serial number or the sub-band combination serial number is contained in a reporting mode corresponding to the channel state information process; if the channel state information process configured with the sub-band reporting mode selected by the terminal equipment is configured with sub-band sequence number feedback, reporting feedback information including Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) and/or Rank Indication (RI) on a sub-band corresponding to the sub-band sequence number reported last by the channel state information process; if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is subband selection indication based on subband selection grouping, reporting feedback information including channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on a subband corresponding to the subband sequence number which is reported last time by other channel state information processes of the same subband selection grouping with the channel state information process for the channel state information process; and if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is a subband selection indication based on subband selection reference, reporting feedback information including Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) and/or Rank Indication (RI) on a subband corresponding to the subband sequence number reported last by the subband selection reference process of the channel state information process for the channel state information process.

The modules of the device can be integrated into a whole or can be separately deployed. The modules can be combined into one module, and can also be further split into a plurality of sub-modules.

Through the above description of the embodiments, those skilled in the art will clearly understand that the present invention may be implemented by software plus a necessary general hardware platform, and certainly may also be implemented by hardware, but in many cases, the former is a better embodiment. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.

Those skilled in the art will appreciate that the drawings are merely schematic representations of one preferred embodiment and that the blocks or flow diagrams in the drawings are not necessarily required to practice the present invention.

Those skilled in the art will appreciate that the modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, and may be correspondingly changed in one or more devices different from the embodiments. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims (32)

1. A method for determining feedback of terminal equipment selecting sub-band is characterized by comprising the following steps:

the base station equipment configures one or more channel state information processes for the terminal equipment and configures sub-band selection indication for the terminal equipment;

the base station equipment sends the sub-band selection indication to the terminal equipment;

the base station equipment receives the feedback information reported by the terminal equipment and determines the feedback information fed back by the terminal equipment selecting sub-band according to the sub-band selecting indication;

the configuration mode of the sub-band selection indication comprises the following steps: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

2. The method of claim 1, wherein the method further comprises:

the base station equipment allocates a unique process index number for each channel state information process configured for the terminal equipment, and the value range of the process index number is [0, N-1 ]; wherein, the N represents the maximum number of channel state information processes allowed to be configured.

3. The method of claim 1, wherein the subband selection indication for the subband-based selection packet comprises:

the base station equipment configures P sub-band selection bitmaps for the terminal equipment, the quantity P of the sub-band selection bitmaps is the sub-band selection grouping quantity of the terminal equipment, and the quantity P of the sub-band selection bitmaps is agreed by the base station equipment and the terminal equipment in advance or is notified to the terminal equipment by the base station equipment through a high-level signaling; and the number of the first and second groups,

the base station device configures an effective indication in any bitmap for the terminal device, the effective indication is used for indicating that configured N process indexes from low to high correspond to a group of channel state information processes in N configured channel state information processes, and the group of channel state information processes indicated by the effective indication adopt the same subband selection when the terminal device selects subbands.

4. The method of claim 1, wherein the subband selection indication based on the subband selection reference comprises:

and the base station equipment configures a sub-band selection reference process for each configured channel state information process, and the sub-band selection reference process is used for indicating the current channel state information process to perform feedback according to the sub-band selection of which channel state information process when the terminal equipment selects the sub-band.

5. The method of claim 1, wherein the method further comprises:

and the base station equipment configures a sub-band sequence number reporting instruction for the terminal equipment and sends the sub-band sequence number reporting instruction to the terminal equipment.

6. The method as claimed in claim 5, wherein said base station device configuring the sub-band sequence number reporting indicator for the terminal device comprises:

the base station equipment configures indication information for each channel state information process of the terminal equipment, and the indication information is used for indicating whether the channel state information process reports the sub-band serial number or the sub-band combination serial number in the sub-band reporting mode selected by the terminal equipment; or,

and the base station equipment selects and groups each sub-band of the terminal equipment to configure sub-band serial numbers or sub-band combination serial number reporting indication information, and the indication information is used for indicating all reporting modes corresponding to the channel state information processes configured with the terminal equipment selection sub-band reporting mode in the sub-band selection group whether to feed back only one common sub-band serial number or sub-band combination serial number.

7. The method of claim 1, wherein the receiving, by the base station device, the feedback information reported by the terminal device and determining the feedback information fed back by the terminal device selecting the sub-band comprises:

the base station equipment receives sub-band feedback information of a channel state information process configured with a sub-band reporting mode selected by the terminal equipment;

if the channel state information process is configured with sub-band sequence number feedback, the base station device determines that the sub-band feedback information reported by the channel state information process of the terminal device is the sub-band feedback information of the sub-band corresponding to the sub-band sequence number reported last time by the channel state information process;

if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection grouping, the base station equipment reads the subband serial number reported last time by other channel state information processes of the same subband selection grouping with the channel state information process, and determines that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband serial number;

if the channel state information process is not configured with subband sequence number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection reference, the base station equipment reads the subband sequence number reported last time by the subband selection reference process of the channel state information process and determines that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband sequence number.

8. A method for reporting feedback of terminal equipment selection sub-band is characterized in that the method comprises the following steps:

the method comprises the steps that terminal equipment receives one or more channel state information processes configured for the terminal equipment by base station equipment and a sub-band selection indication;

the terminal equipment selects the sub-band by using the sub-band selection indication;

the terminal equipment reports feedback information by using the selected sub-band according to the sub-band selection indication;

the configuration mode of the sub-band selection indication comprises the following steps: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

9. The method of claim 8, wherein the terminal device utilizing the subband selection indication for subband selection comprises:

and when the reporting mode configured for a channel state information process by the base station equipment is the reporting mode for selecting the sub-band for the terminal equipment, the terminal equipment selects the sub-band for the channel state information process by using the sub-band selection indication.

10. The method according to claim 8 or 9, wherein when the configuration mode of the sub-band selection indication is a sub-band selection indication grouped based on sub-band selection, the terminal device performs sub-band selection by using the sub-band selection indication, including:

the terminal equipment searches P sub-band selection bitmaps configured for the terminal equipment by the base station equipment, and obtains all channel state information processes in a sub-band selection group corresponding to the bitmaps by reading an effective indication in any one bitmap of the P sub-band selection bitmaps; the number P of the sub-band selection bitmaps is the sub-band selection grouping number of the terminal equipment, and the number P of the sub-band selection bitmaps is agreed by the base station equipment and the terminal equipment in advance or is notified to the terminal equipment by the base station equipment through a high-level signaling;

and the terminal equipment selects the sub-band to be reported for the channel state information process configured with the sub-band reporting mode selected by the terminal equipment in each sub-band selection group.

11. The method of claim 10, wherein the selecting, by the terminal device, the sub-band to be reported for the csi process configured with the subband reporting mode selected by the terminal device in each subband selection packet comprises:

in the non-periodic feedback process, the terminal equipment selects a sub-band to be reported for a channel state information process configured with a sub-band selection and reporting mode of the terminal equipment in each sub-band selection group in a joint sub-band selection mode; or, selecting the sub-band to be reported by the channel state information process configured with the sub-band selection reporting mode of the terminal equipment in each sub-band selection group in a reference sub-band selection mode; or, in the periodic feedback process, the terminal device selects the sub-band to be reported by using a reference sub-band selection mode for each sub-band selection group configured with the channel state information process of the terminal device selection sub-band reporting mode.

12. The method of claim 11, wherein the terminal device selects the sub-band for reporting by using a joint sub-band selection method for the channel state information process configured with the sub-band reporting mode selected by the terminal device in each sub-band selection packet, comprising:

the terminal equipment jointly selects the sub-band according to the channel and/or interference measurement result of the partial channel state information process of the sub-band selection reporting mode configured in one sub-band selection group; the partial channel state information process is a partial or all channel state information process which is triggered by the base station equipment to report non-periodically and is configured with a sub-band reporting mode selected by the terminal equipment; the sub-band selected by the terminal device is used in the sub-band selection grouping, and the non-periodic reporting of the channel state information process of the non-periodic reporting is triggered by the base station device currently.

13. The method of claim 11, wherein the terminal device selects the sub-band for reporting by using a reference sub-band selection method for the csi process configured with the subband reporting mode selected by the terminal device in each subband selection packet, comprising:

in the non-periodic feedback process, the terminal equipment configures a channel state information process which is configured with a terminal equipment selected sub-band reporting mode in a sub-band selection group and is triggered by the base station equipment to perform non-periodic feedback currently as a reference channel state information process for sub-band selection, and selects a sub-band for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, the terminal equipment selects a sub-band reporting mode for other channel state information processes which are configured with the terminal equipment and triggered by the base station equipment to perform non-periodic feedback currently, selects a sub-band which is the same as the reference channel state information process, and performs the non-periodic feedback;

in the periodic feedback process, the terminal equipment configures a channel state information process of a sub-band selection sub-band reporting mode selected by the terminal equipment in a sub-band selection group as a reference channel state information process selected by the sub-band, and selects the sub-band for the reference channel state information process according to the channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, the terminal equipment selects a sub-band corresponding to the sub-band serial number reported most recently by the reference channel state information process for other channel state information processes configured with the sub-band reporting mode selected by the terminal equipment; the reference channel state information process is indicated to the terminal device by the base station device, or is a channel state information process of which the subband serial number needs to be reported in a subband selection group appointed by the base station device and the terminal device.

14. The method according to claim 8 or 9, wherein when the configuration mode of the sub-band selection indication is a sub-band selection indication based on a sub-band selection reference, the terminal device performs sub-band selection by using the sub-band selection indication, including:

the terminal equipment reads any sub-band selection reference process configured with a channel state information process of a sub-band selection reporting mode selected by the terminal equipment;

if the base station device does not configure a sub-band selection reference process for the channel state information process, the terminal device independently selects a sub-band for the channel state information process according to the channel and/or interference measurement result of the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is the same as the index of the channel state information process, the terminal equipment determines that the base station equipment does not configure a sub-band selection reference process for the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is different from the index of the channel state information process, the terminal equipment determines that the base station equipment configures a sub-band selection reference process for the channel state information process;

if the base station equipment configures a sub-band selection reference process for the channel state information process, in the non-periodic feedback process, the terminal equipment selects the sub-band selected by the sub-band selection reference process in the non-periodic feedback process of the time triggered by the base station equipment for the channel state information process; or in the process of periodic feedback, the terminal equipment selects the sub-band corresponding to the sub-band serial number reported last by the sub-band selection reference process for the channel state information process.

15. The method of claim 8, wherein the process of reporting the feedback information by the terminal device using the selected sub-band further comprises:

and the terminal equipment receives a sub-band sequence number reporting indication configured for the terminal equipment by the base station equipment, and reports feedback information by using the selected sub-band and the sub-band sequence number reporting indication.

16. The method of claim 15, wherein the reporting, by the terminal device, of the feedback information using the selected subband and the subband sequence number reporting indicator comprises:

the terminal equipment judges whether to report the sub-band serial number or the sub-band combination serial number for the channel state information process configured with the sub-band reporting mode selected by the terminal equipment according to the sub-band serial number reporting indication of each sub-band selection group or each channel state information process; if the terminal equipment judges that a channel state information process needs to report the sub-band serial number or the sub-band combination serial number, the terminal equipment comprises the sub-band serial number or the sub-band combination serial number in a reporting mode corresponding to the channel state information process; and the number of the first and second groups,

if the channel state information process configured with the sub-band reporting mode selected by the terminal equipment is configured with sub-band sequence number feedback, the terminal equipment reports feedback information containing Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) and/or Rank Indication (RI) on a sub-band corresponding to the sub-band sequence number reported last time by the channel state information process;

if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is subband selection indication based on subband selection grouping, the terminal equipment reports feedback information including channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on a subband corresponding to the subband sequence number which is reported last time by other channel state information processes of the same subband selection grouping with the channel state information process to the channel state information process;

and if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is subband selection indication based on subband selection reference, the terminal equipment reports feedback information including channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on the subband corresponding to the subband sequence number which is reported last by the subband selection reference process of the channel state information process for the channel state information process.

17. A base station apparatus, comprising:

a configuration module, configured to configure one or more channel state information processes for a terminal device, and configure a sub-band selection indication for the terminal device;

a sending module, configured to send the subband selection indication to the terminal device;

the receiving module is used for receiving the feedback information reported by the terminal equipment;

a determining module, configured to determine, according to the subband selection indication, feedback information fed back by the terminal device selecting a subband;

the configuration mode of the sub-band selection indication comprises the following steps: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

18. The base station apparatus of claim 17,

the configuration module is further configured to allocate a unique process index number to each channel state information process configured to the terminal device, and a value range of the process index number is [0, N-1 ]; wherein, the N represents the maximum number of channel state information processes allowed to be configured.

19. The base station device of claim 17, wherein a subband selection indication for the subband-based selection packet;

the configuration module is further configured to configure P subband selection bitmaps for the terminal device, where the number P of the subband selection bitmaps is a subband selection grouping number of the terminal device, and the number P of the subband selection bitmaps is agreed in advance by the base station device and the terminal device or is notified to the terminal device by the base station device through a high-level signaling; and the number of the first and second groups,

and configuring an effective indication in any bitmap for the terminal equipment, wherein the effective indication is used for indicating that the configured N process indexes from low to high correspond to a group of channel state information processes in the N configured channel state information processes, and the group of channel state information processes indicated by the effective indication adopt the same sub-band selection when the terminal equipment selects the sub-band.

20. The base station apparatus of claim 17, wherein for a subband selection indication based on a subband selection reference;

the configuration module is further configured to configure a subband selection reference process for each configured channel state information process, and the subband selection reference process is used to instruct the current channel state information process to perform subband selection for the terminal device, and perform feedback according to subband selection of which channel state information process.

21. The base station apparatus of claim 17,

the configuration module is further configured to configure a sub-band sequence number reporting indication for the terminal device;

and the sending module is further configured to send the sub-band sequence number reporting indication to the terminal device.

22. The base station apparatus of claim 21,

the configuration module is further configured to configure indication information for each channel state information process of the terminal device, where the indication information is used to indicate whether the channel state information process reports a sub-band sequence number or a sub-band combination sequence number in a sub-band reporting mode selected by the terminal device; or,

and configuring sub-band serial number or sub-band combination serial number reporting indication information for each sub-band selection group of the terminal equipment, wherein the indication information is used for indicating all reporting modes corresponding to the channel state information processes configured with the sub-band selection reporting mode of the terminal equipment in the sub-band selection group, and whether only one common sub-band serial number or sub-band combination serial number is fed back.

23. The base station apparatus of claim 17,

the receiving module is specifically configured to receive subband feedback information of a channel state information process of the terminal device, where the channel state information process is configured with a subband reporting mode selected by the terminal device;

the determining module is specifically configured to determine, if the channel state information process configures subband sequence number feedback, that the subband feedback information reported by the channel state information process of the terminal device is subband feedback information of a subband corresponding to a subband sequence number reported last time by the channel state information process;

if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on the subband selection grouping, reading subband serial numbers reported by other channel state information processes of the same subband selection grouping with the channel state information process at the latest time, and determining that the subband feedback information reported by the channel state information process of the terminal equipment is subband feedback information of a subband corresponding to the read subband serial number;

and if the channel state information process is not configured with subband serial number feedback and the configuration mode of the subband selection indication is the subband selection indication based on subband selection reference, reading the subband serial number reported last time by the subband selection reference process of the channel state information process, and determining that the subband feedback information reported by the channel state information process of the terminal equipment is the subband feedback information of the subband corresponding to the read subband serial number.

24. A terminal device, comprising:

a receiving module, configured to receive one or more channel state information processes configured for the terminal device by a base station device, and a sub-band selection indication;

a selection module, configured to select a subband using the subband selection indication;

a sending module, configured to report feedback information according to the sub-band selection indication by using the selected sub-band;

the configuration mode of the sub-band selection indication comprises the following steps: a subband selection indication for a subband selection group based; or, a subband selection indication based on a subband selection reference.

25. The terminal device of claim 24,

the selecting module is specifically configured to select a sub-band for a channel state information process by using the sub-band selection indication when a reporting mode configured for the channel state information process by the base station device is a reporting mode in which the terminal device selects the sub-band.

26. The terminal device according to claim 24 or 25, wherein when the configuration manner of the sub-band selection indication is a sub-band selection indication grouped based on sub-band selection;

the selection module is further configured to search P subband selection bitmaps configured by the base station device for the terminal device, and obtain all channel state information processes in a subband selection packet corresponding to the bitmaps by reading an effective indication in any one bitmap of the P subband selection bitmaps; the number P of the sub-band selection bitmaps is the sub-band selection grouping number of the terminal equipment, and the number P of the sub-band selection bitmaps is agreed by the base station equipment and the terminal equipment in advance or is notified to the terminal equipment by the base station equipment through a high-level signaling; and selecting the sub-band to be reported by a channel state information process configured with a sub-band reporting mode selected by the terminal equipment in each sub-band selection group.

27. The terminal device of claim 26,

the selecting module is further configured to select a sub-band to be reported for a channel state information process configured with a sub-band reporting mode selected by the terminal device in each sub-band selection group in a joint sub-band selection manner in the aperiodic feedback process; or, selecting the sub-band to be reported by the channel state information process configured with the sub-band selection reporting mode of the terminal equipment in each sub-band selection group in a reference sub-band selection mode; or, in the periodic feedback process, a reference sub-band selection mode is adopted to select the sub-band to be reported for the channel state information process configured with the sub-band reporting mode selected by the terminal equipment in each sub-band selection group.

28. The terminal device of claim 27,

the selection module is further configured to jointly select a sub-band according to a channel and/or interference measurement result of a partial channel state information process in a sub-band selection grouping, where the partial channel state information process is configured in a sub-band selection sub-band reporting mode selected by a terminal device; the partial channel state information process is a partial or all channel state information process which is triggered by the base station equipment to report non-periodically and is configured with a sub-band reporting mode selected by the terminal equipment; the sub-band selected by the terminal device is used in the sub-band selection grouping, and the non-periodic reporting of the channel state information process of the non-periodic reporting is triggered by the base station device currently.

29. The terminal device of claim 27,

the selecting module is further configured to configure, in the aperiodic feedback process, one of the subband selection groups with the terminal device selection subband reporting mode and a channel state information process which is triggered by the base station device to perform aperiodic feedback currently as a reference channel state information process for subband selection, and select a subband for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, selecting a sub-band reporting mode for other channel state information processes which are configured with the terminal equipment and triggered by the base station equipment to perform non-periodic feedback currently, and selecting a sub-band which is the same as the reference channel state information process to perform the non-periodic feedback;

in the periodic feedback process, configuring a channel state information process of a sub-band selection grouping, in which the terminal equipment selects a sub-band reporting mode, as a reference channel state information process for sub-band selection, and selecting a sub-band for the reference channel state information process according to a channel and/or interference measurement result of the reference channel state information process; in the sub-band selection grouping, selecting a sub-band corresponding to the sub-band serial number reported last by the reference channel state information process for other channel state information processes configured with the sub-band reporting mode selected by the terminal equipment; the reference channel state information process is indicated to the terminal device by the base station device, or is a channel state information process of which the subband serial number needs to be reported in a subband selection group appointed by the base station device and the terminal device.

30. The terminal device according to claim 24 or 25, wherein when the configuration mode of the sub-band selection indication is a sub-band selection indication based on a sub-band selection reference;

the selection module is further configured to read any subband selection reference process configured with a channel state information process of the terminal device selecting a subband reporting mode;

if the base station equipment does not configure a sub-band selection reference process for the channel state information process, independently selecting a sub-band for the channel state information process according to a channel and/or interference measurement result of the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is the same as the index of the channel state information process, the base station equipment does not configure a sub-band selection reference process for the channel state information process; if the reference process index configured for the channel state information process by the base station equipment is different from the index of the channel state information process, the base station equipment configures a sub-band selection reference process for the channel state information process;

if the base station equipment configures a sub-band selection reference process for the channel state information process, selecting the sub-band selected by the sub-band selection reference process in the non-periodic feedback of the channel state information process in the non-periodic feedback process triggered by the base station equipment in the non-periodic feedback process; or in the process of periodic feedback, selecting the sub-band corresponding to the sub-band serial number reported last by the sub-band selection reference process for the channel state information process.

31. The terminal device of claim 24,

the receiving module is further configured to receive a sub-band sequence number reporting indication configured for the terminal device by the base station device;

the sending module is specifically configured to report the feedback information by using the selected subband and the subband sequence number reporting indicator.

32. The terminal device of claim 31,

the sending module is specifically configured to determine whether to report a sub-band sequence number or a sub-band combination sequence number for a channel state information process configured with a sub-band reporting mode selected by the terminal device according to a sub-band sequence number reporting indication of each sub-band selection packet or each channel state information process; if the sub-band serial number or the sub-band combination serial number needs to be reported by one channel state information process, the sub-band serial number or the sub-band combination serial number is contained in a reporting mode corresponding to the channel state information process; and the number of the first and second groups,

if the channel state information process configured with the sub-band reporting mode selected by the terminal equipment is configured with sub-band sequence number feedback, reporting feedback information including Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) and/or Rank Indication (RI) on a sub-band corresponding to the sub-band sequence number reported last by the channel state information process for the channel state information process;

if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is subband selection indication based on subband selection grouping, reporting feedback information including channel quality indication CQI and/or precoding matrix indication PMI and/or rank indication RI on a subband corresponding to the subband sequence number which is reported last time by other channel state information processes of the same subband selection grouping with the channel state information process for the channel state information process;

and if the channel state information process configured with the terminal equipment selection subband reporting mode is not configured with subband sequence number feedback, and the configuration mode of the subband selection indication is a subband selection indication based on subband selection reference, reporting feedback information including Channel Quality Indication (CQI) and/or Precoding Matrix Indication (PMI) and/or Rank Indication (RI) on a subband corresponding to the subband sequence number reported last by the subband selection reference process of the channel state information process for the channel state information process.