Channel state information sending method and device

A technology of channel state information and state information, which is applied in the direction of transmission path sub-channel allocation, signaling allocation, and signaling as a feature, and can solve problems such as the inability to realize multiple serving cells

Active Publication Date: 2014-02-12

ZTE CORP

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AI-Extracted Technical Summary

Problems solved by technology

[0014] Aiming at the problem that CSI of multiple serving cells and/or CSI-RS resources cannot be transmitted on PUSCH resources in the rel...

Abstract

Disclosed are a channel state information (CSI) sending method and device. The sending method comprises: a terminal obtaining N physical uplink shared channel (PUSCH) resources for sending CSI, N being an integer greater than or equal to 1; the terminal sending the CSI on the N PUSCH resources according to a predetermined rule. The predetermined rule comprises one of the following: when N=1, the terminal sends the CSI on the resource; when N is greater than 1, the terminal divides the CSI into N groups, each group corresponds to a PUSCH resource, and the CSI of the corresponding group is sent on the corresponding PUSCH resource; when N is greater than 1, the terminal selects 1 PUSCH resource from the N PUSCH resources, and the terminal sends the CSI on the selected PUSCH resource. The present invention can effectively reduce the delay of the CSI report, thereby improving system performance.

Application Domain

Error prevention/detection by using return channelSignal allocation +3

Technology Topic

TelecommunicationsChannel state information +1

Image

Examples

Experimental program(30)

Example Embodiment

[0050] Example one

[0051] In view of the problem that the related art does not support the simultaneous transmission of CSI of multiple serving cells and/or multiple CSI-RS resources, an embodiment of the present invention provides a terminal including a channel state information (CSI) transmission device .

[0052] image 3 It is a schematic structural diagram of a channel state information sending device according to an embodiment of the present invention, such as image 3 As shown, the device includes: an acquisition module 30 for acquiring N physical uplink shared channel PUSCH resources for sending channel state information CSI, where N is an integer greater than or equal to 1; a sending module 32, coupled with the acquiring module 30, According to a predetermined rule, the CSI is sent on the N PUSCH resources.

[0053] In an implementation manner of the embodiment of the present invention, the obtaining module 30 obtains the N PUSCH resources in at least one of the following ways:

[0054] (1) Acquire the N PUSCH resources configured by high-level signaling, and the network side can notify the terminal of the configured PUSCH resources for sending CSI through high-level signaling;

[0055] (2) Acquire the N PUSCH resources indicated by the downlink control information DCI;

[0056] (3) Acquire the N PUSCH resources according to the activation and release of the PUSCH indicated by the downlink control information and the period of the PUSCH resource indicated by the higher layer signaling.

[0057] In an implementation manner of the embodiment of the present invention, the foregoing predetermined rule includes:

[0058] When N=1, the sending module 32 sends the CSI on the 1 resource;

[0059] When N is greater than 1, the sending module 32 may send CSI information on the N resources, or the sending module may also select 1 PUSCH resource from the N PUSCH resources, and the selected 1 PUSCH resource The CSI is sent on.

[0060] In an implementation manner of the embodiment of the present invention, if the current subframe has the PUSCH resource for sending CSI, and the current subframe still has the PUSCH resource for sending data information, the sending module 32 may send the Data information and/or said CSI:

[0061] (1) Simultaneously sending the data information and the CSI on the PUSCH resource corresponding to the sending data information;

[0062] (2) Send the CSI on the PUSCH resource corresponding to the sent data information;

[0063] (3) Select one PUSCH resource to send the data information and the CSI at the same time, wherein the selected one PUSCH resource is one of the PUSCH resource corresponding to the data information and the N PUSCH resources for sending the CSI PUSCH resources;

[0064] (4) Select 1 PUSCH resource to send the CSI information, where the selected 1 PUSCH resource is a PUSCH resource corresponding to sending data information and one PUSCH resource among the N PUSCH resources for sending CSI;

[0065] (5) Send the data information on the PUSCH resource corresponding to the sent data information, and send the CSI on the N PUSCH resources for sending CSI;

[0066] (6) Select N PUSCH resources to send the data information and the CSI, where the selected N PUSCHs are the PUSCH resources corresponding to the data information and the N PUSCH resources among the N resources for sending the CSI .

[0067] In an implementation manner of the embodiment of the present invention, when the sending is based on sending the CSI on 1 PUSCH resource, if the CSI sent in the current subframe is a CSI of a different reporting type or a different reporting priority, the sending module 32 can use one of the following methods to send the CSI on the 1 PUSCH resource:

[0068] (1) Send CSI of k reporting types or k reporting priorities on the 1 PUSCH resource, delete other CSIs of other reporting types or reporting priorities, or place CSIs of other reporting types or reporting priorities on the The physical uplink control channel PUCCH is sent; the k is a positive integer, and the priority value of k is 1, 2, 3, 4, 6 and other values;

[0069] (2) Sending CSI of all reporting types or the reporting priority on the 1 PUSCH resource.

[0070] In an implementation manner of the embodiment of the present invention, the CSI may include: CSI of multiple serving cells and/or CSI of multiple CSI-RS resources.

[0071] In an implementation manner of the embodiment of the present invention, the CSI may be multiple periodic CSI. In the related art, only one periodic CSI can be sent on the PUSCH resource at a time. With this implementation of the embodiment of the present invention, multiple periodic CSI can be sent on the PUSCH resource at the same time, thereby preventing the base station from obtaining each serving cell or CSI. -Delay of channel quality information of RS resources.

[0072] In an implementation of the embodiment of the present invention, such as Figure 4 As shown, when the sending module sends the CSI on N PUSCH resources, the sending module 32 may include: a grouping unit 320 configured to combine the CSI of multiple serving cells and/or the CSI of multiple CSI-RS resources Divided into N groups; the sending unit 322 is coupled with the grouping unit 320, and is used to send a group of CSI on the N PUSCH resources respectively.

[0073] In an implementation manner of the embodiment of the present invention, the grouping unit 320 may group the CSI of multiple serving cells or the CSI of multiple CSI-RS resources into N groups according to one of the following rules:

[0074] (1) Grouping according to the report type, the CSI of the serving cell of the same report type and/or the CSI of the CSI-RS resource is a group;

[0075] (2) Grouping according to the reporting priority, the CSI of the serving cell and/or CSI-RS resource of the same reporting priority is a group;

[0076] (3) Grouping according to the type of serving cell or the type of CSI-RS resource, the CSI of the same type of serving cell or the CSI of the CSI-RS resource is a group;

[0077] (4) Group according to the set of received signaling configuration;

[0078] (5) Each serving cell corresponds to a group, where each group corresponds to the CSI of each CSI-RS resource on the serving cell.

[0079] In an implementation manner of the embodiment of the present invention, the sending module 32 may select PUSCH resources in one of the following ways:

[0080] (1) Select the required number of PUSCH resources with the highest corresponding modulation and coding index. For example, if N PUSCH resources are selected from the PUSCH resource corresponding to the transmitted data information and the N resources for transmitting CSI, then the data is selected to be transmitted The PUSCH resource corresponding to the information and the N PUSCH resources with the highest modulation and coding index among the N resources for sending CSI;

[0081] (2) Select the required number of PUSCH resources with the largest corresponding physical resource block size;

[0082] (3) Select the corresponding PUSCH resource with the highest effective code rate;

[0083] (4) Select PUSCH resources according to the received indication signaling.

[0084] In the following embodiments, the technical solution for the terminal to send CSI will be further described.

Example Embodiment

[0085] Example two

[0086] Figure 5 Is a flowchart of a method for sending channel state information according to an embodiment of the present invention, such as Figure 5 As shown, the method includes the following steps (step S502-step S504):

[0087] Step S502: The terminal obtains N physical uplink shared channel (PUSCH) resources for transmitting channel state information (CSI), where N is an integer greater than or equal to 1;

[0088] Step S504: The terminal sends the CSI on the N PUSCH resources according to a predetermined rule.

[0089] The PUSCH resource in step S502 can be obtained in one or more of the following ways:

[0090] Manner 1: High-level signaling configures PUSCH resources for sending CSI, and obtains the PUSCH resources from high-level signaling;

[0091] Manner 2: Downlink control information (DCI) indicates the PUSCH resource for sending CSI, and acquires the PUSCH resource according to the indication of the DCI;

[0092] Manner 3: The downlink control information indicates the activation and release of the PUSCH resource, the higher layer signaling indicates the period of the PUSCH resource, and the PUSCH resource is acquired according to the indication of the downlink control information and the higher layer signaling.

[0093] Wherein, the predefined rule in step S504 refers to one of the following rules:

[0094] Rule 1: When N=1, send CSI information on 1 PUSCH resource;

[0095] Rule 2: When N is greater than 1, CSI information is sent on N PUSCH resources;

[0096] Rule 3: When N is greater than 1, select 1 PUSCH resource on N PUSCH resources to send CSI information;

[0097] If the current subframe has the PUSCH resource for sending CSI information and the PUSCH resource for sending data information, step S504 can be performed in one of the following ways:

[0098] Method 1: Send data information and CSI information at the same time on the PUSCH resource corresponding to the data information;

[0099] Manner 2: Send CSI information on the PUSCH resource corresponding to the sent data information;

[0100] Manner 3: Select 1 resource from the PUSCH resource corresponding to the transmitted data information and the N PUSCH resources to simultaneously transmit the data information and CSI information;

[0101] Manner 4: Select 1 resource from the PUSCH resource corresponding to the sent data information and the N PUSCH resources to send CSI information;

[0102] Manner 5: Send data information on the PUSCH resource corresponding to the sent data information, and send CSI information on the N PUSCH resources;

[0103] Manner 5: Select N PUSCH resources from the PUSCH resources corresponding to the data information and the N resources to send the data information and CSI information.

[0104] In the embodiment of the present invention, if the CSI is sent on one PUSCH resource in step S504, and if the CSI information sent in the current subframe is CSI information of different reporting types or different reporting priorities, step S504 can be in the following manner One way to send CSI:

[0105] (1) Send CSI information of k reporting types or k reporting priorities, and CSI of other reporting types or reporting priorities are not sent or sent on PUCCH; the k is a positive integer, and the k priority value is 1, 2 , 3, 4, 6 and other values;

[0106] (2) The UE sends all CSI information on the resource.

[0107] In the embodiment of the present invention, CSI includes but is not limited to: CSI information of multiple serving cells and/or CSI information of multiple CSI-RS resources.

[0108] In the embodiment of the present invention, if the CSI is sent on N PUSCH resources in step S504, step S504 includes: dividing the CSI information of multiple serving cells and/or multiple CSI-RS resources into N groups, One set of CSI is sent on PUSCH resources, that is, one set of CSI information is sent on one PUSCH resource.

[0109] In an implementation manner of the embodiment of the present invention, the CSI information of multiple serving cells and/or multiple CSI-RS resources may be grouped according to the following rules:

[0110] Rule 1: According to the reported type, the CSI information of the serving cell and/or CSI-RS resource of the same reported type is a group;

[0111] Rule 2: According to the reported priority, the CSI information of serving cells and/or CSI-RS resources with the same reported priority is a group;

[0112] Rule 3: According to the type of serving cell/node, the CSI information of the same type of serving cell/CSI-RS resource is a group;

[0113] Rule 4: Set grouping according to signaling configuration;

[0114] Rule 5: Each serving cell corresponds to a group, where each group corresponds to the CSI information of each CSI-RS resource on the serving cell.

[0115] In an implementation manner of the embodiment of the present invention, when one or more PUSCH resources need to be selected from multiple PUSCH resources, for example, P PUSCH resources are selected from M PUSCH resources, which can be selected in the following manner:

[0116] (1) Select P PUSCH resources with the highest corresponding modulation coding index;

[0117] (2) Select P PUSCH resources with the largest corresponding physical resource block size;

[0118] (3) Select the corresponding PUSCH resource with the highest effective code rate;

[0119] (4) Select PUSCH resources according to the received indication signaling.

[0120] In an implementation manner of the embodiment of the present invention, when data information and CSI information are transmitted on the same PUSCH resource, the CSI information selects n resource blocks from the resource block corresponding to the PUSCH resource to transmit the CSI information, and the remaining resource blocks are transmitted Data information, where n is the number of resource blocks corresponding to the PUSCH resource for transmitting CSI information.

[0121] The CSI information selects n resource blocks from the resource block corresponding to the PUSCH resource to transmit CSI information, which may include: select the first n resource blocks from the resource block corresponding to the PUSCH resource to transmit CSI information; or, in the PUSCH resource The n selected resource blocks in the corresponding resource block transmit CSI information; or, select discrete resource blocks in the resource block corresponding to the PUSCH resource to transmit CSI information, or, in the resource block corresponding to the PUSCH resource, discrete subcarriers constitute n A resource block transmits CSI information; the size of the data information is calculated according to the resource block remaining after the n resource blocks are removed from the resource block corresponding to the PUSCH resource.

[0122] When data information and CSI information are transmitted on the same PUSCH resource, HARQ-ACK also needs to be transmitted. HARQ-ACK is first mapped from the resource block where the data information is located.

[0123] In an implementation manner of the embodiment of the present invention, if the Orthogonal Frequency Division Multiplexing (OFDM) technology is used to transmit the PUSCH, the resource block refers to the physical resource block. If the single-carrier orthogonal frequency division is used Multiplexing (SC-OFDM) technology transmission, the resource block refers to the resource block after transmission precoding.

Example Embodiment

[0124] Example three

[0125] Corresponding to the foregoing method for sending channel state information, an embodiment of the present invention also provides a method for acquiring channel state information. Image 6 Is a flowchart of a method for acquiring channel state information according to an embodiment of the present invention, such as Image 6 As shown, the method mainly includes the following steps (step S602-step S604):

[0126] Step S602: The base station provides N physical uplink shared channel (PUSCH) resources for transmitting channel state information (CSI) for the terminal;

[0127] Step S604: The base station obtains the channel state information sent by the terminal on the N PUSCH resources;

[0128] The base station provides N PUSCH resources for sending CSI through at least one of the following methods: the base station configures the N PUSCH resources for the terminal through high-level signaling; the base station uses downlink control information DCI indicates the N PUSCH resources of the terminal; the base station indicates the activation and release of the N PUSCHs to the terminal through downlink control information, and indicates the N PUSCHs to the terminal through high-layer signaling Resource cycle.

[0129] In an implementation manner of the embodiment of the present invention, the CSI is multiple periodic CSI.

[0130] In an implementation manner of the embodiment of the present invention, the CSI includes: CSI of multiple serving cells or CSI of multiple CSI-RS resources.

PUM

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