CN107872292B

CN107872292B - Uplink control information transmission method under carrier aggregation, terminal and base station

Info

Publication number: CN107872292B
Application number: CN201610856101.8A
Authority: CN
Inventors: 孙红利; 刘振; 唐轩; 时帅帅
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-09-27
Filing date: 2016-09-27
Publication date: 2021-08-24
Anticipated expiration: 2036-09-27
Also published as: WO2018059378A1; CN107872292A

Abstract

The invention discloses a method, a terminal and a base station for transmitting uplink control information under carrier aggregation, wherein the method comprises the following steps: receiving a first reconfiguration message which is sent by a base station and used for establishing connection, and receiving a second reconfiguration message which is sent by the base station and used for adding a secondary carrier; determining whether to report the CQI/RI periodically according to the first reporting configuration information and the second reporting configuration information, and calculating a subframe used for reporting the CQI/RI on the main carrier or the auxiliary carrier; after a base station activates a first cell and a second cell as a main carrier and an auxiliary carrier, calculating UCI information for transmitting CQI/RI and calculating a carrier where a channel is located according to a judgment result; and transmitting UCI information to the base station according to the calculated subframes, channels and carriers. According to the invention, the calculation is carried out based on the CQI/RI configuration of the main carrier and the auxiliary carrier, so that the technical scheme of the embodiment can carry out UCI transmission on a proper time, a proper channel and a carrier, and the condition that the UCI is not successfully or timely sent can be effectively avoided.

Description

Uplink control information transmission method under carrier aggregation, terminal and base station

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a method, a terminal, and a base station for transmitting uplink control information under carrier aggregation.

Background

To meet peak rate requirements, LTE-a (a subsequent evolution of long term evolution) technology currently supports a maximum bandwidth of 100MHz, however, such a large bandwidth is difficult to find in the existing available spectrum resources, and the large bandwidth brings great difficulty to the hardware design of the base station and the terminal. In addition, there is a need for a technique to fully utilize the spectrum resources scattered over multiple bands. Based on the above considerations, LTE-a introduces a key technology of CA (carrier aggregation).

Reporting of UCI (uplink control information) in the carrier aggregation technology is a very important part, whether UE (terminal) can accurately and effectively transmit the UCI or not plays a deterministic role in real-time AMC (adaptive modulation coding) adjustment at the network side, and is directly concerned about the problem of whether the maximum throughput of a system can be obtained under the existing network or not; if UCI information can not be fed back reasonably in time, serious influence is brought to system capacity and network resource allocation, if a network side does not receive the report of a CQI (channel quality indication) message in the UCI all the time within a period of time, then the network side adopts conservative scheduling to reduce MCS (modulation and coding strategy) and resource allocation; similarly, if the UE cannot feed back ACK/NAK (positive acknowledgement/negative acknowledgement) to the network side on accurate time-frequency resources, DTX (discontinuous transmission) or HARQ Fail (hybrid automatic repeat request) is easily caused, so that the system capacity is significantly reduced and the purpose of carrier aggregation cannot be achieved. Therefore, it is necessary to solve the problem of reasonable transmission of UCI.

Disclosure of Invention

In view of this, the present invention provides a method, a terminal and a base station for transmitting uplink control information under carrier aggregation to accurately and timely complete transmission of UCI.

The technical scheme adopted by the invention for solving the technical problems is as follows:

according to an aspect of the present invention, there is provided a method for transmitting uplink control information under carrier aggregation, in which a base station configures a first cell and a second cell as an uplink and downlink carrier aggregation cooperative relationship, the method including: receiving a first reconfiguration message sent by a base station and used for establishing a connection, wherein the first reconfiguration message is used for issuing first reporting configuration information corresponding to a Channel Quality Indicator/rank Indicator (CQI/RI) in a first cell, and receiving a second reconfiguration message sent by the base station and used for adding an auxiliary carrier, and the second reconfiguration message is used for issuing second reporting configuration information corresponding to the CQI/RI in a second cell; determining whether the CQI/RI is reported periodically according to the first reporting configuration information and the second reporting configuration information, and calculating a subframe used for reporting the CQI/RI on a main carrier or an auxiliary carrier; after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, calculating UCI Information for transmitting the CQI/RI and calculating a carrier where the channel is located according to a judgment result, wherein the UCI Information represents Uplink Control Information, namely Uplink Control Information; and sending the UCI information to the base station according to the calculated subframe, the channel and the carrier.

Optionally, the foregoing method, calculating, according to the determination result, UCI information for transmitting the CQI/RI, and calculating a carrier where the channel is located, specifically includes: when the CQI/RI is reported in a judgment period, acquiring a carrier index from a terminal side log, and detecting the uplink authorization condition of a downlink control information format 0 received on other subframes before the preset time of the subframe; transmitting the CQI/RI of the carrier index indication cell on a physical uplink shared channel of the primary carrier if there is only an uplink grant for the primary carrier; if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, selecting a physical uplink shared channel of a carrier corresponding to the carrier index from the main carrier and the auxiliary carrier to transmit the CQI/RI of the carrier index indication cell; and if no uplink authorization exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell.

Optionally, the foregoing method, calculating, according to the determination result, UCI information for transmitting the CQI/RI, and calculating a carrier where the channel is located, specifically includes: and when the CQI/RI is judged to be reported non-periodically, acquiring a channel quality indication request from preset downlink control information, selecting a physical uplink shared channel of a cell indicated by the channel quality indication request, and transmitting the CQI/RI of the cell indicated by the channel quality indication request.

According to another aspect of the present invention, there is provided a terminal, in which a base station configures a first cell and a second cell as an uplink and downlink carrier aggregation cooperative relationship, the terminal including: a reconfiguration message receiving module, configured to receive a first reconfiguration message sent by a base station and used to establish a connection, where the first reconfiguration message is used to issue first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, and receive a second reconfiguration message sent by the base station and used to add an auxiliary carrier, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in the second cell; a subframe calculation module, configured to determine whether to report the CQI/RI periodically according to the first reporting configuration information and the second reporting configuration information, and calculate a subframe used for reporting the CQI/RI on a primary carrier or a secondary carrier; a channel carrier calculation module, configured to calculate, according to a determination result, UCI Information for transmitting the CQI/RI and a carrier where the channel is located after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information; and the sending module is used for sending the UCI information to the base station according to the calculated subframes, the calculated channels and the calculated carriers.

Optionally, in the front end, the channel carrier calculation module obtains a carrier index from a terminal side log when reporting the CQI/RI in a determination period, and detects an uplink authorization condition of a downlink control information format 0 received on another subframe before the subframe preset time; transmitting the CQI/RI of the carrier index indication cell on a physical uplink shared channel of the primary carrier if there is only an uplink grant for the primary carrier; if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, selecting a physical uplink shared channel of a carrier corresponding to the carrier index from the main carrier and the auxiliary carrier to transmit the CQI/RI of the carrier index indication cell; and if no uplink authorization exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell.

Optionally, in the front end, when determining that the CQI/RI is reported aperiodically, the channel carrier calculation module obtains a channel quality indication request from preset downlink control information, selects a physical uplink shared channel of a cell indicated by the channel quality indication request, and transmits the CQI/RI of the cell indicated by the channel quality indication request.

According to an aspect of the present invention, a method for transmitting uplink control information under carrier aggregation is provided, including: configuring a first cell and a second cell into an uplink and downlink carrier aggregation cooperative relationship; sending a first reconfiguration message for establishing connection to a terminal, where the first reconfiguration message is used to issue first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication (CQI/RI), and send a second reconfiguration message for adding a secondary carrier to the terminal, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in the second cell, so that the terminal determines whether to periodically report the CQI/RI according to the first reporting configuration information and the second reporting configuration information, and calculates a subframe for reporting the CQI/RI on a primary carrier or a secondary carrier; after the first cell and the second cell are used as the main carrier and the auxiliary carrier to be activated, the terminal calculates UCI Information used for transmitting the CQI/RI and calculates the carrier where the channel is located according to a judgment result, wherein the UCI Information represents Uplink Control Information, namely Uplink Control Information; and receiving the UCI information sent by the terminal according to the calculated subframe, the channel and the carrier.

Optionally, the foregoing method, receiving the UCI information sent by the terminal according to the calculated subframe, the channel, and the carrier specifically includes: when the terminal judges that the CQI/RI is reported periodically, detecting the authorization condition of a downlink control information format 0 of the terminal: receiving the CQI/RI of the primary carrier and the secondary carrier on a physical uplink shared channel of the primary carrier if only an uplink grant for the primary carrier exists; and if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, judging whether the current subframe belongs to the main carrier or the auxiliary carrier, and selecting the physical uplink shared channel of the corresponding carrier according to the judgment result to receive the CQI/RI of the corresponding carrier.

Optionally, the foregoing method, receiving the UCI information sent by the terminal according to the calculated subframe, the channel, and the carrier specifically includes: when the terminal judges that the CQI/RI is reported non-periodically, a channel quality indication request is obtained from preset downlink control information, a physical uplink shared channel of a cell indicated by the channel quality indication request is selected, and the CQI/RI of the cell indicated by the channel quality indication request is received.

According to an aspect of the present invention, there is provided a base station, including: a configuration module, configured to configure the first cell and the second cell as an uplink and downlink carrier aggregation cooperative relationship; a reconfiguration message sending module, configured to send a first reconfiguration message used for establishing a connection to a terminal, where the first reconfiguration message is used to send first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, that is, a Channel Quality Indicator/rank Indicator, and send a second reconfiguration message used for adding a secondary carrier to the terminal, where the second reconfiguration message is used to send second reporting configuration information corresponding to the CQI/RI in the second cell, so that the terminal determines whether to periodically report the CQI/RI according to the first reporting configuration information and the second reporting configuration information, and calculates a subframe used for reporting the CQI/RI on a primary carrier or a secondary carrier; a carrier activation module, configured to activate the first cell and the second cell as the primary carrier and the secondary carrier, where the terminal calculates UCI Information for transmitting the CQI/RI according to a determination result and calculates a carrier where the channel is located, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information; and the receiving module is used for receiving the UCI information sent by the terminal according to the calculated subframe, the channel and the carrier.

Optionally, in the base station, when the terminal determines to report the CQI/RI periodically, the receiving module detects an authorization condition of a downlink control information format 0 of the terminal: receiving the CQI/RI of the primary carrier and the secondary carrier on a physical uplink shared channel of the primary carrier if only an uplink grant for the primary carrier exists; and if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, judging whether the current subframe belongs to the main carrier or the auxiliary carrier, and selecting the physical uplink shared channel of the corresponding carrier according to the judgment result to receive the CQI/RI of the corresponding carrier.

Optionally, in the base station, when the terminal determines to report the CQI/RI aperiodically, the receiving module obtains a channel quality indication request from preset downlink control information, selects a physical uplink shared channel of a cell indicated by the channel quality indication request, and receives the CQI/RI of the cell indicated by the channel quality indication request.

According to the above technical solution, the uplink control information transmission method, the terminal and the base station under carrier aggregation of the present invention have at least the following advantages:

according to the technical scheme of the invention, when the base station issues the reconfiguration message, the terminal can reasonably calculate the sub-frames of UCI (uplink control information) used for transmitting ACK/NAK (acknowledgement/negative acknowledgement), CQI/RI and the like based on the CQI/RI configuration of the main carrier and the auxiliary carrier in the reconfiguration message, and further calculate the channel and the carrier used for transmission; the calculation is performed based on the CQI/RI configuration of the primary and secondary carriers, so that the technical scheme of this embodiment can perform UCI transmission at an appropriate time and on an appropriate channel and carrier, and the occurrence of unsuccessful or timely UCI transmission can be effectively avoided.

Drawings

Fig. 1 is a flowchart of a method for transmitting uplink control information under carrier aggregation according to an embodiment of the present invention;

fig. 2 is a schematic flowchart of an uplink control information transmission method under carrier aggregation according to an embodiment of the present invention;

fig. 3 is a flowchart of a method for transmitting uplink control information under carrier aggregation according to an embodiment of the present invention;

fig. 4 is a schematic flowchart of an uplink control information transmission method under carrier aggregation according to an embodiment of the present invention;

fig. 5 is a schematic flowchart of an uplink control information transmission method under carrier aggregation according to an embodiment of the present invention;

fig. 6 is a block diagram of a terminal according to an embodiment of the present invention;

fig. 7 is a flowchart of a method for transmitting uplink control information under carrier aggregation according to an embodiment of the present invention;

fig. 8 is a flowchart of a method for transmitting uplink control information under carrier aggregation according to an embodiment of the present invention;

fig. 9 is a schematic flowchart of an uplink control information transmission method under carrier aggregation according to an embodiment of the present invention;

fig. 10 is a block diagram of a base station according to an embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, an embodiment of the present invention provides a method for transmitting uplink control information under carrier aggregation, where a base station configures a first cell and a second cell as a cooperative relationship of uplink and downlink carrier aggregation, and the method in this embodiment includes:

step S110, receiving a first reconfiguration message sent by the base station for establishing a connection, where the first reconfiguration message is used to issue first reporting configuration information corresponding to CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, and receiving a second reconfiguration message sent by the base station for adding an auxiliary carrier, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in the second cell. In this embodiment, it is assumed that there are two cells, cell1 and cell2, in the existing network side, and cell1 and cell2 are configured as an uplink and downlink carrier aggregation cooperative relationship through the network side; after the UE accesses, the network side adds cell2 as an auxiliary carrier of the UE through an RRC (radio resource control protocol) reconfiguration message; in the UE access process, the network side configures CQI/RI reporting configuration information of the cell1 for the UE through rrcConnectionReconfiguration (reconfiguration message), and configures CQI/RI reporting configuration information of the cell2 for the UE in rrcConnectionReconfiguration, where the reconfiguration message is used to add a secondary carrier, where the reconfiguration message includes reporting configurations of periodic and aperiodic CQIs.

Step S120, according to the first reporting configuration information and the second reporting configuration information, determining whether to report the CQI/RI periodically, and calculating the subframe used for reporting the CQI/RI on the main carrier or the auxiliary carrier. In this embodiment, according to the CQI/RI configuration, the UE may calculate specific CQI reporting subframes k1 and k2(k1 is a reporting subframe on the primary carrier, and k2 is a reporting subframe on the secondary carrier) and an RI reporting subframe, and obtain a CQI reporting mode and a reporting period through RRC reconfiguration. Since the subframe is configured according to the CQI/RI, the UCI such as the CQI/RI can be accurately and reasonably transmitted through the subframe.

Step S130, after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, calculating UCI Information for transmitting a CQI/RI and a carrier where a channel is located according to the determination result, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information. In this embodiment, after the service is started, the base station activates the uplink and downlink primary and secondary carriers, and at this time, the UE needs to feed back UCI information of the primary carrier and the active secondary carrier; the UE selects a channel for sending the primary and secondary carriers ACK/NAK and CQI/RI, for example: determining to perform ACK/NAK feedback on a primary carrier and a secondary carrier on a PUCCH, and reporting CQI/RI of the primary carrier and the secondary carrier on the PUSCH; the UE determines the carrier where the PUCCH channel sending the primary and secondary carrier ACK/NAK is located, and determines the carrier where the PUSCH channel sending the primary and secondary carrier CQI/RI is located, for example: determining ACK/NAK information of a primary carrier and a secondary carrier sent on a PUCCH of the primary carrier; transmitting CQI/RI information of the main carrier on a PUSCH of the main carrier by multiplexing with data; and transmitting the CQI/RI information of the secondary carrier on the PUSCH of the secondary carrier by multiplexing with data.

And step S140, transmitting UCI information to the base station according to the calculated subframes, channels and carriers. According to the technical scheme of the embodiment, aiming at a single-UE or multi-UE mixed carrier aggregation scene, a plurality of UCI multiplexing technologies are provided, when a base station issues a reconfiguration message, a terminal can reasonably calculate sub-frames of UCI used for transmitting ACK/NAK, CQI/RI and the like based on CQI/RI configuration of a main carrier and an auxiliary carrier in the reconfiguration message, and further calculate a channel and a carrier used for transmission; the calculation is performed based on the CQI/RI configuration of the primary and secondary carriers, so that the technical solution of this embodiment can perform UCI transmission at an appropriate time and on an appropriate channel and carrier, and can effectively avoid the occurrence of a situation where UCI is not successfully or timely transmitted, and the flow taking the two cells of cell1 and cell2 as an example is shown in fig. 2.

As shown in fig. 3, an embodiment of the present invention provides a method for transmitting uplink control information under carrier aggregation, and compared with the foregoing embodiment, step S130 of this embodiment specifically includes:

step S131, when the CQI/RI is reported periodically, the carrier index is obtained from the terminal side log, and the uplink authorization condition of the downlink control information format 0 received on other subframes before the preset time of the subframe is detected. In this embodiment, according to the CQI/RI reporting subframe calculated by the UE, the UE will actively perform CQI/RI calculation 2ms or 4ms (which is related to the implementation inside the terminal) before the CQI/RI reporting subframe of each Carrier, and include a Carrier Index indication in the UE Log (terminal side Log) for calculating CQI/RI, namely LTE PUCCH CSF (specific Log type) information, for indicating which Carrier CQI information is currently calculated, which Carrier Index is exemplified by 1.

Step S132, if only the uplink authorization aiming at the main carrier exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink shared channel of the main carrier. In this embodiment, the UE determines the channel used to transmit the CQI/RI of the cell with Carrier Index ═ 1: the UE needs to transmit UCI information on the reporting subframe k1 or k2 of CQI, before transmission, the UE needs to determine first, and if the UE receives DCI (downlink control information) 0 (format 0) uplink grant on the subframe k1-4 (indicating the subframe 4ms before k1, where k1-4 is taken as an example, or k2-2, etc.), the UE reports the CQI/RI of the indicated cell on the PUSCH. If only DCI0 for the primary Carrier is authorized at this time, the UE reports the CQI/RI of the cell indicated by Carrier Index ═ 1 on the PUSCH of the primary Carrier.

Step S133, if there is uplink grant for the primary carrier and the secondary carrier at the same time, selecting a physical uplink shared channel of a carrier corresponding to the carrier index from the primary carrier and the secondary carrier to transmit the CQI/RI of the carrier index indication cell. In this embodiment, if there are two Cell Index indications, Cell Index1 and Cell Index 2, in the DCI0, if there are DCI0 grants of the primary and secondary carriers simultaneously on the k1-4 subframe, the UE selects a PUSCH channel indicating the same Cell as the Carrier Index to perform CQI/RI reporting, that is, the UE performs UCI information reporting of the local Cell on the PUSCH of the Cell indicated by the Cell Index1, and transmits the UCI information in a CQI/RI and data multiplexing manner. Similarly, if the Carrier Index is 2, the UE selects the cell Index 2 to indicate the PUSCH of the cell for CQI/RI reporting.

Step S134, if there is no uplink authorization, transmitting CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell. In this embodiment, the CQI/RI is reported through the PUCCH channel without authorization.

The technical solution of this embodiment is used for the UE to determine the carrier where the PUSCH for transmitting the periodic UCI is located, and a specific flow thereof is shown in fig. 4, where PCC in fig. 1 represents a primary carrier, and when a cell1 is the primary carrier, a PPC is 1.

In an embodiment of the present invention, a method for transmitting uplink control information under carrier aggregation is provided, and compared with the foregoing embodiment, step S130 in this embodiment specifically includes:

when the non-periodic CQI/RI reporting is judged, a channel quality indication request is obtained from preset downlink control information, a physical uplink shared channel of a cell is indicated by the channel quality indication request, and the CQI/RI of the cell is indicated by the channel quality indication request is transmitted. In this embodiment, a CQI Request (CQI Request) indication is included in an LTE DCI Information Report (LTE DCI Information Report) message on the UE side, and the UE needs to make the following determination after receiving the indication: if the CQI Request indication is 1, 2 or 3, indicating that the aperiodic CQI of the main carrier, the first auxiliary carrier or the second auxiliary carrier needs to be reported; next, it is determined that the Cell Index in the DCI Information Report message indicates which carrier the Cell Index (Cell Index) in the DCI Information Report specifies in the current 3GPP protocol, and the UE will send an aperiodic CQI in this carrier regardless of the downlink channel quality of which carrier the current CQI indicates. This is a problem that the aperiodic CQIs of all carriers are indicated to be transmitted on one carrier, and this embodiment proposes: the specific flow of the UE determining the carrier on which the PUSCH for transmitting the aperiodic UCI is located is shown in fig. 5, where the UE selects the scheme for aperiodic CQI reporting by using the PUSCH for the CQI Request indicated carrier, so as to achieve the purpose of reporting the aperiodic CQI on each carrier.

As shown in fig. 6, an embodiment of the present invention provides a terminal, where a base station configures a first cell and a second cell as an uplink and downlink carrier aggregation cooperative relationship, and the terminal of this embodiment includes:

a reconfiguration message receiving module 610, configured to receive a first reconfiguration message sent by a base station and used to establish a connection, where the first reconfiguration message is used to issue first reporting configuration information corresponding to a CQI/RI in a first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, and receive a second reconfiguration message sent by the base station and used to add a secondary carrier, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in a second cell. In this embodiment, it is assumed that there are two cells, cell1 and cell2, in the existing network side, and cell1 and cell2 are configured as an uplink and downlink carrier aggregation cooperative relationship through the network side; after the UE is accessed, the network side adds a cell2 as an auxiliary carrier of the UE through an RRC reconfiguration message; in the UE access process, the network side configures CQI/RI reporting configuration information of the cell1 for the UE through rrcConnectionReconfiguration (reconfiguration message), and configures CQI/RI reporting configuration information of the cell2 for the UE in rrcConnectionReconfiguration, where the reconfiguration message is used to add a secondary carrier, where the reconfiguration message includes reporting configurations of periodic and aperiodic CQIs.

And a subframe calculation module 620, configured to determine whether to report the CQI/RI periodically according to the first reporting configuration information and the second reporting configuration information, and calculate a subframe used for reporting the CQI/RI on the primary carrier or the secondary carrier. In this embodiment, according to the CQI/RI configuration, the UE may calculate specific CQI reporting subframes k1 and k2(k1 is a reporting subframe on the primary carrier, and k2 is a reporting subframe on the secondary carrier) and an RI reporting subframe, and obtain a CQI reporting mode and a reporting period through RRC reconfiguration. Since the subframe is configured according to the CQI/RI, the UCI such as the CQI/RI can be accurately and reasonably transmitted through the subframe.

The channel carrier calculation module 630, after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, calculates UCI Information for transmitting a CQI/RI and a carrier where the channel is located according to the determination result, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information. In this embodiment, after the service is started, the base station activates the uplink and downlink primary and secondary carriers, and at this time, the UE needs to feed back UCI information of the primary carrier and the active secondary carrier; the UE selects a channel for sending the primary and secondary carriers ACK/NAK and CQI/RI, for example: determining to perform ACK/NAK feedback on a primary carrier and a secondary carrier on a PUCCH, and reporting CQI/RI of the primary carrier and the secondary carrier on the PUSCH; the UE determines the carrier where the PUCCH channel sending the primary and secondary carrier ACK/NAK is located, and determines the carrier where the PUSCH channel sending the primary and secondary carrier CQI/RI is located, for example: determining ACK/NAK information of a primary carrier and a secondary carrier sent on a PUCCH of the primary carrier; transmitting CQI/RI information of the main carrier on a PUSCH of the main carrier by multiplexing with data; and transmitting the CQI/RI information of the secondary carrier on the PUSCH of the secondary carrier by multiplexing with data.

A sending module 640, configured to send UCI information to the base station according to the calculated subframe, channel, and carrier. According to the technical scheme of the embodiment, aiming at a single-UE or multi-UE mixed carrier aggregation scene, a plurality of UCI multiplexing technologies are provided, when a base station issues a reconfiguration message, a terminal can reasonably calculate sub-frames of UCI used for transmitting ACK/NAK, CQI/RI and the like based on CQI/RI configuration of a main carrier and an auxiliary carrier in the reconfiguration message, and further calculate a channel and a carrier used for transmission; the calculation is performed based on the CQI/RI configuration of the primary and secondary carriers, so that the technical solution of this embodiment can perform UCI transmission at an appropriate time and on an appropriate channel and carrier, and can effectively avoid the occurrence of a situation where UCI is not successfully or timely transmitted, and the flow taking the two cells of cell1 and cell2 as an example is shown in fig. 2.

Compared with the foregoing embodiments, the channel carrier calculation module 630 of this embodiment obtains the carrier index from the terminal side log when the CQI/RI is periodically reported, and detects the uplink grant condition of the downlink control information format 0 received on other subframes before the subframe preset time. In this embodiment, according to the CQI/RI reporting subframe calculated by the UE, the UE will actively perform CQI/RI calculation 2ms or 4ms (which is related to the implementation inside the terminal) before the CQI/RI reporting subframe of each Carrier, and include a Carrier Index indication in the UE Log (terminal side Log) for calculating CQI/RI, namely LTE PUCCH CSF (specific Log type) information, for indicating which Carrier CQI information is currently calculated, which Carrier Index is exemplified by 1.

And if the uplink authorization only aims at the main carrier, transmitting the CQI/RI of the carrier index indication cell on the physical uplink shared channel of the main carrier. In this embodiment, the UE determines the channel used to transmit the CQI/RI of the cell with Carrier Index ═ 1: the UE needs to transmit UCI information on the reporting subframe k1 or k2 of CQI, before transmission, the UE needs to determine first, and if the UE receives DCI (downlink control information) 0 (format 0) uplink grant on the subframe k1-4 (indicating the subframe 4ms before k1, where k1-4 is taken as an example, or k2-2, etc.), the UE reports the CQI/RI of the indicated cell on the PUSCH. If only DCI0 for the primary Carrier is authorized at this time, the UE reports the CQI/RI of the cell indicated by Carrier Index ═ 1 on the PUSCH of the primary Carrier.

And if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, selecting a physical uplink shared channel transmission carrier index of the carrier corresponding to the carrier index from the main carrier and the auxiliary carrier to indicate the CQI/RI of the cell. In this embodiment, if there are two Cell Index indications, Cell Index1 and Cell Index 2, in the DCI0, if there are DCI0 grants of the primary and secondary carriers simultaneously on the k1-4 subframe, the UE selects the PUSCH channel indicating the same Cell as the Carrier Index to perform CQI/RI reporting, that is, the UE performs UCI information reporting of the Cell on the PUSCH of the Cell indicated by the Cell Index1, and transmits the UCI information in a CQI/RI and data multiplexing manner. Similarly, if the Carrier Index is 2, the UE selects the cell Index 2 to indicate the PUSCH of the cell for CQI/RI reporting.

If no uplink authorization exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell. In this embodiment, the CQI/RI is reported through the PUCCH channel without authorization.

Compared with the foregoing embodiments, in an embodiment of the present invention, when determining that a CQI/RI is reported aperiodically, the channel carrier calculation module 630 of this embodiment obtains a channel quality indication request from preset downlink control information, selects a physical uplink shared channel of a channel quality indication request indication cell, and transmits the CQI/RI of the channel quality indication request indication cell. In this embodiment, a CQI Request (CQI Request) indication is included in an LTE DCI Information Report (LTE DCI Information Report) message on the UE side, and the UE needs to make the following determination after receiving the indication: if the CQI Request indication is 1, 2 or 3, indicating that the aperiodic CQI of the main carrier, the first auxiliary carrier or the second auxiliary carrier needs to be reported; next, it is determined that the Cell Index in the DCI Information Report message indicates which carrier the Cell Index (Cell Index) in the DCI Information Report specifies in the current 3GPP protocol, and the UE will send an aperiodic CQI in this carrier regardless of the downlink channel quality of which carrier the current CQI indicates. This is a problem that the aperiodic CQIs of all carriers are indicated to be transmitted on one carrier, and this embodiment proposes: the specific flow of the UE determining the carrier on which the PUSCH for transmitting the aperiodic UCI is located is shown in fig. 5, where the UE selects the scheme for aperiodic CQI reporting by using the PUSCH for the CQI Request indicated carrier, so as to achieve the purpose of reporting the aperiodic CQI on each carrier.

As shown in fig. 7, an embodiment of the present invention provides a method for transmitting uplink control information under carrier aggregation, including:

step S710, configuring the first cell and the second cell as an uplink and downlink carrier aggregation cooperative relationship. In this embodiment, it is assumed that there are two cells, cell1 and cell2, in the existing network side, and cell1 and cell2 are configured as an uplink and downlink carrier aggregation cooperative relationship through the network side.

Step S720, a first reconfiguration message for establishing connection is sent to the terminal, the first reconfiguration message is used for sending a first reporting configuration information corresponding to CQI/RI under the first cell, the CQI/RI represents Channel Quality Indicator/rank indication, namely Channel Quality Indicator/rank Indicator, a second reconfiguration message for adding a secondary carrier is sent to the terminal, the second reconfiguration message is used for sending a second reporting configuration information corresponding to CQI/RI under the second cell, the second reconfiguration message is used for the terminal to determine whether to periodically report the CQI/RI according to the first reporting configuration information and the second reporting configuration information, and a subframe used for reporting the CQI/RI on the main carrier or the secondary carrier is calculated. In this embodiment, after the UE accesses, the network side adds cell2 as an auxiliary carrier of the UE through an RRC (radio resource control protocol) reconfiguration message; in the UE accessing process, the network side configures CQI/RI reporting configuration information of a cell1 for the UE through rrcConnectionReconfiguration, and configures CQI/RI reporting configuration information of a cell2 for the UE in rrcConnectionReconfiguration, wherein the reconfiguration message is used for adding a secondary carrier, and comprises the reporting configuration of periodic and aperiodic CQI. According to the configuration of the CQI/RI, the UE can calculate specific CQI reporting subframes k1 and k2(k1 is the reporting subframe on the main carrier, and k2 is the reporting subframe on the auxiliary carrier) and the RI reporting subframe, and acquire the reporting mode and the reporting period of the CQI through RRC reconfiguration. Since the subframe is configured according to the CQI/RI, the UCI such as the CQI/RI can be accurately and reasonably transmitted through the subframe.

Step S730, after the first cell and the second cell are activated as the primary carrier and the secondary carrier, the terminal calculates UCI Information for transmitting a CQI/RI and calculates a carrier where a channel is located according to the determination result, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information. In this embodiment, after the service is started, the base station activates the uplink and downlink primary and secondary carriers, and at this time, the UE needs to feed back UCI information of the primary carrier and the active secondary carrier; the UE selects a channel for sending the primary and secondary carriers ACK/NAK and CQI/RI, for example: determining to perform ACK/NAK feedback on a primary carrier and a secondary carrier on a PUCCH, and reporting CQI/RI of the primary carrier and the secondary carrier on the PUSCH; the UE determines the carrier where the PUCCH channel sending the primary and secondary carrier ACK/NAK is located, and determines the carrier where the PUSCH channel sending the primary and secondary carrier CQI/RI is located, for example: determining ACK/NAK information of a primary carrier and a secondary carrier sent on a PUCCH of the primary carrier; transmitting CQI/RI information of the main carrier on a PUSCH of the main carrier by multiplexing with data; and transmitting the CQI/RI information of the secondary carrier on the PUSCH of the secondary carrier by multiplexing with data.

Step S740, receiving UCI information sent by the terminal according to the calculated subframe, channel, and carrier. According to the technical scheme of the embodiment, aiming at a single-UE or multi-UE mixed carrier aggregation scene, a plurality of UCI multiplexing technologies are provided, when a base station issues a reconfiguration message, a terminal can reasonably calculate sub-frames of UCI used for transmitting ACK/NAK, CQI/RI and the like based on CQI/RI configuration of a main carrier and an auxiliary carrier in the reconfiguration message, and further calculate a channel and a carrier used for transmission; the calculation is performed based on the CQI/RI configuration of the primary and secondary carriers, so that the technical solution of this embodiment can perform UCI transmission at an appropriate time and on an appropriate channel and carrier, and can effectively avoid the occurrence of a situation where UCI is not successfully or timely transmitted, and the flow taking the two cells of cell1 and cell2 as an example is shown in fig. 2.

As shown in fig. 8, an embodiment of the present invention provides a method for transmitting uplink control information under carrier aggregation, and compared with the foregoing embodiment, step S840 of this embodiment specifically includes:

step S841, when the terminal judges that the CQI/RI is reported periodically, the authorization condition of the downlink control information format 0 of the terminal is detected. In this embodiment, in the UE access process, the base station side RRC layer issues parameters including CQI/RI reporting configuration to the UE and layers such as MAC/PHY of the base station through rrcConnectionReconfiguration, respectively, so that while the UE knows the CQI/RI reporting configuration on each carrier, the base station also knows relevant parameters of the information reported by the UE, and calculates specific subframes and periods of CQI/RI reporting on each carrier through the parameters. Under the condition that the base station has no uplink service, the base station carries out CQI/RI of the main carrier and the auxiliary carrier on a PUCCH of the main carrier.

Step S842, if there is only uplink grant for the primary carrier, receiving the CQI/RI of the primary carrier and the secondary carrier on the physical uplink shared channel of the primary carrier. In this embodiment, when there is an uplink service, the base station performs CQI/RI detection and reception on the PUSCH channel, and at this time, the base station needs to determine which carrier PUSCH to detect on by using the current DCI grant: when the base station detects that only the uplink authorization of the main carrier exists in the DCI authorization sent to the UE through the PDCCH, the base station can perform CQI/RI detection and reception of the main carrier and the auxiliary carrier on a PUSCH (physical uplink shared channel) of the main carrier.

Step S843, if uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, whether the current subframe belongs to the main carrier or the auxiliary carrier is judged, and the physical uplink shared channel of the corresponding carrier is selected according to the judgment result to receive the CQI/RI of the corresponding carrier. In this embodiment, when there is an uplink grant of the primary and secondary carriers in the DCI grant, the base station needs to make a determination: if the current subframe is the reporting subframe of the first auxiliary carrier, the base station will perform detection and reception of the CQI/RI of the main carrier on the PUSCH of the main carrier. The specific flow of the base station determining on which carrier PUSCH the periodic CQI/RI detection reception is performed is shown in fig. 9.

Compared with the foregoing embodiment, step S840 of this embodiment specifically includes: when the terminal judges that the CQI/RI is reported non-periodically, the channel quality indication request is obtained from the preset downlink control information, the physical uplink shared channel of the cell indicated by the channel quality indication request is selected, and the CQI/RI of the cell indicated by the channel quality indication request is received. In this embodiment, since the reporting time of the aperiodic CQI/RI of the UE is completely determined by the indication of the base station, so that the base station indicates on which carrier to send the CQI Information, and then waits for receiving the aperiodic CQI on the PUSCH of which carrier, the base station in the prior art indicates, through the Cell Index in the PDCCH DCI Information, the carrier on which the UE sends the aperiodic CQI, and the corresponding base station also performs aperiodic reception on this carrier, the UE mentioned in the present invention determines, through the CQI Request indication, which carrier to send the aperiodic CQI, and the receiving mechanism of the corresponding base station is also changed, which has the following specific scheme: once the CQI Request is 1, 2, or 3 in the DCI Information sent by the base station to the UE through the PDCCH, it indicates that the aperiodic CQI of the primary carrier, the first secondary carrier, or the second secondary carrier needs to be reported, and if the current indication is the aperiodic CQI of which carrier, the base station performs detection and reception of the aperiodic CQI/RI on the PUSCH of the carrier. In this method, the DCI information does not need to be changed.

As shown in fig. 10, an embodiment of the present invention provides a base station, including:

a configuring module 1010, configured to configure the first cell and the second cell as an uplink and downlink carrier aggregation cooperative relationship. In this embodiment, it is assumed that there are two cells, cell1 and cell2, in the existing network side, and cell1 and cell2 are configured as an uplink and downlink carrier aggregation cooperative relationship through the network side.

A reconfiguration message sending module 1020, configured to send a first reconfiguration message used for establishing a connection to the terminal, where the first reconfiguration message is used to send first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, that is, a second reconfiguration message used for adding a secondary carrier is sent to the terminal by using a Channel Quality Indicator/rank Indicator, and the second reconfiguration message is used to send second reporting configuration information corresponding to the CQI/RI in the second cell, determine whether to periodically report the CQI/RI, and enable the terminal to calculate a subframe used for reporting the CQI/RI on the primary carrier or the secondary carrier according to the first reporting configuration information and the second reporting configuration information. In this embodiment, after the UE accesses, the network side adds cell2 as an auxiliary carrier of the UE through an RRC (radio resource control protocol) reconfiguration message; in the UE accessing process, the network side configures CQI/RI reporting configuration information of a cell1 for the UE through rrcConnectionReconfiguration, and configures CQI/RI reporting configuration information of a cell2 for the UE in rrcConnectionReconfiguration, wherein the reconfiguration message is used for adding a secondary carrier, and comprises the reporting configuration of periodic and aperiodic CQI. According to the configuration of the CQI/RI, the UE can calculate specific CQI reporting subframes k1 and k2(k1 is the reporting subframe on the main carrier, and k2 is the reporting subframe on the auxiliary carrier) and the RI reporting subframe, and acquire the reporting mode and the reporting period of the CQI through RRC reconfiguration. Since the subframe is configured according to the CQI/RI, the UCI such as the CQI/RI can be accurately and reasonably transmitted through the subframe.

A carrier activation module 1030, configured to activate the first cell and the second cell as a primary carrier and an auxiliary carrier, and calculate, by the terminal according to the determination result, a carrier where a channel is located and UCI Information used for transmitting UCI Information including CQI/RI is calculated, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information. In this embodiment, after the service is started, the base station activates the uplink and downlink primary and secondary carriers, and at this time, the UE needs to feed back UCI information of the primary carrier and the active secondary carrier; the UE selects a channel for sending the primary and secondary carriers ACK/NAK and CQI/RI, for example: determining to perform ACK/NAK feedback on a primary carrier and a secondary carrier on a PUCCH, and reporting CQI/RI of the primary carrier and the secondary carrier on the PUSCH; the UE determines the carrier where the PUCCH channel sending the primary and secondary carrier ACK/NAK is located, and determines the carrier where the PUSCH channel sending the primary and secondary carrier CQI/RI is located, for example: determining ACK/NAK information of a primary carrier and a secondary carrier sent on a PUCCH of the primary carrier; transmitting CQI/RI information of the main carrier on a PUSCH of the main carrier by multiplexing with data; and transmitting the CQI/RI information of the secondary carrier on the PUSCH of the secondary carrier by multiplexing with data.

A receiving module 1040, configured to receive UCI information sent by the terminal according to the calculated subframe, channel, and carrier. According to the technical scheme of the embodiment, aiming at a single-UE or multi-UE mixed carrier aggregation scene, a plurality of UCI multiplexing technologies are provided, when a base station issues a reconfiguration message, a terminal can reasonably calculate sub-frames of UCI used for transmitting ACK/NAK, CQI/RI and the like based on CQI/RI configuration of a main carrier and an auxiliary carrier in the reconfiguration message, and further calculate a channel and a carrier used for transmission; the calculation is performed based on the CQI/RI configuration of the primary and secondary carriers, so that the technical solution of this embodiment can perform UCI transmission at an appropriate time and on an appropriate channel and carrier, and can effectively avoid the occurrence of a situation where UCI is not successfully or timely transmitted, and the flow taking the two cells of cell1 and cell2 as an example is shown in fig. 2.

Compared with the foregoing embodiments, the receiving module 1040 in this embodiment detects an authorization condition of a downlink control information format 0 of a terminal when the terminal determines that a CQI/RI is periodically reported. In this embodiment, in the UE access process, the base station side RRC layer issues parameters including CQI/RI reporting configuration to the UE and layers such as MAC/PHY of the base station through rrcConnectionReconfiguration, respectively, so that while the UE knows the CQI/RI reporting configuration on each carrier, the base station also knows relevant parameters of the information reported by the UE, and calculates specific subframes and periods of CQI/RI reporting on each carrier through the parameters. Under the condition that the base station has no uplink service, the base station carries out CQI/RI of the main carrier and the auxiliary carrier on a PUCCH of the main carrier.

And if the uplink authorization only aims at the main carrier, receiving the CQI/RI of the main carrier and the auxiliary carrier on the physical uplink shared channel of the main carrier. In this embodiment, when there is an uplink service, the base station performs CQI/RI detection and reception on the PUSCH channel, and at this time, the base station needs to determine which carrier PUSCH to detect on by using the current DCI grant: when the base station detects that only the uplink authorization of the main carrier exists in the DCI authorization sent to the UE through the PDCCH, the base station can perform CQI/RI detection and reception of the main carrier and the auxiliary carrier on a PUSCH (physical uplink shared channel) of the main carrier.

And if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, judging whether the current subframe belongs to the main carrier or the auxiliary carrier, and selecting a physical uplink shared channel of the corresponding carrier to receive the CQI/RI of the corresponding carrier according to the judgment result. In this embodiment, when there is an uplink grant of the primary and secondary carriers in the DCI grant, the base station needs to make a determination: if the current subframe is the reporting subframe of the first auxiliary carrier, the base station will perform detection and reception of the CQI/RI of the main carrier on the PUSCH of the main carrier. The specific flow of the base station determining on which carrier PUSCH the periodic CQI/RI detection reception is performed is shown in fig. 9.

Compared with the foregoing embodiments, in an embodiment of the present invention, when the terminal determines to report the CQI/RI aperiodically, the receiving module 1040 obtains a channel quality indication request from preset downlink control information, selects a physical uplink shared channel of a channel quality indication request indication cell, and receives the CQI/RI of the channel quality indication request indication cell. In this embodiment, since the reporting time of the aperiodic CQI/RI of the UE is completely determined by the indication of the base station, so that the base station indicates on which carrier to send the CQI Information, and then waits for receiving the aperiodic CQI on the PUSCH of which carrier, the base station in the prior art indicates, through the Cell Index in the PDCCH DCI Information, the carrier on which the UE sends the aperiodic CQI, and the corresponding base station also performs aperiodic reception on this carrier, the UE mentioned in the present invention determines, through the CQI Request indication, which carrier to send the aperiodic CQI, and the receiving mechanism of the corresponding base station is also changed, which has the following specific scheme: once the CQI Request is 1, 2, or 3 in the DCI Information sent by the base station to the UE through the PDCCH, it indicates that the aperiodic CQI of the primary carrier, the first secondary carrier, or the second secondary carrier needs to be reported, and if the current indication is the aperiodic CQI of which carrier, the base station performs detection and reception of the aperiodic CQI/RI on the PUSCH of the carrier. In this method, the DCI information does not need to be changed.

According to the above embodiments, it can be seen that in the uplink control information transmission method, the terminal, and the base station of the present invention:

1) for a single UE, a transmission technology of uplink and downlink control information UCI under uplink and downlink carrier aggregation can obtain the CQI/RI configuration of a main carrier and an auxiliary carrier through rrcConnectionReconfiguration, the UE calculates specific sub-frames k1 and k2 reported by the UCI according to the configuration, and when sending the UCI information, the UE can select the PUCCH of the main carrier to feed back the ACK/NAK message of the main carrier and the auxiliary carrier, select the PUSCH of the main carrier to send the CQI/RI message of the main carrier, and select the PUSCH of the auxiliary carrier to send the CQI/RI message of the auxiliary carrier.

2) The invention provides a method for UE to determine a Carrier where a PUSCH (physical uplink shared channel) for transmitting periodic UCI (uplink control information), which is disclosed by the invention, is located.

3) For the method for determining the carrier where the PUSCH with the aperiodic UCI is transmitted by the UE, the invention provides that the UE selects the PUSCH of the current carrier which is indicated by the CQI Request in the DCI information and needs aperiodic CQI reporting to send the aperiodic CQI information of the carrier.

4) The invention provides a method for a base station to determine on which PUSCH of an uplink carrier to receive periodic UCI information, wherein the base station judges on subframes of periodic UCI sending subframes k1-4 and k2-4, and if the base station issues uplink authorization to UE at the time and a cell index indication exists in the uplink authorization, the base station receives periodic CQI on the PUSCH of the cell index indication carrier.

5) The invention provides two aperiodic CQI reporting indication methods for a method that a base station determines on which PUSCH of an uplink carrier the aperiodic UCI information is received, or a method that the base station issues aperiodic CQI reporting authorization, wherein the base station finds a cell index of a corresponding carrier from rrcConnectionReconfiguration according to a CQI Request indication issued to UE, and determines the indicated carrier as the carrier where the PUSCH for receiving CQI is located; and the base station judges the cell index indication in the DCI message to be sent to the UE, and if the cell index and the CQI Request indicate different carriers, the cell index is modified, so that the cell index and the CQI Request indicate the same carrier and are determined as the carrier where the PUSCH for receiving the aperiodic CQI is positioned.

Based on the above technical solution, one or more embodiments of the present invention solve the following problems:

1) the number of the carriers is greater than 1, and under the condition that each carrier has uplink service, the periodic CQI of all carriers is reported through the PUSCH multiplexing of the main carrier, which additionally occupies the PUSCH resources of the main carrier, and the larger the number of the auxiliary carriers is, the more PUSCH resources of the main carrier will be occupied to report UCI information of the auxiliary carriers, which is a loss of resources for the main carrier.

2) When the primary carrier of the current UE is simultaneously used as the secondary carrier of other UEs, the resource allocation of the uplink service may be affected. When the number of the UEs using the cell as the primary carrier of the UE is larger, the number of resources that can be allocated to uplink services of the UE secondary carriers is smaller, so that in order to satisfy resource allocation under the condition that the cell serves as both the primary carrier and the secondary carrier, the present invention considers that resources reported by the primary carrier cell serving as UCI are reserved as much as possible for the use of the cell as the secondary carrier of other UEs.

3) Scheduling blockage caused when the UE needs to feed back UCI information of a plurality of cells in the main carrier at the same time is avoided; especially in the periodic UE selection sub-band CQI reporting mode.

4) The problem of periodic collision of CQI reporting periods when the periodic CQI of a plurality of carriers needs to be reported on a main carrier in the same subframe is solved.

5) The problems are solved: when the periodic CQI of the carrier 1 and the aperiodic CQI of the carrier 2 and other carriers collide on the same subframe.

A process of determining transmission UCI by the UE in a mixed carrier aggregation scenario in combination with the technical solutions of the above embodiments is described. In real life, often the same cell is used as both a primary carrier and a secondary carrier, and there may be multiple UEs accessing the same cell at the same time, and this complex scenario is described below by taking three carriers and three UEs as an example, and then a flow is proposed in which the UE determines the carrier where the PUSCH for transmitting UCI is located:

scene description: three UEs, namely UE1, UE2 and UE3, three cells, namely cell1, cell2 and cell3, wherein the UE1 takes cell1 as a main carrier and cell2 as an auxiliary carrier; the UE2 takes cell2 as a main carrier and cell3 as an auxiliary carrier; the UE3 uses cell3 as a primary carrier, cell1 as a secondary carrier, and three cells are used as the primary carrier and the secondary carrier, respectively, and each cell has more than 1 UE instance at the same time.

The first step is as follows: the base station side configures cells 1 and 2, cells 2 and 3, and cells 3 and 1 to be a coordination relationship between uplink and downlink of the CA, configures the maximum number of the auxiliary carriers to be 1, and deploys the scene of three carriers and more carriers again.

The second step is that: the base station sends the CQI/RI reporting configuration of the cell1 in the RRC reconfiguration initially accessed by the UE1, and sends the CQI/RI reporting configuration of the cell2 in the RRC reconfiguration added with the auxiliary carrier; the base station sends the CQI/RI reporting configuration of the cell2 in the RRC reconfiguration initially accessed by the UE2, and sends the CQI/RI reporting configuration of the cell3 in the RRC reconfiguration added with the auxiliary carrier; the base station sends the CQI/RI reporting configuration of the cell3 in the RRC reconfiguration initially accessed by the UE3, and sends the CQI/RI reporting configuration of the cell1 in the RRC reconfiguration added with the auxiliary carrier; the CQI/RI configuration for the same UE on different carriers may be the same or different.

The third step: thirdly, the UE is accessed into the cell and added with corresponding auxiliary carriers according to the deployment in the second step, and uplink and downlink services are carried out on each UE, so that the uplink and downlink main and auxiliary carriers are all activated;

the fourth step: the CQI/RI reporting is described in detail as follows:

for periodic UCI:

the UE1 reports the periodic CQI of the cell1 on the PUSCH of the cell1 and reports the periodic CQI of the cell2 on the PUSCH of the cell 2; the UE2 reports the periodic CQI of the cell2 on the PUSCH of the cell2 and reports the periodic CQI of the cell3 on the PUSCH of the cell 3; the UE3 reports the periodic CQI of the cell3 on the PUSCH of the cell3 and reports the periodic CQI of the cell1 on the PUSCH of the cell 1; the specific reporting scheme is as described in the foregoing embodiments.

For aperiodic UCI:

the UE1 performs aperiodic CQI reporting of cell1 on a PUSCH of cell1 and aperiodic CQI reporting of cell2 on a PUSCH of cell 2; the UE2 performs aperiodic CQI reporting of cell2 on a PUSCH of cell2 and aperiodic CQI reporting of cell3 on a PUSCH of cell 3; the UE3 performs aperiodic CQI reporting of cell3 on a PUSCH of cell3 and aperiodic CQI reporting of cell1 on a PUSCH of cell 1; the specific reporting scheme is as described in the foregoing embodiments.

Accordingly, in a multi-UE mixed carrier aggregation scenario, the base station needs to determine on which PUSCH of the uplink carrier the UCI information reception is performed:

for periodic UCI:

since the uplink is HARQ synchronous transmission, for FDD, after receiving DCI0 uplink grant for 4 subframes, the UE performs uplink data transmission on the PUSCH channel of the granted carrier.

The first step is as follows: after the UE1 completes access, the base station learns the reporting periods of CQI/RI in cell1 and cell2 from the RRC reconfiguration message and calculates specific reported subframes, and then if there is uplink data in the reported subframes of CQI, the base station detects the reported information of CQI in PUSCH. And determines whether to perform detection on PUSCH of Cell1 or Cell2 according to the Cell Index indication when performing authorization in DCI0, as described in the foregoing embodiment.

The second step is that: similarly, after the UE2 completes access, the base station learns the reporting periods of the CQIs in the cell2 and the cell3 from the RRC reconfiguration message and calculates specific reported subframes, and the base station detects the reporting information of the CQI in the PUSCH when the uplink carrier is activated. And determines whether to receive on PUSCH of Cell2 or Cell3 according to the Cell Index indication when authorization is performed in DCI0, which is described in detail in the foregoing embodiment.

The third step: similarly, after the UE3 completes access, the base station learns the reporting periods of the CQIs in the cell3 and the cell1 from the RRC reconfiguration message and calculates specific reported subframes, and the base station detects the reporting information of the CQI in the PUSCH when the uplink carrier is activated. And determining whether to receive the CQI on the PUSCH of Cell3 or Cell1 according to the Cell Index indication when performing the uplink authorization in DCI0, which is specifically described in the foregoing embodiment.

For aperiodic UCI:

for the primary and secondary carriers of each UE, the base station indicates on which carrier the current UE sends the CQI/RI information, and then on which carrier the PUSCH waits for the aperiodic CQI/RI reception, as described in the foregoing embodiments.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, and are not to be construed as limiting the scope of the invention. Those skilled in the art can implement the invention in various modifications, such as features from one embodiment can be used in another embodiment to yield yet a further embodiment, without departing from the scope and spirit of the invention. Any modification, equivalent replacement and improvement made within the technical idea of using the present invention should be within the scope of the right of the present invention.

Claims

1. A transmission method of uplink control information is characterized in that a base station configures a first cell and a second cell into an uplink and downlink carrier aggregation cooperative relationship, and the method comprises the following steps:

receiving a first reconfiguration message sent by a base station and used for establishing a connection, wherein the first reconfiguration message is used for issuing first reporting configuration information corresponding to a Channel Quality Indicator/rank Indicator (CQI/RI) in a first cell, and receiving a second reconfiguration message sent by the base station and used for adding an auxiliary carrier, and the second reconfiguration message is used for issuing second reporting configuration information corresponding to the CQI/RI in a second cell;

determining whether the CQI/RI is reported periodically according to the first reporting configuration information and the second reporting configuration information, and calculating a subframe used for reporting the CQI/RI on a main carrier or an auxiliary carrier;

after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, calculating UCI Information for transmitting the CQI/RI and calculating a carrier where the channel is located according to a judgment result, wherein the UCI Information represents Uplink Control Information, namely Uplink Control Information;

and sending the UCI information to the base station according to the calculated subframe, the channel and the carrier.

2. The method according to claim 1, wherein calculating UCI information for transmitting the CQI/RI and calculating a carrier on which the channel is located according to the determination result specifically includes:

when the CQI/RI is reported in a judgment period, acquiring a carrier index from a terminal side log, and detecting the uplink authorization condition of a downlink control information format 0 received on other subframes before the preset time of the subframe;

transmitting the CQI/RI of the carrier index indication cell on a physical uplink shared channel of the primary carrier if there is only an uplink grant for the primary carrier;

if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, selecting a physical uplink shared channel of a carrier corresponding to the carrier index from the main carrier and the auxiliary carrier to transmit the CQI/RI of the carrier index indication cell;

and if no uplink authorization exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell.

3. The method according to claim 1, wherein calculating UCI information for transmitting the CQI/RI and calculating a carrier on which the channel is located according to the determination result specifically includes:

and when the CQI/RI is judged to be reported non-periodically, acquiring a channel quality indication request from preset downlink control information, selecting a physical uplink shared channel of a cell indicated by the channel quality indication request, and transmitting the CQI/RI of the cell indicated by the channel quality indication request.

4. A terminal, wherein a base station configures a first cell and a second cell as an uplink and downlink carrier aggregation cooperative relationship, the terminal comprising:

a reconfiguration message receiving module, configured to receive a first reconfiguration message sent by a base station and used to establish a connection, where the first reconfiguration message is used to issue first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, and receive a second reconfiguration message sent by the base station and used to add an auxiliary carrier, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in the second cell;

a subframe calculation module, configured to determine whether to report the CQI/RI periodically according to the first reporting configuration information and the second reporting configuration information, and calculate a subframe used for reporting the CQI/RI on a primary carrier or a secondary carrier;

a channel carrier calculation module, configured to calculate, according to a determination result, UCI Information for transmitting the CQI/RI and a carrier where the channel is located after the base station activates the first cell and the second cell as the primary carrier and the secondary carrier, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information;

and the sending module is used for sending the UCI information to the base station according to the calculated subframes, the calculated channels and the calculated carriers.

5. The terminal of claim 4,

the channel carrier computing module acquires a carrier index from a terminal side log when the CQI/RI is reported in a judgment period, and detects the uplink authorization condition of a downlink control information format 0 received on other subframes before the preset time of the subframe; transmitting the CQI/RI of the carrier index indication cell on a physical uplink shared channel of the primary carrier if there is only an uplink grant for the primary carrier; if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, selecting a physical uplink shared channel of a carrier corresponding to the carrier index from the main carrier and the auxiliary carrier to transmit the CQI/RI of the carrier index indication cell; and if no uplink authorization exists, transmitting the CQI/RI of the carrier index indication cell on the physical uplink control channel of the carrier index indication cell.

6. The terminal of claim 4,

and when the channel carrier calculation module judges that the CQI/RI is reported non-periodically, acquiring a channel quality indication request from preset downlink control information, selecting a physical uplink shared channel of a channel quality indication request indication cell, and transmitting the CQI/RI of the channel quality indication request indication cell.

7. A method for transmitting uplink control information under carrier aggregation is characterized by comprising the following steps:

configuring a first cell and a second cell into an uplink and downlink carrier aggregation cooperative relationship;

sending a first reconfiguration message for establishing connection to a terminal, where the first reconfiguration message is used to issue first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication (CQI/RI), and send a second reconfiguration message for adding a secondary carrier to the terminal, and the second reconfiguration message is used to issue second reporting configuration information corresponding to the CQI/RI in the second cell, so that the terminal determines whether to periodically report the CQI/RI according to the first reporting configuration information and the second reporting configuration information, and calculates a subframe for reporting the CQI/RI on a primary carrier or a secondary carrier;

after the first cell and the second cell are used as the main carrier and the auxiliary carrier to be activated, the terminal calculates UCI Information used for transmitting the CQI/RI and calculates the carrier where the channel is located according to a judgment result, wherein the UCI Information represents Uplink Control Information, namely Uplink Control Information;

and receiving the UCI information sent by the terminal according to the calculated subframe, the channel and the carrier.

8. The method according to claim 7, wherein receiving the UCI information sent by the terminal according to the calculated subframe, the calculated channel, and the calculated carrier specifically includes:

when the terminal judges that the CQI/RI is reported periodically, detecting the authorization condition of a downlink control information format 0 of the terminal:

receiving the CQI/RI of the primary carrier and the secondary carrier on a physical uplink shared channel of the primary carrier if only an uplink grant for the primary carrier exists;

and if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, judging whether the current subframe belongs to the main carrier or the auxiliary carrier, and selecting the physical uplink shared channel of the corresponding carrier according to the judgment result to receive the CQI/RI of the corresponding carrier.

9. The method according to claim 7, wherein receiving the UCI information sent by the terminal according to the calculated subframe, the calculated channel, and the calculated carrier specifically includes:

when the terminal judges that the CQI/RI is reported non-periodically, a channel quality indication request is obtained from preset downlink control information, a physical uplink shared channel of a cell indicated by the channel quality indication request is selected, and the CQI/RI of the cell indicated by the channel quality indication request is received.

10. A base station, comprising:

a configuration module, configured to configure the first cell and the second cell as an uplink and downlink carrier aggregation cooperative relationship;

a reconfiguration message sending module, configured to send a first reconfiguration message used for establishing a connection to a terminal, where the first reconfiguration message is used to send first reporting configuration information corresponding to a CQI/RI in the first cell, where the CQI/RI represents a Channel Quality Indicator/rank indication, that is, a Channel Quality Indicator/rank Indicator, and send a second reconfiguration message used for adding a secondary carrier to the terminal, where the second reconfiguration message is used to send second reporting configuration information corresponding to the CQI/RI in the second cell, so that the terminal determines whether to periodically report the CQI/RI according to the first reporting configuration information and the second reporting configuration information, and calculates a subframe used for reporting the CQI/RI on a primary carrier or a secondary carrier;

a carrier activation module, configured to activate the first cell and the second cell as the primary carrier and the secondary carrier, where the terminal calculates UCI Information for transmitting the CQI/RI according to a determination result and calculates a carrier where the channel is located, where the UCI Information indicates Uplink Control Information, that is, Uplink Control Information;

and the receiving module is used for receiving the UCI information sent by the terminal according to the calculated subframe, the channel and the carrier.

11. The base station of claim 10,

when the terminal judges that the CQI/RI is reported periodically, the receiving module detects the authorization condition of a downlink control information format 0 of the terminal: receiving the CQI/RI of the primary carrier and the secondary carrier on a physical uplink shared channel of the primary carrier if only an uplink grant for the primary carrier exists; and if the uplink authorization aiming at the main carrier and the auxiliary carrier exists at the same time, judging whether the current subframe belongs to the main carrier or the auxiliary carrier, and selecting the physical uplink shared channel of the corresponding carrier according to the judgment result to receive the CQI/RI of the corresponding carrier.

12. The base station of claim 10,

and the receiving module acquires a channel quality indication request from preset downlink control information when the terminal judges that the CQI/RI is reported aperiodically, selects a physical uplink shared channel of a cell indicated by the channel quality indication request, and receives the CQI/RI of the cell indicated by the channel quality indication request.