CN113438059B

CN113438059B - HARQ-ACK transmission method and device for enhanced carrier aggregation system

Info

Publication number: CN113438059B
Application number: CN202110736804.8A
Authority: CN
Inventors: 付景兴; 李迎阳; 张世昌; 王轶
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2015-04-09
Filing date: 2015-11-06
Publication date: 2024-04-26
Anticipated expiration: 2035-11-06
Also published as: ES2928338T3; WO2016163720A1; CN113438059A

Abstract

The application discloses a HARQ-ACK transmission method of an enhanced carrier aggregation system, which comprises the following steps: the UE determines the bit number of HARQ-ACK feedback information which needs to be sent in an uplink subframe; the UE determines the bit number of UCI transmitted in the uplink subframe according to the bit number of the HARQ-ACK feedback information transmitted in the uplink subframe and/or the bit number of the CSI information and/or the SR bit number; the UE determines the format of the PUCCH for transmitting the uplink control information and the resource for transmitting the PUCCH according to the bit number of the UCI transmitted in the uplink subframe. By the method and the device, UCI information can be transmitted in different uplink subframes according to different PUCCH formats.

Description

HARQ-ACK transmission method and device for enhanced carrier aggregation system

The application relates to a method and equipment for transmitting HARQ-ACK of an enhanced carrier aggregation system, which is a divisional application of Chinese patent application with the application date of 2015, 11, 6, 201510752710.4 and the name of 'an enhanced carrier aggregation system'.

Technical Field

The present invention relates to a wireless communication system, and more particularly, to a HARQ-ACK transmission method and apparatus for an enhanced carrier aggregation system.

Background

The long term evolution (Long Term Evolution, LTE) system supports two duplex modes, frequency division duplex (Frequency Division Duplex, FDD) and time division duplex (Time Division Duplex, TDD). Fig. 1 is a frame structure of a TDD system. Each radio frame is 10ms in length and equally divided into two half frames of length 5 ms. Each half frame contains 8 slots with a length of 0.5ms and 3 special domains, namely a downlink pilot slot (Downlink Pilot Time Slot, dwPTS), a Guard Period (GP) and an uplink pilot slot (Uplink Pilot Time Slot, upPTS), and the sum of the lengths of the 3 special domains is 1ms. Each subframe consists of two consecutive slots, i.e. the kth subframe contains slot 2k and slot 2k+1. The TDD system supports 7 different TDD uplink and downlink configurations as shown in table 1. In table 1, D represents a downlink subframe, U represents an uplink subframe, and S represents the above special subframe including 3 special domains.

Table 1: uplink and downlink configuration of LTE TDD

For a TDD system, when the number of downlink subframes is greater than that of uplink subframes, a physical downlink shared channel (Physical Downlink SHARED CHANNEL, PDSCH) and a physical downlink control channel (Physical Downlink Control Channel, PDCCH) released by downlink Semi-persistent scheduling (Semi-PERSISTENT SCHEDULING, SPS)/enhanced physical downlink control channel (ENHANCED PHYSICAL Downlink Control Channel, EPDCCH) hybrid automatic repeat request acknowledgement (Hybrid Automatic Repeat-Request Acknowledgement, HARQ-ACK) transmitted in multiple downlink subframes are transmitted on one uplink subframe, as shown in fig. 2. The number of downlink subframes in which HARQ-ACKs are transmitted on one uplink subframe is called the HARQ-ACK bundling window size. For FDD systems, the number of downlink subframes for transmitting HARQ-ACKs on one uplink subframe is 1, i.e. the HARQ-ACK bundling window size is 1.

In order to improve the transmission rate of users, an enhanced (LTE-a) system of an LTE system is proposed. In LTE-a, a larger operating bandwidth is obtained by aggregating a plurality of component carriers (CCs, component Carrier), i.e. carrier aggregation (CA, carrier Aggregation), constituting the downlink and uplink of the communication system, thereby supporting a higher transmission rate. For example, to support a bandwidth of 100MHz, it may be obtained by aggregating 5 CCs of 20 MHz. Here, each CC is referred to as a Cell (Cell). For one UE, the base station may be configured to operate in multiple CCs, one of which is a primary CC (PCC or Pcell) while the other CCs are referred to as secondary CCs (SCCs or scells).

In this CA system, the downlink reference uplink-downlink configuration of one serving cell is determined according to the configuration of the serving cell configured by the UE to transmit HARQ-ACKs and the configuration of this serving cell. The configuration of the serving cell here includes FDD and various TDD uplink and downlink configurations. Then, according to the downlink reference uplink and downlink configuration determination, the HARQ-ACK bundling window of one serving cell and the size thereof can be determined.

One way for the UE to transmit HARQ-ACK feedback Information is physical uplink control channel (Physical Uplink Control Channel, PUCCH) format 3, PUCCH format 3 may support up to 5 cells, PUCCH format 3 may transmit 22 bits of Information, which 22 bits may include HARQ-ACK Information bits, channel State Information (CSI) bits, and scheduling request (Scheduling Request, SR) bits. The resources of PUCCH format 3 for transmitting HARQ-ACK are resources of a set of PUCCH format 3 configured to the UE through higher layer signaling, and then HARQ-ACK information is transmitted through resources of one PUCCH format 3 of the set of PUCCH format 3 resources configured through higher layer signaling by HARQ-ACK resource indication (HARQ-ACK Resource Indicator, ARI) in PDCCH/EPDCCH of the scheduling PDSCH. Wherein the ARI is performed by re-interpreting a transmit power control (Transmission Power Control, TPC) field including TPC for a PDCCH for scheduling Scell and TPC field in PDCCH/EPDCCH for scheduling Pcell with a downlink assignment indication (Downlink Downlink Assignment Indicator, DL DAI) not equal to 1. Specific indications are shown in table 2.

Table 2: PUCCH format 3 resource indication

In the existing CA system, if the UE is configured with the PUCCH format 3 to transmit the HARQ-ACK information, and the total number of bits of the HARQ-ACK information and/or the CSI information and/or the SR is not more than 22 bits, the HARQ-ACK information and/or the CSI information and/or the SR are transmitted by using the PUCCH; performing space binding (Spatial bundling) on the HARQ-ACK, and if the total number of bits of the HARQ-ACK information and/or the CSI information and/or the SR does not exceed 22 bits, transmitting the HARQ-ACK information and/or the CSI information and/or the SR by using the PUCCH; if the total number of bits of the HARQ-ACK information and/or the CSI information and/or the SR still exceeds 22 bits, the UE transmits only the HARQ-ACK information and/or the SR and does not transmit the CSI information.

To further fully utilize the wide spectrum resources, including those of unlicensed bands, a UE may aggregate carrier aggregation systems of more than 5 CCs, resulting in a larger operating bandwidth, e.g., carrier aggregation systems aggregating up to 32 serving cells.

Since the number of serving cells configured by the UE is up to 32, the number of bits of HARQ-ACK is much larger than 22 bits, there have been studies to introduce a new PUCCH format to carry HARQ-ACK bits, which is referred to as PUCCH format X in the present application, where the PUCCH format X can carry N 'bits at maximum, e.g., N' is equal to 64 bits or 128 bits. In addition, since the number of serving cells configured by the UE is very large, and the number of bits required for CSI feedback of a plurality of serving cells is also relatively large, PUCCH format 2/2a/2b currently used for transmitting CSI is insufficient to carry CSI bits of a plurality of serving cells, and thus research has been proposed to introduce a PUCCH format different from PUCCH format 2/2a/2b to carry CSI bits of a plurality of serving cells, and this PUCCH format is referred to as PUCCH format Y in the present application. PUCCH format Y may be one PUCCH format with PUCCH format X, and PUCCH format Y may be PUCCH format 3. The resources of PUCCH format Y used to transmit CSI are configured to the UE through higher layer signaling. Because a new PUCCH channel format is introduced, the problems of channel allocation and multiplexing accordingly need to be solved.

Disclosure of Invention

The application provides a HARQ-ACK transmission method and equipment of an enhanced carrier aggregation system, which can transmit UCI information in different uplink subframes according to different PUCCH formats.

In order to achieve the above purpose, the present application adopts the following technical scheme:

a hybrid automatic repeat request acknowledgement HARQ-ACK transmission method of an enhanced carrier aggregation system comprises the following steps:

the User Equipment (UE) determines the bit number of HARQ-ACK feedback information which needs to be sent in an uplink subframe;

The UE determines the bit number of uplink control information UCI transmitted in the uplink subframe according to the bit number of HARQ-ACK feedback information transmitted in the uplink subframe, the bit number of channel state information CSI and the bit number of scheduling request SR;

The UE determines the format of a Physical Uplink Control Channel (PUCCH) for transmitting UCI and the resource for transmitting the PUCCH according to the bit number of the UCI transmitted in the uplink subframe, and transmits the UCI according to the determined PUCCH format and the determined resource.

Preferably, the determining the format of the PUCCH transmitting UCI and the resource for transmitting PUCCH according to the number of bits of UCI transmitted in the uplink subframe includes:

When the bit number of the UCI is smaller than or equal to a preset positive integer M, determining the format of a PUCCH transmitting the UCI as a PUCCH format 3, wherein the resource transmitting the PUCCH is one of a group of resources of the PUCCH format 3 configured to the UE;

When the bit number of the UCI is larger than a preset positive integer M, determining the format of the PUCCH for transmitting the UCI as a PUCCH format X, wherein the resource for transmitting the PUCCH is one of the resources of a group of PUCCH formats X configured to the UE; the PUCCH format X is a self-defined PUCCH format used for transmitting HARQ-ACK.

Preferably, when the UE is not configured with periodic CSI transmission, the determining the format of the PUCCH transmitting UCI and the resource transmitting PUCCH includes:

When the UE does not have the PUCCH format 3 resource and the PUCCH format X resource indicated by ARI on the uplink subframe, transmitting UCI on the resource of the PUCCH format 1A/1B by adopting the PUCCH format 1A/1B;

when the UE has a PUCCH format 3 resource and a PUCCH format X resource indicated by a hybrid automatic repeat request response resource indication ARI on the uplink subframe, if the bit number of the UCI of the UE is less than or equal to a preset positive integer m, transmitting the UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3; if the bit number of the UCI is larger than m, transmitting the UCI on the resource of the PUCCH format X by adopting the PUCCH format X;

wherein, the PUCCH format X is a customized PUCCH format different from PUCCH format 3.

Preferably, when the UE configures periodic CSI transmission, no SR transmission, and the UE does not have an ARI indicated PUCCH format 3 resource and PUCCH format X resource on the uplink subframe, the determining the format of the PUCCH transmitting UCI and the resource transmitting PUCCH includes:

on the uplink subframe, when the UCI bit number is less than or equal to a preset positive integer m,

If the bit number of the periodic CSI is smaller than or equal to a preset positive integer n', transmitting UCI on the resource of the PUCCH format 2/2A/2B by adopting the PUCCH format 2/2A/2B; if the bit number of the periodic CSI is greater than 11 bits n', transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

Or if only the periodic CSI of one service cell or the periodic CSI of one CSI process of one service cell is configured, transmitting UCI on the resource of the PUCCH format 2/2A/2B by adopting the PUCCH format 2/2A/2B; if the periodic CSI of more than one service cell is configured or the periodic CSI of one CSI process of more than one service cell is configured, transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

On the uplink subframe, when the UCI bit number is greater than m, transmitting UCI on the resource of the PUCCH format Y by adopting the PUCCH format Y;

Wherein, the PUCCH format Y is a self-defined PUCCH format different from the PUCCH format 3 and the PUCCH format 2/2A/2B.

Preferably, when the UE configures periodic CSI transmission and SR transmission and the UE does not have an ARI indicated PUCCH format 3 resource and PUCCH format X resource on the uplink subframe, the determining the format of the PUCCH transmitting UCI and the resource transmitting PUCCH includes:

If the bit number of the periodic CSI is smaller than or equal to a preset positive integer n', the periodic CSI is not transmitted, and HARQ-ACK and SR information in the UCI are transmitted on the resource of the PUCCH format 1A/1B by adopting the PUCCH format 1A/1B; if the bit number of the periodic CSI is greater than n', transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

Or if the sum of the bit number of the periodic CSI and the SR bit number is smaller than or equal to n', UCI adopts PUCCH format 2/2A/2B to transmit UCI on the resource of PUCCH format 2/2A/2B; if the sum of the bit number of the periodic CSI and the bit number of the SR is larger than n', transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

transmitting UCI on the resource of the PUCCH format Y by adopting the PUCCH format Y when the UCI bit number is larger than m on the uplink subframe;

Preferably, when the UE configures periodic CSI transmission and/or SR transmission and the UE has an ARI-indicated PUCCH format 3 resource and PUCCH format X resource on the uplink subframe, the determining the format of the PUCCH transmitting UCI and the resource transmitting PUCCH includes:

If the bit number of UCI is less than or equal to a preset positive integer m, transmitting UCI on PUCCH format 3 resources by using PUCCH format 3; if the number of bits of UCI is greater than m, transmitting UCI on the resource of PUCCH format X by using PUCCH format X;

Or alternatively

If the bit number of the UCI is smaller than or equal to a preset positive integer n', transmitting the UCI on the resource of the PUCCH format 2/2A/2B by adopting the PUCCH format 2/2A/2B; if the bit number of the UCI is greater than the n' and less than or equal to the m, transmitting the UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3; if the number of bits of the UCI is greater than m, transmitting the UCI on the resource of the PUCCH format X by adopting the PUCCH format X;

Preferably, when the resource of PUCCH format Y is configured on the uplink subframe, the determining the format of PUCCH transmitting UCI and the resource of PUCCH includes:

The UE only uses one of the resources of the PUCCH format 3/PUCCH format X and the resources of the PUCCH format Y to transmit the information in the UCI, and preferentially uses the PUCCH format Y and the corresponding resources to transmit the UCI; where "/" indicates or.

Preferably, the preferentially transmitting the UCI using the PUCCH format Y and the corresponding resource includes:

If the bit number of the UCI is less than or equal to L, determining the format of the PUCCH transmitting the UCI as a PUCCH format Y, and the resource transmitting the PUCCH as the resource configured to the PUCCH format Y of the UE; if the number of bits of the UCI is greater than L, determining that the format of the PUCCH transmitting the UCI is the PUCCH format with the largest number of bits carried in the PUCCH format 3/PUCCH format X and the PUCCH format Y, and the resource transmitting the PUCCH is the resource corresponding to the determined PUCCH format and configured to the UE; if the maximum bit number carried in the PUCCH format 3/PUCCH format X and the maximum bit number carried in the PUCCH format Y are the same, determining the PUCCH format for transmitting UCI as the PUCCH format Y, and the resource for transmitting PUCCH as the resource of the PUCCH format Y configured to the UE;

If the maximum bit number carried by the determined PUCCH format is smaller than the bit number of the UCI, discarding all the CSI information from the UCI, or discarding part of the CSI information until the remaining UCI bits are smaller than or equal to the maximum bit number carried by the determined PUCCH format, and transmitting the UCI after discarding part of the CSI information by utilizing the determined PUCCH format and resources;

The PUCCH format Y is a PUCCH format used for transmitting periodic CSI information, the L is the maximum bit number borne by the PUCCH format Y, and the PUCCH format X is a self-defined PUCCH format used for transmitting HARQ-ACK.

Preferably, when the number of bits of the UCI is less than or equal to a maximum value of a maximum number of bits carried in PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and PUCCH format 3/PUCCH format Y configured for transmitting CSI, the determining the format of PUCCH transmitting UCI and the resource for transmitting PUCCH includes:

And the UE selects the PUCCH format with the minimum bearing maximum bit number from the PUCCH format for transmitting the HARQ-ACK and the PUCCH format for transmitting the CSI, wherein the PUCCH format is enough to bear UCI bits in the PUCCH format for transmitting the CSI.

Preferably, when the number of bits of the UCI is greater than a maximum value of the maximum number of bits carried in PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and PUCCH format 3/PUCCH format Y configured for transmitting CSI, the determining the format of PUCCH transmitting UCI and the resource for transmitting PUCCH includes:

The UE selects one PUCCH format with the largest bearing bit number from the PUCCH format for transmitting HARQ-ACK and the PUCCH format for transmitting CSI, discards all periodic CSI information or discards part of periodic CSI information until the bit number of the rest UCI is smaller than the largest bearing bit number of the selected PUCCH format, and selects the PUCCH format with the smallest bearing bit number from the PUCCH format for transmitting HARQ-ACK and the PUCCH format for transmitting CSI and transmits the rest UCI;

Or alternatively

If the UE supports simultaneous transmission of two PUCCHs and the system configures the UE to simultaneously transmit two PUCCHs, the UE determines that HARQ-ACK and SR information in the UCI are transmitted on one PUCCH resource in the two PUCCHs, and transmits CSI information in the UCI on the other PUCCH resource in the two PUCCHs; if the UE supports a PUCCH transmitting a PUCCH resource using HARQ-ACK and a PUCCH resource of periodical CSI at the same time and the system configures the UE to support the PUCCH, the UE transmits the HARQ-ACK and the periodical CSI on the supported one PUCCH; if the UE does not support simultaneous transmission of two PUCCHs, or if the UE supports simultaneous transmission of two PUCCHs but the system is not configured to simultaneously transmit two PUCCHs, or if the UE does not support transmission of a PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, or if the UE supports transmission of a PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI but the system is not configured to transmit the PUCCH, the UE selects one PUCCH format having the largest number of bits to be carried among the PUCCH format transmitting HARQ-ACK and the PUCCH format transmitting CSI, discards all periodic CSI information, or discards part of periodic CSI information until the number of bits to be left is smaller than the largest number of bits to be carried by the selected PUCCH format, and selects a PUCCH having the smallest number of bits to be carried among the PUCCH format transmitting HARQ-ACK and the PUCCH format transmitting CSI to sufficiently carry the remaining UCI.

Preferably, the determining the format of the PUCCH transmitting UCI and the resource for transmitting PUCCH includes:

If the UE supports simultaneous transmission of two PUCCHs and the system configures the UE to simultaneously transmit two PUCCHs, the UE determines that HARQ-ACK and SR information in the UCI are transmitted on one PUCCH resource in the two PUCCHs, and transmits CSI information in the UCI on the other PUCCH resource in the two PUCCHs;

If the UE supports a PUCCH transmitting a PUCCH resource using HARQ-ACK and a PUCCH resource of periodical CSI at the same time and the system configures the UE to support the PUCCH, the UE transmits the HARQ-ACK and the periodical CSI on the supported one PUCCH;

If the UE does not support simultaneous transmission of two PUCCHs, or if the UE supports simultaneous transmission of two PUCCHs but the system is not configured to simultaneously transmit two PUCCHs, or if the UE does not support transmission of a PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, or if the UE supports transmission of a PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI but the system is not configured to transmit the PUCCH, the UE selects one PUCCH format having the largest number of bits to be carried among the PUCCH format transmitting HARQ-ACK and the PUCCH format transmitting CSI, discards all periodic CSI information, or discards part of periodic CSI information until the number of bits to be left is smaller than the largest number of bits to be carried by the selected PUCCH format, and selects a PUCCH having the smallest number of bits to be carried among the PUCCH format transmitting HARQ-ACK and the PUCCH format transmitting CSI to sufficiently carry the remaining UCI.

If the power of the UE is not limited, the UE supports simultaneous transmission of two PUCCHs, and the high-level signaling configures the UE to simultaneously transmit the two PUCCHs, the UE transmits HARQ-ACK and SR information on one PUCCH resource in the two PUCCHs, and transmits CSI information on the other PUCCH resource;

If the power of the UE is not limited and the UE supports a PUCCH transmitting one PUCCH resource using both HARQ-ACK and periodic CSI and the system configures the UE to support the PUCCH, the UE transmits HARQ-ACK and periodic CSI on the supported one PUCCH;

If the UE is not power limited and the UE does not support simultaneous transmission of two PUCCHs, or if the UE is power limited and the UE supports simultaneous transmission of two PUCCHs but the system does not configure the UE to simultaneously transmit two PUCCHs, or if the UE is power limited and the UE does not support transmission of one PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, or the UE is power limited and the UE supports transmission of one PUCCH using PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI but the system does not configure the UE to support the PUCCH, or if the UE is power limited, the UE selects one PUCCH format with the largest number of bits to be carried in the PUCCH format for transmitting HARQ-ACK and the PUCCH format for transmitting CSI, discards all periodic CSI information, or discards part of periodic CSI information until the number of bits to be carried in the PUCCH format for transmitting HARQ-ACK is smaller than the largest number of bits to be carried in the PUCCH format for transmitting CSI selected, the UE selects the largest number of bits to be carried in the PUCCH format for transmitting CSI.

Preferably, the HARQ-ACK/SR transmission of the UE in the uplink subframe only has the resources of PUCCH format 1/1a/1b, and no resource of PUCCH format 3 or no resource of PUCCH format X indicated by the ARI, and when the UE configures CSI transmission of one or more periods in the uplink subframe, the determining the format of PUCCH for transmitting UCI and the resource for transmitting PUCCH includes:

And transmitting the UCI by using PUCCH resources configured to the UE and used for transmitting a plurality of periodic CSI.

Preferably, the HARQ-ACK/SR transmission of the uplink subframe by the UE only has resources of PUCCH format 1/1a/1b, and no PUCCH format 3 resource or PUCCH format X resource indicated by the ARI, then:

When the UE configures CSI transmission of one period in the uplink subframe, the determining a format of a PUCCH transmitting UCI and a resource for transmitting PUCCH includes: when the uplink subframe is required to transmit the HARQ-ACK which only schedules the PDSCH with the DAI equal to 1 and/or SPS downlink transmission in the Pcell and the uplink subframe is not configured with the SR transmission, transmitting the UCI by adopting PUCCH format 2a/2b resources configured for the UE to transmit one periodic CSI; when the uplink subframe does not have the resource of the PUCCH format 3 or the resource of the PUCCH format X indicated by ARI and the uplink subframe is configured with SR transmission, the HARQ-ACK/SR is transmitted by adopting the resource of the PUCCH format 1/1a/1b, and the periodical CSI is not transmitted;

When the UE configures CSI transmission of multiple periods in the uplink subframe, the determining a format of a PUCCH transmitting UCI and a resource for transmitting PUCCH includes: and transmitting the UCI by using PUCCH resources configured to the UE and used for transmitting a plurality of periodic CSI.

Preferably, the transmitting the UCI using PUCCH resources for transmitting the plurality of periodic CSI configured to the UE includes:

when two PUCCH resources configured for the UE for transmitting a plurality of periodic CSI are provided, selecting one from the two PUCCH resources to transmit the UCI according to the bit number of the UCI; the selecting one mode comprises the following steps: if the maximum transmission bit number of the two PUCCH resources is larger than the bit number of the UCI, selecting a PUCCH resource with smaller maximum transmission bit number of the PUCCH resources; otherwise, selecting one PUCCH resource with larger maximum transmission bit number of the two PUCCH resources; when the maximum transmission bit number carried by one selected PUCCH resource is smaller than the bit number of the UCI, the UE discards all periodic CSI information or discards part of periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number which can be carried by the selected PUCCH format, and the UCI subjected to periodic CSI discarding is transmitted by utilizing the selected PUCCH resource; and/or the number of the groups of groups,

When the PUCCH resource configured for the UE to transmit a plurality of periodic CSI is one, if the maximum bit number borne by the PUCCH resource is smaller than the bit number of the UCI, the UE discards all periodic CSI information or discards part of periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number borne by the PUCCH format, and transmits the UCI subjected to periodic CSI discarding by utilizing the resource.

Preferably, the UE has PUCCH format 3 resources or PUCCH format X resources for HARQ-ACK/SR transmission indicated by ARI in the uplink subframe, and then,

When the UE configures only one periodic CSI transmission in the uplink subframe, the determining the format of the PUCCH transmitting UCI and the resource for transmitting PUCCH includes: transmitting the UCI by using a PUCCH format 3 resource for HARQ-ACK/SR transmission or a resource of the PUCCH format X indicated by ARI;

When the UE configures a plurality of periodic CSI transmissions in the uplink subframe, selecting one PUCCH resource to transmit UCI from the PUCCH resources of the alternative PUCCH format according to the bit number of the UCI; wherein the alternative PUCCH format includes: PUCCH format 3/PUCCH format X configured to the UE for transmitting HARQ-ACKs and one or two PUCCH resources different from PUCCH format 2 configured to the UE for transmitting multiple periodic CSI.

When the UE configures only one or more periodic CSI transmissions in the uplink subframe, the determining a format of a PUCCH transmitting UCI and a resource for transmitting the PUCCH includes: selecting one PUCCH resource from PUCCH resources of the alternative PUCCH format according to the bit number of the UCI to transmit the UCI; wherein the alternative PUCCH format includes: PUCCH format 3/PUCCH format X configured to the UE for transmitting HARQ-ACKs and one or two PUCCH resources different from PUCCH format 2 configured to the UE for transmitting multiple periodic CSI.

Preferably, the method for selecting one PUCCH resource includes:

When the bit number of the UCI is smaller than or equal to the maximum value of the maximum bit number borne by each alternative PUCCH resource, the UE selects the PUCCH resource of the PUCCH format which is enough to bear UCI bits from the alternative PUCCH formats, and selects the PUCCH resource of the PUCCH format with the minimum bearing maximum bit number from the PUCCH resources of the selected PUCCH format, so as to transmit the UCI; if there are two PUCCH resources of the selected PUCCH format, one is a new PUCCH resource configured to transmit a plurality of periodic CSI, and the other is a PUCCH resource indicated by ARI and used for HARQIACK/SR, the resource indicated by ARI or the PUCCH resource used to transmit a plurality of periodic CSI is adopted;

When the bit number of UCI to be transmitted of the uplink subframe is larger than the maximum value of the maximum bit numbers carried by the alternative PUCCH formats, the UE selects the PUCCH resources of the PUCCH format with the maximum value of the maximum bit numbers carried in the alternative PUCCH formats; if the maximum bit number carried by the selected PUCCH resource is smaller than the bit number of the UCI, the UE discards all the periodic CSI information or discards a part of the periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number carried by the selected PUCCH format, and the UCI subjected to periodic CSI discarding is transmitted by utilizing the selected resource; if there are two PUCCH resources of the selected PUCCH format, one is a PUCCH resource configured to transmit multiple periodic CSI, and the other is a PUCCH resource indicated by ARI for HARQ-ACK/SR, the resource indicated by ARI or the PUCCH resource transmitting multiple periodic CSI is used for transmitting the UCI.

When the UE configures only one or more periodic CSI transmissions in the uplink subframe, the determining a format of a PUCCH transmitting UCI and a resource for transmitting the PUCCH includes: and transmitting the UCI by using a PUCCH format 3 resource for HARQ-ACK/SR transmission indicated by ARI or a resource of the PUCCH format X.

Preferably, the transmitting the UCI using PUCCH format 3 resources for HARQ-ACK/SR transmission or the PUCCH format X resources indicated by the ARI includes:

when the UCI bit number of all the service cells transmitted by the uplink subframe is smaller than or equal to a preset positive integer M, transmitting the UCI bit by using a PUCCH format 3, wherein ARI in the (e) PDCCH of the scheduling PDSCH indicates a corresponding one of a group of PUCCH format 3 resources configured for the UE by using a high-layer signaling;

When the UCI bit number of all the service cells transmitted by the uplink subframe is larger than M, transmitting the UCI bit by using a PUCCH format X, wherein the ARI indication in the (e) PDCCH of the scheduling PDSCH is a corresponding one of a group of PUCCH format X resources configured for the UE by using a high-layer signaling;

If the maximum transmission bit number of the PUCCH resource indicated by the ARI is larger than the bit number of the UCI, transmitting the UCI by using the PUCCH resource indicated by the ARI; otherwise, the UE discards all the periodic CSI information or discards a part of the periodic CSI information until the bit number of the remaining UCI is less than or equal to the maximum bit number carried by the PUCCH resource indicated by the ARI, and the UCI subjected to periodic CSI discarding is transmitted by using the PUCCH resource indicated by the ARI.

Preferably, the determining the number of bits for sending HARQ-ACK feedback information in the uplink subframe is:

For a serving cell with downlink reference uplink and downlink configuration as FDD, if the transmission mode configured by the UE in the cell is SIMO, the HARQ-ACK transmitted by the serving cell in the uplink subframe is 1 bit, and if the transmission mode configured by the UE in the cell is MIMO, the HARQ-ACK transmitted by the serving cell in the uplink subframe is 2 bits; for a serving cell with downlink reference uplink and downlink configured as TDD, if the transmission mode configured by the UE in the cell is SIMO, the HARQ-ACK transmitted by the serving cell in the uplink subframe is N bits, and if the transmission mode configured by the UE in the cell is MIMO, the HARQ-ACK transmitted by the serving cell in the uplink subframe is 2N bits;

Summing the bit numbers of the HARQ-ACK feedback information transmitted by all the service cells of the UE in the uplink subframe to obtain the bit number of the HARQ-ACK feedback information transmitted in the uplink subframe; or calculating the total number of bits of HARQ-ACK feedback information sent in the uplink subframe according to the received PDCCH/EPDCCH condition;

Wherein, N is the size of HARQ-ACK binding window.

Preferably, the determining the number of bits of UCI transmitted in the uplink subframe includes:

When the transmitted HARQ-ACK does not allow binding operation, summing the bit number, the CSI bit number and the SR bit number of the HARQ-ACK feedback information sent by all the service cells of the UE in the uplink subframe, and taking the summation result as the UCI bit number; or alternatively

When the transmitted HARQ-ACK allows binding operation, summing the bit number, the CSI bit number and the SR bit number of the HARQ-ACK feedback information sent by all the service cells of the UE in the uplink subframe, and taking the summation result as the UCI bit if the summation result is smaller than or equal to a set positive integer M'; if the summation result is greater than a set positive integer M', carrying out space binding on the transmitted HARQ-ACK feedback information, calculating the bit number of the HARQ-ACK feedback information after binding as the bit number of the HARQ-ACK feedback information after updating, summing the bit number, the CSI bit number and the SR bit number of the HARQ-ACK feedback information after updating the uplink subframe of all the serving cells of the UE, and taking the summation result as the UCI bit number.

An HARQ-ACK transmission device of an enhanced carrier aggregation system, comprising: a bit number determining unit, a resource determining unit and a transmitting unit;

The bit number determining unit is used for determining the bit number of HARQ-ACK feedback information which is required to be sent by the UE in one uplink subframe; the method is also used for determining the bit number of uplink control information UCI transmitted in the uplink subframe according to the bit number, the CSI bit number and the SR bit number of the HARQ-ACK feedback information transmitted in the uplink subframe;

the resource determining unit is configured to determine, according to the number of bits of the UCI determined by the number of bits determining unit, a format of a PUCCH transmitting the UCI and a resource for transmitting the PUCCH;

the transmission unit is configured to transmit the UCI according to the PUCCH format and the resource determined by the resource determining unit.

As can be seen from the above technical solution, in the present application, the UE determines the number of bits that it needs to send HARQ-ACK feedback information in one uplink subframe; the UE determines the bit number of uplink control information UCI transmitted in the uplink subframe according to the bit number, the CSI bit number and the SR bit number of the HARQ-ACK feedback information transmitted in the uplink subframe; and determining the format of the PUCCH transmitting the UCI and the resource transmitting the PUCCH according to the determined bit number of the UCI, and transmitting the UCI according to the determined PUCCH format and the resource. The UCI bit total number is utilized to select the PUCCH format and the PUCCH resource, and UCI information can be transmitted in different uplink subframes according to different PUCCH formats.

Drawings

Fig. 1 is an LTE TDD frame structure;

fig. 2 is a HARQ-ACK timing relationship for an LTE TDD serving cell;

Fig. 3 is a flowchart of a HARQ-ACK transmission method of an enhanced carrier aggregation system according to the present application;

Fig. 4 is a diagram one of PUCCH transmission UCI in method three of the third embodiment;

fig. 5 is a diagram two of PUCCH transmission UCI in method three of the third embodiment;

Fig. 6 is a schematic diagram of a basic structure of an HARQ-ACK transmission device of an enhanced carrier aggregation system according to the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings, in order to make the objects, technical means and advantages of the present application more apparent.

Fig. 3 is a flowchart of a HARQ-ACK transmission method of an enhanced carrier aggregation system provided by the present invention, which specifically includes the steps of:

Step 301: the UE determines the number of bits it needs to send HARQ-ACK feedback information in one uplink subframe.

Here, the UE may determine the number of bits that need to send HARQ-ACK feedback information for one uplink subframe according to the number of configured all serving cells, the transmission mode of each serving cell, and the HARQ-ACK bundling window size of each serving cell; or the UE may also receive the base station information signaling, so as to obtain the number of bits that it needs to send HARQ-ACK feedback information in one uplink subframe.

Step 302: the UE determines the number of bits of Uplink Control Information (UCI) transmitted in the uplink subframe according to the number of bits of the HARQ-ACK feedback information transmitted in the uplink subframe, the number of CSI information bits, and the number of SR bits.

The HARQ-ACK information bits, the periodic CSI feedback information bits, and the SR information bits are hereinafter referred to as UCI bits. The CSI is configured periodically, so that some uplink subframes are configured with periodic CSI transmission, some uplink subframes are not configured with periodic CSI transmission, and the number of bits of periodic CSI information transmitted by different uplink subframes may be different. The SR is also configured according to a period, some uplink subframes are configured for SR transmission, some uplink subframes are not configured for SR transmission, and when the SR transmission is configured, the SR is 1 bit.

In addition, the present application is used for solving the problem of HARQ-ACK feedback information transmission, so that the uplink subframes referred to in this step and the previous step are uplink subframes in which HARQ-ACK information needs to be transmitted, and on these uplink subframes in which HARQ-ACK information needs to be transmitted, it is possible that some uplink subframes do not need to transmit CSI information or SR bits, and then the number of bits or SR bits of CSI information on the corresponding uplink subframes is considered to be 0.

Step 303: the UE determines the format of the PUCCH for transmitting the uplink control information and the resource for transmitting the PUCCH according to the bit number of the UCI transmitted in the uplink subframe.

When the plurality of UCI information needs to be transmitted simultaneously in one uplink channel, HARQ-ACK, periodic CSI and SR may be jointly encoded; or may be processed by other methods, and the application is not limited. The application provides that the PUCCH format required to be used, namely PUCCH format 3 or newly defined PUCCH format X or PUCCH format Y is determined according to the total bit number of UCI required to be transmitted in one subframe; accordingly, if PUCCH format 3 or newly defined PUCCH format X is employed, the ARI in the (E) PDCCH is used to dynamically indicate one from among a plurality of such PUCCH format channels semi-statically configured at a higher layer, and if PUCCH format Y is employed, configuration is performed in a semi-static manner.

The technical scheme of the application is further described in detail through several preferred embodiments.

Example 1

In this embodiment, one of PUCCH format 3 and PUCCH format X is selected for UCI transmission according to the determined total number of UCI bits or according to the determined total number of bits of HARQ-ACK/SR.

Specifically, when the UCI bits of all serving cells transmitted in one uplink subframe are less than or equal to a preset positive integer M (e.g., M is equal to 22) bits, UCI bits are transmitted using PUCCH format 3, and the ARI in the (e) PDCCH of the scheduled PDSCH indicates a corresponding one of the resources of a set of PUCCH format 3 configured for the UE using higher layer signaling. When the UCI bits of all serving cells of one uplink subframe transmission are greater than M (e.g., M equals 22) bits, UCI bits are transmitted using PUCCH format X, and the ARI indication in the (e) PDCCH of the scheduled PDSCH is a corresponding one of the resources of a set of PUCCH format X configured for the UE using higher layer signaling, as shown in table 3.

Table 3: PUCCH format X resource indication

With this approach, the PUCCH formats employed by the UE within different uplink subframes may be different. At this time, the higher layer signaling configures a set of PUCCH format 3 resources and a set of PUCCH format X resources for the UE, and applies them to different subframes, respectively.

The above is the manner of selecting PUCCH format and resource in this embodiment. For the determination of UCI bits, it is assumed that in this embodiment, the UE determines the number of bits that need to send HARQ-ACK feedback information for one uplink subframe according to the number of configured all serving cells, the transmission mode of each serving cell, and the HARQ-ACK bundling window size of each serving cell. The following describes a method for the UE to calculate the number of UCI bits that need to be transmitted in one uplink subframe:

firstly, determining the number of HARQ-ACK bits to be transmitted by each serving cell respectively;

The size (Bundling window size) of the bundling window is defined as: according to the downlink reference uplink and downlink configuration, the number of downlink subframes for feeding back the HARQ-ACK feedback information in the PUCCH is the size of the serving cell bundling window, and the sizes of the HARQ-ACK bundling windows in different uplink subframes may be different.

For a serving cell with downlink reference uplink and downlink configured as FDD, the size of a binding window is 1, so that when the transmission mode configured by the cell is SIMO, one downlink subframe corresponds to one transmission block, the transmitted HARQ-ACK is 1 bit, and the HARQ-ACK transmitted by the serving cell is 1 bit; when the transmission mode configured by the cell is MIMO, one downlink subframe corresponds to two transmission blocks, the transmitted HARQ-ACK is 2 bits, and the transmitted HARQ-ACK of the serving cell is 2 bits.

For a serving cell with downlink reference uplink and downlink configured as TDD, the size of a binding window is assumed to be N, so that when a transmission mode configured by a cell is SIMO, one downlink subframe corresponds to one transmission block, the transmitted HARQ-ACK is 1 bit, and the number of bits of the HARQ-ACK of the serving cell is N; when the transmission mode configured by the cell is MIMO, one downlink subframe corresponds to two transmission blocks, the transmitted HARQ-ACK is 2 bits, and the number of bits of the HARQ-ACK of the serving cell is 2*N.

Next, the number of UCI bits may be calculated by integrating the number of HARQ-ACK feedback information bits, the number of CSI bits, and the number of SR bits for each serving cell.

The method comprises the following steps:

Alternatively, it is assumed that the HARQ-ACK transmitted on the PUCCH channel does not perform any bundling operation. The total number of HARQ-ACK bits of the UE in one subframe is equal to the sum of the numbers of bits of HARQ-ACKs of the uplink subframe of each cell configured by the UE, or the sum of the numbers of bits of HARQ-ACKs of the uplink subframe calculated by the UE according to the received PDCCH/EPDCCH condition. Then, the number of bits of UCI is equal to the sum of the total number of bits of HARQ-ACKs of the corresponding uplink subframe, the number of bits of periodic CSI of the corresponding uplink subframe transmission, and the number of bits of SRs of the corresponding uplink subframe transmission.

The second method is as follows:

Alternatively, in order to reduce feedback overhead as much as possible, it is assumed that HARQ-ACKs transmitted on PUCCH channels may perform spatial bundling operations. The total number of HARQ-ACK bits of the UE in one subframe is equal to the sum of the number of bits of the HARQ-ACK of each cell configured by the UE in the uplink subframe, or the UE calculates the sum of the number of bits of the HARQ-ACK in the uplink subframe according to the received PDCCH/EPDCCH condition. Then, the sum of the total number of bits of the HARQ-ACK of the corresponding uplink subframe, the number of bits of the periodic CSI transmitted by the corresponding uplink subframe, and the number of bits of the SR transmitted by the corresponding uplink subframe is calculated. If the sum result is less than or equal to M '(e.g., M' is equal to 22) bits, the number of bits of UCI is equal to the sum of the total number of bits of HARQ-ACKs of the corresponding uplink subframe calculated above, the number of bits of periodic CSI of the corresponding uplink subframe transmission, and the number of bits of SRs of the corresponding uplink subframe transmission. If the sum result is greater than the preset M' bit, the HARQ-ACK information needs to be spatially bound, so that the number of bits of UCI after the spatial binding is recalculated. That is, the total number of HARQ-ACK bits of the UE within one subframe is equal to the sum of the number of bits of HARQ-ACKs of each cell configured by the UE after spatial bundling of the uplink subframe. Then, the number of bits of UCI is equal to the sum of the total number of bits of HARQ-ACKs after spatial bundling of the corresponding uplink subframe, the number of bits of periodic CSI transmitted by the corresponding uplink subframe, and the number of bits of SR transmitted by the corresponding uplink subframe.

Example two

In order to transmit HARQ-ACK, the higher layer signaling configures a set of PUCCH format 3 resources and a set of PUCCH format X resources for the UE, and at the same time, the UE configures periodic CSI feedback in some subframes, the feedback CSI adopts PUCCH format 2/2A/2B or PUCCH format Y, the number of bits that PUCCH format Y can carry is L, and the higher layer signaling is utilized to semi-statically configure PUCCH format Y resources for the UE.

The manner of determining the PUCCH format and its transmission resources is different according to whether the periodic CSI transmission and the SR transmission are configured on subframe n, and is described below:

1. When the UE does not configure periodic CSI transmission in subframe n, the format of PUCCH transmitting HARQ-ACK in subframe n is determined according to the number of UCI bits consisting of the number of transmitted HARQ-ACK bits and/or the number of bits of SR. The specific mode is as follows:

1) In the subframe n, when the UE does not have the PUCCH format 3 resource or the PUCCH format X resource indicated by ARI, the UE adopts the PUCCH format 1A/1B to transmit UCI on the resource of the PUCCH format 1A/1B;

2) In subframe n, when the UE has a PUCCH format 3 resource or a PUCCH format X resource indicated by an ARI, if the number of bits of UCI is less than or equal to m (e.g. m=22) bits, transmitting UCI on the PUCCH format 3 resource using PUCCH format 3;

3) In subframe n, when the UE has a PUCCH format 3 resource or a PUCCH format X resource indicated by an ARI, if the number of bits of UCI is greater than m bits, transmitting UCI in a new PUCCH format X, where the new PUCCH format X refers to a PUCCH format different from PUCCH format 3.

2. When the UE configures periodic CSI transmission without SR transmission in subframe n, the format of PUCCH transmitting UCI in subframe n is determined according to the number of UCI bits consisting of the number of transmitted HARQ-ACK bits and/or the number of periodic CSI bits. In subframe n, when the UE does not have the PUCCH format 3 resource or the PUCCH format X resource indicated by the ARI, determining the PUCCH format for transmitting UCI and its corresponding transmission resource time division is divided into the following two cases:

1) In subframe n, for the case where the number of bits of UCI (i.e., the sum of the number of bits of periodic CSI and/or the number of HARQ-ACK bits) is less than or equal to m (e.g., m=22), the PUCCH format and its transmission resources may be determined in one of two ways:

a. In subframe n, when the number of bits of the periodic CSI is n '(e.g., n' =11) bits or less, transmitting UCI on the resources of PUCCH format 2/2A/2B using PUCCH format 2/2A/2B; when the bit number of the periodical CSI is larger than n' bits, transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

b. In subframe n, when only periodic CSI of one serving cell or only periodic CSI of one CSI process (process) of one serving cell is configured, transmitting UCI on PUCCH format 2/2A/2B resources using PUCCH format 2/2A/2B; transmitting UCI on a resource of PUCCH format 3 using PUCCH format 3 when configuring periodic CSI of more than one serving cell or configuring periodic CSI of one CSI process (process) of more than one serving cell;

2) In subframe n, for the case where the number of bits of UCI (i.e., the sum of the number of bits of the periodic CSI and/or the number of HARQ-ACK bits) is greater than m (e.g., m=22) bits, UCI is transmitted using a new PUCCH format Y, which herein refers to a PUCCH format different from PUCCH format 3 and PUCCH format 2/2A/2B, and the new PUCCH format Y, and PUCCH format 3 and PUCCH format 2/2A/2B are configured by higher layer signaling.

3. When the UE configures periodic CSI transmission and SR transmission in subframe n, a format of PUCCH transmitting UCI in subframe n is determined according to the number of HARQ-ACK bits transmitted and/or the number of periodic CSI bits and/or the number of UCI bits composed of the number of SR bits. In subframe n, when the UE does not have the PUCCH format 3 resource or the PUCCH format X resource indicated by the ARI, determining the PUCCH format for transmitting UCI and its corresponding transmission resource time division is divided into the following two cases:

1) In subframe n, for the case where the number of bits of UCI (i.e., the sum of the number of HARQ-ACK bits and/or the number of periodic CSI bits and/or the number of SR bits) is less than or equal to m (e.g., m=22), the PUCCH format and its transmission resources may be determined in one of the following two ways:

a. In subframe n, when the number of bits of the periodic CSI is less than or equal to n '(e.g., n' =11) bits, the periodic CSI is not transmitted, and HARQ-ACK and SR information are transmitted on the resources of PUCCH format 1A/1B using PUCCH format 1A/1B; when the bit number of the periodical CSI is larger than n' bits, transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

b. In a subframe n, when the sum of the bit number of the periodic CSI and the SR bit number is less than or equal to n' bits, UCI adopts PUCCH format 2/2A/2B to transmit UCI on the resources of PUCCH format 2/2A/2B; when the sum of the bit number of the periodic CSI and the bit number of the SR is larger than n' bits, transmitting UCI on the resource of the PUCCH format 3 by adopting the PUCCH format 3;

2) In subframe n, for the case where the number of bits of UCI (i.e., the sum of the number of bits of periodic CSI and/or SR and/or HARQ-ACK bits) is greater than m (e.g., m=22 bits), UCI is transmitted using a new PUCCH format Y, which herein refers to a PUCCH format different from PUCCH format 3 and PUCCH format 2/2A/2B, and the new PUCCH format Y, and PUCCH format 3 and PUCCH format 2/2A/2B are configured by higher layer signaling.

4. When the UE configures periodic CSI transmission and/or SR transmission in subframe n, the format of PUCCH transmitting UCI in subframe n is determined according to the number of HARQ-ACK bits transmitted and/or the number of periodic CSI bits and/or the number of UCI bits composed of the number of SR bits. Specifically, any one of the following two manners may be adopted to determine the PUCCH format and the resource for transmitting UCI:

1) In subframe n, when the UE has a PUCCH format 3 resource or a PUCCH format X resource indicated by an ARI, if the number of bits of UCI is less than or equal to m (e.g. m=22 bits), transmitting UCI on the PUCCH format 3 resource using PUCCH format 3; if the number of bits of the UCI is greater than m bits, transmitting the UCI in a new PUCCH format X, which refers to a PUCCH format different from PUCCH format 3;

2) In subframe n, when the UE has a PUCCH format 3 resource or a PUCCH format X resource indicated by an ARI, if the number of bits of UCI is less than or equal to n '(for example, n' =11) bits, transmitting UCI on a PUCCH format 2/2A/2B resource using PUCCH format 2/2A/2B; if the number of bits of UCI is greater than n' bits and less than or equal to m bits, transmitting UCI on PUCCH format 3 resources by using PUCCH format 3; if the number of bits of UCI is greater than m bits, UCI is transmitted using a new PUCCH format X, which refers to a PUCCH format different from PUCCH format 3.

If there is either PUCCH format 1A/1B for transmitting HARQ-ACK or PUCCH format 3 or PUCCH format X and there is a resource for PUCCH format Y for transmitting periodic CSI information on an uplink subframe where HARQ-ACK feedback information is required to be transmitted, only one type of information for transmitting UCI is selected from PUCCH format 3/PUCCH format X and PUCCH format Y in the manner of this embodiment, and, in order to improve resource utilization, PUCCH format Y and corresponding resource transmission UCI are preferably selected. Where "/" indicates or.

Specifically, on an uplink subframe configured with a resource of PUCCH format Y for transmitting periodic CSI information, if the number of bits of UCI required to be transmitted in the uplink subframe is less than or equal to L, the UE uses PUCCH format Y and transmits UCI on the configured corresponding PUCCH resource.

If the number of bits of UCI required to be transmitted in the uplink subframe is greater than L, selecting a PUCCH format capable of carrying more bits from PUCCH format 3/PUCCH format X for transmitting HARQ-ACK and PUCCH format Y for transmitting periodic CSI information, transmitting UCI using the selected PUCCH format and configured resources of the PUCCH format when the number of bits of UCI required to be transmitted in the uplink subframe is less than or equal to the maximum number of bits that can be carried in the selected PUCCH format,

When the number of bits of the UCI required to be transmitted in the uplink subframe is greater than the maximum number of bits that can be carried by the selected PUCCH format, all or a part of the periodic CSI may be discarded until the number of bits of the remaining UCI is less than the maximum number of bits that can be carried by the selected PUCCH format;

If the number of bits that PUCCH format 3/PUCCH format X and PUCCH format Y can carry is the same, UCI may be transmitted using the resources of PUCCH format Y for transmitting periodic CSI information and PUCCH format Y configured for the UE.

For the case that the number of bits of UCI is greater than L, when the number of bits of UCI to be transmitted in the uplink subframe is greater than the maximum number of bits that can be carried by PUCCH format 3/PUCCH format X, and the number of bits of UCI is also greater than L, all or a part of periodic CSI information may be discarded, so as to obtain updated UCI, and the updated UCI is transmitted using the selected PUCCH format and the resource.

By the method, UCI can be transmitted by preferentially utilizing the resources of the PUCCH format Y configured by the high-level signaling, so that the resources of the PUCCH format Y can be utilized as much as possible, because the resources are semi-statically allocated, the resources of the PUCCH format X or the PUCCH format 3 configured for HARQ-ACK can be dynamically indicated by ARI, and at the moment, the PUCCH format X or the PUCCH format 3 can be dynamically indicated to other UE for use, thereby improving the utilization rate of the resources.

The calculation of the number of bits of UCI in this embodiment may be performed by the calculation method in the first embodiment.

Example III

Several UCI transmission methods are described below. For each PUCCH format, the number of bits it carries is limited, specifically, by the maximum number of bits each PUCCH format can carry. In this embodiment, the number of UCI bits is compared with the maximum number of bits that can be carried by various PUCCH formats, and the PUCCH format for transmitting UCI is selected according to the comparison result or according to the number of PUCCHs supported by the UE.

The method comprises the following steps:

When the number of bits of UCI required to be transmitted in the uplink subframe is less than or equal to the maximum value of the maximum number of bits that can be carried in the PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and the PUCCH format 3/PUCCH format Y configured for transmitting CSI, the UE selects a PUCCH format that sufficiently carries UCI bits from the PUCCH format configured for transmitting HARQ-ACK and the PUCCH format configured for transmitting CSI, and selects a PUCCH format with the minimum maximum number of bits that can be carried from the selected PUCCH formats for transmitting UCI. The sufficient UCI-carrying bits means that the maximum number of bits that the PUCCH format can carry is greater than or equal to the number of bits of UCI.

When the number of bits of UCI required to be transmitted in the uplink subframe is greater than the maximum value of the maximum number of bits that can be carried in the PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and the PUCCH format 3/PUCCH format Y configured for transmitting CSI, the UE selects one PUCCH format having the maximum number of bits that can be carried from the PUCCH format configured for transmitting HARQ-ACK or the PUCCH format for transmitting CSI, the UE discards all periodic CSI information or discards a part of periodic CSI information until the number of bits of the remaining UCI is less than the maximum number of bits that can be carried in the PUCCH format selected above, and then selects a PUCCH format sufficient to carry the remaining UCI from among the PUCCH formats configured for transmitting HARQ-ACK and the PUCCH format used for transmitting CSI, and selects a PUCCH format having the minimum maximum number of bits that can be carried from the selected PUCCH formats to transmit the remaining UCI. And taking the UCI with the whole CSI information or part of the CSI information lost as the residual UCI, wherein the sufficient bearing of the residual UCI refers to that the maximum bit number which can be borne by the PUCCH format is greater than or equal to the bit number of the residual UCI.

The second method is as follows:

When the number of bits of UCI to be transmitted in the uplink subframe is greater than the maximum value of the maximum number of bits that can be carried in PUCCH format 3/PUCCH format X configured for transmission of HARQ-ACK and PUCCH format 3/PUCCH format Y configured for transmission of CSI, the processing is as follows:

1) If the UE supports simultaneous transmission of two PUCCHs and the system configures (e.g., higher layer signaling configuration) the UE to simultaneously transmit two PUCCHs, the UE transmits HARQ-ACK and SR information on one of the PUCCH resources and the UE transmits CSI information on the other PUCCH resource; when transmitting HARQ-ACK and SR information or transmitting CSI information on the PUCCH resource, the format selection of the PUCCH resource is the same as the prior mode;

2) If the UE supports transmission of one PUCCH and the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, and at the same time, the system configuration (e.g., higher layer signaling configuration) UE supports transmission of one PUCCH and the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, the UE transmits HARQ-ACK and periodic CSI on the supported PUCCH; when HARQ-ACK and CSI information are transmitted on the PUCCH, the format selection of the PUCCH resource is the same as that of the prior mode;

3) If the UE does not support simultaneous transmission of two PUCCHs, or if the UE supports simultaneous transmission of two PUCCHs, but the system is not configured (e.g., higher layer signaling is not configured), the UE simultaneously transmits two PUCCHs, or if the UE does not support transmission of one PUCCH and this PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI, or if the UE supports transmission of one PUCCH and this PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI but the system is not configured (e.g., higher layer signaling is not configured), the UE supports transmission of one PUCCH and this PUCCH simultaneously uses PUCCH resources of HARQ-ACK, and for the four cases described above, then selects a PUCCH format with the largest number of bits that can be carried by the one PUCCH format among PUCCH formats configured for transmission of HARQ-ACK and PUCCH formats for transmission of CSI, the UE drops all periodic CSI information until the number of bits of the remaining UCI is smaller than the largest number of bits that can be carried by the PUCCH formats selected above, and then the UE selects a maximum number of bits that can be carried by the PUCCH formats selected from among PUCCH formats configured for transmission of HARQ-ACK and PUCCH formats selected for transmission of the largest number of bits that can be carried by the remaining PUCCH formats.

And a third method:

If the UE supports simultaneous transmission of two PUCCHs and the system configuration (e.g., higher layer signaling configuration) UE simultaneously transmits two PUCCHs, the UE transmits HARQ-ACK and SR information on one of the PUCCH resources and the UE transmits CSI information on the other PUCCH resource as shown in fig. 4. When transmitting HARQ-ACK and SR information or CSI information on PUCCH resources, the format selection of PUCCH resources is the same as in the conventional manner.

If the UE supports transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI) and the system configuration (e.g., higher layer signaling configuration) UE supports transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), the UE transmits HARQ-ACK and periodic CSI on the PUCCH, as shown in fig. 5. When transmitting HARQ-ACK and CSI information on the PUCCH, the format selection of the PUCCH resource is the same as in the conventional manner.

If the UE does not support simultaneous transmission of two PUCCHs, or the UE supports simultaneous transmission of two PUCCHs at a higher layer but the system does not configure the UE to simultaneously transmit two PUCCHs, or if the UE does not support transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), or the UE supports transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI) but the system does not configure the UE to support transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), for the four cases described above, the UE selects one PUCCH format with the largest number of bits that can be carried among PUCCH formats configured for transmission of HARQ-ACK and PUCCH formats for transmission of CSI, the UE drops all periodic CSI information until the number of bits of the remaining UCI is smaller than the largest number of bits that can be carried by the PUCCH format selected above, and then selects sufficient remaining ones among PUCCH formats configured for transmission of HARQ-ACK and PUCCH formats for transmission of CSI, and the UE selects the largest number of remaining ones that can be carried by the PUCCH formats from PUCCH formats configured for transmission of the PUCCH formats selected with the largest number of bits.

The method four:

In the method, when determining the UCI transmission mode, the UCI transmission mode is carried out according to the power limited condition of the UE and the PUCCH condition supported by the UE. The specific treatment is as follows:

1) If the power of the UE is not limited, the UE supports simultaneous transmission of two PUCCHs, and the high-layer signaling configures the UE to simultaneously transmit the two PUCCHs, the UE transmits HARQ-ACK and SR information on one PUCCH resource and transmits CSI information on the other PUCCH resource; when transmitting HARQ-ACK and SR information or transmitting CSI information on the PUCCH resource, the format selection of the PUCCH resource is the same as the prior mode;

2) If the power of the UE is not limited and the UE supports transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI) and the higher layer signaling configures the UE to support transmission of one PUCCH (the PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), then the UE transmits HARQ-ACK and periodic CSI on the supported PUCCH; when HARQ-ACK and CSI information are transmitted on the PUCCH, the format selection of the PUCCH resource is the same as that of the prior mode;

3) If the UE is power-unrestricted and the UE does not support simultaneous transmission of two PUCCHs, or if the UE is power-unrestricted and the UE supports simultaneous transmission of two PUCCHs but the higher layer signaling does not configure the UE to simultaneously transmit two PUCCHs, or if the UE is power-unrestricted and the UE does not support transmission of one PUCCH (this PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), or the UE is power-unrestricted and the UE supports transmission of one PUCCH (this PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI) but the higher layer signaling does not configure the UE to support transmission of one PUCCH (this PUCCH simultaneously uses PUCCH resources of HARQ-ACK and PUCCH resources of periodic CSI), or if the UE is power-restricted, then in the above five cases, the UE selects one PUCCH format with the largest number of bits that can be carried in the PUCCH formats configured to transmit HARQ-ACK and PUCCH formats used to transmit CSI, or the number of bits of the remaining UCI is smaller than the largest number of bits that can be carried in the PUCCH formats configured to transmit HARQ-ACK and the remaining ones of PUCCH formats configured to be carried in the largest number of the PUCCH formats selected to be carried by the PUCCH.

Example IV

The method of this embodiment is applicable to an enhanced carrier aggregation system, that is, a system in which the number of downlink carriers configured by the UE is more than 5 and less than 32, or more than 2 TDD uplink and downlink configurations 5, or other downlink carrier combination conditions defined by the enhanced carrier aggregation system.

The UE is used to transmit one periodic CSI is PUCCH resources of PUCCH format 2/2a/2 b. There may be at most two PUCCH resources or one PUCCH resource for transmitting multiple periodic CSI. If the PUCCH resources for transmitting the multiple periodic CSI are two PUCCH resources, the formats of the two PUCCH resources may be both new PUCCH formats (where the new PUCCH format includes two types of formats, one type of format is a new PUCCH based on a PUSCH structure, and the other type of format is a new PUCCH based on a PUSCH structure and subjected to code division multiplexing, and the new structure refers to one type of the two types of formats, it is not particularly distinguished), and the number of PRBs occupied by them may be different; or one is a PUCCH resource of a new PUCCH format and one is a PUCCH resource of PUCCH format 3. If the PUCCH resource transmitting the multiple periodic CSI is one, it may be a PUCCH of a new PUCCH format or a PUCCH resource of PUCCH format 3.

When the UE configures periodic CSI transmission in subframe n and simultaneously transmits HARQ-ACK bits and/or SR bits in subframe n, that is, the UE transmits HARQ-ACK bits and/or SR bits while transmitting periodic CSI in subframe n, there are several methods for selecting the format and resources of PUCCH.

Case one:

The HARQ-ACK/SR transmission of the subframe n by the UE is only the resource of the PUCCH format 1/1a/1b, and the resource of the PUCCH format 3 without ARI indication or the resource of the new PUCCH format X.

The method comprises the following steps:

When the UE configures one or more periodic CSI in subframe n, the periodic CSI and HARQ-ACK/SR are transmitted using PUCCH resources configured to the UE for transmitting the plurality of periodic CSI, wherein "/" means "and/or". If there are 2 PUCCH resources configured for the UE to transmit multiple periodic CSI, selecting one PUCCH resource according to the periodic CSI and the UCI total bit number composed of HARQ-ACK/SR. The principle of selection is that when the maximum transmission bit number of two PUCCH resources is larger than the total bit number of UCI, a resource with small maximum transmission bit number of PUCCH resources is selected to transmit UCI, otherwise, a PUCCH resource with large maximum transmission bit number of PUCCH resources is selected to transmit UCI, if the maximum transmission bit number of the selected PUCCH resources is smaller than the transmission UCI bit number, the UE discards all periodic CSI information or discards part of periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum transmission bit number which can be carried by the selected PUCCH format, and the UCI subjected to period CSI discarding is transmitted by the PUCCH resource. If only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum bit number which can be borne by the PUCCH resource is smaller than the transmitted UCI bit number, the UE discards all periodic CSI information or discards a part of periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number which can be borne by the PUCCH format, and the UCI after the periodic CSI is discarded is transmitted by the resource; if only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum number of bits which can be carried by the PUCCH resource is greater than or equal to the number of UCI bits transmitted, UCI is transmitted by using the resource.

The second method is as follows:

When the UE configures CSI of one period in subframe n and needs to transmit HARQ-ACK for scheduling only PDSCH and/or SPS downlink transmission with DAI equal to 1 in the Pcell in subframe n, subframe n does not configure SR transmission, the periodic CSI and HARQ-ACK are transmitted using PUCCH format 2a/2b resources configured for the UE to transmit CSI of one period. When the UE configures a periodic CSI in a subframe n, and does not have a PUCCH format 3 resource indicated by ARI or a new PUCCH format resource X, and the subframe n configures SR transmission, the UE adopts a PUCCH format 1/1a/1b resource to transmit HARQ-ACK/SR, and does not transmit periodic CSI.

When the UE configures CSI of a plurality of periods in subframe n, the periodic CSI and HARQ-ACK/SR are transmitted using PUCCH resources configured to the UE for transmitting the plurality of periodic CSI. If there are 2 PUCCH resources configured for the UE to transmit multiple periodic CSI, selecting one PUCCH resource according to the periodic CSI and the UCI total bit number composed of HARQ-ACK/SR. The principle of selection is that when the maximum transmission bit number of two PUCCH resources is larger than the total bit number of UCI, a resource with small maximum transmission bit number of PUCCH resources is selected to transmit UCI, otherwise, a PUCCH resource with large maximum transmission bit number of PUCCH resources is selected to transmit UCI, if the maximum bit number which can be carried by the selected PUCCH resources is smaller than the transmitted UCI bit number, the UE discards all periodic CSI information or discards part of periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number which can be carried by the selected PUCCH format, and the UCI subjected to periodic CSI discarding is transmitted by the resource. If only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum number of bits which can be carried by the PUCCH resource is smaller than the number of bits of the transmitted UCI, the UE discards all periodic CSI information or discards a part of periodic CSI information until the number of bits of the rest UCI is smaller than or equal to the maximum number of bits which can be carried by the PUCCH format, and the UCI after the periodic CSI is discarded is transmitted by the resource. If only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum number of bits which can be carried by the PUCCH resource is more than or equal to the number of UCI bits transmitted, UCI is transmitted by the resource.

And a second case:

The UE has PUCCH format 3 resources for HARQ-ACK/SR transmission or resources of a new PUCCH format X indicated by ARI in subframe n.

The method comprises the following steps:

If the UE configures only one periodic CSI transmission in the subframe n, the UE transmits the HARQ-ACK/SR and the periodic CSI by using a PUCCH format 3 resource for HARQ-ACK/SR transmission indicated by ARI or a resource X of a new PUCCH format. When the UCI bits of all serving cells transmitted in subframe n are less than or equal to a positive integer M (M is configured by higher layer signaling or preset by a protocol, e.g., M is equal to 22) bits, UCI bits are transmitted using PUCCH format 3, and the ARI in the (e) PDCCH of the scheduled PDSCH indicates a corresponding one of the resources of a set of PUCCH format 3 configured for the UE using higher layer signaling. When the UCI bits of all serving cells of one uplink subframe transmission are greater than M (M is configured by higher layer signaling or preset by a protocol, e.g., M is equal to 22) bits, UCI bits are transmitted using PUCCH format X, and the ARI indication in (e) PDCCH of the scheduled PDSCH is a corresponding one of the resources of a set of PUCCH format X configured for the UE using higher layer signaling. When the maximum transmission bit number of the PUCCH resource indicated by the ARI is larger than the total UCI bit number, transmitting UCI by using the ARI; otherwise, the UE discards all the periodic CSI information or discards a part of the periodic CSI information until the bit number of the rest UCI is less than or equal to the maximum bit number which can be borne by the PUCCH resource indicated by ARI, and the UCI after the periodic CSI is discarded is transmitted by the resource.

If the UE configures a plurality of periodic CSI transmissions in subframe n, one PUCCH resource transmission UCI is selected from PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and one or two PUCCH resources different from PUCCH format 2 configured for transmitting a plurality of periodic CSI to the UE according to the total UCI bit number. The specific selection method is that when the number of bits of UCI required to be transmitted in subframe n is less than or equal to the maximum value of the maximum number of bits that can be carried in PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and PUCCH resources configured for UE to transmit multiple periodic CSI or two different PUCCH formats 2, the UE selects PUCCH resources of PUCCH format with sufficient number of bits for carrying UCI from PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and one or two new PUCCH resources configured for UE to transmit multiple periodic CSI, and selects PUCCH resources of PUCCH format with minimum maximum number of bits that can be carried from PUCCH resources of selected PUCCH format for transmitting UCI. If there are two PUCCH resources of the selected PUCCH format, one is a new PUCCH resource configured to transmit a plurality of periodic CSI, one is a PUCCH resource for harq ack/SR indicated by ARI, one method is to use the ARI-indicated resource, and the other method is to use the PUCCH resource transmitting a plurality of periodic CSI. When the number of bits of UCI required to be transmitted in subframe n is greater than the maximum value of the maximum number of bits that can be carried out of PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and PUCCH resources configured to UE for transmitting multiple periodic CSI different from PUCCH format 2, the UE selects PUCCH resources of PUCCH format capable of carrying the maximum value of the maximum number of bits of UCI from among PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and PUCCH resources configured to UE for transmitting multiple periodic CSI different from PUCCH format 2. If the maximum number of bits that can be carried by the selected PUCCH resource is less than the number of UCI bits transmitted, the UE discards all of the periodic CSI information or discards a portion of the periodic CSI information until the number of bits of the remaining UCI is less than or equal to the maximum number of bits that can be carried by the selected PUCCH format, and transmits UCI with the discarded periodic CSI using this resource. If there are two PUCCH resources of the selected PUCCH format, one is a PUCCH resource configured to transmit a plurality of periodic CSI, and one is a PUCCH resource for HARQ-ACK/SR indicated by ARI, one method is to use the resource indicated by ARI, and the other method is to use the PUCCH resource transmitting a plurality of periodic CSI.

The second method is as follows:

If the UE configures one or more periodic CSI transmissions in subframe n, one PUCCH resource transmission UCI is selected from PUCCH format 3/PUCCH format X configured for transmission of HARQ-ACK and one or two PUCCH resources different from PUCCH format 2 configured for transmission of multiple periodic CSI to the UE according to the total UCI bit number. The specific selection method is that when the number of bits of UCI required to be transmitted in subframe n is less than or equal to the maximum value of the maximum number of bits that can be carried in PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and PUCCH resources configured for UE to transmit multiple periodic CSI or two different PUCCH formats 2, the UE selects PUCCH resources of PUCCH format with sufficient number of bits for carrying UCI from PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and one or two new PUCCH resources configured for UE to transmit multiple periodic CSI, and selects PUCCH resources of PUCCH format with minimum maximum number of bits that can be carried from PUCCH resources of selected PUCCH format for transmitting UCI. If there are two PUCCH resources of the selected PUCCH format, one is a new PUCCH resource configured to transmit a plurality of periodic CSI, one is a PUCCH resource for harq ack/SR indicated by ARI, one method is to use the ARI-indicated resource, and the other method is to use the PUCCH resource transmitting a plurality of periodic CSI. When the number of bits of UCI required to be transmitted in subframe n is greater than the maximum value of the maximum number of bits that can be carried out of PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and PUCCH resources configured to UE for transmitting multiple periodic CSI different from PUCCH format 2, the UE selects PUCCH resources of PUCCH format capable of carrying the maximum value of the maximum number of bits of UCI from among PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and PUCCH resources configured to UE for transmitting multiple periodic CSI different from PUCCH format 2. If the maximum number of bits that can be carried by the selected PUCCH resource is less than the number of UCI bits transmitted, the UE discards all of the periodic CSI information or discards a portion of the periodic CSI information until the number of bits of the remaining UCI is less than or equal to the maximum number of bits that can be carried by the selected PUCCH format, and transmits UCI with the discarded periodic CSI using this resource. If there are two PUCCH resources of the selected PUCCH format, one is a PUCCH resource configured to transmit a plurality of periodic CSI, and one is a PUCCH resource for HARQ-ACK/SR indicated by ARI, one method is to use the resource indicated by ARI, and the other method is to use the PUCCH resource transmitting a plurality of periodic CSI.

And a third method:

If the UE configures one or more periodic CSI transmissions in subframe n, the UE transmits the HARQ-ACK/SR and the periodic CSI using the PUCCH format 3 resource for HARQ-ACK/SR transmission indicated by ARI or the resource X of the new PUCCH format. When the UCI bits of all serving cells transmitted in subframe n are less than or equal to a positive integer M (M is configured by higher layer signaling or preset by a protocol, e.g., M is equal to 22) bits, UCI bits are transmitted using PUCCH format 3, and the ARI in the (e) PDCCH of the scheduled PDSCH indicates a corresponding one of the resources of a set of PUCCH format 3 configured for the UE using higher layer signaling. When the UCI bits of all serving cells of one uplink subframe transmission are greater than M (M is configured by higher layer signaling or preset by a protocol, e.g., M is equal to 22) bits, UCI bits are transmitted using PUCCH format X, and the ARI indication in (e) PDCCH of the scheduled PDSCH is a corresponding one of the resources of a set of PUCCH format X configured for the UE using higher layer signaling. When the maximum transmission bit number of the PUCCH resource indicated by the ARI is larger than the total UCI bit number, transmitting UCI by using the ARI; otherwise, the UE discards all the periodic CSI information or discards a part of the periodic CSI information until the bit number of the rest UCI is less than or equal to the maximum bit number which can be carried by the selected PUCCH format, and the UCI subjected to periodic CSI discarding is transmitted by using the resource.

The method four:

When the UE configures one or more periodic CSI transmissions in subframe n, the specific manner of determining the format of PUCCH transmitting UCI and the resources of transmitting PUCCH includes: selecting PUCCH resources for periodic CSI transmission according to the number of bits transmitted by the periodic CSI, and selecting the number of bits transmitted by the periodic CSI; taking the sum of the bit number of the transmitted periodical CSI and the total bit number of the HARQ-ACK/SR as the bit number of UCI; and selecting one PUCCH resource from the PUCCH format 3 resource or the PUCCH format X resource for HARQ-ACK/SR transmission indicated by ARI and the PUCCH resource for periodical CSI transmission according to the bit number of UCI, and transmitting the UCI.

Specifically, if the UE configures one or more periodic CSI transmissions in subframe n. First, PUCCH resources for periodic CSI transmission are selected according to the number of bits of the periodic CSI transmission, and the number of bits of the transmitted periodic CSI is selected. If there are 2 PUCCH resources configured for the UE to transmit a plurality of periodic CSI, one PUCCH resource is selected according to the total bit number of the periodic CSI. The principle of selection is that when the maximum transmission bit number of two PUCCH resources is larger than the total bit number of the periodical CSI, PUCCH resources with small maximum transmission bit number of the PUCCH resources are selected, and the transmission periodical CSI bit number is the bit number of all periodical CSI; otherwise, selecting one PUCCH resource with large maximum transmission bit number, if the maximum bit number which can be borne by the selected PUCCH resource is smaller than the transmitted UCI bit number, discarding all periodic CSI information by the UE or discarding a part of the periodic CSI information until the bit number of the rest UCI is smaller than or equal to the maximum bit number which can be borne by the selected PUCCH format, wherein the transmitted periodic CSI bit number is the bit number of the discarded periodic CSI. If only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum number of bits which can be borne by the PUCCH resource is smaller than the number of bits of the transmitted UCI, the UE discards all periodic CSI information or discards a part of periodic CSI information until the number of bits of the rest UCI is smaller than or equal to the maximum number of bits which can be borne by the PUCCH format, and the number of bits of the transmitted periodic CSI is the number of bits of the discarded periodic CSI. If only one PUCCH resource is configured for the UE to transmit a plurality of periodic CSI, if the maximum number of bits which can be borne by the PUCCH resource is greater than or equal to the number of UCI bits transmitted, the periodic CSI is transmitted by using the resource, and the number of bits of the transmitted periodic CSI is the number of bits of all the periodic CSI. Then, the transmission cycle CSI bit number and the total bit number of HARQ-ACK/SR determined above are taken as the UCI bit number, which is the UCI bit number used below. And then selecting one PUCCH resource from the PUCCH format 3 resource for HARQ-ACK/SR transmission or the resource X of the new PUCCH format in the ARI indication and the PUCCH resource of the transmission period CSI selected above according to the bit number of the UCI for transmitting the bit number of the UCI. The specific selection method is that when the number of bits of UCI required to be transmitted in subframe n is less than or equal to the maximum value of the maximum number of bits that can be carried in PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and the above-selected PUCCH resource of periodic CSI, the UE selects PUCCH resources of PUCCH format sufficient to carry UCI bits from PUCCH format 3/PUCCH format X configured for transmitting HARQ-ACK and the above-selected PUCCH resource of periodic CSI, and selects PUCCH resources of PUCCH format having the minimum maximum number of bits that can be carried from PUCCH resources of the selected PUCCH format for transmitting UCI. If there are two PUCCH resources of the selected PUCCH format, one is the PUCCH resource of the above selected periodic CSI, and one is the PUCCH resource for HARQACK/SR indicated by ARI, one method is to use the resource indicated by ARI, and the other method is to use the PUCCH resource of the above selected periodic CSI. When the number of bits of UCI required to be transmitted in subframe n is greater than the maximum value of the maximum number of bits that can be carried out of PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and the above-selected periodic CSI, the UE selects a PUCCH resource of PUCCH format capable of carrying the maximum value of the maximum number of bits of UCI from among PUCCH format 3/PUCCH format X configured to transmit HARQ-ACK and the above-selected periodic CSI. If the maximum number of bits that can be carried by the selected PUCCH resource is less than the number of UCI bits transmitted, the UE discards all of the periodic CSI information or discards a portion of the periodic CSI information until the number of bits of the remaining UCI is less than or equal to the maximum number of bits that can be carried by the selected PUCCH format, and transmits UCI with the discarded periodic CSI using this resource. If there are two PUCCH resources of the selected PUCCH format, one is the PUCCH resource of the above selected periodic CSI, and one is the PUCCH resource for HARQ-ACK/SR indicated by ARI, one method is to use the resource indicated by ARI, and the other method is to use the PUCCH resource of the above selected periodic CSI.

The method is a specific implementation of the HARQ-ACK transmission method. The application also provides HARQ-ACK transmission equipment which can be used for implementing the method. Fig. 6 is a schematic diagram of a basic structure of an HARQ-ACK transmission device according to the present application. As shown in fig. 6, the apparatus includes: a bit number determining unit, a resource determining unit and a transmitting unit.

The bit number determining unit is used for determining the bit number of the HARQ-ACK feedback information which needs to be sent by the UE in one uplink subframe; and the method is also used for determining the bit number of uplink control information UCI transmitted in the uplink subframe according to the bit number of the HARQ-ACK feedback information transmitted in the uplink subframe, the CSI bit number and the SR bit number.

A resource determining unit, configured to determine a format of a PUCCH transmitting UCI and a resource for transmitting the PUCCH according to the number of bits of the UCI determined by the number of bits determining unit.

The transmission unit is configured to transmit UCI according to the PUCCH format and the resource determined by the resource determining unit.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.

Claims

1. A method performed by a user equipment, UE, in a wireless communication system, comprising:

Determining a resource of a physical uplink control channel, PUCCH, format according to a sum of bit numbers of uplink control information, UCI, and

Transmitting the UCI on the resources of the determined PUCCH format,

Wherein, in case the UE is not configured with a PUCCH format for HARQ-ACK/SR transmission, the UCI is transmitted through a resource of the PUCCH format for transmitting periodic channel state information CSI.

2. The method of claim 1, wherein the step of determining the position of the substrate comprises,

When the sum of the number of bits of the UCI is greater than 22, transmitting the UCI using a first PUCCH format and PUCCH resources in a resource set of the first PUCCH format determined according to higher layer configuration and information for determining PUCCH resources in a physical downlink control channel PDCCH;

When the sum of the number of bits of the UCI is less than or equal to 22, the UCI is transmitted using a second PUCCH format and PUCCH resources in a resource set of the second PUCCH format determined according to a higher layer configuration and information for determining PUCCH resources in the PDCCH.

3. The method of claim 2, wherein the information in the PDCCH for determining PUCCH resources comprises a value of a transmit power control, TPC, domain.

4. The method of claim 1, wherein the step of determining the position of the substrate comprises,

When resources of PUCCH formats configured to a UE for transmitting a plurality of periodic CSI are two, transmitting the UCI using one of the resources of the two PUCCH formats determined according to a sum of the number of bits of the UCI, comprising: if the maximum transmission bit number of the two PUCCH format resources is larger than the sum of the bit numbers of the UCI, transmitting the UCI by using a third PUCCH format resource with smaller maximum transmission bit number among the two PUCCH format resources; otherwise, transmitting the UCI using a resource of a fourth PUCCH format having a larger maximum transmission bit number among the resources of the two PUCCH formats; and

When the resource configured to the UE for transmitting the PUCCH format of the plurality of periodic CSI is one, the method further includes: and if the maximum transmission bit number of the resources of the one PUCCH format is less than the sum of the bit numbers of the UCI, the UE discards part of the periodic CSI information until the sum of the bit numbers of the residual UCI is less than or equal to the maximum transmission bit number of the resources of the one PUCCH format, and transmits the residual UCI by using the resources of the one PUCCH format, and if the maximum transmission bit number of the resources of the one PUCCH format is greater than or equal to the sum of the bit numbers of the UCI, transmitting the UCI by using the resources of the one PUCCH format.

5. The method of claim 4, wherein transmitting the UCI using resources of a fourth PUCCH format comprises:

When the maximum transmission bit number of the resources of the fourth PUCCH format is less than the sum of the bit numbers of the UCI, the UE discards part of the periodic CSI information until the sum of the bit numbers of the remaining UCI is less than or equal to the maximum transmission bit number of the resources of the fourth PUCCH format, and transmits the remaining UCI using the resources of the fourth PUCCH format.

6. The method of any of claims 1-5, wherein the UCI comprises one or more periodic CSI bits and HARQ-ACK and/or SR bits.

7. A user equipment in a wireless communication system, comprising:

a bit number determining unit for determining a sum of bit numbers of uplink control information UCI;

A resource determining unit, configured to determine a resource of a physical uplink control channel PUCCH format according to a sum of bit numbers of the UCI;

a transmission unit for transmitting the UCI on the determined resource of the PUCCH format,

Wherein, in case the user equipment is not configured with a PUCCH format for HARQ-ACK/SR transmission, the UCI is transmitted through a resource of the PUCCH format for transmitting periodic channel state information CSI.

8. The user equipment of claim 7, wherein when a sum of bit numbers of the UCI is greater than 22, the UCI is transmitted using a first PUCCH format and PUCCH resources in a resource set of the first PUCCH format determined according to higher layer configuration and information for determining PUCCH resources in a physical downlink control channel PDCCH;

9. The user equipment of claim 8, wherein the information in the PDCCH for determining PUCCH resources comprises a value of a transmit power control, TPC, domain.

10. The user equipment of claim 7, wherein the user equipment is configured to,

When resources of PUCCH formats configured to the user equipment for transmitting a plurality of periodic CSI are two, transmitting the UCI using one of the resources of the two PUCCH formats determined according to a sum of the number of bits of the UCI, comprising: if the maximum transmission bit number of the two PUCCH format resources is larger than the sum of the bit numbers of the UCI, transmitting the UCI by using a third PUCCH format resource with smaller maximum transmission bit number among the two PUCCH format resources; otherwise, transmitting the UCI using a resource of a fourth PUCCH format having a larger maximum transmission bit number among the resources of the two PUCCH formats; and

When the resource of the PUCCH format configured for transmitting the plurality of periodic CSI is one, if the maximum transmission bit number of the resource of the one PUCCH format is less than the sum of the bit numbers of the UCI, the user equipment discards part of the periodic CSI information until the sum of the bit numbers of the remaining UCI is less than or equal to the maximum transmission bit number of the resource of the one PUCCH format, and transmits the remaining UCI using the resource of the one PUCCH format, and if the maximum transmission bit number of the resource of the one PUCCH format is greater than or equal to the sum of the bit numbers of the UCI, transmits the UCI using the resource of the one PUCCH format.

11. The user equipment of claim 10, wherein transmitting the UCI using resources of a fourth PUCCH format comprises:

When the maximum transmission bit number of the resources of the fourth PUCCH format is less than the sum of the bit numbers of the UCI, discarding part of the periodic CSI information until the sum of the bit numbers of the remaining UCI is less than or equal to the maximum transmission bit number of the resources of the fourth PUCCH format, and transmitting the remaining UCI using the resources of the fourth PUCCH format.

12. The user equipment of any of claims 7-11, wherein the UCI comprises one or more periodic CSI bits and HARQ-ACK and/or SR bits.

13. A method performed by a base station in a wireless communication system, comprising:

Uplink control information UCI is received from a user equipment UE on resources of a physical uplink control channel PUCCH format,

Wherein the resources of the PUCCH format are determined according to the sum of the number of bits of the UCI,

Wherein, in case the UE is not configured with a PUCCH format for HARQ-ACK/SR transmission, the UCI is received through a resource of the PUCCH format for transmitting periodic channel state information CSI.

14. The method of claim 13, wherein the step of determining the position of the probe is performed,

When the sum of the number of bits of the UCI is greater than 22, the PUCCH format is a first PUCCH format, and the UCI is transmitted using PUCCH resources in a resource set of the first PUCCH format determined according to a higher layer configuration and information for determining PUCCH resources in a physical downlink control channel PDCCH;

when the sum of the number of bits of the UCI is less than or equal to 22, the PUCCH format is a second PUCCH format, and the UCI is transmitted using PUCCH resources in a resource set of the second PUCCH format determined according to a higher layer configuration and information for determining PUCCH resources in the PDCCH.

15. The method of claim 14, wherein the information in the PDCCH for determining PUCCH resources comprises a value of a transmit power control, TPC, domain.

16. The method of claim 13, wherein the step of determining the position of the probe is performed,

When resources of PUCCH formats configured to a UE for transmitting a plurality of periodic CSI are two, the UCI is transmitted using one of the resources of the two PUCCH formats determined according to a sum of bit numbers of the UCI, comprising: if the maximum transmission bit number of the resources of the two PUCCH formats is greater than the sum of the bit numbers of the UCI, the UCI is transmitted by using the resource of the third PUCCH format with smaller maximum transmission bit number among the resources of the two PUCCH formats; otherwise, the UCI is transmitted using a resource of a fourth PUCCH format having a larger maximum transmission bit number among the resources of the two PUCCH formats; and

When the resource configured to the UE for transmitting the PUCCH format of the plurality of periodic CSI is one, the method further includes: if the maximum transmission bit number of the resources of the one PUCCH format is less than the sum of the bit numbers of the UCI, the partial periodic CSI information is discarded until the sum of the bit numbers of the remaining UCI is less than or equal to the maximum transmission bit number of the resources of the one PUCCH format, and the resources of the one PUCCH format are used to transmit the remaining UCI, and if the maximum transmission bit number of the resources of the one PUCCH format is greater than or equal to the sum of the bit numbers of the UCI, the resources of the one PUCCH format are used to transmit the UCI.

17. The method of claim 16, wherein the UCI is transmitted using resources of a fourth PUCCH format,

Wherein when the maximum number of transmission bits of the resource of the fourth PUCCH format is less than the sum of the number of bits of the UCI, the partial periodic CSI information is discarded until the sum of the number of bits of the remaining UCI is less than or equal to the maximum number of transmission bits of the resource of the fourth PUCCH format, and the resource of the fourth PUCCH format is used to transmit the remaining UCI.

18. The method of any of claims 13-16, wherein the UCI includes one or more periodic CSI bits and HARQ-ACK and/or SR bits.

19. A base station in a wireless communication system, the base station being configured to perform the method of any of claims 13-16.