CN106067845A

CN106067845A - The method of multiplexing uplink information

Info

Publication number: CN106067845A
Application number: CN201510612583.8A
Authority: CN
Inventors: 李迎阳; 孙程君
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2015-04-09
Filing date: 2015-09-23
Publication date: 2016-11-02

Abstract

The method that this application discloses one multiplexing ascending control information (UCI) on the uplink channel, first, UCI is classified by UE, and the UCI of difference classification is encoded respectively, rate-matched and modulation, then, UE maps the UCI of different classification the most respectively.Disclosed herein as well is a kind of P CSI of multiplexing on the uplink channel and the method and apparatus of number of modulation symbols that the method and apparatus of A CSI, a kind of UCI of determination take and a kind of method and apparatus determining the ascending physical signal Resource Block for uplink.The invention provides a kind of general physical resource mapping method to process multiple uplink information, ensure that the reliability requirement of different UCI information, optimization is fed back P CSI together with A CSI thus is reduced feedback overhead, and the uplink channel resources that base station is distributed can be made full use of, improve ascending resource utilization rate.

Description

Method for multiplexing uplink information

Technical Field

The invention relates to a wireless communication system, in particular to a method for multiplexing multiple types of uplink information on an uplink channel by an LTE (Long term evolution) carrier aggregation system.

Background

In a Long Term Evolution (LTE) system, downlink data is transmitted based on a hybrid automatic repeat request (HARQ) technology, and accordingly, after receiving data from a base station, a User Equipment (UE) needs to feed back HARQ-ACK information accordingly, that is, feedback ACK indicates successful reception of one Transport Block (TB), and feedback NACK indicates failed reception of the TB. The HARQ-ACK information of the UE may also be Discontinuous Transmission (DTX), that is, the UE does not receive downlink scheduling signaling (DL grant) of the base station, which may be that the base station does not schedule resources of the UE, or that the base station schedules resources of the UE, but the UE does not receive the DL grant of the base station. In order to reduce feedback overhead, generally, when the UE feeds back HARQ-ACK information, NACK and DTX may not be distinguished, and thus a reception state of one TB may be indicated with 1 bit. For a cell of an FDD system, only HARQ-ACK information of data in a downlink subframe needs to be fed back in an uplink subframe; for a cell of a TDD system, when downlink subframe data in a frame structure of the cell is more than uplink subframes, HARQ-ACK information of data in a plurality of downlink subframes generally needs to be fed back in one uplink subframe, and the plurality of downlink subframes are referred to as a bundling window corresponding to the uplink subframe. For example, the bundling window size of an LTE TDD cell may be 1,2, 3, 4, or 9.

In an enhanced system of the LTE system, a larger operating bandwidth is obtained by combining a plurality of Component Carriers (CCs), which constitute a downlink and an uplink of a communication system, i.e., a Carrier Aggregation (CA) technique, thereby supporting a higher transmission rate. Up to now, various types of CA have been supported, namely: the cells to be aggregated may all be FDD cells, or may all be TDD cells, and the TDD uplink and downlink configurations of the TDD cells are the same, or may all be TDD cells, but the TDD uplink and downlink configurations of the TDD cells are different, and in addition, aggregation of the FDD cell and the TDD cell is also supported, and the uplink and downlink configurations of the TDD cell may be semi-statically configured or dynamically changed.

For one UE, when the CA mode is configured, one cell is a primary cell (Pcell), and the other cells are called secondary cells (scells). According to the LTE method, downlink data are transmitted to the Pcell and the Scell based on an HARQ mechanism, and correspondingly, the UE needs to feed back HARQ-ACK information of a plurality of cells. That is, the amount of HARQ-ACK information that needs to be fed back is multiplied relative to the single cell case. According to the LTE method, HARQ-ACK information of all configured cells is fed back on one PUCCH channel of the Pcell. According to the LTE method, for a configured cell, the number of HARQ-ACK bits needing to be fed back is determined according to the size of a binding window and a configured transmission mode of the cell, and the total number of the HARQ-ACK bits needing to be fed back is obtained according to the number of the HARQ-ACK bits of all the configured cells. The reason for this approach is that the cell configured based on RRC signaling is relatively reliable for the base station and the UE.

According to the LTE approach, currently a Physical Uplink Control Channel (PUCCH) format 3 is supported, the basic idea being to jointly encode and map multiple HARQ-ACK bits, e.g. from multiple configured cells, to a physical channel transmission. PUCCH format 3 can support transmission of 22 bits at most. According to the method of LTE, when Uplink Control Information (UCI) needs to be fed back on a Physical Uplink Shared Channel (PUSCH), different processing methods are adopted for different types of UCI. As shown in fig. 1, a diagram of multiplexing HARQ-ACK, Rank Indication (RI), and Channel Quality Indication (CQI)/Precoding Matrix Indication (PMI) on PUSCH. Wherein: after coding and rate matching, the CQI/PMI information is mapped by a time-first method, which is the same as the mapping method of the uplink data. The HARQ-ACK information is mapped to 4 symbols beside the DMRS for transmission, and the frequency direction mapping opposite to the CQI/PMI is adopted, so that when the number of Resource Elements (REs) occupied by the HARQ-ACK information is large, the HARQ-ACK information can cover the REs occupied by the CQI/PMI, and the HARQ-ACK information with higher importance is protected. Similar to the HARQ-ACK information, the RI information is mapped to a symbol next to the HARQ-ACK information, and is also mapped in a frequency direction opposite to the CQI/PMI, so that when the number of REs that the RI information needs to occupy is large, the RI information can cover the REs occupied by the CQI/PMI, thereby protecting the RI information with higher importance.

Currently, the 3GPP standardization organization is standardizing the enhanced CA technology for aggregating more cells, for example, the number of aggregated cells can reach 32. In this case, for one UE, all configured cells may be divided into a plurality of groups, or only one group may be provided; and feeding back HARQ-ACK information on PUCCH of a cell for each group, wherein the cell feeding back the HARQ-ACK information is similar to Pcell in the prior CA technology. Here, the number of cells per group may still exceed the maximum number of aggregated cells supported by the existing CA technology. Since the number of cells requiring feedback of HARQ-ACK information on the PUCCH of one cell increases, the total number of HARQ-ACK bits requiring feedback on the PUCCH increases, for example, more than 22 bits, without affecting the downlink data transmission performance too much. In fact, UCI information transmitted in the uplink direction by the UE may further include a Scheduling Request (SR) and a Channel State Indication (CSI), and the CSI is further divided into periodic CSI (P-CSI) and aperiodic CSI (a-CSI). Accordingly, in order to support UCI transmission of more than 22 bits, a new PUCCH format needs to be defined. This format may be completely new or may be obtained based on the existing PUCCH format 3, PUSCH or other channel structure, and is hereinafter collectively referred to as PUCCH format X. Since the PUCCH format X is introduced, a series of influences are necessarily brought, and accordingly, a specific transmission method for UCI needs to be designed.

Disclosure of Invention

The present application aims to provide a method and a device for multiplexing multiple types of uplink information on an uplink channel, so as to ensure transmission reliability and improve uplink resource utilization rate.

The application provides a method for multiplexing uplink control information on an uplink channel, which comprises the following steps:

user Equipment (UE) classifies Uplink Control Information (UCI), and codes, rate matches and modulates the UCI of different classifications;

the UE maps UCI of different classes on the uplink channel, respectively.

Preferably, the UE separately encoding UCI of different classes includes:

performing joint coding by taking hybrid automatic repeat request response (HARQ-ACK) information, a Scheduling Request (SR) and first-class Channel State Indication (CSI) information as first-class UCI information;

performing joint coding on the second type CSI information as second type UCI information;

the reliability requirement of the first type of CSI information is higher than that of the second type of CSI information, and the reliability requirement of the first type of UCI information is higher than that of the second type of UCI information.

Preferably, the mapping, by the UE, the UCI of different classes on the uplink channel respectively includes:

and the time-frequency resource unit (RE) mapped by the first type of UCI information and the second type of UCI information does not conflict, or the first type of UCI information covers the RE mapped by the second type of UCI information.

Preferably, when the UE needs to feed back periodic channel state indications P-CSI of N cells in one subframe, the respectively encoding UCI of different classes by the UE includes: performing joint coding on information belonging to rank indication RI category in P-CSI of the N cells as first category UCI information; performing joint coding on information belonging to the class of CQI/PMI in P-CSI of the N cells as second-class UCI information;

when the UE needs to feed back P-CSI and aperiodic CSI for N cells in one subframe, the UE separately encoding UCI of different classes includes: performing joint coding by using information belonging to the RI category in the P-CSI of the N cells and/or information belonging to the RI category in the A-CSI currently triggering each cell as first-category UCI information; performing joint coding by taking information belonging to the class of CQI/PMI in the P-CSI of the N cells and/or information belonging to the class of CQI/PMI in the A-CSI currently triggering each cell as second-class UCI information;

when the UE needs to feed back HARQ-ACK and P-CSI information of N cells in one subframe, the UE respectively encodes UCIs of different classifications, including: performing joint coding on information belonging to RI class and HARQ-ACK information in P-CSI of the N cells as first class UCI information; performing joint coding on information belonging to the CQI/PMI class in the P-CSI of the N cells as second-class UCI information;

when the UE needs to feed back the HARQ-ACK information, the P-CSI information and the A-CSI information of N cells in one subframe, the UE respectively encodes UCIs of different classifications, and the UE comprises the following steps: performing joint coding by taking information belonging to RI in P-CSI of the N cells, information belonging to RI in A-CSI currently triggering each cell and HARQ-ACK information as first UCI information; performing joint coding by taking information belonging to the class of CQI/PMI in the P-CSI of the N cells and information belonging to the class of CQI/PMI in the A-CSI currently triggering each cell as second-class UCI information;

wherein N is an integer.

when the uplink channel is in a Physical Uplink Control Channel (PUCCH) format X, mapping the jointly coded first-class UCI information from a known modulation symbol position, and mapping the jointly coded second-class UCI information from the rear of the first-class UCI information until all modulation symbols of the PUCCH format X are occupied;

when the uplink channel is a Physical Uplink Shared Channel (PUSCH), mapping the jointly coded first type of UCI information from a known modulation symbol position, mapping the jointly coded second type of UCI information from the position behind the first type of UCI information, and using the rest of REs to map uplink data of the PUSCH.

The present application further provides an apparatus comprising: a classification processing module and a mapping module, wherein:

the classification processing module is used for classifying uplink control information UCI and respectively coding, rate matching and modulating the UCI of different classifications;

and the mapping module is used for respectively mapping the UCIs of different classifications on the uplink channel.

The present application also provides a method for multiplexing a periodic channel state indication and an aperiodic channel state indication on an uplink channel, which includes:

the method comprises the steps that User Equipment (UE) determines periodic channel state indication (P-CSI) needing to be fed back together with non-periodic channel state indication (A-CSI) in a current subframe;

and the UE encodes, performs rate matching and modulates the A-CSI and the P-CSI, and maps the A-CSI and the P-CSI to a Physical Uplink Shared Channel (PUSCH) for transmission.

Preferably, the P-CSI required to be fed back together with the a-CSI comprises:

all P-CSI configured to the current subframe;

or, a subset of all the P-CSI mapped to the current subframe is determined according to a set criterion;

or a first part of P-CSI or a subset of the first part of P-CSI in a plurality of P-CSI needing to be fed back in a current subframe, wherein the first part of P-CSI is the first part of P-CSI determined according to a method for feeding back P-CSI on a Physical Uplink Control Channel (PUCCH).

Preferably, a subset of all the P-CSI mapped to the current subframe comprises at least one of:

P-CSI of a primary cell Pcell;

P-CSI of a cell configured with PUCCH;

P-CSI belonging to the RI class;

P-CSI with a priority level higher than a set threshold;

a CSI process Identity (ID), a cell ID and a P-CSI of a CSI subframe set index different from the A-CSI;

and determining the P-CSI fed back together with the A-CSI according to the configuration of the higher layer signaling.

Preferably, the method further comprises: and determining to feed back only the A-CSI or simultaneously feed back the A-CSI and the P-CSI according to different values of a CSI request field triggering the A-CSI.

Preferably, the P-CSI that can be fed back together with the A-CSI is the P-CSI that is allowed to be transmitted according to the mechanism for transmitting P-CSI on PUCCH or a subset of the allowed P-CSI.

Preferably, the number of CSI processes of the A-CSI and the P-CSI which are fed back together in one subframe is less than or equal to N, wherein N is the maximum number of CSI processes of the A-CSI which the UE supports feedback in one subframe, and N is the maximum number of the CSI processes;

or the number of CSI processes of the A-CSI and the P-CSI which are fed back together in one subframe is less than or equal to M, M is the maximum number M of CSI processes which are simultaneously fed back by the UE in one subframe and configured by high-layer signaling, and M is larger than N.

The present application further provides an apparatus comprising: feedback information confirms module and feedback module, wherein:

the feedback information determining module is used for determining P-CSI which needs to be fed back together with the A-CSI in the current subframe;

and the feedback module is used for coding, rate matching and modulating the A-CSI and the P-CSI, and mapping the A-CSI and the P-CSI to a PUSCH for transmission.

The application also provides a method for determining the number of modulation symbols occupied by uplink control information, which comprises the following steps:

user Equipment (UE) encodes Uplink Control Information (UCI) to be fed back in a current subframe;

UE determines parameters for calculating the number of modulation symbols corresponding to UCI for joint coding

Preferably, the UE encoding UCI to be fed back in the current subframe includes: the UE performs joint coding on all UCIs to be fed back in the current subframe;

the UE determines parameters for calculating the number of modulation symbols corresponding to the UCI for joint codingThe method comprises the following steps:

if all UCIs belong to the same type, using the UCI corresponding to the typeCalculating the number of modulation symbols;

if the UCI to be fed back in the current subframe contains different types of UCI, using the UCI corresponding to the different types of UCIThe maximum value of (2) calculates the number of modulation symbols.

Preferably, the UE encoding UCI to be fed back in the current subframe includes: classifying all UCIs to be fed back at the current subframe, and respectively carrying out joint coding on the UCIs of different classifications;

corresponding to CQI/PMI type CSI, in accordance withCalculating the number of modulation symbols;

if no CSI information of RI class exists, HARQ-ACK information is processed according toCalculating the number of modulation symbols;

if the CSI information of RI class exists, HARQ-ACK information and RI information are jointly coded according to the codeCalculating the number of modulation symbols, or according to a predefined ruleAndone of them calculates the number of modulation symbols;

wherein the parametersAndparameters for calculating the number of REs occupied by HARQ-ACK, RI and CQI/PMI on PUSCH, respectively.

Preferably, the UE determines a parameter for calculating the number of modulation symbols corresponding to the UCI for joint codingThe method comprises the following steps:

for PUCCH format X channel, reusing parameter for determining number of REs of UCI on PUSCH And

configuring new parameters for PUCCH format X channelAnd

configuring parameters for PUCCH format X channelAnd is applied to the case of transmitting only HARQ-ACK, transmitting only RI, and simultaneously transmitting HARQ-ACK and RI.

Preferably, for a kind of UCI information, it is not directedConfiguring different parameters for the same PUCCH channel format respectivelyTo control the number of REs occupied for transmitting UCI information.

The present application further provides an apparatus comprising: an encoding module and a computing module, wherein:

the coding module is used for coding the UCI to be fed back in the current subframe;

the calculating module is used for determining the number of modulation symbols corresponding to UCI for joint coding

The present application also provides a method for determining an uplink physical resource block for uplink transmission, including:

the method comprises the steps that User Equipment (UE) determines occupied Physical Resource Block (PRB) resources according to an uplink channel distributed in a current subframe;

and the UE maps the uplink information in the current subframe to a PUSCH channel corresponding to the uplink PRB resource for transmission.

Preferably, if the uplink information in the current subframe includes HARQ-ACK information and P-CSI, and the HARQ-ACK information and the P-CSI are respectively allocated with PRB resources of a corresponding PUCCH format X, mapping, by the UE, the uplink information in the current subframe onto a PUSCH channel corresponding to the uplink PRB resources for transmission includes:

transmitting HARQ-ACK information and P-CSI on one of the two PUCCH format X channels;

or, the HARQ-ACK information and the P-CSI are transmitted on PRB resources of the two PUCCH format X channels.

Preferably, if the uplink information in the current subframe includes uplink control information UCI and uplink data, and the UCI is allocated with a corresponding PRB channel of a PUCCH format X, and the uplink data is allocated with a corresponding PRB resource of a PUSCH channel, the mapping, by the UE, the uplink information in the current subframe onto the PUSCH channel corresponding to the uplink PRB resource for transmission includes:

transmitting the UCI and uplink data by utilizing PRBs of a PUCCH format X channel and PRBs of a PUSCH;

or, transmitting the UCI and the uplink data by using the PRB resources of two PUCCH format X channels and the PRB resources of the PUSCH simultaneously.

Preferably, the number of the uplink PRBs for transmitting UCI and uplink data is a power of 2, 3 and/or 5; and the cluster number of the uplink PRB for transmitting the UCI and the uplink data is less than a set threshold.

The present application further provides a method for determining uplink transmission, including:

and the UE determines the uplink transmission power according to the PRB number and the UCI information needing to be fed back.

Preferably, the number of PRBs is the number of PRBs of the allocated PUSCH; or,

the number of PRBs is the sum of the number of PRBs of the allocated PUSCH and the number of PRBs of the allocated PUCCH format X.

Preferably, when there is upstream data,or,

when the A-CSI is triggered but there is no uplink data, the power control is processed according to the bit number of CQI/PMI of the A-CSI, andor,

when the A-CSI is triggered but there is no uplink data, the power control is processed according to the total bit number of UCI, andarranged as one of the UCI typesThe value is obtained.

Preferably, for uplink transmission mode 2, for the case where a-CSI is triggered but there is no uplink data, K is as above_SProcessing power control unequal to 0; for other cases, according to K_SThe method equal to 0 handles uplink power control.

The present application further provides an apparatus comprising: a resource determination module and a transmission module, wherein:

the resource determining module is used for determining occupied uplink PRB resources according to the uplink channel distributed in the current subframe;

and the transmission module is used for mapping the uplink information in the current subframe to a PUSCH (physical uplink shared channel) corresponding to the uplink PRB resource for transmission.

Therefore, the invention provides a general physical resource mapping method to process various uplink information, can ensure the reliability requirements of different UCI information, optimizes the feedback of P-CSI together with A-CSI so as to reduce the feedback overhead, can fully utilize the uplink channel resources allocated by the base station, and improves the utilization rate of the uplink resources.

Drawings

Fig. 1 is a schematic diagram of mapping of UCI in PUSCH of an LTE system;

fig. 2 is a flowchart of a method for multiplexing UCI on an uplink channel according to the present invention;

FIG. 3 is a flow chart of a method of multiplexing A-CSI and P-CSI on an uplink channel according to the present invention;

fig. 4 is a flowchart of a method for determining the number of modulation symbols occupied by UCI according to the present invention;

FIG. 5 is a flowchart of a method for determining PRB resources for uplink transmission according to the present invention;

FIG. 6 is a first mapping diagram of P-CSI in an embodiment of the present invention;

FIG. 7 is a second mapping diagram of P-CSI in an embodiment of the invention;

FIG. 8 is a first mapping diagram illustrating HARQ-ACK and P-CSI in an embodiment of the present invention;

FIG. 9 is a diagram illustrating a second mapping of HARQ-ACK and P-CSI in an embodiment of the present invention;

FIG. 10 is a diagram illustrating a third mapping of HARQ-ACK and P-CSI in an embodiment of the present invention;

fig. 11 is a schematic diagram illustrating a structure of an apparatus for multiplexing UCI on an uplink channel according to the present invention;

FIG. 12 is a schematic diagram of a structure of an apparatus for multiplexing A-CSI and P-CSI on an uplink channel according to the present invention;

fig. 13 is a schematic diagram illustrating a structure of an apparatus for determining the number of modulation symbols occupied by UCI according to the present invention;

fig. 14 is a schematic diagram of a structure of an apparatus for determining PRB resources for uplink transmission according to the present invention.

Detailed Description

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

The present application is directed to a method and apparatus for multiplexing multiple types of uplink information on an uplink channel. The uplink information may be Uplink Control Information (UCI) or uplink data. The uplink channel may be a PUCCH format X or a PUSCH channel. PUCCH format X may be obtained based on PUCCH format 3 extension, may be obtained based on PUSCH, and may be a channel of another structure. The UCI information can generate a plurality of modulation symbols after being processed by channel coding and the like, and for PUCCH format X channels which do not adopt time and frequency extension, one modulation symbol is mapped to one time-frequency resource unit (RE), for example, the PUCCH format X channel based on a PUSCH structure; alternatively, for a PUCCH format X channel with time and/or frequency spreading, one modulation symbol is also mapped to multiple REs, for example, a PUCCH format X channel based on a PUCCH format 3 channel structure.

In the LTE system, UCI can be classified into various types, namely HARQ-ACK, SR, P-CSI and A-CSI. In one uplink subframe, the UE may need to simultaneously feed back one, more or all of the UCI types. The CSI information is further divided into two types, one of which is information with higher reliability requirement, for example, RI; the other is information with relatively low reliability requirements, e.g. CQI/PMI. The CSI information with higher reliability requirement is referred to as first type CSI information, and the CSI information with lower reliability requirement is referred to as second type CSI information, that is: the first type of CSI information has a higher reliability requirement than the second type of CSI information.

In one aspect of the present invention, a method of multiplexing multiple types of UCI on an uplink channel is provided. The multiplexing method at the UE side is described below, and the base station side can perform demultiplexing by using a corresponding method. Fig. 2 is a flowchart illustrating a method for multiplexing UCI on an uplink channel according to the present invention, which includes the following steps:

step 201: the UE classifies UCI information and respectively encodes, rate matches and modulates the UCI of different classifications, wherein the information with higher requirement on reliability, including HARQ-ACK, SR and first type CSI information, can be jointly encoded; the second type of CSI information, which requires less reliability, may be jointly encoded together.

Step 202: the UE maps UCI of different classes on the uplink channel, that is: the UE maps UCI information with higher requirement on reliability and UCI information with lower requirement on reliability on an uplink channel respectively.

Here, it may be that REs mapped by UCI information having a higher requirement for reliability and UCI information having a lower requirement for reliability do not collide; alternatively, the UCI information with a high requirement for reliability may be used to cover the RE mapped with the UCI information with a low requirement for reliability.

In another aspect of the present invention, a method of multiplexing P-CSI and A-CSI on an uplink channel is provided. The multiplexing method at the UE side is described below, and the base station side can perform demultiplexing by using a corresponding method. For one subframe, when it is required to feed back P-CSI and a-CSI simultaneously, as shown in fig. 3, it is a flowchart of the method for multiplexing P-CSI and a-CSI on uplink channel according to the present invention, which includes the following steps:

step 301: the UE determines P-CSI which needs to be fed back together with the A-CSI in the current subframe.

Here, the P-CSI that needs to be fed back together with the a-CSI may be all the P-CSI mapped to the current subframe; alternatively, it may be determined that the P-CSI that needs to be fed back together with the a-CSI is a subset of all the P-CSI mapped to the current subframe by setting a certain criterion, that is: the P-CSI of only one cell may be fed back, or the P-CSI of a plurality of cells may be fed back. In particular, assuming that a plurality of P-CSI information needs to be fed back in one subframe, according to the method of feeding back P-CSI on PUCCH, only the first part of P-CSI may be fed back on PUCCH, i.e. the remaining P-CSI is discarded. At this time, when the P-CSI and the A-CSI need to be fed back together, the P-CSI which can be fed back together with the A-CSI can only be the first part of P-CSI or a subset of the first part of P-CSI.

Step 302: and the UE performs operations such as coding, rate matching, modulation and the like on the A-CSI and the P-CSI needing to be fed back, and maps the A-CSI and the P-CSI to a PUSCH channel for transmission.

In another aspect of the present invention, a method for determining the number of modulation symbols occupied by UCI of different classes when UCI information is multiplexed on an uplink channel is provided. For example, for a PUSCH-based channel structure, one modulation symbol corresponds to one time-frequency Resource Element (RE). The multiplexing method at the UE side is described below, and the base station side can perform demultiplexing by using a corresponding method. Fig. 4 is a flowchart of a method for determining the number of modulation symbols occupied by UCI according to the present invention, which includes the following steps:

step 401: the UE encodes UCI information to be fed back in the current subframe.

Here, the UE may jointly encode all UCI information to be fed back in the current subframe. Or, the UCI information is classified and respectively coded, wherein the information with higher requirement on reliability, including HARQ-ACK, SR and the first type CSI information, can be jointly coded together; the second type of CSI information, which requires less reliability, may be jointly encoded together.

Step 402: UE determines parameters for calculating the number of modulation symbols corresponding to UCI for joint codingAnd according toAnd determining the number of modulation symbols which need to be occupied by the terminal, performing operations such as rate matching and modulation, and mapping the operations to a PUSCH channel for transmission.

It is assumed that a plurality of kinds of UCI information jointly encoded together are respectively configuredThen determining the modulation symbols occupied after joint coding may be based on one of the types of UCI informationAlternatively, the UCI information may be based on a plurality of UCI informationMaximum value of (2).

In another aspect of the present invention, a method for determining uplink PRB resources for uplink transmission is provided. The multiplexing method at the UE side is described below, and the base station side can perform demultiplexing by using a corresponding method. Fig. 5 is a flowchart illustrating a method for determining uplink PRB resources for uplink transmission according to the present invention, which includes the following steps:

step 501: and the UE determines the occupied uplink PRB resources according to the plurality of uplink channels distributed in the current subframe.

Here, it is assumed that the UE needs to transmit various types of signals in the uplink subframe, including UCI information such as HARQ-ACK, P-CSI, and/or a-CSI, and may further include uplink data, and accordingly, a plurality of uplink channels are allocated, so that the UE may transmit uplink signals on PRB resources from the plurality of uplink channels. Here, there may be other restrictions on the number of PRBs that the UE may use. For example, when uplink transmission is performed based on the PUSCH structure, the PRBs actually used by the UE may still be limited to powers of 2, 3, and/or 5.

Step 502: and the UE performs processing such as coding, rate matching, modulation and the like on the uplink information and maps the processed information to a PUSCH (physical uplink shared channel) for transmission.

Here, the method of mapping physical resources may be the method shown in fig. 8 to 11, or may be another method, and the present invention is not limited thereto.

Example one

In the CA system, when the number of configured cells is large or the size of the bundling window is large, the number of HARQ-ACK bits that the UE needs to feed back is large, for example, larger than 22 bits. In addition, when the number of configured cells is large, the CSI information that the UE needs to feed back is correspondingly increased. In addition, the UE may also need to transmit a Scheduling Request (SR) in the uplink direction. Because the number of bits of both HARQ-ACK and CSI is increased, the existing UCI mapping method as shown in fig. 1 will not meet the performance requirements of UCI transmission in certain situations. For example, taking HARQ-ACK as an example, when the number of bits of HARQ-ACK information is large, but the number of PRBs of PUSCH is small, the method of mapping HARQ-ACK information to only 4 symbols next to DMRS may not be sufficient to guarantee the transmission performance requirement of HARQ-ACK.

The following describes the processing method of multiplexing multiple types of UCI on the uplink channel according to this embodiment.

In the first case:

suppose that the UE needs to feed back P-CSI information of multiple cells within one subframe. These P-CSI may all be information that requires higher reliability, such as RI; alternatively, the information may be both information with low requirement for reliability, such as CQI/PMI; or, the information with higher requirement on reliability and the information with lower requirement on reliability may exist at the same time, that is, in this subframe, the P-CSI of a part of cells is information of RI class, and the P-CSI of another part of cells is information of CQI/PMI class. Here, for the last case, the information with higher reliability requirement may be much more than the information with lower reliability requirement, so the method of mapping RI at 4 symbols as in fig. 1 cannot meet the performance requirement.

When the uplink channel is in a PUCCH format X, carrying out joint coding on P-CSI information of RI and the like of P-CSI information of each cell fed back in a subframe and mapping from a known modulation symbol position; then, carrying out joint coding on the CQI/PMI type P-CSI information and mapping the modulation symbols which are next to the RI type P-CSI information; and finally all modulation symbols of the PUCCH format X are occupied. For example, as shown in fig. 6, for a PUCCH format X channel that does not employ time and frequency spreading, modulation symbols for mapping RI-class P-CSI information in a time-first manner similar to the PUSCH are employed, starting from the first subcarrier of the first symbol; and then mapping modulation symbols of the P-CSI information of the CQI/PMI class until all REs of the PUCCH format X are occupied. For the PUCCH format X channel adopting time and/or frequency spreading, the PUCCH format X channel still carries a plurality of modulation symbols, and according to the method, the modulation symbols are respectively used for carrying P-CSI information of RI and the like and P-CSI information of CQI/PMI and the like.

When the uplink channel is PUSCH, as shown in fig. 7, for the P-CSI of each cell fed back in one subframe, the P-CSI information of RI class therein is jointly encoded and mapped from a known modulation symbol position, for example, from the first subcarrier of the first symbol of the PUSCH channel, according to a time-first manner; then, jointly coding P-CSI signaling belonging to CQI/PMI class and starting mapping following P-CSI information of RI class; the remaining REs are used to map the uplink data.

Here, since CA UEs configured with more than 5 cells generally move at a slow speed, mapping RI-like information to all symbols of a subframe does not affect the link performance of RI.

The methods as in fig. 6 and 7 are also applicable to the case of simultaneous transmission of P-CSI and a-CSI. In this case, the RI-like information in the above method refers to RI-like information in P-CSI of each cell and/or RI-like information in a-CSI currently triggering each cell, and the CQI/PMI-like information refers to CQI/PMI-like information in P-CSI of each cell and/or CQI/PMI-like information in a-CSI currently triggering each cell. Fig. 6 is a case where only a PUSCH is allocated for a-CSI without scheduling uplink data, and fig. 7 is a case where uplink data is scheduled.

In the second case:

suppose that the UE needs to feed back HARQ-ACK information and P-CSI information of multiple cells in one subframe, and consider that information with high reliability requirement and information with low reliability requirement may exist in the P-CSI at the same time. Because the reliability requirement of the HARQ-ACK information is equivalent to that of the RI-class information, the HARQ-ACK information and the RI-class information in the P-CSI can be jointly coded, and in addition, the CQI/PMI-class information in the P-CSI can be jointly coded.

When the uplink channel is in a PUCCH format X, HARQ-ACK information of each cell and P-CSI information belonging to RI class are jointly coded and mapped from a known modulation symbol position; then, carrying out joint coding on P-CSI information belonging to CQI/PMI class of each cell and mapping the P-CSI information following the modulation symbols of HARQ-ACK information and RI class of P-CSI information; and finally all modulation symbols of the PUCCH format X are occupied. For example, as shown in fig. 8, for a PUCCH format X channel that does not employ time and frequency spreading, HARQ-ACK information and P-CSI information belonging to RI class are mapped in a time-first manner similar to PUSCH, starting from the first subcarrier of the first symbol of PUCCH format X; then mapping P-CSI information of each cell belonging to the CQI/PMI class; until all REs of PUCCH format X are occupied. For the PUCCH format X channel adopting time and/or frequency spreading, the PUCCH format X channel still carries a plurality of modulation symbols, and the modulation symbols are used for carrying HARQ-ACK information and P-CSI information such as RI or P-CSI information such as CQI/PMI according to the method.

When the uplink channel is PUSCH, as shown in fig. 9, HARQ-ACK information of each cell and P-CSI information belonging to RI class are jointly encoded and mapped from a known modulation symbol position, for example, from a first subcarrier of a first symbol of PUSCH, according to a time-first scheme; then, the P-CSI signaling belonging to CQI/PMI class of each cell is jointly coded and starts mapping following the P-CSI information of RI class; the remaining REs are used to map the uplink data.

Here, since CA UEs configured with more than 5 cells generally have slow moving speed, mapping HARQ-ACK information and RI-like information to all OFDM symbols of a subframe does not affect the link performance of the HARQ-ACK information and RI.

The methods as in fig. 8 and 9 are also applicable to the case of simultaneous transmission of HARQ-ACK and a-CSI. In this case, the number of PRBs of the PUSCH may be greater than 1, the RI-like information in the above method refers to RI-like information in the a-CSI currently triggering each cell, and the CQI/PMI-like information refers to CQI/PMI-like information in the a-CSI currently triggering each cell. Fig. 8 corresponds to the case where PUSCH is allocated only for a-CSI without scheduling uplink data, and fig. 9 corresponds to the case where uplink data is scheduled.

The methods as in fig. 8 and 9 are also applicable to the case of simultaneous transmission of HARQ-ACK, P-CSI, and a-CSI. In this case, the number of PRBs of the PUSCH may be greater than 1, where the RI-like information in the method refers to RI-like information in the P-CSI of each cell and/or RI-like information in the a-CSI currently triggering each cell, and the CQI/PMI-like information refers to CQI/PMI-like information in the P-CSI of each cell and/or CQI/PMI-like information in the a-CSI currently triggering each cell. Fig. 8 corresponds to the case where PUSCH is allocated only for a-CSI without scheduling uplink data, and fig. 9 corresponds to the case where uplink data is scheduled.

One advantage of using the methods of FIGS. 6-9 is that: when various different combinations of UCI information are processed, a consistent method is adopted to map various UCI information, namely the reliability of the UCI is distinguished, and the information with higher requirement on the reliability, including HARQ-ACK, SR and first type CSI information, are jointly coded; and jointly encode together the second type of CSI information that has lower reliability requirements. By adopting the method, the multiplexing requirement of the A-CSI is also met. Actually, the information (e.g., RI) with higher requirement on reliability and the information (e.g., CQI/PMI) with lower requirement on reliability of the a-CSI need to be encoded and mapped onto the PUSCH channel, respectively, because the specific content of the second type CSI depends on the first type CSI, that is, the base station needs to decode the first type CSI first and then determine the bit number and content of the second type CSI.

Example two

In the existing CA system, when P-CSI and A-CSI need to be fed back in the same subframe, the P-CSI is discarded by a processing method, and only the A-CSI is fed back. However, when the number of configured cells is large, the CSI information that the UE needs to feed back is correspondingly increased, and the probability that the P-CSI and the a-CSI need to be fed back in the same subframe is correspondingly increased. In order to reduce the influence on downlink transmission, it is necessary to support transmission of P-CSI and a-CSI in the same subframe. At this time, all currently triggered a-CSI needs to be fed back, and for the P-CSI in this subframe, a part of the P-CSI or all of the P-CSI may be fed back according to a certain criterion. Several preferred methods provided by the present invention are described below.

The first method is to transmit only the P-CSI of the Pcell in addition to the a-CSI. That is, when the P-CSI mapped to one subframe contains P-CSI of Pcell, the UE feeds back the A-CSI and the P-CSI of Pcell; otherwise, the UE only feeds back the A-CSI. This is because the Pcell is the most important cell for UE operation, and ensuring CSI feedback of the Pcell is more beneficial to ensuring stable operation of the UE.

The second method is to transmit only P-CSI of a cell configured with a PUCCH channel to support feedback of UCI information, in addition to a-CSI. That is, when the P-CSI mapped to one subframe contains P-CSI configured with PUCCH channel to support feedback of UCI information cells, the UE feeds back the A-CSI and the P-CSI of such cells; otherwise, the UE only feeds back the A-CSI. The method has the advantages similar to the first method, and the cell configured with the PUCCH so as to support the feedback of the UCI information undertakes the task of feeding back the UCI, so that the CSI feedback is more favorable for ensuring the effectiveness of downlink transmission.

The third method is to feed back only one type of P-CSI information except the A-CSI. That is, when the P-CSI mapped to one subframe includes the RI-class P-CSI of the cell, the UE feeds back the a-CSI and the RI-class P-CSI of the cell; otherwise, the UE only feeds back the A-CSI. This is because the reliability requirement of RI is higher than that of CQI/PMI, and thus special protection is required, because the influence of discarding P-CSI information like RI is greater than discarding P-CSI information like CQI/PMI.

The fourth method is to feed back only P-CSI information with a priority level higher than a set threshold, in addition to A-CSI. For example, firstly, the CSI information with the highest priority in the a-CSI is determined, and then the characteristic of the CSI information is taken as a threshold, for example, one or more of the parameters of the CSI (for example, CSI report type, CSI process ID, cell ID, and CSI subframe set index) are taken as the threshold to screen the P-CSI to be fed back in the same subframe, and only those P-CSI with higher priority can be fed back together with the a-CSI. For example, the threshold may be defined according to four parameters, or may also be defined according to the last three parameters (e.g., CSI process ID, cell ID, and CSI subframe set index), or may also be defined according to only one parameter (e.g., cell ID). Here, the method of comparing the priorities of a-CSI and P-CSI is: and only comparing corresponding parameters of the CSI information without considering the factors of periodic feedback and aperiodic feedback. For example: assuming that the thresholds are defined by 4 parameters, the CSI report types are compared first, the CSI process IDs are compared if the CSI report types are the same, and so on. By adopting the method, the P-CSI fed back together with the A-CSI is high in priority, so that some more important P-CSI information is still reported on the premise of controlling the feedback overhead. Or, the CSI information with the lowest priority in the a-CSI may be determined first, and then the P-CSI to be fed back in the same subframe is filtered by using one or more parameters of the CSI information as a threshold, and only the P-CSI with the higher priority can be fed back together with the a-CSI. By adopting the method, only P-CSI with extremely low priority is discarded, the feedback overhead is larger, but more CSI information is fed back, thereby being beneficial to downlink transmission. Or after determining the threshold parameter, for example, determining the threshold by using the two methods, the a-CSI and all P-CSI may be fed back together only when the priority of all the P-CSI mapped in the same subframe is higher than the corresponding threshold, otherwise, only the a-CSI is fed back.

A fifth method is to feed back only the part of P-CSI other than the CSI process ID, the cell ID, and the CSI subframe set index of a-CSI in addition to a-CSI. This is because the information fed back by the a-CSI is more sufficient than the P-CSI, and if the CSI information of the same CSI process ID, cell ID, and CSI subframe set index has already been fed back by the a-CSI, it is not necessary to feed back again in the form of the P-CSI. By adopting the method, the feedback overhead is reduced under the condition of maximizing the CSI feedback information quantity. Or, only when the CSI process ID, the cell ID and the CSI subframe set index of all P-CSI corresponding to one subframe are different from the A-CSI in the same subframe, the feedback of all P-CSI and A-CSI is supported, otherwise, only the A-CSI is fed back.

A sixth method is to configure whether one P-CSI report of a UE can be fed back together with a-CSI when configuring the P-CSI report with higher layer signaling. If the configuration supports feedback together with the A-CSI, when the configuration and the A-CSI are located in the same subframe, the UE feeds back the P-CSI and the A-CSI simultaneously; otherwise, the UE only feeds back the A-CSI.

The seventh method is that except for a-CSI, all P-CSI configured to the subframe may be fed back, and at this time, if one cell is deactivated, a bit position needs to be reserved for the P-CSI of the cell; or, only the P-CSI mapped to this subframe of the cell currently in the active state may be fed back. With this method, the number of P-CSI bits that need to be fed back is large, and may be duplicated with the information of a-CSI.

An eighth method is to assume that multiple pieces of P-CSI information need to be fed back in one subframe, according to the method for feeding back P-CSI on PUCCH, only the first part of P-CSI may be fed back on PUCCH, and the rest of P-CSI may be discarded. At this time, when it is required to feed back the P-CSI and the a-CSI together, the P-CSI that can be fed back together with the a-CSI can be only the first part of P-CSI or a subset thereof. Here, a method of determining the subset of the first part P-CSI may be one of the 7 methods described above.

A ninth method is to use different values of the CSI request field triggering a-CSI to indicate different behaviors, i.e. the values of one part of the CSI request field indicate that only a-CSI is fed back, while the values of the other part of the CSI request field indicate that both a-CSI and P-CSI are fed back. Such operations may be configured with higher layer signaling or may be predefined. For example, a value of "01" of the CSI request field indicates that only a-CSI is fed back, and values of other CSI request fields other than "00" indicate that a-CSI and P-CSI are fed back simultaneously. Further, a method of feeding back the a-CSI and the P-CSI simultaneously may be one of the above-described 8 methods.

The tenth approach is to still consider the capability limitation of the UE to process a-CSI when determining P-CSI to be fed back along with a-CSI. For example, if the maximum number of CSI processes that trigger a-CSI fed back by the UE in one subframe is N, it is necessary to ensure that the number of CSI processes of a-CSI and P-CSI fed back together is equal to or less than N. After the P-CSI is determined by adopting one of the above nine methods or other methods, if the sum of the CSI processes of the A-CSI and the P-CSI is greater than N, the P-CSI feedback with higher priority can be selected according to the priority of each P-CSI, and other P-CSI is discarded. For example, the priority strategy for feeding back P-CSI on PUCCH can be reused to handle the priority of P-CSI fed back with A-CSI. For example, taking the UE capability of the existing LTE system as an example, if the number of CSI processes that can trigger a-CSI in a subframe is not greater than 5, after selecting P-CSI by using one of the above nine methods or another method, the number of CSI processes that trigger a-CSI and P-CSI corresponding to a subframe is not greater than 5. Or, when the a-CSI and the P-CSI are fed back simultaneously, the maximum number M of CSI processes that can trigger the UE to feed back simultaneously in one subframe may also be configured with higher layer signaling, or the maximum number M of CSI processes that can trigger the UE to feed back simultaneously in one subframe is predefined and allowed to be M > N. After the P-CSI is determined by adopting one of the above nine methods or other methods, if the sum of the CSI processes of the A-CSI and the P-CSI is greater than M, the P-CSI feedback with higher priority can be selected according to the priority of each P-CSI, and other P-CSI is discarded.

EXAMPLE III

On one uplink subframe, various types of UCI information may need to be transmitted. This requirement is more pronounced as the number of cells of the configured UE increases. On one subframe, the UE may jointly encode, rate match, and modulate all UCI information to be fed back in the current subframe, and then map the UCI information to an uplink channel. Alternatively, the UE may classify the UCI information and encode, rate match, and modulate the UCI information of different classifications, respectively. For example, information with higher requirements for reliability, including HARQ-ACK, SR and CSI information of the first type, may be jointly encoded together; the second type of CSI information, which requires less reliability, may be jointly encoded together. In order to map to the uplink channel, the number of modulation symbols occupied by a group of UCI information coded jointly needs to be calculated.

In the existing LTE CA system, when HARQ-ACK, RI and PMI/CQI need to be multiplexed on PUSCH, parameters are respectively configuredAndand respectively used for calculating the number of REs occupied by the HARQ-ACK, the RI and the PMI/CQI on the PUSCH. For example, according to the LTE specification, when one Transport Block (TB) is transmitted on the PUSCH, the number of REs for carrying HARQ-ACK or RI is calculated according to the following formula,

here, O is the number of bits of HARQ-ACK or RI;the number of subcarriers contained in one SCFDMA symbol by a PUSCH (physical uplink shared channel);the number of SCFDMA symbols of the initial PUSCH transmission of the TB;C,and K_rthe number of the sub-carriers for initial PUSCH transmission, the number of Coded Blocks (CBs) into which the TB is divided, and the number of bits per CB are determined according to an initial (E) PDCCH for scheduling the TB. For the HARQ-ACK,for the RI, the following is the case,based on the above formula for calculating Q 'or a similar method, it is possible to calculate Q' by tuningIntegral parameterTo control the number of modulation symbols to which UCI is allocated.

When UCI is fed back on a PUCCH format X channel, parameters can still be configuredAndand is used to calculate the number of modulation symbols occupied by HARQ-ACK, RI and PMI/CQI on the PUCCH format X channel. The above parametersAndcorrespondence of feedback UCI on PUSCH may be reusedAnd (4) parameters. Alternatively, since the interference profile experienced by the PUCCH format X channel is generally different from that of the PUSCH, its parametersAndcan be different, so the invention provides that new parameters can be configured for PUCCH format X channelAndfor determining the number of modulation symbols occupied by the corresponding UCI type. Because the performance requirements of HARQ-ACK and RI are close, one parameter can be configured for PUCCH format X channelAnd is applied to the case of transmitting only HARQ-ACK, transmitting only RI, and simultaneously transmitting HARQ-ACK and RI.

Further, when it is required to multiplex HARQ-ACK, RI, and PMI/CQI on PUSCH, even if UCI of the same type, when the number of bits thereof is different, optimized parametersAs well as different. Especially for HARQ-ACK, the base station needs to perform DTX detection on the HARQ-ACK transmission, so when the number of HARQ-ACK bits is small, a larger configuration is generally neededTo ensure DTX detection performance; and when the number of HARQ-ACK bits increases, the smallerThe performance requirements can be met. It is assumed that one UE can transmit UCI on PUCCH based on a plurality of PUCCH formats. For example, if the number of UCI bits that need to be fed back is small, for example, no more than 22 bits, the existing PUCCH formats, for example, format 2 or format 3, are still used to transmit UCI; correspondingly, when the number of UCI bits that need to be fed back is relatively large, for example, greater than 22 bits, the UCI is transmitted using the newly defined PUCCH format X. Thus, the invention provides that different parameters are respectively configured for different PUCCH channel formats for one UCI informationTo control the number of REs occupied for transmitting UCI information. Taking HARQ-ACK as an example, when the UE feeds back the HARQ-ACK by PUCCH format 3, the parameters are configuredA value of (d); configuring parameters when UE feeds back HARQ-ACK by PUCCH format XAnother value of (a). This method may be used for HARQ-ACK only, i.e. different parameters are configured for different PUCCH formatsAlternatively, the method may be only used for RI, that is, different parameters are configured corresponding to different PUCCH formatsAlternatively, the method can also be applied to HARQ-ACK and RI, that is, different parameters are configured corresponding to different PUCCH formatsAndor, the method can also be applied to HARQ-ACK, RI and PMI/CQI, that is, different parameters are configured corresponding to different PUCCH formats And

according to the method of the fourth embodiment, when the PUSCH channel is allocated, the information may be transmitted only in the PRBs of the PUSCH channel, and accordingly the number of the PRBs used for transmitting UCI and uplink data is equal to the number of the PRBs of the PUSCH; alternatively, information may be transmitted on an extended PUSCH channel configured by a PUSCH channel PRB and a PUCCH format X PRB, and accordingly, the number of PRBs used for transmitting UCI and uplink data may be equal to the sum of the number of PUSCH PRBs and the number of PUCCH format X PRBs.

According to the method of the fourth embodiment, when only UCI information is fed back, when only one PUCCH format X channel is allocated in one subframe, the number of PRBs correspondingly used for UCI transmission is equal to the number of PRBs of the PUCCH format X channel; or, when multiple UCIs need to be fed back in one subframe and multiple PUCCH format X channels are configured accordingly, the multiple UCIs may be transmitted by only occupying one of the PUCCH format X channels, and the number of PRBs correspondingly used for transmitting UCIs is equal to the number of PRBs of the PUCCH format X channel; alternatively, the UCI may be transmitted by using PRBs of a plurality of PUCCH format X channels at the same time, for example, the UCI is transmitted according to the PUSCH structure on an extended PUCCH channel formed by all PRBs of the plurality of PUCCH format X channels, and accordingly, the number of PRBs used for transmitting the UCI is equal to the total number of PRBs of the plurality of PUCCH format X channels. The following describes the method for determining the number of modulation symbols occupied by UCI information in one uplink subframe according to the present invention.

In the first case:

it is assumed that all UCI information fed back on one uplink channel is jointly coded. For example, the UE needs to feed back P-CSI information of multiple cells within one subframe. These P-CSI may all be information that requires higher reliability, such as RI; alternatively, the information may be both information with low requirement for reliability, such as CQI/PMI; or, the information with higher requirement on reliability and the information with lower requirement on reliability may exist at the same time, that is, in this subframe, the P-CSI of a part of cells is information of RI class, and the P-CSI of another part of cells is information of CQI/PMI class. Assume further that joint coding is adopted for the above-mentioned P-CSI information of multiple cells fed back within one subframe. When the UCI and uplink data need to be multiplexed on the PUSCH, the following method may be adopted to determine the number of modulation symbols used for calculation

If all P-CSI are of the same type, using the corresponding typeNamely: if all P-CSI belongs to RI class, thenIf all P-CSI belongs to the CQI/PMI class, then

β_{o f f s e t}^{P U S C H} = β_{o f f s e t}^{C Q I} .

If the P-CSI fed back in the subframe contains information with higher reliability requirement and information with lower reliability requirement, the two types of information can be adoptedAndmaximum value of (i.e.To calculate the number of modulation symbols required. Generally, the result is in accordance with information requiring high reliabilityTo count the number of modulation symbols, i.e.Alternatively, since the performance requirements of the RI are higher than the CQI/PMI, it can also be directly predefined to followTo calculate the number of modulation symbols.

In the second case:

it is assumed that the UE classifies UCI information and performs coding, rate matching, and modulation, respectively. For example, the UE needs to feed back HARQ-ACK information and P-CSI information of multiple cells within one subframe. Here, HARQ-ACK information and P-CSI information of RI class, which has a high requirement for reliability, are jointly encoded, and simultaneously, all P-CSI information of CQI/PMI class, which has a low requirement for reliability, are jointly encoded.

When the UCI and uplink data need to be multiplexed on the PUSCH, the following method may be adopted to determine the number of modulation symbols used for calculation

Corresponding to the CQI/PMI type P-CSI information,

if there is no P-CSI information of RI type, for HARQ-ACK information,if there is RI-class P-CSI information, HARQ-ACK information and RI information are jointly coded according to two types of informationAndmaximum value of (i.e.To calculate the number of modulation symbols required. Here, since the performance requirements of RI and HARQ-ACK are close,andthey are also closer, but it cannot be concluded that some of them must be larger. Alternatively, because the performance requirements of RI and HARQ-ACK are close, one can also directly predefine according to one of UCI typesTo count the number of modulation symbols, e.g. for this case, predefined

The determination of multiplexing HARQ-ACK and P-CSI on PUSCHThe method of (3) can also be used when feeding back HARQ-ACK and A-CSI on PUSCH. In this case, the RI-like information in the above method refers to RI-like information in a-CSI currently triggering each cell, and the CQI/PMI-like information refers to CQI/PMI-like information in a-CSI currently triggering each cell.

The determination of multiplexing HARQ-ACK and P-CSI on PUSCHThe method of (3) can also be used for feeding back HARQ-ACK, P-CSI and A-CSI on a PUSCH. In this case, the RI-like information in the above method refers to RI-like information in P-CSI of each cell and/or RI-like information in a-CSI currently triggering each cell, and the CQI/PMI-like information refers to CQI/PMI-like information in P-CSI of each cell and/or CQI/PMI-like information in a-CSI currently triggering each cell.

When the HARQ-ACK information and the P-CSI information need to be multiplexed on the PUCCH format X, all modulation symbols are requiredIs used for UCI, so that the proportion of the number of modulation symbols occupied by two types of UCI which are respectively coded only needs to be calculated. The parameter for recording the number of modulation symbols required for determining the HARQ-ACK information and the RI-CSI information with higher reliability requirement isThen can be based onAndthe number of modulation symbols occupied by the UCI with two reliabilities is calculated. For example, assuming that PUCCH format X is a structure for reusing PUSCH, the number of modulation symbols allocated for ARQ-ACK information and P-CSI information such as RI with a high reliability requirement is set to beWherein,is the number of subcarriers contained in the PUCCH format X channel,the number of symbols used for transmitting data in a subframe by a PUCCH-format X channel, O is the bit number of HARQ-ACK information and RI-class P-CSI information with higher reliability requirement, and O is the bit number of the RI-class P-CSI information_CQIIs in terms of the number of bits of the CQI/PMI,according to this method, if there are too few modulation symbols to allocate CQI/PMI, e.g., the coding rate exceeds a certain threshold, then the CQI/PMI may be discarded and all modulation symbols are used for transmitting HARQ-ACK and RI. The threshold is either predefined or configured by higher layer signaling.

When UCI is fed back on PUCCH format X, the parameters areAndcan correspond to UCI fed back on PUSCHThe parameters are equal. Alternatively, even though PUCCH format X is a structure reusing PUSCH, since PUCCH format X generally has a different interference distribution from PUSCH, its parametersAndusually different, the present invention proposes that new parameters can be defined for PUCCH format XAndfor determining the number of modulation symbols occupied by the corresponding UCI type. Since the performance requirements of HARQ-ACK and RI are close, one parameter can be configured for PUCCH format XAnd is applied to the case of transmitting only HARQ-ACK, transmitting only RI, and simultaneously transmitting HARQ-ACK and RI.

Similar to the case of feeding back UCI on PUCCH format X, when PUSCH is allocated only for a-CSI without scheduling uplink data, since all modulation symbols are for UCI, it is only necessary to calculate the ratio of the number of modulation symbols occupied by two types of UCI that are separately encoded. In this case, the number of PRBs of the PUSCH may be greater than 1. When HARQ-ACK and A-CSI need to be fed back on a PUSCH, the RI-class information in the method refers to RI-class information in the A-CSI currently triggering each cell, and the CQI/PMI-class information refers to CQI/PMI-class information in the A-CSI currently triggering each cell. When HARQ-ACK, P-CSI and A-CSI need to be fed back on a PUSCH, the RI-class information in the method refers to RI-class information in the P-CSI of each cell and/or RI-class information in the A-CSI currently triggering each cell, and the CQI/PMI-class information refers to CQI/PMI-class information in the P-CSI of each cell and/or CQI/PMI-class information in the A-CSI currently triggering each cell. Here, since the number of bits of the CQI/PMI of the a-CSI is dependent on RI information of the a-CSI, the number of bits of information of the CQI/PMI class of the a-CSI may be calculated in a manner that the value of RI is 1 when calculating the number of REs occupied by different UCI.

Or, when PUSCH is allocated only for a-CSI without scheduling uplink data, since all modulation symbols are for UCI, the number of REs occupied by HARQ-ACK and RI-like CSI information may be first calculated, and then all remaining REs are used for transmitting CQI/PMI-like information. The parameter for recording the number of modulation symbols required for determining the HARQ-ACK information and the RI-class CSI information isThen can be based onAndthe number Q' of modulation symbols occupied by the HARQ-ACK and RI-like CSI information is calculated, for example,wherein,

β_{o f f s e t}^{P U S C H} = β_{o f f s e t}^{P U S C H, h i g h} / β_{o f f s e t}^{C Q I},

is the number of sub-carriers of the PUSCH channel,is the number of SCFDMA symbols used for transmitting data in a subframe, O is the number of bits of ARQ-ACK information and P-CSI information such as RI, O is the number of bits_CQI-MINIs the number of bits of CQI/PMI, wherein the number of bits of CQI/PMI of a-CSI may be calculated in such a way that RI is equal to 1. According to this method, if there are too few modulation symbols to allocate CQI/PMI, e.g., the coding rate exceeds a certain threshold, then the CQI/PMI may be discarded and all modulation symbols are used for transmitting HARQ-ACK and RI. The threshold is either predefined or configured by higher layer signaling.

In the third case:

it is assumed that HARQ-ACK, CSI information with higher reliability requirement and CSI information with lower reliability requirement need to be fed back simultaneously on one uplink channel, and it is assumed that all the UCI information is jointly encoded. For example, the UE feeds back all information of HARQ-ACK and P-CSI by adopting a joint coding method. When the UCI and uplink data need to be multiplexed on the PUSCH, the following method may be adopted to determine the number of modulation symbols used for calculation

If only one type of UCI currently exists, the corresponding type is usedNamely: if there is only HARQ-ACK, thenIf there is only P-CSI and all P-CSI belong to RI class, thenIf only P-CSI is available and all P-CSI belongs to the class of CQI/PMI

If multiple UCI types currently exist, the UCI types can be followedThe number of modulation symbols is calculated. Taking the simultaneous existence of HARQ-ACK, P-CSI information such as RI with higher reliability requirement and CSI information such as CQI/PMI with lower reliability requirement as examples, the method can be as followsTo calculate the number of modulation symbols required. Generally, the result is information with high reliability requirementsNamely, it isOrThe number of modulation symbols is calculated. Here, because of the performance requirements of RI and HARQ-ACKThe approach of the robot to the robot is,andthey are also closer, but it cannot be concluded that some of them must be larger. Alternatively, since the performance requirements of HARQ-ACK and RI are higher than CQI/PMI, it is also possible to follow RI and HARQ-ACK directlyAndmaximum value of (i.e.To calculate the number of modulation symbols required. Here, since the performance requirements of RI and HARQ-ACK are close,andthey are also closer, but it cannot be concluded that some of them must be larger. Or, further, because the performance requirements of RI and HARQ-ACK are close, it is also possible to directly predefine according to one of UCI typesTo count the number of modulation symbols, e.g. for this case, predefinedAlternatively, a parameter may be configuredAnd is applied to the condition of sending HARQ-ACK and/or RI, and CSI information such as CQI/PMI can also be sent at the same time.

In a fourth case:

it is assumed that the UE classifies UCI information and performs coding, rate matching, and modulation, respectively. For example, the UE needs to feed back HARQ-ACK information and P-CSI information of multiple cells within one subframe. Here, HARQ-ACK may be directly encoded as a type of UCI, and all P-CSI information may be jointly encoded without distinguishing RI and CQI/PMI.

When it is necessary to multiplex HARQ-ACK, P-CSI, and uplink data on PUSCH, the following method may be employed to determine the number of modulation symbols used for calculationFor the HARQ-ACK information, it is,for P-CSI, the parameters may be set according to the method for handling the first case described aboveFor example,when the HARQ-ACK, the P-CSI and the A-CSI need to be fed back simultaneously on the PUSCH, the feedback can also be to the HARQ-ACK,jointly coding all P-CSI information and RI information of A-CSI, and setting according to information with higher reliability requirementFor example,

β_{o f f s e t}^{P U S C H} = m a x (β_{o f f s e t}^{R I}, β_{o f f s e t}^{C Q I});

the CQI/PMI information for the a-CSI is jointly encoded,

β_{o f f s e t}^{P U S C H} = β_{o f f s e t}^{C Q I} .

when it is required to multiplex HARQ-ACK information and P-CSI information on PUCCH format X, since all modulation symbols are for UCI, it may be a number of bits and a weight per each UCI typeTo calculate the number of modulation symbols it occupies. Processing parameters of P-CSI mappingIs composed ofFor example,then can be based onAndthe number of modulation symbols occupied by the UCI with two reliabilities is calculated. For example, assuming that PUCCH format X is a structure reusing PUSCH, the number of modulation symbols allocated for HARQ-ACK information is equal toWherein,is the number of subcarriers contained in the PUCCH format X channel,the number of symbols of a PUCCH format X channel used for transmitting data in a subframe, O is the bit number of HARQ-ACK information, and O is the number of symbols of the HARQ-ACK information_PCSIIs the total number of bits of the P-CSI information. According to this method, if there are too few modulation symbols to allocate P-CSI, e.g., the coding rate exceeds a certain threshold, then P-CSI may be dropped and all modulation symbols are used for transmitting HARQ-ACK. The threshold is either predefined or configured by higher layer signaling.

Similar to the case of feeding back UCI on PUCCH format X, when PUSCH is only allocated for A-CSI without scheduling uplink data, and when HARQ-ACK, P-CSI and A-CSI need to be fed back on PUSCH, the information of RI class in the method refers to all P-CSI information and the information of RI class in the A-CSI currently triggering each cell, all P-CSI information and RI information of A-CSI are jointly coded, and according to reliability, the information is codedDemanding information settingsFor example,the CQI/PMI-like information refers to the CQI/PMI-like information in the P-CSI of each cell and/or the CQI/PMI-like information in the A-CSI currently triggering each cell. Here, since the number of bits of the CQI/PMI of the a-CSI is dependent on RI information of the a-CSI, the number of bits of information of the CQI/PMI class of the a-CSI may be calculated in a manner that the value of RI is 1 when calculating the number of REs occupied by different UCI.

When UCI is fed back on PUCCH format X, the parameters areAndcan correspond to UCI fed back on PUSCHThe parameters are equal. Alternatively, even though PUCCH format X is a structure reusing PUSCH, since PUCCH format X generally has a different interference distribution from PUSCH, its parametersAndusually different, the present invention proposes that new parameters can be defined for PUCCH format XAndfor determining the number of modulation symbols occupied by the corresponding UCI type.

In the fifth case:

it is assumed that the UE encodes, rate matches and modulates HARQ-ACK, RI and CQI/PMI, respectively.

When there is uplink data, a method of processing RE mapping is described below. When the HARQ-ACK and the P-CSI need to be multiplexed on the PUSCH, the parameters can be respectively adopted for corresponding HARQ-ACK, RI and CQI/PMIAndand calculating the number of modulation symbols. When HARQ-ACK and A-CSI need to be multiplexed on PUSCH, parameters can be respectively adopted corresponding to HARQ-ACK, RI and CQI/PMIAndand calculating the number of modulation symbols. When HARQ-ACK, P-CSI, and a-CSI need to be fed back simultaneously on PUSCH, it may be possible to perform a feedback for HARQ-ACK,jointly encoding RI-like information of P-CSI and RI information of A-CSI,jointly encode information such as CQI/PMI of P-CSI and CQI/PMI information of A-CSI,

β_{o f f s e t}^{P U S C H} = β_{o f f s e t}^{C Q I} .

when the above HARQ-ACK and P-CSI information need to be multiplexed on PUCCH format X, since all modulation symbols are for UCI, the number of bits and weight per each UCI type, i.e., HARQ-ACK, RI, and CQI/PMI, may beTo calculate the number of modulation symbols it occupies. For example, assuming that PUCCH format X is a structure reusing PUSCH, the number of modulation symbols allocated for HARQ-ACK information is equal toWherein,is the number of subcarriers contained in the PUCCH format X channel,the number of symbols of a PUCCH format X channel used for transmitting data in a subframe, O is the bit number of HARQ-ACK information, and O is the number of symbols of the HARQ-ACK information_RIIs the number of bits of RI information, O_CQIIs the number of bits of the CQI/PMI information. According to this method, if there are too few modulation symbols to allocate CQI/PMI, e.g., the coding rate exceeds a certain threshold, then the CQI/PMI may be discarded and all modulation symbols are used for transmitting HARQ-ACK and RI. The above thresholds are predefined or configured by higher layer signaling.

Similar to the case of feeding back UCI on PUCCH format X, when PUSCH is allocated only for a-CSI without scheduling uplink data, since all modulation symbols are for UCI, the number of bits and weight values may be per each UCI type, i.e., HARQ-ACK, RI, and CQI/PMITo calculate the number of modulation symbols it occupies. When HARQ-ACK and A-CSI need to be fed back on a PUSCH, the RI-class information in the method refers to RI-class information in the A-CSI currently triggering each cell, and the CQI/PMI-class information refers to CQI/PMI-class information in the A-CSI currently triggering each cell. When HARQ-ACK, P-CSI and A-CSI need to be fed back on a PUSCH, the RI-class information in the method refers to RI-class information in the P-CSI of each cell and/or RI-class information in the A-CSI currently triggering each cell, and the CQI/PMI-class information refers to CQI/PMI-class information in the P-CSI of each cell and/or CQI/PMI-class information in the A-CSI currently triggering each cell.

Or, when PUSCH is allocated only for a-CSI without scheduling uplink data, since all modulation symbols are for UCI, the number of REs occupied by HARQ-ACK and RI-like CSI information may be first calculated, and then all remaining REs are used for transmitting CQI/PMI-like information. For example, for a UCI, the number of modulation symbols it occupiesWherein, when the modulation symbol number of the HARQ-ACK is calculated,when the number of modulation symbols of the RI is calculated, is the number of sub-carriers of the PUSCH channel,is the number of SCFDMA symbols used for transmitting data in the subframe, O is the number of bits of HARQ-ACK information, O is the number of bits_CQIIs the number of bits of CQI/PMI, wherein the number of bits of CQI/PMI of a-CSI may be calculated in such a way that RI is equal to 1. According to this method, e.g.If too few modulation symbols are allocated for CQI/PMI, e.g., the coding rate exceeds a certain threshold, then the CQI/PMI may be discarded and all modulation symbols used for transmission of HARQ-ACK and RI. The above thresholds are predefined or configured by higher layer signaling.

Specifically, when HARQ-ACK and A-CSI need to be fed back on PUSCH, the RI-class information refers to the RI-class information in the A-CSI currently triggering each cell,the CQI/PMI-like information is information that currently triggers CQI/PMI-like information in A-CSI of each cell, i.e., O_CQIIs equal to O_CQI-MIN，O_CQI-MINIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1. When HARQ-ACK, P-CSI and A-CSI need to be fed back on a PUSCH, the RI-class information refers to the RI-class information in the P-CSI of each cell and the RI-class information in the A-CSI currently triggering each cell, all the RI-class information is jointly coded,the CQI/PMI information refers to the CQI/PMI information in the P-CSI of each cell and the CQI/PMI information in the A-CSI currently triggering each cell, all the CQI/PMI information is jointly coded, and O_CQIIs equal to Number of bits of information such as CQI/PMI of P-CSI_CQI-MINIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1. Or, when HARQ-ACK, P-CSI and A-CSI need to be fed back on PUSCH, the RI-class information in the method refers to all P-CSI information and RI-class information in the A-CSI currently triggering each cell, joint coding is carried out on all RI-class information, and the information is set according to information with higher reliability requirementFor example,the CQI/PMI-like information is information that currently triggers CQI/PMI-like information in A-CSI of each cell, i.e., O_CQIIs equal to O_CQI-MIN，O_CQI-MINIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1. Here, since the number of bits of the CQI/PMI of the a-CSI is dependent on RI information of the a-CSI, the number of bits of information of the CQI/PMI class of the a-CSI may be calculated in a manner that the value of RI is 1 when calculating the number of REs occupied by different UCI.

Example four

In the CA system, when the number of configured cells is large or the size of the bundling window is large, the number of HARQ-ACK bits that the UE needs to feed back is large, for example, larger than 22 bits. In addition, when the number of configured cells is large, the CSI information that the UE needs to feed back is correspondingly increased. In addition, the UE may also need to transmit a Scheduling Request (SR) in the uplink direction. In order to support the feedback of more bits of UCI information on PUCCH, a new PUCCH format needs to be defined, namely: PUCCH format X as previously described. Here, it is assumed that multiplexing of only one PUCCH format X channel is supported on the PRB to which PUCCH format X is mapped. One PUCCH format X channel may occupy one or more PRBs. That is, once the PUCCH format X channel is actually allocated, its PRB is dedicated to one UE. For example, PUCCH format X may be a structure of multiplexed PUSCH, with only one symbol for DMRS in each slot; alternatively, the DMRS density may be increased, for example, two DMRS symbols are allocated in each slot. When a UE needs to send multiple types of signals in an uplink subframe, including UCI information such as HARQ-ACK, P-CSI, and/or a-CSI, and may also include uplink data, and a plurality of uplink channels are correspondingly allocated, this embodiment describes a method for transmitting uplink signals using a plurality of such uplink channels.

Suppose that the UE needs to transmit HARQ-ACK information and P-CSI simultaneously in one subframe, and dynamically indicates a PUCCH format X resource for the HARQ-ACK information, and the number of PRBs is recorded as N1; one PUCCH format X resource is semi-statically configured for P-CSI, and the number of PRBs is recorded as N2.

The UE may transmit HARQ-ACK information and P-CSI on one of the two PUCCH format X channels. For example, the UE may use a PUCCH format X channel with a larger number of PRBs, so that the coding rate of UCI information is lower, which is beneficial to ensuring link performance.

Or, because the PRBs occupied by the two PUCCH format X resources are both allocated to only one UE, another processing method is to transmit HARQ-ACK and P-CSI by using the uplink resources of the occupied PRBs of the two PUCCH format X channels at the same time. Here, the UE may transmit HARQ-ACK information and P-CSI using all N1+ N2 PRBs of the two PUCCH format X channels; alternatively, the UE may transmit HARQ-ACK information and P-CSI using a part of all N1+ N2 PRBs of the two PUCCH format X channels. The present invention does not limit the method of selecting the above-described part of the total N1+ N2 PRBs. For example, the number of PRBs used for transmitting HARQ-ACK information and P-CSI is N, where N is equal to or less than N1+ N2, and for a PUCCH format X channel based on PUSCH, the N PRBs are equivalent to PUSCH channel resources occupying N PRBs. In LTE systems, the number of PRBs currently supporting only PUSCH is a power of 2, 3 and/or 5. If it is still necessary to satisfy this restriction, when N does not satisfy the above power condition, it may be tried to reduce the number of PRBs, i.e., N-1, N-2, etc., and a maximum value of the number of PRBs satisfying the power of 2, 3, and/or 5 may be preferentially adopted, keeping this number of PRBs as N, and the present invention does not limit the method of selecting N PRBs from N PRBs for transmitting UCI. As shown in fig. 10, assuming that each PUCCH format X resource occupies one PRB, the method of transmitting PUSCH on the two PRBs may be adopted to process UCI transmission, that is, the length of DMRS sequence is doubled to 24 modulation symbols, and for each symbol, Pre-DFT conversion is performed on 24 modulation symbols of two PRBs together. In the diagram of fig. 10, it is assumed that various pieces of UCI information are mapped according to a time-first method, but the present invention does not limit a specific mapping method of UCI. In some cases, the PRBs of the PUCCH format X channel for allocating HARQ-ACK transmission and the PRBs of the PUCCH format X channel for semi-statically configuring transmission of P-CSI may be partially overlapped or completely overlapped, i.e., the number of PRBs that can actually be used for transmitting HARQ-ACK information and P-CSI is greater than or equal to min (N1, N2), but less than N1+ N2.

Assuming that the UE needs to transmit UCI and uplink data simultaneously in one subframe, the UCI may include HARQ-ACK only, P-CSI only, or both HARQ-ACK and P-CSI. Accordingly, the base station may allocate only one PUCCH format X channel to the UE, or may allocate two PUCCH format X channels and correspond to HARQ-ACK and P-CSI, respectively. Here, note that PUCCH Format X channel for transmission of HARQ-ACK informationThe number of PRBs of (2) is N1, and the number of PRBs used for the PUCCH format X channel of P-CSI is N2. In addition, the UE also allocates a PUSCH channel for transmitting uplink data, and records the number of PRBs of the PUSCH as N_PUSCH. At this time, since the above-allocated PUCCH format X channel is exclusively allocated to the UE, a processing method is to transmit UCI and uplink data using both the PRB of PUCCH format X and the PRB of PUSCH.

The UE may utilize a PRB of a PUCCH format X channel to transmit UCI and uplink data together with a PRB of a PUSCH, and count the number of PRBs of the PUCCH format X channel for uplink transmission to be M, that is, M is equal to N1 or N2, then the UE is in N_PUSCHAnd performing uplink transmission on the uplink resources of the + M PRBs. For example, when the HARQ-ACK and the P-CSI configure PUCCH format X channels, respectively, uplink transmission may be performed with the PUSCH using only PRBs of one of the PUCCH formats X. For example, using PUCCH format X channel allocated to P-CSI. Here, because the PRBs that allocate P-CSI are semi-statically allocated, the base station lacks a mechanism to fully utilize this PRB resource even if not used by the UE. Or, PUCCH format X channel dynamically allocated to HARQ-ACK information may be used, and the base station may use other mechanisms to ensure resource utilization. Or, the UE may perform uplink transmission using both the PRB of the PUCCH format X channel with a larger number of PRBs and the PRB of the PUSCH, so that more available uplink resources are available, which is beneficial to ensuring the link performance. Or if the number of PRBs used by the UE needs to be a power of 2, 3 and/or 5, when determining the PUCCH format X channel used for uplink transmission, preferentially selecting the PUCCH format X channel of which the sum of the number of PRBs and the number of PRBs of the PUSCH channel meets the power of 2, 3 and/or 5, and selecting the PUCCH format X channel occupying a larger number of PRBs. When N is present_PUSCHWhen + M does not satisfy the above power condition, it is possible to try to reduce the number of PRBs, that is, N_PUSCH+M-1、N_PUSCH+ M-2, etc., and the maximum number of PRBs satisfying powers of 2, 3 and/or 5 may be preferably adopted, and the number of PRBs is recorded as M, and the present invention is not limited to the number from N_PUSCHAnd M PRBs are selected from the + M PRBs for transmitting the UCI and the uplink data.

Or PUCCH format X information is respectively configured for HARQ-ACK and P-CSIIn this case, the two PRBs of the PUCCH format X channel may be used for uplink transmission together with the PRB of the PUSCH. Here, the UE may use all N1+ N2 PRBs of the two PUCCH format X channels for uplink transmission; alternatively, the UE may perform uplink transmission using a part of all N1+ N2 PRBs of the two PUCCH format X channels. In some cases, the PRBs of the PUCCH format X channel for allocating HARQ-ACK for transmission and the PRBs of the PUCCH format X channel for semi-statically configuring transmission of P-CSI may be partially overlapped or completely overlapped, i.e., the number of PRBs of the PUCCH format X channel actually available for transmission of UCI and uplink data is greater than or equal to min (N1, N2), but less than N1+ N2. In this way, a part or all of the PRBs of the PUCCH format X channel, which may be used for transmitting UCI and uplink data, are used for transmitting UCI and uplink data. The present invention does not limit the method of selecting the above-described part of all the available PRBs. For example, the number of PRBs used for uplink transmission is counted as N, N is less than or equal to the maximum value of the number of available PRBs, and the UE is in N_PUSCHAnd transmitting UCI and uplink data on uplink resources of + N PRBs. If it needs to be satisfied that the number of PRBs used by the UE is a power of 2, 3 and/or 5, then when N is_PUSCHWhen + N does not satisfy the above power condition, an attempt may be made to reduce the number of PRBs, that is, N_PUSCH+N-1、N_PUSCH+ N-2, etc., and the maximum number of PRBs satisfying powers of 2, 3 and/or 5 may be preferably adopted, and the number of PRBs is recorded as N, and the present invention is not limited to a method of selecting N PRBs from N PRBs for transmitting UCI.

The above method may not limit the number of PRBs of PUSCH, for example, as long as N_PUSCH+ k is still a power of 2, 3 and/or 5, k being the number of PRBs for uplink transmission that the PUCCH format X channel can increase, the UE occupies N_PUSCH+ k PRBs for transmission of UCI and uplink data. Alternatively, the method may be performed only when the number of PRBs of the PUSCH is less than a threshold N_TIs applied only when needed. N is a radical of_TMay be configured with higher layer signaling, or N_TIs predefined, e.g. N_TEqual to 5. This is because when the number of PRBs of the PUSCH is small, transmission of too much UCI information on the PUSCH affects transmission performance of uplink data, and by increasing the number of PRBs, it is possible to increase transmission performance of uplink dataTo reduce the impact on the uplink data transmission.

By adopting the method for simultaneously transmitting UCI and uplink data in one subframe, although the number of PRBs of the PUSCH for transmitting the uplink data is N in the uplink authorization signaling_PUSCHThe UE is actually in N_PUSCHAnd transmitting the uplink data and the UCI on the PUSCH channels of + k PRBs. k is because there is an increased number of PRBs for uplink transmission for PUCCH format X channel. The invention further proposes that N may no longer be limited_PUSCHIs a power of 2, 3 and/or 5, but only limits N_PUSCH+ k is a power of 2, 3 and/or 5.

In the existing LTE system, only the case that the PUSCH channel includes at most two PRB clusters is supported, where PRBs in the same cluster are continuous, and PRBs between different clusters are discontinuous. If this restriction is still maintained, a restriction is imposed on the above-described method of transmitting UCI and uplink data using the PRB of the PUCCH format X channel together with the PRB of the PUSCH. And recording the maximum value of the number of the allowed PRB clusters as q, wherein the number of the PRB clusters used for transmitting the UCI and the uplink data by the UE is less than or equal to q. q may coincide with the number of PRB clusters of the PUSCH transmitting uplink data, e.g., q is equal to 2; alternatively, when transmitting UCI and uplink data simultaneously, q may be allowed to be larger, for example, q equals 3. Here, it may be that the PRB of the PUSCH channel is preferentially used to transmit UCI and uplink data, that is, assuming that the number of PRB clusters of the PUSCH for transmitting uplink data is already q, only when the PRB of the PUCCH format X channel is adjacent to the above-mentioned PRB, the PRB of the PUCCH format X channel and the PRB of the PUSCH may be simultaneously used; otherwise, the PRB of the PUCCH format X channel and the PRB of the PUSCH can be simultaneously utilized, and the number of the PRB clusters actually occupied by the UE is required to be ensured to be less than or equal to q. Or if the number of the PRB clusters formed by the PRB of the PUSCH and the PRB of the PUCCH format X channel is less than or equal to q, all the PRBs of the PUSCH and the PRBs of the PUCCH format X channel can be used for transmitting UCI and uplink data; otherwise, UCI and uplink data may be transmitted on the PRB including the q PRB clusters with the largest number of PRBs. The above method for simultaneously transmitting UCI and uplink data in one subframe is also applicable to PUSCH completely allocated for a-CSI, i.e. there is no uplink number in practiceDepending on the situation of the transmission. The UCI herein may include only HARQ-ACK, only P-CSI, or both HARQ-ACK and P-CSI. At this time, according to the above method, the number of PRBs of the PUSCH to which the A-CSI is allocated is counted as N_PUSCHThen may be at N_PUSCHAnd transmitting UCI and uplink data on + k PRBs, wherein k is the number of PRBs for uplink transmission which can be increased by the existence of the PUCCH format X channel.

EXAMPLE five

According to the existing LTE specifications, in the absence of PUCCH transmission, the transmission power of the PUSCH channel in subframe i of cell c is determined according to:

P_{P U S C H, c} (i) = \min \{\begin{matrix} P_{C M A X, c} (i), \\ 10 \log_{10} (M_{P U S C H, c} (i)) + P_{O_P U S C H, c} (j) + α_{c} (j) \cdot {PL}_{c} + Δ_{T F, c} (i) + f_{c} (i) \end{matrix}\} [d B m] - - - (1)

the definition of each parameter in formula (1) is detailed in chapter 5.1.1.1 of 3GPP specification 36.212, and is briefly described as follows: p_CMAX,c(i) Is the maximum transmission power on cell c of the configured UE; m_PUSCH,c(i) The number of PRBs occupied by the PUSCH; p_{O_PUSCH,c}(j) Is a power offset value for a higher layer signaling configuration; PL_cIs link loss α_c(j) Is all or a portion of the control compensation link loss; f. of_c(i) Is an accumulated value of closed loop power control △_TF,c(i) Is a parameter related to the MCS of the uplink transmission. Specifically, when K_SWhen equal to 0, △_TF,c(i) 0; when K is_SWhen the value is equal to 1.25,for the case of transmitting only a-CSI without transmitting uplink data, BPRE ═ O_CQI/N_RE，For the case where the uplink data is transmitted,c is the number of CBs of a TB division, K_rIs the number of bits of the r-th CB, N_REIs the total number of REs contained in the PUSCH channel.

Assuming that the UE needs to schedule uplink data in one subframe, or triggers a-CSI but there is no uplink data, the base station allocates a PUSCH channel to the UE accordingly. In addition, assuming that the UE needs to feed back UCI in this subframe, the UCI may include only HARQ-ACK, only P-CSI, or both HARQ-ACK and P-CSI, and accordingly, the base station allocates PUCCH format X channel to the UE. Recording the number of PRBs of the allocated PUSCH channel as N_PUSCH. Then, according to the method of the fourth embodiment, it can be at N_PUSCH+ k PRBsAnd transmitting the UCI, the uplink data and/or the A-CSI on a PUSCH channel. Where k is the number of PRBs for uplink transmission that can be increased by the PUCCH format X channel. In particular, k may be equal to 0, i.e., UCI and uplink data are transmitted only on PUSCH.

Corresponding to the above method, the total number of PRBs after the addition, that is, N, may be determined_ext＝N’_PUSCH+ k for uplink power control. Wherein, N'_PUSCHIs the number of PRBs of the allocated PUSCH channel. For the case of scheduling uplink data, N'_PUSCHMay refer to the number of PRBs N allocated for uplink data transmission in the current subframe_PUSCHOr, N'_PUSCHOr may refer to the number of PRBs allocated by the same TB at the time of its initial transmission. N 'when A-CSI is triggered but there is no uplink data'_PUSCHMay refer to the number of PRBs N allocated for uplink data transmission in the current subframe_PUSCH。

Based on equation (1), M can be set_PUSCH,c(i) Is the total number N of PRBs_ext. Based on the formula (1), when K_SParameter △ when equal to 0_TF,c(i) 0; when K is_SWhen the value is not equal to 0, the value,e.g. K_SEqual to 1.25, described below as K_SFor parameter △ when not equal to 0_TF,c(i) The method of (1).

First treatment △_TF,c(i) The method of (3), when there is upstream data,the BPRE is according to the current data bit number and the total number N of PRBs_extTo calculate, i.e.N_RE＝N_ext·M'_PUSCH. When a-CSI is triggered but there is no uplink data,the BPRE may be the number of bits O of CQI/PMI according to A-CSI_CQIAnd total number of PRBs N_extIs calculated, i.e. BPRE ═ O_CQI/N_RE，N_RE＝N_ext·M'_PUSCH。O_CQIIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1. Or, when the a-CSI is triggered but there is no uplink data, the total number of bits of the UCI and the total number of PRBs N may be counted_extAnd one of UCIFor example, of the UCI with the highest reliability requirementsTo process △_TF,c(i) BPRE may be the total number of bits O in terms of UCI_UCIAnd total number of PRBs N_extIs calculated, i.e. BPRE ═ O_UCI/N_RE，N_RE＝N_ext·M'_PUSCH。。

Second treatment △_TF,c(i) The method of (3), when there is upstream data,the BPRE is the PRB number N 'allocated for uplink data transmission according to the current data bit number'_PUSCHTo calculate the time of the calculation of the time of the calculation,N_RE＝N'_PUSCH·M'_PUSCH. When a-CSI is triggered but there is no uplink data,BPRE is the number of bits O of CQI/PMI according to A-CSI_CQIAnd allocating the number N 'of PRBs for uplink data transmission'_PUSCHTo calculate, BPRE ═ O_CQI/N_RE，N_RE＝N'_PUSCH·M'_PUSCH. Or, when the a-CSI is triggered but there is no uplink data, the total number of bits of the UCI and the total number of PRBs of the PUSCH may be countedN’_PUSCHAnd one of UCIFor example, of the UCI with the highest reliability requirementsTo process △_TF,c(i) BPRE may be the total number of bits O in terms of UCI_UCIAnd total number of PRBs of PUSCH N'_PUSCHIs calculated, i.e. BPRE ═ O_UCI/N_RE，N_RE＝N'_PUSCH·M'_PUSCH。O_CQIIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1.

Third treatment △_TF,c(i) The method of (3), when there is upstream data,BPRE＝N_tot/N_RE。N_totnumber of bits N that may refer to UCI_UCIAnd the number of bits of uplink dataIs a sum ofWhen feeding back multiple UCI types, N_UCIIs the total number of bits for the various UCI types. Or, N_totOr the equivalent data bit total number of UCI and uplink data, and for a UCI type, the bit number is recorded as N_UCI,kThen the parameters of this UCI type can be usedIs marked asObtain the equivalent data bit numberThereby to obtain

N_{t o t} = Σ_{r = 0}^{C - 1} K_{r} + \underset{k}{Σ} (β_{o f f s e t, k}^{P U S C H} \cdot N_{U C I, k}) .

The UCI type can refer to HARQ-ACK, CQI/PMI or RI; alternatively, for P-CSI, the total number of bits of P-CSI may be referred to instead of distinguishing CQI/PMI from RI. N is a radical of_REAlso according to the total number of PRBs N_extIs calculated or is only according to the number N 'of PRBs allocated for uplink data transmission'_PUSCHTo calculate.

When a-CSI is triggered but there is no uplink data,BPRE＝N_tot/N_RE。N_totnumber of bits N that may refer to UCI_UCIAnd bit number O of CQI/PMI of A-CSI_CQIOf (1) and, i.e. N_tot＝N_UCI+O_CQIWhen feeding back multiple UCI types, N_UCIIs a ratio of various UCI typesThe total number of bits. Or, N_totThe number of bits O of CQI/PMI of UCI and A-CSI can also be referred to_CQIThe equivalent CQI bit number of a UCI type is recorded as N_UCI,kThen the parameters of this UCI type can be usedIs marked asObtain the equivalent data bit numberThereby to obtainThe UCI type can refer to HARQ-ACK, CQI/PMI or RI from P-CSI; alternatively, for P-CSI, the total number of bits of P-CSI may be referred to instead of distinguishing CQI/PMI from RI. N is a radical of_REAlso according to the total number of PRBs N_extIs calculated or is only according to the number N 'of PRBs allocated for uplink data transmission'_PUSCHTo calculate. O is_CQIIs the number of bits of the CQI/PMI calculated for a-CSI in RI equal to 1.

In the above three processes, M'_PUSCHMay refer to the number of SCFDMA symbols allocated uplink resources for uplink data transmission in the current subframe, i.e., the number of SCFDMA symbols allocated uplink resources for uplink data transmission in the current subframe Is the number of SCFDMA symbols in a time slot, N_SRSIs the number of SCFDMA symbols used for SRS transmission in the current subframe; or, M'_PUSCHThe number of SCFDMA symbols of uplink resource allocated by the same TB in initial transmission, i.e. the number of SCFDMA symbolsN_SRSMeans that the same TB is at its initial transmissionThe number of SCFDMA symbols used for SRS transmission in the uplink subframe of (2).

Additionally, the process △ discussed above_TF,c(i) The method of (3) may be applied to K only_SCase not equal to 0. When uplink transmission mode 2 is configured, i.e. uplink MIMO transmission is supported, the existing standard constraint K_SEqual to 0, and thus cannot pass through △_TF,c(i) Especially for the case where A-CSI is triggered but there is no uplink data, the UE actually uses single layer (layer) transmission but still cannot pass △_TF,c(i) To control the uplink transmission power. For the uplink transmission mode 2, in order to better control the uplink power, the invention proposes that the situation that the A-CSI is triggered but no uplink data exists can be controlled according to the K_SNot equal to 0, e.g. K_S△ is processed by a method equal to 1.25_TF,c(i) And uplink power control; while for other cases K is still used_SThe method equal to 0 handles uplink power control.

In addition, the parameter P is set for the case where there is uplink data and for the case where A-CSI is triggered but there is no uplink data, respectively_{O_PUSCH,c}(j) In that respect Thus, the uplink power control can be adjusted according to the performance difference between the transmission of uplink data and the transmission of only a-CSI.

When the power control of the PUCCH is processed based on the above power control method of the PUSCH, for example, for the case where the PUCCH is based on the PUSCH structure, the parameter K may be configured for each of the power control of the uplink data transmission and the power control of the PUCCH_SWhereby upstream data transmission is based on K_SWhen the power control is processed to be equal to 0, the PUCCH power control can still be configured to be based on K_SGreater than 0, for example 1.25. Alternatively, the power control parameter K may be independent of uplink data transmission_SPre-defined PUCCH power control fixed basis to process on K_SGreater than 0, for example 1.25.

EXAMPLE six

On one uplink subframe, canVarious types of UCI information can need to be transmitted. Recording the number of modulation symbols as N on an uplink channel_REFor UCI type k, the number of bits is recorded as N_kCorresponding parametersIs composed of

The uplink channel can be a PUCCH format X channel so as to feed back HARQ-ACK and/or P-CSI; alternatively, for the case where a-CSI is triggered but there is no uplink data, the uplink channel may be a PUSCH channel. Or, with the method of the fourth embodiment, the uplink channel refers to a PRB set of multiple PUCCH format X channels; alternatively, the uplink channel refers to a PRB set of a PUSCH channel and a PUCCH format X channel.

The UCI type may be to distinguish CQI/PMI, RI, and HARQ-ACK, for example, sequentially denote UCI type K, K is equal to 0,1,2, and the total number K of UCI types is equal to 3, and encode the 3 UCI types and calculate the number of REs mapped thereto, respectively. Or, dividing the UCI into K equal to 2 types, respectively encoding the 2 UCI types and respectively calculating the number of the mapped REs. For example, the CQI/PMI is recorded as UCI type 0, and the HARQ-ACK, SR and RI are jointly coded and recorded as UCI type 1; or, without distinguishing RI from CQI/PMI, P-CSI is recorded as UCI type 0, and HARQ-ACK is recorded as UCI type 1.

The reliability requirements of different types of UCI are generally different, and their relative reliability may be passed through parametersTo control. Generally, the reliability requirements for CQI/PMI are lower relative to HARQ-ACK and RI. When the number of REs occupied by different UCI types is allocated, the number of bits according to UCI type k and its parameters may beCome to countCalculate the occupied RE. For example, with the method of embodiment 3, when there are two UCI types, UCI type 0 is allocated as many modulation symbols asThe lower rounding is used in this formula because UCI type 0 represents a UCI type with lower reliability requirements. However, this calculated number Q' of modulation symbols may result in a particularly high coding rate for UCI type 0, even greater than 1. This results in that UCI type 0 cannot be transmitted, especially when the method of embodiment four is employed, in the case of multiple PUCCH format X channels or PRBs of both PUSCH channel and PUCCH format X channel are employed. In this case, there are always sufficient REs for carrying uplink transmissions.

The invention provides a method for pre-allocating a certain number of modulation symbols, which are recorded as M, to the K-th UCI type, K is 0,1_k。M_kMay be determined according to the lowest performance requirement of the UCI type k, e.g., according to the maximum coding rate R that the UCI type k may employ_k，Different UCI types R_kWhich may be the same or different, R_kCan be predefined or configured by higher layer signaling, N_CRCIs the number of bits of CRC added to UCI type k, Q_mIs the modulation order. In particular, the maximum coding rate R of each UCI type k_kMay be related to its parametersThe proportional relationship of (a) is the same.

If the sum of the number of pre-allocated modulation symbols of the K UCI typesEqual to the total number of modulation symbols N of the uplink channel_REThe number of pre-allocated modulation symbols is then eachThe number of modulation symbols allocated by the UCI type.

If it is notGreater than N_REThat is, the number of REs in the uplink channel is not enough to transmit HARQ-ACK and CSI simultaneously, at this time, part or all of CSI information may be discarded, and new M may be recalculated_kUntil obtainingThe present invention does not limit the method of dropping a part or all of the CSI information.

If it is notLess than N_REI.e. after calculating the required number of modulation symbols according to the minimum performance requirement, there remainsA plurality of modulation symbols, the remaining modulation symbols may be used to improve performance of one or more UCI types. And the modulation symbol number of the UCI type k allocated to the residual modulation symbols is Q'_kAnd thus the total number of occupied modulation symbols Q of UCI type k_k＝Q′_k+M_k。

If it is notLess than N_REThe above-mentioned remaining modulation symbols may be fully used for the UCI type with the highest transmission reliability requirement, e.g. HARQ-ACK. Alternatively, the remaining modulation symbols may be equal to each UCI type to be fed back to the current subframe. Alternatively, the remaining modulation symbols may be allocated in proportion to the number of bits of each UCI type. For example, the number of modulation symbols to which UCI type 0 is allocated among the remaining modulation symbols is

Or, ifLess than N_REThe allocation of the remaining modulation symbols may be based on the number of bits of UCI type k and the maximum coding rate R_k. I.e. according to the maximum coding rate R mentioned above_kThe ratio of (c) allocates the above-mentioned remaining modulation symbols for each UCI type. For example, the number of modulation symbols to which UCI type 0 is allocated among the remaining modulation symbols isBy adopting the method, the proportion of the actual coding rate of each UCI type and the maximum coding rate R thereof are ensured_kAre the same or close. For the above-mentioned number of bits based on UCI type k and maximum coding rate R_kThe method for allocating the remaining modulation symbols may be directly based on the total number of modulation symbols N_RETo calculate the total number of modulation symbols allocated to UCI type k, e.g., the total number of modulation symbols allocated to UCI type 0 is

Or, ifLess than N_REThe allocation of the remaining modulation symbols may also be based on the number of bits of UCI type k and its parametersI.e. according to the parametersThe ratio of (c) allocates the above-mentioned remaining modulation symbols for each UCI type. For example, the number of modulation symbols to which UCI type 0 is allocated among the remaining modulation symbols is

Or, ifLess than N_REUnder the condition of ensuring that each UCI type at least distributes the modulation symbol number meeting the minimum performance requirement, the number is distributed as much as possible according to the parametersThe ratio of (2) controls the ratio of the number of modulation symbols allocated by the UCI type. Specifically, based on the total number of modulation symbols N_RENumber of bits based on UCI type k and its parametersCalculating the number of modulation symbols Q of UCI type k "_kI.e. according to parametersIs divided into all N_RENumber of modulation symbols, e.g. UCI type 0If each UCI type meets the constraint of its minimum performance requirement, i.e., Q "_k≥M_kK-1, then UCI type K allocates the total number of modulation symbols Q_k＝Q”_k. Otherwise, for UCI types p, i.e., Q, that do not meet minimum performance requirements "_p<M_pSo that the total number of modulation symbols allocated is M_p(ii) a Next, note that the total number of modulation symbols allocated by all UCI types p that do not meet the minimum performance requirement isFor the restModulation symbols, bits number and parameter according to remaining UCI typeTo allocate modulation symbols and continue to determine whether the number of modulation symbols allocated for each UCI type meets the limit of its minimum performance requirement and process accordingly. In particular, it is assumed that UCI fed back within one subframe is divided into two types, the number of bits and parameters thereofAre respectively marked as N_kAndand recording the minimum number of modulation symbols needing to be distributed of the two UCI types as M_kAnd k is 0,1, the number of modulation symbols to which UCI type 0 is allocated may be,

accordingly, the number of modulation symbols of UCI type 1 is allocated as Q₁＝N_RE-Q₀. In particular, it is assumed that UCI fed back within one subframe is divided into three types, the number of bits thereof and parameters thereofAre respectively marked as N_kAndand recording the minimum number of modulation symbols needing to be distributed of the three UCI types as M_kAnd k is 0,1, 2. When allocating modulation symbols, it may be preferable to enhance the performance of the UCI type having a large index k value. For example, the reliability requirement of HARQ-ACK is generally higher than that of RI and CQI/PMI, and the reliability requirement of CQI/PMI is the lowest, and UCI of k 0,1,2 may be made to correspond to CQI/PMI, RI and HARQ-ACK, respectively. However, the present invention does not limit the use of other priority orders of CQI/PMI, RI, and HARQ-ACK. For example,the number of modulation symbols to which UCI type 2 is allocated may be,

accordingly, the number of modulation symbols allocated to UCI type 1 is,

accordingly, the number of modulation symbols of UCI type 0 is allocated as Q₀＝N_RE-Q₂-Q₁。

The invention proposes that when a plurality of UCI types need to be fed back in a subframe, the total number of UCI bits and the total number N of REs of an uplink channel are firstly determined_REIt is determined whether transmission of all UCI information can be supported. E.g. in terms of total number of UCI bits N_UCITo calculate the coding rate R ═ (N)_UCI+K·N_CRC)/N_RE/Q_mIf the coding rate exceeds a certain threshold R_limitThen, part or all of the CSI information may be lost, and the new coding rate is recalculated until the coding rate is less than R_limit。R_limitMay be predefined or configured for higher layer signaling. The present invention does not limit the method of dropping a part or all of the CSI information. Next, a certain number of modulation symbols, denoted as M, are pre-allocated to the kth UCI type, K is 0,1_k。M_kCan be according to the coding rate threshold R for UCI type k_limitNumber of modulation symbols calculated, M_k＝(N_k+N_CRC)/R_limit/Q_m. If the sum of the number of pre-allocated modulation symbols of the K UCI typesEqual to the total number of modulation symbols N of the uplink channel_REThe number of pre-allocated modulation symbols is then the modulation allocated for each UCI typeThe number of symbols. If it is notLess than N_REThen for the restModulation symbols, which can be based on the number of bits of UCI type k and its parametersTo calculate RE number Q 'occupied by the RE'_kSo that the total number of occupied modulation symbols of UCI type k is Q'_k+M_k. For example, the number of modulation symbols to which UCI type 0 is allocated among the remaining modulation symbols isOr, ifLess than N_REUnder the condition of ensuring that each UCI type at least distributes the modulation symbol number meeting the minimum performance requirement, the number is distributed as much as possible according to the parametersThe ratio of (2) controls the ratio of the number of modulation symbols allocated by the UCI type. Specifically, based on the total number of modulation symbols N_RENumber of bits based on UCI type k and its parametersCalculating the number of modulation symbols Q of UCI type k "_kI.e. according to parametersIs divided into all N_RENumber of modulation symbols, e.g. UCI type 0If each UCI type meets the limit of its minimum performance requirementI.e. Q "_k≥M_kK-1, then UCI type K allocates the total number of modulation symbols Q_k＝Q”_k. Otherwise, for UCI type p which does not meet the minimum performance requirement, p is more than or equal to 0 and less than or equal to K-1, namely Q'_p<M_pSo that the total number of modulation symbols allocated is M_p(ii) a Next, note that the total number of modulation symbols allocated by all UCI types p that do not meet the minimum performance requirement isFor the restModulation symbols, bits number and parameter according to remaining UCI typeTo allocate modulation symbols and continue to determine whether the number of modulation symbols allocated for each UCI type meets the limit of its minimum performance requirement and process accordingly. In particular, it is assumed that UCI fed back within one subframe is divided into two types, the number of bits and parameters thereofAre respectively marked as N_kAndand recording the minimum number of modulation symbols needing to be distributed of the two UCI types as M_kAnd k is 0,1, the number of modulation symbols to which UCI type 0 is allocated may be,

accordingly, the number of modulation symbols of UCI type 1 is allocated as Q₁＝N_RE-Q₀. In particular, it is assumed that UCI fed back within one subframe is divided into three types, the number of bits thereof and parameters thereofAre respectively marked as N_kAndand recording the minimum number of modulation symbols needing to be distributed of the three UCI types as M_kAnd k is 0,1, 2. When allocating modulation symbols, it may be preferable to enhance the performance of the UCI type having a large index k value. For example, the reliability requirement of HARQ-ACK is generally higher than that of RI and CQI/PMI, and the reliability requirement of CQI/PMI is the lowest, and UCI of k 0,1,2 may be made to correspond to CQI/PMI, RI and HARQ-ACK, respectively. However, the present invention does not limit the use of other priority orders of CQI/PMI, RI, and HARQ-ACK. For example, the number of modulation symbols to which UCI type 2 is allocated may be,

accordingly, the number of modulation symbols allocated to UCI type 1 is,

When the UE transmits HARQ-ACK and P-CSI, or HARQ-ACK and A-CSI, it is assumed that its uplink channel is a PRB set of multiple PUCCH format X channels, or that its uplink channel refers to a PRB set of a PUSCH channel and a PUCCH format X channel. Since the REs used for uplink transmission are sufficiently large, it is also possible not to detect whether the total number of modulation symbols exceeds the number of modulation symbols calculated according to the minimum performance requirement, i.e. without processingGreater than N_REBut is directly processedIs equal to or less than N_REThe situation is.

Corresponding apparatuses are provided for the methods shown in fig. 2 to 5, respectively, and are described below.

Fig. 11 is a schematic diagram of a structure of an apparatus for multiplexing UCI on an uplink channel according to the present invention, where the apparatus shown in fig. 11 includes: a classification processing module and a mapping module, wherein:

the classification processing module is used for classifying the UCI and respectively coding, rate matching and modulating the UCI of different classifications;

Fig. 12 is a schematic diagram of a structure of an apparatus for multiplexing a-CSI and P-CSI on an uplink channel according to the present invention, where the apparatus shown in fig. 12 includes: feedback information confirms module and feedback module, wherein:

Fig. 13 is a schematic diagram of a structure of a device for determining the number of modulation symbols occupied by UCI according to the present invention, where the device shown in fig. 13 includes: an encoding module and a computing module, wherein:

Fig. 14 is a schematic structural diagram of a component of an apparatus for determining PRB resources for uplink transmission according to the present invention, where the apparatus shown in fig. 14 includes: a resource determination module and a transmission module, wherein:

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A method for multiplexing uplink control information on an uplink channel, comprising:

the UE maps UCI of different classes on the uplink channel, respectively.

2. The method of claim 1, wherein the UE separately encoding UCI of different classes comprises:

3. The method of claim 2, wherein:

when the UE needs to feed back periodic channel state indications P-CSI of N cells in one subframe, the UE separately encoding UCI of different classes includes: performing joint coding on information belonging to rank indication RI category in P-CSI of the N cells as first category UCI information; performing joint coding on information belonging to the class of CQI/PMI in P-CSI of the N cells as second-class UCI information;

wherein N is an integer.

4. A method for multiplexing periodic channel state indications and aperiodic channel state indications on an uplink channel, comprising:

5. The method of claim 4, wherein the P-CSI that needs to be fed back with the A-CSI comprises:

all P-CSI configured to the current subframe;

or P-CSI of a primary cell Pcell;

or, P-CSI of a cell configured with PUCCH;

or, P-CSI belonging to the RI class;

or, the priority level is higher than the P-CSI of a set threshold;

or, a CSI process Identity (ID), a cell ID and a P-CSI of a CSI subframe set index different from the A-CSI;

or determining P-CSI fed back together with the A-CSI according to the configuration of the higher layer signaling.

6. The method of claim 4, wherein: the number of CSI processes of the A-CSI and the P-CSI which are fed back together in one subframe is less than or equal to N, wherein N is the maximum number of CSI processes of the A-CSI which the UE supports feedback in one subframe and is N;

or, the number of CSI processes of the A-CSI and the P-CSI which are fed back together in one subframe is less than or equal to M, M is the maximum number M of CSI processes which are simultaneously fed back by the UE in one subframe and configured by high-layer signaling, and M > N.

7. A method for determining the number of modulation symbols occupied by uplink control information, comprising:

UE determines parameters for calculating the number of modulation symbols corresponding to UCI for joint codingAnd determines the number of modulation symbols allocated to each UCI type.

8. The method of claim 7, wherein:

the UE encoding the UCI to be fed back in the current subframe comprises the following steps: the UE performs joint coding on all UCIs to be fed back in the current subframe;

9. The method of claim 7, wherein: the UE determines parameters for calculating the number of modulation symbols corresponding to the UCI for joint codingThe method comprises the following steps:

for PUCCH format X channel, reusing parameter for determining number of REs of UCI on PUSCH Andor,

configuring new parameters for PUCCH format X channelAndor,

configuring parameters for PUCCH format X channelAnd is applied to the conditions of only transmitting HARQ-ACK, only transmitting RI and simultaneously transmitting HARQ-ACK and RI; or,

for a UCI information, different parameters are respectively configured for different PUCCH channel formatsTo control the number of REs occupied for transmitting UCI information.

10. A method for determining an uplink physical resource block for uplink transmission, comprising:

11. The method of claim 10, wherein:

if the uplink information in the current subframe comprises HARQ-ACK information and P-CSI, and the HARQ-ACK information and the P-CSI are respectively allocated with corresponding PRB resources of PUCCH format X, the UE maps the uplink information in the current subframe to a PUSCH channel corresponding to the uplink PRB resources for transmission, and the transmission comprises the following steps:

12. The method of claim 10, wherein:

if the uplink information in the current subframe comprises uplink control information UCI and uplink data, the UCI is allocated with a corresponding PRB channel of a PUCCH format X, and the uplink data is allocated with a corresponding PRB resource of a PUSCH channel, the UE maps the uplink information in the current subframe to the PUSCH channel corresponding to the uplink PRB resource for transmission, and the transmission comprises the following steps:

or, transmitting the UCI and the uplink data by using the PRB resources of two PUCCH format X channels and the PRB resources of the PUSCH simultaneously;

the number of the uplink PRBs for transmitting the UCI and the uplink data is a power of 2, 3 and/or 5, and the cluster number of the uplink PRBs is smaller than a set threshold.

13. A method for determining uplink transmissions, comprising:

determining occupied uplink resources by User Equipment (UE) according to an uplink channel allocated in a current subframe;

and the UE determines the uplink transmission power according to the PRB number of the uplink resources and the UCI information needing to be fed back.

14. The method of claim 13, wherein:

the PRB number is the number of the allocated PRBs of the PUSCH; or,

15. The method of claim 13, wherein:

uplink power control formula, power offset based on PUSCHThe processing method comprises the following steps:

when there is uplink data present, the uplink data, c is the number of CBs of a TB division, K_rIs the number of bits of the r-th CB; or,

when the A-CSI is triggered but no uplink data exists, processing power control according to the bit number of CQI/PMI of the A-CSI, wherein BPRE is O_CQI/N_REAnd is andO_CQIthe number of bits of CQI/PMI calculated for A-CSI according to RI equal to 1; or,

when A-CSI is triggered but no uplink data exists, processing power control according to the total bit number of UCI, wherein BPRE is O_UCI/N_REAnd is andarranged as one of the UCI typesValue, total number of bits of UCI O_UCI；

Wherein N is_REIs the number of REs used for uplink transmission.