CN108811135B

CN108811135B - Data transmission method and device

Info

Publication number: CN108811135B
Application number: CN201710314180.4A
Authority: CN
Inventors: 高雪娟; 潘学明
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2020-02-07
Anticipated expiration: 2037-05-05
Also published as: WO2018201902A1; CN108811135A

Abstract

The invention discloses a data transmission method and a data transmission device, which are used for solving the problem that the prior art has no related scheme to solve the collision problem of uplink channels which are transmitted by using different TTI lengths in the same time unit. The method comprises the following steps: determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI length in time unit i, the first uplink channel and the second uplink channel overlapping in time; obtaining a time node for determining that the second uplink channel exists in the time unit i; and/or obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i; and determining the uplink channel needing to be transmitted in the time unit i and transmitting the uplink channel based on the time node and/or the overlapped symbol position.

Description

Data transmission method and device

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background

With the development and change of the mobile communication service demand, a plurality of organizations such as the international telecommunication union define higher user plane delay performance requirements for future mobile communication systems. One of the main methods to shorten the user Time-delay performance is to reduce the length of the Transmission Time Interval (TTI), i.e., support short TTI (short TTI) Transmission. A typical way of operating short TTI transmissions is to include a plurality of sTTI transmissions of less than 1ms in the subframe structure defined in the existing LTE scheme, for example, transmissions of length such as 2 symbols or 3 symbols or 4 symbols or 7 symbols, without excluding other sTTI transmissions of length less than 1 ms. The uplink supports the sUSCH and the sUCCH, and the sUCCH can be at least used for carrying ACK/NACK feedback information of downlink transmission using the sTTI.

A terminal supporting sTTI transmission may also support dynamic switching between 1ms TTI and sTTI, that is, the terminal may simultaneously have a CHannel using the length of 1ms TTI and a CHannel using sTTI in one subframe, for example, a Physical Uplink Shared CHannel (PUSCH) and a short PUSCH (short PUSCH)/short Physical Uplink control CHannel (sPUCCH) in the same subframe, or for example, a Physical Downlink Shared CHannel (PDSCH) and a short PDSCH (sPDSCH, short PDSCH) are simultaneously scheduled for transmission in the same subframe, or for example, a PUCCH and a sPUSCH/sPUCCH in the same subframe, and so on.

The above transmissions may exist on the same carrier at the same time, and at this time, for uplink, in order to ensure single carrier characteristics to achieve a lower PAPR/CM, the same terminal cannot simultaneously transmit PUSCH and sPUSCH/sPUCCH on the same carrier, or simultaneously transmit PUCCH and/sPUSCH/sPUCCH. There is currently no relevant solution to solve this collision problem to guarantee single carrier characteristics.

The above transmission may also exist on different carriers when the terminal aggregates multiple carriers, at this time, the sum of the transmit powers of all the uplink channels transmitted in parallel cannot exceed the maximum transmit power limit allowed by the terminal, otherwise, the transmit power of the terminal is limited, and no relevant scheme is currently available to solve the collision problem to avoid power limitation.

Therefore, there is no relevant scheme for solving the collision problem of uplink channels with different TTI lengths to ensure single carrier characteristics and avoid power limitation.

Disclosure of Invention

The embodiment of the invention provides a data transmission method and a data transmission device, which are used for solving the problem that the prior art has no related scheme to solve the collision problem of uplink channels which are transmitted by using different TTI lengths in the same time unit.

The embodiment of the invention provides the following specific technical scheme:

in a first aspect, an embodiment of the present invention provides a data transmission method, including:

determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI length in time unit i, the first uplink channel and the second uplink channel overlapping in time;

obtaining a time node for determining that the second uplink channel exists in the time unit i; and/or

Obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i;

and determining the uplink channel needing to be transmitted in the time unit i and transmitting the uplink channel based on the time node and/or the overlapped symbol position.

In a possible embodiment, the time node is a time in the time unit i or a time before the time unit i.

In a possible embodiment, when the time node is the time in the time unit i, the determining, based on the time node and/or the overlapping symbol position, an uplink channel that needs to be transmitted in the time unit i and transmitting the uplink channel includes:

and determining to transmit the first uplink channel in the time unit i.

judging whether the position of the overlapped symbol is the position of a pilot symbol or a bearing UCI symbol of the first uplink channel;

if yes, determining to transmit the first uplink channel in the time unit i;

and if not, the symbols which are overlapped with the second uplink channel in the first uplink channel are punched, and the first uplink channel and the second uplink channel which are punched in the time unit i are determined to be transmitted.

In a possible embodiment, when the time node is a time before the time unit i, the determining, based on the time node and/or the overlapping symbol position, an uplink channel that needs to be transmitted in the time unit i and transmitting the uplink channel includes:

and determining to transmit the second uplink channel in the time unit i.

and determining to transmit an uplink control channel in the first uplink channel and the second uplink channel in the time unit i.

determining an uplink channel carrying UCI in the first uplink channel and the second uplink channel; determining an uplink channel for transmitting the UCI in the time unit i;

if a plurality of uplink channels bearing UCI exist, determining the uplink channel bearing high-priority UCI from the uplink channels bearing UCI;

and determining the uplink channel carrying the high-priority UCI in the time unit i.

determining the first uplink channel as an uplink shared channel or an uplink control channel not using a time domain orthogonal sequence or an uplink channel carrying UCI;

if yes, determining to transmit the second uplink channel in the time unit i;

In a possible embodiment, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

if yes, determining to transmit the first uplink channel only in the time unit i;

if not, the symbols which are overlapped with the second uplink channel in the first uplink channel are punched, and the first uplink channel and the second uplink channel which are punched in the time unit i are determined to be transmitted; or, based on the time node, determining the uplink channel to be transmitted in the time unit i and transmitting the uplink channel.

In a possible embodiment, the determining, based on the time node, an uplink channel that needs to be transmitted in the time unit i and transmitting the uplink channel includes:

when the time node is the moment in the time unit i, determining to transmit the first uplink channel in the time unit i;

when the time node is a time before the time unit i, determining to transmit the second uplink channel in the time unit i; or

Determining to transmit an uplink control channel of the first uplink channel and the second uplink channel in the time unit i; or

And determining an uplink channel carrying high-priority UCI in the first uplink channel and the second uplink channel transmitted in the time unit i.

In a possible embodiment, the first transmission time interval TTI length is greater than the second transmission time interval TTI length; and/or

The time unit i is N subframes or time slots or micro time slots or sTTI or symbols, and N is an integer greater than or equal to 1; and/or

The first uplink channel and the second uplink channel are on the same carrier or on different carriers.

In a possible embodiment, after said determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI, length in time unit i, the method further comprises:

judging whether the sum of the transmitting power of the first uplink channel and the transmitting power of the second uplink channel exceeds a preset maximum transmitting power;

if yes, executing the following steps: obtaining a time node for determining that a second uplink channel is transmitted by using a second Transmission Time Interval (TTI) length in the time unit i; and/or obtaining overlapping symbol positions for transmission of the second uplink channel using the second TTI length and the first uplink channel using the first TTI length in the time unit i.

In a possible embodiment, after determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position, the method further includes:

obtaining UCI carried on a third uplink channel which is not transmitted or punched in the first uplink channel and/or the second uplink channel;

and transferring the UCI on the third uplink channel to a fourth uplink channel which is determined to be transmitted or not punched in the first uplink channel and/or the second uplink channel according to a preset rule.

In a possible embodiment, the transferring the UCI on the third uplink channel to the first uplink channel and/or the second uplink channel according to a preset rule to determine a fourth uplink channel that needs to be transmitted or is not punctured specifically includes at least one of the following manners:

mode A: transferring all UCI on the third uplink channel to the fourth uplink channel;

mode B: when the UCI on the third uplink channel is ACK/NACK and/or SR, transferring the UCI on the third uplink channel to the fourth uplink channel;

mode C: when the UCI on the third uplink channel contains P-CSI, if the fourth uplink channel carries P-CSI, discarding the P-CSI on the third uplink channel, and if the fourth uplink channel does not carry P-CSI, transferring the P-CSI on the third uplink channel to the fourth uplink channel;

mode D: when the fourth uplink channel comprises an uplink shared channel and an uplink control channel which are transmitted by using the first transmission time interval TTI length, transferring UCI on the third uplink channel to a preset one of the uplink shared channel and the uplink control channel which are transmitted by using the first transmission time interval TTI length in the fourth uplink channel for transmission; or, transferring a part of the UCI on the third uplink channel to the uplink shared channel which uses the first transmission time interval TTI length to transmit in the fourth uplink channel, and transferring another part of the UCI on the third uplink channel to the uplink control channel which uses the first transmission time interval TTI length to transmit in the fourth uplink channel;

mode E: when there is an uplink shared channel on multiple carriers simultaneously in the time unit i that is determined to need transmission or is not punctured and transmitted using the first TTI length, determining that the uplink shared channel transmitted with the first TTI length on the PCC is a fourth uplink channel if the uplink shared channel transmitted with the first TTI length exists on a Primary Component Carrier (PCC), if the uplink shared channel transmitted by using the first transmission time interval TTI length does not exist on the PCC, determining that the uplink shared channel transmitted by using the first transmission time interval TTI length on the SCC with the smallest carrier number in the secondary component carrier SCC transmitted by using the uplink shared channel transmitted by using the first transmission time interval TTI length is a fourth uplink channel; transferring UCI on the third uplink channel to the fourth uplink channel;

mode F: if the fourth uplink channel is an uplink shared channel corresponding to Random Access Response (RAR) permission, the UCI of the third uplink channel is not transmitted;

mode G: when the fourth uplink channel is an uplink channel transmitted by using the second transmission time interval TTI length, if an uplink shared channel transmitted by using the second transmission time interval TTI length and an uplink control channel transmitted by using the second transmission time interval TTI length exist in the second transmission time interval TTI at the same time, transferring UCI on the third uplink channel to a predetermined one of the uplink shared channel and the uplink control channel transmitted by using the second transmission time interval TTI length in the fourth uplink channel for transmission; or, transferring a part of the UCI on the third uplink channel to the uplink shared channel which is transmitted by using the second transmission time interval TTI length in the fourth uplink channel for transmission, and transferring another part of the UCI on the third uplink channel to the uplink control channel which is transmitted by using the second transmission time interval TTI length in the fourth uplink channel for transmission;

mode H: determining a first or last uplink channel of the plurality of uplink channels transmitted using the second TTI length as a fourth uplink channel when the determining that the uplink channel that needs to be transmitted or is not punctured in the first TTI comprises the plurality of uplink channels transmitted using the second TTI length; transferring UCI on the third uplink channel to the fourth uplink channel;

mode I: when the uplink channels which need to be transmitted or are not punctured in the first transmission time interval TTI length are determined to comprise a plurality of uplink channels which are transmitted by using the second transmission time interval TTI length, transferring the P-CSI in the UCI on the third uplink channel to the uplink channel which carries the P-CSI in the uplink channels which are transmitted by using the second transmission time interval TTI length, and transferring the ACK/NACK and/or the SR in the UCI on the third uplink channel to the uplink channel which carries the ACK/NACK and/or the SR in the uplink channels which are transmitted by using the second transmission time interval TTI length;

mode J: when an uplink shared channel which is determined to need to be transmitted and transmitted by using the second transmission time interval TTI length exists on a plurality of carriers simultaneously in the time unit i within the transmission time of the second transmission time interval TTI length, if the uplink shared channel which is transmitted by using the second transmission time interval TTI length exists on a PCC, determining that the uplink shared channel which is transmitted by using the second transmission time interval TTI length on the PCC is a fourth uplink channel; if the uplink shared channel transmitted by using the second transmission time interval TTI length does not exist on the PCC, determining that the uplink shared channel transmitted by using the second transmission time interval TTI length on the SCC with the smallest carrier number in the SCCs transmitted by using the uplink shared channel transmitted by using the second transmission time interval TTI length is a fourth uplink channel; transferring UCI on the third uplink channel to the fourth uplink channel.

In a possible implementation manner, the obtaining and determining that the time node of the second uplink channel exists in the time unit i specifically includes:

when the terminal receives a downlink control channel corresponding to the second uplink channel before the time unit i, determining the time node as the time before the time unit i; alternatively, the first and second electrodes may be,

when the terminal receives a downlink control channel corresponding to the second uplink channel in the time unit i, determining the time node as the time in the time unit i; alternatively, the first and second electrodes may be,

when the terminal receives a downlink control channel corresponding to the second uplink channel in or before a jth subframe or time slot or micro time slot or sTTI or symbol before the time unit i, determining the time node as a time before the time unit i; alternatively, the first and second electrodes may be,

and when the terminal receives the downlink control channel corresponding to the second uplink channel in or after the jth subframe or time slot or micro time slot or sTTI or symbol before the time unit i, determining the time node as the time in the time unit i.

In a second aspect, an embodiment of the present invention provides an apparatus, including:

a first determining module, configured to determine that there exists a first uplink channel transmitted using a first TTI length and a second uplink channel transmitted using a second TTI length in time unit i, where the first uplink channel and the second uplink channel overlap in time;

a first obtaining module, configured to obtain a time node that determines that the second uplink channel exists in the time unit i; and/or obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i;

and a second determining module, configured to determine, based on the time node and/or the overlapping symbol position, an uplink channel that needs to be transmitted in the time unit i and perform transmission.

In a possible implementation manner, the second determining module is specifically configured to:

and when the time node is the moment in the time unit i, determining to transmit the first uplink channel in the time unit i.

when the time node is the time in the time unit i, judging whether the position of the overlapped symbol is the position of a pilot symbol or a bearing UCI symbol of the first uplink channel;

if yes, determining to transmit the first uplink channel in the time unit i;

and when the time node is a time before the time unit i, determining to transmit the second uplink channel in the time unit i.

and when the time node is a time before the time unit i, determining that the uplink control channel in the first uplink channel and the second uplink channel is transmitted in the time unit i.

when the time node is a time before the time unit i, determining an uplink channel carrying UCI in the first uplink channel and the second uplink channel; determining an uplink channel for transmitting the UCI in the time unit i;

when the time node is a time before the time unit i, determining that the first uplink channel is an uplink shared channel or an uplink control channel which does not use a time domain orthogonal sequence or an uplink channel carrying UCI;

if yes, determining to transmit the second uplink channel in the time unit i;

In a possible embodiment, the apparatus further comprises:

a determining module, configured to determine whether a sum of transmission powers of a first uplink channel and a second uplink channel exceeds a preset maximum transmission power after determining that the first uplink channel transmitted using a first TTI length and the second uplink channel transmitted using a second TTI length exist in a time unit i;

an executing module, configured to, if the determination result of the determining module is yes, execute the following steps: obtaining a time node for determining that a second uplink channel is transmitted by using a second Transmission Time Interval (TTI) length in the time unit i; and/or obtaining overlapping symbol positions for transmission of the second uplink channel using the second TTI length and the first uplink channel using the first TTI length in the time unit i.

In a possible embodiment, the apparatus further comprises:

a second obtaining module, configured to obtain, after the uplink channel that needs to be transmitted in the time unit i is determined and transmitted based on the time node and/or the overlapping symbol position, a UCI carried on a third uplink channel that is not transmitted or punctured in the first uplink channel and/or the second uplink channel;

a transferring module, configured to transfer the UCI on the third uplink channel to a fourth uplink channel that is determined to be required to be transmitted or not punctured in the first uplink channel and/or the second uplink channel according to a preset rule.

In a possible embodiment, the transferring module transfers the UCI on the third uplink channel to a fourth uplink channel determined to be transmitted or not punctured in the first uplink channel and/or the second uplink channel according to a preset rule by at least one of the following manners:

In a possible implementation manner, the obtaining module is specifically configured to:

In a third aspect, an embodiment of the present invention provides an apparatus, including a processor, a memory, and a transceiver, where the transceiver receives and transmits data under the control of the processor, the memory stores a preset program, the processor reads the program in the memory, and executes the following processes according to the program:

the processor determines that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI, length in time unit i, the first uplink channel overlapping in time with the second uplink channel;

the processor obtains a time node for determining that the second uplink channel exists in the time unit i; and/or

and the processor determines the uplink channel needing to be transmitted in the time unit i and transmits the uplink channel based on the time node and/or the overlapped symbol position.

In a possible embodiment, when the time node is a time in the time unit i, the processor determines to transmit the first uplink channel in the time unit i.

In a possible implementation manner, when the time node is a time in the time unit i, the processor is specifically configured to:

if yes, determining to transmit the first uplink channel in the time unit i;

In a possible embodiment, when the time node is a time before the time unit i, the processor determines to transmit the second uplink channel in the time unit i.

In a possible embodiment, when the time node is a time before the time unit i, the processor determines to transmit an uplink control channel of the first uplink channel and the second uplink channel in the time unit i.

In a possible implementation manner, when the time node is a time before the time unit i, the processor is specifically configured to:

if yes, determining to transmit the second uplink channel in the time unit i;

In a possible embodiment, the processor is specifically configured to:

after determining that a first uplink channel transmitted by using a first Transmission Time Interval (TTI) length and a second uplink channel transmitted by using a second TTI length exist in a time unit i, judging whether the sum of the transmission power of the first uplink channel and the transmission power of the second uplink channel exceeds a preset maximum transmission power;

In a possible embodiment, the processor is specifically configured to:

obtaining a UCI carried on a third uplink channel which is not transmitted or punctured in the first uplink channel and/or the second uplink channel after determining and transmitting the uplink channel which needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position;

In a possible embodiment, the processor is specifically configured to perform at least one of the following:

In a possible embodiment, the processor is specifically configured to:

Based on the above technical solution, an embodiment of the present invention provides a data transmission method, where when uplink channels are transmitted on a carrier using different TTI lengths in the same time unit, it may be determined that time nodes of other uplink channels exist in the time unit; and/or overlapping symbol positions among uplink channels in a time unit, and determining the uplink channels needing to be transmitted in the time unit, so that when the uplink channels with different TTI lengths are transmitted on the carrier wave in the same time unit, the collision among the channels can be avoided, the single carrier wave characteristic is ensured, and the limitation of power is avoided.

Drawings

Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating that PUSCH/PUCCH in subframe i overlaps with sPUCCH/sPUSCH on carrier c using sTTI of 2 symbol length transmitted on 6 th and 7 th symbols in the first slot of subframe i according to the embodiment of the present invention;

fig. 3 is a diagram illustrating that only PUSCH/PUCCH is transmitted on carrier c in the embodiment of the present invention;

fig. 4 is a schematic diagram illustrating transmission of a punctured PUSCH/PUCCH and sPUCCH/sPUSCH on a carrier c in an embodiment of the present invention;

FIG. 5 is a schematic diagram illustrating that a PUSCH/PUCCH in a subframe i and an sPUCCH/sUSCH using sTTI of 3 symbol length are overlapped on a carrier c when the PUSCH/PUCCH in the subframe i and the sPUCCH/sUSCH are transmitted on the 1 st to 3 rd symbols in the first slot in the subframe i in the embodiment of the present invention;

fig. 6 is a schematic diagram of transmitting sPUCCH/sPUSCH only on carrier c in the embodiment of the present invention;

fig. 7 is a schematic diagram illustrating transmission of a punctured PUSCH/PUCCH and sPUCCH/sPUSCH on a carrier c in an embodiment of the present invention;

fig. 8 is a diagram illustrating that only PUSCH/PUCCH is transmitted on carrier c in the embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another apparatus according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The data transmission method in this embodiment is mainly applied to devices such as a terminal and a base station, and of course, other devices may also be used, and the present application is not limited thereto. The present embodiment mainly takes the application to the terminal as an example for detailed explanation, and when the present embodiment is applied to the base station, the sending behavior of the corresponding terminal is the receiving behavior of the base station.

In the embodiment of the present invention, as shown in fig. 1, the data transmission process is as follows:

step 101: determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI length in time unit i, the first uplink channel and the second uplink channel overlapping in time;

step 102: obtaining a time node for determining that the second uplink channel exists in the time unit i; and/or obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i;

step 103: determining and transmitting an uplink channel needing to be transmitted in the time unit i based on the time node and/or the overlapping symbol position;

the first transmission time interval TTI length is greater than the second transmission time interval TTI length; and/or

Specifically, in this embodiment, the terminal determines that the uplink channel transmitted using the first TTI length and the uplink channel transmitted using the second TTI length can be supported to be transmitted simultaneously. The first transmission time interval TTI length may be 1ms, the second transmission time interval TTI length may be an sTTI length of no more than 1ms, such as 2, 3, 4, 7 symbols, etc., or both the first transmission time interval TTI length and the second transmission time interval TTI length may be two different sTTI lengths of no more than 1 ms. In addition, the terminal needs to determine that it can support simultaneous transmission of the uplink control channel transmitted using the first TTI length and the uplink shared channel transmitted using the second TTI length, and/or that it can support simultaneous transmission of the uplink shared channel transmitted using the first TTI length and the uplink control channel transmitted using the second TTI length.

Furthermore, in the time unit i, the terminal may have a first uplink channel transmitted by using the first TTI length and a second uplink channel transmitted by using the second TTI length, and the first uplink channel and the second uplink channel may be on the same carrier or different carriers.

For uplink, in order to ensure single carrier characteristics to achieve a lower PAPR/CM, the same terminal cannot simultaneously transmit PUSCH and sPUSCH/sPUCCH on the same carrier, or simultaneously transmit PUCCH and/sPUSCH/sPUCCH. Possible solutions in the prior art are to discard one or more of the channel transmissions, or to puncture the uplink channel using the 1ms TTI in the part overlapping with the sTTI, in order to avoid such overlapping transmissions. However, if the terminal does not have enough time to determine whether there is uplink channel transmission using sTTI in the subframe where the PUSCH or PUCCH is located before starting to transmit the uplink channel (such as PUSCH or PUCCH) with the length of 1ms TTI, the terminal cannot give up transmission of the uplink channel using 1ms TTI in time. For PUCCH format 1/1a/1b/3, there is an orthogonal sequence in the time domain, and if some symbols in one slot are punctured, the orthogonality is destroyed, which causes the punctured PUCCH of the terminal to interfere with other terminals multiplexed and transmitted in the same Resource Block (RB) as the terminal. For the PUSCH, if MU-MIMO is performed, if the puncturing position is RS, the base station side cannot acquire the RS of the terminal, and when receiving the PUSCH of another terminal performing MU-MIMO transmission with the terminal, interference cancellation by the RS of the terminal cannot be performed on the PUSCH of the other terminal, thereby causing interference of data of the terminal with data of the other MU-MIMO terminal.

In the same time unit, when multiple carriers are aggregated, uplink channels with different TTI lengths may be transmitted on different carriers, and multiple channels with different TTI lengths are transmitted in parallel, which may cause the transmit power of the terminal to be limited, and at this time, a mechanism is required to avoid the power limitation.

For example: the PDSCH and the sPDSCH are scheduled to be transmitted on the same carrier or different carriers at the same time in the same time unit, or the PUCCH and the sUSCH/sCUCCH exist on the same carrier or different carriers at the same time in the same time unit, or the PUSCH and the sUSCH/sCUCH exist on the same carrier or different carriers at the same time in the same time unit. In order to avoid higher PAPR/CM on the same carrier, the single carrier characteristic is ensured not to be capable of transmitting a plurality of uplink channels in an overlapping manner, and the transmission power of the terminal is limited when the uplink channels with different TTI lengths are transmitted on different carriers simultaneously, so that the terminal obtains a time node for determining that a second uplink channel exists in a time unit i; and/or obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i, and further determining the uplink channel to be transmitted in the time unit i according to the time node and/or the overlapping symbol position, so that the transmission performance of other terminals multiplexed with the channel is not influenced when the uplink channels with different TTI lengths are transmitted on the carrier in the same time unit on the basis of realizing the purpose of ensuring the single carrier characteristic or avoiding the power limitation.

In this embodiment, in the step: after determining that there is a first uplink channel transmitted using the first TTI length and a second uplink channel transmitted using the second TTI length in time unit i, the method further comprises the steps of:

Specifically, in this embodiment, if the first uplink channel and the second uplink channel are transmitted on different carriers. The terminal needs to determine whether the sum of the transmission powers of the first uplink channel and the second uplink channel exceeds a preset maximum transmission power, where the preset maximum transmission power is a maximum transmission power that can be supported by the terminal. If the sum of the transmission power of the first uplink channel and the second uplink channel does not exceed the maximum transmission power that can be supported by the terminal, the first uplink channel and the second uplink channel can be transmitted simultaneously on different carriers. If the maximum transmitting power which can be supported by the terminal is exceeded, the terminal determines that a time node of a second uplink channel exists in the time unit i; and/or the overlapping symbol positions of the second uplink channel and the first uplink channel in time unit i, and determining which uplink channels need to be transmitted in time unit i. Such as: according to the limitation of the maximum transmitting power, corresponding puncturing or accepting or rejecting operations are performed on part of uplink channels in the first uplink channel and the second uplink channel on different carriers, for example, according to a preset priority, the uplink channel with a high priority is selected to be reserved and not processed, and the uplink channel with a low priority is preferentially punctured or discarded until the total power is lower than the maximum transmitting power. The priority may be based on a certain priority or a combination of multiple priorities, such as a carrier number, a carrier priority, a loaded UCI, a priority of a channel itself, a priority of a TTI length, and the like.

Further, the data transmission method in this embodiment includes: determining and transmitting an uplink channel which needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position, wherein the method can be divided into the following two methods in the specific implementation process:

the first method comprises the following steps: determining and transmitting the uplink channel which needs to be transmitted in the time unit i based on the time node which determines that the second uplink channel exists in the time unit i.

In this embodiment, the obtaining and determining that the time node of the second uplink channel exists in the time unit i specifically includes:

Specifically, when the second uplink channel is an uplink shared channel, the downlink control channel corresponding to the second uplink channel is a downlink control channel, that is, an UL grant, for transmitting the scheduling signaling of the second uplink channel, and the downlink control channel is transmitted using an uplink DCI format. When the second uplink channel is an uplink control channel, the downlink control channel corresponding to the second uplink channel is a downlink control channel (DL grant) for indicating downlink SPS resource release and requiring ACK/NACK feedback on the second uplink channel or a downlink control channel for scheduling a downlink shared channel requiring ACK/NACK feedback on the second uplink channel, and the downlink control channel is transmitted by using a downlink DCI format.

Since the time node is the time in the time unit i or the time node is the time before the time unit i, in the first method, the following two cases can be divided according to the difference of the time node:

in the first case: the time node is a time in the time unit i, and the determining and transmitting the uplink channel to be transmitted in the time unit i may specifically include the following modes:

mode 1-1: determining to transmit the first uplink channel in the time unit i; that is, the UE abandons transmission of the second uplink channel in the time unit i, and only transmits the first uplink channel.

Mode 1 to 2: judging whether the position of the overlapped symbol is the position of a pilot symbol or a UCI-bearing symbol of the first uplink channel (wherein, the UCI symbol judgment is only needed to be carried out when the UCI is carried on the first uplink channel); if yes, determining to transmit the first uplink channel in the time unit i, namely abandoning to transmit the second uplink channel and only transmitting the first uplink channel; and if not, the symbols which are overlapped with the second uplink channel in the first uplink channel are punched, and the first uplink channel and the second uplink channel which are punched in the time unit i are determined to be transmitted.

The puncturing, that is, the first uplink channel takes the overlapping symbols into consideration when performing channel coding and rate matching, and when performing resource mapping, information of the first uplink channel that should be mapped to the overlapping symbols is discarded or set to zero or covered by information of a second uplink channel, and normal mapping and transmission are performed on other non-overlapping symbols.

Specifically, in the present embodiment, as shown in fig. 2, when the PUSCH/PUCCH in subframe i overlaps with sPUCCH/sPUSCH using sTTI of 2 symbol length transmitted on the 6 th and 7 th symbols in the first slot in subframe i, on carrier c. In the first case, since the receiving time of the DL grant/UL grant triggering sPUCCH/sPUSCH transmission is relatively close to the transmission starting time of the first slot of the subframe i, the terminal cannot determine whether sPUCCH/sPUSCH exists on the carrier c in the first slot of the subframe i before the first slot of the subframe i starts, that is, the terminal determines that sPUCCH/sPUSCH still exists on the carrier c in the 6 th and 7 th symbols of the first slot of the subframe i only during the transmission process of PUSCH/PUCCH in the first slot of the subframe i, and at this time, PUSCH/PUCCH has already started transmission in the first slot of the subframe i.

The terminal may adopt the above mode 1-1, as shown in fig. 3, the terminal only transmits PUSCH/PUCCH on carrier c in the first slot of subframe i, and of course, if there is no sPUCCH/sPUSCH transmission in the second slot, PUSCH/PUCCH may continue to transmit, and if there is sPUCCH/sPUSCH transmission, the same process is performed, and sPUCCH/sPUSCH on carrier c in 6 th and 7 th symbols of the first slot in subframe i is abandoned.

The terminal may also adopt the above-mentioned mode 1-2, as shown in fig. 4, the terminal determines whether sPUCCH/sPUSCH overlaps with pilot symbols of PUSCH/PUCCH. If it is assumed that there is only PUSCH on carrier c overlapping with sPUCCH/sPUSCH in subframe i, or only PUCCH format4 or 5 is overlapped with sUCCH/sUSCH, or when the PUSCH and the PUCCH format4 or 5 are overlapped with the sPUCCH/sUSCH, since the pilot of PUSCH and PUCCH format4 or 5 is transmitted on the 4 th symbol in each slot, therefore, the pilot frequencies of the sPCH/sUSCH and the PUSCH/PUCCH are not overlapped, the terminal punches the PUSCH/PUCCH on the 6 th and 7 th symbols on the carrier c in the first slot of the subframe i, i.e. the uplink channel transmitted using the first TTI length of the transmission time interval is considered for the overlapping symbols when channel coding and rate matching, when the resource mapping is carried out, the information which should be mapped to the overlapped symbols is lost or set to zero, normal mapping and transmission is performed on other non-overlapping symbols and sPUCCH/sPUSCH is transmitted on carrier c on the 6 th and 7 th symbols.

If it is assumed that only PUCCH format 2 overlaps with sPUCCH/sPUSCH on carrier c in subframe i, or PUSCH and PUCCH format 2 overlap with sPUCCH/sPUSCH at the same time, since the pilot of PUCCH format 2 is transmitted on the 2 nd and 6 th symbols in each slot, sPUCCH/sPUSCH overlaps with the pilot of PUCCH, the terminal abandons transmission of sPUCCH/sPUSCH on carrier c in the first slot of subframe i, and only transmits PUSCH/PUCCH, in which the transmission manner is shown in fig. 3.

When there is PUSCH carrying UCI overlapping with sPUCCH/sPUSCH on carrier c in subframe i, the terminal further determines whether sPUCCH/sPUSCH overlaps with the UCI-carrying symbol of PUSCH, because ACK/NACK is mapped on symbols on both sides of pilot, i.e. 3 rd and 5 th symbols, and RI is mapped on symbols on both sides of ACK/NACK, i.e. 2 nd and 6 th symbols, therefore, sPUCCH/sPUSCH transmitted on 6 th and 7 th symbols overlaps with the RI-carrying symbol in PUSCH, the terminal abandons transmission of sPUCCH/sPUSCH on carrier c in the first slot of subframe i, and only PUSCH is transmitted, the transmission mode is as shown in fig. 3.

Optionally, the method 1-2 is applicable to when the first uplink channel is an uplink shared channel or an uplink control channel (for example, PUCCH format 2 or 4 or 5) that does not use a time domain orthogonal sequence, or the first uplink channel carries UCI (may be any UCI or a fixed UCI). Of course, application to all cases other than the above cases is not excluded to achieve a uniform processing manner for all cases.

In the second case: the determining and transmitting the uplink channel to be transmitted in the time unit i by the time node at the time before the time unit i may specifically include the following steps:

mode 2-1: determining to transmit the second uplink channel in the time unit i; i.e. the first uplink channel is abandoned to be transmitted (i.e. the first uplink channel is not transmitted at any time in the time unit i, i.e. the transmission is abandoned from the starting time of the time unit i, but if the first uplink channel occupies a plurality of time units for transmission, the first uplink channel can be transmitted if the first uplink channel does not overlap with the second uplink channel or does not satisfy the condition of being abandoned), and only the second uplink channel is transmitted.

Mode 2-2: determining to transmit an uplink control channel of the first uplink channel and the second uplink channel in the time unit i; i.e. abandons the transmission of the uplink shared channel.

Mode 2 to 3: determining an uplink channel carrying UCI in the first uplink channel and the second uplink channel; determining an uplink channel for transmitting the UCI in the time unit i; if a plurality of uplink channels bearing UCI exist, determining the uplink channel bearing high-priority UCI from the uplink channels bearing UCI; determining the uplink channel carrying the high-priority UCI in the time unit i; further, if a plurality of uplink channels carrying high-priority UCI exist, the mode 2-1 and/or the mode 2-2 are reused for selection, and the uplink channels which are not selected are abandoned.

Modes 2 to 4: determining that the first uplink channel is an uplink shared channel or an uplink control channel not using a time domain orthogonal sequence (for example, PUCCH format 2 or 4 or 5, without excluding other subsequently defined uplink control channels not using a time domain orthogonal sequence) or an uplink channel carrying UCI (which may be any UCI or a fixed UCI); judging whether the position of the overlapped symbol is the position of a pilot symbol or a bearing UCI symbol of the first uplink channel; if yes, determining to transmit the second uplink channel in the time unit i, namely abandoning to transmit the first uplink channel; and if not, the symbols which are overlapped with the second uplink channel in the first uplink channel are punched, and the first uplink channel and the second uplink channel which are punched in the time unit i are determined to be transmitted.

Specifically, in the second case, as shown in fig. 5, in the second embodiment, when the PUSCH/PUCCH in the subframe i overlaps with the sPUCCH/sPUSCH using the sTTI with the length of 3 symbols transmitted on the 1 st to 3 rd symbols in the first slot of the subframe i, on the carrier c. Assuming that the receiving time of the DL grant/UL grant triggering sPUCCH/sPUSCH transmission is far away from the transmission start time of the first slot of the subframe i, the terminal may determine that sPUCCH/sPUSCH exists on the carrier c on the 1 st to 3 rd symbols in the first slot of the subframe i before the first slot of the subframe i starts.

The terminal may adopt the above mode 2-1, as shown in fig. 6, the terminal abandons transmission of PUSCH/PUCCH on carrier c in the first slot of subframe i, and only transmits sPUCCH/sPUSCH, that is, PUSCH/PUCCH is not transmitted at any time in the first slot of subframe i, and if there is no overlap with sTTI in the second slot, it may transmit in the second slot.

The terminal may adopt the above mode 2-2, where the terminal transmits PUCCH and sPUCCH on carrier c in the first slot in subframe i, abandons to transmit PUSCH and sPUCCH, and further selects to transmit sPUCCH and/or selects a channel carrying high-priority UCI if PUCCH and sPUCCH exist at the same time, or transmits both channels at the same time.

The terminal may adopt the above-mentioned mode 2-3, and transmit the uplink channel carrying the UCI on the carrier c in the first slot in the subframe i, for example, assuming that there are PUSCH not carrying the UCI and sPUCCH carrying the UCI in the subframe i, then select sPUCCH carrying the UCI, and abandon transmission of PUSCH not carrying the UCI. For another example, assuming that there are PUCCH carrying UCI and sPUSCH not carrying UCI in subframe i, the PUCCH carrying UCI is selected to be transmitted, and transmission of sPUSCH not carrying UCI is abandoned. For another example, assuming that PUCCH and sPUCCH exist in subframe i, a sPUCCH is further selected for transmission and/or a channel carrying high-priority UCI is selected, or both channels are transmitted simultaneously. For another example, assuming that there are PUSCH with UCI carrying UCI and sPUSCH carrying UCI in subframe i, a channel carrying sPUSCH and/or a channel carrying high priority UCI is further selected for transmission, or both channels are simultaneously transmitted.

The terminal can adopt the above mode 2-4, and the terminal judges whether the sUCCH/sUSCH is overlapped with the pilot symbols of the PUSCH/PUCCH or not; if only the PUSCH and the sUCCH/sUSCH are overlapped on the carrier c in the subframe i, or only the PUCCHs/sUSCHs are overlapped on the PUCCHs/sUSCHs, or both the PUSCH and the PUCCHs format4 or 5 are overlapped on the sUCCHs/sUSCHs, because the pilot frequency of the PUSCH and the PUCCHs format4 or 5 is transmitted on the 4 th symbol in each slot, the sUCCH/sUSCH is not overlapped with the pilot frequency of the PUSCH/PUCCH, the terminal punches 1 to 3 symbols on the PUSCH/PUCCH on the carrier c in the first slot in the subframe i, namely the uplink channel transmitted by using the length of the first transmission time interval TTI takes the overlapped symbols into consideration when carrying out channel coding and rate matching, loses or sets zero the information which should be mapped to the overlapped symbols when carrying out resource mapping, carries out normal mapping and transmission on other non-overlapped symbols, and transmits the sCCCH/USCH on the 1 to 3 symbols, the transmission pattern is shown in fig. 7.

If it is assumed that only PUCCH format 2 overlaps with sPUCCH/sPUSCH on carrier c in subframe i, or PUSCH and PUCCH format 2 overlap with sPUCCH/sPUSCH at the same time, since the pilot of PUCCH format 2 is transmitted on the 2 nd and 6 th symbols in each slot, sPUCCH/sPUSCH overlaps with the pilot of PUCCH, the terminal abandons transmission of sPUCCH/sPUSCH on carrier c in the first slot of subframe i, and only transmits PUSCH/PUCCH, with the transmission mode shown in fig. 8.

The second method comprises the following steps: and determining whether the uplink channel needing to be transmitted in the time unit i is not concerned before the time unit i or not and whether the terminal can determine that the second uplink channel exists or not based on the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i. Specifically, the method comprises the following steps:

Wherein, the determining and transmitting the uplink channel to be transmitted in the time unit i based on the time node specifically includes:

Specifically, in this embodiment, it is not concerned whether the terminal can determine whether sPUCCH/sPUSCH transmission exists in the first slot of the subframe i before the first slot of the subframe i is transmitted, and when the terminal determines that sPUCCH/sPUSCH overlaps with PUCCH/PUSCH in the first slot of the subframe i, the terminal determines whether sPUCCH/sPUSCH overlaps with a pilot symbol of PUSCH/PUCCH or a symbol carrying UCI, which is the same as the method 1-2 in the first method in the specific process, as shown in fig. 4, the terminal determines whether sPUCCH/sPUSCH overlaps with a pilot symbol of PUSCH/PUCCH. If it is assumed that there is only PUSCH on carrier c overlapping with sPUCCH/sPUSCH in subframe i, or only the PUCCH format4 or 5 is overlapped with sUCCH/sUSCH, or when the PUSCH and the PUCCH format4 or 5 are overlapped with the sPUCCH/sUSCH, since the pilot of PUSCH and PUCCH format4 or 5 is transmitted on the 4 th symbol in each slot, therefore, the pilot frequencies of the sPCH/sUSCH and the PUSCH/PUCCH are not overlapped, the terminal punches the PUSCH/PUCCH on the 6 th and 7 th symbols on the carrier c in the first slot of the subframe i, i.e. the uplink channel transmitted using the first TTI length of the transmission time interval is considered for the overlapping symbols when channel coding and rate matching, when the resource mapping is carried out, the information which should be mapped to the overlapped symbols is lost or set to zero, normal mapping and transmission is performed on other non-overlapping symbols and sPUCCH/sPUSCH is transmitted on carrier c on the 6 th and 7 th symbols.

After the terminal judges whether the sPUCCH/sUSCH is not overlapped with the pilot symbols of the PUSCH/PUCCH or the symbols carrying the UCI, the terminal can determine the uplink channel needing to be transmitted in the time unit i based on the time node besides punching the first channel.

Specifically, if the terminal cannot determine that sPUCCH/sPUSCH exists on the carrier c in the first slot of the subframe i before the first slot of the subframe i starts, the terminal knows that sPUCCH/sPUSCH exists on the carrier c, and the PUSCH/PUCCH already starts transmission in the first slot of the subframe i. The terminal determines to transmit only PUSCH/PUCCH on carrier c in the first slot of subframe i.

If the terminal can determine that sPUCCH/sPUSCH is present on carrier c in the first slot of subframe i before the start of the first slot of subframe i, the terminal may relinquish transmission of PUSCH/PUCCH on carrier c in the first slot of subframe i, transmit sPUCCH/sPUSCH only, i.e., PUSCH/PUCCH is not transmitted at any time in the first slot of subframe i, and may transmit in the second slot if there is no overlap with sTTI in the second slot.

Or, the terminal transmits the PUCCH and sPUCCH on the carrier c in the first slot of the subframe i, abandons transmission of the PUSCH and sPUCCH, and further selects transmission of the sPUCCH and/or selects a channel carrying high-priority UCI if the PUCCH and sPUCCH exist simultaneously, or transmits both channels simultaneously.

Or, the terminal transmits the uplink channel carrying the UCI on the carrier c in the first slot of the subframe i, for example, assuming that there are PUSCH not carrying the UCI and sPUCCH carrying the UCI in the subframe i, the sPUCCH carrying the UCI is selected to be transmitted, and the PUSCH not carrying the UCI is abandoned to be transmitted. For another example, assuming that there are PUCCH carrying UCI and sPUSCH not carrying UCI in subframe i, the PUCCH carrying UCI is selected to be transmitted, and transmission of sPUSCH not carrying UCI is abandoned. For another example, assuming that PUCCH and sPUCCH exist in subframe i, a sPUCCH is further selected for transmission and/or a channel carrying high-priority UCI is selected, or both channels are transmitted simultaneously. For another example, assuming that there are PUSCH carrying UCI and sPUSCH carrying UCI in subframe i, a channel carrying sPUSCH and/or a channel carrying high priority UCI is further selected for transmission, or both channels are transmitted simultaneously.

Further, because the above transmission method may cause some uplink channels in the first uplink channel and/or the second uplink channel to be not transmitted or punctured, if the uplink channels that are not transmitted or punctured carry UCI, the UCI carried on the uplink channels that are not transmitted or punctured needs to be transferred, so that, in the step: after determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position, the method in this embodiment further includes the following steps:

The method specifically includes at least one of the following ways:

Specifically, in this embodiment, as shown in fig. 3, the terminal determines that only PUSCH/PUCCH needs to be transmitted on carrier c in the first slot of subframe i, and abandons transmitting sPUCCH/sPUSCH on carrier c in the 6 th and 7 th symbols of the first slot of subframe i. UCI carried on the sPCH/sUSCH can be transferred to PUSCH/PUCCH for transmission according to the predetermined rule. For example: and by adopting the mode A, all UCI are directly transferred to the PUSCH/PUCCH for transmission. Or adopting the mode B, and directly transferring to the PUSCH/PUCCH for transmission if the UCI is ACK/NACK and/or SR according to the UCI type. Or adopting a mode C, when the UCI contains P-CSI, directly discarding the P-CSI, or discarding the P-CSI contained in the UCI if the PUSCH/PUCCH carries the P-CSI, or transferring the P-CSI contained in the UCI to the PUSCH/PUCCH for transmission if the PUSCH/PUCCH does not carry the P-CSI. Or in a mode D, if there is PUSCH and PUCCH on carrier c (that is, carrier c is PCC), one of the carriers is selected to carry the UCI (for example, an uplink control channel is selected), or P-CSI in the UCI is transferred to PUSCH for transmission, and ACK/NACK and/or SR of the UCI is transferred to PUCCH for transmission. Or adopting the mode E, if there are multiple PUSCHs on multiple carriers simultaneously in the subframe i, when there is a PUSCH on the PCC, selecting a PUSCH on the PCC to carry the UCI, and when there is no PUSCH on the PCC, selecting a PUSCH on an SCC with a minimum carrier number where there is a PUSCH to carry the UCI. Or in the mode F, if the PUSCH selected according to the rule is the PUSCH permitted by the RAR, the UCI is not transmitted.

Specifically, in this embodiment, as shown in fig. 4, the pilots of the sPUCCH/sPUSCH and the PUSCH/PUCCH are not overlapped, the terminal performs puncturing on the PUSCH/PUCCH on the 6 th and 7 th symbols in the first slot in the subframe i on the carrier c, and transmits the sPUCCH/sPUSCH on the carrier c on the 6 th and 7 th symbols, and the UCI carried on the PUCCH/PUSCH is transferred to the sPUCCH/sPUSCH for transmission according to the above rule. For example: and by adopting the mode A, all UCI are directly transferred into the sUSCH/sUCCH for transmission. Or adopting the mode B, if the UCI is ACK/NACK and/or SR, directly transferring to the sUSCH/sUCCH for transmission. Or in the mode C, when the UCI includes P-CSI: directly dropping the P-CSI, or discarding the P-CSI contained in the UCI if the P-CSI is carried in the sUSCH/sUCCH, or transferring the P-CSI contained in the UCI to the sUSCH/sUCCH for transmission if the P-CSI is not carried in the sUSCH/sUCCH. Or in a mode G, if there are sPUSCH and sPUCCH on a carrier c (i.e. the carrier c is PCC), one of them is selected to carry the UCI (for example, an uplink control channel is selected), or P-CSI in the UCI is transferred to sPUSCH for transmission, and ACK/NACK and/or SR of the UCI is transferred to sPUCCH for transmission. Or in a mode H, if a plurality of sPCHs/sUSCHs exist in a plurality of sTTIs in the subframe i, selecting the first or the last to bear the UCI. Or adopting a mode I, if a plurality of sPCCHs/sPCHs exist in a plurality of sTTIs in a subframe I, selecting one sPCCH/sPCH which carries P-CSI by itself to carry P-CSI in the UCI, if no sPCCH/sPCH which carries P-CSI by itself exists, selecting the first or the last sPCCH/sPCH to carry P-CSI in the UCI, selecting one sPCCH/sPCH which carries ACK/NACK and/or SR by itself to carry ACK/NACK and/or SR (the uplink channel selected by the P-CSI can be the same as or different from the uplink channel selected by the P-CSI, if different, the channel is equivalent to selecting a plurality of channels which are respectively used for carrying different UCIs), if no sPCCH/sPCH which carries ACK/NACK and/or SR by itself exists, selecting the first or the last sPCCH/sPCH to carry ACK/NACK and/or SR by itself, if there are a plurality of channels satisfying the above condition, selecting the first or last channel among the plurality of channels satisfying the above condition for carrying the corresponding UCI. Or in a mode J, if multiple spuuschs simultaneously exist on multiple carriers in the overlapping sTTI in the subframe i, when spuusch exists on the PCC, the spuusch on the PCC is selected to carry the UCI, and when spuusch does not exist on the PCC, the spuusch on the SCC with the smallest carrier number where spuusch exists is selected to carry the UCI. Or in a mode F, if the sUSCH selected according to the rule is the sUSCH permitted by the corresponding RAR, the UCI is not transmitted.

Based on the same inventive concept, the embodiment of the present invention provides an apparatus, and the specific implementation of the apparatus may refer to the description of the method embodiment, and repeated descriptions are omitted, as shown in fig. 9, the apparatus mainly includes:

a first determining module 901, configured to determine that there exists a first uplink channel transmitted using a first TTI length and a second uplink channel transmitted using a second TTI length in time unit i, where the first uplink channel and the second uplink channel overlap in time;

a first obtaining module 902, configured to obtain a time node that determines that the second uplink channel exists in the time unit i; and/or obtaining the overlapping symbol position of the second uplink channel and the first uplink channel in the time unit i;

a second determining module 903, configured to determine, based on the time node and/or the overlapping symbol position, an uplink channel that needs to be transmitted in the time unit i, and perform transmission.

if yes, determining to transmit the first uplink channel in the time unit i;

if yes, determining to transmit the second uplink channel in the time unit i;

In a possible embodiment, the apparatus further comprises:

Based on the same inventive concept, an embodiment of the present invention provides an apparatus, and specific implementation of the apparatus may refer to descriptions in the method embodiment, and repeated details are not repeated, as shown in fig. 10, the apparatus mainly includes a processor 1011, a memory 1012, and a transceiver 1013, where the transceiver 1013 receives and transmits data under the control of the processor 1011, the memory 1012 stores a preset program, the processor 1011 reads the program in the memory 1012, and executes the following processes according to the program:

the processor 1011 determines that there is a first uplink channel transmitted using a first TTI length and a second uplink channel transmitted using a second TTI length in time unit i, the first uplink channel and the second uplink channel overlapping in time;

processor 1011 obtains a time node determining that the second uplink channel exists in the time unit i; and/or

the processor 1011 determines the uplink channel to be transmitted in the time unit i based on the time node and/or the overlapping symbol position, and transmits the uplink channel.

Where in fig. 10 the bus architecture may include any number of interconnected buses and bridges, in particular one or more of the processors 1011 represented by the processor 1011 and various circuits of the memory represented by the memory 1012 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1013 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other devices over a transmission medium. The processor 1011 is responsible for managing the bus architecture and general processing, and the memory 1012 may store data used by the processor 1011 in performing operations.

In a possible embodiment, when the time node is a time in the time unit i, the processor 1011 determines to transmit the first uplink channel in the time unit i.

In a possible embodiment, when the time node is a time in the time unit i, the processor 1011 is specifically configured to:

if yes, determining to transmit the first uplink channel in the time unit i;

In a possible embodiment, when the time node is a time before the time unit i, the processor 1011 determines to transmit the second uplink channel in the time unit i.

In a possible embodiment, when the time node is a time before the time unit i, the processor 1011 determines that the uplink control channel of the first uplink channel and the second uplink channel is transmitted in the time unit i.

In a possible implementation manner, when the time node is a time before the time unit i, the processor 1011 is specifically configured to:

if yes, determining to transmit the second uplink channel in the time unit i;

In a possible embodiment, the processor 1011 is specifically configured to:

In a possible embodiment, the processor 1011 is specifically configured to perform at least one of the following:

In a possible embodiment, the processor 1011 is specifically configured to:

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A method of data transmission, comprising:

determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI length in time unit i, the first uplink channel and the second uplink channel overlapping in time; wherein the first transmission time interval, TTI, length is greater than the second transmission time interval, TTI, length;

2. The method of claim 1, wherein the time node is a time in the time unit i or the time node is a time before the time unit i.

3. The method according to claim 2, wherein when the time node is a time in the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

and determining to transmit the first uplink channel in the time unit i.

4. The method according to claim 2, wherein when the time node is a time in the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

if yes, determining to transmit the first uplink channel in the time unit i;

5. The method according to claim 2, wherein when the time node is a time before the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

and determining to transmit the second uplink channel in the time unit i.

6. The method according to claim 2, wherein when the time node is a time before the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

7. The method according to claim 2, wherein when the time node is a time before the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

8. The method according to claim 2, wherein when the time node is a time before the time unit i, the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

if yes, determining to transmit the second uplink channel in the time unit i;

9. The method according to claim 1, wherein the determining and transmitting the uplink channel that needs to be transmitted in the time unit i based on the time node and/or the overlapping symbol position specifically includes:

10. The method according to claim 9, wherein the determining, based on the time node, the uplink channel that needs to be transmitted in the time unit i and transmitting the uplink channel includes:

11. The method of claim 1,

12. The method of claim 1, wherein after the determining that there is a first uplink channel transmitted using a first transmission time interval, TTI, length and a second uplink channel transmitted using a second transmission time interval, TTI, length in time unit i, the method further comprises:

13. The method according to any of claims 1-12, wherein after said determining and transmitting an uplink channel that needs to be transmitted in said time unit i based on said time node and/or said overlapping symbol position, the method further comprises:

14. The method as claimed in claim 13, wherein the transferring the UCI on the third uplink channel to the fourth uplink channel determined to be transmitted or not punctured from the first uplink channel and/or the second uplink channel according to a preset rule includes at least one of the following manners:

15. The method according to claim 12, wherein the obtaining of the time node that determines that the second uplink channel exists in the time unit i specifically includes:

16. An apparatus, comprising:

a first determining module, configured to determine that there exists a first uplink channel transmitted using a first TTI length and a second uplink channel transmitted using a second TTI length in time unit i, where the first uplink channel and the second uplink channel overlap in time; wherein the first transmission time interval, TTI, length is greater than the second transmission time interval, TTI, length;

17. The apparatus of claim 16, wherein the time node is a time in the time unit i or the time node is a time before the time unit i.

18. The apparatus of claim 17, wherein the second determining module is specifically configured to:

19. The apparatus of claim 17, wherein the second determining module is specifically configured to:

if yes, determining to transmit the first uplink channel in the time unit i;

20. The apparatus of claim 17, wherein the second determining module is specifically configured to:

21. The apparatus of claim 17, wherein the second determining module is specifically configured to:

22. The apparatus of claim 17, wherein the second determining module is specifically configured to:

23. The apparatus of claim 17, wherein the second determining module is specifically configured to:

if yes, determining to transmit the second uplink channel in the time unit i;

24. The apparatus of claim 16, wherein the second determining module is specifically configured to:

25. The apparatus of claim 24, wherein the second determining module is specifically configured to:

26. The apparatus as recited in claim 16,

27. The apparatus as recited in claim 16, wherein said apparatus further comprises:

28. The apparatus of any one of claims 16-27, wherein the apparatus further comprises:

29. The apparatus as claimed in claim 28, wherein the transferring module transfers UCI on the third uplink channel to a fourth uplink channel determined to be transmitted or not punctured in the first uplink channel and/or the second uplink channel according to a preset rule in at least one of the following manners:

30. The apparatus as claimed in claim 28, wherein said obtaining module is specifically configured to:

31. An apparatus comprising a processor, a memory and a transceiver, wherein the transceiver receives and transmits data under the control of the processor, and wherein the memory stores a predetermined program, wherein the processor, when reading the program in the memory, implements the steps of the method as claimed in any one of claims 1 to 15.