CN109156017B

CN109156017B - Method and terminal for transmitting signals

Info

Publication number: CN109156017B
Application number: CN201680085593.3A
Authority: CN
Inventors: 沈兴亚; 铁晓磊; 花梦; 焦淑蓉; 胡文权
Original assignee: Huawei Technologies Co Ltd
Current assignee: Chengdu jiaozi Xinxing Financial Investment Group Co.,Ltd.
Priority date: 2016-05-12
Filing date: 2016-05-12
Publication date: 2020-12-15
Anticipated expiration: 2036-05-12
Also published as: WO2017193351A1; CN109156017A

Abstract

A method of transmitting a signal is proposed, the method comprising: determining a target channel to be transmitted in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period, wherein the signal to be transmitted comprises: at least one of a signal carried by the first channel over a current time period, the first DMRS, a signal carried by the second channel over a current time period, or the second DMRS, wherein a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel; and transmitting at least one of a signal borne on the target channel or a DMRS corresponding to the target channel in the current time period. In this way, the channel capable of occupying the current transmission resource for signal transmission is determined among the channels with resource conflict, so that the interference among the channels is avoided.

Description

Method and terminal for transmitting signals

Technical Field

The present invention relates to the field of communications, and in particular, to a method and a terminal for transmitting signals in the field of communications.

Background

The delay of a data packet is an important index for evaluating the network performance, and a shorter delay is a target for designing a Long Term Evolution (Long Term Evolution, abbreviated as "LTE"). The delay of the data packet not only affects the response time of the system, but also indirectly affects the throughput of the system. HyperText Transfer Protocol ("HTTP")/Transmission Control Protocol ("TCP") is the mainstream application and transport layer Protocol in the internet today. A typical HTTP message size is from a few tens of Kbytes to 1 Mbyte. In this context, the TCP slow start period is an important component of the packet transmission period. When TCP is started slowly, the throughput of the system is limited by the delay, so reducing the delay can improve the average throughput of the system. In addition, in order to reduce the buffer space of the data link layer (L2 layer), a Round Trip Time (RTT) needs to be reduced, and the only way to reduce the RTT is to reduce the delay.

Similarly, reducing the time delay can improve the utilization efficiency of resources. For some data packets transmitted periodically, the lower data packet time delay can increase the transmission times of the data packets in a unit period, thereby improving the robustness of data transmission; and under the same Quality of Service (QoS) requirement, a higher Block Error Rate (BLER) can be used, which means that less resources are used for transmission.

Many future time delay emergency applications, such as remote control or autonomous driving, augmented reality, etc., require reduced time delay. So SI "FS _ LTE _ LATRED" was approved on the 3GPP RAN 67-time congress of month 6 in 2015. This SI mainly studies short tti (short tti) and reduces processing delay in the physical layer. The Transmission Time Interval (TTI) refers to a Time Interval of one Transmission, and a typical LTE TTI (long TTI) is 1ms in length. While the length of the short TTI may range from 0.5ms to 1 symbol long. The Short TTI is not limited thereto, but a Short TTI can be considered as a relative concept, and if there is emergency traffic to be scheduled within a time that has already occurred, then scheduling a relatively Short TTI can be referred to as a Short TTI, and the original scheduling can be referred to as a long TTI.

High-pass it is mentioned in R1-163069 that when there is emergency traffic that needs to be scheduled in the case that the channel corresponding to the long TTI transmission is already scheduled, there is inevitably a collision between the short TTI transmission and the long TTI transmission. To address this collision, the high pass mentions sending the information carried on the channel corresponding to the short TTI transmission preferentially.

When the channel and the corresponding reference signal transmitted by the short TTI and the channel and the corresponding reference signal transmitted by the long TTI are simultaneously transmitted in the time domain, and may occupy the same frequency domain resource, i.e., when a collision occurs, the priorities of different channels are different under the condition of carrying different signals, and if only the priority of the transmission of the short TTI is ensured, the process of transmitting the long TTI signal will be seriously affected.

Disclosure of Invention

In view of this, embodiments of the present invention provide a method and a terminal for transmitting a signal, which, when performing signal transmission through a short TTI transmission mode and a long TTI transmission mode, determine, for a channel with resource conflict, a channel capable of occupying a current transmission resource for signal transmission according to a signal type of a signal to be transmitted, which is carried by the channel on the current transmission resource, so as to solve an interference problem between channels with resource conflict during signal transmission.

In a first aspect, a method for transmitting a signal is provided, where the method is applied to a first channel or a first demodulation reference signal (DMRS) corresponding to the first channel, and a scenario where a collision occurs on a current time period with a second channel or a second DMRS corresponding to the second channel, where a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel, and the method includes:

determining a target channel to be transmitted in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period, wherein the signal to be transmitted comprises: at least one of a signal carried by the first channel over a current time period, the first DMRS, a signal carried by the second channel over a current time period, or the second DMRS;

and transmitting at least one of a signal borne on the target channel or a DMRS corresponding to the target channel in the current time period.

Therefore, in the method for transmitting a signal according to the embodiment of the present invention, when a signal is transmitted in a short TTI transmission manner and a long TTI transmission manner at the same time, in a channel where resource collision occurs on a time domain resource or a time frequency resource, a channel that can occupy the current transmission resource for signal transmission is determined according to a signal carried by the channel on the current transmission resource, so that interference between channels where resource collision occurs during signal transmission is avoided.

And the first DMRS is a DMRS corresponding to the first channel, and the second DMRS is a DMRS corresponding to the second channel.

Optionally, the transmission time comprises at least one of a transmission time interval TTI or a consecutive plurality of TTIs.

It should be understood that the length of the transmission time herein may be the length of a transmission time interval TTI, or the total length of a plurality of consecutive TTIs bundled in a TTI bundling transmission manner, or other specified time length.

It should also be understood that, in the method for transmitting a signal according to the embodiment of the present invention, when resource collision occurs between channels, for example, collision occurs on time domain resources or time frequency resources, a signal carried on a channel determined as a target channel or a DMRS corresponding to the target channel may occupy a current resource to transmit, while a signal carried on another channel or a DMRS corresponding to the signal may be transmitted on the current resource at a lower power, or the signal or the DMRS corresponding to the signal may not be transmitted in the current scheduling but wait for a next scheduling.

It should also be understood that, when signal transmission is performed between the terminal and the base station, the time-frequency resource occupied by the first channel and the time-frequency resource occupied by the second channel may use a frequency division multiplexing manner, or the first channel and the second channel occupy the same frequency domain resource, which is not limited in the present invention.

In addition, after the signal carried on the target channel and/or the DMRS corresponding to the target channel is transmitted, the user equipment may increase the transmission power of the signal on the remaining resources of the target channel.

It should be noted that the first channel comprises a first control channel and/or a first data channel and the second channel comprises a second control channel and/or a second data channel. The Control Channel may include a Physical Uplink Control Channel (PUCCH), and the data Channel may include a Physical Uplink Shared Channel (PUSCH).

Optionally, taking the control channel as a PUCCH and the data channel as a PUSCH as an example, two channels that collide in the current time period may be determined according to the table, one of the two channels is selected as a target channel, and a signal carried on the target channel and/or a DMRS corresponding to the target channel is transmitted in the current time period.

Optionally, as another embodiment, in a case that the first channel is a first control channel, the determining, according to a signal type of a signal to be transmitted in a current time period, a current target channel in the first channel and the second channel includes:

and if the first DMRS is included in the signal to be transmitted, determining the first channel as the target channel.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the determining, according to a signal type of a signal to be sent in a current time period, a current target channel in the first channel and the second channel includes:

and if the first DMRS is included in the signal to be transmitted, determining the second channel as the target channel, and transmitting the first DMRS before the current time period or after the current time period.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, determining, according to a signal type of a signal to be transmitted in a current time period, a current target channel in the first channel and the second channel includes:

and if the signal to be transmitted is other than the first DMRS, determining the first channel as the target channel.

The signal to be transmitted carried on the second control channel can be transmitted when the next scheduling is carried out; alternatively, a signal carried on the second control channel, e.g., a signal carried on the second PUCCH, may be transmitted over the current time period at a power level in equation (1):

wherein the content of the first and second substances,

denotes power, j is a cell number, i is a position number of a symbol employed when the UE10 transmits a signal in the jth cell,

is the maximum transmit power of the UE10 in the current cell.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the determining, according to a signal type of a signal to be sent in a current time period, a current target channel in the first channel and the second channel includes:

and if the signal to be transmitted is other than the first DMRS, determining the second channel as the target channel.

The signal to be transmitted carried on the first control channel can be transmitted when the next scheduling is carried out; alternatively, the signal carried on the first control channel, for example, the signal carried on the first PUCCH, may also be transmitted in the current time period according to the power level in equation (2):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

Optionally, as another embodiment, in a case that the first channel is a first data channel, the determining, according to a signal type of a signal to be transmitted in a current time period, a current target channel in the first channel and the second channel includes:

and determining the first channel as the target channel if the signal to be transmitted comprises at least one of an Acknowledgement (ACK) signal, a non-acknowledgement (NACK) signal or the first DMRS carried in the first data channel.

In addition, the DMRS corresponding to the first data channel may be used to demodulate a signal carried on the first data channel, or may be used to demodulate a signal carried on the second channel. That is, the DMRS corresponding to the second channel may not be transmitted, but may be multiplexed with the DMRS corresponding to the first data channel for signal demodulation.

and if the signal to be transmitted comprises at least one of an ACK signal, a NACK signal or a DMRS corresponding to the first data channel carried in the first data channel, determining the second channel as the target channel, and transmitting the at least one of the ACK signal, the NACK signal or the first DMRS carried in the first channel before the current time period or after the current time period.

and if the signal to be transmitted is other than the ACK signal, the NACK signal and the first DMRS which are carried in the first data channel, determining the second channel as the target channel.

The signal to be transmitted carried on the first data channel can be transmitted when the next scheduling is carried out; or the signal carried on the first data channel, for example, the signal carried on the first PUSCH, may also be transmitted at the current time period according to the power in equation (3) or (4):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

Optionally, as another embodiment, when the lengths of the multiple short TTIs are as long as 1 slot of the long TTI, the length of the second control channel is as long as 1 slot of the long TTI, when a resource collision occurs between the second control channel and the first control channel or between the second control channel and the first data channel on the same time domain resource or time frequency domain resource, for example, when the length of the short TTI is 7 symbols or two consecutive short TTIs are a combination of 3 symbols and 4 symbols, the length of the short TTI is as long as 1 slot of the long TTI. The signal carried on the second control channel may be transmitted on the current transmission resource while the symbols on the first control channel and the first data channel are not transmitted, or the signal carried on the first control channel or the first data channel, for example, the signal carried on the first PUSCH may be transmitted on the current time period with the power in equation (10), (11), or (12):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

It should be understood that the first channel may include only the first control channel or the first data channel, or both the first control channel and the first data channel. When the first channel includes both the first control channel and the first data channel, after the target channel is determined in the first channel and the second channel, if the target channel is the first channel, the channel occupying the current time period may be determined again in the first control channel and the first data channel. For example, a control channel first scheme is used.

Likewise, the second channel may include only the second control channel or the second data channel, or both the second control channel and the second data channel. When the second channel includes both the second control channel and the second data channel, after the target channel is determined in the first channel and the second channel, if the target channel is the second channel, the channel occupying the current time period may be determined again in the second control channel and the second data channel. For example, a channel occupying the current time period for signal transmission may be determined from the second control channel and the second data channel according to a signal carried on the second control channel.

Optionally, as another embodiment, in a case that the second channel is determined as a target channel, if a second control channel and a second data channel included in the second channel collide over the current time period, after determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted over the current time period, the method further includes:

determining a second target channel in the second control channel and the second data channel according to the signal type of the signal to be transmitted of the second control channel in the current time period;

the sending, in the current time period, at least one of a signal carried on the target channel or a DMRS corresponding to the target channel includes:

and transmitting at least one of a signal carried on the second target channel or a DMRS corresponding to the second target channel in the current time period.

Optionally, as another embodiment, the determining, according to the signal type of the signal to be transmitted on the second control channel in the current time period, a second target channel in the second control channel and the second data channel includes:

determining that the second data channel is the second target channel if the second control channel includes an ACK signal or a NACK signal in the signal to be transmitted in the current time period, and the second data channel includes the ACK signal or the NACK signal in the signal transmitted in the current time period,

or determining the second control channel as the second target channel.

Taking sPUCCH and sPUSCH as an example, when a UE needs to simultaneously transmit a signal carried on sPUCCH and a signal carried on sPUSCH, if the UE supports simultaneous transmission of the signal carried on sPUCCH and the signal carried on sPUSCH, the UE simultaneously transmits sPUCCH and sPUSCH. When the transmission power of the UE is limited, the signal carried on the sPUCCH is preferentially sent, and the signal carried on the sPUCCH is determined according to formula (13) and sent in the current time period:

when the UE needs to transmit the signal carried on the sPUCCH and the signal carried on the sPUSCH at the same time, but the UE does not support the simultaneous transmission of the signal carried on the sPUCCH and the signal carried on the sPUSCH, the UE may preferentially transmit the signal carried on the sPUCCH, and then transmit the signal carried on the sPUSCH after the signal on the sPUCCH is completely transmitted; or the signal carried on the sPUSCH may be postponed until the next slot, or the next available subframe where no signal carried on the PUCCH needs to be transmitted. The UE10 may preferentially transmit the signal carried on the sPUSCH, and the signal carried on the sPUSCH includes an ACK signal or a NACK signal carried on the sPUCCH, that is, the ACK signal or the NACK signal carried on the sPUCCH may be carried and transmitted by the sPUSCH.

In a second aspect, a terminal is provided for performing the method of the first aspect or any possible implementation manner of the first aspect. The terminal is applied to a first channel or a first demodulation reference signal (DMRS) corresponding to the first channel, and a scenario where a collision occurs on a current time period with a second channel or a second DMRS corresponding to the second channel, where a length of transmission time corresponding to the first channel is greater than a length of transmission time corresponding to the second channel, and the processor is configured to:

the transmitter is configured to transmit, in the current time period, at least one of a signal carried on the target channel or a DMRS corresponding to the target channel.

Optionally, as another embodiment, in a case that the first channel is a first control channel, the determining module is specifically configured to:

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the determining module is specifically configured to:

and if the first DMRS is included in the signal to be transmitted, determining the second channel as the target channel, and transmitting the first DMRS by the transmitting module before the current time period or after the current time period.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, the determining module is specifically configured to:

and if the signal to be sent in the current time period is other signals except the DMRS corresponding to the first physical uplink control channel, determining that the target channel is the first channel.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the determining module is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first data channel, the determining module is specifically configured to:

and if the signal to be transmitted comprises at least one of an ACK signal, a NACK signal or a DMRS corresponding to the first data channel carried in the first data channel, determining the second channel as the target channel, and the transmitting module transmits the at least one of the ACK signal, the NACK signal or the first DMRS carried in the first channel before the current time period or after the current time period.

Optionally, as another embodiment, in a case that the second channel is determined as a target channel, if the second channel includes a second control channel and a second data channel, and the second control channel and the second data channel collide with each other over the current time period, after the determining module determines, according to a signal type of a signal to be transmitted over the current time period, a current target channel in the first channel and the second channel, the determining module is further configured to:

determining a second target channel in the second control channel and the second data channel according to the signal type of the signal to be transmitted of the second control channel in the current time period, wherein the transmitting module is specifically configured to:

Optionally, as another embodiment, the determining module is specifically configured to:

or determining the second control channel as the second target channel.

Optionally, as another embodiment, the transmission time includes at least one of a transmission time interval TTI or a consecutive plurality of TTIs.

In a third aspect, a terminal is provided that includes a processor and a transmitter coupled to the processor. The terminal is applied to a first channel or a first demodulation reference signal (DMRS) corresponding to the first channel, and a scenario in which a second DMRS corresponding to a second channel or the second channel collides in a current time period, wherein the length of a transmission time corresponding to the first channel is greater than the length of a transmission time corresponding to the second channel, and the processor is coupled to the processor and is configured to:

or determining the second control channel as the second target channel.

In a fourth aspect, there is provided a computer readable medium for storing a computer program comprising instructions for carrying out the method of the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, a communication system is provided, which includes a base station and the terminal in any one of the third aspect or the third aspect.

Based on the above technical solution, in the method and the terminal for transmitting a signal according to the embodiments of the present invention, when signal transmission is performed in a short TTI transmission manner and a long TTI transmission manner, in a channel where a resource conflict occurs, a channel that can occupy the current transmission resource for signal transmission is determined according to a signal type of a signal to be transmitted, which is carried by the channel on the current transmission resource, so that interference between channels where a resource conflict occurs in a signal transmission process is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic architecture diagram of an application scenario of an embodiment of the present invention.

Fig. 2 is a flowchart of an embodiment of a method for transmitting a signal.

Fig. 3 is a transmission diagram of a signal carried on sPUCCH and DMRS carried on PUCCH.

Fig. 4 is a schematic diagram illustrating multiplexing of a signal transmitted by using a short TTI and a signal transmitted by using a long TTI on a DMRS carried on a PUSCH.

Fig. 5 is a block diagram of a terminal according to an embodiment of the present invention.

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

Fig. 7 is a schematic configuration diagram of a communication system of an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, shall fall within the scope of protection of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a WiMAX (Universal Mobile telecommunications System, UMTS), or a Worldwide Interoperability for Microwave Access (UMTS) communication System. The embodiment of the present invention is described by taking an LTE communication system as an example.

It should also be understood that in embodiments of the present invention, a Terminal (Terminal), which may be referred to as an access Terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, remote Terminal, mobile device, User Terminal, wireless communication device, User agent, or User Equipment, may communicate with one or more core networks via a radio access network. The terminal device may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, and the like. For convenience of description, the following embodiments will be described by taking a user equipment as an example.

In the embodiment of the present invention, the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or eNodeB) in LTE, but the present invention is not limited thereto, and for convenience of description, the following embodiment will use eNodeB as an example for description.

Fig. 1 is a schematic architecture diagram of an application scenario of an embodiment of the present invention. As shown in fig. 1, the basic network architecture of an LTE communication system may include a base station 20 and at least one wireless terminal, e.g., UE10, UE 11, UE 12, UE 13, UE 14, UE 15, UE 16, and UE 17. As shown in fig. 1, eNodeB 20 is used to provide communication services for at least one wireless terminal from UE10 to UE 17, and access the core network. Any one of the wireless terminals UE10 to UE 17 and eNodeB 20 may include at least one antenna, which is shown in fig. 1 for the case of multiple antennas. Here, communication between the UE10 and the eNodeB 20 is explained as an example.

In this application scenario, when signal transmission is performed between the UE10 and the eNodeB 20, the time-Frequency resource occupied by the channel corresponding to the long TTI and the time-Frequency resource occupied by the channel corresponding to the short TTI may adopt a Frequency Division Multiplexing (FDM) mode, or the channel corresponding to the long TTI and the channel corresponding to the short TTI occupy the same Frequency domain resource, which is not limited in this invention.

It should be understood that a Transmission Time Interval (TTI) refers to a Time Interval of one Transmission, and a typical LTE TTI (long TTI) is 1ms in length. While the short tti (short tti) may range in length from 0.5ms to 1 symbol long. The short TTI is not limited thereto, but can be considered as a relative concept, in which a relatively short TTI is scheduled if there is emergency traffic to be scheduled within a time period that has already occurred, and the former scheduling is referred to as a long TTI. The embodiment of the present invention is not limited thereto.

Fig. 2 is a flowchart of an embodiment of a method for transmitting a signal. UE10 and eNodeB 20 are shown in fig. 2. As shown in fig. 2, the signal transmission flow specifically includes:

at 210, the UE10 determines the current target channel.

The channel transmitted by the short TTI and the channel transmitted by the long TTI are simultaneously transmitted in the current time period, so that a collision occurs in the same time domain resource or time-frequency domain resource, that is, the first channel or the DMRS corresponding to the first channel and the second channel or the DMRS corresponding to the second channel are simultaneously transmitted in the current time period, so that when a collision occurs in the same time domain resource or time-frequency domain resource, the UE10 may determine, according to a signal type of a signal to be transmitted in the current time period, a target channel to be transmitted in the first channel and the second channel, where the signal to be transmitted may include: at least one of a signal carried by the first channel over a current time period, the first DMRS, a signal carried by the second channel over a current time period, or the second DMRS. The length of the transmission time corresponding to the first channel is greater than the length of the transmission time corresponding to the second channel, the first channel comprises a first control channel and/or a first data channel, and the second channel comprises a second control channel and/or a second data channel. The Control Channel may include a Physical Uplink Control Channel (PUCCH), and the data Channel may include a Physical Uplink Shared Channel (PUSCH).

It should be noted that, here, the first DMRS corresponding to the first channel or the second DMRS corresponding to the second channel or the first channel collides with the second DMRS corresponding to the second channel in the current time period, which means that at least one of a signal carried by the first channel in the current time period, the first DMRS, a signal carried by the second channel in the current time period, or the second DMRS needs to be simultaneously transmitted in the current time period, so that a collision occurs in the current time domain resource or time frequency resource. For example, the first DMRS corresponding to the first channel needs to be transmitted in the current time period, and the signal carried on the second channel also needs to be transmitted in the current time period, at this time, the first DMRS and the signal carried on the second channel collide with each other in the current time period, or the first DMRS and the second channel collide with each other in the current time period. For brevity, further description is omitted.

220, the UE10 sends, in the current time period, a signal carried on the target channel and/or a demodulation reference signal DMRS corresponding to the target channel.

230, the base station 20 processes the signal and/or the DMRS.

The base station 20 receives the signal carried on the target channel transmitted by the UE10 at the current time period and performs signal processing on the signal. In the design of introducing short TTI transmission, when the existing normal traffic using long TTI transmission is scheduled and starts to be transmitted, an emergency traffic may occur, so that signal transmission using short TTI transmission is required. At this time, the influence of the signal transmission of the short TTI transmission on the existing long TTI transmission needs to be considered, and the method in the embodiment of the present invention can avoid the interference between the short TTI transmission and the long TTI transmission, and reduce the influence of the short TTI transmission on the long TTI transmission.

Therefore, in the method for transmitting a signal according to the embodiment of the present invention, when signal transmission is performed in a short TTI transmission manner and a long TTI transmission manner, in a channel where a resource conflict occurs, a channel that can occupy the current transmission resource for signal transmission is determined according to a signal type of a signal to be transmitted, which is carried by the channel on the current transmission resource, so that interference between channels where a resource conflict occurs in a signal transmission process is avoided.

Specifically, in 210 and 220, the first channel is a channel corresponding to a long TTI transmission, which includes a first control channel and/or a first data channel, for example, a PUCCH corresponding to the long TTI transmission and/or a PUSCH corresponding to the long TTI transmission, that is, a first PUCCH (denoted as PUCCH) and/or a first PUSCH (denoted as PUSCH); the second channel is a channel corresponding to the short TTI, and includes a second control channel and/or a second data channel, for example, a PUCCH (denoted as sPUCCH) corresponding to the short TTI transmission and/or a PUSCH (denoted as sPUSCH) corresponding to the short TTI transmission, that is, a second PUCCH and/or a second PUSCH. The embodiment of the present invention takes the first control channel as PUCCH, the first data channel as PUSCH, the second control channel as sPUCCH, and the second data channel as sPUSCH as an example for description.

Likewise, the second channel may include only the second control channel or the second data channel, or both the second control channel and the second data channel. When the second channel includes both the second control channel and the second data channel, after the target channel is determined in the first channel and the second channel, if the target channel is the second channel, the channel occupying the current time period may be determined again in the second control channel and the second data channel. For example, a channel capable of occupying the current time period for signal transmission may be determined from the second control channel and the second data channel according to a signal carried on the second control channel.

Specifically, the length of the transmission time corresponding to the first channel is greater than the length of the transmission time corresponding to the second channel, where the length of the transmission time may be the length of a transmission time interval TTI, the total length of a plurality of consecutive TTIs bundled in a TTI bundling transmission manner, or another specified time length. That is, the first channel may be a channel for long TTI transmission, and the second channel may be a channel for short TTI transmission; or the length of the binding TTI occupied by the transmission signal on the second channel is smaller than that occupied by the transmission signal on the first channel, and the transmission time is not limited by the invention. Taking the transmission time as TTI as an example, the TTI length of the first channel is greater than the TTI length of the second channel, the first channel includes PUCCH or PUSCH, and the second channel includes sPUCCH or sPUSCH.

In a system with coexistence of short TTI and long TTI, uplink transmission may occur in the situations of coexistence of sPUCCH and PUCCH, coexistence of sPUCCH and PUSCH, coexistence of sPUSCH and PUCCH, coexistence of sPUSCH and PUSCH, and the like. When the problems of limited Power of communication equipment, limited resources or low Peak to Average Power Ratio (PAPR) required by a system exist, the problems occur when sPUCCH and PUCCH coexist, sPUCCH and PUSCH coexist, sPUSCH and PUCCH coexist, and sPUSCH and PUSCH coexist in the uplink transmission process. The priority of different channels is different, and the priority of Demodulation Reference signals (DMRSs), such as pilot signals, and other data is also different.

Therefore, when signal transmission is performed in a short TTI transmission mode and a long TTI transmission mode simultaneously, in a channel where resource conflict occurs, a channel capable of occupying the current transmission resource for signal transmission is determined according to a signal carried by the channel on the current transmission resource, so that interference between channels where resource conflict occurs in a signal transmission process is avoided.

The uplink channels corresponding to the short TTI transmission and the long TTI transmission are simultaneously transmitted, so that a scenario in which a collision occurs on a time domain resource or a time-frequency domain resource is shown in table one. When transmission resources occupied by signals carried on two different channels, for example occupied sign bits, overlap, a pair of two channels that collide at the current time period may be determined according to the table, one of the two channels is selected as a target channel, and the signal carried on the target channel is transmitted on the current transmission resource.

Watch 1

It should be understood that the target channel is determined in the first channel and the second channel, and may be determined according to a signal carried on the first channel or a demodulation reference signal DMRS corresponding to the first channel. The signal carried on the first channel may include service data, and may also include other Information, such as Uplink Control Information (UCI). The UCI may include at least one of Channel Quality Indication (CQI) information, Acknowledgement (ACK) and non-Acknowledgement (NACK) signals, Rank Indication (RI) and Precoding Matrix Indication (PMI) information. The invention is not limited in this regard.

It should be further understood that, according to the situation when resource collision occurs between channels shown in table one, for example, when collision occurs on time domain resources or time frequency resources, a signal carried on a channel determined as a target channel may occupy a current time domain resource, that is, may be transmitted in a current time period, while a signal carried on another channel or a DMRS corresponding to the signal may be transmitted in the current time period with lower power, or the signal may not be transmitted in the current scheduling, but wait for a next scheduling, or be transmitted in another manner, which is not limited in this invention.

The process of determining the current target channel between the first channel and the second channel is described in detail below with reference to table one. The target channel is determined according to a channel corresponding to the long TTI transmission in the current time period, that is, a signal carried on the first channel or a DMRS corresponding to the first channel, in the channel corresponding to the collided long TTI and the channel corresponding to the short TTI.

Services transmitted using short TTIs and services transmitted using long TTIs may be scheduled in a frequency division multiplexed manner. In this case, the short TTI transmission does not occupy the frequency domain resources of the long TTI, but collision of time domain resources may occur. If the UE10 needs to ensure a sufficiently low PAPR or the power of the UE10 is limited, at this time, the priorities of different channels need to be determined, and the channel that can occupy the time domain resource is determined.

According to the first table, when a DMRS carried on the sPUCCH or a DMRS corresponding to the sPUCCH overlaps a symbol (symbol) occupied by a DMRS carried on the PUCCH or a DMRS corresponding to the PUCCH on a time domain resource, the UE10 determines a target channel according to the DMRS carried on the sPUCCH or the DMRS corresponding to the sPUCCH and the DMRS carried on the PUCCH or the DMRS corresponding to the PUCCH, and if a signal that the UE10 needs to transmit in a current time period includes the DMRS corresponding to the PUCCH, the DMRS carried on the PUCCH and/or the DMRS corresponding to the PUCCH may occupy the overlapped symbol to transmit. That is, in the current time period, since the DMRS corresponding to the PUCCH needs to be transmitted, the current PUCCH is determined as the target channel of the time period, and the UE10 transmits the DMRS corresponding to the PUCCH to the base station 20 in the current time period.

For example, at this time, the DMRS corresponding to the PUCCH may be left in the original position, for example, the 4 th and 11 th symbols in the 1ms subframe are not changed, the sPUCCH needs to avoid the position of the DMRS corresponding to the PUCCH, and the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may be wholly shifted backward by several symbols, or may be transmitted across the symbols of the DMRS corresponding to the PUCCH.

It should be understood that, at this time, puncturing (puncturing) may also be performed on the PUCCH (puncutre), the signal carried on the sPUCCH and/or the DMRS corresponding to the sPUCCH are transmitted in the current time period, and the DMRS corresponding to the PUCCH should be transmitted on one or several symbols before or after the symbol corresponding to the signal carried on the sPUCCH or the symbol occupied by the DMRS corresponding to the sPUCCH. Since the uplink transmission process is performed by the base station 20 to schedule the UE10, the base station 20 knows that short TTI transmission will be performed on some symbols, and it is also known which symbols on the PUCCH are punctured, so the location of the bearer DMRS after shifting (shift) is also clear. After the signal carried on the sPUCCH and/or the DMRS corresponding to the sPUCCH are transmitted, the UE10 may increase the transmission power of the signal on the remaining symbols of the PUCCH channel.

When the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH overlaps the symbol occupied by the signal carried on the PUCCH or the DMRS corresponding to the PUCCH on the time domain resource, and the format of the PUCCH is format 1, format 1a, format 1b, or format 3, if the UE10 determines that the DMRS corresponding to the PUCCH is not transmitted on the symbol in the current time period, that is, other signals except for the DMRS are transmitted, the signal carried on the PUCCH may occupy the symbol to be transmitted. That is, since there is no need to transmit the DMRS corresponding to the PUCCH of format 1, format 1a, format 1b, or format 3 in the current time period, the current PUCCH is determined as the target channel, and the UE10 transmits a signal carried on the PUCCH to the base station 20 in the current time period. Symbols corresponding to signals borne on the spUCCH or symbols corresponding to the DMRS corresponding to the spUCCH can be completely punched, are not transmitted and are transmitted when the next scheduling is carried out; or the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may also be sent in the current time period according to the power in the formula (1):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

At this time, the sPUCCH channel may be repeatedly transmitted in the time domain.

When the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH overlaps the symbol occupied by the signal carried on the PUCCH or the DMRS corresponding to the PUCCH in the time domain, and the format of the PUCCH is format 2, format 2a, format 2b, format 4, or format 5, if the UE10 determines that the DMRS corresponding to the PUCCH is not transmitted on the symbol in the current time period, that is, other signals except for the DMRS are transmitted, the signal carried on the sPUCCH and/or the DMRS corresponding to the sPUCCH may occupy the symbol for transmission. That is, in the current time period, since the DMRS corresponding to the PUCCH in format 2, format 2a, format 2b, format 4, or format 5 is not transmitted, the current target channel is sPUCCH, and the UE10 transmits the signal carried on sPUCCH and/or the DMRS corresponding to sPUCCH to the base station 20 in the current time period. Symbols corresponding to signals carried on the PUCCH can be completely punched, are not transmitted and are transmitted when the next scheduling is carried out; or the signal carried on the PUCCH may also be transmitted in the current time period according to the power in equation (2):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

When the signal carried by the sPUCCH or the DMRS corresponding to the sPUCCH overlaps the symbol occupied by the signal carried on the PUSCH or the DMRS corresponding to the PUSCH on the time domain resource, if the UE10 determines that the DMRS corresponding to the PUSCH is included in the signal transmitted on the symbol in the time period or the ACK signal/NACK signal is included in the signal carried on the PUSCH and transmitted on the symbol, the ACK signal/NACK signal carried on the PUSCH and the DMRS corresponding to the PUSCH may be transmitted on the symbol at this time. That is, in the current time period, since the signal to be transmitted by the UE10 includes the DMRS corresponding to the PUSCH or the ACK signal/NACK signal carried on the PUSCH, the UE10 determines that the current target channel is the PUSCH, and the UE10 may occupy the current time-frequency resource to transmit the ACK signal/NACK signal carried on the PUSCH or the DMRS corresponding to the PUSCH to the base station 20.

It should be understood that the signal carried on the data channel may be general traffic data, or may include a control signal such as an ACK signal or a NACK signal.

For example, if the UE10 includes the DMRS corresponding to the PUSCH in the signal to be transmitted in the current time period, the DMRS corresponding to the PUSCH is reserved at the original position, for example, the 4 th and 11 th symbols in the 1ms subframe do not move, at this time, the sPUCCH or the sPUSCH needs to avoid the symbol position corresponding to the DMRS corresponding to the PUSCH, and the signal carried on the sPUCCH and/or the DMRS corresponding to the sPUCCH may be integrally shifted backward by several symbols or transmitted across symbols occupied by the DMRS corresponding to the PUSCH.

When the signal carried by the sPUSCH or the DMRS corresponding to the sPUSCH overlaps the symbol occupied by the signal carried on the PUSCH or the DMRS corresponding to the PUSCH on the time domain resource, if the UE10 determines that the DMRS corresponding to the PUSCH is included in the signal transmitted on the symbol or the ACK signal/NACK signal is included in the signal carried on the PUSCH and transmitted on the symbol in the time period, the ACK signal/NACK signal carried on the PUSCH and the DMRS corresponding to the PUSCH may be transmitted on the symbol at this time. That is, in the current time period, since the signals to be transmitted by the UE10 include the DMRS corresponding to the PUSCH or the ACK/NACK signal carried on the PUSCH, the UE10 determines that the current target channel is the PUSCH, and the UE10 may occupy the current time-frequency resource to transmit the ACK/NACK signal carried on the PUSCH and the DMRS corresponding to the PUSCH to the base station 20.

For example, if the UE10 includes the DMRS corresponding to the PUSCH in the signal to be transmitted in the current time period, the DMRS corresponding to the PUSCH is reserved at the original position, for example, the 4 th and 11 th symbols in the 1ms subframe do not move, at this time, the sPUCCH or the sPUSCH needs to avoid the symbol position corresponding to the DMRS corresponding to the PUSCH, and the signal carried on the sPUSCH and/or the DMRS corresponding to the sPUSCH may be wholly shifted backward by several symbols, or transmitted across symbols occupied by the DMRS corresponding to the PUSCH.

For another example, if the signal carried on the PUSCH is ACK/NACK, the ACK/NACK carried on the PUSCH is retained at the original position, for example, at the 3 rd, 4 th, and 5 th symbol positions in the 1ms subframe, and the 10 th, 11 th, and 12 th symbols are not moved, at this time, the sPUCCH or the sPUSCH needs to avoid the symbol position corresponding to the ACK signal/NACK signal carried on the PUSCH, and the signal carried on the sPUCCH or the sPUSCH may be wholly shifted backward by several symbols, or transmitted across the 3 rd, 4 th, 5 th symbols or the 10 th, 11 th, and 12 th symbols of the PUSCH.

It should be understood that puncturing may also be performed on the PUSCH at this time, for example, three symbols (for carrying DMRS, and ACK signal/NACK) signals are punctured, an ACK signal/NACK signal is carried on the PUSCH, and the DMRS corresponding to the PUSCH may be transmitted on one or several symbols after the symbol corresponding to the signal carried on sPUCCH or sPUSCH. Since uplink transmission is scheduled by the base station 20 for the UE10, the base station 20 knows which symbols corresponding to the long TTI transmission are punctured since it is known that the short TTI will be transmitted on some symbols, and therefore the locations of the symbols carrying the ACK/NACK signals and the DMRS transmitted after the move are also clear. After the signaling carried on sPUCCH or sPUSCH is completed, the UE10 may increase the transmit power on the remaining symbols of the PUSCH channel.

Optionally, the DMRS corresponding to the PUSCH may be used for demodulation of a signal carried on the PUSCH, and may also be used for demodulation of a signal carried on sPUCCH or sPUSCH.

Specifically, at this time, the DMRS corresponding to the sPUSCH may not be transmitted, but the base station 20 multiplexes the DMRS carried on the PUSCH to demodulate the signal carried on the sPUCCH or sPUSCH transmitted by the UE 10. After the signaling carried on sPUCCH or sPUSCH is complete, the UE10 may increase the transmit power on the remaining symbols of the PUSCH channel.

It should be understood that, at this time, puncturing may also be performed on the PUSCH, and the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may occupy the current time domain resource to transmit, and then the DMRS carried on the PUSCH is transmitted on one or several symbols before or after the symbol corresponding to the signal carried on the sPUCCH or the symbol occupied by the DMRS corresponding to the sPUCCH. Since the uplink transmission process is performed by the base station 20 to schedule the UE10, the base station 20 knows that short TTI transmission will be performed on some symbols, and it is also known which symbols on the PUSCH are punctured, so the location of the bearer DMRS after moving is also clear. After the signaling carried on the sPUCCH is completed, the UE10 may increase the transmit power on the remaining symbols of the PUSCH channel. The process of determining the target channel between the sPUSCH and the PUSCH is similar to the process of determining the target channel between the sPUCCH and the PUSCH, and is not repeated here for brevity.

When the symbol occupied by the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH overlaps the symbol occupied by the signal carried on the PUSCH or the DMRS corresponding to the PUSCH on the time domain resource, if the UE10 determines that the DMRS corresponding to the PUSCH or the ACK signal/NACK signal carried on the PUSCH is not transmitted on the symbol in the current time period, the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may occupy the symbol to transmit.

That is, in the current time period, since the UE10 does not need to transmit the ACK signal/NACK signal carried on the PUSCH and the DMRS corresponding to the PUSCH in the current time period on the symbol, the UE10 determines that the current sPUCCH is the target channel, and the UE10 transmits the signal carried on the sPUCCH and/or the DMRS corresponding to the sPUCCH to the base station 20 in the current time period. Symbols corresponding to signals carried on the PUSCH can be completely punched, are not transmitted and are transmitted when the next scheduling is carried out; alternatively, the signal carried on the PUSCH may also be transmitted at the current time period according to the power in equation (3) or (4):

wherein the content of the first and second substances,

denotes power, j is cell number, i isThe position number of the symbol used when the UE10 transmits the signal in the jth cell,

is the maximum transmit power of the UE10 in the current cell.

For example, fig. 3 is a schematic transmission diagram of a signal carried on sPUCCH and DMRS carried on PUCCH. The time frequency resources occupied by the short TTI transmission service are the 3 rd and 4 th symbols of Resource Block (RB for short) #3, and at this time, the symbols occupied by the short TTI transmission signals and the symbols occupied by the long TTI transmission signals overlap at the 3 rd and 4 th symbol positions, so that the long TTI transmission signals are not transmitted on the 3 rd and 4 th symbols, and the long TTI transmission DMRS can be transmitted on the 5 th or 6 th symbol.

When the symbol occupied by the signal carried on the sPUSCH or the DMRS corresponding to the sPUSCH overlaps the symbol occupied by the signal carried on the PUSCH or the DMRS corresponding to the PUSCH on the time domain resource, if the UE10 determines that the DMRS corresponding to the PUSCH or the ACK signal/NACK signal carried on the PUSCH is not transmitted on the symbol in the current time period, the signal carried on the sPUSCH or the DMRS corresponding to the sPUSCH may occupy the symbol for transmission. That is, in the current time segment, since the UE10 does not need to transmit the ACK signal/NACK signal carried on the PUSCH and the DMRS corresponding to the PUSCH in the current time segment on the symbol, the UE10 determines that the current sPUSCH is the target channel, and the UE10 transmits the signal carried on the sPUSCH and/or the DMRS corresponding to the sPUSCH to the base station 20 in the current time segment. Symbols corresponding to signals carried on the PUSCH can be completely punched, are not transmitted and are transmitted when the next scheduling is carried out; alternatively, the signal carried on the PUSCH may also be transmitted at the current time period according to the power in equation (3) or (4):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

It should be appreciated that traffic transmitted using a short TTI and traffic transmitted using a long TTI may also occupy the same frequency domain resources. At this time, the resource collision occurring between the channels may be a collision occurring on the frequency domain resources and the time domain resources. The determination of the target channel in this case is described in detail below.

In this case, when the UE10 needs to transmit ACK/NACK carried on the PUSCH and the DMRS corresponding to the PUSCH in the current time period, or only transmits the DMRS corresponding to the PUSCH, in order to ensure that the ACK signal/NACK signal and the DMRS are preferentially transmitted, or the DMRS is preferentially transmitted, the sPUCCH or the sPUSCH may stagger symbols used for transmitting the DMRS corresponding to the PUSCH, and directly puncture symbols used for carrying other common signals on the PUSCH to transmit the signals carried on the sPUCCH or the sPUSCH or the corresponding DMRS.

For example, fig. 4 is a diagram illustrating multiplexing of a signal transmitted using a short TTI and a signal transmitted using a long TTI with a DMRS carried on a PUSCH. The time frequency resources occupied by the short TTI transmission service are the 2 nd, 3 rd and 4 th symbols of Resource Block (RB for short) #3, and at this time, the symbols occupied by the short TTI transmission signals and the symbols occupied by the long TTI transmission signals overlap at the 2 nd, 3 rd and 4 th symbol positions, so the long TTI transmission signals are not transmitted on the 2 nd and 4 th symbols, and the long TTI transmission DMRS is transmitted on the original position, i.e., the 3 rd symbol. At this time, the DMRS corresponding to the short TTI is not transmitted, and the short TTI and the long TTI multiplex the same DMRS.

According to table one, when the symbols occupied by the signal carried on the sPUCCH and the signal carried on the PUCCH overlap, and the format of the PUCCH is format 1, format 1a, format 1b, or format 3, if the UE10 determines that the DMRS corresponding to the PUCCH is not included in the signal that needs to be transmitted in the current time period, the signal carried on the PUCCH may occupy the symbol for transmission. That is, on the current transmission resource, since the DMRS corresponding to the PUCCH in format 1, format 1a, format 1b, or format 3 is not transmitted in the current time slot, the UE10 determines that the target channel is the PUCCH, and the UE10 transmits a signal carried on the PUCCH to the base station 20 on the current transmission resource. The signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may be postponed to the next slot, or the next available subframe where no signal carried on the PUCCH is transmitted may be transmitted; or the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may also be sent in the current time period according to the power in the formula (5):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

When the DMRS carried on the sPUCCH or the DMRS corresponding to the sPUCCH overlaps with a symbol occupied by the DMRS carried on the PUCCH or the signal corresponding to the PUCCH, and the format of the PUCCH is format 2, format 2a, format 2b, format 4, or format 5, if the UE10 determines that the DMRS corresponding to the PUCCH is not to be transmitted in the current time period, the sPUCCH and the PUCCH channel may be multiplexed on the same time-frequency resource, but considering that the user equipment has a power-limited scenario, it is determined that the symbol may be occupied by the DMRS carried on the sPUCCH and/or the signal corresponding to the sPUCCH for transmission. That is, on the current transmission resource, since the signal carried on the PUCCH in format 1, format 1a, format 1b, or format 3 is a common signal, the current target channel is sPUCCH, and the UE10 transmits the signal carried on sPUCCH and/or the DMRS corresponding to sPUCCH to the base station 20 on the current transmission resource. Symbols corresponding to signals carried on the PUCCH can be completely punched, are not transmitted and are transmitted when the next scheduling is carried out; alternatively, the signal carried on the PUCCH may also be transmitted in the current time period according to the power in formula (6):

wherein the content of the first and second substances,

is the maximum transmit power of the UE10 in the current cell.

When the DMRS corresponding to the signal carried on the sPUCCH or the sPUCCH overlaps with the symbol occupied by the signal carried on the PUCCH or the DMRS corresponding to the PUCCH, if the signal transmitted by the UE10 in the current time period includes the DMRS corresponding to the PUCCH, the DMRS corresponding to the PUCCH may be transmitted on the symbol. That is, since the DMRS corresponding to the PUCCH needs to be transmitted on the current transmission resource, the current PUCCH is the target channel, and the UE10 transmits the signal carried on the PUCCH and/or the DMRS corresponding to the PUCCH to the base station 20 on the current transmission resource.

For example, the DMRS corresponding to the PUCCH may be retained in the original position, that is, the 4 th and 11 th symbols in the 1ms subframe are not moved, at this time, the sPUCCH needs to avoid the symbol position of the DMRS corresponding to the PUCCH, and a signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may be wholly shifted backward by several symbols, or may be transmitted across symbols occupied by the DMRS corresponding to the PUCCH.

It should be understood that, at this time, the signal carried on the sPUCCH or the DMRS corresponding to the sPUCCH may also be transmitted on the current transmission resource, while puncturing is performed on the PUCCH, and then the signal carried on the PUCCH or the DMRS corresponding to the PUCCH is transmitted on one or several symbols before or after the symbol corresponding to the signal carried on the sPUCCH or the symbol corresponding to the DMRS corresponding to the sPUCCH. Since uplink transmission is scheduled by the base station 20 for the UE10, the base station 20 knows that short TTI transmission will be performed on certain symbols, and it is also known which symbols on the PUCCH are punctured, so the location of the bearer DMRS after moving is also clear. When the signaling or transmission carried on the sPUCCH is completed, the UE10 may increase the transmit power on the remaining symbols of the PUCCH channel.

When the symbols occupied by the signal carried on the sPUSCH overlap with the symbols occupied by the signal carried on the PUSCH, if the signal carried on the PUSCH does not include an ACK signal/NACK signal, and the signal transmitted by the UE10 does not include the DMRS corresponding to the PUSCH in the current time period, the symbol may be occupied to preferentially transmit the signal carried on the sPUSCH and/or the DMRS corresponding to the sPUSCH, while the symbols on the channel of the corresponding long TTI are all punctured, or transmitted in the current time period according to the power in formula (7) or (8):

after the signaling carried on the sPUSCH is completed, the UE10 may increase the transmit power on the remaining symbols of the PUSCH channel.

When the symbols occupied by the signals carried on the sPUSCH overlap with the symbols occupied by the signals carried on the PUCCH, if the signals carried on the PUCCH do not include ACK signal/NACK signal and the signals transmitted by the UE10 do not include DMRS corresponding to the PUCCH in the current time segment, the signals carried on the PUCCH may be transmitted on the current transmission resource, while the signals carried on the sPUSCH for the corresponding short TTI transmission are not transmitted at all, or transmitted on the current time segment according to the power in formula (9):

it should be noted that the length of the short TTI may vary from 1 symbol to 1 slot, e.g., typically 1, 2, 3, 4, 7 symbols, regardless of whether the short TTI transmission and the long TTI transmission are FDM-wise in the frequency domain or occupy the same frequency domain resources. When the short TTI length is 7 symbols or two consecutive short TTIs are a combination of 3 symbols and 4 symbols, it is as long as 1 slot of the long TTI. At this time, the position of the DMRS carried on the uplink channel of the short TTI transmission is consistent with the position of the DMRS carried on the channel of the long TTI transmission. The target channel may be determined in the following manner.

As another embodiment, when the lengths of the multiple short TTIs are as long as 1 slot of the long TTI, the sPUCCH and the PUCCH or the sPUCCH and the PUSCH overlap in the time domain, a signal carried on the sPUCCH may be preferentially transmitted on the current transmission resource, and symbols on the PUCCH and PUSCH of the corresponding long TTI transmission are all punctured or transmitted in the current time segment according to the power in formula (10), formula (11), or formula (12):

wherein the content of the first and second substances,

represents power, j is a cell number, and i is the time when UE10 transmits signals in the jth cellThe position of the symbol used is numbered,

is the maximum transmit power of the UE10 in the current cell.

After the signal carried on the sPUCCH is sent, the UE10 may increase the transmit power on the remaining symbols of the PUSCH or PUCCH.

Here, the second channel may include both the second control channel and the second data channel. At this time, after the target channel is determined among the first channel and the second channel, if the target channel is the second channel, the channel occupying the current time period may be determined again among the second control channel and the second data channel. For example, a channel occupying the current time period for signal transmission may be determined from the second control channel and the second data channel according to a signal carried on the second control channel.

Optionally, as another embodiment, the target channel is the second channel, the second channel includes a second control channel and a second data channel, and the second control channel and the second data channel collide at the current time period, and after the determining of the current target channel, the method further includes:

determining a second target channel in the second control channel and the second data channel according to the type of the signal carried by the second control channel in the current time period;

the sending, in the current time period, the signal carried on the target channel and/or the DMRS corresponding to the target channel includes:

and transmitting a signal carried on the second target channel and/or the DMRS corresponding to the channel in the current time period.

Specifically, in the short TTI transmission process, the UE10 may support simultaneous transmission of a signal carried on the sPUCCH and a signal carried on the sPUSCH, and when the UE10 needs to simultaneously transmit data carried on the sPUCCH and data carried on the sPUSCH, it may avoid interference between the sPUCCH and the sPUSCH in the signal transmission process by planning resources occupied by the sPUCCH or the sPUSCH.

Optionally, as another embodiment, the determining a second target channel in the second control channel and the second data channel includes:

determining that the second target channel is the second data channel if the second control channel includes an ACK signal or a NACK signal in the signal carried over the current time period, and the second data channel includes the ACK signal or the NACK signal in the signal carried over the current time period;

or determining the second target channel as the second control channel.

It should be understood that the first channel may include both the first control channel and the first data channel, and the second signal may also include both the second control channel and the second data channel. For example, when the UE10 needs to simultaneously transmit a signal carried on the PUCCH and a signal carried on the PUSCH, if the UE10 supports simultaneous transmission of a signal carried on the PUCCH and a signal carried on the PUSCH, the UE10 simultaneously transmits the PUCCH and the PUSCH. If the UE10 does not support simultaneous transmission of the signal carried on the PUCCH and the signal carried on the PUSCH, data carried on the control channel PUCCH may be preferentially transmitted. And for the case that the second channel comprises sPUCCH and sPUSCH at the same time, it may be determined from the data carried on sPUSCH, which carried signal is preferentially transmitted in the current time period.

Specifically, when the UE10 needs to simultaneously transmit the signal carried on the sPUCCH and the signal carried on the sPUSCH, if the UE10 supports simultaneous transmission of the signal carried on the sPUCCH and the signal carried on the sPUSCH, the UE10 simultaneously transmits the sPUCCH and the sPUSCH. When the transmission power of UE10 is limited, the signal carried on sPUCCH may be sent preferentially, while the signal carried on sPUCCH is sent at a lower power, e.g., determined according to equation (13) and sent over the current time period:

when the UE10 needs to transmit the signal carried on the sPUCCH and the signal carried on the sPUSCH at the same time, but the UE10 does not support the simultaneous transmission of the signal carried on the sPUCCH and the signal carried on the sPUSCH, the UE10 may preferentially transmit the signal carried on the sPUCCH, and after the signal on the sPUCCH is completely transmitted, transmit the signal carried on the sPUSCH; or the signal carried on the sPUSCH may be postponed until the next slot, or the next available subframe where no signal carried on the PUCCH needs to be transmitted.

When the UE10 needs to simultaneously transmit the signal carried on the sPUCCH and the signal carried on the sPUSCH, but the UE10 does not support simultaneous transmission of the signal carried on the sPUCCH and the signal carried on the sPUSCH, the UE10 may also preferentially transmit the signal carried on the sPUSCH, and the signal carried on the sPUSCH includes an ACK signal or a NACK signal carried on the sPUCCH, that is, the ACK signal or the NACK signal carried on the sPUCCH may be carried and transmitted by the sPUSCH.

Therefore, when the signal transmission is performed in the short TTI transmission mode and the long TTI transmission mode simultaneously, in a channel where resource collision occurs, a channel that can occupy the current transmission resource for signal transmission is determined according to a signal carried by the channel on the current transmission resource, so that interference between channels where resource collision occurs in the signal transmission process is avoided.

It should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.

The method for transmitting signals according to the embodiment of the present invention is described in detail above with reference to fig. 2 to 4 and table one, and the terminal 500 and the terminal 600 according to the embodiment of the present invention are described in detail below with reference to fig. 5 and 6.

Fig. 5 is a block diagram of a terminal 500 according to an embodiment of the present invention. The terminal 500 shown in fig. 5 can be used to perform the various processes described above as being implemented by the user equipment 10 in the method embodiment of fig. 2. As shown in fig. 5, the terminal 500 includes a determining module 501 and a transmitting module 502. The terminal 500 is applied to a first channel or a first demodulation reference signal DMRS corresponding to the first channel, and a scenario where a collision occurs on a current time period with a second channel or a second DMRS corresponding to the second channel, where a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel, and the processing module 501 is configured to:

the sending module 502 is configured to send, in the current time period, at least one of a signal carried on the target channel or a DMRS corresponding to the target channel.

Therefore, when the terminal for transmitting signals according to the embodiment of the present invention performs signal transmission in the short TTI transmission manner and the long TTI transmission manner, in a channel where resource collision occurs, a channel that can occupy the current transmission resource for signal transmission is determined according to a signal carried by the channel on the current transmission resource, so as to avoid interference between channels where resource collision occurs in a signal transmission process.

Optionally, as another embodiment, in a case that the first channel is a first control channel, the processing module 501 is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first physical uplink control channel, and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processing module 501 is specifically configured to:

if the first DMRS is included in the signal to be transmitted, the second channel is determined as the target channel, and the transmitting module 502 transmits the first DMRS before the current time period or after the current time period.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, the processing module 501 is specifically configured to:

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processing module 501 is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first data channel, the processing module 501 is specifically configured to:

if the signal to be transmitted includes at least one of an ACK signal, a NACK signal carried in the first data channel, or a DMRS corresponding to the first data channel, the second channel is determined as the target channel, and the transmitting module 502 transmits the at least one of the ACK signal, the NACK signal, or the first DMRS carried in the first channel before the current time period or after the current time period.

Optionally, as another embodiment, in a case that the second channel is determined as a target channel, if the second channel includes a second control channel and a second data channel, and the second control channel and the second data channel collide with each other over the current time period, after the processing module 501 determines a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted over the current time period, the processing module 501 is further configured to:

a second target channel is determined in the second control channel and the second data channel according to the signal type of the signal to be transmitted of the second control channel in the current time period, and the transmitting module 502 is specifically configured to:

Optionally, as another embodiment, the processing module 501 is specifically configured to:

or determining the second control channel as the second target channel.

As shown in fig. 6, the embodiment of the present invention further provides a terminal 600, where the terminal 600 includes a processor 601, a memory 602, a transceiver 603, and an antenna 604. A receiver 6031 and a transmitter 6032 may be included in the transceiver 603 for receiving signals and transmitting signals, respectively. The memory 602 is used to store instructions and the processor 601 is used to execute the instructions stored by the memory 602 and to control the transmitter 6032 to transmit signals. Wherein the processor 601, memory 602, and transceiver 603 may be implemented by one or more chips. For example, the processor 601, the memory 602, and the transceiver 603 may be fully integrated in one or more chips, or the processor 601 and the transceiver 603 may be integrated in one chip and the memory 602 may be integrated in another chip, and the specific form is not limited herein.

The terminal 600 is applied to a first channel or a first demodulation reference signal DMRS corresponding to the first channel, and a scenario where a collision occurs on a current time period with a second channel or a second DMRS corresponding to the second channel, where a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel, and the processor 601 is configured to:

the transmitter 6032 is configured to transmit, in the current time period, at least one of a signal carried on the target channel or a DMRS corresponding to the target channel.

It should be understood that the terminal 600 may be embodied as the UE10 in the foregoing embodiments, and may be configured to perform various steps and/or procedures corresponding to the UE10 in the foregoing method embodiments.

The memory 602 may optionally include both read-only memory and random access memory, and provides instructions and data to the processor 601. A portion of the memory 602 may also include non-volatile random access memory. For example, the memory 602 may also store device type information. The processor 601 may be configured to execute instructions stored in the memory 602, and when the processor 601 executes instructions stored in the memory 602, the processor 601 may be configured to perform the various steps and/or processes of the above-described method embodiments.

Optionally, as another embodiment, in a case that the first channel is a first control channel, the processor 601 is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first physical uplink control channel, and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processor 601 is specifically configured to:

if the first DMRS is included in the signal to be transmitted, the second channel is determined to be the target channel, and the transmitter 6032 transmits the first DMRS before the current time period or after the current time period.

Optionally, as another embodiment, when the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, the processor 601 is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first physical uplink control channel, and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processor 601 is specifically configured to:

Optionally, as another embodiment, in a case that the first channel is a first data channel, the processor 601 is specifically configured to:

if the signal to be transmitted includes at least one of an ACK signal, a NACK signal, or a DMRS corresponding to the first data channel, which is carried in the first data channel, the second channel is determined as the target channel, and the transmitter 6032 transmits the at least one of the ACK signal, the NACK signal, or the first DMRS carried in the first channel before the current time period or after the current time period.

Optionally, as another embodiment, in a case that the second channel is determined as a target channel, if the second channel includes a second control channel and a second data channel, and the second control channel and the second data channel collide during the current time period, after the processor 601 determines a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted during the current time period, the processor 601 is further configured to:

a second target channel is determined in the second control channel and the second data channel according to the signal type of the signal to be transmitted of the second control channel in the current time period, and the transmitter 6032 is specifically configured to:

Optionally, as another embodiment, the processor 601 is specifically configured to:

or determining the second control channel as the second target channel.

Fig. 7 is a schematic configuration diagram of a communication system of an embodiment of the present invention. The communication system 700 shown in fig. 7 comprises a terminal 600 and a base station 20.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

It should be understood that the term "and/or" and "at least one of a or B" herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should also be understood that, in the embodiments of the present invention, the Processor may be a Central Processing Unit (CPU), or other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other Programmable logic device, discrete gate or transistor logic device, discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor executes instructions in the memory, in combination with hardware thereof, to perform the steps of the above-described method. To avoid repetition, it is not described in detail here.

Those of ordinary skill in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented as electronic hardware, computer software, or combinations of both, and that the steps and elements of the various embodiments have been described above generally in terms of their functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention essentially or partially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting signals, wherein the method is performed by a terminal, and is applied to a first channel or a first demodulation reference signal (DMRS) corresponding to the first channel, and a scenario where a second DMRS corresponding to a second channel or the second channel collides in a current time period, wherein a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel, and the method comprises:

2. The method of claim 1, wherein in the case that the first channel is a first control channel, the determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period comprises:

3. The method of claim 1, wherein in a case that the first channel is a first physical uplink control channel and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period comprises:

4. The method of claim 1, wherein in a case that the first channel is a first physical uplink control channel and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, the determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period includes:

5. The method of claim 1, wherein in a case that the first channel is a first physical uplink control channel and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period comprises:

6. The method of claim 1, wherein the determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period in case that the first channel is a first data channel comprises:

7. The method of claim 1, wherein determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period in case that the first channel is a first data channel comprises:

8. The method of claim 1, wherein determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted in a current time period in case that the first channel is a first data channel comprises:

9. The method of claim 1, wherein in case of determining the second channel as a target channel, if a second control channel and a second data channel included in the second channel collide over the current time period, after determining a current target channel among the first channel and the second channel according to a signal type of a signal to be transmitted over the current time period, the method further comprises:

10. The method of claim 9, wherein the determining a second target channel among the second control channel and the second data channel according to a signal type of a signal to be transmitted on the second control channel in the current time period comprises:

determining the second data channel as the second target channel if the second control channel includes an ACK signal or a NACK signal in the signal to be transmitted in the current time period, and the second data channel includes the ACK signal or the NACK signal in the signal transmitted in the current time period,

or determining the second control channel as the second target channel.

11. The method of any one of claims 1 to 10, wherein the transmission time comprises at least one of a transmission time interval, TTI, or a consecutive plurality of TTIs.

12. A terminal comprising a processor and a transmitter coupled to the processor, wherein the terminal is applied to a first channel or a first demodulation reference signal (DMRS) corresponding to the first channel, and a second DMRS corresponding to a second channel or the second channel collides in a current time period, wherein a length of a transmission time corresponding to the first channel is greater than a length of a transmission time corresponding to the second channel, and the processor is configured to:

13. The terminal of claim 12, wherein in the case that the first channel is a first control channel, the processor is specifically configured to:

14. The terminal of claim 12, wherein in a case that the first channel is a first physical uplink control channel and a channel format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processor is specifically configured to:

15. The terminal of claim 12, wherein in a case that the first channel is a first physical uplink control channel and a format of the first physical uplink control channel is any one of format 1, format 1a, format 1b, or format 3, the processor is specifically configured to:

16. The terminal of claim 12, wherein in a case that the first channel is a first physical uplink control channel and a format of the first physical uplink control channel is any one of format 2, format 2a, format 2b, format 4, or format 5, the processor is specifically configured to:

17. The terminal of claim 12, wherein in the case that the first channel is a first data channel, the processor is specifically configured to:

18. The terminal of claim 12, wherein in the case that the first channel is a first data channel, the processor is specifically configured to:

19. The terminal of claim 12, wherein in the case that the first channel is a first data channel, the processor is specifically configured to:

20. The terminal of claim 12, wherein if the second channel is determined as the target channel, and the second channel comprises a second control channel and a second data channel, and the second control channel and the second data channel collide during the current time period, the processor is further configured to, after determining a current target channel in the first channel and the second channel according to a signal type of a signal to be transmitted during the current time period:

determining a second target channel in the second control channel and the second data channel according to the signal type of the signal to be transmitted of the second control channel in the current time period, wherein the transmitter is specifically configured to:

21. The terminal of claim 20, wherein the processor is further configured to:

or determining the second control channel as the second target channel.

22. The terminal of any of claims 12 to 21, wherein the transmission time comprises at least one of a transmission time interval, TTI, or a consecutive plurality of TTIs.

23. A communication system comprising a base station and a terminal as claimed in any one of claims 12 to 22.