CN112399619A

CN112399619A - Signal transmission method and signal transmission device

Info

Publication number: CN112399619A
Application number: CN201910760906.6A
Authority: CN
Inventors: 谢信乾; 郭志恒; 龙毅
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23
Also published as: WO2021031978A1

Abstract

The signal sending method provided by the application comprises the following steps: receiving first indication information from a first network device, wherein the first indication information indicates that a first Modulation and Coding Scheme (MCS) is adopted in a first time period on a first uplink carrier; and when a time interval between the end time of the first time period and the start time of the second time period is smaller than a first time length, or when the time interval between the start time of the first time period and the end time of the second time period is smaller than the first time length, according to the first indication information, transmitting a first uplink signal by using a second MCS in the first time period on the first uplink carrier, wherein the first MCS is different from the second MCS, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier. The signal transmission method and the signal transmission device can improve communication efficiency.

Description

Signal transmission method and signal transmission device

Technical Field

The present application relates to the field of communications, and more particularly, to a signal transmission method and a signal transmission apparatus in the field of communications.

Background

With the continuous development of wireless communication systems, terminal devices support simultaneous access to different network devices, for example, a Long Term Evolution (LTE) system and a (5G) new radio interface (NR) network, and this access manner is called evolved universal terrestrial radio access (evolved universal terrestrial radio access) and new radio access (NR) dual connectivity (EN-DC).

A typical transmitting antenna architecture of a terminal device supporting EN-DC is an NR antenna and a shared antenna, the NR antenna is dedicated for NR uplink transmission, and the shared antenna is switched to meet uplink transmission requirements of NR or LTE at different times.

However, when the terminal device adopting the antenna architecture communicates with the network device in a dual connection manner, there is a problem that communication efficiency needs to be improved.

Disclosure of Invention

The signal transmission method and the signal transmission device can improve communication efficiency.

In a first aspect, the present application provides a signal transmission method, including:

receiving first indication information from a first network device, wherein the first indication information indicates that a first Modulation and Coding Scheme (MCS) is adopted in a first time period on a first uplink carrier;

and when a time interval between the end time of the first time period and the start time of the second time period is smaller than a first time length, or when the time interval between the start time of the first time period and the end time of the second time period is smaller than the first time length, according to the first indication information, transmitting a first uplink signal by using a second MCS in the first time period on the first uplink carrier, wherein the first MCS is different from the second MCS, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier.

The method of the first aspect may be executed by a terminal device, or may be executed by a chip in the terminal device, for example, a baseband processing chip.

Since LTE and NR operate on carriers of different frequency bands, there is a switching duration when the shared antenna switches between LTE and NR frequencies. However, in the case that the time interval between the end time of the first time period on the LTE uplink carrier to which the terminal device is scheduled and the start time of the second time period on the NR uplink carrier to which the terminal device is scheduled is less than the switching time period required for the shared antenna to be switched from the LTE uplink carrier to the NR uplink carrier, the shared antenna has not yet completed the switching from the LTE network to the NR network, and therefore, the terminal device cannot normally transmit a signal through both antennas within the time period in which the switching time period overlaps the second time period.

However, in the prior art, the first MCS indicated by the first indication information is not available in the first time period, and therefore, in the prior art, a terminal device cannot transmit a signal in the first time period. After the signal transmission method of the first aspect is adopted, since the terminal device may transmit the signal by using an MCS different from the first MCS, the terminal device may transmit the first uplink signal in the first time period, so that the communication efficiency in the first time period is improved.

In a second aspect, the present application provides another signal transmission method, including:

receiving first indication information from a network device, wherein the first indication information indicates that a first MCS is adopted in a first time period on a first uplink carrier, the first time period comprises N continuous symbols, a time difference between a starting time of an Mth symbol in the N continuous symbols and an ending time of a second time period is less than a first time length, and a time difference between a starting time of an M +1 th symbol in the N continuous symbols and an ending time of the second time period is greater than or equal to the first time length, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier; and

when the M is less than or equal to K, transmitting a first uplink signal to the network equipment on a partial symbol of the N continuous symbols on the first uplink carrier, wherein the partial symbol is a symbol except for the first M symbols of the N continuous symbols, and no signal is transmitted on the first M symbols;

when the M is larger than the K, a first uplink signal is sent to the network equipment by adopting a second MCS on the N continuous symbols on the first uplink carrier;

wherein, N, M and K are both positive integers.

Since the first MCS indicated by the first indication information is not available in the prior art in the first time period, the terminal device cannot transmit a signal in the prior art in the first time period. After the signal transmission method of the second aspect is adopted, the terminal device may transmit the first uplink signal in the first time period when M is greater than K, so that communication efficiency in the first time period is improved.

In certain implementations of the first or second aspect, the method further comprises: and reporting sending capability to the first network device, wherein the sending capability comprises the number of sending antennas and/or the number of maximum antenna ports (ports) supported by the terminal device.

And the first network equipment schedules the terminal equipment according to the maximum port number supported by the terminal equipment, namely the first network equipment sends the first indication information to the terminal equipment according to the sending capacity.

In certain implementations of the first or second aspect, the method further comprises: and receiving second indication information from the second network equipment, wherein the second indication information indicates that the uplink signal is transmitted in a second time period on a second uplink carrier.

That is, the first indication information indicates that the uplink signal is transmitted in a first period on the first uplink carrier, and the second indication information indicates that the uplink signal is transmitted in a second period on the second uplink carrier.

Optionally, the first indication information may be carried in a plurality of different signaling, which is not limited in this embodiment of the application. For example, the first indication information may be carried in Downlink Control Information (DCI).

Optionally, the second indication information may be carried in a plurality of different signaling, which is not limited in this embodiment of the application. For example, the second indication information may be carried in DCI.

Optionally, the fact that the index corresponding to the first MCS is different from the index corresponding to the second MCS may be understood as: the index corresponding to the first MCS may be greater than the index corresponding to the second MCS, or the index of the first MCS may be smaller than the index corresponding to the second MCS, which is not limited in this embodiment of the application.

In a possible implementation manner, the index corresponding to the first MCS is smaller than the index corresponding to the second MCS.

In certain implementations of the first aspect or the second aspect, the transmitting the first uplink signal with the second MCS in the first time period on the first uplink carrier further includes: and transmitting the first uplink signal by adopting a second MCS and a second layer number in the first time period on the first uplink carrier, wherein the first layer number is greater than the second layer number.

The number of layers described in this embodiment may also be referred to as a number of spatial layers.

That is, since the number of available transmit antennas on the NR side of the terminal device is reduced from 2 to 1, that is, the maximum port number for transmitting the NR-side uplink signal is reduced from 2 to 1, when the scheduled first layer number is 2, the second layer number of the first uplink signal finally transmitted by the terminal device can only be 1 layer, that is, the second layer number is smaller than the first layer number, so that the transmit power of the terminal device on the currently available port remains unchanged, and the transmit power divided by each symbol to be transmitted does not change. Therefore, the terminal equipment can improve the MCS on the premise of reducing the layer number, and can maintain the number of the symbols to be transmitted unchanged, thereby maintaining the throughput unchanged.

In one possible implementation, the index corresponding to the first MCS is greater than the index corresponding to the second MCS.

In certain implementations of the first aspect or the second aspect, the transmitting the first uplink signal with the second MCS in the first time period on the first uplink carrier further includes: and transmitting the first uplink signal by adopting a second MCS and a second layer number in the first time period on the first uplink carrier, wherein the first layer number is equal to the second layer number.

In certain implementations of the first aspect or the second aspect, the first indication information further indicates a number of antenna ports, wherein the number of antenna ports is greater than 1, and the first layer number is equal to 1.

That is, since the number of available transmit antennas of the terminal device on the NR side is reduced from 2 to 1, and when the scheduled first layer number is 1, the second layer number is equal to the first layer number, that is, the second layer number of the first uplink signal transmitted by the terminal device and the scheduled first layer number are equal, so that since the number of available transmit antennas is reduced by half, the transmit power of the terminal device is reduced by half, and the divided transmit power on each symbol to be transmitted is reduced by half. Therefore, in order to prevent the decoding performance from deteriorating, the terminal device reduces the MCS while maintaining the number of layers, and can increase the transmission power that can be divided for each symbol to be transmitted, thereby improving the reliability of transmission.

In certain implementations of the first aspect or the second aspect, the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier according to the first indication information includes: determining the second MCS according to the first indication information; and transmitting a first uplink signal with the second MCS within the first time period on the first uplink carrier.

Optionally, the terminal device may determine the second MCS in multiple ways, which is not limited in this embodiment of the present application.

In certain implementations of the first aspect or the second aspect, the determining the second MCS according to the first indication information includes: and determining the second MCS according to the first indication information and the difference value of the index corresponding to the second MCS and the index corresponding to the first MCS.

In some implementations of the first aspect or the second aspect, a difference between the index corresponding to the second MCS and the index corresponding to the first MCS is predefined, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is configured through high layer signaling, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is determined according to a predefined rule.

For example, the first network device may send third indication information to the terminal device, where the third indication information indicates a difference between an index corresponding to the second MCS and an index corresponding to the first MCS. Correspondingly, the terminal device receives the third indication information from the first network device, and determines the difference between the index corresponding to the second MCS and the index corresponding to the first MCS according to the third indication information.

For another example, the first network device may send fourth indication information to the terminal device, where the fourth indication information indicates a difference between an index corresponding to the second MCS and an index corresponding to the first MCS, which are determined according to a predefined first rule. Correspondingly, the terminal device receives the fourth indication information from the first network device, and determines the difference value between the index corresponding to the second MCS and the index corresponding to the first MCS according to the fourth indication information and the first rule.

Optionally, the first rule may include: and mapping relation between the indexes corresponding to the first MCS and the difference between the indexes corresponding to the second MCS and the indexes corresponding to the first MCS.

It should be noted that, when the index corresponding to the first MCS and the index corresponding to the MCS determined by the terminal device according to the difference are greater than the upper limit value defined in the MCS table, the terminal device may determine the upper limit value in the MCS table as the index corresponding to the second MCS.

In certain implementations of the first aspect or the second aspect, the determining the second MCS according to the first indication information includes: and the terminal equipment determines the second MCS according to the first indication information and a predefined second rule.

For example, the first network device may send, to the terminal device, fifth indication information indicating that an index corresponding to the second MCS is determined according to a predefined second rule. Correspondingly, the terminal device receives the fifth indication information from the first network device, and determines an index corresponding to the second MCS according to the first indication information, the fifth indication information and the second rule.

In certain implementations of the first or second aspect, the first uplink carrier and the second uplink carrier belong to different cell groups.

In certain implementations of the second aspect, the K is predefined, or the K is configured through higher layer signaling, or the K is determined according to a predefined rule.

In a third aspect, the present application provides a further signal transmission method, including:

receiving first indication information from a first network device, wherein the first indication information indicates that a first layer number is adopted in a first time period on a first uplink carrier, and the first time period comprises N continuous symbols;

receiving second indication information from a second network device, wherein the second indication information indicates that the first layer number is adopted in a second time period on a second uplink carrier, and the second time period comprises M continuous symbols; and

when a time interval between a start time of the first time period and an end time of the second time period is less than a first time length and the first time length includes a last at least one symbol of the M consecutive symbols, transmitting a second uplink signal to the second network device on a partial symbol of the M consecutive symbols on the second uplink carrier when the first layer number is greater than 1 or when the first layer number is equal to 1 and the number of antenna ports corresponding to the first layer number is greater than 1, wherein the partial symbol of the M consecutive symbols is a symbol of the M consecutive symbols except the last at least one symbol and no signal is transmitted on the last at least one symbol; and/or the presence of a gas in the gas,

when a time interval between a starting time of the first time period and an ending time of the second time period is less than a first time length, and the first time length includes at least one preceding symbol of the N consecutive symbols, transmitting a first uplink signal to the first network device on a partial symbol of the N consecutive symbols on the first uplink carrier, where the partial symbol is a symbol of the N consecutive symbols except the at least one preceding symbol, and no signal is transmitted on the at least one preceding symbol, when the first layer number is greater than 1, or when the first layer number is equal to 1 and the number of antenna ports corresponding to the first layer number is greater than 1; correspondingly, the first network device receives the first uplink signal sent by the terminal device on a partial symbol of the N consecutive symbols on the first uplink carrier.

In certain implementations of the third aspect, the method specifically includes: determining whether symbols occupied by the first length of time belong to a first time period or a second time period; and according to the judgment result, determining to send a first uplink signal to the first network device on a part of the N continuous symbols on the first uplink carrier, and/or send a second uplink signal to the second network device on a part of the M continuous symbols on the second uplink carrier.

It should be understood that, when the first time length includes the first W symbols in the first time period, that is, the terminal device does not send signals on the first W symbols, if W is greater than the maximum number of allowed missing symbols for sending signals on the premise that the error rate corresponding to the decoding result is less than or equal to the target error rate, it may affect the normal decoding of the first network device.

Therefore, the signal transmitting apparatus may partially or completely disperse the W symbols not transmitting the signal on the second network device side, that is, the first time length includes the last a symbols of the second time period and the first B symbols of the first time period, so that B is less than the maximum number of allowed missing symbols of the transmitted signal on the premise that the error rate corresponding to the decoding result is less than or equal to the target error rate, where a + B is W, where a and W are positive integers, and B is an integer greater than or equal to 0.

Furthermore, in the above case, it is generally possible for the first network device to be scheduled to transmit signals of higher order of importance for decoding, e.g., DMRS, on the first W symbols of the first time period.

Therefore, the W symbols which do not transmit signals are partially or completely dispersed on the second network equipment side, which is beneficial to improving the decoding accuracy of the first network equipment side.

In certain implementations of the third aspect, in a case that a time interval between a start time of the first time period and an end time of the second time period is less than a first time length, when the first layer number is equal to 1, the terminal device transmits a third uplink signal to the first network device on the N consecutive symbols on the first uplink carrier, and transmits a fourth uplink signal to the second network device on the M consecutive symbols on the second uplink carrier.

In one possible implementation, the first uplink carrier and the second uplink carrier belong to different cell groups.

In a fourth aspect, the present application provides a further signal transmission method, including:

receiving first indication information from a network device, wherein the first indication information indicates that a first Modulation and Coding Scheme (MCS) is adopted in a first time period on a first uplink carrier; and

under the condition that the time interval between the ending time of the first time period and the starting time of the second time period is less than a first time length, when the time of receiving the first indication information is later than the time of receiving second indication information, according to the first indication information and according to the first indication information, a first uplink signal is sent to the network equipment by adopting a second MCS in the first time period on the first uplink carrier, wherein the second indication information indicates that a second uplink signal is sent in the second time period on a second uplink carrier;

when a time interval between an end time of the first time period and a start time of a second time period is less than a first time length, when a time for receiving the first indication information is earlier than a time for receiving second indication information, transmitting a first uplink signal to the network device on a partial symbol of N consecutive symbols included in the first uplink carrier, wherein the partial symbol is a symbol except for at least one preceding symbol of the N consecutive symbols, and no signal is transmitted on the at least one preceding symbol, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier.

Optionally, the method specifically includes: determining the sequence of the time for receiving the first indication information and the time for receiving the second indication information; and determining whether to transmit a first uplink signal to the network equipment by using a second MCS in the first time period on the first uplink carrier or to transmit the first uplink signal to the network equipment on a part of N continuous symbols included in the first uplink carrier according to the sequence.

That is, if the time of receiving the first indication information is earlier than the time of receiving the second indication information, the signal transmitting apparatus has sufficient time to complete encoding using the re-determined MCS, and therefore, transmits the first uplink signal to the network apparatus using the second MCS within the first time period on the first uplink carrier; if the time of receiving the first indication information is later than the time of receiving the second indication information, the terminal device has insufficient time to complete coding by using the re-determined MCS, and therefore, a first uplink signal is transmitted to the network device on a part of N continuous symbols included in the first uplink carrier.

In a possible implementation manner, the first indication information further indicates a first number of layers, and the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier includes: and transmitting the first uplink signal by adopting a second MCS and a second layer number in the first time period on the first uplink carrier, wherein the first layer number is greater than the second layer number.

In a possible implementation manner, the first indication information further indicates a first number of layers, and the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier includes: and transmitting the first uplink signal by using a second MCS and a second layer number within the first time period on the first uplink carrier, wherein the first layer number is equal to the second layer number, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

In a possible implementation manner, the first indication information further indicates a number of antenna ports, where the number of antenna ports is greater than 1, and the first layer number is equal to 1.

In a possible implementation manner, the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier according to the first indication information includes: determining the second MCS according to the first indication information; and transmitting a first uplink signal with the second MCS within the first time period on the first uplink carrier.

In a possible implementation manner, the determining the second MCS according to the first indication information includes: and determining the second MCS according to the first indication information and the difference value of the index corresponding to the second MCS and the index corresponding to the first MCS.

In a possible implementation manner, a difference between the index corresponding to the second MCS and the index corresponding to the first MCS is predefined, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is configured through high layer signaling, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is determined according to a predefined rule.

In a fifth aspect, the present application provides a signal sending apparatus in a terminal device, configured to execute the method in the first aspect or any possible implementation manner of the first aspect. In particular, the signal transmission apparatus may comprise means for performing the method in the above aspects or any possible implementation thereof.

In a sixth aspect, the present application provides a terminal device, including: memory, a processor, a transceiver, and instructions stored on the memory and executable on the processor, wherein the memory, the processor, and the communication interface are in communication with each other via an internal connection path, wherein the processor executes the instructions to cause the communication device to implement the method of the above aspects or any possible implementation thereof.

In a seventh aspect, the present application provides a computer-readable storage medium for storing a computer program comprising instructions for implementing the method in the above aspects or any possible implementation thereof.

In an eighth aspect, the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to carry out the method of the above aspects or any possible implementation thereof.

In a ninth aspect, the present application provides a chip apparatus, comprising: the chip device comprises an input interface, an output interface, at least one processor and a memory, wherein the input interface, the output interface, the processor and the memory are communicated with each other through an internal connection path, the processor is used for executing codes in the memory, and when the processor executes the codes, the chip device realizes the method in the aspects or any possible implementation manner.

Drawings

Fig. 1 is a schematic diagram of a communication system 100 provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of an application scenario provided by an embodiment of the present application;

fig. 3 is a schematic flowchart of a signal transmission method 200 provided in an embodiment of the present application;

fig. 4 is a schematic flow chart of a signal transmission method 300 provided in an embodiment of the present application;

fig. 5 is a schematic diagram of another application scenario provided in an embodiment of the present application;

fig. 6 is a schematic flow chart of a signal transmission method 400 provided in an embodiment of the present application;

FIG. 7 is a schematic diagram of another application scenario provided by an embodiment of the present application;

FIG. 8 is a schematic diagram of another application scenario provided by an embodiment of the present application;

FIG. 9 is a schematic diagram of another application scenario provided by an embodiment of the present application;

fig. 10 is a schematic flowchart of a signal transmission method 500 provided in an embodiment of the present application;

fig. 11 is a schematic flowchart of a signal transmission apparatus 600 provided in an embodiment of the present application;

fig. 12 is a schematic flowchart of a signal transmission apparatus 700 provided in an embodiment of the present application;

fig. 13 is a schematic flowchart of a signal transmission apparatus 800 provided in an embodiment of the present application;

fig. 14 is a schematic flowchart of a signal transmitting apparatus 900 provided in an embodiment of the present application;

fig. 15 is a schematic flowchart of a terminal device 1000 provided in an embodiment of the present application;

fig. 16 is a schematic flowchart of a terminal device 1100 provided in an embodiment of the present application;

fig. 17 is a schematic flowchart of a terminal device 1200 provided in an embodiment of the present application;

fig. 18 is a schematic flowchart of a terminal device 1300 provided in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

First, for the sake of clarity, some terms in the embodiments of the present application are explained.

1. Terminal device

The terminal device may be mobile or stationary. The terminal equipment may refer to 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 device, etc.

The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical treatment (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like. In the embodiment of the present application, the terminal device and the chip that can be disposed on the terminal device are collectively referred to as a terminal device.

2. Network device

A network device may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area.

The network device in this embodiment may be a base station (BTS) in a Global System for Mobile communications (GSM) System or a Code Division Multiple Access (CDMA) System, a base station (NB) in a Wideband Code Division Multiple Access (WCDMA) System, an evolved node B (eNB) or eNodeB in a Long Term Evolution (LTE) System, or a wireless controller in a Cloud Radio Access Network (CRAN). The network device may also be a core network, a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future Generation 5G (5th Generation) system or a New Radio (NR) system, or a network device in a Public Land Mobile Network (PLMN) for future evolution, and the like.

It should be noted that the above-mentioned "system" and "network" may be used alternatively to each other.

It should be noted that, unless otherwise specified, ordinal numbers such as "first", "second", and the like in the embodiments of the present application are used to distinguish a plurality of objects, and are not used to limit the order, sequence, priority, degree of importance, and the like of the plurality of objects.

3. Dual connection (MR-DC) communication system

The dual connectivity communication system is a communication system supporting simultaneous deployment of two Radio Access Technologies (RATs), that is, two network devices supporting different radio access technologies are deployed in the dual connectivity communication system, and similarly, a terminal device in the dual connectivity communication system supports simultaneous access to the two different network devices.

For example, in a dual connectivity communication system, a network device of NR and a network device of LTE may be deployed at the same time, and a terminal device supports simultaneous access to the network device of LTE and the network device of NR, such an access manner is referred to as evolved universal terrestrial radio access (E-UTRA) and NR dual connectivity (EN-DC).

Further, the network device of NR and the network device of LTE may also be integrated in one network device.

Fig. 1 shows a schematic architecture diagram of a communication system 100 provided by an embodiment of the present application. As shown in fig. 1, the communication system 100 may include one or more network devices (network device 110 and network device 120 are shown in fig. 1) and at least one terminal device (terminal device 130 is shown in fig. 1). Further, network device 110 and network device 120 may be integrated into one network device.

In the communication system 100, the network device 110 supports a first radio access technology, for example, LTE, and the network device 120 supports a second radio access technology, for example, NR, and in a case where the two radio access technologies are deployed simultaneously, the terminal device 130 supports simultaneous access to the network device 110 and the network device 120, that is, the terminal device 130 may perform uplink/downlink communication with the network device 110 on a first carrier, may perform uplink/downlink communication with the network device 120 on a second carrier, and may perform uplink/downlink communication with the network device 110 and the network device 120 simultaneously.

It should be noted that, for convenience of understanding, fig. 1 only schematically illustrates that two network devices (network device 110 and network device 120) supporting different radio access technologies and a terminal device (terminal device 130) supporting the two radio access technologies are included in the communication system 100, but this should not limit the present application in any way.

Optionally, the communication system 100 may further include a greater number of network devices, and may also include a greater number of terminal devices. These greater number of network devices may or may not support the same radio access technology. The network devices communicating with different terminal devices may be the same network device or different network devices. The number of network devices communicating with different terminal devices may be the same or different, and the application does not limit this.

It should be noted that the antenna structure of the existing terminal device supporting EN-DC is 1 NR antenna and 1 shared antenna, where the NR antenna is exclusively used for NR uplink transmission, and the shared antenna meets the uplink transmission requirements of NR and LTE at different times by switching the working frequency band of the carrier. However, there is a switching time when the shared antenna switches between the LTE operating band and the NR operating band, and the shared antenna cannot transmit signals during the switching time.

When network devices (i.e., NR network devices and LTE network devices) connected to the EN-DC are deployed in a non-tight coupling manner, that is, when a network device side cannot share scheduling messages in real time, the following situations may occur in the prior art:

when the network equipment side does not take the antenna switching time into account in the process of downlink scheduling, the scheduling indicates that the shared antenna of the EN-DC terminal works in an LTE working frequency band in the previous period, in the following period of time, operating in the NR operating band (or operating in the NR operating band in the previous period of time, and operating in the LTE operating band in the following period of time), but the time difference between the two periods of time is not enough to allow the shared antenna to complete the switching, so the shared antenna cannot normally transmit signals according to the scheduling message, and the prior art not only allows the terminal device in this case, no processing method is defined on the side of other terminal devices, except for discarding the affected symbols, and thus, in the above case, the amount of information contained in the received signal is obviously lower than the amount of information carried in the signal normally received according to the scheduling message, and the communication efficiency is reduced.

For example, fig. 2 shows a possible application scenario suitable for the embodiment of the present application, and as shown in fig. 2, terminal devices supporting EN-DC are scheduled for a first time period T on a first uplink carrier₁A second time period T for internally sending uplink signals to the first network equipment and scheduled on a second uplink carrier₂And sending the uplink signal to the second network equipment. Wherein, T₂End time and T₁The time interval between the starting moments is delta T, according to the indication of the scheduling message, the terminal device needs to switch the shared antenna from the working frequency band of the second uplink carrier to the working frequency band of the first uplink carrier, and the time length occupied by the carrier switching process is the first time length T.

Adopting NR working frequency band for the first uplink carrier, adopting LTE working frequency band for the second uplink carrier, and a first time period T₁And a second time period T₂Each of the network devices includes 14 symbols, and the ending time of the second time period is earlier than the starting time of the first time period, that is, the shared antenna needs to be switched from the operating frequency band of LTE to the operating frequency band of NRTherefore, when Δ T < T, the shared antenna cannot switch from the LTE operating frequency band to the NR operating frequency band within the time interval Δ T, and the shared antenna cannot normally transmit the uplink signal according to the indication of the scheduling message.

In the prior art, under the above scenario, the terminal device solves the above problem by not sending signals on the affected symbols (e.g. not sending signals on symbols 0 to 3 in fig. 2, that is, discarding the symbols to be sent on symbols 0 to 3), but with the method provided in the prior art, the amount of information contained in the signals received by the first network device (e.g. the signals received on symbols 4 to 13 in fig. 2) is lower than the amount of information carried by the signals normally received according to the scheduling message (e.g. the signals received on symbols 0 to 13 in fig. 2), and therefore, the communication efficiency is lower.

It should be noted that, in fig. 2, an example is described in which the first uplink carrier adopts an NR operating frequency band, the second uplink carrier adopts an LTE operating frequency band, and the ending time of the second time period is earlier than the starting time of the first time period, that is, the shared antenna needs to be switched from the LTE operating frequency band to the NR operating frequency band, but this application describes the first time period T₁And the second time period T₂The sequence of the above is not limited. That is, the ending time of the first time period may be earlier than the starting time of the second time period, that is, the shared antenna needs to be switched from the NR operating band to the LTE operating band.

Optionally, any one of the time periods in this embodiment may include a plurality of symbols (symbols), and the plurality of symbols may be, for example, slots (slots), or mini-slots (mini-slots), or subframes (subframes), or system frames (frames), and this is not limited in this embodiment.

It should be noted that, in the embodiment of the present application, only the first time period T is used₁And a second time period T₂All including 14 symbols for description, the length of the first time period and the second time period is not limited in the present application. That is, the first time period and the second time period further include other numbers of symbols, and the lengths of the first time period and the second time period may be the sameLikewise, they may be different.

It should be further noted that, in the embodiment of the present application, the first time length T may be understood as a switching time length required for switching the shared antenna from the operating frequency band of the first carrier to the operating frequency band of the second carrier.

Optionally, the duration of the first time length is not limited in the embodiment of the present application, for example, the first time length defined in fig. 6.3b.2-1 in protocol 38.101-3 and "OFF power requirement" in fig. 6.3b.2-2 may be 120 microseconds.

Optionally, the first time length T may be predefined or configured through higher layer signaling, which is not limited in this embodiment of the application.

In order to solve the problem of low communication efficiency in the prior art, embodiments of the present application provide a signal transmission method 200, a signal transmission method 300, a signal transmission method 400, and a signal transmission method 500, so as to improve communication efficiency.

Fig. 3 shows a schematic flowchart of a signal transmission method 200 provided in an embodiment of the present application, where the method 200 may be applied to a communication system as described in fig. 1, and the embodiment of the present application does not limit this.

Alternatively, the method 200 may be performed by a terminal device, and may be performed by a signal sending apparatus in the terminal device, for example, the terminal device 130 described in fig. 1. For convenience of description, in the embodiments of the present application, an example of execution by a terminal device is described.

S210, receiving first indication information from a first network device, where the first indication information indicates that a first Modulation and Coding Scheme (MCS) is adopted in a first time period on a first uplink carrier; correspondingly, the first network equipment sends the first indication information to the terminal equipment.

S220, when a time interval between an end time of the first time period and a start time of a second time period is smaller than a first time length, or when a time interval between the start time of the first time period and the end time of the second time period is smaller than the first time length, according to the first indication information, sending a first uplink signal by using a second MCS in the first time period on the first uplink carrier, where the first MCS is different from the second MCS, and the second time period is a time period for sending a second uplink signal on a second uplink carrier; correspondingly, the first network device receives the first uplink signal sent by the terminal device with a second MCS in the first time period on the first uplink carrier.

Optionally, before S220, the method further includes: and receiving second indication information from the second network equipment, wherein the second indication information indicates that the uplink signal is transmitted in a second time period on a second uplink carrier.

It should be further noted that, the step of receiving the first indication information and the step of receiving the second indication information are not in sequence.

Optionally, the first indication information may be carried in a plurality of different signaling, which is not limited in this embodiment of the application. For example, the first indication information may be carried in Downlink Control Information (DCI) signaling.

Optionally, the second indication information may be carried in a plurality of different signaling, which is not limited in this embodiment of the application. For example, the second indication information may be carried in DCI signaling.

Optionally, the first uplink carrier and the second uplink carrier belong to different cell groups, which is not limited in this embodiment of the present application.

Optionally, the first indication information may be at least one bit, and the at least one bit indicates an index corresponding to the first MCS.

For example, the first indication information may be 5 bits in DCI, where the 5 bits correspond to one MCS index value in a higher layer configured MCS index table.

Optionally, before S210, the method further includes: the terminal device reports sending capability to the first network device, wherein the sending capability comprises the number of supported sending antennas and the number of maximum antenna ports (ports); correspondingly, the first network device schedules the terminal device according to the maximum port number supported by the terminal device, that is, the first network device sends the first indication information to the terminal device according to the sending capability.

It should be noted that, a terminal device supports 2 transmitting antennas, and it can be understood that the maximum port number supported by the terminal device is 2, that is, an uplink signal can be transmitted on 1 port (the corresponding layer number is 1) or an uplink signal can be transmitted on 2 ports (the corresponding layer number is 2); the terminal device supports 1 transmitting antenna, and it can be understood that the maximum port number supported by the terminal device is 1, that is, an uplink signal can be transmitted at 1 antenna port (the corresponding layer number is 1).

For example, taking a terminal device supporting EN-DC as an example, a typical transmit antenna architecture of the terminal device is 1 NR antenna plus 1 shared (LTE and NR shared) antenna, where the NR antenna is exclusively used for NR uplink transmission, and the shared antenna meets uplink transmission requirements of NR and LTE at different times by switching carrier frequency bands.

That is, the terminal device reports the supported maximum port number to the first network device as 2. Correspondingly, the first network device schedules the terminal device according to 2 ports.

Accordingly, before the terminal device receives the second indication information from the second network device, the terminal device may report the sending capability to the second network device, and the second network device sends the second indication information to the terminal device according to the sending capability.

Optionally, in S220, according to the first indication information, the first uplink signal is sent with the second MCS in the first time period on the first uplink carrier, which may be understood as: determining the second MCS according to the first indication information; transmitting a first uplink signal with the second MCS during the first time period on the first uplink carrier.

As an optional embodiment, the first indication information further indicates a first number of layers, and in S220, transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier may be understood as: and transmitting the first uplink signal by using a second MCS and a second number of layers in the first time period on the first uplink carrier, wherein an index corresponding to the first MCS is smaller than an index corresponding to the second MCS, and the first number of layers is larger than the second number of layers.

That is to say, in the scenario illustrated in fig. 2, since the number of available transmit antennas on the NR side of the terminal device is reduced from 2 to 1, that is, the port number for transmitting the NR side uplink signal is reduced from 2 to 1, when the scheduled first layer number is 2 layers, the second layer number of the first uplink signal finally transmitted by the terminal device can only be 1 layer, that is, the second layer number is smaller than the first layer number, so that the transmit power of the terminal device on the currently available port remains unchanged, and the transmit power of each symbol to be transmitted is not changed. Therefore, the terminal equipment can improve the MCS on the premise of reducing the layer number, and can maintain the number of the symbols to be transmitted unchanged, thereby maintaining the throughput unchanged.

As another alternative embodiment, the first indication information further indicates a first number of layers, and in S220, transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier may be understood as: and transmitting the first uplink signal by using a second MCS and a second number of layers in the first time period on the first uplink carrier, wherein an index corresponding to the first MCS is greater than an index corresponding to the second MCS, and the first number of layers is equal to the second number of layers.

Optionally, when the first layer number is equal to the second layer number, the first indication information further indicates a number of antenna ports, where the number of antenna ports is greater than 1, and the first layer number is equal to 1.

That is to say, in the scenario illustrated in fig. 2, since the number of available transmit antennas on the NR side of the terminal device is reduced from 2 to 1, that is, the port number for transmitting the NR side uplink signal is reduced from 2 to 1, when the scheduled first layer number is 1 layer, the second layer number of the first uplink signal finally transmitted by the terminal device is only 1 layer, that is, the second layer number is equal to the first layer number, so that the transmit power of the terminal device on the currently available port is reduced by half, and the divided transmit power on each symbol to be transmitted is reduced by half. Therefore, in order to prevent the decoding performance from deteriorating, the terminal device reduces the MCS while maintaining the number of layers, and can increase the transmission power that can be divided for each symbol to be transmitted, thereby improving the reliability of transmission.

Optionally, in S220, the terminal device may determine the second MCS in multiple ways, which is not limited in this embodiment.

As an optional embodiment, the terminal device may determine the second MCS according to the first indication information and a difference between an index corresponding to the second MCS and an index corresponding to the first MCS.

Optionally, a difference between an index corresponding to the second MCS and an index corresponding to the first MCS is predefined, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is configured through a high layer signaling, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is determined according to a predefined rule, which is not limited in this embodiment of the application.

Optionally, the third indication information may be carried in Radio Resource Control (RRC) signaling. For example, the third indication information may be an MCS-delta field added in a PUSCH-Config field of RRC signaling, where the MCS-delta field includes at least one bit, and a difference between an index corresponding to the second MCS and an index corresponding to the first MCS may be indicated by the at least one bit.

As another optional embodiment, the terminal device may further determine the second MCS according to the first indication information and a predefined second rule.

Optionally, the fifth indication information may be carried in RRC signaling.

For example, the fifth indication information may be a 1-bit MCS-Fallback enabled bit added in a PUSCH-Config field of RRC signaling, and the MCS may be re-determined according to the predefined second rule by the 1-bit enabling, e.g., when the enabled bit is "1", indicating that the MCS is re-determined according to the predefined second rule.

Optionally, the second rule may be: the index corresponding to the second MCS is a maximum value that can be obtained when the following formula 1 is satisfied:

N_info₂≤N_info₁(formula 1)

Wherein, N _ info₂＝N_RE·R₂·Q_m2·v₂，N_info₁＝N_RE·R₁·Q_m1·v₁N _ RE represents the number of all available Resource Elements (REs) on a Physical Uplink Shared Channel (PUSCH), v₁Indicates the number of layers corresponding to the first MCS, v₂Indicates the number of layers, Q, corresponding to the second MCS_m1Indicating the modulation order, Q, corresponding to the first MCS_m2And indicating the modulation order corresponding to the second MCS.

It should be noted that the modulation order and the number of layers corresponding to the first MCS may be obtained by querying an MCS index table through an index corresponding to the first MCS; the modulation order and the number of layers corresponding to the second MCS may be obtained by querying an MCS index table through an index corresponding to the second MCS, where the MCS index table includes a plurality of MCS indexes, and the modulation order and the number of layers corresponding to each MCS index in the plurality of MCS indexes.

For example, when the index corresponding to the first MCS is 5, R can be known from the MCS index table₁＝379，Q_m12, according to the predefined rule above, we can get: the index corresponding to the second MCS is 11, wherein R₂＝378，Q_m2＝4。

Specifically, in S220, the terminal device may perform the processing in the MCS index table according to the index corresponding to the second MCSAnd (4) performing table look-up operation so as to obtain the modulation order and the target code rate adopted during coding. Taking table5.1.3.1-2 in the protocol 38.214 as an example, when the index corresponding to the MCS is 10 (decimal), the modulation order Qm is 4(16QAM) corresponding to the 11 th row in the MCS index table, and the target code rate is 658/1024, the terminal device can be configured according to N _ info₂＝N_RE·R₂·Q_m2·v₂Determining the information bit length N _ info of the current scheduling₂。

Correspondingly, after modulation is performed according to the Qm, the terminal device maps modulation symbols to v layers, and when there are 10 modulation symbols to be transmitted after modulation, taking v ═ 2 as an example, the 10 modulation symbols are sequentially arranged according to a natural number, the modulation symbols at even positions are mapped to layer 1, and the modulation symbols at odd positions are mapped to layer 2.

It should be noted that the modulation order is used to indicate how many bits 1 modulation symbol is composed of, the value range of the modulation order is from 1 to 8, and each value corresponds to a modulation mode.

For example, the modulation schemes corresponding to the modulation orders from 1 to 8 are BPSK, QPSK, 8QAM, 16QAM, 32QAM, 64QAM, 128QAM, and 256 QAM.

It should be noted that the number of layers in this application may also be referred to as a number of spatial layers. Hereinafter, description is made in terms of the number of spatial layers. The number of layers or the number of spatial layers is a resource measurement of spatial dimension, and is supported by using multi-antenna transceiving, and symbols on different spatial layers can be transmitted on the same time-frequency resource through space division multiplexing, so that the throughput is improved.

Fig. 4 shows a schematic flowchart of a signal transmission method 300 provided in an embodiment of the present application, where the method 300 may be applied to a communication system as described in fig. 1, and the embodiment of the present application does not limit this.

Alternatively, the method 300 may be performed by a terminal device, which may be, for example, the terminal device 130 described in fig. 1. The method 300 may also be performed by a signaling device in a terminal device.

S310, receiving first indication information from a network device, where the first indication information indicates that a first MCS is adopted in a first time period on a first uplink carrier, the first time period includes N consecutive symbols, a time difference between a start time of an M-th symbol of the N consecutive symbols and an end time of a second time period is smaller than a first time length, and a time difference between a start time of an M + 1-th symbol of the N consecutive symbols and an end time of the second time period is greater than or equal to the first time length, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier; correspondingly, the network equipment sends the first indication information to the terminal equipment.

S320, when M is less than or equal to K, transmitting a first uplink signal to the network device on a partial symbol of the N consecutive symbols on the first uplink carrier, where the partial symbol is a symbol other than the first M symbols of the N consecutive symbols, and no signal is transmitted on the first M symbols; correspondingly, the network device receives the first uplink signal sent by the terminal device on the partial symbol.

S330, when M is greater than K, a first uplink signal is sent to the network device by adopting a second MCS on the N continuous symbols on the first uplink carrier; accordingly, the network device receives the first uplink signal sent by the terminal device with the second MCS on the N consecutive symbols on the first uplink carrier.

Wherein N, M, and K in S310 to S330 are positive integers.

Optionally, the method specifically includes: determining the size relationship between the M and the K; and determining to execute S320 or S330 according to the size relation between M and K.

It should be noted that the value of K may be understood as the maximum number of symbols of the non-transmitted signal supported by the network device at an acceptable error rate.

That is, when the number of received symbols is greater than N-K, the network device can decode to obtain the information carried in the original N symbols with an acceptable error rate, and therefore, when M is less than K, S320 is executed; when the number of received symbols is less than N-K, the network device cannot decode to obtain the information carried in the original N symbols, and therefore, when M is greater than K, S330 is performed.

It should be noted that S320 or S330 may be executed when M is equal to K, which is not limited in the embodiment of the present application.

Optionally, K is predefined, or K is configured through a higher layer signaling, or K is determined according to a predefined rule, which is not limited in this embodiment of the present application.

It should be noted that M may be understood as the maximum number of symbols occupied by the first time length in the first time period.

Alternatively, the value of M may be determined in various ways, which is not limited in this application.

For example, in connection with the scenario described in fig. 2, the first time period T when the terminal device is scheduled₁And a second time period T₂When shown in FIG. 5, T₁Including symbols 0 to 13, and 14 consecutive symbols, where the start time of symbol 3 (4 th symbol) and T₂Is less than T, and the start time of symbol 4 (the 5th symbol) and said T₂Is greater than or equal to said T, the value of M may be determined to be 4.

For another example, in conjunction with the scenario described in FIG. 2, the first time period T when the terminal device is scheduled₁And a second time period T₂When shown in FIG. 5, T₁Including symbols 0 to 13, and 14 consecutive symbols, where the end time of symbol 2 (3 rd symbol) and T₂Is less than T, and the end time of symbol 3 (4 th symbol) is less than T₂Is greater than or equal to said T, it may also be determined that M has a value of 4.

It should be further noted that, in S320, the terminal device may not send a signal on at least one of the first M symbols, where the at least one symbol is the first at least one of the first M symbols, and send a first uplink signal to the network device on a partial symbol of the N consecutive symbols on the first uplink carrier, where the partial symbol is a symbol other than a symbol where no signal is sent.

For example, when M is 4 in fig. 5, when K is 5, the terminal device may not transmit a signal on the first 4 symbols at most and may transmit a signal on T₁The first uplink signal is transmitted on the other symbols.

It should be noted that, when the terminal device determines to execute S330, the specific implementation process may refer to S220 in the method 200, and details are not described here for avoiding repetition.

Optionally, the method further comprises: and receiving second indication information from the second network equipment, wherein the second indication information indicates that the uplink signal is transmitted in a second time period on a second uplink carrier.

It should be noted that, for the description of the first indication information and the second indication information, reference may be made to related descriptions in the method 200, and in order to avoid repetition, details are not described here again.

Optionally, before S310, the method further includes: reporting sending capability to the first network device, wherein the sending capability comprises the number of supported sending antennas and the number of maximum antenna ports (ports); correspondingly, the first network device schedules the terminal device according to the maximum port number supported by the terminal device, that is, the first network device sends the first indication information to the terminal device according to the sending capability.

It should be noted that, for the description that the terminal device reports the sending capability to the first network device and the second network device, and the first network device and the second network device schedule the terminal device according to the sending capability, reference may be made to the related description in the method 200, and in order to avoid repetition, details are not repeated here.

Fig. 6 shows a schematic flowchart of a signal transmission method 400 provided in an embodiment of the present application, where the method 400 may be applied to a communication system as described in fig. 1, and the embodiment of the present application does not limit this.

Alternatively, the method 400 may be performed by a terminal device, which may be, for example, the terminal device 130 described in fig. 1. The method 400 may also be performed by a terminal device terminal signaling apparatus.

S410, receiving first indication information from a first network device, where the first indication information indicates that an uplink signal is transmitted using a first number of spatial layers in a first time period on a first uplink carrier, where the first time period includes N consecutive symbols; correspondingly, the first network equipment sends the first indication information to the terminal equipment.

S420, receiving second indication information from a second network device, where the second indication information indicates that an uplink signal is transmitted in a second time period on a second uplink carrier, and the second time period includes M consecutive symbols; correspondingly, the second network device sends the second indication information to the terminal device.

S430, when a time interval between a start time of the first time period and an end time of the second time period is less than a first time length, and the first time length includes at least one last symbol of the M consecutive symbols, and when the first number of spatial layers is greater than 1, or when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, transmitting a second uplink signal to the second network device on a part of the M consecutive symbols on the second uplink carrier, where the part of the M consecutive symbols is a symbol of the M consecutive symbols except for the at least one last symbol, and no signal is transmitted on the at least one last symbol; correspondingly, the second network device receives the second uplink signal sent by the terminal device on a partial symbol of the M consecutive symbols on the second uplink carrier.

S440, when a time interval between a start time of the first time period and an end time of the second time period is less than a first time length, and the first time length includes at least one preceding symbol of the N consecutive symbols, when the first number of spatial layers is greater than 1, or when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, transmitting a first uplink signal to the first network device on a partial symbol of the N consecutive symbols on the first uplink carrier, where the partial symbol of the N consecutive symbols is a symbol of the N consecutive symbols except for the at least one preceding symbol, and no signal is transmitted on the at least one preceding symbol; correspondingly, the first network device receives the first uplink signal sent by the terminal device on a partial symbol of the N consecutive symbols on the first uplink carrier.

It should be noted that the execution sequence of S410 and S420 is not in sequence, and the execution sequence of S430 and S440 is not in sequence.

Optionally, the method specifically includes: determining whether symbols occupied by the first length of time belong to a first time period or a second time period; according to the determination result, it is determined whether to perform S430, S440, or S430 and S440.

That is, if the first time length only occupies the symbols in the first time period, S440 is performed; if the first time length only occupies the symbols in the second time period, executing S430; if the first time length occupies symbols in the first and second time periods, S430 and S440 are performed.

Optionally, the second time period includes M consecutive symbols, the first time period includes N consecutive symbols, and when a first time length required for a carrier switching process of the terminal device includes at least one last symbol of the M consecutive symbols, and when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device sends a second uplink signal to the second network device on a part of the M consecutive symbols on the second uplink carrier, where the part of the M consecutive symbols is a symbol other than the at least one last symbol, and no signal is sent on the at least one last symbol.

Accordingly, the terminal device transmits a first uplink signal to the first network device on the N consecutive symbols on the first uplink carrier.

For example, in connection with the scenario described in fig. 2, the first time period T when the terminal device is scheduled₁And a second time period T₂As shown in fig. 7, occupies a second time period T during the first time period T₂In the case of symbol 12 and symbol 13, when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device is configured to perform a second time period T₂Is not sent on symbol 12 and symbol 13, and is in the second time period T₂To transmit a second uplink signal to the second network device on symbols 0 to 11, and in a first time period T₁And transmitting a first uplink signal to the first network device on symbols 0 to 13.

Optionally, the first time period includes N consecutive symbols, the second time period includes M consecutive symbols, and when a first time length required for a carrier switching process of the terminal device includes at least one preceding symbol of the N consecutive symbols, and when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device sends a first uplink signal to the first network device on a part of symbols of the N consecutive symbols on the first uplink carrier, where the part of symbols of the N consecutive symbols is a symbol other than the at least one preceding symbol, and no signal is sent on the at least one preceding symbol.

Accordingly, the terminal device sends a second uplink signal to the second network device on the M consecutive symbols on the second uplink carrier.

For example, in connection with the scenario described in fig. 2, the first time period T when the terminal device is scheduled₁And a firstTwo time periods T₂As shown in fig. 8, the first time period T is occupied for the first time length T₁In the case of symbol 0 and symbol 1, when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device is configured to perform a first time period T₁Is not transmitted on symbol 0 and symbol 1, and is transmitted for a first time period T₁To transmit a first uplink signal to the first network device on symbols 2 to 13, and in a second time period T₂And transmitting a second uplink signal to the second network device on symbols 0 to 13.

Optionally, the first time period includes N consecutive symbols, the second time period includes M consecutive symbols, and when a first time length required for a carrier switching process of the terminal device includes a last at least one symbol of the M consecutive symbols and a first at least one symbol of the N consecutive symbols, when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device sends a first uplink signal to the first network device on a part of the N consecutive symbols on the first uplink carrier, and sends a second uplink signal to the second network device on a part of the M consecutive symbols on the second uplink carrier, and the first at least one symbol and the last at least one symbol do not send signals, wherein, some of the N consecutive symbols are symbols other than the preceding at least one symbol, and some of the M consecutive symbols are symbols other than the following at least one symbol.

For example, in connection with the scenario described in fig. 2, the first time period T when the terminal device is scheduled₁And a second time period T₂As shown in fig. 9, the first time period T includes a first time period T₁Symbol 0 and a second time period T₂In the case of symbol 13, when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, the terminal device is in a first time period T₁Symbol 0 and second timeTime period T₂Is not signaled on symbol 13 and is transmitted for a first time period T₁To transmit a first uplink signal to the first network device on symbols 1 to 13, and in a second time period T₂And transmitting a second uplink signal to the second network device on the symbols 0 to 12.

It should be understood that, when the first time length includes the first W symbols in the first time period, that is, the terminal device does not transmit signals on the first W symbols (as shown in fig. 8), if W is greater than the maximum number of allowed missing symbols of the transmitted signals on the premise that the error rate corresponding to the decoding result is less than or equal to the target error rate, the normal decoding of the first network device may be affected.

Therefore, the terminal device may disperse part or all of the W symbols not sending signals on the side of the second network device, that is, the first time length includes last a symbols of the second time period and first B symbols of the first time period, so that B is less than the maximum number of allowed lost symbols for sending signals on the premise that the error rate corresponding to the decoding result is less than or equal to the target error rate, where a + B is W, a and W are positive integers, and B is an integer greater than or equal to 0.

Therefore, dispersing the W symbol portions (as shown in fig. 9) or all (as shown in fig. 7) of the non-transmitted signal at the second network device side is beneficial to improve the correct rate of decoding at the first network device side.

Optionally, when a time interval between a start time of the first time period and an end time of the second time period is less than a first time length, and when the number of the first spatial layers is equal to 1, the terminal device sends a third uplink signal to the first network device on the N consecutive symbols on the first uplink carrier, and sends a fourth uplink signal to the second network device on the M consecutive symbols on the second uplink carrier.

Optionally, before S410, the method further includes: reporting sending capability to the first network device, wherein the sending capability comprises the number of supported sending antennas and the number of maximum antenna ports (ports); correspondingly, the first network device schedules the terminal device according to the maximum port number supported by the terminal device, that is, the first network device sends the first indication information to the terminal device according to the sending capability.

Optionally, before S420, the method further includes: reporting sending capability to the second network device, wherein the sending capability comprises the number of supported sending antennas and the number of maximum antenna ports (ports); correspondingly, the second network device schedules the terminal device according to the maximum port number supported by the terminal device, that is, the second network device sends the second indication information to the terminal device according to the sending capability.

Fig. 10 shows a schematic flowchart of a signal transmission method 500 provided in an embodiment of the present application, where the method 500 may be applied to a communication system as described in fig. 1, and the embodiment of the present application does not limit this.

Alternatively, the method 500 may be performed by a terminal device, which may be, for example, the terminal device 130 described in fig. 1.

S510, receiving first indication information from a network device, where the first indication information indicates that a first MCS is adopted in a first time period on a first uplink carrier; correspondingly, the network equipment sends the first indication information to the terminal equipment.

S520, when a time interval between an end time of the first time period and a start time of a second time period is less than a first time length, and when a time of receiving the first indication information is later than a time of receiving second indication information, according to the first indication information, and according to the first indication information, sending a first uplink signal in a second MCS within the first time period on the first uplink carrier, where the second indication information indicates that a second uplink signal is sent in the second time period on a second uplink carrier; accordingly, the network device receives the first uplink signal sent by the terminal device with the second MCS within the first time period on the first uplink carrier.

S530, when a time interval between an end time of the first time period and a start time of a second time period is less than a first time length, and when a time of receiving the first indication information is earlier than a time of receiving second indication information, transmitting a first uplink signal to the network device on a partial symbol of N consecutive symbols included in the first uplink carrier, where the partial symbol is a symbol except for a first at least one symbol of the N consecutive symbols, and no signal is transmitted on the first at least one symbol, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier; correspondingly, the network device receives the first uplink signal sent by the terminal device on a part of the N consecutive symbols included in the first uplink carrier.

Optionally, before S520, the method further includes: and receiving second indication information from another network device, wherein the second indication information is used for indicating that the uplink signal is transmitted in a second time period on a second uplink carrier.

Optionally, the method specifically includes: determining the sequence of the time for receiving the first indication information and the time for receiving the second indication information; according to the sequence, it is determined whether to perform S520 or S530.

That is, in the scenario shown in fig. 2, if the time of receiving the first indication information is earlier than the time of receiving the second indication information, the signaling device has sufficient time to complete encoding using the re-determined MCS, and therefore S520 is performed; if the time of receiving the first indication information is later than the time of receiving the second indication information, the terminal device has insufficient time to complete the encoding with the re-determined MCS, and thus S530 is performed.

It should be noted that, when the terminal device determines to execute S520, the specific implementation process may refer to S220 in the method 200, and when the terminal device determines to execute S530, the specific implementation process may refer to S320 in the method 300, and details are not described here again to avoid repetition.

The signal processing method provided by the embodiment of the present application is described in detail above with reference to fig. 1 to 10, and the signal processing apparatus provided by the embodiment of the present application is described below with reference to fig. 11 to 18.

Fig. 11 shows a schematic block diagram of a signal transmission apparatus 600 provided in an embodiment of the present application. The apparatus 600 comprises:

a receiving unit 610, configured to receive first indication information from a first network device, where the first indication information indicates that a first modulation and coding scheme MCS is used in a first time period on a first uplink carrier;

a sending unit 620, configured to send a first uplink signal by using a second MCS in the first time period on the first uplink carrier according to the first indication information when a time interval between an end time of the first time period and a start time of a second time period is smaller than a first time length, or when a time interval between a start time of the first time period and an end time of a second time period is smaller than a first time length, where the first MCS is different from the second MCS, and the second time period is a time period for sending a second uplink signal on a second uplink carrier.

Optionally, the index corresponding to the first MCS is smaller than the index corresponding to the second MCS.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 620 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is greater than the second number of spatial layers.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 620 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is equal to the second number of spatial layers, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

Optionally, the first indication information further indicates a number of antenna ports, where the number of antenna ports is greater than 1, and the number of first spatial layers is equal to 1.

Optionally, the apparatus 600 further includes a determining unit 630, where the determining unit 630 is specifically configured to determine the second MCS according to the first indication information; and the transmitting unit 620 is specifically configured to transmit the first uplink signal with the second MCS in the first time period on the first uplink carrier.

Optionally, the determining unit 630 is specifically configured to determine the second MCS according to the first indication information and a difference between an index corresponding to the second MCS and an index corresponding to the first MCS.

Optionally, a difference between an index corresponding to the second MCS and an index corresponding to the first MCS is predefined, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is configured through a high layer signaling, or the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is determined according to a predefined rule.

Optionally, the first uplink carrier and the second uplink carrier belong to different cell groups.

It should be appreciated that the apparatus 600 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an Application Specific Integrated Circuit (ASIC), an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it may be understood by those skilled in the art that the apparatus 600 may be embodied as a signal processing apparatus in the foregoing method 200 to method 500 embodiments, and the apparatus 600 may be configured to perform each flow and/or step corresponding to the signal processing apparatus in the foregoing method 200 to method 500 embodiments, and is not described herein again to avoid repetition.

Fig. 12 shows a schematic block diagram of a signal transmission apparatus 700 provided in an embodiment of the present application. The signal transmission device 700 includes:

a receiving unit 710, configured to receive first indication information from a network device, where the first indication information indicates that a first MCS is adopted in a first time period on a first uplink carrier, the first time period includes N consecutive symbols, a time difference between a start time of an M-th symbol of the N consecutive symbols and an end time of a second time period is smaller than a first time length, and a time difference between a start time of an M + 1-th symbol of the N consecutive symbols and an end time of the second time period is greater than or equal to the first time length, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier; and

a transmitting unit 720, configured to transmit a first uplink signal to the network device on a partial symbol of the N consecutive symbols on the first uplink carrier when M is less than or equal to K, where the partial symbol is a symbol other than first M symbols of the N consecutive symbols, and no signal is transmitted on the first M symbols; when the M is larger than the K, a first uplink signal is sent to the network equipment by adopting a second MCS on the N continuous symbols on the first uplink carrier; wherein, N, M and K are both positive integers.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 720 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is greater than the second number of spatial layers.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 720 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is equal to the second number of spatial layers, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

Optionally, the apparatus 700 further includes a determining unit 730, where the determining unit 730 is specifically configured to determine the second MCS according to the first indication information; and the transmitting unit 720 is specifically configured to transmit the first uplink signal with the second MCS in the first time period on the first uplink carrier.

Optionally, the determining unit 730 is specifically configured to determine the second MCS according to the first indication information and a difference between an index corresponding to the second MCS and an index corresponding to the first MCS.

Optionally, K is predefined, or configured through higher layer signaling, or determined according to a predefined rule.

It should be understood that the signal transmission device 700 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an ASIC, an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it may be understood by those skilled in the art that the signal sending apparatus 700 may be specifically a signal sending apparatus in the embodiments of the method 200 to the method 500, and the signal sending apparatus 700 may be configured to execute each procedure and/or step corresponding to the signal sending apparatus in the embodiments of the method 200 to the method 500, and is not described herein again to avoid repetition.

In one possible design, the apparatus 700 may be replaced with a chip apparatus, such as a communication chip that may be used in the apparatus, for implementing the relevant functions of a processor in the apparatus. The chip device can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller for realizing related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

In one possible design, apparatus 700 may be a terminal device.

Fig. 13 shows a schematic block diagram of a signal transmission apparatus 800 provided in an embodiment of the present application. The signal transmission device 800 includes:

a receiving unit 810, configured to receive first indication information from a first network device, where the first indication information indicates that a first number of spatial layers is used in a first time period on a first uplink carrier, and the first time period includes N consecutive symbols; receiving second indication information from a second network device, wherein the second indication information indicates that the first number of spatial layers is adopted in a second time period on a second uplink carrier, and the second time period comprises M continuous symbols; and

a sending unit 820, configured to, when a time interval between a starting time of the first time period and an ending time of the second time period is smaller than a first time length, when the first number of spatial layers is greater than 1, or when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, send a first uplink signal to the first network device on a partial symbol of the N consecutive symbols on the first uplink carrier, where the partial symbol of the N consecutive symbols is a symbol other than a first at least one symbol of the N consecutive symbols, and no signal is sent on the first M symbols; and/or, when a time interval between a starting time of the first time period and an ending time of the second time period is smaller than a first time length, when the first number of spatial layers is greater than 1, or when the first number of spatial layers is equal to 1 and the number of antenna ports corresponding to the first number of spatial layers is greater than 1, transmitting a second uplink signal to the second network device on a part of the M consecutive symbols on the second uplink carrier, where the part of the M consecutive symbols is a symbol other than at least one following symbol of the M consecutive symbols, and no signal is transmitted on the at least one following symbol.

Optionally, the apparatus 800 further includes a determining unit 830, where the determining unit 830 is configured to determine that the first time length occupies a symbol in a first time period and/or occupies a symbol in a second time period, and the sending unit 820 is specifically configured to send the first uplink signal to the first network device on a part of symbols in the N consecutive symbols on the first uplink carrier when the first time length occupies a symbol in the first time period; and/or when the first time length occupies symbols in the second time period, transmitting the second uplink signal to the second network device on a part of symbols in the M consecutive symbols on the second uplink carrier.

Optionally, the sending unit 820 is specifically configured to, when a time interval between a starting time of the first time period and an ending time of the second time period is smaller than a first time length, send a third uplink signal to the first network device on the N consecutive symbols on the first uplink carrier and send a fourth uplink signal to the second network device on the M consecutive symbols on the second uplink carrier when the number of the first spatial layers is equal to 1.

It should be understood that the signal transmission apparatus 800 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an ASIC, an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an optional example, it may be understood by those skilled in the art that the signal sending apparatus 800 may be specifically a signal sending apparatus in the embodiments of the method 200 to the method 500, and the signal sending apparatus 800 may be configured to execute each procedure and/or step corresponding to the signal sending apparatus in the embodiments of the method 200 to the method 500, which is not described herein again to avoid repetition.

In one possible design, the apparatus 800 may be replaced with a chip apparatus, such as a communication chip that may be used in the apparatus, for implementing the relevant functions of a processor in the apparatus. The chip device can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller for realizing related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

In one possible design, apparatus 800 may be a terminal device.

Fig. 14 shows a schematic block diagram of a signal transmitting apparatus 900 provided in an embodiment of the present application. The signal transmission device 900 includes:

a receiving unit 910, configured to receive first indication information from a network device, where the first indication information indicates that a first modulation and coding scheme MCS is used in a first time period on a first uplink carrier; and

a sending unit 920, configured to, when a time interval between an end time of the first time period and a start time of a second time period is smaller than a first time length and a time of receiving the first indication information is later than a time of receiving second indication information, send, according to the first indication information and according to the first indication information, a first uplink signal to the network device using a second MCS in the first time period on the first uplink carrier, where the second indication information indicates that a second uplink signal is sent in the second time period on a second uplink carrier; when a time interval between an end time of the first time period and a start time of a second time period is less than a first time length, when a time for receiving the first indication information is earlier than a time for receiving second indication information, transmitting a first uplink signal to the network device on a partial symbol of N consecutive symbols included in the first uplink carrier, wherein the partial symbol is a symbol except for at least one preceding symbol of the N consecutive symbols, and no signal is transmitted on the at least one preceding symbol, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier.

Optionally, the apparatus 900 further includes a determining unit 930, where the determining unit 930 is configured to determine a sequence of a time when the first indication information is received and a time when the second indication information is received; the transmitting unit 920 is specifically configured to transmit, according to the first indication information and according to the first indication information, a first uplink signal to the network device in the first time period on the first uplink carrier by using the second MCS when a time of receiving the first indication information is later than a time of receiving the second indication information, and transmit, when the time of receiving the first indication information is earlier than the time of receiving the second indication information, the first uplink signal to the network device on a part of N consecutive symbols included in the first uplink carrier.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 920 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is greater than the second number of spatial layers.

Optionally, the first indication information further indicates a first number of spatial layers, and the sending unit 920 is specifically configured to send the first uplink signal by using a second MCS and a second number of spatial layers in the first time period on the first uplink carrier, where the first number of spatial layers is equal to the second number of spatial layers, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

Optionally, the apparatus further includes a determining unit, where the determining unit is specifically configured to determine the second MCS according to the first indication information; and the transmitting unit 920 is specifically configured to transmit a first uplink signal with the second MCS in the first time period on the first uplink carrier.

Optionally, the determining unit 910 is specifically configured to determine the second MCS according to the first indication information and a difference between an index corresponding to the second MCS and an index corresponding to the first MCS.

It should be understood that the signal transmission apparatus 900 herein is embodied in the form of a functional unit. The term "unit" herein may refer to an ASIC, an electronic circuit, a processor (e.g., a shared, dedicated, or group processor) and memory that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable components that support the described functionality. In an alternative example, it may be understood by those skilled in the art that the signal sending apparatus 900 may be embodied as a signal sending apparatus in the embodiments of the method 200 to the method 500, and the signal sending apparatus 900 may be configured to execute each procedure and/or step corresponding to the signal sending apparatus in the embodiments of the method 200 to the method 500, which is not described herein again to avoid repetition.

In one possible design, the apparatus 900 may be replaced with a chip apparatus, for example, a communication chip that may be used in the apparatus to implement the relevant functions of a processor in the apparatus. The chip device can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller for realizing related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

In one possible design, apparatus 900 may be a terminal device.

Fig. 15 shows a terminal device 1000 provided in this embodiment of the application, where the terminal device 1000 may include the signal sending apparatus 600 described in fig. 11, or the terminal device 1000 may be the signal sending apparatus 600 described in fig. 11. The apparatus 600 may employ a hardware architecture as shown in fig. 15. The terminal device 1000 may include a processor 1010, a transceiver 1020, and a memory 1030, the processor 1010, the transceiver 1020, and the memory 1030 communicating with each other through an internal connection path. The related functions implemented by the determining unit 630 in fig. 11 may be implemented by the processor 1010, and the related functions implemented by the receiving unit 610 and the transmitting unit 620 may be implemented by the processor 1010 controlling the transceiver 1020.

The processor 1010 may include one or more processors, such as one or more Central Processing Units (CPUs), and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The transceiver 1020 is used for transmitting and receiving data and/or information, as well as receiving data and/or information. The transceiver may include a transmitter for transmitting data and/or signals and a receiver for receiving data and/or signals.

The memory 1030 includes, but is not limited to, a Random Access Memory (RAM), a read-only memory (ROM), an Erasable Programmable Read Only Memory (EPROM), and a compact disc read-only memory (CD-ROM), and the memory 1030 is used for storing relevant instructions and data.

The memory 1030 is used to store program codes and data for the devices, which may be separate devices or integrated into the processor 1010.

Specifically, the processor 1010 is configured to control the transceiver to perform signal transmission with a first network device and a second network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 15 only shows a simplified design of the device. In practical applications, the apparatuses may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all apparatuses that can implement the present application are within the protection scope of the present application.

In one possible design, terminal device 1000 can be replaced with a chip device, such as a communication chip usable in an apparatus for implementing the relevant functions of a processor in the apparatus. The chip device can be a field programmable gate array, a special integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit and a microcontroller for realizing related functions, and can also adopt a programmable controller or other integrated chips. The chip may optionally include one or more memories for storing program code that, when executed, causes the processor to implement corresponding functions.

In one possible design, apparatus 1000 may be a terminal device.

Fig. 16 shows a terminal device 1100 provided in this embodiment, where the terminal device 1100 may be the signal transmission apparatus 700 described in fig. 12, or the terminal device 1100 may include the signal transmission apparatus 700 described in fig. 12. The apparatus 700 may employ a hardware architecture as shown in fig. 16. The terminal device 1100 may include a processor 1110, a transceiver 1120, and a memory 1130, and the processor 1110, the transceiver 1120, and the memory 1130 may communicate with each other through an internal connection path. The related functions implemented by the determination unit 730 in fig. 12 may be implemented by the processor 1110, and the related functions implemented by the reception unit 710 and the transmission unit 720 may be implemented by the processor 1110 controlling the transceiver 1120

The processor 1110 may include one or more processors, for example, one or more CPUs, and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The transceiver 1120 is used for transmitting and receiving data and/or information, and receiving data and/or information. The transceiver may include a transmitter for transmitting data and/or information and a receiver for receiving data and/or information.

The memory 1130 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 1130 is used for storing relevant instructions and data.

The memory 1130 is used to store program codes and data for the devices, and may be a separate device or integrated into the processor 1110.

Specifically, the processor 1110 is configured to control the transceiver to perform signal transmission with a first network device and a second network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 16 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all devices that can implement the present application are within the protection scope of the present application.

Fig. 17 shows a terminal device 1200 provided in this embodiment, where the terminal device 1200 may be the signal sending apparatus 800 described in fig. 13, or the terminal device 1200 may include the signal sending apparatus 800 described in fig. 13. The apparatus 800 may employ a hardware architecture as shown in fig. 17. The terminal device 1200 may include a processor 1210, a transceiver 1220, and a memory 1230, the processor 1210, the transceiver 1220, and the memory 1230 communicating with each other through an internal connection path. The related functions implemented by the determining unit 830 in fig. 13 may be implemented by the processor 1210, and the related functions implemented by the receiving unit 810 and the transmitting unit 820 may be implemented by the processor 1210 controlling the transceiver 1220

The processor 1210 may include one or more processors, for example, one or more CPUs, and in the case of one CPU, the CPU may be a single-core CPU or a multi-core CPU.

The transceiver 1220 is used for transmitting and receiving data and/or information, and receiving data and/or information. The transceiver may include a transmitter for transmitting data and/or information and a receiver for receiving data and/or information.

The memory 1230 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 1230 is used to store the relevant instructions and data.

The memory 1230 is used to store program codes and data for the devices, which can be separate devices or integrated into the processor 1210.

Specifically, the processor 1210 is configured to control the transceiver to perform signal transmission with a first network device and a second network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 17 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all devices that can implement the present application are within the protection scope of the present application.

Fig. 18 shows a terminal device 1300 provided in this embodiment, where the terminal device 1300 may be the signal transmission apparatus 900 described in fig. 14, or the terminal device 1300 may include the signal transmission apparatus 900 described in fig. 14. The terminal device 900 may employ a hardware architecture as shown in fig. 18. The terminal device 1300 may include a processor 1310, a transceiver 1320, and a memory 1330, the processor 1310, the transceiver 1320, and the memory 1330 communicating with each other through an internal connection path. The related functions implemented by the determining unit 930 in fig. 14 may be implemented by the processor 1310, and the related functions implemented by the receiving unit 910 and the transmitting unit 920 may be implemented by the processor 1310 controlling the transceiver 1320

The processor 1310 may include one or more processors, such as one or more CPUs, which may be a single core CPU or a multi-core CPU in the case of one CPU.

The transceiver 1320 is used to transmit and receive data and/or information, and to receive data and/or information. The transceiver may include a transmitter for transmitting data and/or information and a receiver for receiving data and/or information.

The memory 1330 includes, but is not limited to, RAM, ROM, EPROM, CD-ROM, and the memory 1330 is used to store relevant instructions and data.

The memory 1330 is used to store program codes and data for the devices, which may be separate devices or integrated into the processor 1310.

Specifically, the processor 1310 is configured to control the transceiver to perform signal transmission with a first network device and a second network device. Specifically, reference may be made to the description of the method embodiment, which is not repeated herein.

It will be appreciated that fig. 18 only shows a simplified design of the terminal device. In practical applications, the terminal devices may also respectively include other necessary elements, including but not limited to any number of transceivers, processors, controllers, memories, etc., and all devices that can implement the present application are within the protection scope of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. 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 application.

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.

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 be in an electrical, mechanical or other form.

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.

In addition, functional units in the embodiments of the present application 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 functions, if implemented in the form of software functional units 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 application or portions thereof that substantially contribute to the prior art may 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 application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A signal transmission method, comprising:

2. A signal transmission method, comprising:

wherein, N, M and K are both positive integers.

3. The method of claim 1 or 2, wherein the index corresponding to the first MCS is smaller than the index corresponding to the second MCS.

4. The method of claim 3, wherein the first indication information further indicates a first number of layers, and wherein transmitting the first uplink signal with the second MCS for the first time period on the first uplink carrier comprises:

and transmitting the first uplink signal by adopting a second MCS and a second layer number in the first time period on the first uplink carrier, wherein the first layer number is greater than the second layer number.

5. The method of claim 1 or 2, wherein the first indication information further indicates a first layer number, and wherein the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier comprises:

and transmitting the first uplink signal by using a second MCS and a second layer number within the first time period on the first uplink carrier, wherein the first layer number is equal to the second layer number, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

6. The method of claim 5, wherein the first indication information further indicates a number of antenna ports, wherein the number of antenna ports is greater than 1, and wherein the first layer number is equal to 1.

7. The method of any of claims 1 to 6, wherein the transmitting a first uplink signal with a second MCS in the first time period on the first uplink carrier according to the first indication information comprises:

determining the second MCS according to the first indication information; and

transmitting a first uplink signal with the second MCS during the first time period on the first uplink carrier.

8. The method of claim 7, wherein the determining the second MCS according to the first indication information comprises:

and determining the second MCS according to the first indication information and the difference value of the index corresponding to the second MCS and the index corresponding to the first MCS.

9. The method of claim 8,

the difference between the index corresponding to the second MCS and the index corresponding to the first MCS is predefined, or

The difference between the index corresponding to the second MCS and the index corresponding to the first MCS is configured by higher layer signaling, or

The difference between the index corresponding to the second MCS and the index corresponding to the first MCS is determined according to a predefined rule.

10. The method according to any of claims 1-9, wherein the first uplink carrier and the second uplink carrier belong to different cell groups.

11. The method of claim 2,

said K is predefined, or

The K is configured by higher layer signaling, or

The K is determined according to a predefined rule.

12. A terminal device, comprising: a processor, and a receiver and a transmitter coupled to the processor, wherein,

the receiver is configured to receive first indication information from a first network device, where the first indication information indicates that a first Modulation and Coding Scheme (MCS) is used in a first time period on a first uplink carrier;

the transmitter is configured to, when a time interval between an end time of the first time period and a start time of the second time period is smaller than a first time length, or when a time interval between the start time of the first time period and the end time of the second time period is smaller than the first time length, transmit, according to the first indication information, a first uplink signal in the first time period on the first uplink carrier by using a second MCS, where the first MCS is different from the second MCS, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier.

13. A terminal device, comprising: a processor, and a receiver and a transmitter coupled to the processor, wherein,

the receiver is configured to receive first indication information from a network device, where the first indication information indicates that a first MCS is adopted in a first time period on a first uplink carrier, the first time period includes N consecutive symbols, a time difference between a start time of an M-th symbol of the N consecutive symbols and an end time of a second time period is smaller than a first time length, and a time difference between a start time of an M + 1-th symbol of the N consecutive symbols and an end time of the second time period is greater than or equal to the first time length, and the second time period is a time period for transmitting a second uplink signal on a second uplink carrier; and

the transmitter is configured to transmit a first uplink signal to the network device on a partial symbol of the N consecutive symbols on the first uplink carrier when M is less than or equal to K, where the partial symbol is a symbol other than first M symbols of the N consecutive symbols, and no signal is transmitted on the first M symbols; when the M is larger than the K, a first uplink signal is sent to the network equipment by adopting a second MCS on the N continuous symbols on the first uplink carrier; wherein, N, M and K are both positive integers.

14. The apparatus of claim 12 or 13, wherein the index corresponding to the first MCS is smaller than the index corresponding to the second MCS.

15. The apparatus of claim 14, wherein the first indication information further indicates a first number of layers,

the first uplink signal is transmitted in the first time period on the first uplink carrier by using a second MCS and a second number of layers, wherein the first number of layers is greater than the second number of layers.

16. The apparatus according to claim 12 or 13, wherein the first indication information further indicates a first layer number,

the first uplink signal is sent by using a second MCS and a second number of layers in the first time period on the first uplink carrier, where the first number of layers is equal to the second number of layers, and an index corresponding to the first MCS is greater than an index corresponding to the second MCS.

17. The apparatus of claim 16, wherein the first indication information further indicates a number of antenna ports, wherein the number of antenna ports is greater than 1, and wherein the first layer number is equal to 1.

18. The apparatus of any of claims 12 to 17, wherein the processor is configured to determine the second MCS according to the first indication information; and

the transmitter is configured to transmit a first uplink signal using the second MCS within the first time period on the first uplink carrier.

19. The apparatus of claim 18, wherein the processor is configured to determine the second MCS as follows:

20. The apparatus of claim 19,

21. The apparatus of any of claims 12-20, wherein the first uplink carrier and the second uplink carrier belong to different cell groups.

22. The apparatus of claim 13,

said K is predefined, or

The K is configured by higher layer signaling, or

The K is determined according to a predefined rule.

23. A signal transmission arrangement in a terminal device, comprising a processor and a memory, the processor and the memory being coupled, the processor being configured to perform the method of any of claims 1 to 11.

24. A terminal device, characterized in that it comprises a signal transmission apparatus as claimed in claim 23.

25. A chip apparatus, comprising: an input interface, an output interface, at least one processor, a memory, said input interface, said output interface, said processor and said memory communicating with each other via an internal connection path, said processor being configured to execute code in said memory, wherein when said processor executes said code, said chip means implements the method of any of the preceding claims 1 to 11.

26. A computer-readable storage medium for storing a computer program, characterized in that the computer program comprises instructions for implementing the method of any of the preceding claims 1 to 11.

27. A computer program product comprising instructions which, when run on a computer, cause the computer to carry out the method of any one of claims 1 to 11.