WO2021031874A1

WO2021031874A1 - Signal transmission method and communication apparatus

Info

Publication number: WO2021031874A1
Application number: PCT/CN2020/107624
Authority: WO
Inventors: 王磊; 王闻今; 高西奇
Original assignee: 华为技术有限公司
Priority date: 2019-08-16
Filing date: 2020-08-07
Publication date: 2021-02-25
Also published as: CN112399457A

Abstract

The embodiments of the present application disclose a signal transmission method and a communication apparatus. Said method comprises: receiving a first downlink signal; determining a first uplink signal from a first uplink signal group; and sending the first uplink signal, wherein the first uplink signal group corresponds to the first downlink signal, wherein the first uplink signal group is included in M uplink signal groups, and the M uplink signal groups are grouped according to one or more of the following parameters of the uplink signal: a sequence generation parameter, a cyclic shift value, a spreading code, and a time-frequency resource position, M being a positive integer. The implementation of the method provided in the embodiments of the present application reduces interference between uplink signals.

Description

Signal transmission method and communication device

This application claims the priority of a Chinese patent application filed with the State Intellectual Property Office on August 16, 2019, the application number is 201910762048.9, and the application name is "signal transmission method and communication device", the entire content of which is incorporated into this application by reference .

Technical field

The present invention relates to the field of communication technology, in particular to a signal transmission method and communication device.

Background technique

The scenarios involved in wireless communication systems include but are not limited to enhanced mobile broadband (eMMB), ultra-reliable low-latency communications (URLLC), and massive machine type communications (mMTC) . Among them, the eMBB scenario emphasizes high throughput, the URLLC scenario emphasizes high reliability and low latency, and the mMTC scenario emphasizes massive connections. In the mMTC scenario, there will be a large number of potential user equipment (UE) to be accessed in the cell.

Summary of the invention

The embodiments of the present application provide a signal transmission method and a communication device, which can reduce interference between uplink signals.

In a first aspect, an embodiment of the present application provides a signal transmission method. The method includes: receiving a first downlink signal, and determining a first uplink signal from a first uplink signal packet, and the first uplink signal packet is related to the first uplink signal packet. The downlink signal corresponds, and the first uplink signal is sent. By implementing the method provided in the embodiments of this application, by binding the downlink signal and the uplink signal grouping, it can be ensured that UEs with similar channel characteristics use orthogonal or low-correlation uplink signals, which can reduce the interference of uplink signals and greatly improve the performance of network equipment. Uplink signal detection performance. In the existing method, all UEs in a cell select uplink signals from the same uplink signal set, so the interference between these uplink signals may be relatively high, especially when the channel characteristics of the UEs are relatively close. serious. In the embodiment of the present application, through the correspondence between downlink signals and uplink signal groups, the uplink signals selected by UEs with similar channel characteristics are as orthogonal as possible, thereby reducing uplink signal interference and improving the overall performance of the system.

Wherein, the correspondence in "the first uplink signal group corresponds to the first downlink signal" may also be referred to as association, mapping, binding, and matching.

In a possible design, the first downlink signal is included in N downlink signals. The N downlink signals can be distinguished from each other by one or more of several parameters: sequence generation parameters, time-frequency resources, spreading codes, and cyclic shift values. Wherein, N is a positive integer, such as an integer of 1, 2, 3 or greater, which is not limited in the embodiment of the present application. One possible application scenario where N is configured as 1 is: the number of users in the cell is small.

In a possible design, different sequence generation parameters can be used to distinguish the above N downlink signals. Exemplarily, the N downlink signals are respectively generated by N different sequence generation parameters. The sequence may be a pseudo-noise (PN) sequence, a ZC (zadoff-chu) sequence or other types of sequences. For a sequence, different sequence generation parameters include: the sequence generation formula is different; or the sequence generation formula is the same, but the parameters in the formula are different. The same sequence generation parameters include: the sequence generation formula is the same, and the parameters in the formula are also the same. For example, for the ZC sequence, the ZC sequence generated using different roots is the ZC sequence generated using different sequence generation parameters. For the PN sequence, the PN sequence generated by using different initial values is the PN sequence generated by using different sequence generation parameters.

In a possible design, the above N downlink signals can be distinguished by different cyclic shift values. Exemplarily, the N downlink signals are N sequences respectively generated from the same basic sequence using N cyclic shift values. Among them, the basic sequence refers to a sequence generated by a sequence generation formula, such as a ZC sequence or a PN sequence. For a ZC sequence, the basic sequence can also be called a root sequence, and the basic sequence has not undergone operations such as cyclic shift and spreading.

In a possible design, the above-mentioned N downlink signals can be distinguished by different time-frequency resources. For example, the N downlink signals are respectively mapped on the N time-frequency resources.

In a possible design, the above N downlink signals can be distinguished by different spreading codes. Exemplarily, the N downlink signals are N sequences generated from the same basic sequence using N spreading codes.

In a possible design, the first uplink signal packet is included in M uplink signal packets. For a group of uplink signals in the M uplink signal groups, the group of uplink signals includes Q uplink signals, and one of the Q uplink signals is a basic sequence corresponding to the group of uplink signals. Obtained by cyclic shift, or the one uplink signal is obtained by spreading a basic sequence corresponding to the group of uplink signals, or the one uplink signal is obtained by cyclic shifting a basic sequence corresponding to the group of uplink signals And spread spectrum. The one uplink signal is mapped to the corresponding time-frequency resource for transmission. Wherein, M and Q are positive integers, and the number of uplink signals included in any two different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application.

In a possible design, different sequence generation parameters can be used to distinguish the foregoing M uplink signal groups.

Exemplarily, the M uplink signal groups correspond to M different sequence generation parameters one by one. For example, the M sequence generation parameters may be M ZC roots, or the M sequence generation parameters may be the initial values of M PN sequences. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: cyclic shift value, time-frequency resource, and spreading code.

Exemplarily, one uplink signal group in the M uplink signal groups corresponds to at least one sequence generation parameter, and sequence generation parameters corresponding to different uplink signal groups are different. The number of sequence generation parameters corresponding to any two different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: sequence generation parameters, cyclic shift values, time-frequency resources, and spreading codes.

Grouping the uplink signals can try to ensure that the uplink signals in the group remain orthogonal or approximately remain orthogonal, so that UEs with similar channel characteristics (such as angle-of-arrival (AOA)) can select uplinks from the same group Signals are sent, and multiple uplink signals in the same group are orthogonal or have relatively low correlation, which can reduce interference between uplink signals.

In a possible design, different cyclic shift values can be used to distinguish the foregoing M uplink signal groups.

Exemplarily, the M uplink signal groups correspond to M different cyclic shift values one by one. For example, the basic sequence is a ZC sequence, the roots of the ZC sequences corresponding to the M uplink signal groups are the same, and the M uplink signal groups are M groups of sequences generated by the same basic sequence using M cyclic shift values, or Multiple basic sequences are generated by using less than M cyclic shift values. Multiple uplink signals in each uplink signal group correspond to the same cyclic shift value. Different uplink signal groups correspond to different cyclic shift values. . For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, spreading code, and time-frequency resource.

Exemplarily, one uplink signal group in the M uplink signal groups corresponds to at least one cyclic shift value, and different uplink signal groups correspond to different cyclic shift values. Wherein, the number of cyclic shift values corresponding to any two different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, cyclic shift value, time-frequency resource, and spreading code.

Grouping uplink signals by cyclic shift values has another advantage. If the basic sequence generates multiple uplink signals through multiple different cyclic shifts, when the uplink access timing error varies widely, it may exceed the minimum The interval of the cyclic shift value will cause the access performance to decrease. Grouping by the cyclic shift value can ensure that the uplink signal in the group corresponds to only one or a small number of cyclic shift values, expand the interval between multiple cyclic shift values, and ensure the performance of access. Among them, the uplink access timing error has a large variation range. It can also be understood that the variation range of the uplink access timing error is greater than the interval of the cyclic shift value. The interval of the cyclic shift value can be understood as the difference of the cyclic shift value. .

In a possible design, different time-frequency resources can be used to distinguish the foregoing M uplink signal groups.

Exemplarily, the M uplink signal groups correspond to M different time-frequency resources one by one. The uplink signals in different uplink signal groups are respectively mapped to different time-frequency resources. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, cyclic shift value and spreading code.

Exemplarily, one uplink signal group in the M uplink signal groups corresponds to at least one time-frequency resource, and different uplink signal groups correspond to different time-frequency resources. Wherein, the number of time-frequency resources corresponding to any two different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, cyclic shift value, time-frequency resource, and spreading code.

Different time-frequency resources are used to distinguish different uplink signal groups, which can reduce the interference between uplink signals between groups and ensure the orthogonality of uplink signals between groups as much as possible, so that more identical sequences can be configured as uplink signals between groups , So that more UEs can transmit uplink signals simultaneously in the cell, which can increase the system data transmission rate.

In a possible design, different spreading codes can be used to distinguish the foregoing M uplink signal groups.

Exemplarily, the M uplink signal groups correspond to M different spreading codes one by one. For example, the basic sequence is a ZC sequence, the roots of the ZC sequences corresponding to the M uplink signal groups are the same, and the M uplink signal groups are M groups of sequences generated by using M spreading codes for the same basic sequence. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, cyclic shift value, and time-frequency resource.

Exemplarily, one uplink signal group in the M uplink signal groups corresponds to at least one spreading code, and different uplink signal groups correspond to different spreading codes. Wherein, the number of spreading codes corresponding to any two different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application. For the same uplink signal group, at least one of the following parameters of different uplink signals in the uplink signal group is different: basic sequence, cyclic shift value, time-frequency resource, and spreading code.

Different uplink signal groups can be distinguished by different spreading codes, which can reduce the interference between uplink signals between groups, and ensure the orthogonality of uplink signals between groups as much as possible, so that more identical sequences can be configured as uplink signals between groups , So that more UEs can transmit uplink signals simultaneously in the cell, which can increase the system data transmission rate.

In a possible design, two, three or four parameters of sequence generation parameters, cyclic shift values, time-frequency resources, and spreading codes can be combined to distinguish the foregoing M uplink signal groups.

Exemplarily, the foregoing M uplink signal groups may be distinguished by different sequence generation parameters and/or different time-frequency resources; or, the foregoing M uplink signal groups may be distinguished by different sequence generation parameters and/or different spreading codes. Uplink signal grouping; or, the above M uplink signal groups can be distinguished by different time-frequency resources and/or different spreading codes; or, different time-frequency resources, different sequence generation parameters, and/or different To distinguish the above M uplink signal packets.

In a possible design, the method further includes: receiving configuration parameters of N downlink signals, where the N downlink signals include the aforementioned first downlink signal, where N is a positive integer. Among them, for one of the N downlink signals, the configuration parameter of this downlink signal is used to indicate at least one of the following: the identifier of the downlink signal, the time domain resource parameter of the downlink signal, and the downlink signal The frequency domain resource parameters of the downlink signal, the sequence generation parameter of the downlink signal, the spreading code parameter of the downlink signal, and the cyclic shift parameter of the downlink signal. By implementing the method provided in the embodiment of the present application, the configuration parameters of the above N downlink signals can be configured by the network device, which enables more flexible configuration. Optionally, the sequence generation parameters include one or more of the following: the type of sequence generation mode, and the generation parameters. For example, the types of sequence generation methods include ZC sequence generation methods or PN sequence generation methods. If it is a ZC sequence generation method, the generation parameter is the root of the ZC sequence; if it is a PN sequence generation method, the generation parameter is the initial value of the PN sequence. The parameter of the spreading code includes the index of the spreading code. The parameter of the cyclic shift includes the index of the cyclic shift value.

In a possible design, the method further includes: receiving configuration parameters of M uplink signal packets, the M uplink signal packets include the foregoing first uplink signal packet, and M is a positive integer. For one uplink signal group in the M uplink signal groups, the configuration parameter of the one uplink signal group is used to indicate at least one of the following: the identifier of the one uplink signal group, the time domain of each uplink signal in the one uplink signal group Resource parameters, frequency domain resource parameters of each uplink signal in the one uplink signal group, sequence generation parameters of each uplink signal in the one uplink signal group, parameters of the spreading code of each uplink signal in the one uplink signal group, and the A parameter of the cyclic shift of each uplink signal in an uplink signal group. By implementing the method provided in the embodiment of the present application, the configuration parameters of the foregoing M uplink signal groups can be configured by the network device, so that the configuration is more flexible.

In a possible design, the configuration parameter of the one downlink signal is also used to indicate the uplink signal group corresponding to this downlink signal.

In a possible design, the configuration parameter of the above-mentioned uplink signal group is also used to indicate the downlink signal corresponding to this uplink signal group.

In a possible design, the method further includes: receiving first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and M uplink signal groups, and among the N downlink signals The first downlink signal is included, and the M uplink signal packets include the first uplink signal packet. By implementing the method provided in the embodiment of the present application, the correspondence between the foregoing N downlink signals and the foregoing M uplink signal groups can be configured by a network device, so that the configuration is more flexible.

In a possible design, the time domain resource parameters of different uplink signals in the first uplink signal group are different, and/or the frequency domain resource parameters of different uplink signals in the first uplink signal group are different, and/or, The sequence generation parameters of the different uplink signals in the first uplink signal group are different, and/or the parameters of the spreading codes of the different uplink signals in the first uplink signal group are different, and/or, the parameters in the first uplink signal group are different The parameters of the cyclic shift of the uplink signal are different.

In a possible design, the above uplink signal includes a random access preamble (preamble) or a demodulation reference signal (DMRS).

In a possible design, the aforementioned downlink signal includes a reference signal, a synchronization signal, or a broadcast signal.

In a possible design, the foregoing receiving configuration parameters of N downlink signals includes: receiving radio resource control (radio resource control, RRC) signaling, where the RRC carries the configuration parameters of the N downlink signals.

In a possible design, the foregoing receiving configuration parameters of the M uplink signal packets includes: receiving RRC signaling, where the RRC carries the configuration parameters of the M uplink signal packets.

In a possible design, the foregoing first signaling includes RRC signaling, and the RRC carries the correspondence between the foregoing N downlink signals and the foregoing M uplink signal groups.

In a possible design, the above-mentioned RRC signaling includes system information (SIB) or dedicated RRC signaling.

In a possible design, the execution subject of the method provided in the first aspect may be a terminal device or a chip system inside the terminal device.

Optionally, the identifier of the downlink signal may also be referred to as the index of the downlink signal. The identifier of the uplink signal group may also be referred to as the index of the uplink signal group.

In a second aspect, an embodiment of the present application provides a signal transmission method. The method includes: sending a first downlink signal, receiving a first uplink signal, the first uplink signal is included in a first uplink signal packet, and the first The uplink signal group corresponds to the first downlink signal.

In a possible design, the method further includes: sending configuration parameters of N downlink signals, where the N downlink signals include the first downlink signal, where N is a positive integer. For the reception of this configuration parameter, please refer to the corresponding description in the first aspect, which will not be repeated here.

In a possible design, the method further includes: sending configuration parameters of M uplink signal packets, where the M uplink signal packets include the foregoing first uplink signal packet, and M is a positive integer. For the reception of this configuration parameter, please refer to the corresponding description in the first aspect, which will not be repeated here.

In a possible design, the configuration parameter of this downlink signal is also used to indicate the uplink signal group corresponding to this downlink signal.

In a possible design, the configuration parameter of this uplink signal group is also used to indicate the downlink signal corresponding to this uplink signal group.

In a possible design, the method of the embodiment of the present application further includes: sending first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and M uplink signal groups, and the N The downlink signal includes the first downlink signal, and the M uplink signal packets include the first uplink signal packet.

In a possible design, the time domain resource parameters of different uplink signals in the first uplink signal group are different, and/or the frequency domain resource parameters of different uplink signals in the first uplink signal group are different, and/ Or, the sequence generation parameters of different uplink signals in the first uplink signal group are different, and/or the parameters of the spreading codes of different uplink signals in the first uplink signal group are different, and/or, the first uplink signal group The cyclic shift parameters of different uplink signals in the signal group are different.

In a possible design, the aforementioned first uplink signal includes a random access preamble sequence or a demodulation reference signal DMRS.

In a possible design, sending the configuration parameters of the N downlink signals includes: sending RRC signaling, and the RRC carries the configuration parameters of the N downlink signals.

In a possible design, sending the configuration parameters of the M uplink signal packets includes sending RRC signaling, and the RRC carries the configuration parameters of the M uplink signal packets.

In a possible design, the foregoing RRC signaling includes system message SIB or dedicated RRC signaling.

In a possible design, the execution subject of the method provided in the first aspect may be a network device (such as a base station) or a chip system inside the network device.

For the manner of distinguishing N downlink signals and the manner of dividing M uplink signal groups involved in the embodiments of the present application, reference may be made to the related description of the first aspect above, and details are not repeated here.

In the third aspect, the embodiments of the present application provide a device, which may be a terminal device, a device in a terminal device, or a device that can be matched and used with the terminal device. In one design, the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the first aspect. The modules may be hardware circuits, software, or hardware circuits combined with software. . In one design, the device may include a processing unit and a communication unit. Illustratively,

A communication unit for receiving the first downlink signal;

A processing unit, configured to determine a first uplink signal from a first uplink signal group, where the first uplink signal group corresponds to the first downlink signal;

The aforementioned communication unit is also used to send the first uplink signal.

In a possible design, the specific content of the grouping of the first downlink signal and the first uplink signal may refer to the specific description of the grouping of the first downlink signal and the first uplink signal in the first aspect, which will not be repeated here.

In a possible design, the aforementioned communication unit is further configured to receive configuration parameters of N downlink signals, and the aforementioned N downlink signals include the aforementioned first downlink signal, where N is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the first aspect, which is not repeated here.

In a possible design, the foregoing communication unit is further configured to receive configuration parameters of M uplink signal packets, where the M uplink signal packets include the first uplink signal packet, and M is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the first aspect, which is not repeated here.

In a possible design, the above-mentioned communication unit is further configured to receive first signaling, and the first signaling is used to indicate the correspondence between N downlink signals and M uplink signal groups. The N downlink signals include the first downlink signal, and the M uplink signal packets include the first uplink signal packet

In a fourth aspect, an embodiment of the present application provides a device, which may be a network device, a device in a network device, or a device that can be used in matching with the network device. In one design, the device may include modules that perform one-to-one correspondence of the methods/operations/steps/actions described in the second aspect. The modules may be hardware circuits, software, or hardware circuits combined with software. . In one design, the device may include a processing unit and a communication unit. Illustratively,

A communication unit for sending the first downlink signal;

The communication unit is further configured to receive a first uplink signal, the first uplink signal is included in a first uplink signal group, and the first uplink signal group corresponds to the first downlink signal.

In a possible design, the specific content of the grouping of the first downlink signal and the first uplink signal may refer to the specific description of the grouping of the first downlink signal and the first uplink signal in the second aspect, which will not be repeated here.

In a possible design, the foregoing communication unit is further configured to send configuration parameters of N downlink signals, and the foregoing N downlink signals include the foregoing first downlink signal, where N is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the second aspect, which will not be repeated here.

In a possible design, the above-mentioned communication unit is further configured to send configuration parameters of M uplink signal packets, the M uplink signal packets include the first uplink signal packet, and M is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the second aspect, which will not be repeated here.

In a possible design, the aforementioned communication unit is also used to send first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and M uplink signal groups. The N downlink signals include the first downlink signal, and the M uplink signal packets include the first uplink signal packet

In a fifth aspect, an embodiment of the present application provides a device, which includes a processor, configured to implement the method described in the first aspect. The device may also include a memory for storing instructions and data. The memory is coupled or integrated with the processor, and when the processor executes the instructions stored in the memory, the method described in the first aspect can be implemented. The device may also include a communication interface, which is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface, and other devices may be Internet equipment. In a possible device, the device includes:

Memory, used to store program instructions;

A processor, configured to use a communication interface to receive the first downlink signal;

The processor is further configured to determine a first uplink signal from a first uplink signal group, where the first uplink signal group corresponds to the first downlink signal;

The processor is further configured to use a communication interface to send the first uplink signal.

In a possible design, the processor is further configured to use a communication interface to receive configuration parameters of N downlink signals, where the N downlink signals include the first downlink signal, where N is a positive integer. For the content of the configuration reference, refer to the corresponding description in the first aspect, which is not repeated here.

In a possible design, the processor is further configured to use a communication interface to receive configuration parameters of M uplink signal packets, the M uplink signal packets include the first uplink signal packet, and M is a positive integer. For the content of the configuration reference, refer to the corresponding description in the first aspect, which is not repeated here.

In a possible design, the processor is further configured to use a communication interface to receive first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and M uplink signal groups. The N downlink signals include the first downlink signal, and the M uplink signal groups include the first uplink signal group.

In a sixth aspect, an embodiment of the present application provides a device, which includes a processor, configured to implement the method described in the second aspect. The device may also include a memory for storing instructions and data. The memory is coupled or integrated with the processor, and when the processor executes the instructions stored in the memory, the method described in the second aspect can be implemented. The device may also include a communication interface, which is used for the device to communicate with other devices. Exemplarily, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface, and other devices may be Terminal Equipment. In a possible device, the device includes:

Memory, used to store program instructions;

A processor, configured to use the communication interface to send the first downlink signal;

The processor is further configured to receive a first uplink signal by using a communication interface, the first uplink signal is included in a first uplink signal group, and the first uplink signal group corresponds to the first downlink signal.

In a possible design, the specific content of the grouping of the first downlink signal and the first uplink signal may refer to the specific description of the grouping of the first downlink signal and the first uplink signal in the second aspect, which is not specifically limited here. .

In a possible design, the processor is further configured to use a communication interface to send configuration parameters of N downlink signals, where the N downlink signals include the first downlink signal, where N is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the second aspect, which will not be repeated here.

In a possible design, the processor is further configured to send configuration parameters of M uplink signal packets by using a communication interface, the M uplink signal packets include the first uplink signal packet, and M is a positive integer. For the content of the configuration parameter, refer to the corresponding description in the second aspect, which will not be repeated here.

In a possible design, the processor is further configured to use a communication interface to send first signaling, where the first signaling is used to indicate the correspondence between the N downlink signals and the M uplink signal groups. The N downlink signals include the first downlink signal, and the M uplink signal groups include the first uplink signal group.

In a seventh aspect, an embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described in the first aspect.

In an eighth aspect, an embodiment of the present application also provides a computer-readable storage medium, including instructions, which when run on a computer, cause the computer to execute the method described in the second aspect.

In a ninth aspect, embodiments of the present application provide a computer program product containing instructions, which when run on a computer, cause the computer to execute the method described in the first aspect.

In a tenth aspect, an embodiment of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the method described in the second aspect.

In an eleventh aspect, an embodiment of the present application provides a chip system. The chip system includes a processor and may also include a memory for implementing the functions of the network device in the above method. The chip system can be composed of chips, or can include chips and other discrete devices.

In a twelfth aspect, an embodiment of the present application provides a chip system. The chip system includes a processor and may also include a memory for realizing the functions of the terminal device in the foregoing method. The chip system can be composed of chips, or can include chips and other discrete devices.

In a thirteenth aspect, an embodiment of the present application provides a system that includes the device described in the third aspect or the fifth aspect and the device described in the fourth or sixth aspect.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the drawings used in the embodiments of the present application will be described below.

FIG. 1 is a schematic diagram of the architecture of a wireless communication system provided by an embodiment of the present application;

2 is a schematic flowchart of a signal transmission method provided by an embodiment of the present application;

3 to 13 are schematic diagrams of uplink signal grouping modes provided by embodiments of the present application;

14-15 are schematic diagrams of the correspondence between downlink signals and uplink signal groups provided by embodiments of the present application;

FIG. 16 is a schematic diagram of an application scenario provided by an embodiment of the present application;

FIG. 17 is a schematic diagram of correlation values between received signals and sent signals corresponding to different cyclic shift values provided by an embodiment of the present application;

18-19 are schematic diagrams of configuration parameters of downlink signals provided by embodiments of the present application;

20-21 are schematic diagrams of configuration parameters of uplink signal grouping provided by embodiments of the present application;

Figures 22-23 are schematic diagrams of configuration modes of the correspondence between downlink signals and uplink signal groups provided by embodiments of the present application;

Figures 24-27 are schematic diagrams of the logical structure of devices provided by embodiments of the present application;

FIG. 28 is a schematic structural diagram of a communication chip provided by an embodiment of the present application.

detailed description

The terms in the embodiments of the application are only used to explain the specific embodiments of the application, and are not intended to limit the application.

Referring to FIG. 1, FIG. 1 shows an example of a wireless communication system involved in an embodiment of the present application. The wireless communication system 100 includes communication devices, and the communication devices can use air interface resources for wireless communication. The communication device may include a network device 101 and a terminal device 102, and the network device 101 may also be referred to as a network side device. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources, and space resources.

The network device 101 may perform wireless communication with the terminal device 102 through one or more antennas. Each network device 101 can provide communication coverage for its corresponding coverage area 104. The coverage area 104 corresponding to the network device 101 may be divided into multiple cells or multiple sectors, where one cell or one sector corresponds to a part of the coverage area (not shown). The network device 101 can communicate with the terminal device 102 through the wireless air interface 105. The network device 101 and the network device 101 may also communicate with each other directly or indirectly through an interface 107 (such as an X2/Xn interface). The numbers of network devices 101 and terminal devices 102 in FIG. 1 are only for example, and they do not constitute a limitation on the application scope of the embodiments of the present application.

The terminal device 102 involved in the embodiments of the present application can also be called a terminal, and can be a device with wireless transceiver function. It can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; or on water ( Such as ships, etc.); can also be deployed in the air (such as aircraft, balloons and satellites, etc.). The terminal device may be a user equipment (UE), where the UE includes a handheld device with a wireless communication function, a vehicle-mounted device, a wearable device, or a computing device. Exemplarily, the UE may be a machine type communication (MTC) terminal, a mobile phone (mobile phone), a tablet computer, or a computer with a wireless transceiver function. Terminal equipment can also be virtual reality (VR) terminal equipment, augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in unmanned driving, wireless terminals in telemedicine, and smart Wireless terminals in power grids, wireless terminals in smart cities, wireless terminals in smart homes, and so on. In the embodiments of the present application, the device used to implement the function of the terminal may be a terminal; it may also be a device capable of supporting the terminal to implement the function, such as a chip system. The device may be installed in the terminal or used in conjunction with the terminal. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. In the technical solutions provided in the embodiments of the present application, the device for implementing the functions of the terminal is a terminal or UE as an example to describe the technical solutions provided in the embodiments of the present application.

The network equipment involved in the embodiments of the present application includes a base station (base station, BS), which may be a device that is deployed in a wireless access network and can communicate with a terminal wirelessly. Among them, the base station may have many forms, such as macro base stations, micro base stations, relay stations, and access points. Exemplarily, the base station involved in the embodiment of the present application may be a base station in a fifth generation (5G) mobile communication system or a base station in a long term evolution (LTE) system, where the base station in 5G It can also be called a transmission reception point (TRP) or next-generation Node B (gNB). In the embodiments of the present application, the device used to implement the function of the network device may be a network device; it may also be a device capable of supporting the network device to implement the function, such as a chip system, which may be installed in the network device or connected to the network device. Matching use. In the technical solutions provided by the embodiments of the present application, the device for implementing the functions of the network equipment is a network device or a base station as an example to describe the technical solutions provided by the embodiments of the present application.

In the embodiment of the present application, the wireless communication system 100 is not limited to an LTE system, and may also be a 5G system, a wireless fidelity (Wi-Fi) system, or a future evolution system. Among them, the 5G system can also be called a new radio (NR) system. The wireless communication system 100 may also be an Internet of Things (IoT) system, a machine type communication (MTC) system, a massive machine type communications (mMTC) system, and an enhanced machine type communication ( enhanced machine type communications, eMTC) system, etc.

The technical solutions provided in the embodiments of the present application can be applied to wireless communication between communication devices. The wireless communication between communication devices may include, but is not limited to: wireless communication between a network device and a terminal, wireless communication between a network device and a network device, and wireless communication between a terminal and a terminal. Among them, in the embodiments of the present application, the term "wireless communication" can also be referred to as "communication" for short, and the term "communication" can also be described as "data transmission", "information transmission" or "transmission". Exemplarily, the data transmission between the network device and the terminal includes: the network device sends a signal to the terminal; and/or, the terminal sends a signal to the network device. The technical solution provided by the embodiments of the application can be used for wireless communication between a scheduling entity and a subordinate entity, and those skilled in the art can use the technical solution for wireless communication between other scheduling entities and subordinate entities, such as macro base stations and micro base stations. Wireless communication between, for example, the wireless communication between the first terminal and the second terminal.

In the embodiment of the present application, the terminal device 102 may access the network device 101 or a system including the network device 101 through a random access process, and perform uplink data transmission and/or downlink data transmission with the network device 101. In the random access process, the terminal device 102 may send a random access preamble sequence (preamble) to the network device 101, and the network device 101 detects the preamble and performs corresponding feedback. In the process of the terminal device 102 sending data to the network device 101, the terminal device 102 may send a demodulation reference signal (DMRS) to the network device 101 for use in the physical uplink shared channel (PUSCH) and / Or related demodulation of physical uplink control channel (PUCCH). Among them, the DMRS of PUSCH and PUCCH may be the same or different, which is not limited in the embodiment of the present application. The uplink signal mentioned in the embodiment of this application includes but is not limited to a preamble or a reference signal, for example, it may also be a PUSCH or PUCCH. Reference signals include but are not limited to DMRS or sounding reference signals (SRS). The reference signal can also be called a pilot.

It should be noted that the terms "system" and "network" in the embodiments of this application can be selected interchangeably. Signals can also be described as sequences, data, etc. At least one can also be described as one or more, and multiple can be two, three, four or more, and the embodiments of the present application do not limit it. In view of this, in the embodiments of the present application, “a plurality of” may also be understood as “at least two”. "And/or" describes the association relationship of the associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. In addition, the character "/", unless otherwise specified, generally indicates that the associated objects before and after are in an "or" relationship.

In the embodiments of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C", and "D". The technical features in the "first", "second", "third", "A", "B", "C" and "D" describe the technical features in no order or size order.

In the random access procedure, in a cell, the UE randomly selects a preamble sequence to send in one or more optional preamble sequences. If two or more UEs simultaneously select non-orthogonal preamble sequences for transmission, it will cause interference to the receiving end. Especially when the channel characteristics of these UEs are relatively similar (for example, these UEs are very close), the interference will be more serious. At this time, the base station cannot correctly detect the preamble sent by each UE, and the access success rate of the UE will decrease. For the mMTC scenario, there may be many UEs performing uplink transmission at the same time in the cell, and the above situation may be more serious.

In a communication system, multiple UEs may also send data and reference signals (for example, demodulation reference signals (DMRS)) on the same or partially the same time-frequency resources. At this time, the reference signal used by the UE may not be scheduled by the base station, but selected by the UE through random or specific rules. If the reference signals selected by multiple UEs have high correlation and the channel characteristics of these UEs are relatively close, the interference of the reference signals between the UEs will be more serious.

Therefore, for a scenario where multiple UEs may simultaneously send uplink signals (for example, preamble or DMRS), how to reduce interference between uplink signals is a technical problem solved by the embodiments of the present application.

The embodiment of the present application provides a signal transmission method. Referring to Figure 2, the signal transmission method includes but is not limited to the following steps:

S201. The first communication device sends a first downlink signal, and the second communication device receives the first downlink signal.

S202. The second communication device determines a first uplink signal from the first uplink signal group, and the first uplink signal group corresponds to the first downlink signal.

S203. The second communication device sends the first uplink signal, and the first communication device receives the first uplink signal.

In the embodiments of the present application, the first communication device may be a network device, or a software module, hardware circuit, chip, chip system, or other device that can be installed in the network device or can be matched with the network device. The second communication device may be a terminal device, or a software module, hardware circuit, chip, chip system, or other device that can be installed in the terminal device or can be matched with the terminal device. For ease of description, the first communication device is a network device or a base station, and the second communication device is a terminal device or UE as an example for description below.

In the embodiment of the present application, multiple uplink signals may be grouped into M uplink signal groups, and each uplink signal group includes a positive integer number of uplink signals. The number of uplink signals included in different uplink signal groups may be the same or different, which is not limited in the embodiment of the present application. In the embodiment of the present application, the positive integer may be an integer of 1, 2, 3 or greater, and the embodiment of the present application does not limit it. Different signals in each uplink signal group are orthogonal or have low correlation, and the correlation of signals between different groups may not be limited. For example, the correlation of signals between different groups may be relatively higher. Any two groups may not include the same signal. Any two groups can also include some or all of the same signals. The same signals among the packets can be separated from each other by space. For example, the receiving end (such as a network device) can distinguish uplink signals by the direction of the receiving beam. For intra-group or inter-group, different signals can generate one or more of different sequence parameters, different cyclic shift (CS) values, different time-frequency resource positions, or different spreading codes Parameters to distinguish each other.

Exemplarily, when sending an uplink signal or a downlink signal, the sending end may obtain the signal to be sent through some or all of the following operations: sequence generation, spread spectrum, cyclic shift, precoding, resource mapping, and so on. After the signal to be sent is obtained, the signal to be sent can be sent to the receiving end. The execution order of the above various operations is not limited. Exemplarily, the signal to be sent can be obtained through the following operations in sequence:

Sequence generation, precoding, resource mapping; or

Sequence generation, resource mapping, precoding; or

Sequence generation, spread spectrum, precoding, resource mapping; or

Sequence generation, spread spectrum, resource mapping, precoding; or

Sequence generation, cyclic shift, precoding, resource mapping; or

Sequence generation, cyclic shift, resource mapping, precoding; or

Sequence generation, cyclic shift, spread spectrum, precoding, resource mapping; or

Sequence generation, cyclic shift, spread spectrum, resource mapping, precoding; or

Sequence generation, spread spectrum, cyclic shift, precoding, resource mapping.

Sequence generation, spread spectrum, cyclic shift, resource mapping, precoding.

Optionally, the signal may be expressed as a sequence, and the sequence may be a pseudo-noise (PN) sequence, a ZC (zadoff-chu) sequence or other kinds of sequences. For a sequence, different sequence generation parameters include: the sequence generation formula is different; or the sequence generation formula is the same, but one or more parameters of the formula are different.

For example, for the ZC sequence, the ZC sequence generated using different roots is the ZC sequence generated using different sequence generation parameters. For the ZC sequence generation method, the ZC sequence can be generated according to the formula x(n)=exp(-j*pi*u*n1*(n1+1)/Nzc), where n1=n mod Nzc(n=0,1, …, L-1, L is the sequence length), u is the root of the ZC sequence, Nzc is the largest prime number less than or equal to the sequence length L, exp represents the exponential operation, j represents the imaginary unit, the square of j is equal to -1, and pi represents the pi . For another example, for the PN sequence, the PN sequence generated using different initial values is the PN sequence generated using different sequence generation parameters. For the generation method of the Gold sequence in the PN sequence, it is possible to generate a c(n) sequence (n=0,1,...,L-1, L is the sequence length) whose elements in the sequence are 0 or 1, The formula for generating the c(n) sequence is: c(n)=(x1(n+1600)+x2(n+1600))mod 2. Among them, mod represents the remainder operation, x1 and x2 are generated by recursion, and the formula for generating x1 and x2 is: x1(n+31)=(x1(n+3)+x1(n))mod 2, x2(n +31)=(x2(n+3)+x2(n+2)+x2(n+1)+x2(n))mod 2, the initial value of x1 is a fixed value (for example, 0 or 1), x2 The initial value of can be different for each PN sequence to be generated. Different PN sequences can be generated by changing different x2 values. After generating the c(n) sequence, you can also convert c(n), and convert c(n) whose element value is 0 or 1 into a sequence whose value is -1 or +1. For example, you can convert The element with value 0 in c(n) is converted to -1, and the element with value 1 is converted to +1; or, the element with value 0 in c(n) is converted to +1, and the element with value 1 is converted Convert to -1. For the convenience of subsequent description, in the embodiments of the present application, the ZC sequence x(n) generated according to the ZC sequence generation formula, or the c(n) sequence generated according to the PN sequence generation formula (or the converted c(n) sequence ), or the sequence generated according to other sequence generation formulas is called the basic sequence or root sequence. The basic sequence is a sequence that has not undergone cyclic shift and spreading operations.

A sequence (for example, a base sequence or a sequence subjected to a spread spectrum operation) can be cyclically shifted. For example, for a ZC sequence, the cyclic shift in the frequency domain can be equivalent to the phase of each element in the sequence (for example, the phase of the element value -1 is π, and the phase of the element value +1 is 0). Linear rotation, that is, y(n)=x(n)*exp(j*2*pi*cyclic shift value/T*n), where the cyclic shift value represents the length of time the signal is cyclically shifted (in seconds) ), T represents the duration (in seconds) that does not include the cyclic prefix part in the symbols used to transmit the sequence, x(n) represents the sequence before cyclic shift, and y(n) represents the sequence after cyclic shift , Pi represents the circumference ratio, j represents the imaginary unit, n represents the sequence number of the elements in the sequence, n=0,1,...,L-1, L is the sequence length. Among them, L is a positive integer. Equivalently, the cyclic shift can also be expressed as y(n)=x(n)*exp(j*2*pi*alpha/L*n), where the value of alpha can be predefined by the system or passed by the network device Signaling instructions to the terminal.

The sequence (for example, the base sequence or the cyclically shifted sequence) can be spread spectrum operation. Multiply each element in the basic sequence with each element in the spreading code to get the spread sequence. Among them, the spreading code includes but is not limited to orthogonal cover code (OCC). For example, the ZC sequence x(n) generated by the ZC sequence generation method includes 10 elements {x(1), x(2), x(3), x(4), x(5), x(6), x(7), x(8), x(9), x(10)}, the spreading code includes 2 elements {w ₁ , w ₂ }, then each element in the basic sequence x(n) and Each element in the spreading code is multiplied in turn to get the sequence after spreading {x(1)*w ₁ , x(2)*w ₁ , x(3)*w ₁ , x(4)*w ₁ , x(5)*w ₁ , x(6)*w ₁ , x(7)*w ₁ , x(8)*w ₁ , x(9)*w ₁ , x(10)*w ₁ , x(1)*w ₂ , x(2)*w ₂ , x(3)*w ₂ , x(4)*w ₂ , x(5)*w ₂ , x(6)*w ₂ , x( 7)*w ₂ , x(8)*w ₂ , x(9)*w ₂ , x(10)*w ₂ }. Or, by multiplying each element in the basic sequence x(n) with each element in the spreading code, the sequence after spreading can be obtained as {x(1)*w ₁ , x(2)*w ₂ , X(3)*w ₁ , x(4)*w ₂ , x(5)*w ₁ , x(6)*w ₂ , x(7)*w ₁ , x(8)*w ₂ , x (9)*w ₁ , x(10)*w ₂ }. In this case, the spreading code can be an orthogonal superposition code, and the sequence length remains unchanged after spreading.

For the precoding operation, it can be understood that the same signal is multiplied by a corresponding coefficient for each of the multiple transmitting antennas (the antenna may be a virtual antenna port), and the same signal is transmitted on the corresponding antenna. The coefficients corresponding to the multiple antennas form a vector, which may be called a precoding vector. The signals sent by the multiple antennas are superimposed in the space to form a space beam. The directivity of the space beam is related to the value of the precoding vector, that is, the signal transmission direction in the space can be adjusted by adjusting the value of the precoding vector.

Optionally, in the embodiment of the present application, the grouping manner of the uplink signal may be predefined by the protocol, or may be configured by the network device to the terminal device through signaling. The purpose of uplink signal grouping is to ensure that the different signals in the group are orthogonal to each other or have low correlation. There are many ways of grouping. Exemplarily, the signals generated by the same basic sequence using different cyclic shift values can be divided into a group, and at least one of the following parameters of the signals in this group is different: time-frequency resource, spreading code, and cyclic shift Place value. Among them, the basic sequence may be a ZC sequence, or a PN sequence, or other types of sequences. For example, for DMRS, DMRS can be generated according to ZC sequence, sequence 1, sequence 2, and sequence 3 can be divided into a group, these 3 sequences are generated by the same ZC sequence through different cyclic shift values, and DMRS is grouped The purpose of the method is to try to ensure that the DMRS in the group are orthogonal to each other or have low correlation with each other. The signals mapped on the same time-frequency resource can also be divided into a group, and the signals in this group are different in at least one of the following parameters: sequence generation parameters, spreading codes, and cyclic shift values. It is also possible to divide the signals using the same spreading code into a group, and the signals in this group are different in at least one of the following parameters: time-frequency resources, sequence generation parameters, and cyclic shift values.

The following is an example of the grouping manner of M uplink signal groups. It should be noted that the ZC sequence in the following embodiments can also be replaced with other types of sequences, such as PN sequence, then the sequence generation parameters of the ZC sequence (such as the root of the ZC sequence) can be replaced with the sequence generation parameters of the PN sequence ( Such as the initial value of x2 of the PN sequence).

Exemplarily, uplink signal grouping may be performed according to sequence generation parameters. Grouping uplink signals according to sequence generation parameters can also be described as grouping uplink signals according to a basic sequence or a root sequence. Exemplarily, the uplink signals corresponding to the same basic sequence can be regarded as a group, the basic sequences corresponding to the uplink signals between the groups are different, and one or more of the following parameters of the uplink signals in the group are different: time-frequency resources, spread spectrum Code and cyclic shift value. This can ensure that the uplink signals in the group remain orthogonal (different time-frequency resources or different spreading codes) or approximately remain orthogonal (different cyclic shift values). If the sequence is a ZC sequence, it can be grouped according to the value of the root of the ZC sequence, that is, the uplink signals corresponding to the root of a ZC sequence are grouped. If the sequence is a PN sequence, it can be grouped according to the initial value of the PN sequence, and the uplink signals corresponding to the initial value x2 of a PN sequence are grouped into one group. For example, as shown in Figure 3, u1, u2, u3 in Figure 3 represent different root sequences, CS1 to CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different time-frequency resources for transmitting uplink signals. The 8 uplink signals generated by u1 are divided into group 1, the uplink signals generated by u2 are divided into group 2, and the uplink signals generated by u3 are divided into group 3.

Exemplarily, uplink signal grouping may be performed according to sequence generation parameters. For example, the uplink signals corresponding to one or more basic sequences are regarded as a group, the basic sequences corresponding to the uplink signals are different between the groups, and one or more of the following parameters of all or part of the uplink signals in the group are different: time-frequency resources, Spreading code and cyclic shift value. This can ensure that all or part of the uplink signals in the group remain orthogonal (different time-frequency resources or different spreading codes) or approximately remain orthogonal (different cyclic shift values). For example, as shown in Figure 4, u1, u2, and u3 in Figure 4 represent the values of different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different times for transmitting uplink signals. Frequency resources, the uplink signals generated by u1 and u2 are divided into group 1, and the uplink signals generated by u3 are divided into group 2. Optionally, the number of basic sequences corresponding to each group may be the same or different.

Exemplarily, uplink signal grouping may be performed according to sequence generation parameters. For example, if the uplink signals corresponding to one or more basic sequences are taken as a group, the corresponding uplink signal sequence sets between the groups are not completely the same, and the corresponding uplink signal sequence sets between the groups may partially overlap. For example, if the sequence is a ZC sequence, it can be grouped according to the value of the root of the ZC sequence, that is, the uplink signals corresponding to one or more ZC root sequences are grouped into one group, but the values of the ZC roots contained in different groups can be Partially overlapped. For example, as shown in Figure 5, u1, u2, and u3 in Figure 5 represent the values of different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different timings for transmitting uplink signals. Frequency resources, the uplink signals generated by u1 and u2 are divided into group 1, and the uplink signals generated by u2 and u3 are divided into group 2.

Exemplarily, the uplink signal can be grouped according to the cyclic shift value. For example, if the uplink signal corresponding to a cyclic shift value is regarded as a group, the cyclic shift value corresponding to the uplink signal between the groups is different, and one or more of the following parameters of the uplink signal in the group are different: time-frequency resource, sequence generation Parameters and spreading codes. For example, as shown in Figure 6, CS1 to CS4 in Figure 6 represent 4 different cyclic shift values, TF1 and TF2 represent different time-frequency resources used to transmit uplink signals, and the uplink signal with a cyclic shift value of CS1 is divided To group 1, divide the uplink signal with the cyclic shift value of CS2 into group 2, divide the uplink signal with the cyclic shift value of CS3 into group 3, and divide the uplink signal with the cyclic shift value of CS4 into group 4. Grouping uplink signals by cyclic shift values has another advantage. If the basic sequence generates multiple uplink signals through multiple different cyclic shifts, when the uplink access timing error varies widely, it may exceed the minimum The interval of the cyclic shift value will cause the access performance to decrease. Grouping by the cyclic shift value can ensure that the uplink signal in the group corresponds to only one or a small number of cyclic shift values, expand the interval between multiple cyclic shift values, and ensure the performance of access. Among them, the uplink access timing error has a large variation range. It can also be understood that the variation range of the uplink access timing error is greater than the interval of the cyclic shift value. The interval of the cyclic shift value can be understood as the difference of the cyclic shift value. .

Exemplarily, the uplink signal can be grouped according to the cyclic shift value. For example, the uplink signals corresponding to one or more cyclic shift values are regarded as a group. For example, suppose CSn is the nth (assuming that n starts counting from 1, and the value of n is a positive integer) cyclic shift value, which needs to be divided into M groups, then mod(n-1,M)+1 represents the corresponding group number (Assuming that the group number starts counting from 1). For example, if M=2, the odd numbers of CS are divided into one group (that is, CS1 and CS3 correspond to group 1), and those with even numbers are divided into one group (that is, CS2 and CS4 correspond to group 2), then The interval between the cyclic shift values corresponding to the uplink signals in the group is relatively large, and the uplink signals in the group are different in one or more of the following: cyclic shift values, time-frequency resources, and spreading codes. This can ensure that the uplink signals in the group remain orthogonal (different time-frequency resources or different spreading codes) or approximately remain orthogonal (the cyclic shift value interval is relatively large). For example, as shown in Figure 7, CS1～CS4 in Figure 7 represent 4 different cyclic shift values, TF1 and TF2 represent different time-frequency resources used to transmit uplink signals, and the cyclic shift values are the uplinks of CS1 and CS3. The signals are divided into group 1, and the uplink signals with cyclic shift values of CS2 and CS4 are divided into group 2. Optionally, the number of cyclic shift values corresponding to each group may be the same or different. The corresponding cyclic shift values between groups may partially overlap. For example, uplink signals with cyclic shift values CS1 and CS3 are divided into group 1, and uplink signals with cyclic shift values CS2 and CS3 are divided into group 2. One or more of the following parameters of all or part of the uplink signals in the group are different: time-frequency resources, sequence generation parameters, and spreading codes.

Exemplarily, the uplink signal can be grouped according to the sequence generation parameter and the cyclic shift value. For example, uplink signals are grouped according to different sequence generation parameters and grouped according to different cyclic shift values. The uplink signals corresponding to different sequence generation parameters are allocated to different groups, and the uplink signals corresponding to different cyclic shift values are allocated to Different groupings. This can ensure that the uplink signals in the group remain orthogonal (different time-frequency resources or different spreading codes). For example, as shown in Figure 8, u1 and u2 in Figure 8 represent the values of different root sequences. In the figure, CS1～CS2 represent two different cyclic shift values, and TF1 and TF2 represent different times for transmitting uplink signals. Frequency resources, the uplink signal generated by the root sequence u1 and the cyclic shift value CS1 corresponds to group 1, and the uplink signal generated by the root sequence u1 and the cyclic shift value CS2 corresponds to group 2, and the root sequence u2 and the cyclic shift value CS1 are used. The uplink signal corresponding to group 3, and the uplink signal generated using the root sequence u2 and the cyclic shift value CS2 corresponds to group 4.

Exemplarily, uplink signal grouping may be performed according to time-frequency resources. For example, if the uplink signal corresponding to a time-frequency resource is regarded as a group, the time-frequency resources corresponding to the uplink signal between the groups are different, and one or more of the following parameters of the uplink signal in the group are different: sequence generation parameters, spreading codes, and Rotation value. For example, as shown in Figure 9, u1 and u2 in Figure 9 represent different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different time-frequency resources used to transmit uplink signals. The uplink signals occupying the time-frequency resource TF1 are divided into group 1, and the uplink signals occupying the time-frequency resource TF2 are divided into group 2. Exemplarily, the uplink signals corresponding to one or more time-frequency resources may also be regarded as a group, and the time-frequency resources corresponding to the uplink signals are different between the groups. For example, the uplink signals occupying time-frequency resource 1 and time-frequency resource 2 are divided into group 1, and the uplink signals occupying time-frequency resource 3 and time-frequency resource 4 are divided into group 2. Optionally, the number of time-frequency resources corresponding to each group may be the same or different. The corresponding time-frequency resources between groups may partially overlap. For example, the uplink signals occupying time-

frequency resources

1 and 2 are divided into group 1, and the uplink signals occupying time-

frequency resources

2 and 3 are divided into group 2. . One or more of the following parameters of all or part of the uplink signals in the group are different: sequence generation parameters, spreading codes, and cyclic shift values.

Exemplarily, uplink signal grouping may also be performed according to sequence generation parameters and time-frequency resources. For example, the uplink signals are grouped according to sequence generation parameters, and grouped according to time-frequency resources. For example, as shown in Figure 10, u1 and u2 in Figure 10 represent the values of different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different time-frequency resources used to transmit uplink signals. , Divide the uplink signal with the root sequence u1 and the time-frequency resource as TF1 into group 1, divide the uplink signal with the root sequence u1 and the time-frequency resource as TF2 into group 2, and divide the root sequence as u2 and the time-frequency resource as TF1 The uplink signal of is divided into group 3, and the uplink signal whose root sequence is u2 and the time-frequency resource is TF2 is divided into group 4.

Exemplarily, uplink signal grouping may also be performed according to the cyclic shift value and time-frequency resources. For example, the uplink signals are grouped according to cyclic shift values and grouped according to time-frequency resources. For example, as shown in Figure 11, u1 and u2 in Figure 11 represent the values of different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different time-frequency resources used to transmit uplink signals. , Divide the uplink signal whose cyclic shift value is CS1 or CS3 and the time-frequency resource is TF1 into group 1, and divide the uplink signal whose cyclic shift value is CS1 or CS3 and the time-frequency resource is TF2 into group 2, and the cyclic shift The uplink signal whose bit value is CS2 or CS4 and the time-frequency resource is TF1 is divided into group 3, and the uplink signal whose cyclic shift value is CS2 or CS4 and the time-frequency resource is TF2 is divided into group 4.

Exemplarily, uplink signal grouping may also be performed according to sequence generation parameters, cyclic shift values, and time-frequency resources. For example, the uplink signals are grouped according to sequences, grouped according to cyclic shift values, and grouped according to time-frequency resources. For example, as shown in Figure 12, u1 and u2 in Figure 12 represent the values of different root sequences, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different time-frequency resources used to transmit uplink signals. , Divide the uplink signal with the root sequence u1, the cyclic shift value CS1 or CS3 and the time-frequency resource TF1 into group 1, and the root sequence u1, the cyclic shift value CS2 or CS4, and the time-frequency resource TF1 The uplink signal is divided into group 2, the root sequence is u1, the cyclic shift value is CS1 or CS3, and the time-frequency resource is TF2 uplink signal is divided into group 3, the root sequence is u1, the cyclic shift value is CS2 or CS4 and The uplink signal whose time-frequency resource is TF2 is divided into group 4, the root sequence is u2, the cyclic shift value is CS1 or CS3, and the uplink signal whose time-frequency resource is TF1 is divided into group 5, and the root sequence is u2, cyclic shift The uplink signals with the value of CS2 or CS4 and the time-frequency resource of TF1 are divided into group 6, and the uplink signals with the root sequence of u2, the cyclic shift value of CS1 or CS3 and the time-frequency resource of TF2 are divided into group 7, and the root sequence is The uplink signals with u2, the cyclic shift value of CS2 or CS4, and the time-frequency resource of TF2 are divided into group 8.

Exemplarily, the uplink signals can also be grouped according to spreading codes, and the uplink signals corresponding to one spreading code are regarded as a group. The spreading codes corresponding to the uplink signals between groups are different, and the uplink signals in the group correspond to at least one of the following The items are different: sequence generation parameters, cyclic shift values, and time-frequency resources. In the embodiments of the present application, at least one item may be one, two or more items, which is not limited in the embodiments of the present application. For example, as shown in Figure 13, u1 represents the root sequence, SC1～SC4 represent the values of different spreading codes, CS1～CS4 represent 4 different cyclic shift values, and TF1 and TF2 represent different times for transmitting uplink signals. Frequency resources, the uplink signal with the spreading code SC1 is divided into 1, the uplink signal with the spreading code SC2 is divided into group 2, the uplink signal with the spreading code SC3 is divided into group 3, and the spreading code is SC4 The uplink signal is divided into group 4. It is also possible to combine spreading codes with one or more of sequence generation parameters, cyclic shift values, or time-frequency resources to perform fine-grained uplink signal grouping. The grouping method can refer to the grouping method shown in Figure 3 to Figure 12 above. , I won’t repeat it here.

In the embodiment of the present application, the time-frequency resource of the uplink signal can also be described as the location of the time-frequency resource of the uplink signal.

The above only gives examples of several ways of grouping uplink signals. In actual applications, grouping is based on one or more of different sequence generation parameters, cyclic shift values, time-frequency resource positions, or spreading codes. There are other ways, all of which fall within the protection scope of the embodiments of the present application.

In the embodiment of the present application, one uplink signal group may correspond to one or more downlink signals, and one downlink signal may correspond to one or more uplink signal groups. When a downlink signal corresponds to multiple uplink signal packets, after receiving the downlink signal, the terminal can select an uplink signal packet from the multiple uplink signal packets, and send the selected uplink signal packet to the network device. Signal; or, after receiving the downlink signal, the terminal can select multiple uplink signal packets from the multiple uplink signal packets, and send the uplink signal in the selected uplink signal packet to the network device to increase the terminal device to send uplink signals Probability of success. The downlink signal and the uplink signal grouping may have multiple correspondences, which may be one-to-one correspondence, or one-to-many, or many-to-one, or any combination of the above correspondences. Taking DMRS grouping as an example, the correspondence between the downlink signal and the uplink DMRS group can be: the downlink signal D1 corresponds to the uplink DMRS group U1, or the downlink signal D1 corresponds to the uplink DMRS group U1 and the uplink DMRS group U2, or the downlink signal D1 and the downlink signal D2 Corresponding to the uplink DMRS group U1, see Figure 14. The correspondence between the downlink signal and the uplink signal grouping may be predefined by the protocol, or may be configured by the network device to the terminal device through signaling. Among them, "correspondence" can also be referred to as association, mapping, binding, matching, and so on. The downlink signal may be a downlink reference signal, and the downlink reference signal may be a reference signal newly defined in the protocol, and the purpose is to allow the terminal device to determine the corresponding uplink signal group.

In this embodiment of the application, the signaling sent by the network device to the terminal may be system messages, broadcast messages, radio resource control (RRC) signaling, media access control (MAC) control elements ( One or a combination of one or more of control element (CE) and downlink control information (DCI).

Optionally, in this embodiment of the present application, one uplink signal group may correspond to one or more downlink signal groups, and one downlink signal group may also correspond to one or more uplink signal groups. The downlink signal grouping and the uplink signal grouping may have multiple correspondences, which may be one-to-one correspondence, or one-to-many, or many-to-one, or any combination of the above correspondences. Taking DMRS grouping as an example, the corresponding relationship between the downlink signal group and the uplink DMRS group can be: downlink signal group D1 corresponds to uplink DMRS group U1, or downlink signal group D1 corresponds to uplink DMRS group U1 and uplink DMRS group U2, or downlink signal group D1 The uplink DMRS group U1 corresponds to the downlink signal group D2, as shown in FIG. 15. The correspondence between the downlink signal packet and the uplink signal packet may be predefined by the protocol, or may be configured by the network device to the terminal device through signaling.

In the embodiment of this application, the correspondence between an uplink signal group and a downlink signal can be understood as the uplink signal in the uplink signal group corresponding to the downlink signal; the correspondence between an uplink signal group and a downlink signal group can be understood as the The uplink signal packet corresponds to the downlink signal in the downlink signal packet, or the uplink signal in the uplink signal packet corresponds to the downlink signal packet, or the uplink signal in the uplink signal packet corresponds to the downlink signal in the downlink signal packet Corresponding.

In the embodiment of the present application, description is made by taking the correspondence between M uplink signal groups and N downlink signals as an example, and the method can also be extended to correspond to M uplink signal groups and N downlink signal groups. Among them, M and N are positive integers. The values of M and N may be the same or different, and the embodiments of the present application do not limit it. Similar to the foregoing grouping manner of upstream signal grouping, the downlink signal grouping can be distinguished by one or more parameters of sequence generation parameters, cyclic shift values, time-frequency resource positions, spreading codes, and precoding vectors. The grouping mode of the uplink signal grouping and the grouping mode of the downlink signal grouping may be the same or different, which is not limited in the embodiment of the present application.

Network equipment can periodically or irregularly send N downlink signals on time-frequency resources. These N downlink signals can be generated by one of sequence generation parameters, cyclic shift values, time-frequency resource positions, spreading codes, and precoding vectors. Or multiple parameters to distinguish. Wherein, N is a positive integer, such as an integer of 1, 2, 3 or greater, which is not limited in the embodiment of the present application. For example, the above N downlink signals are generated from the same basic sequence through different cyclic shift values. Or, the foregoing N downlink signals are transmitted using different time-frequency resources. Or, the spreading codes used by the above N downlink signals are different. The network device may precode the downlink signal before sending the downlink signal. The network device may use an independent precoding vector for each downlink signal, and the precoding vector used by the two downlink signals may be the same or different. Through precoding, the downlink signal can be sent to a certain direction in the form of a beam, for example, the area corresponding to the uplink signal group U1 in FIG. 16. For example, a network device may send downlink signals generated from the same basic sequence through different cyclic shift values on a certain time-frequency resource, and the precoding methods used by each downlink signal are different.

The terminal device detects N downlink signals sent by the network device on the time-frequency resource. The terminal device selects the corresponding uplink signal group according to the detection result. Exemplarily, the terminal device may select the uplink signal group corresponding to the downlink signal with the strongest signal strength, the highest signal-to-noise ratio, the signal strength not lower than the threshold value, or the signal-to-noise ratio not lower than the threshold value as the first uplink signal group. When the device needs to send an uplink signal, it selects the uplink signal for transmission in the first uplink signal packet. For example, a network device sends N downlink signals on a certain time-frequency resource. These N downlink signals are generated by the same basic sequence through different cyclic shift values, and the terminal device detects the signal strengths corresponding to these N downlink signals and selects The uplink signal group corresponding to the strongest downlink signal. The detection method of the terminal device may be, for example, assuming that the sequence after spreading the basic sequence is s(n), and the UE performs correlation operations on the received signal and s(n) to obtain the corresponding correlation function. The network device sends signals generated from the basic sequence through different cyclic shift values, and after the UE correlates the received signal with s(n), multiple correlation peaks can be obtained near multiple cyclic shift values. Assuming that different downlink signals use different precoding vectors (that is, different beam directions), the signal strength (such as power value) received by the UE is also different. The peak value of the correlation peak reflects the received strength of each signal and also reflects the precoding vector The degree of matching with the UE's downlink channel. As shown in Figure 17, among the three downlink signals received by the UE, the correlation value between the received signal corresponding to the cyclic shift CS1 value and the sequence s(n) is the largest. Then the DMRS group U1 corresponding to the CS1 signal can be used as the above The first uplink signal packet.

After the terminal device determines the first uplink signal group, when it needs to send the uplink signal, it can select from the selected first uplink signal group (for example, select randomly or according to specific rules, such as according to the UE identifier (ID) , And/or time-frequency resources used to send the uplink signal, etc. to select) the uplink signal, and send the selected uplink signal to the network device. For example, if the DMRS group U1 is the above-mentioned first uplink signal group, the UE randomly selects a DMRS in the DMRS group U1, and sends the selected DMRS to the network device.

The UE selects the uplink signal group corresponding to the downlink signal with the strongest signal strength, the highest signal-to-noise ratio, the signal strength not below the threshold, or the signal-to-noise ratio not below the threshold, which can make the channel characteristics (such as the angle-of-signal angle-of-arrival) arrival, AOA)) relatively close UEs select uplink signals from the same group for transmission, and multiple uplink signals in the same group are orthogonal or have relatively low correlation, which can reduce interference between uplink signals. This is because the strongest downlink signals measured by multiple UEs may all be the same, and the channel characteristics of these UEs are generally similar (for example, the distance is relatively close). To avoid interference between these UEs when sending uplink signals, these UEs can choose orthogonal Or low-correlation uplink signals are sent.

Optionally, the terminal device may use the detected uplink signal group corresponding to the first downlink signal whose signal strength is not lower than the threshold value as the first uplink signal group. Compared with the terminal device detecting all downlink signals sent by the network device After determining the downlink signal with the strongest signal strength, the terminal device can determine the first uplink signal group earlier, and select the uplink signal to send from the first uplink signal group earlier, which improves communication efficiency. .

Optionally, after receiving the uplink signals sent by multiple UEs, the network equipment can determine the uplink signal group selected by each UE, thereby obtaining the load of each uplink signal group (that is, the number of UEs that select each uplink signal group ). The network equipment can adjust the precoding vectors (also called precoding methods) of the above N downlink signals according to the load of each uplink signal group to achieve the purpose of load balancing of each uplink signal group, or adjust the above N downlink signals. One or more of the time-frequency resource position of the signal, sequence generation parameters, cyclic shift value, and spreading code can be used to modify or regroup the previous grouping result to achieve the load of each uplink signal grouping The purpose of balance.

For example, as shown in Figure 16, the network device sends three downlink signals, namely D1 (assuming its index is 01), D2 (assuming its index is 10) and D3 (assuming its index is 11). These three downlink signals use Different precoding methods (that is, different beam directions), these three downlink signals correspond to three DMRS groups U1 (assuming group U1 includes DMRS signals 1111, 1110, and 1101), DMRS group U2 (assuming group U2 includes DMRS signals) 1100, 1011, and 1010) and DMRS group U3 (assuming group U3 includes DMRS signals 1001, 0111, and 0110). Each UE detects the strengths of D1, D2, and D3, and selects the corresponding DMRS group. For example, when UE1 detects that D1 has the strongest signal strength, UE1 selects the DMRS in U1 corresponding to D1 for transmission. If the network equipment finds that the coverage area corresponding to U1 is heavily loaded (that is, the number of UEs that select U1 is larger), it can adjust the precoding method corresponding to the downlink signal D2 or the downlink signal D3 to the same If the downlink signal D1 is similar (or the same) precoding method, the part of the UE that was originally at the boundary of U1 and U2 will measure the signal with the strongest signal strength as D2, and then select the DMRS in the DRMS group U2 corresponding to D2 for transmission In this way, the number of UEs that select the DRMS group U1 is reduced, thereby reducing the load of U1. It can be seen that by adjusting the precoding methods of the three downlink signals, more uplink signal groups can be selected by UEs in the coverage area corresponding to U1, and the load of each uplink signal group will be more balanced. For another example, if the network equipment finds that the coverage area corresponding to U1 has a heavy load (that is, the number of UEs that select U1 is larger), it can adjust the previous grouping result or regroup the uplink signal, and set the time corresponding to U1. The number of one or more of the frequency resource location, sequence generation parameter, cyclic shift value, and spreading code is increased to increase the number of uplink signals in the uplink signal group U1, so that the heavily loaded U1 corresponds to the coverage area The internal UE can choose to use more uplink signals. For example, the cyclic shift value corresponding to U1 last time is a value of CS1, when the network device regroups, the number of cyclic shift values corresponding to U1 is increased to 2, for example, the cyclic shift value is CS1 and CS2 The uplink signal of is divided into U1 group. After the network device adjusts the previous grouping result or re-groups the uplink signal, it may also notify the UE through signaling. For example, the network device sends the configuration parameters of the regrouped uplink signal group to the UE through UE-specific RRC signaling or broadcast signaling. For the related content of the configuration parameters, please refer to the configuration parameters of the M uplink signal groups mentioned above. I won't repeat it here.

By implementing the method provided in the embodiments of this application, by binding the downlink signal and the uplink signal grouping, it can be ensured that UEs with similar channel characteristics use orthogonal or low-correlation uplink signals, which can reduce the interference of uplink signals and greatly improve the performance of network equipment. Uplink signal detection performance. In the existing method, all UEs in a cell select uplink signals from the same uplink signal set, so the interference between these uplink signals may be relatively high, especially when the channel characteristics of the UEs are relatively close. serious. In the embodiment of the present application, through the correspondence between downlink signals and uplink signal groups, the uplink signals selected by UEs with similar channel characteristics are as orthogonal as possible, thereby reducing uplink signal interference and improving the overall performance of the system.

Optionally, the network device may configure the parameters corresponding to the aforementioned N downlink signals to the terminal device through signaling. Among them, any two different parameters can be configured through the same signaling or through different signaling, which is not limited in the embodiment of the present application. The N downlink signals include the first downlink signal, and N is a positive integer, such as an integer of 1, 2, 3, 4, or a larger integer, which is not limited in the embodiment of the present application. Among them, the parameters of the downlink signal may also be referred to as the configuration parameters of the downlink signal.

The parameters of each of the N downlink signals may include one or more of the following: time domain resource parameters, frequency domain resource parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters.

The time domain resource parameter is used to indicate the time domain resource location occupied by the downlink signal. Among them, the time domain resource parameter may also be referred to as the time domain parameter for short. Exemplarily, the time domain resource parameter is used to indicate one or more of the radio frame number, subframe number, slot number, and OFDM symbol where the downlink signal is located.

The frequency domain resource parameter is used to indicate the frequency domain resource position occupied by the downlink signal. Among them, the frequency domain resource parameters may also be referred to as frequency domain parameters for short. Exemplarily, the frequency domain parameter is used to indicate the index set of the resource block (resource block, RB) to which the downlink signal is mapped, or the frequency domain start RB index and the number of RBs to which the downlink signal is mapped. The frequency domain resource parameter may also be used to indicate the resource position in the RB to which the downlink signal is mapped, for example, the resource element (RE) position used by the downlink signal in the RB. The network device can indicate to the terminal the time domain orthogonal frequency division multiplexing (OFDM) symbol and frequency domain subcarrier corresponding to the RE; or the protocol predefines the candidate of the RE used to transmit the downlink signal in the RB Pattern. Wherein, the candidate patterns include one or more candidate patterns, and each pattern is used to indicate a combination of REs used to transmit the downlink signal in the RB. For a downlink signal, when there are multiple candidate patterns, the network device can indicate the pattern used by the downlink signal from the candidate pattern.

The sequence generation reference includes one or more of the following: the type of sequence generation method, and the generation parameters. For example, the types of sequence generation methods include ZC sequence generation methods (the sequence may be referred to as ZC sequences) or PN sequence generation methods (the sequence may be referred to as PN sequences). If it is a ZC sequence generation method, the generation parameter includes the root of the ZC sequence; if it is a PN sequence generation method, the generation parameter includes the initial value of the PN sequence.

The parameter of the spreading code includes the value of the spreading code or the index of the spreading code. For example, the spreading code is (+1, -1), and its index can be 0.

The parameter of the cyclic shift includes the cyclic shift value or the index of the cyclic shift value. For example, the cyclic shift value is 5.56us, and its index can be 1.

Optionally, all or part of the above parameters can also be combined. Different combinations correspond to different index numbers. These index numbers may also be referred to as identifiers. For example, the identifier may be a port number. For a downlink signal, the network device may send an index number to the terminal to indicate the foregoing combination configured for the downlink signal. For example, the time-frequency resource 1, the root u1 of the ZC sequence and the cyclic shift value CS1 can be combined, and the corresponding index value is 01; the time-frequency resource 2, the root u2 of the ZC sequence and the cyclic shift value CS1 can be combined to correspond to The index value is 02; the time-frequency resource 3, the root u3 of the ZC sequence, and the cyclic shift value CS2 are combined, and the corresponding index value is 03. For a downlink signal D1, the network device sends an index value of 01 to the terminal, for example, indicating that the parameters of the downlink signal D1 are: the resource location to which the downlink signal D1 is mapped is the time-frequency resource 1, and the root of the ZC sequence adopted by the downlink signal D1 is u1 And the cyclic shift value adopted by the downlink signal D1 is CS1.

The identifiers (identifiers, IDs) of the N downlink signals may be indicated implicitly through the time sequence of transmission, or the ID of each downlink signal may be carried in the parameters of each downlink signal and indicated explicitly. For example, referring to FIG. 18, the network device sends the parameters of three downlink signals, and the transmission timing of the parameters of the three downlink signals can implicitly indicate the indexes of the three downlink signals. For example, the terminal device may determine that the index of the downlink signal D1 is 0, the index of the downlink signal D2 is 1, and the index of the downlink signal D3 is 2 according to the receiving order. It should be noted that Fig. 18 is an example for explaining that the parameters of each downlink signal are used to indicate time domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters. In other optional implementation manners, the parameters of each downlink signal can also indicate any one of the five parameters: time domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters. Multiple. For another example, referring to FIG. 19, the network device sends three downlink signal parameters, and the parameters of each downlink signal are also used to indicate the identifier or index of the downlink signal. For example, the index of the downlink signal D1 is 0, The index of the signal D2 is 1, and the index of the downlink signal D3 is 2, and the terminal device can identify the index of each downlink signal according to the parameters of each downlink signal. It should be noted that Fig. 19 is the index of each downlink signal used to indicate the index of the downlink signal, time domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters. As an example, in other optional implementations, the parameters of each downlink signal can also indicate the index, time domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters. Any one or more of the items. In the embodiment of the present application, the identifier of the downlink signal may also be referred to as the index of the downlink signal.

Optionally, there are many configuration methods for network equipment to configure downlink signal parameters: for example, the network equipment can configure the parameters of the downlink signal through UE-specific RRC signaling. The RRC signaling is configured through the physical downlink shared channel. , PDSCH) bearer, the cyclic redundancy check (CRC) of the physical downlink control channel (PDCCH) corresponding to the PDSCH is scrambled by the UE-specific identifier, so the RRC will only be UE receives. The network equipment can also be configured through the dedicated RRC signaling for the UE group where the UE is located. The RRC signaling is carried by the PDSCH. The CRC of the PDCCH corresponding to the PDSCH is scrambled by the identifier dedicated to the UE group. Therefore, the RRC will only be The UEs in the UE group receive. The network equipment can also be configured through broadcast signaling or system messages, for example, in the form of master information block (master information block, MIB) or other broadcast signaling. For example, in addition to MIB, broadcast signaling is carried by PDSCH in the form of RRC signaling. The CRC of the PDCCH corresponding to the PDSCH is scrambled by the identity shared by the UEs in the cell, so the RRC signaling can be received by all UEs in the cell. .

Optionally, the parameters of the aforementioned downlink signal can be predefined through a protocol. Or, some of the parameters of the downlink signal are predefined by the protocol, and some are configured by the network device. For example, the time domain parameters and frequency domain parameters corresponding to the above N downlink signals can be predefined by the protocol, and the sequence generation parameters, spreading code parameters, and cyclic shift parameters corresponding to the downlink signals are configured by the network device to the terminal device. In this case, the parameter of a downlink signal sent by the network device is used to indicate the sequence generation parameter, the spreading code parameter, and the cyclic shift parameter corresponding to the downlink signal.

Optionally, the network device may also configure the parameters corresponding to the foregoing M uplink signal groups to the terminal device through signaling. Among them, the parameters of the uplink signal may also be referred to as the configuration parameters of the uplink signal.

Among them, the parameters of each uplink signal group may include one or more of the following: the time domain resource parameter of each uplink signal in the uplink signal group, the frequency domain resource parameter of each uplink signal, and each uplink signal The sequence generation parameters of each uplink signal, the parameters of the spreading code of each uplink signal, and the parameters of the cyclic shift of each uplink signal.

The time domain resource parameter is used to indicate the time domain resource location occupied by each uplink signal in the uplink signal group. Among them, the time domain resource parameter may be referred to as the time domain parameter for short. Exemplarily, the time domain resource parameter includes one or more of a radio frame number, a subframe number, a slot number, and an OFDM symbol where the uplink signal is located. The time domain resource parameters of different uplink signals in an uplink signal group can be indicated separately or a shared parameter.

The frequency domain resource parameter is used to indicate the frequency domain resource position occupied by each uplink signal in the uplink signal group. Among them, the frequency domain resource parameters may be referred to as frequency domain parameters for short. Exemplarily, the frequency domain resource parameter includes the sequence number set of the resource block where the uplink signal is located, or the start RB sequence number and the number of RBs in the frequency domain where the uplink signal is located. The frequency domain parameters may also include resource location parameters in the RB where the uplink signal is located, that is, the RE location used by the uplink signal in the RB. The network device may indicate the position of the RE through the symbol and the frequency domain subcarrier index, or the protocol may predefine the candidate pattern of the RE used to transmit the uplink signal in the RB. Wherein, the candidate patterns include one or more candidate patterns, and each pattern is used to indicate a combination of REs used to transmit the uplink signal in the RB. For an uplink signal, when there are multiple candidate patterns, the network device indicates the pattern used by the uplink signal from the candidate pattern. The frequency domain resource parameters of different uplink signals in an uplink signal group may be indicated separately, or a shared parameter may be indicated.

Optionally, all or part of the above parameters can also be combined, and different combinations correspond to different index numbers. These index numbers may also be referred to as identifiers, and the identifiers may be port numbers, for example. For an uplink signal or an uplink signal group, the network device may send an index number to the terminal to indicate the foregoing combination configured for the uplink signal or the uplink signal group. For example, the time-frequency resource 1, the root u1 of the ZC sequence and the spreading code SC1 can be combined, and the corresponding index value is 01; the time-frequency resource 2, the ZC sequence u2 and the spreading code SC2 can be combined, and the corresponding index value is 02; Combine the time-frequency resource 3, u3 of the ZC sequence and the spreading code SC3, and the corresponding index value is 03. The network device sends an index value of 01 to the terminal, indicating that the parameters of the uplink signal group U1 are: the resource location to which each uplink signal in the uplink signal group U1 is mapped is the time-frequency resource 1, and each uplink signal in the uplink signal group U1 is used The root of the ZC sequence is u1 and the spreading code used by each uplink signal in the uplink signal group U1 is SC1. The cyclic shift value used by each uplink signal in the uplink signal group U1 can be indicated separately. For example, when the uplink signal group U1 includes Q uplink signals, the network device may also indicate Q cyclic shift parameters for the Q uplink signals, and each cyclic shift parameter is used to indicate the cyclic shift value of an uplink signal . Among them, Q is a positive integer.

Optionally, if other parameters except for the cyclic shift value are the same for different uplink signals in an uplink signal group, the parameters of the uplink signal group may indicate: the time domain resource parameters of the uplink signal group, the The frequency domain resource parameter of the uplink signal packet, the sequence generation parameter of the uplink signal packet, the parameter of the spreading code of the uplink signal packet, and the parameter of the cyclic shift of each uplink signal in the uplink signal packet. If for different uplink signals in an uplink signal group, other parameters except the time domain resource parameters are the same, the parameters of the uplink signal group can indicate: the time domain resource parameters of each uplink signal in the uplink signal group , The frequency domain resource parameter of the uplink signal packet, the sequence generation parameter of the uplink signal packet, the parameter of the spreading code of the uplink signal packet, and the parameter of the cyclic shift of the uplink signal packet. If for different uplink signals in an uplink signal group, other parameters except the frequency domain resource parameters are the same, the parameters of the uplink signal group can indicate: the time domain resource parameters of the uplink signal group and the parameters in the uplink signal group The frequency domain resource parameter of each uplink signal, the sequence generation parameter of the uplink signal group, the parameter of the spreading code of the uplink signal group, and the parameter of the cyclic shift of the uplink signal group. If for different uplink signals in an uplink signal group, other parameters except the spreading code are the same, then the parameters of the uplink signal group can indicate: the time domain resource parameter of the uplink signal group, the frequency of the uplink signal group Domain resource parameters, sequence generation parameters of the uplink signal packet, parameters of the spreading code of each uplink signal in the uplink signal packet, and parameters of the cyclic shift of the uplink signal packet. That is to say, if a certain parameter of all the uplink signals in a certain uplink signal group is the same, the network device can only configure a set of the same parameter for the uplink signal group, without having to deal with each uplink signal. Configure a set of the same parameters separately, saving configuration overhead.

Optionally, the identification ID (or index) of the foregoing M uplink signal groups may be implicitly indicated by the time sequence of transmission, or the ID of each uplink signal group may be carried in the parameters of each uplink signal group for explicit indication . For example, referring to FIG. 20, the network device sends the parameters of three uplink signal groups, and the transmission timing of the parameters of the three uplink signal groups may implicitly indicate the indexes of the three uplink signal groups. For example, the terminal device may determine that the index of the uplink signal group U1 is 0, the index of the uplink signal group U2 is 1, and the index of the uplink signal group U3 is 2 according to the receiving order. It should be noted that, in FIG. 20, the parameters of each uplink signal group indicate the time domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shifts of each uplink signal in the uplink signal group. The five parameters are explained as examples. In other optional implementations, the parameters of each uplink signal group can also indicate the time domain parameters, frequency domain parameters, sequence generation parameters, and spreading code parameters of each uplink signal. Any one or more of the 5 parameters, cyclic shift parameters. For another example, referring to FIG. 21, the network device sends the parameters of three uplink signal groups, where the parameters of each uplink signal group are also used to indicate the index or identifier of the uplink signal group, for example, the index of the uplink signal group U1 If it is 0, the index of the uplink signal group U2 is 1, and the index of the uplink signal group U3 is 2, the terminal device can identify the index of each uplink signal group according to the parameters of each uplink signal group. It should be noted that, in Figure 21, the parameters of each uplink signal group indicate the index of the uplink signal group, the time domain parameters, frequency domain parameters, sequence generation parameters, and spreading codes of each uplink signal in the uplink signal group. The 6 items of parameters and cyclic shift parameters are taken as examples. In other optional implementations, the parameters of each uplink signal group can also indicate the index of the uplink signal group and the time in the uplink signal group. Any one or more of the six items: domain parameters, frequency domain parameters, sequence generation parameters, spreading code parameters, and cyclic shift parameters.

Optionally, there are many ways for the network equipment to configure the uplink signal grouping parameters: for example, the network equipment can configure the uplink signal grouping parameters through UE-specific RRC signaling. The RRC signaling is carried by the PDSCH, and the PDCCH corresponding to the PDSCH The CRC is scrambled by the UE-specific identity, so the RRC can only be received by the UE. The network equipment can also be configured through the dedicated RRC signaling for the UE group where the UE is located. The RRC signaling is carried by the PDSCH. The CRC of the PDCCH corresponding to the PDSCH is scrambled by the identifier dedicated to the UE group. Therefore, the RRC will only be The UEs in the UE group receive. Network devices can also be configured through broadcast signaling or system messages, for example, in the form of MIB or other broadcast signaling.

Optionally, the parameters of the uplink signal grouping can be predefined through the protocol. Or, some of the parameters of the uplink signal grouping are predefined by the protocol, and some are configured by the network device. For example, the time domain parameters and frequency domain parameters corresponding to each uplink signal in the above M uplink signal packets can be predefined by the protocol, and the sequence generation parameters, spreading codes, and cyclic shifts corresponding to each uplink signal in the uplink signal packets The value is configured by the network device to the terminal device. In this case, the parameters of each uplink signal packet sent by the network device indicate the sequence generation parameters, spreading code parameters, and cyclic shift corresponding to each uplink signal in the uplink signal packet. Bit parameters.

Optionally, the network device may also configure the corresponding relationship between the N downlink signals and the M uplink signal groups to the terminal device, for example, it may be configured to the terminal device through signaling.

There are three ways to configure the corresponding relationship:

Manner 1: The parameter of the downlink signal configured by the network device is also used to indicate the identifier or index of the corresponding uplink signal group. For example, in the downlink signal parameter configuration shown in FIG. 18, in addition to the parameters shown in FIG. 18, the parameters of the downlink signal may also indicate the index of the uplink signal group corresponding to the downlink signal. For example, the parameters of the downlink signal D1 are also used to indicate the index 0 of the corresponding uplink signal group U1, the parameters of the downlink signal D2 are also used to indicate the index 1 of the corresponding uplink signal group U2, and the parameters of the downlink signal D3 are also used It indicates the index 2 of the corresponding uplink signal group U3. For details, refer to FIG. 22. Similarly, for the downlink signal parameter configuration shown in FIG. 19, the parameters of the downlink signal may indicate the index of the uplink signal group corresponding to the downlink signal in addition to the parameters shown in FIG. 19. For example, the parameters of the downlink signal D1 are also used to indicate the index 0 of the corresponding uplink signal group U1, the parameters of the downlink signal D2 are also used to indicate the index 1 of the corresponding uplink signal group U2, and the parameters of the downlink signal D3 are also used It indicates the index 2 of the corresponding uplink signal group U3.

Manner 2: The parameter of the uplink signal group configured by the network device is also used to indicate the identifier or index of the corresponding downlink signal. For example, for the uplink signal grouping parameter configuration shown in FIG. 20, the uplink signal grouping parameter may indicate the index of the downlink signal corresponding to the uplink signal group in addition to the parameter shown in FIG. 20. For example, the parameters of the uplink signal group U1 are also used to indicate the index 0 of the corresponding downlink signal D1, the parameters of the uplink signal group U2 are also used to indicate the index 1 of the corresponding downlink signal D2, and the parameters of the uplink signal group U3. It is also used to indicate the index 2 of the corresponding downlink signal D3, as shown in FIG. 23 for details. Similarly, for the uplink signal grouping parameter configuration shown in FIG. 21, the uplink signal grouping parameter may indicate the index of the downlink signal corresponding to the uplink signal grouping in addition to the parameters shown in FIG. 21. For example, the parameters of the uplink signal group U1 are also used to indicate the index 0 of the corresponding downlink signal D1, the parameters of the uplink signal group U2 are also used to indicate the index 1 of the corresponding downlink signal D2, and the parameters of the uplink signal group U3. It is also used to indicate the index 2 of the corresponding downlink signal D3.

Manner 3: The network device configures the correspondence between the identifiers or indexes of the N downlink signals and the identifiers or indexes of the M uplink signal groups through signaling. For example, the network device configures the index of the uplink signal group U1 corresponding to the downlink signal D1 to be 0 through signaling, the index of the uplink signal group U2 corresponding to the downlink signal D2 to 1, and the index of the uplink signal group U3 corresponding to the downlink signal D3 to 2. For details, see Table 1 below.

Table 1

下行信号的索引Downlink signal index	对应的上行信号分组的索引Index of the corresponding uplink signal group
00	00
11	11
22	22

It should be noted that Table 1 is an example in which downlink signals with the same index value correspond to uplink signal groups. In practical applications, the indexes of the corresponding downlink signal and uplink signal groups may be different, for example, index The index of the uplink signal group corresponding to the downlink signal of 0 may be 1 or 2.

The above three corresponding relationship configuration modes are all explicit configuration, and the configuration of the corresponding relationship may also be implicit. For example, the protocol predefines the transmission timing to implicitly indicate the uplink signal group corresponding to the downlink signal. As shown in FIG. 18, the network device sends three downlink signal parameters on time-frequency resource 1, time-frequency resource 2 and time-frequency resource 3, respectively. The transmission timing of the parameters of these three downlink signals can implicitly indicate these 3 parameters. For example, the terminal device may determine that the index of the downlink signal D1 is 0, the index of the downlink signal D2 is 1, and the index of the downlink signal D2 is 1, according to the receiving order (for example, the order of the time domain and/or the frequency order of the frequency domain). The index of D3 is 2. As shown in FIG. 20, the network device sends the parameters of three uplink signal packets on time-frequency resource 4, time-frequency resource 5, and time-frequency resource 6, respectively, and the transmission timing of the parameters of these three uplink signal packets can be implicitly indicated The indexes of these three uplink signal groups. For example, the terminal device can determine according to the receiving order that the index of the uplink signal group U1 is 0, the index of the uplink signal group U2 is 1, and the index of the uplink signal group U3 is 2. The sequence determines that the uplink signal group corresponding to the downlink signal D1 is U1 (or the downlink signal with index 0 corresponds to the uplink signal group with index 0), and the uplink signal group corresponding to the downlink signal D2 is U2 (or the downlink signal with index 1 corresponds to the index The uplink signal group is 1), and the uplink signal group corresponding to the downlink signal D3 is U3 (or the downlink signal with index 2 corresponds to the uplink signal group with index 2).

The configuration of the correspondence relationship can be pre-defined in the protocol in addition to being configured by the network device. For example, the protocol predefines the mapping table of the index of the downlink signal and the index of the uplink signal group as shown in Table 1 above. The protocol can also predefine the parameters of each downlink signal and the parameters of each uplink signal in the corresponding uplink signal group.

It should be noted that Figures 18 to 23 are all described in terms of the correspondence relationship between the downlink signal and the uplink signal group. The correspondence relationship can also be the correspondence between the downlink signal group and the uplink signal group, the corresponding parameter configuration mode and the corresponding relationship configuration For the manner, reference may be made to the foregoing description of the correspondence between the downlink signal and the uplink signal grouping, which will not be repeated here.

The above embodiments are all described by taking the uplink signal as a DMRS as an example. Correspondingly, the uplink signal can also be a preamble, and the uplink signal packet can also be a preamble packet. The implementation method when the uplink signal is a preamble can refer to when the uplink signal is DMRS. The realization method of this time will not be repeated here. In addition to DMRS, the uplink signal may also be other reference signals, and may also be PUSCH or PUCCH, and other reference signals may include SRS, for example. The downlink signal may be a downlink reference signal, and the downlink reference signal includes but is not limited to a reference signal newly defined in the protocol, and the purpose is to allow the terminal device to determine the corresponding uplink signal group.

In the above-mentioned embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of network equipment, terminal, and interaction between the network equipment and the terminal. It can be understood that, in order to realize the foregoing functions, each network element, such as a terminal device, a network device, etc., includes a hardware structure and/or software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the network elements and algorithm steps of the examples described in the embodiments disclosed in this document, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

It is understandable that among the above methods, the method implemented by the terminal device can also be implemented by a component (such as a chip, chip system, or circuit) that can be configured on the terminal device, and the method implemented by a network device can also be implemented by The components (such as chips, chip systems, or circuits) of network devices are implemented.

The embodiments of the present application can divide the terminal equipment, network equipment, etc. into functional modules according to the above method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. . The above-mentioned integrated modules can be implemented in the form of hardware or software functional modules. It should be noted that the division of modules in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

In the case of dividing each functional module corresponding to each function, FIG. 24 shows a schematic diagram of a possible logical structure of the device involved in the foregoing embodiment. The device 1300 includes a processing unit 1301 and a communication unit 1302. The apparatus 1300 may be a terminal device or a component configurable in the terminal device. Exemplarily, the communication unit 1302 is configured to support the apparatus 1300 to perform the steps of receiving or sending information by the corresponding terminal device in the foregoing method embodiment. The processing unit 1301 is configured to support the apparatus 1300 to execute the processing steps related to the corresponding terminal device in the foregoing method embodiment, for example, to implement other functions except the function of the transceiver unit. Optionally, the device 1300 may further include a storage unit for storing codes (programs or instructions) or data. Exemplarily, the communication unit 1302 is configured to receive the first downlink signal; the processing unit 1301 is configured to determine the first uplink signal from the first uplink signal group, where the first uplink signal group and the first downlink signal are Correspondingly; the communication unit 1302 is also used to send the first uplink signal.

In terms of hardware implementation, the aforementioned processing unit 1301 may be a processor or a processing circuit. The communication unit 1302 may be a transceiver or a transceiving circuit or an interface circuit or the like. The storage unit may be a memory. The aforementioned processing unit, communication unit, and storage unit may be integrated or separated.

FIG. 25 shows a schematic diagram of a possible logical structure of the apparatus involved in the foregoing embodiment. The apparatus 1400 includes a processing unit 1401 and a communication unit 1402. The apparatus 1400 may be a network device or a component configurable in the network device. Exemplarily, the communication unit 1402 is configured to support the apparatus 1400 to perform the steps of receiving or sending information by the corresponding network device in the foregoing method embodiment. The processing unit 1401 is configured to support the network device to execute the processing steps related to the network device in the foregoing method embodiment, for example, to implement other functions except the function of the transceiver unit. Optionally, the device 1400 may further include a storage unit for storing codes (programs or instructions) or data. In one possible manner, the communication unit 1402 is configured to send a first downlink signal; the communication unit 1402 is also configured to receive a first uplink signal, the first uplink signal is included in the first uplink signal packet, and the first uplink signal The grouping corresponds to the first downlink signal.

In terms of hardware implementation, the aforementioned processing unit 1401 may be a processor or a processing circuit. The communication unit 1402 may be a transceiver or a transceiving circuit or an interface circuit or the like. The storage unit may be a memory. The aforementioned processing unit, communication unit, and storage unit may be integrated or separated.

FIG. 26 shows a schematic diagram of a possible hardware structure of the device provided by the embodiment of this application. The apparatus 1500 is used to implement the functions of the terminal device in the foregoing method. The device may be a terminal device, a device in a terminal device, or a device that can be matched and used with the terminal device. For example, the device may be a chip system. In the embodiments of the present application, the chip system may be composed of chips, or may include chips and other discrete devices. The apparatus 1500 includes at least one processor 1520, configured to implement the function of the terminal device in the method provided in the embodiment of the present application. Exemplarily, the processor 1520 may generate and send the first uplink signal and other information. For details, refer to the detailed description in the method example, which is not repeated here.

The device 1500 may further include at least one memory 1530 for storing program instructions and/or data. The memory 1530 and the processor 1520 are coupled. The coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units, or modules, and may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1520 may operate in cooperation with the memory 1530. The processor 1520 may execute program instructions stored in the memory 1530. At least one of the at least one memory may be included in the processor.

The apparatus 1500 may further include a communication interface 1510 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 1500 can communicate with other devices. Illustratively, the other device may be a network device. The processor 1520 uses the communication interface 1510 to send and receive data, and is used to implement the method executed by the terminal device in the foregoing embodiment. In the embodiments of the present application, the communication interface may be a transceiver, interface, bus, circuit, or a device or module capable of implementing the transceiver function.

The embodiment of the present application does not limit the specific connection medium between the communication interface 1510, the processor 1520, and the memory 1530. In the embodiment of the present application in FIG. 26, the memory 1530, the processor 1520, and the communication interface 1510 are connected by a bus 1540. The bus is represented by a thick line in FIG. 26. The connection mode between other components is only for schematic illustration. , Is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, only one thick line is used to represent in FIG. 26, but it does not mean that there is only one bus or one type of bus.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, and may implement or Perform the methods, steps, and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware processor, or executed and completed by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk drive (HDD) or a solid-state drive (SSD), etc., or a volatile memory (volatile memory), for example Random-access memory (random-access memory, RAM). The memory is any other medium that can be used to carry or store desired program codes in the form of instructions or data structures and that can be accessed by a computer, but is not limited thereto. The memory in the embodiments of the present application may also be a circuit or any other device capable of realizing a storage function, for storing program instructions and/or data.

It is understandable that the apparatus 1500 may be the terminal device 102 in the wireless communication system 100 shown in FIG. 1, and may be implemented as a UE, an eMTC device, a mobile device, a mobile station, a mobile unit, and a wireless unit. , Remote units, user agents, mobile clients, etc.

It should be noted that the device 1500 shown in FIG. 26 is only an implementation manner of the embodiment of the present application. In actual applications, the device 1500 may also include more or fewer components, which is not limited here. For the specific implementation of the apparatus 1500, reference may be made to the relevant description in the foregoing method embodiment, which is not repeated here.

FIG. 27 shows a schematic diagram of a possible hardware structure of the device provided by an embodiment of this application. The apparatus 1600 is used to implement the function of the network device in the above method. The device can be a network device, a device in a network device, or a device that can be matched and used with a network device. Exemplarily, the device may be a chip system. The apparatus 1600 includes at least one processor 1620, configured to implement the function of the network device in the method provided in the embodiment of the present application. Exemplarily, the processor 1620 may generate and send the first downlink signal and other information. For details, refer to the detailed description in the method example, which is not repeated here.

The device 1600 may further include at least one memory 1630 for storing program instructions and/or data. The memory 1630 and the processor 1620 are coupled. The processor 1620 may cooperate with the memory 1630 to operate. The processor 1620 may execute program instructions stored in the memory 1630. At least one of the at least one memory may be included in the processor.

The apparatus 1600 may further include a communication interface 1610 for communicating with other devices through a transmission medium, so that the apparatus used in the apparatus 1600 can communicate with other devices. Exemplarily, the other device may be a terminal device. The processor 1620 uses the communication interface 1610 to send and receive data, and is used to implement the method executed by the network device in the foregoing embodiment.

The embodiment of the present application does not limit the specific connection medium between the communication interface 1610, the processor 1620, and the memory 1630. In the embodiment of the present application in FIG. 27, the memory 1630, the processor 1620, and the communication interface 1610 are connected by a bus 1640. The bus is represented by a thick line in FIG. 27. The connection mode between other components is only for schematic illustration. , Is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used to represent in FIG. 27, but it does not mean that there is only one bus or one type of bus.

It is understandable that the apparatus 1600 may be the network device 101 in the wireless communication system 100 shown in FIG. 1, and may be implemented as a base station, a base transceiver station, a wireless transceiver, a basic service set (BSS), and an extension. Service set (extended service set, ESS), NodeB, eNodeB, gNB, etc.

It should be noted that the device 1600 shown in FIG. 27 is only an implementation manner of the embodiment of the present application. In actual applications, the device 1600 may further include more or fewer components, which is not limited here. For the specific implementation of the apparatus 1600, reference may be made to the relevant descriptions in the foregoing method embodiments, which will not be repeated here.

Referring to FIG. 28, FIG. 28 shows a schematic structural diagram of a communication chip provided by an embodiment of the present application. As shown in FIG. 28, the communication chip 1700 may include a processor 1701, and one or more interfaces 1702 coupled to the processor 1701. Exemplary:

The processor 1701 may be used to read and execute computer-readable instructions. In specific implementation, the processor 1701 may mainly include a controller, an arithmetic unit, and a register. Exemplarily, the controller is mainly responsible for instruction decoding, and sends control signals for operations corresponding to the instructions. The arithmetic unit is mainly responsible for performing fixed-point or floating-point arithmetic operations, shift operations and logical operations, etc., and can also perform address operations and conversions. The register is mainly responsible for storing the register operands and intermediate operation results temporarily stored during the execution of the instruction. In specific implementation, the hardware architecture of the processor 1701 can be an application specific integrated circuit (ASIC) architecture, a microprocessor without interlocked pipeline stage architecture (microprocessor without interlocked stages architecture, MIPS) architecture, and advanced streamlining. Instruction set machine (advanced RISC machines, ARM) architecture or NP architecture, etc. The processor 1701 may be single-core or multi-core.

Exemplarily, the interface 1702 can be used to input data to be processed to the processor 1701, and can output the processing result of the processor 1701 to the outside. In specific implementation, the interface 1702 can be a general purpose input output (GPIO) interface, which can communicate with multiple peripheral devices (such as liquid crystal display (LCD), camera (camara), radio frequency, RF ) Module, etc.) connection. The interface 1702 is connected to the processor 1701 through the bus 1703.

In a possible implementation manner, the processor 1701 may be configured to call and execute instructions from the memory to implement the method provided in one or more embodiments of the present application. The memory may be integrated with the processor 1701, or may be coupled to the communication chip 1700 through the interface 1702, that is, the memory may be a part of the communication chip 1700 or may be independent of the communication chip 1700. The interface 1702 may be used to output the execution result of the processor 1701.

It should be noted that the respective functions of the processor 1701 and the interface 1702 can be implemented through hardware design, through software design, or through a combination of software and hardware, which is not limited here.

The methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website, computer, server, or data center. Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid-state drive (SSD)). ))Wait.

In the embodiments of the present application, provided that there is no logical contradiction, the embodiments can be mutually cited. For example, methods and/or terms between method embodiments can be mutually cited, such as functions and/or functions between device embodiments. Or terms may refer to each other, for example, functions and/or terms between the device embodiment and the method embodiment may refer to each other.

Obviously, those skilled in the art can make various changes and modifications to the application without departing from the scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Claims

A signal transmission method, characterized in that it comprises:

Receiving the first downlink signal;

The first uplink signal is determined from the first uplink signal group, and the first uplink signal group corresponds to the first downlink signal, wherein the first uplink signal group is included in M uplink signal groups The M uplink signal groups are grouped according to one or more of the following parameters of the uplink signal: sequence generation parameters, cyclic shift values, spreading codes, and time-frequency resource positions, and M is a positive integer;

Sending the first uplink signal.
The method of claim 1, wherein the method further comprises:

Receiving configuration parameters of N downlink signals, where the N downlink signals include the first downlink signal, where N is a positive integer;

For one downlink signal among the N downlink signals, the configuration parameter of the one downlink signal is used to indicate at least one of the following: the identifier of the one downlink signal, the time domain resource parameter of the one downlink signal, the A frequency domain resource parameter of a downlink signal, a sequence generation parameter of the one downlink signal, a parameter of a spreading code of the one downlink signal, and a parameter of a cyclic shift of the one downlink signal.
The method according to claim 1 or 2, wherein the method further comprises:

Receiving configuration parameters of the M uplink signal packets;

For one uplink signal group in the M uplink signal groups, the configuration parameter of the one uplink signal group is used to indicate at least one of the following: the identifier of the one uplink signal group, each uplink signal group in the one uplink signal group The time domain resource parameter of the signal, the frequency domain resource parameter of each uplink signal in the one uplink signal group, the sequence generation parameter of each uplink signal in the one uplink signal group, the spread of each uplink signal in the one uplink signal group The parameter of the frequency code and the parameter of the cyclic shift of each uplink signal in the one uplink signal group.
The method according to claim 2 or 3, wherein the configuration parameter of the one downlink signal is further used to indicate the uplink signal group corresponding to the one downlink signal.
The method according to claim 3, wherein the configuration parameter of the one uplink signal group is further used to indicate the downlink signal corresponding to the one uplink signal group.
The method according to any one of claims 1-5, wherein the method further comprises:

Receive first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and the M uplink signal groups, and the N downlink signals include the first downlink signal.
The method according to any one of claims 1-6, wherein the first uplink signal comprises a random access preamble sequence or a demodulation reference signal DMRS.
A signal transmission method, characterized in that it comprises:

Sending the first downlink signal;

A first uplink signal is received, the first uplink signal is included in a first uplink signal packet, the first uplink signal packet corresponds to the first downlink signal, and the first uplink signal packet Included in M uplink signal packets, the M uplink signal packets are grouped according to one or more of the following parameters of the uplink signal: sequence generation parameters, cyclic shift values, spreading codes, and time-frequency Resource location, M is a positive integer.
The method according to claim 8, wherein the method further comprises:

Sending configuration parameters of N downlink signals, where the N downlink signals include the first downlink signal, where N is a positive integer;

For one downlink signal among the N downlink signals, the configuration parameter of the one downlink signal is used to indicate at least one of the following: the identifier of the one downlink signal, the time domain resource parameter of the one downlink signal, the A frequency domain resource parameter of a downlink signal, a sequence generation parameter of the one downlink signal, a parameter of a spreading code of the one downlink signal, and a parameter of a cyclic shift of the one downlink signal.
The method according to claim 8 or 9, wherein the method further comprises:

Sending the configuration parameters of the M uplink signal packets;

For one uplink signal group in the M uplink signal groups, the configuration parameter of the one uplink signal group is used to indicate at least one of the following: the identifier of the one uplink signal group, each uplink signal group in the one uplink signal group The time domain resource parameter of the signal, the frequency domain resource parameter of each uplink signal in the one uplink signal group, the sequence generation parameter of each uplink signal in the one uplink signal group, the spread of each uplink signal in the one uplink signal group The parameter of the frequency code and the parameter of the cyclic shift of each uplink signal in the one uplink signal group.
The method according to claim 9 or 10, wherein the configuration parameter of the one downlink signal is further used to indicate the uplink signal group corresponding to the one downlink signal.
The method according to claim 10, wherein the configuration parameter of the one uplink signal group is further used to indicate the downlink signal corresponding to the one uplink signal group.
The method according to any one of claims 8-12, wherein the method further comprises:

Sending first signaling, where the first signaling is used to indicate the correspondence between N downlink signals and the M uplink signal groups, and the N downlink signals include the first downlink signal.
The method according to any one of claims 8-13, wherein the first uplink signal comprises a random access preamble sequence or a demodulation reference signal DMRS.
A communication device, characterized by being used to implement the method of any one of claims 1 to 7.
A communication device, characterized by comprising a processor and a memory, the memory and the processor are coupled, and the processor is configured to implement the method according to any one of claims 1 to 7.
A communication device characterized by being used to implement the method according to any one of claims 8 to 14.
A communication device, characterized by comprising a processor and a memory, the memory is coupled to the processor, and the processor is configured to implement the method according to any one of claims 8 to 14.
A communication system comprising the communication device according to claim 15 or 16, and the communication device according to claim 17 or 18.
A computer-readable storage medium, characterized by comprising instructions, which when run on a computer, causes the computer to execute the method according to any one of claims 1 to 14.