WO2014186960A1

WO2014186960A1 - Radio transmission method, network device, and user equipment

Info

Publication number: WO2014186960A1
Application number: PCT/CN2013/076106
Authority: WO
Inventors: 周明宇; 万蕾; 温容慧
Original assignee: 华为技术有限公司
Priority date: 2013-05-22
Filing date: 2013-05-22
Publication date: 2014-11-27
Also published as: CN104584665A; CN104584665B

Abstract

Embodiments of the present invention provide a radio transmission method, a network device, and a user equipment, which relate to the field of wireless communications. The method comprises: a first network device sending a downlink signal in a first time-frequency resource, the first time-frequency resource being a time-frequency resource in which the first UE sends an uplink signal, a frequency corresponding to a subcarrier comprised in the first time-frequency resource bearing the downlink signal being the same as a frequency corresponding to a subcarrier comprised in the first time-frequency resource bearing the uplink signal. In the present invention, an uplink signal and a downlink signal are transmitted by using a same time-frequency resource, and the transmission efficiency is improved by reusing a radio resource; in the present invention, to solve the problem of interference between the uplink signal and the downlink signal in the mode, subcarriers of the uplink signal and the downlink signal are corresponding to a same frequency, so that there is no inter-carrier interference between the uplink signal and the downlink signal, making it possible that the uplink signal and the downlink signal are transmitted by using a same frequency, thereby achieving the objective of improving the transmission efficiency while the interference is avoided.

Description

Wireless transmission method, network device and user equipment

The present invention relates to the field of wireless communications, and in particular, to a method, a network device, and a user equipment for wireless transmission. Background technique

With the continuous development of wireless communication technologies, more and more user equipments and network equipments transmit data wirelessly. In the data transmission process, the uplink transmission and the downlink transmission are generally designed separately, so as to ensure that the uplink transmission and the downlink transmission respectively meet the technical requirements. For example, in the Long Term Evolution (LTE) system, the uplink transmission adopts single carrier frequency division. Single-carrier Frequency-Division Multiple Access (SC-FDMA) mode, and Orthogonal Frequency Division Multiple Access (OFDMA) is adopted for downlink transmission.

At present, since the available resources of the wireless communication system can also meet the communication requirements of the user, the uplink and downlink resources are independent of each other and are not shared, so that interference between the uplink and downlink signals can be avoided.

However, with the increasing demand for communication and the increasing shortage of wireless spectrum resources, future wireless communication systems need to further improve the transmission efficiency of the system. At the same time, with the increasingly dense network sites, the interference problem of network signals is becoming more and more serious. Summary of the invention

In order to improve the transmission efficiency of the wireless communication system and to remove the signal interference, the embodiment of the present invention provides a method, a network device, and a user equipment for wireless transmission. The technical solution is as follows:

In a first aspect, a method for wireless transmission is provided, the method comprising:

The first network device sends a downlink signal in the first time-frequency resource, where the first time-frequency resource is the first The time-frequency resource in which the UE sends the uplink signal, the sub-carrier included in the first time-frequency resource carrying the downlink signal and the sub-carrier included in the first time-frequency resource carrying the uplink signal correspond to the same frequency;

At least one of the downlink signal and the uplink signal includes a useful signal, and a resource unit corresponding to the reference signal included in any one of the uplink signal and the downlink signal and a resource corresponding to the useful signal in another signal The units do not overlap, wherein the time-frequency resource includes multiple resource units, and each resource unit corresponds to one symbol of the time domain and one sub-carrier of the frequency domain.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the first network device sends the downlink signal in the first time-frequency resource, the method further includes:

The first network device sends subcarrier mapping mode indication information, where the subcarrier mapping mode indication information is used to indicate a subcarrier mapping manner used when the first UE sends or receives a signal.

With reference to any one of the foregoing implementation manners of the first aspect, in the second possible implementation manner of the first aspect, the downlink signal and the uplink signal both include a useful signal, and any one of the uplink signal and the downlink signal A resource unit corresponding to a reference signal included in one signal does not overlap with a resource unit corresponding to a useful signal in another signal.

With the foregoing implementation of the first aspect, in a third possible implementation manner of the first aspect, the downlink signal includes a downlink reference signal, the uplink signal includes an uplink reference signal, and the uplink reference signal and the downlink The reference signals respectively use different orthogonal resources on the first time-frequency resource. With reference to any implementation manner of the foregoing aspect, in a fourth possible implementation manner of the foregoing aspect, the uplink reference signal and the downlink reference signal are respectively used by using different orthogonal resources on the first time-frequency resource. : the uplink reference signal and the downlink reference signal respectively use orthogonal resources of different frequencies in the first time-frequency resource; and/or,

The uplink reference signal and the downlink reference signal respectively use orthogonal resources of different time in the first time-frequency resource; and/or,

The uplink reference signal and the downlink reference signal respectively use different ones in the first time-frequency resource Orthogonal resources of orthogonal codes.

With reference to any one of the foregoing implementation manners of the first aspect, in a fifth possible implementation manner of the first aspect, the downlink reference signal is sent in the first resource unit that is included in the first time-frequency resource, where the first The resource unit is different from the second resource unit, where the second resource unit is a resource unit that is used by the first UE to send an uplink reference signal, and is included in the first time-frequency resource.

In conjunction with the fifth possible implementation of the first aspect, in a sixth possible implementation manner of the first aspect, the first network device does not send a signal on the second resource unit.

With reference to any one of the implementation manners of the foregoing aspect, in a seventh possible implementation manner of the first aspect, the first network device sends the zero power resource unit information to the first UE, so that the first UE No signal is transmitted on the resource unit indicated by the zero power resource unit information.

With reference to any one of the foregoing implementation manners of the first aspect, in the eighth possible implementation manner of the first aspect, the first network device sends the zero power resource unit information to the second UE, so that the second UE is in the The resource unit indicated by the zero power resource unit information does not receive a signal.

With reference to any of the foregoing implementation manners of the first aspect, in the ninth possible implementation manner of the first aspect, the zero power resource unit information includes: a reference signal transmission period and a time offset information.

With reference to any implementation manner of the foregoing aspect, in a tenth possible implementation manner of the foregoing aspect, the uplink signal includes an uplink reference signal for detection, and the downlink signal includes a downlink demodulation reference signal and is The signal, or the downlink signal includes a downlink reference signal for sounding, and the uplink signal includes an uplink demodulation reference signal and a useful signal.

With reference to any one of the foregoing implementation manners of the first aspect, in the first possible implementation manner of the first aspect, before the sending, by the first network device, the downlink signal in the first time-frequency resource, the method includes:

The first network device receives the first scheduling signaling, where the first scheduling signaling is used to instruct the first network device to send a signal on the first time-frequency resource.

In conjunction with any of the foregoing implementation manners of the first aspect, in a twelfth possible implementation manner of the first aspect, the signaling that is sent and received by the first network device and the first UE is UE-specific signaling.

In conjunction with any of the above implementations of the first aspect, the thirteenth possible implementation of the first aspect In the formula, the first network device receives the type indication information sent by any UE, and learns, according to the type indication information, whether the any UE can send a signal in the first time-frequency resource.

With reference to the thirteenth possible implementation manner of the first aspect, in the fourteenth possible implementation manner of the foregoing aspect, the type indication information includes the interference deletion capability identifier information of the any UE or the The system version information supported by the UE, the interference deletion capability identifier information is used to indicate whether any of the UEs has interference cancellation capability.

With the foregoing implementation of the first aspect, in a fifteenth possible implementation manner of the first aspect, the method further includes: the first network device sends a cell broadcast message, where the cell broadcast message is used Notifying the other network device or the UE in the cell where the first network device is located to send an uplink signal in the first time-frequency resource.

In a second aspect, a method for wireless transmission is provided, the method comprising:

The second network device receives the downlink signal sent by the first network device in the first time-frequency resource; the second network device receives the uplink signal sent by the first UE in the first time-frequency resource; The device acquires the useful signal sent by the first UE or sent by the first network device according to the downlink signal and the uplink signal.

With the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the second network device acquires the first UE according to the downlink signal and the uplink signal Useful signals sent, including:

Receiving, by the second network device, the downlink signal sent by the first network device in the first time-frequency resource and the uplink signal of the first UE, where the first network device is in the first time-frequency Interference cancellation is performed on the downlink signal sent in the resource and the interference signal in the uplink signal of the first UE, and the useful signal sent by the first UE or the first network device is sent.

With the foregoing implementation of the second aspect, in a third possible implementation manner of the second aspect, the second network device, according to the downlink signal and the uplink signal, acquire, sent by the first UE Before the signal is useful, the method further includes:

Receiving processing information for the interference signal. With the foregoing implementation of the second aspect, in a fourth possible implementation manner of the second aspect, the second network device, before receiving the uplink signal sent by the first UE in the first time-frequency resource, include:

The second network device receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the second network device receives the signal in the first time-frequency resource.

With reference to any implementation of the foregoing aspect, in a fifth possible implementation manner of the second aspect, the second network device receives a cell broadcast message, where the cell broadcast message is used to notify the second network device Transmitting a downlink signal and/or receiving an uplink signal in the first time-frequency resource.

With reference to any of the foregoing implementation manners of the second aspect, in a sixth possible implementation manner of the second aspect, the signaling that is sent and received by the second network device is UE-specific signaling.

A third aspect provides a method for wireless transmission, where the method includes:

The first user equipment UE sends an uplink signal in the first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first network device sends a downlink signal, and the first time-frequency resource that carries the downlink signal The included subcarriers and the subcarriers carrying the uplink signals correspond to the same frequency;

At least one of the downlink signal and the uplink signal includes a useful signal, and a resource unit corresponding to any one of the uplink signal and the downlink signal and a resource unit corresponding to the useful signal in another signal do not overlap.

In conjunction with the third aspect, in a first possible implementation of the third aspect,

Before the first UE sends the downlink signal in the first time-frequency resource, the method further includes: the first UE receiving the sub-carrier mapping mode indication information, where the sub-carrier mapping mode indication information is used to indicate the first UE The subcarrier mapping method used when transmitting or receiving signals.

With reference to any one of the foregoing implementation manners of the third aspect, in the second possible implementation manner of the third aspect, the downlink signal and the uplink signal both include a useful signal, and any one of the uplink signal and the downlink signal A resource unit corresponding to one reference signal and a resource unit corresponding to a useful signal in another signal do not overlap.

In conjunction with any of the above implementations of the third aspect, a third possible implementation of the third aspect The downlink signal includes a downlink reference signal, and the uplink signal includes an uplink reference signal; and the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource. With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource , including:

The uplink reference signal and the downlink reference signal respectively use orthogonal resources of different frequencies in the first time-frequency resource; and/or,

The uplink reference signal and the downlink reference signal respectively use orthogonal resources of different orthogonal codes in the first time-frequency resource.

With the foregoing implementation of the third aspect, in a fifth possible implementation manner of the third aspect, the first UE sends a downlink reference signal in a first resource unit of the first time-frequency resource, where The first resource unit is different from the second resource unit, and the second resource unit is the first resource unit

The resource unit used by the UE to transmit the uplink reference signal.

With reference to any of the foregoing implementation manners of the third aspect, in a sixth possible implementation manner of the third aspect, the first UE does not send a signal on the first resource unit.

With reference to any implementation manner of the foregoing aspect, in a seventh possible implementation manner of the third aspect, the first UE receives zero power resource unit information, and the first UE is in the zero power resource unit information. No signal is sent on the indicated resource unit.

With reference to any one of the foregoing implementation manners of the third aspect, in an eighth possible implementation manner of the third aspect, the first UE receives zero power resource unit information, and the first UE is in the zero power resource unit information No signal is received on the indicated resource unit.

With reference to any of the foregoing implementation manners of the third aspect, in the ninth possible implementation manner of the third aspect, the zero power resource unit information includes: a reference signal transmission period and a time offset information. With the foregoing implementation of the third aspect, in a tenth possible implementation manner of the foregoing aspect, before the sending, by the first UE, the uplink signal in the first time-frequency resource, the method includes:

The first UE receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE sends a signal on the first time-frequency resource.

With the foregoing implementation of the third aspect, in the eleventh possible implementation manner of the third aspect, the first UE sends the type indication information to the first network device, and learns according to the type indication information. Whether the first UE sends a signal in the first time-frequency resource.

With reference to any one of the foregoing implementation manners of the third aspect, in the twelfth possible implementation manner of the third aspect, the type indication information includes interference deletion capability identification information of the first UE or the first UE Supporting system version information, the interference deletion capability identifier information is used to indicate whether the first UE has an interference deletion capability.

With the foregoing implementation of the third aspect, in a thirteenth possible implementation manner of the third aspect, the first UE receives a cell broadcast message of a cell where the first UE is located, and the cell broadcast message carries The receiving or transmitting mode supported by the cell where the first UE is located, according to the cell broadcast message, whether the cell where the first UE is located supports the sending mode of the first UE itself.

With reference to any of the foregoing implementation manners of the third aspect, in the fourteenth possible implementation manner of the third aspect, the signaling that is sent and received by the first network device and the first UE is UE-specific signaling.

With the foregoing implementation of the third aspect, in a fifteenth possible implementation manner of the third aspect, the first UE receives the first scheduling signaling and only uses the scheduling uplink or the same in the same transmission time interval The second scheduling signaling of the downlink transmission ignores the first scheduling signaling.

In a fourth aspect, a method for wireless transmission is provided, where the method includes:

The second UE receives the downlink signal sent by the second network device in the first time-frequency resource; the second UE receives the uplink signal sent by the first UE in the first time-frequency resource; Obtaining a useful signal sent by the first UE or the second network device according to the downlink signal and the uplink signal.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the second UE root Obtaining the useful signal sent by the first UE or the second network device according to the downlink signal and the uplink signal, including:

Receiving, by the second UE, the downlink signal sent by the second network device in the first time-frequency resource and the uplink signal of the first UE, and sending, by the second network device, the first time-frequency resource And performing interference cancellation on the downlink signal and the interference signal in the uplink signal of the first UE, and acquiring a useful signal sent by the first UE or the second network device.

With the foregoing implementation of the fourth aspect, in a second possible implementation manner of the fourth aspect, the second UE acquires the first UE or the second according to the downlink signal and the uplink signal Before the useful signal sent by the network device, the method further includes:

Receiving processing information for the interference signal.

In conjunction with any of the foregoing implementation manners of the fourth aspect, in a third possible implementation manner of the fourth aspect, before the second UE receives the downlink signal sent by the second network device in the first time-frequency resource, the method includes:

The second UE receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE receives a signal in the first time-frequency resource.

With reference to any one of the foregoing implementation manners of the fourth aspect, in a fourth possible implementation manner of the fourth aspect, the second UE sends the type indication information to the first network device, and obtains the information according to the type indication information. Whether the second UE sends a signal in the first time-frequency resource.

With reference to any one of the foregoing implementation manners of the fourth aspect, in the fifth possible implementation manner of the fourth aspect, the type indication information includes interference deletion capability identification information of the second UE or supported by the second UE The system version information, the interference deletion capability identifier information is used to indicate whether the second UE has an interference deletion capability.

With reference to any implementation manner of the foregoing aspect, in a sixth possible implementation manner of the fourth aspect, the second UE receives a cell broadcast message of a cell where the second UE is located, where the cell broadcast message carries The receiving or transmitting mode supported by the cell where the second UE is located, according to the cell broadcast message, whether the cell where the second UE is located supports the sending mode of the second UE itself. With the foregoing implementation of the fourth aspect, in a seventh possible implementation manner of the fourth aspect, the second UE receives the first scheduling signaling in the same transmission time interval or is only used to schedule uplink or downlink. The second scheduling signaling of the transmission, ignoring the first scheduling signaling.

A fifth aspect provides a method for wireless transmission, where the method includes:

The third network device sends a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the information included in the first scheduling signaling, where the first scheduling signal is sent The command is further used to instruct the second UE or the second network device to receive the signal according to the information included in the first scheduling signaling.

With reference to the fifth aspect, in a first possible implementation manner of the fifth aspect, the first scheduling signaling includes time-frequency resource information, where the first scheduling signaling is used to indicate the first UE or the first network device The first scheduling signaling is further used to indicate that the second UE or the second network device receives the signal according to the time-frequency resource information, according to the time-frequency resource information sending signal.

With reference to any one of the foregoing implementation manners of the fifth aspect, in a second possible implementation manner of the fifth aspect, the first scheduling signaling further includes: modulation coding scheme information, transmission layer number information, and reference signal orthogonal resources. Any of the information.

With reference to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, configured by using different UEs or different network devices or different types of devices The signaling fields included in a scheduling signaling are parsed differently.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, configured by using different UEs or different network devices or different types of devices for parsing the transport layer The number information or the reference signal orthogonal resource information is parsed differently.

With reference to the fourth possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, configured by using different UEs or different network devices or different types of devices to parse the modulation coding The solution is parsed differently.

With the foregoing implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, before the third network device sends the first scheduling signaling, the method further includes: The third network device sends the MCS offset value information, so that the UE or the network device that receives the offset value information sends or receives a signal according to the offset value information and the first scheduling signaling.

With reference to any one of the foregoing implementation manners of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the first scheduling signaling includes a second information, where the first scheduling signaling is further used to indicate the first The UE or the first network device reads the second information, where the first scheduling signaling is further used to indicate that the second UE or the second network device ignores the second information.

With reference to the seventh possible implementation of the fifth aspect, in an eighth possible implementation manner of the fifth aspect, the second information includes at least one of power control information, precoding vector, or matrix information.

With reference to any one of the foregoing implementation manners of the fifth aspect, in a ninth possible implementation manner of the fifth aspect, the first scheduling signaling further includes a third information, where the third information is used to indicate different UEs or Network devices use different values to send or receive signals.

With reference to any of the foregoing implementation manners of the fifth aspect, in a tenth possible implementation manner of the fifth aspect, before the third network device sends the first scheduling signaling, the method further includes:

Transmitting, by the third network device, specific scrambling code information;

And scrambling the first scheduling signaling according to the specific scrambling code information, so that the first UE and the second UE that receive the specific scrambling code information receive the first scheduling signal by using the specific scrambling code information make.

With reference to any one of the foregoing implementation manners of the fifth aspect, in the eleventh possible implementation manner of the fifth aspect, the first scheduling signaling is used to indicate that the first that is sent at the first transmission time interval is received The UE or the network device that schedules the signaling sends or receives a signal according to the first scheduling signaling, and the duration between the second transmission time interval and the first transmission time interval is an integer multiple. Transmission time interval.

With reference to the eleventh possible implementation manner of the fifth aspect, in a twelfth possible implementation manner of the fifth aspect, the duration between the second transmission time interval and the first transmission time interval is taken The value is the same as the value of the transmission time interval for transmitting the scheduling signaling for scheduling the uplink transmission and the transmission time interval for the uplink transmission. In a sixth aspect, a first network device is provided, where the first network device includes: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The transmitter is configured to send a downlink signal in a first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first UE sends an uplink signal, and the first time-frequency resource that carries the downlink signal The included subcarriers and the subcarriers included in the first time-frequency resource carrying the uplink signal correspond to the same frequency;

With reference to the sixth aspect, in a first possible implementation manner of the sixth aspect, the transmitter is configured to send subcarrier mapping mode indication information, where the subcarrier mapping mode indication information is used to indicate that the first UE sends Or the subcarrier mapping method used when receiving signals.

In combination with the foregoing implementation manner, in the second possible implementation manner of the sixth aspect, the downlink signal and the uplink signal both include a useful signal, and any one of the uplink signal and the downlink signal is included The resource unit corresponding to the reference signal and the resource unit corresponding to the useful signal in the other signal do not overlap.

In combination with the foregoing implementation manner, in the third possible implementation manner of the foregoing aspect, the downlink signal includes a downlink reference signal, the uplink signal includes an uplink reference signal, and the uplink reference signal and the downlink reference signal are respectively used by Different orthogonal resources on the first time-frequency resource are described.

In conjunction with the foregoing third possible implementation manner, in the fourth possible implementation manner of the sixth aspect, the using the different orthogonal resources on the first time-frequency resource by using the uplink reference signal and the downlink reference signal respectively include:

The uplink reference signal and the downlink reference signal respectively use different ones in the first time-frequency resource Orthogonal resources of time; and / or,

With reference to any implementation manner, in a fifth possible implementation manner of the foregoing aspect, the first resource unit that is included in the first time-frequency resource sends a downlink reference signal, where the first resource unit is The resource unit is different, and the second resource unit is a resource unit used by the first UE to send an uplink reference signal, where the first time-frequency resource is included.

In conjunction with the fourth possible implementation manner, in a sixth possible implementation manner of the sixth aspect, the transmitter does not send a signal on the second resource unit.

With the implementation of any of the foregoing implementations, in a seventh possible implementation manner of the sixth aspect, the transmitter is further configured to send, to the first UE, zero-power resource unit information, that the first UE is in the zero No signal is transmitted on the resource unit indicated by the power resource unit information.

With reference to any implementation manner, in the eighth possible implementation manner of the sixth aspect, the transmitter is further configured to send zero power resource unit information to the second UE, so that the second UE is in the zero power resource. The resource unit indicated by the unit information does not receive a signal.

In combination with any of the foregoing implementation manners, in the ninth possible implementation manner of the sixth aspect, the zero power resource unit information includes: a reference signal transmission period and a time offset information.

With the implementation of any of the foregoing implementations, in the tenth possible implementation manner of the sixth aspect, the uplink signal includes an uplink reference signal for detecting, and the downlink signal includes a downlink demodulation reference signal and a useful signal, or The downlink signal includes a downlink reference signal for sounding, and the uplink signal includes an uplink demodulation reference signal and a useful signal.

With reference to any one of the foregoing implementation manners, in the eleventh possible implementation manner of the sixth aspect, the receiver is further configured to receive first scheduling signaling, where the first scheduling signaling is used to indicate the first network The device transmits a signal on the first time-frequency resource.

In conjunction with any of the foregoing implementation manners, in the twelfth possible implementation manner of the sixth aspect, the signaling that is sent and received by the first network device and the first UE is UE-specific signaling. With reference to any implementation manner, in the thirteenth possible implementation manner of the sixth aspect, the receiver is further configured to receive type indication information sent by any UE, and learn, according to the type indication information, any one of the UEs. Whether a signal can be transmitted in the first time-frequency resource.

With reference to the twelfth possible implementation manner, in the fourteenth possible implementation manner of the sixth aspect, the type indication information includes interference deletion capability identification information of any one of the UEs or supported by any one of the UEs The system version information, the interference deletion capability identifier information is used to indicate whether any of the UEs has interference cancellation capability.

In combination with the foregoing implementation, in a fifteenth possible implementation manner of the sixth aspect, the transmitter is further configured to send a cell broadcast message, where the cell broadcast message is used to notify the cell in which the first network device is located. The other network device or the UE sends an uplink signal in the first time-frequency resource. According to a seventh aspect, a second network device is provided, including: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The receiver is configured to receive a downlink signal that is sent by the first network device in the first time-frequency resource, where the receiver is further configured to receive an uplink signal that is sent by the first UE in the first time-frequency resource;

The processor is configured to acquire, according to the downlink signal and the uplink signal, a useful signal sent by the first UE or sent by a first network device.

With reference to the seventh aspect, in a first possible implementation manner of the seventh aspect, the receiver is configured to receive a downlink signal that is sent by the first network device in the first time-frequency resource, and the first UE Uplink signal

The processor is configured to perform interference _cancellation on the downlink signal sent by the first network device in the first time-frequency resource and the interference signal in the uplink signal of the first UE, to obtain the first UE or the first A network device sends a useful signal for transmission.

In conjunction with any of the foregoing implementation manners, in a second possible implementation manner of the seventh aspect, the receiver is further configured to receive processing information about the interference signal. In combination with the foregoing implementation manner, in a third possible implementation manner of the seventh aspect, the receiver is further configured to receive a first scheduling signaling, where the first scheduling signaling is used to indicate the second network device The signal is received in the first time-frequency resource.

With reference to any implementation manner, in a fourth possible implementation manner of the seventh aspect, the receiver is further configured to receive a cell broadcast message, where the cell broadcast message is used to notify the second network device that the The downlink signal is transmitted and/or the uplink signal is received in a time-frequency resource.

With reference to any implementation manner, in the fifth possible implementation manner of the seventh aspect, the signaling that is sent and received by the second network device is UE-specific signaling. In an eighth aspect, a first user equipment is provided, where the first user equipment includes: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The transmitter is configured to send an uplink signal in a first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first network device sends a downlink signal, and the first time-frequency resource that carries the downlink signal The included subcarriers and the subcarriers carrying the uplink signals correspond to the same frequency;

With reference to the eighth aspect, in the first possible implementation manner of the eighth aspect, the downlink signal and the uplink signal both include a useful signal, and the resource unit corresponding to any one of the uplink signal and the downlink signal Resource elements corresponding to useful signals in another signal do not overlap.

In combination with the foregoing implementation manner, in a second possible implementation manner of the foregoing aspect, the receiver is configured to receive subcarrier mapping mode indication information, where the subcarrier mapping mode indication information is used to indicate that the first UE sends Or the subcarrier mapping method used when receiving signals.

In combination with the foregoing implementation manner, in the third possible implementation manner of the foregoing aspect, the downlink signal includes a downlink reference signal, the uplink signal includes an uplink reference signal, and the uplink reference signal and the downlink reference signal are respectively used by Different orthogonal resources on the first time-frequency resource are described. In conjunction with the foregoing third possible implementation manner, in the fourth possible implementation manner of the eighth aspect, the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource, including: The signal and the downlink reference signal respectively use orthogonal resources of different frequencies in the first time-frequency resource; and/or,

With the implementation of any of the foregoing implementations, in a fifth possible implementation manner of the eighth aspect, the transmitter is configured to send, in a first resource unit of the first time-frequency resource, a downlink reference signal, where the first resource unit is Different from the second resource unit, the second resource unit is a resource unit used by the first UE to send an uplink reference signal.

In a sixth possible implementation manner of the eighth aspect, the transmitter is further configured to not send a signal on the first resource unit.

With reference to any implementation manner, in a seventh possible implementation manner of the foregoing aspect, the receiver is configured to receive information about zero-power resource unit, where the first UE is on a resource unit indicated by the zero-power resource unit information Do not send a signal.

With reference to any implementation manner, in an eighth implementation manner of the eighth aspect, the receiver receives zero power resource unit information, where the first UE does not use the resource unit indicated by the zero power resource unit information. receive signal.

In combination with any of the foregoing implementation manners, in the ninth possible implementation manner of the eighth aspect, the zero power resource unit information includes: a reference signal transmission period and a time offset information.

With reference to any implementation manner, in a tenth possible implementation manner of the foregoing aspect, the receiver is further configured to receive a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE is The signal is sent on the first time-frequency resource.

With reference to any one of the foregoing implementation manners, in the eleventh possible implementation manner of the eighth aspect, The receiver is configured to send the type indication information to the first network device, and learn, according to the type indication information, whether the first UE sends a signal in the first time-frequency resource.

In conjunction with the foregoing ninth possible implementation manner, in the twelfth possible implementation manner of the eighth aspect, the type indication information includes interference deletion capability identification information of the first UE or a system supported by the first UE. The version information, the interference deletion capability identifier information is used to indicate whether the first UE has an interference cancellation capability.

With reference to any implementation manner, in a thirteenth possible implementation manner of the foregoing aspect, the receiver is configured to receive a cell broadcast message of a cell where the first UE is located, where the cell broadcast message carries the first UE The receiving or sending mode supported by the cell, according to the cell broadcast message, whether the cell where the first UE is located supports the sending mode of the first UE itself.

In combination with any of the foregoing implementation manners, in the fourteenth possible implementation manner of the eighth aspect, the signaling that is sent and received by the first network device and the first UE is UE-specific signaling.

With reference to any one of the foregoing implementation manners, in the fifteenth possible implementation manner of the eighth aspect, the processor is configured to: when receiving the first scheduling signaling in the same transmission time interval, and only scheduling the uplink or downlink transmission The second scheduling signaling ignores the first scheduling signaling. A ninth aspect, a second user equipment is provided, where the second user equipment includes: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The receiver is configured to receive a downlink signal sent by the second network device in the first time-frequency resource;

The receiver is further configured to receive an uplink signal sent by the first UE in the first time-frequency resource, where the processor is configured to acquire, according to the downlink signal and the uplink signal, the first UE or Two useful signals sent by the network device.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the receiver is configured to receive a downlink signal that is sent by the second network device in the first time-frequency resource, and the first UE Uplink signal The processor is configured to perform interference _cancellation on the downlink signal sent by the second network device in the first time-frequency resource and the interference signal in the uplink signal of the first _UE , and obtain the second network device to send Useful signal.

In a second possible implementation manner of the ninth aspect, the receiver is further configured to receive processing information about the interference signal.

In combination with the foregoing implementation manner, in a third possible implementation manner of the foregoing aspect, the receiver is further configured to receive a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE is The signal is received in the first time-frequency resource.

With the implementation of any of the foregoing implementations, in a fourth possible implementation manner of the ninth aspect, the transmitter is further configured to send the type indication information to the first network device, and learn the second information according to the type indication information. Whether the UE transmits a signal in the first time-frequency resource.

With reference to the foregoing fourth possible implementation manner, in a fifth possible implementation manner of the ninth aspect, the type indication information includes interference deletion capability identification information of the second UE or a system version supported by the second UE The information, the interference deletion capability identifier information is used to indicate whether the second UE has an interference cancellation capability.

With reference to any implementation manner, in a sixth possible implementation manner of the foregoing aspect, the receiver is further configured to receive a cell broadcast message of a cell where the second UE is located, where the cell broadcast message carries the second The receiving or sending mode supported by the cell in which the UE is located, according to the cell broadcast message, whether the cell where the second UE is located supports the sending mode of the second UE itself.

In combination with the foregoing implementation manner, in a seventh possible implementation manner of the ninth aspect, the processor is further configured to: when receiving the first scheduling signaling in the same transmission time interval, or only for scheduling uplink or downlink transmission The second scheduling signaling ignores the first scheduling signaling. A tenth aspect, a third user equipment is provided, including: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The transmitter is configured to send first scheduling signaling, where the first scheduling signaling is used to indicate the first UE Or the first network device sends a signal according to the information included in the first scheduling signaling, where the first scheduling signaling is further used to indicate that the second UE or the second network device is included according to the first scheduling signaling. Information received signal. In an eleventh aspect, a wireless transmission method is provided, including:

The user equipment receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the information included in the first scheduling signaling, where the first scheduling signaling is further And configured to instruct the second UE or the second network device to receive a signal according to information included in the first scheduling signaling;

Determining, by the user equipment, the device type of the device according to the device type configuration information;

When the user equipment is the first UE, the user equipment sends a signal according to the information included in the first scheduling signaling;

When the user equipment is a second UE, the user equipment receives a signal according to information included in the first scheduling signaling.

With reference to the eleventh aspect, in a first possible implementation manner of the eleventh aspect, the first scheduling signaling includes device type configuration information; or

Before the user equipment determines the device type of the device according to the device type configuration information, the method further includes:

The user equipment receives device type configuration information, where the device type configuration information is used to configure a device type of the user equipment.

With reference to any of the foregoing possible implementation manners, in a second possible implementation manner of the foregoing aspect, the first scheduling signaling includes time-frequency resource information, where the first scheduling signaling is used to indicate the first UE or The first network device sends a signal according to the time-frequency resource information, where the first scheduling signaling is further used to indicate that the second UE or the second network device receives the signal according to the time-frequency resource information.

In combination with any of the foregoing possible implementation manners, in a third possible implementation manner of the eleventh aspect, the first scheduling signaling further includes: modulation coding scheme information, transmission layer number information, and reference signal orthogonal Any of the resource information.

In combination with any of the foregoing possible implementation manners, in a fourth possible implementation manner of the eleventh aspect, the first scheduling signaling is configured on different UEs or different network devices or different types of devices. The included signaling fields are parsed differently.

With reference to any of the foregoing possible implementation manners, in a fifth possible implementation manner of the eleventh aspect, configured to analyze the transmission layer number information or configured on different UEs or different network devices or different types of devices The reference signal orthogonal resource information is parsed differently.

With reference to any of the foregoing possible implementation manners, in a sixth possible implementation manner of the eleventh aspect, the parsing manner configured on the different UEs or different network devices or different types of devices for parsing the modulation and coding scheme is different.

In conjunction with any of the foregoing possible implementation manners, in a seventh possible implementation manner of the foregoing aspect, before the user equipment receives the first scheduling signaling, the method further includes:

The user equipment receives the MCS offset value information, and sends or receives a signal according to the offset value information and the first scheduling signaling.

With reference to any one of the foregoing possible implementation manners, in an eighth possible implementation manner of the eleventh aspect, the first scheduling signaling includes a second information, where the first scheduling signaling is further used to indicate the first UE or The first network device reads the second information, where the first scheduling signaling is further used to indicate that the second UE or the second network device ignores the second information.

In conjunction with any of the foregoing possible implementation manners, in a ninth possible implementation manner of the eleventh aspect, the second information includes at least one of power control information, precoding vector, or matrix information.

With reference to any of the foregoing possible implementation manners, in a tenth possible implementation manner of the eleventh aspect, the first scheduling signaling further includes third information, where the third information is used to indicate different UEs or network devices. Use different values to send or receive signals.

In combination with any of the foregoing possible implementation manners, in the eleventh possible implementation manner of the eleventh aspect, before the user equipment receives the first scheduling signaling, the method further includes:

Receiving specific scrambling code information; Correspondingly, the receiving, by the user equipment, the first scheduling signaling includes: receiving, by using the specific scrambling code information, the first scheduling signaling.

In conjunction with any of the foregoing possible implementation manners, in a twelfth possible implementation manner of the eleventh aspect, the first scheduling signaling is used to indicate that the first scheduling information that is sent in the first transmission time interval is received The UE or the network device sends or receives a signal according to the first scheduling signaling at a second transmission time interval, and the duration between the second transmission time interval and the first transmission time interval is an integer multiple transmission time. interval.

With reference to any of the foregoing possible implementation manners, in the thirteenth possible implementation manner of the eleventh aspect, the duration between the second transmission time interval and the first transmission time interval is the same as that of the The value of the transmission time interval for transmitting the scheduling signaling for scheduling the uplink transmission and the transmission time interval for the uplink transmission.

In combination with any of the foregoing possible implementation manners, in the fourteenth possible implementation manner of the eleventh aspect, the user equipment receives the first scheduling signaling or only schedules the uplink or downlink in the same transmission time interval. The second scheduling signaling of the transmission, ignoring the first scheduling signaling. According to a twelfth aspect, a user equipment is provided, including: a transmitter, a receiver, and a processor, where the transmitter and the receiver are respectively coupled to the processor,

The receiver is configured to receive a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to information included in the first scheduling signaling, where The scheduling signaling is further used to indicate that the second UE or the second network device receives the signal according to the information included in the first scheduling signaling;

The processor is configured to determine a device type of the device according to the device type configuration information;

And when the user equipment is the first UE, sending, by the transmitter, a signal according to the information included in the first scheduling signaling;

And when the user equipment is a second UE, the user equipment receives a signal according to the information included in the first scheduling signaling by using the receiver. The beneficial effects of the technical solutions provided by the embodiments of the present invention are:

The present invention proposes that the uplink signal and the downlink signal are transmitted on the same time-frequency resource, thereby improving the transmission efficiency by reusing the radio resource; and in order to solve the interference problem between the uplink signal and the downlink signal in the mode, the present invention proposes an uplink signal. The sub-carriers of the downlink signal correspond to the same frequency, so that there is no inter-carrier interference between the uplink and downlink signals, thereby making it possible to transmit the uplink signal and the downlink signal at the same frequency, thereby achieving the purpose of improving the transmission efficiency while avoiding interference. DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work.

1 is a schematic diagram of a multi-carrier signal transmission process in the prior art;

2 is a schematic diagram of subcarrier mapping of uplink and downlink transmission provided in an embodiment of the present invention; FIG. 3 is a flowchart of a method for wireless transmission provided in an embodiment of the present invention;

4a is a schematic structural diagram of a communication system provided in an embodiment of the present invention;

4b is a schematic diagram of an interaction method of a communication system provided in an embodiment of the present invention; FIG. 4c is a flowchart of a wireless transmission method performed on the basis of the communication system of FIG. 4a; FIG. 4d is a flowchart provided in the embodiment of the present invention. A schematic diagram of an interaction method of a communication system; FIG. 5a is a schematic diagram of a resource unit mapping provided in an embodiment of the present invention;

FIG. 5b is a schematic diagram of resource element mapping provided in an embodiment of the present invention; FIG.

FIG. 5c is a schematic diagram of resource element mapping provided in an embodiment of the present invention; FIG.

FIG. 5 is a schematic diagram of a resource unit mapping provided in an embodiment of the present invention; FIG.

FIG. 6a is a schematic diagram of a communication system provided in an embodiment of the present invention; FIG.

Figure 6b is a schematic diagram of a communication system provided in an embodiment of the present invention;

FIG. 7 is a schematic diagram of a signal sent by a first UE according to an embodiment of the present invention; FIG. Figure 7b is a schematic diagram of a signal sent by a first network device according to an embodiment of the present invention; Figure 7c is a schematic diagram of a signal sent by a first UE according to an embodiment of the present invention;

FIG. 8 is a flowchart of a wireless transmission method according to an embodiment of the present invention;

9a is a schematic diagram of a communication system provided in an embodiment of the present invention;

FIG. 9b is a schematic diagram of a signal received by a second network device or a second UE according to an embodiment of the present disclosure;

FIG. 9c is a schematic diagram of interference cancellation according to interference source-based modulation mode information provided in an embodiment of the present invention; FIG.

FIG. 9d is a schematic diagram of interference cancellation of MCS information based on interference sources according to an embodiment of the present invention; FIG.

FIG. 10 is a flowchart of a wireless transmission method according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a first network device according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram of a second network device according to an embodiment of the present disclosure;

FIG. 13 is a schematic structural diagram of a first user equipment according to an embodiment of the present disclosure;

FIG. 14 is a schematic structural diagram of a second user equipment according to an embodiment of the present disclosure;

FIG. 15 is a schematic structural diagram of a third user equipment according to an embodiment of the present disclosure;

16 is a flowchart of a wireless transmission method according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. detailed description

In order to facilitate the understanding of the present invention, the subcarrier mapping involved in the embodiments of the present invention is introduced here:

1 is a schematic diagram of a multi-carrier signal transmission process in the prior art. Referring to FIG. 1, after the information bits are channel-coded and modulated, they are mapped to the frequency corresponding to the sub-carriers (hereinafter referred to as sub-carrier mapping) by an Inverse Discrete Fourier Transform (IDFT) operation to form a useful signal. Then with Demodulation Reference Signal (DM RS) Merging, and finally sending a signal with a Cyclic Prefix (CP). The subcarrier mapping process is a process of placing the generated signal stream on a frequency corresponding to the corresponding subcarrier (for example, placing the ith signal on the frequency corresponding to the kth subcarrier), The characteristics of carrier transmission itself, the signals transmitted on different subcarriers are orthogonal to each other, so after the signals to be transmitted (such as the signal after modulation in FIG. 1) are mapped to each subcarrier, these signals are not mutually Can cause interference. The receiving process of the signal corresponds to the opposite. After the receiver removes the CP, it needs to separate the DM RS and the useful signal accordingly, and then perform channel estimation according to the received DM RS, and according to the corresponding mapping mode of the transmitter. The signal stream is acquired on the carrier, and coherent demodulation is performed according to the result of the channel estimation, and finally the information bits are recovered by decoding. If the reference signal (Reference Signal, RS) for detecting is not sent, the transmitter directly generates the RS and adds the CP to transmit, which is not described here.

The signal received by the network device or the UE is a superposition of a waveform having a different frequency and a direct current (DC) level. Since the energy of the DC level is high, it is useful to use a frequency corresponding to the DC level to transmit a useful signal. The signal is greatly disturbed by the DC level, so the frequency corresponding to the DC level is usually not used to transmit the useful signal, which is the most intermediate frequency of the system bandwidth (hereinafter referred to as the DC frequency). Also, in order to minimize the influence of the DC level on other signals, the frequency of the subcarriers closest to the DC frequency that can be used to transmit the wanted signal should be as large as possible with the DC frequency.

In the LTE system, the subcarrier mapping mode of the uplink and downlink transmission is different. Because the uplink transmission time of the UE is limited by the requirement that the Peak-to-Average Power Ratio (PAPR) cannot be too high, The UE transmits the uplink signal using the SC-FDMA multiple access method and the signal is required to be continuous in the frequency domain, that is, the signal must be mapped to subcarriers that are continuous in frequency. In the downlink transmission, if the signal transmitted by the network device is not limited by the PAPR, the downlink signal is transmitted by using the OFDMA multiple access mode, and the signal does not need to be continuous in the frequency domain.

2 is a schematic diagram of subcarrier mapping of uplink and downlink transmissions according to an embodiment of the present invention. Referring to FIG. 2, the most intermediate frequency (DC frequency) of the system bandwidth is f—0 (in Hz), and subcarriers. The interval is Δ ί"; for the uplink, the subcarrier frequencies are f - 0 ± l / 2Af, f - 0 ± 3 / 2Af, f - 0 ± 5 / 2Af, ...; For the downlink, the frequency of the subcarrier They are f_0±Af, f—0±2Af, f—0±3Af,... That is, the uplink subcarriers are mapped in such a way that the frequencies of all subcarriers are at least separated from the most intermediate frequency of the system bandwidth. 1/2 subcarrier width, and the downlink subcarriers are mapped in such a manner that the frequencies of all subcarriers are separated from the most intermediate frequency of the system bandwidth by at least one subcarrier width, wherein the downlink transmission signal avoids the DC frequency. The mapping between the carrier and the downlink subcarriers has half-subcarrier interleaving, and the frequencies to which they are mapped are different. Because the uplink and downlink subcarrier mapping modes are different, the frequency of the uplink and downlink subcarriers is misaligned (or There is a frequency offset), and the frequency of the subcarriers is different, which causes the inter-carrier interference between the uplink and downlink signals to be severe when the same frequency band is used to transmit the uplink and downlink signals, and the receiving device cannot uplink signals and downlink. No separate.

It should be understood that for a conventional Frequency Division Duplex (FDD) system, the system bandwidths of the uplink and downlink signals are different, and the f_0 of the uplink signal indicates the middlemost frequency of the uplink system bandwidth, and the downlink signal F-0 represents the lowest intermediate frequency of the downlink system bandwidth; for a traditional Time Division Duplex (TDD) system, the system bandwidth of the uplink and downlink signals is the same.

In order to facilitate the understanding of the present invention, the network device, user equipment, and application scenarios involved in the present invention are separately introduced:

In the embodiment of the present invention, the network device may be a base station (BS), an access point (AP), a remote radio equipment (RRE), and a remote radio port (Remote Radio Head, RRH), Remote Radio Unit (RRU), Relay Node, etc. The relationship between the network device and the cell is not limited, and may be one network device corresponding to one or more cells, or one cell corresponding to one or more network devices. The transmission or reception of the signal by the network device may be a direct operation of the network device, or may be an indirect behavior of the network device under the control of the device connected to it by wire or wirelessly.

In the embodiment of the present invention, the user equipment UE may be a device that provides voice and/or data connectivity to the user, including a wireless user equipment or a wired user equipment. Wireless user equipment can be wireless A hand-held device that connects functions, or other processing device that is connected to a wireless modem, and a user device that communicates with one or more core networks via a wireless access network. For example, a wireless user device can be a mobile phone (or "cellular" phone) and a computer with a mobile terminal. As another example, the wireless user device can also be a portable, pocket, handheld, computer built-in or in-vehicle mobile user device.

The UE receives or transmits a signal by receiving scheduling signaling of the network device. The embodiments of the present invention do not specifically limit the types of specific network devices and UEs. The present invention is applicable to any wireless communication system, and is particularly suitable for use in a flexible duplex communication system, involving different uplink and downlink directions or duplexes of corresponding time variants such as service adaptation, interference adaptation, resource adaptation, and the like. The transmitting and receiving devices, that is, the devices involved can change the allocation of uplink and downlink resources according to changes in services, interference situations, resource utilization, and the like, wherein the uplink and downlink resources include time and/or frequency resources.

The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

FIG. 3 is a flowchart of a method for wireless transmission provided in an embodiment of the present invention. Referring to FIG. 3, the method includes:

301: The first network device sends a downlink signal in the first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first UE sends an uplink signal, and the first time-frequency resource that carries the downlink signal The subcarrier included in the subcarrier and the first time-frequency resource carrying the uplink signal correspond to the same frequency;

At least one of the downlink signal and the uplink signal includes a useful signal, and a resource unit corresponding to the reference signal included in any one of the uplink signal and the downlink signal (Resource)

Element, RE) does not overlap with a resource unit corresponding to a useful signal in another signal, wherein the time-frequency resource includes a plurality of resource units, and each resource unit corresponds to one symbol of the time domain and one sub-carrier of the frequency domain.

The step 301 specifically includes: the first network device mapping the signal to be sent to the first time frequency At the source, the downlink signal is sent in the first time-frequency resource. Correspondingly, the first UE, when the first network device sends the downlink signal, maps the signal that needs to be sent to the first time-frequency resource, and sends the uplink signal in the first time-frequency resource.

Preferably, the first time-frequency resource is at least one PRB (Physical Resource Block) pair (PRB pair). Correspondingly, the first network device or the first UE transmits or receives a signal according to the assigned one or more PRB pairs. The minimum granularity of the uplink signal or the downlink signal scheduled to be transmitted is a PRB pair, and one PRB pair includes one subframe in the time domain and multiple subcarriers in the frequency domain. A PRB pair includes a plurality of REs (Resource Elements), each resource unit corresponds to one symbol of the time domain and one subcarrier of the frequency domain; and the uplink signal or the downlink signal is transmitted in the PRB pair, including in the PRB pair. The uplink signal or the downlink signal is transmitted on part of the RE, part of the symbol or all of the REs.

The wireless transmission in the embodiment of the present invention is applied to a communication system using a multi-carrier technology. Preferably, the multi-carrier technology may be OFDM or SC-FDMA, and the communication system may be an LTE system. In the LTE system, one PRB pair includes one subframe of the time domain and 12 subcarriers of the frequency domain. A radio frame includes 10 subframes, each subframe includes 14 symbols, one radio frame has a length of 10 ms, and the length of one subframe is lms.

The signal carried by the downlink signal sent by the first network device is any one of the following: (1) a downlink reference signal; (2) a downlink reference signal and a useful signal. The signal carried by the uplink signal sent by the first UE is any one of the following: (1) an uplink reference signal; (2) an uplink reference signal and a useful signal.

The useful signal is information transmitted between the network device and the network device, or between the network device and the UE, or between the UE and the UE, and the useful signal is a signal carrying user data, such as a physical downlink shared channel (Physical Downlink Shared Channel). , PDSCH) signal, or a signal carrying control information, such as a Physical Downlink Control Channel (PDCCH) or an Enhanced-Physical Downlink Control Channel (EPDCCH) signal. When both the uplink signal and the downlink signal include the RS and the useful signal, in order to avoid interference between the RS and the useful signal, the signal quality is affected, and the resource unit corresponding to any one of the uplink signal and the downlink signal and the other signal The resource elements corresponding to the useful signals do not overlap. Such as, When the DM RS is included in both the uplink signal and the downlink signal, and the useful signal is included in both the uplink signal and the downlink signal, in order to avoid interference between the DM RS in the uplink signal and the useful signal in the downlink signal, the signal transmission quality is affected. Then, in the first time-frequency resource, the resource unit corresponding to the DM RS of the uplink signal and the resource unit corresponding to the useful signal in the downlink signal do not overlap.

The difference between the embodiment of the present invention and the prior art is that, in the prior art, in order to avoid mutual interference between the uplink signal and the downlink signal, generally, the uplink signal and the downlink signal are sent at different times for the same cell, That is, the TDD mode is adopted, or the carrier is transmitted on different carriers, that is, the FDD mode is adopted. In the embodiment of the present invention, the present invention proposes that the uplink signal and the downlink signal are transmitted in the same time-frequency resource, thereby being reused ( Reuse ) Wireless resources to improve the efficiency of transmission.

In order to solve the inter-carrier interference (ICI) caused by different subcarrier mapping modes between the uplink signal and the downlink signal in this mode, the two signals cannot be received. The problem of the machine identification, the present invention proposes that the subcarriers of the uplink signal and the downlink signal correspond to the same frequency (the uplink signal and the downlink signal adopt the same subcarrier mapping manner), thereby making it possible to efficiently transmit the uplink signal and the downlink signal in the same frequency. That is, the receiving device is prevented from reducing the efficiency due to inter-carrier interference between the uplink signal and the downlink signal when receiving one of the signals, and the receiving device can also be allocated by assigning different orthogonal resources to the uplink reference signal and the downlink reference signal. The uplink signal and the downlink signal can be identified, and a receiving algorithm such as interference cancellation is used to enhance the receiving performance, thereby achieving the purpose of improving transmission efficiency while avoiding or reducing interference. Further, interference between the two types of signals is further reduced by using the non-overlapping resource elements for the transmission of the useful signal and the DM RS. Optionally, before the first network device of the embodiment shown in FIG. 3 sends the downlink signal in the first time-frequency resource, the method further includes: the first network device sending the sub-carrier mapping mode indication information to the first UE And the subcarrier mapping manner indication information is used to indicate a subcarrier mapping manner used when the first UE sends or receives a signal.

In the existing LTE system, the downlink signal sent by the network device and the uplink signal sent by the UE are adopted. Different subcarrier mapping modes, the design is a default design, that is, the subcarrier included in the first time-frequency resource used by the downlink signal sent by the network device and the first time-frequency resource used by the uplink signal sent by the UE are included. The subcarriers correspond to different frequencies. Therefore, in the present invention, in order to maintain compatibility, the network device may send the subcarrier mapping mode indication information to the UE in advance, and instruct the UE to adopt the subcarrier mapping manner in the prior art, or the present invention. The proposed subcarrier mapping mode is used to transmit or receive signals. Specifically, for example, the network device sends information to the UE in advance, instructing the UE to use the subcarrier mapping manner corresponding to the downlink signal in the prior art to transmit the uplink signal in the first time period, and maintain the prior art in other time periods. The carrier mapping mode, so that the benefits brought by the present invention can be obtained in the first time period, and the normal transmission/reception of other UEs using the prior art is not affected in other time periods; or the network device sends information to the UE in advance, indicating The UE uses the subcarrier mapping manner corresponding to the uplink signal in the prior art to receive the downlink signal in the first period, and maintains the prior art subcarrier mapping manner in other periods. Specifically, the indication information may include time period information, which is convenient for the UE to use the method of the present invention in a corresponding time period.

Further optionally, based on the technical solution of the embodiment shown in FIG. 3, the downlink signal and the uplink signal both include a useful signal, and resources corresponding to any one of the uplink signal and the downlink signal The resource elements corresponding to the useful signals in the unit and another signal do not overlap.

When both the downlink signal and the uplink signal include a useful signal, the uplink signal includes an uplink reference signal and a useful signal; and the downlink signal includes a downlink reference signal and a useful signal.

Specifically, in order to avoid interference between the uplink reference signal in the uplink signal and the useful signal in the downlink signal, the resource elements in the uplink reference signal and the downlink signal in the uplink signal do not overlap; The interference between the useful signal and the downlink reference signal in the downlink signal does not overlap with the resource elements in the uplink signal and the downlink reference signal in the downlink signal. 4a is a schematic structural diagram of a communication system provided in an embodiment of the present invention. Figure 4c is a flow diagram of a method of wireless transmission performed on the basis of the communication system of Figure 4a. In Figure 4a, the communication system The first network device, the second network device, and the first UE are included. On the basis of the embodiment shown in FIG. 4a, the embodiment of the present invention provides an interaction method as shown in FIG. 4b. As shown in FIG. 4b, the communication process of the first network device, the second network device, and the first UE may include The following steps:

4001: The first network device sends a downlink signal to the second network device in the first time-frequency resource, where the downlink signal includes a downlink reference signal and a useful signal;

4002: The first UE sends an uplink signal to the second network device in the first time-frequency resource, where the uplink signal includes an uplink reference signal, and the sub-carrier and the carrier included in the first time-frequency resource that carries the downlink signal The subcarriers of the uplink signal correspond to the same frequency, and the resource unit corresponding to the uplink reference signal included in the uplink signal and the resource unit corresponding to the useful signal in the downlink signal do not overlap, wherein the first time-frequency resource includes multiple Resource units, each resource unit corresponding to one symbol of the time domain and one subcarrier of the frequency domain.

In the figure, only the following row signal includes a useful signal, and the resource unit corresponding to the uplink reference signal included in the uplink signal and the resource unit corresponding to the useful signal in the downlink signal do not overlap as an example. Optionally, the downlink signal includes a downlink reference signal, where the uplink signal includes an uplink reference signal, and the uplink reference signal and the downlink reference signal respectively use the foregoing, according to the technical solution of the embodiment shown in FIG. Different orthogonal resources on a time-frequency resource.

The downlink signal sent by the first network device includes at least a downlink reference signal, and the downlink reference signal may be an RS for measurement or an RS for demodulation, such as a Channel State Information-Reference Signal (CSI-RS). In the LTE system, the CSI-RS is transmitted by the network device to facilitate the UE to measure downlink channel state information (CSI); the latter, for example, the downlink DM RS, is used for the auxiliary receiver to perform coherent demodulation on the downlink useful signal. .

The uplink signal sent by the first UE includes at least an uplink reference signal, and the uplink reference signal may also be an RS for measurement or an RS for demodulation, such as a Sounding Reference Signal (SRS), in an LTE system, SRS is sent by the UE to facilitate network device measurement The uplink CSI, such as the uplink DM RS, is used to assist the receiver in coherent demodulation of the uplink useful signal.

The uplink reference signal sent by the first UE and the downlink reference signal sent by the first network device respectively use different orthogonal resources on the first time-frequency resource, and different orthogonal resources on the first time-frequency resource include: different frequencies, Different times, different orthogonal codes or any combination of the three.

When the signal is transmitted by coherent demodulation, the demodulation reference signal (DM RS ) is usually included in the uplink signal or the downlink signal, and part of the resources in the first time-frequency resource are used to carry the DM RS, which is convenient. The receiving device (network device or UE) performs channel estimation based on the DM RS. After receiving the signal including the DM RS, the receiving device estimates the channel attenuation according to the DM RS, and performs coherent detection on the useful signal to make a reasonable scheduling according to the channel condition. Specifically, as shown in FIG. 4c, the communication process of the first network device, the second network device, and the first UE may include the following steps:

4101: The first network device sends a downlink signal to the second network device in the first time-frequency resource, where the downlink signal includes a downlink reference signal;

4102: The first UE sends an uplink signal to the second network device in the first time-frequency resource, where the uplink signal includes an uplink reference signal, and the sub-carrier and the bearer included in the first time-frequency resource that carries the downlink signal The subcarriers of the uplink signal correspond to the same frequency, and the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource.

The present invention proposes that the uplink signal and the downlink signal are transmitted on the same time-frequency resource, thereby improving the transmission efficiency by reusing the radio resource; and in order to solve the interference problem between the uplink signal and the downlink signal in the manner, the present invention proposes an uplink signal. The subcarriers of the downlink signal correspond to the same frequency, thereby reducing inter-carrier interference between the uplink and downlink signals. Further, in order to avoid interference between the uplink signal and the reference signal included in the downlink signal, the uplink and downlink reference signals are respectively transmitted using different orthogonal resources, which greatly reduces the downlink signal in the uplink (or downlink) signal to be downlinked (or Uplink) reference signal The interference, so that the receiving device (such as the second network device in FIG. 4c) can estimate the channel fading corresponding to the uplink and downlink signals respectively, so that the uplink signal and the downlink signal are transmitted in the same frequency, and the interference is avoided. Improve the efficiency of transmission. The present invention is also compatible with a lower version of the UE access system, which facilitates smooth evolution of the system. For example, the first UE transmits an uplink signal by using an existing LTE system, and the first network device uses the method of the present invention, A UE transmits a downlink signal to the second network device at the same frequency as the uplink signal, and the downlink reference signal included in the downlink signal and the uplink reference signal included in the uplink signal use different orthogonal resources, and the second network device can simultaneously Receiving the uplink signal sent by the first UE and the downlink signal sent by the first network device, that is, only the network device is enhanced to obtain the technical benefit brought by the present invention, without enhancing the UE. Similarly, the present invention is also applicable to the case where the device that receives the uplink signal and the downlink signal is the second UE. As shown in FIG. 4d, the communication process of the first network device, the second UE, and the first UE may include the following steps:

4201: The first network device sends a downlink signal in the first time-frequency resource, where the downlink signal includes a downlink reference signal.

4202: The first UE sends an uplink signal in the first time-frequency resource, where the uplink signal includes an uplink reference signal, a subcarrier included in the first time-frequency resource that carries the downlink signal, and a bearer that carries the uplink signal. The subcarriers correspond to the same frequency and the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource.

The specific implementation is similar to the above, and will not be described here. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the uplink reference signal and the downlink reference signal respectively use orthogonal resources of different frequencies on the first time-frequency resource; and/or The uplink reference signal and the downlink reference signal respectively use orthogonal resources at different times on the first time-frequency resource; and/or,

The uplink reference signal and the downlink reference signal respectively use different on the first time-frequency resource Orthogonal resources of orthogonal codes.

In order to make it easier for those skilled in the art to understand the use of different orthogonal resources, Figures 5a-5d are schematic diagrams of resource unit mappings provided in embodiments of the present invention. FIG. 5a is a schematic diagram of resource element mapping according to an embodiment of the present invention. Referring to FIG. 5a, in a first time-frequency resource, a DM RS in an uplink signal and a resource unit corresponding to a DM RS in a downlink signal are the same, and are used. All the resource elements of the two symbols with the period symbol number 3 and 10, in this case, in order to make the DM RS in the uplink signal and the DM RS in the downlink signal do not interfere with each other, the uplink signal is sent by using the code division orthogonal method. The DM RS and the DM RS in the downlink signal, that is, the DM RS in the uplink signal and the DM RS in the downlink signal use different orthogonal codes.

FIG. 5b is a schematic diagram of resource element mapping according to an embodiment of the present invention. Referring to FIG. 5b, in the first time-frequency resource, the DM RS in the uplink signal and the DM RS in the downlink signal use orthogonal time at different times. The resource, the DM RS in the uplink signal has the time slot symbol number of 3, 10 in the position of the two columns, and the DM RS in the downlink signal has the time slot symbol number of 4, 11 in the position of the two columns. This method can also be called A method of time division orthogonal.

FIG. 5c is a schematic diagram of a resource unit mapping according to an embodiment of the present invention. Referring to FIG. 5c, in the first time-frequency resource, the DM RS in the uplink signal and the DM RS in the downlink signal have a period symbol number of 3, 10 In the position of the two columns, however, it can be seen from the DM RS in the uplink signal and the frequency band (subcarrier) number corresponding to the DM RS in the downlink signal, that the DM RS in the uplink signal and the DM RS in the downlink signal are used. Orthogonal resources of different frequencies, this method can also be called frequency division orthogonal method.

FIG. 5d is a schematic diagram of resource element mapping according to an embodiment of the present invention. Referring to FIG. 5d, in a first time-frequency resource, a DM RS in an uplink signal and a period symbol number and a frequency band number of a DM RS in a downlink signal are used. Not the same, this method is a time division frequency division orthogonal method.

Preferably, on the resource unit corresponding to the uplink reference signal and the downlink reference signal in FIG. 5a-5d, the first network device and the first UE do not send a useful signal, thereby avoiding the production of the useful signal and the DM RS. Interference.

It should be noted that the uplink reference signal and the downlink reference signal respectively use different orthogonal resources in the first time-frequency resource, and the orthogonal resource information may be obtained from scheduling signaling or control signaling sent by the network device. It may be configured on the network device side or the UE side, which is not specifically limited in this embodiment. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, before the step 301, “the first network device sends the downlink signal in the first time-frequency resource”, the method includes: the first network device receiving the first scheduling. The first scheduling signaling is used to indicate that the first network device sends a signal in the first time-frequency resource.

Or the first UE receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE sends an uplink signal in the first time-frequency resource.

The first scheduling signaling is sent by the network device with the communication decision capability, so that when any UE or the network device receives the first scheduling signaling, the signal is sent according to the first scheduling signaling. In the embodiment of the present invention, the relationship between the network device that sends the first scheduling signaling to the first UE or the first network device and the first network device is not limited, and may be the first network device itself or the second network device. Or another third network device, the network device that sends the first scheduling signaling has a decision capability, and can schedule communication of each device in the communication system.

The present invention causes the network device to send the first scheduling signaling to the first UE or the first network device to indicate the first UE or the first, because the present invention is different from the prior art, including different subcarrier mapping modes and different RE mapping modes. The network device sends a signal according to the subcarrier mapping mode and the RE mapping mode of the present invention, which brings better flexibility. When the traffic is large, the first scheduling signaling is sent to the first UE or the first network device to instruct the first UE or the first network device to send a signal, thereby improving transmission efficiency and meeting the requirement of a large amount of traffic; When the traffic is small, the second scheduling signaling may be sent to the first UE to stop using the method of the present invention, that is, the same time-frequency resource is used to transmit the communication of the uplink signal and the downlink signal, thereby reducing the communication complexity. Specifically, when the first network device and the second network device receive the first scheduling signaling, the first scheduling signaling is used to indicate that the first network device sends a signal on the first time-frequency resource. The first scheduling signaling is further configured to instruct the second network device to receive the signal on the first time-frequency resource. The first network device and the second network device receive or transmit signals according to the first scheduling signaling. For example, the first network device sends the downlink signal to the second UE according to the first scheduling signaling, and the second network device receives the uplink signal sent by the first UE according to the first scheduling signaling.

Alternatively, the first scheduling signaling may be further used to indicate that the first UE and the second UE receive or send a signal on the first time-frequency resource. When the first UE and the second UE receive the first scheduling signaling, the first UE and the second UE receive or transmit a signal according to the first scheduling signaling. For example, the first UE sends an uplink signal according to the first scheduling signaling, and the second UE receives the downlink signal according to the first scheduling signaling; or, the first UE sends a signal according to the first scheduling signaling, and the second UE according to the first scheduling Signaling receives signals. The two signals may be different. For example, the first UE sends an uplink signal to the first network device according to the first scheduling signaling, and the second UE receives the downlink signal from the second network device according to the first scheduling signaling, and uplink. The signal and the downlink signal are sent by different devices; or, the two signals may be the same, that is, the first UE sends a signal to the second UE according to the first scheduling signaling, and the latter receives the signal according to the first scheduling signaling. signal. FIG. 6 is a schematic diagram of a communication system according to an embodiment of the present invention. Referring to FIG. 6a, the communication system includes a third network device, a first UE, and a second UE, and includes the following steps:

6101: The third network device sends the first scheduling signaling.

The first scheduling signaling is different from the scheduling signaling of the prior art, and can be used not only for scheduling the first UE to send signals, but also for scheduling the second UE to receive signals.

6102: The first UE and the second UE receive the first scheduling signaling.

6103: The first UE sends a signal according to the first scheduling signaling.

6104: The second UE receives the signal according to the first scheduling signaling.

Through the above steps, the third network device instructs the first UE to send a signal to the second UE by using one scheduling signaling, thereby implementing the device to device with a lower scheduling signaling overhead (Device To Device , D2D) transmission. FIG. 6b is a schematic diagram of a communication system according to an embodiment of the present invention. Referring to FIG. 6b, the communication system includes a first network device, a second network device, a third network device, a first UE, and a second UE. FIG. 6c is a flowchart of a communication system according to an embodiment of the present invention. Referring to FIG. 6c, the network device with communication decision-making capability is used as a third network device as an example. Other network devices (first network) Embodiments of the device or the second network device or other network device having communication decision-making capabilities are similar, and are not described herein again.

6201: The third network device sends the first scheduling signaling.

The first scheduling signaling is different from the scheduling signaling in the prior art, and can be used not only to schedule the first UE to send an uplink signal, but also to schedule the second UE to receive the downlink signal. At this time, the third network device and the first And connecting, by the second network device, a wired manner, directly controlling the first network device to receive the uplink signal, and controlling the second network device to send the downlink signal. Optionally, the third network device does not have a wired connection with the first and second network devices, so the first scheduling signaling may also be used to schedule the first network device to receive the uplink signal, and may also be used to schedule the second The network device sends a downlink signal. The scheduling and signaling are simultaneously scheduled and transmitted, and the overhead of scheduling signaling is reduced. This document focuses on the case where there is no wired connection between the third network device and the first and second network devices. It can be understood that if the third network device and the first and second network devices are wired, The connection does not require the operations of the first and second network devices to receive the first scheduling signaling.

6202: The first UE, the second UE, the first network device, and the second network device receive the first scheduling signaling.

6203: The first UE sends an uplink signal to the second network device according to the first scheduling signaling. 6204: The first network device sends a downlink signal to the second UE according to the first scheduling signaling.

The first UE and the second UE perform signal reception or transmission according to the first scheduling signaling, which reduces signaling overhead. The first network device and the second network device receive the first scheduling signaling by using a wireless manner, and receive or send the signal according to the first scheduling signaling, thereby avoiding a line connection between the network devices. The resource consumption brought.

It should be noted that the scheduling according to the embodiment of the present invention may be a scheduling performed on both the sending and receiving of the same device. For example, the first UE receives the first scheduling signaling and sends an uplink signal according to the first scheduling signaling. And receiving the downlink signal according to the first scheduling signaling, which also reduces signaling overhead. When the uplink signal sent by the first UE and the received downlink signal use the same time-frequency resource, full-duplex transmission is performed corresponding to the first UE, thereby reducing the signaling overhead of the full-duplex scheduling transmission. Optionally, the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the information included in the first scheduling signaling, where the first scheduling signaling is further used to indicate the second The UE or the second network device receives the signal according to the information included in the first scheduling signaling.

Here, "first" and "second" are only used to distinguish different network devices or different UEs, and are not corresponding to the numbers in Fig. 6a or other illustrations, and the descriptions in other places are similar, and will not be described below.

In the embodiment of the present invention, the first UE, the second UE, and the first network device and the second network device may interpret the information included in the first scheduling signaling according to the configuration, and perform corresponding sending or receiving according to the interpreted information. Reduced overhead. In addition, since each device can read the scheduling signaling, the complexity of the line connection between the network devices is eliminated.

The first scheduling signaling includes a plurality of signaling fields, and one or more of the fields are selected to carry information. When the first network device receives the first scheduling signaling, performing an operation of transmitting a signal according to a field carrying information; when receiving the first scheduling signaling, the second network device receiving a signal according to a field carrying information operating. The first network device and the second network device use different signaling fields to obtain different signal processing modes, which reduces signaling overhead.

Or, when the first UE receives the first scheduling signaling, send a signal according to the information included in the first scheduling signaling; when the second UE receives the first scheduling signaling, according to the first scheduling signaling The included information receives the signal. The first UE and the second UE use different signaling fields to obtain different signal processing modes, which reduces signaling overhead.

Optionally, the first scheduling signaling simultaneously schedules multiple network devices or UEs to receive or send signals. Send, reduce the overhead of scheduling signaling.

Preferably, the time-frequency resource information is information of a PRB pair. For example, the time-frequency resource information is a PRB pair numbered 1-3. After the first network device reads the information, it sends information on the PRB pair numbered 1~3. After the second network device reads the information, it receives the information on the PRB pair numbered 1~3. After the first UE reads the information, it sends information on the PRB pair numbered 1~3. After the second UE reads the information, it receives the information on the PRB pair numbered 1~3. Optionally, based on the technical solution of the embodiment shown in FIG. 3, the first scheduling signaling further includes: a Modulation and Coding Scheme (MCS) information, a transmission layer number information, and a reference signal. Any of the orthogonal resource information. The modulation and coding scheme information is a modulation and coding scheme used by the network device or the UE when transmitting or receiving a signal. For example, when the modulation and coding scheme information is 10, the network device or the UE uses the modulation code numbered 10 when transmitting or receiving the signal. Program.

When the first scheduling signaling received by the first network device and the second network device includes modulation and coding scheme information, the first network device sends information according to the modulation and coding scheme information by using a corresponding modulation and coding scheme, and the second network device Information is received using the corresponding modulation and coding scheme according to the modulation and coding scheme information.

When the first scheduling signaling received by the first UE and the second UE includes modulation and coding scheme information, the first UE sends information according to the modulation and coding scheme information by using a corresponding modulation and coding scheme, and the second UE according to the modulation and coding scheme. The information is received using a corresponding modulation and coding scheme.

The transmission layer number information is used to indicate the number of transmission layers of the space used by the network device or the UE when transmitting or receiving a signal.

The reference signal orthogonal resource information is used to indicate an orthogonal resource used by the reference signal when the network device or the UE transmits or receives a signal, such as an orthogonal code number, a frequency band number, a time slot number, and the like. Further optionally, based on the technical solution of the embodiment shown in FIG. 3, different UEs or different networks The manners for parsing the signaling fields included in the first scheduling signaling are different in the network device or the different types of devices. The fields of the modulation and coding scheme information included in the first scheduling signaling are the same, but the corresponding coding manners of the same field in different UEs or different network devices are different, or the coding manner corresponding to the UE and the network device The first UE and the second UE can be understood as different values between the first UE and the second UE, which can be understood as being between the first UE and the first network device. Different values can also be understood as different values between the first network device and the second network device.

For example, when the modulation coding scheme signaling field includes 5 bits, the field in the scheduling signaling sent by the network device is "01100", and when the first UE and the second UE receive the same modulation and coding scheme signaling field, After the first UE receives the first scheduling signaling, after reading the first scheduling signaling, it is understood that the value corresponding to the modulation and coding scheme signaling field "01100" is 12, and the first UE uses the modulation and coding scheme numbered 12 After the second UE receives the first scheduling signaling, after reading the first scheduling signaling, it is understood that the value corresponding to the modulation and coding scheme signaling field "01100" is 8, and the second UE uses the number 8 The modulation coding scheme receives the signal. That is, the first UE and the second UE use different MCS signaling fields and MCS value mapping tables. When the first UE sends an uplink signal to the first network device, and the channel condition between the first UE and the first network device is good, it is more suitable to use the higher-order modulation and coding scheme to send the uplink signal, so that the present invention only passes one The scheduling signaling implements scheduling related to the first UE and the second UE, reduces signaling overhead, and improves transmission efficiency. Further, optionally, based on the technical solution of the embodiment shown in FIG. 3, configured to parse the transport layer number information or reference signal orthogonal resource information configured on different UEs or different network devices or different types of devices. The way of parsing is different. That is, for the same transmission layer number information or reference signal orthogonal resource information, the first UE and the second UE can be understood as different values, which can be understood as between the first UE and the first network device. Different values can also be understood as different values between the first network device and the second network device.

Further optionally, based on the technical solution of the embodiment shown in FIG. 3, different UEs or different networks The parsing methods configured on the network device or different types of devices for parsing the modulation and coding scheme are different. That is, for the same modulation and coding scheme, the first UE and the second UE can be understood as different values, which can be understood as different values between the first UE and the first network device, the first network device and The second network device can also be understood as a different value.

When the first layer received by the first UE and the second UE includes the transmission layer number information, although the fields of the transmission layer number information included in the first information are the same, the same field is in the first UE and the first The corresponding values of the two UEs are different.

For example, the transmission layer number signaling field includes 2 bits, and the field in the first scheduling signaling is “01”, after the first UE receives the first scheduling signaling, after reading the first scheduling signaling, It is understood that the value of the transmission layer number signaling field is "01", and the value corresponding to the value of "01" is 2, the first UE uses the 2 layers of the space to send the uplink signal, and after the second UE receives the first scheduling signaling, the first UE reads the first After scheduling signaling, it is understood that the transmission layer number signaling field is "01" and the corresponding value is 3-2=1. Then, the second UE uses the layer 1 of the spatial space to receive the downlink signal, that is, the uplink signal and the downlink signal. The sum of the number of layers is a fixed value of 3.

When the reference information orthogonal resource signaling field is included in the first information received by the first UE and the second UE, although the reference signal orthogonal resource signaling fields included in the first information are the same, the same field The corresponding values are different in the first UE and the second UE.

For example, the orthogonal resource signaling field includes 3 bits, and the field in the first scheduling signaling is "011", after the first UE receives the first scheduling signaling, after reading the first scheduling signaling, It is understood that the value corresponding to the orthogonal resource signaling field "011" is 3, the first UE sends the uplink DM RS by using the orthogonal resource numbered 3, and the second UE reads the first scheduling signaling, and then reads the After the first scheduling signaling, the value corresponding to the orthogonal resource signaling field "011" is 12-3=3, and the second UE uses the orthogonal resource numbered 9 to receive the downlink DM RS, that is, the uplink signal and the downlink RS. The sum of the numbers is a fixed value of 12.

It should be noted that the fixed value in the above-mentioned use may be preset on the UE side, or the network device may send the signaling including the fixed value to the UE, so that the UE obtains a fixed value after receiving the signaling. Preferably, the signaling including the fixed value is semi-static signaling, and the UE updates the fixed value only when receiving the signaling, and continues to use the old fixed value when the signaling is not received. Optionally, before receiving the first scheduling signaling, according to the technical solution of the embodiment shown in FIG. 3, the method further includes:

The third network device sends the MCS offset value information, so that the UE or the network device that receives the offset value information sends or receives a signal according to the offset value information and the first scheduling signaling.

The network device having the communication decision capability transmits the offset value information to the first UE or the second UE, and the first UE or the second UE determines the information indicated by the signaling field according to the offset value information and the first scheduling signaling. For example, the network device sends an MCS offset value of -4 to the second UE before transmitting the first scheduling signaling to the first UE and the second UE. The MCS signaling field is "01100" in the first scheduling signaling sent to the first UE and the second UE, and the first UE determines to use the MCS with the number 12 to send the uplink signal according to the scheduling signaling, and the second UE The MCS with the number 12-4=8 is determined to receive the downlink signal according to the MCS offset value information and the scheduling signaling.

The network device having the communication decision-making capability sends the offset value information to the first network device or the second network device, where the first network device or the second network device determines the signaling field according to the offset value information and the first scheduling signaling. Indicated information. The principle of the network device transmitting or receiving according to the offset value information is the same as that of the UE side, and details are not described herein again.

It should be noted that the first scheduling signaling is dynamic signaling, for example, a PDCCH signal in an LTE system, and each received first scheduling signaling can only control signal transmission in one period, and the offset value information is semi-static. After the network device sends the UE to the UE once, until the next time the signaling is sent, the UE always uses the offset value information, and the sending of the offset value information does not increase the overhead of dynamic signaling, and accordingly, from the network. The angle of the device side, because the network device always uses the offset value information after receiving the offset value information, the transmission of the offset value information does not increase the overhead of dynamic signaling. Further optionally, based on the technical solution of the embodiment shown in FIG. 3, the first scheduling signaling includes second information, where the first scheduling signaling is further used to indicate that the first UE or the first network device reads The second information, the first scheduling signaling is further used to indicate that the second UE or the second network device ignores the Two information. The second information is configuration information of an uplink signal or a downlink signal.

When the first UE and the second UE receive the first scheduling signaling that includes the second information, any one of the first UE and the second UE reads the second information in the first scheduling signaling, and acquires the first scheduling. The configuration information of the uplink signal or the downlink signal included in the signaling, and the other UE ignores the second information. Further, optionally, based on the technical solution of the embodiment shown in FIG. 3, the second information includes at least one of power control information, precoding vector, or matrix information.

The power control information, precoding vector or matrix information is used by the UE to determine a signal transmission power, a precoding vector or a matrix used when transmitting the uplink signal.

The uplink signal is sent by the UE, and the UE acquires the second information that is sent by the network device, including the network device specified power control information, the precoding vector or the matrix information, and sends the uplink signal according to the second information; and the downlink signal is sent by the network device. The network device can determine the power and precoding vector or matrix of the transmitted signal by itself, and usually does not need to send a signaling to notify the UE. In the embodiment of the present invention, the first UE reads the signaling field of the second information, and sends an uplink signal according to the signaling field of the second information, and the second UE does not read the signaling field because it is the received signal. . Further optionally, based on the technical solution of the embodiment shown in FIG. 3, the first scheduling signaling further includes third information, where the third information is used to indicate that different UEs or network devices use different values. Send or receive a signal.

Preferably, the third information may be a 2-bit signaling field. After the first UE and the second UE acquire the first scheduling signaling that includes the third information, the first UE reads the third information, and obtains the first attribute. The information, the first UE reads the third information, and obtains the information of the second attribute, where the information of the first attribute and the information of the second attribute are different. For example, the first attribute is used to trigger the UE to send a PUCCH (Physical Uplink Control Channel) signal, and the second attribute is used to trigger the UE to send an SRS (Sounding Reference Signal). Further, optionally, the method further includes: before receiving the first scheduling signaling, according to the technical solution of the embodiment shown in FIG.

The first UE or the second UE receives the specific scrambling code information sent by the network device having the communication decision capability;

The first UE or the second UE receives the first scheduling signaling using the specific scrambling code information.

In the embodiment of the present invention, the network device having the communication decision-making capability scrambles the first scheduling signaling according to the specific scrambling code information, so that the first UE or the second UE that receives the specific scrambling code information is received. The first scheduling signaling is received using the specific scrambling code information.

In the LTE system, the UE obtains the RNTI (Radio Network Temporary Identifier) information in the random access process, and after accessing the network, the network device adds the scheduling signaling of the UE according to the RNTI information. The interference may be the scrambling of the signaling bits or the scrambling of the CRC (Cyclic Redundancy Code) bits. The scrambling operation can enhance the security of the scheduling signaling bits and the RNTI information of different UEs. Usually different, thus avoiding the UE's erroneous reception of scheduling signaling of other UEs. The technology is well known to those skilled in the art, and will not be described in detail in the embodiments of the present invention.

In the embodiment of the present invention, if the UE uses the RNTI information obtained in the random access procedure to obtain the scheduling signaling, the different UEs still correspond to different RNTIs, so that the network device uses any one RNTI to scramble the scheduling signaling. Another UE acquires scheduling signaling. In the embodiment of the present invention, after the first UE or the second UE accesses the network, the third network device (the network device with the communication decision capability) sends the specific scrambling code information, and the first UE or the second UE receives the specific interference. Code information. After the third network device scrambles the first scheduling signaling according to the specific scrambling code information, the first scheduling signaling is sent, and the first UE or the second UE may receive the first scheduling signaling according to the specific scrambling code information. Further optionally, based on the technical solution of the embodiment shown in FIG. 3, the first scheduling signaling is used to indicate that the UE or the network device that receives the first scheduling signaling sent in the first transmission time interval is configured according to the The first scheduling signaling sends or receives a signal at a second transmission time interval, and the second transmission time The duration between the interval and the first transmission time interval is an integer multiple transmission time interval.

In the prior art, if the network device sends the scheduling signaling to the UE to transmit the uplink signal in the transmission time interval TTI of the number n, the UE is triggered to send the uplink useful signal in the frame number n+4, and the four TTIs are used. The length of time is the time reserved for the UE for processing data according to an indication of scheduling signaling. For the downlink transmission, if the network device sends the scheduling signaling to the UE to receive the downlink useful signal in the frame numbered n, the downlink useful signal is sent to the UE in the TTI (the network device can send the scheduling signaling in advance). The data is ready), so the time difference between the uplink and downlink scheduling signaling scheduling UE to transmit the useful signal is different.

In the embodiment of the present invention, the first UE and the second UE both receive the first scheduling signaling to send the uplink signal or receive the downlink signal, and the first UE and the second UE are used to make the uplink signal or the downlink signal received at the same time. The time difference between the sending and receiving signals is the same, that is, if the network device sends the scheduling signaling in the TTI with the number n, the first UE receives the uplink signal after the TTI is numbered n+n1, and the second UE receives the uplink signal. The downlink signal is received at the TTI numbered n+nl. By designing the same time difference, the first scheduling signaling can instruct the first UE and the second UE to use the same resources (simultaneous frequency) to transmit or receive signals. Further, optionally, based on the technical solution of the embodiment shown in FIG. 3, the transmission time interval of the scheduling signaling transmitted between the second transmission time and the transmission time interval of the uplink transmission are used.

If the first UE receives the scheduling signaling for scheduling the uplink transmission in the TTI numbered n, the uplink signal is sent in the TTI numbered n+n1, and the second transmission time interval and the first transmission time interval are The value of the duration is nl. In the existing LTE system, nl is 4. In the embodiment of the present invention, preferably, n1 is 4. In this way, the uplink signal processing flow of the first UE can be reused, thereby reducing the complexity brought by the system upgrade. Further, optionally, based on the technical solution of the embodiment shown in FIG. 3, the first UE or the second UE If the first scheduling signaling is received and the second scheduling signaling is only used to schedule uplink or downlink transmission,

When the UE transmits or receives a signal at the same transmission time interval, the first scheduling signaling is ignored.

The second scheduling signaling refers to a scheduling signal used in the prior art to schedule only one unidirectional transmission. The first scheduling signaling is used to instruct the first UE to send an uplink signal, and the second UE is instructed to receive the downlink signal, so that the scheduling signaling utilization is improved, and the traditional scheduling signaling is used only to instruct the UE to perform the sending operation or the receiving. operating. When the first UE or the second UE receives both the first scheduling signaling of the present invention and the traditional second scheduling signaling, and the first scheduling signaling and the second scheduling signaling all indicate that the UE is in the same transmission time. When the signal is sent or received at intervals, the signal is sent or received according to the indication of the second scheduling signaling, and the indication of the first scheduling signaling is ignored, so that the network device can adaptively adjust the first according to the network load and the like. The scheduling information that has been indicated by the scheduling signaling also avoids the confusion problem that may occur in a scenario where multiple network devices have the capability of transmitting scheduling signaling to the UE. For example, the third network device has the capability of sending the first scheduling signaling to the UE, and the first network device has the capability of sending the second scheduling signaling to the UE, and if the two network devices send the scheduling signaling to the UE, The UE only needs to send or receive according to one of them. Optionally, the downlink reference signal, the first resource unit and the second resource are sent in a first resource unit that is included in the first time-frequency resource, on the basis of the technical solution of the embodiment shown in FIG. The resource unit is different, and the second resource unit is a resource unit used by the first UE to send an uplink reference signal, where the first time-frequency resource is included. The first resource unit is different from the second resource unit.

Or the first UE sends the downlink reference signal in the first resource unit of the first time-frequency resource, where the first resource unit is different from the second resource unit, and the second resource unit is The first UE is configured to send a resource unit used by an uplink reference signal. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the first network device does not send a signal on the second resource unit, or the first UE is on the first resource unit. Do not send a signal. Figure 7a is a schematic diagram of a signal transmitted by a first UE according to an embodiment of the present invention, and Figure 7b is a schematic diagram of a signal transmitted by a first network device according to an embodiment of the present invention, with reference to Figure 7a and Figure 7b, Among the signals transmitted by the UE, the resource unit that does not transmit any signal transmits the resource unit corresponding to the DM RS to the first network device. And in the signal sent by the first network device, the resource unit that does not send any signal sends the resource unit corresponding to the DM RS to the first UE. By not transmitting a useful signal on the RE corresponding to the DM RS, adding a new DM RS and a useful signal to the RE based on the RE corresponding to the DM RS and the useful signal, and based on the mapping method included in the prior art The mapping mode is much simpler. It can be compatible with existing systems such as LTE systems by not transmitting useful signals on REs corresponding to DM RSs, that is, existing UEs or network devices do not need to change REs corresponding to DM RSs and useful signals. Reduced system complexity. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the first network device sends zero-power resource unit information to the first UE, so that the first UE is in the zero-power resource unit. No signal is sent on the resource unit indicated by the information.

Or the first network device sends zero power resource unit information to the second UE, so that the second UE does not receive a signal on the resource unit indicated by the zero power resource unit information.

Optionally, the first UE receives zero power resource unit information, and the first UE does not send a signal on the resource unit indicated by the zero power resource unit information.

In the LTE system, the first UE does not necessarily know that the first network device sends the RE corresponding to the DM RS. Therefore, the first network device needs to send zero-power RE information to the first UE, indicating that the first UE is in the zero-power RE information. No corresponding signal is sent on the corresponding RE, and these REs correspond to the RE corresponding to the first network device to send the RS, so that the signal sent by the first UE does not interfere with the RS sent by the first network device.

After receiving the zero-power resource unit information, the second UE does not receive the signal on the resource unit corresponding to the zero-power resource unit information, and avoids signal pairs sent by other network devices or other UEs on the resource units in a certain period of time. The signal received by the second UE in the same period of time causes interference, for example For example, the other UE sends the CSI-RS on the first resource unit in the first PRB pair, so that the second UE measures the CSI-RS to obtain the CSI between the other UE and the second UE, and the second UE is The scheduling receives the PDSCH on the first PRB pair, and receives the zero-power resource unit information to indicate that the second UE does not receive the signal on the first resource unit, and the second UE is included in the first PRB pair except the first resource. The PDSCH is received on other resource units except the unit, so that the CSI-RS sent by the other UE does not interfere with the second UE receiving the PDSCH.

The zero power RE information is a plurality of bits of data information. The zero power RE information may be pattern information of the downlink DM RS, and the first UE does not transmit any signal on the RE corresponding to the downlink DM RS pattern according to the zero power RE information. The pattern information may be an index. For example, the first network device and the first UE pre-set the correspondence between the respective indexes and the pattern of the downlink DM RS, so that the first UE can learn the RE that does not send any signal according to the index. The zero-power RE information may include the antenna port information indicating the downlink DM RS. For example, the RE that does not send any signal in FIG. 7a corresponds to the downlink DM RS pattern of the 2 antenna port, and FIG. 7c is a first type provided in the embodiment of the present invention. Schematic diagram of the signal sent by the UE, see FIG. 7c, the RE of the first UE not transmitting any signal corresponds to the downlink DM RS pattern of the 4 antenna port, and the network device sends the information to the UE, and the UE can determine which REs according to the number of antenna ports. No signal is sent on. In general, the more the number of antenna ports, the more REs are needed to transmit the DM RS. With the present invention, the number of antenna ports for transmitting the DM RS by the first network device may not be limited, and the first network device may send the downlink signal through two or four antenna ports, and then the first UE determines according to FIG. 7a or FIG. 7c. Which REs send signals. The zero power RE information can be transmitted by scheduling signaling such as the first scheduling signaling. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the first network device sends zero-power resource unit information to the first UE, so that the first UE is in the zero-power resource unit. The reference signal is not transmitted on the resource unit indicated by the information.

The first network device sends the zero-power resource unit information to the first UE, and after receiving the zero-power resource unit information, the first UE does not send the parameter on the resource unit corresponding to the zero-power resource unit information. The test signal prevents the first network device and the reference signal sent by the first UE from interfering with each other. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the zero-power resource unit information includes: a reference signal transmission period and time offset information.

The network device periodically transmits the CSI-RS, and the period may be configured by the network device sending signaling to the first UE, where the signaling includes reference signal transmission period and time offset information. For example, if the network device sends a signaling indication period to the UE and the time offset is 2, the UE measures the CSI-RS at the numbers 2, 7, 12, .... After receiving the zero-power RE information, the first UE does not send any information on the RE corresponding to the downlink CSI-RS if the first scheduling signaling indicates that some TTIs in the TTIs transmit the same-frequency signals. The uplink signal is sent only on other REs. Zero power RE information can be sent by semi-static signaling.

Optionally, on the basis of the technical solution of the embodiment shown in FIG. 3, the signaling sent and received by the first network device and the first UE is ue-specific signaling.

The signaling in the prior art includes: cell-specific signaling and ue-specific signaling. In the embodiment of the present invention, ue-specific signaling is adopted, and the UE-specific signaling can perform simultaneous reception or transmission of the same-frequency signal only to some UEs in the cell, which has high flexibility. Sex. Optionally, based on the technical solution of the embodiment shown in FIG. 3, the uplink signal includes an uplink reference signal for detection, and the downlink signal includes a downlink demodulation reference signal and a useful signal, or the downlink The signal includes a downlink reference signal for detection, and the uplink signal includes an uplink demodulation reference signal and a useful signal.

The second network device jointly receives the uplink signal sent by the first UE and the downlink RS sent by the first network device for detecting, and demodulates the uplink signal, and the DM RS included in the uplink signal sent by the first UE is used for detecting The downlink RS is orthogonal, so that the downlink RS for sounding can be directly subjected to channel estimation without acquiring complex joint reception processing, and the channel condition between the first network device and the second network device is obtained, and the present invention is implemented. The examples are not specifically limited. Sent by the first network device The downlink RS can be used for other UEs to acquire downlink channel conditions, and can also be used for the UE to measure downlink channel conditions. Optionally, based on the technical solution of the embodiment shown in FIG. 3, the first network device receives type indication information sent by any UE, and learns, according to the type indication information, whether the any UE can be in the office. Transmitting a signal in the first time-frequency resource. The first network device may learn, according to the type indication information of the UE, whether the UE supports sending a signal in the first time-frequency resource, to confirm whether the UE needs to interact with the UE according to the transmission method provided by the embodiment of the present invention. Further, the type indication information includes the interference deletion capability identification information of the any UE or the system version information supported by any one of the UEs, where the interference deletion capability identification information is used to indicate any one of the UEs. Whether it has the ability to interfere with deletion.

The interference deletion processing process includes: demodulating the interference signal; regenerating the interference signal according to the demodulation result, and deleting the interference signal in the received composite signal to obtain the useful signal after the interference is reduced; The signal is demodulated. By demodulating the interference signal and then deleting the interference, the to-be-received signal with less interference is obtained, and then the to-be-received signal with less interference is demodulated to obtain the signal to be received. The demodulation performance of the signal to be received can be optimized by interference cancellation.

For example, because the UE may not have the interference cancellation capability, the network side device needs to determine whether the UE has the interference cancellation capability before sending the first scheduling signaling to the UE, and the UE may report whether the UE has interference cancellation. The capability of the interference deletion capability identification information is determined according to the reported system information supported by the UE, and the identifier information may be version information of the system. For example, when the system supported by the UE is only the LTE R12, it is determined that the UE does not have the capability of performing the interference deletion operation on the uplink and downlink signals. When the operating system of the UE supports the LTE R13, it is determined that the UE has the uplink and downlink. The ability of the signal to perform an interference cancellation operation allows the present invention to be used to avoid interference and improve transmission efficiency. Optionally, based on the technical solution of the embodiment shown in FIG. 3, the method further includes: the first network device sends a cell broadcast message, where the cell broadcast message is used to notify the first network device The other network device or the UE in the cell sends an uplink signal in the first time-frequency resource.

When the other network devices in the cell where the first network device is located and the UE receive the broadcast message of the cell, it is learned that the first network device supports receiving the uplink signal on the first time-frequency resource, and the other network device and the UE may An uplink signal is sent on the first time-frequency resource.

Optionally, as another embodiment, the method of the present invention may further include: the first network device sending mode configuration information to the user equipment, so that the user equipment uses the method of the present invention according to the mode configuration information. FIG. 8 is a flowchart of a wireless transmission method according to an embodiment of the present invention. See Figure 8. The method includes:

8001: The second network device receives a downlink signal that is sent by the first network device in the first time-frequency resource.

8002: The second network device receives an uplink signal sent by the first UE in the first time-frequency resource.

8003: The second network device acquires a useful signal sent by the first UE or sent by the first network device according to the downlink signal and the uplink signal.

The joint reception refers to the joint processing of the signals after the received signal and the interference signal are mixed together, and the interference signal is processed according to the prior information of the interference signal to eliminate the interference of the interference signal on the useful signal. The reception performance of the network device or UE to receive signals can be enhanced by joint reception.

The second network device may jointly receive the downlink signal sent by the first network device on the first time-frequency resource and the first UE sends the first time-frequency resource by using a MIMO (Multiple Input Multiple Output) receiving algorithm. Uplink signal, or MU-MIMO (Multi-User Multiple Input Multiple Output) receiving algorithm to jointly receive the first network The downlink signal sent by the network device on the first time-frequency resource and the uplink signal sent by the first UE on the first time-frequency resource. These algorithms are known to those skilled in the art, and are not described in detail in the embodiments of the present invention. The specific algorithm used for the joint reception is not specifically limited in the embodiment of the present invention.

In Figure 9a, the communication system includes a first network device, a second network device, a first UE, and a second UE. The first network device sends a downlink signal to the second UE on the first time-frequency resource, where the first UE sends an uplink signal to the second network device on the first time-frequency resource, and the second network device receives the uplink signal. The uplink signal sent by the UE is a useful signal, and the received downlink signal sent by the first network device is an interference signal. Therefore, the second network device needs to acquire the first UE from the received signal by means of joint reception. Upstream signal.

It should be noted that, for example, the second network device receives the uplink signal sent by the first UE, and the first network device sends the downlink signal to the second UE, where the signals are simultaneously transmitted in the same frequency, and therefore, the uplink sent by the first UE The signal may cause interference to the second UE to receive the downlink signal. Therefore, in the present invention, the second UE also acquires the downlink signal sent by the first network device by joint reception. Specifically, the second UE performs joint reception on the downlink signal sent by the first network device in the first time-frequency resource and the uplink signal sent by the first UE in the first time-frequency resource, and acquires The useful signal sent by the first network device is the same as the joint reception of the signal by the second network device, and details are not described herein again. Of course, the second UE may be the first UE, and correspondingly, the first UE performs the downlink signal sent by the first network device in the first time-frequency resource and the uplink signal sent by the second UE. The joint receiving acquires a useful signal sent by the first network device. Optionally, the downlink reference signal is sent in a first resource unit that is included in the first time-frequency resource, where the first resource unit is different from the second resource unit, and the second resource unit is the The resource unit used by the first UE for transmitting the uplink reference signal included in the first time frequency resource.

FIG. 9b is a schematic diagram of a signal received by a second network device or a second UE according to an embodiment of the present invention. Referring to FIG. 9b, the signal includes a first DM RS and a first useful signal sent by the first UE, and a first a second DM RS and a second useful signal sent by the network device, where the useful signal corresponds The REs corresponding to any of the DM RSs do not overlap, and the first useful signal and the second useful signal may overlap partially or completely. When the device that receives the signal is the second UE, the second UE may estimate, according to the first DM RS and the second DM RS, the channel experienced by the uplink signal and the channel experienced by the downlink signal, and then the first useful signal and The second useful signal is jointly received, and the downlink signal can be recovered. In this process, the uplink DM RS and the downlink DM RS correspond to different REs, so that interference between the DM RSs can be avoided, and the signal mapping manner in the prior art is not changed, that is, the first UE and the first network device are both The existing LTE mapping mode is used to send the DM RS. The only change is that the first UE does not send any signal for the RE that needs to send the downlink DM RS. For the RE that needs to send the uplink DM RS, the first network device does not send any signal. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 8, step 8003: the second network device acquires the first UE transmission or the first network device according to the downlink signal and the uplink signal. Useful signals sent" include:

Preferably, the joint reception is interference cancellation. The interference deletion method may be any one of the following: (1) IC (Interference Cancellation) based on the modulation mode information of the interference source. (2) IC based on MCS (Modulation and Coding Scheme) information of interference source.

FIG. 9c is a schematic diagram of interference cancellation of interference source-based modulation mode information according to an embodiment of the present invention. Referring to FIG. 9c, the second UE may first demodulate the first UE according to the modulation mode information used by the first UE. And modulating the signal, and multiplying the estimated channel by the demodulated modulated signal to obtain interference caused by the signal transmitted by the first UE, and causing interference on the acquired signal sent by the first UE in the received composite signal The signal sent by the first network device can be obtained by deleting. Correct In an OFDM system, when the device performing joint reception is the second UE, the second UE performs DFT processing on the received signal to obtain a signal on the corresponding PRB pair, that is, R = M a χ H a + M_b χ H_b+ n, where H_a and H-b represent the frequency domain channel fading experienced by M-a and M-b, respectively, and n represents noise. Then, according to the signal format, the DM RS and the data are separated, and H_a~ (~ indicates an estimated value) is estimated according to the DM RS, and then M_a~ is demodulated according to the modulation method used by the first UE to transmit the useful signal, and finally the weight is Constructing the interference M_a~ χ H_a~ caused by the signal sent by the first UE, and subtracting the interference from R, the signal transmitted by the first network device with reduced interference can be obtained (if the channel and the signal are estimated correctly, The result of the subtraction is M_b χ Η - b+n, which reduces the interference experienced by M-b). By demodulating the signal, the signal M_b~ sent by the first network device to the second UE can be demodulated with higher accuracy, and finally the data bits are obtained after channel decoding.

FIG. 9 is a schematic diagram of interference cancellation based on MCS information of an interference source according to an embodiment of the present invention. Referring to FIG. 9 d , if a device that performs joint reception is a second UE, the second UE generates a useful signal according to the first UE. The used MCS demodulates and decodes the signal sent by the first UE, and finally reconstructs the interference and then deletes the interference, thereby reducing the interference received by the signal transmitted by the first network device. Since the system usually uses a high-reliability coding method, such as Turbo coding, if the second UE decodes the signal transmitted by the first UE and reconstructs the interference, the interference caused by the signal transmitted by the first network device can be more accurately estimated. Therefore, it is more advantageous for the second UE to decode the useful signal sent by the first network device, and the performance is better than the IC based on the modulation mode information. In the prior art, if the channel coding is Turbo coding, the process is also called Turbo-SIC. Optionally, on the basis of the technical solution of the embodiment shown in FIG. 8, step 8003: the second network device acquires the first UE transmission or the first network device according to the downlink signal and the uplink signal. The transmitted useful signal "before, includes: receiving processing information for the interference signal.

The processing information of the interference signal refers to information required for deleting the interference signal during the joint receiving process, and the processing information of the interference signal may be a modulation mode or MCS information of the interference source. In this regard, the embodiment of the present invention is not specifically limited. The second network device receives the processing information of the interference signal, so as to determine a specific manner of joint reception according to the processing information of the interference signal, and process the received composite signal according to the joint receiving mode and the processing information of the interference signal to obtain useful information. signal.

Optionally, the second UE jointly receives the downlink signal sent by the first network device in the first time-frequency resource and the uplink signal of the first _UE , and obtains the useful information sent by the first network device. Before the signal, the method further includes: receiving, by the second UE, processing information about the interference signal, so as to determine a specific manner of joint reception according to the processing information of the interference signal, and receiving the received information according to the joint receiving manner and the processing information of the interference signal. The composite signal is processed to obtain a useful signal. Optionally, on the basis of the embodiment shown in FIG. 8 , before the “the second network device receives the uplink signal sent by the first UE in the first time-frequency resource”, the method further includes: The second network device receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the second network device receives the signal in the first time-frequency resource.

The second network device receives a cell broadcast message, where the cell broadcast message is used to notify the second network device to send a downlink signal and/or receive an uplink signal in the first time-frequency resource.

The signaling sent and received by the second network device is UE-specific signaling.

The specific principles of the first scheduling signaling, the cell broadcast message, and the signaling are the same as those in the foregoing embodiment of the first network device, and are not described herein again. FIG. 10 is a flowchart of a wireless transmission method according to an embodiment of the present invention. Referring to Figure 3, this embodiment includes:

1001: The third network device sends a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to information included in the first scheduling signaling, where the first The scheduling signaling is further configured to instruct the second UE or the second network device to receive a signal according to the information included in the first scheduling signaling.

The first scheduling signaling described in this embodiment is the first involved in the foregoing embodiment shown in FIG. The scheduling signaling is similar, and will not be described here. FIG. 11 is a schematic structural diagram of a first network device according to an embodiment of the present invention. Referring to FIG. 11 , the first network device includes: a transmitter 1101, a receiver 1102, and a processor 1103. The transmitter 1101 and the receiver 1102 are respectively coupled to the processor 1103.

The transmitter 1101 is configured to send a downlink signal in a first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first UE sends an uplink signal, and a first time-frequency in which the downlink signal is carried. The subcarrier included in the resource and the subcarrier included in the first time-frequency resource carrying the uplink signal correspond to the same frequency;

Optionally, the transmitter 1101 is configured to send subcarrier mapping mode indication information, where the subcarrier mapping mode indication information is used to indicate a subcarrier mapping manner used by the first UE to send or receive a signal.

Optionally, the downlink signal and the uplink signal both include a useful signal, and the resource unit corresponding to the reference signal included in any one of the uplink signal and the downlink signal corresponds to the useful signal in the other signal. Resource units do not overlap.

Optionally, the downlink signal includes a downlink reference signal, where the uplink signal includes an uplink reference signal, and the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource.

Optionally, the using the different orthogonal resources on the first time-frequency resource by using the uplink reference signal and the downlink reference signal respectively: the uplink reference signal and the downlink reference signal respectively use different frequencies in the first time-frequency resource Orthogonal resources; and / or,

Optionally, the downlink reference signal is sent in the first resource unit that is included in the first time-frequency resource, where the first resource unit is different from the second resource unit, and the second resource unit is the first time The resource unit used by the frequency resource to transmit the uplink reference signal.

Optionally, the transmitter 1101 does not transmit a signal on the second resource unit.

Optionally, the transmitter 1101 is further configured to send zero power resource unit information to the first UE, so that the first UE does not send a signal on the resource unit indicated by the zero power resource unit information.

Optionally, the transmitter 1101 is further configured to send zero power resource unit information to the second UE, so that the second UE does not receive a signal on the resource unit indicated by the zero power resource unit information.

Optionally, the zero power resource unit information includes: a reference signal transmission period and a time offset information.

Optionally, the uplink signal includes an uplink reference signal for detecting, the downlink signal includes a downlink demodulation reference signal and a useful signal, or the downlink signal includes a downlink reference signal for detection, and the uplink signal includes an uplink. Demodulate the reference signal and the useful signal.

Optionally, the receiver 1102 is further configured to receive the first scheduling signaling, where the first scheduling signaling is used to instruct the first network device to send a signal on the first time-frequency resource.

Optionally, the signaling sent and received by the first network device and the first UE is UE-specific signaling.

Optionally, the receiver 1102 is further configured to receive type indication information sent by any UE, and learn, according to the type indication information, whether the any UE can send a signal in the first time-frequency resource.

Optionally, the type indication information includes the interference deletion capability identifier information of the any UE or the system version information supported by any one of the UEs, where the interference deletion capability identifier information is used to indicate whether the any UE is Has the ability to remove interference.

Optionally, the first network device further includes: the first network device sends a cell broadcast message, The cell broadcast message is used to notify other network devices or UEs in the cell where the first network device is located to send an uplink signal in the first time-frequency resource. FIG. 12 is a schematic structural diagram of a second network device according to an embodiment of the present invention. Referring to FIG. 12, the method includes: a transmitter 1201, a receiver 1202, and a processor 1203. The transmitter 1201 and the receiver 1202 are coupled to the processor 1203, respectively.

The receiver 1202 is configured to receive a downlink signal that is sent by the first network device in the first time-frequency resource;

The receiver 1202 is further configured to receive an uplink signal sent by the first UE in the first time-frequency resource;

The processor 1203 is configured to acquire, according to the downlink signal and the uplink signal, a useful signal sent by the first UE or sent by the first network device.

Optionally, the receiver 1202 is configured to receive a downlink signal sent by the first network device in the first time-frequency resource and an uplink signal of the first UE;

The processor 1203 is configured to perform interference cancellation on the downlink signal sent by the first network device in the first time-frequency resource and the interference signal in the uplink signal of the first UE, to acquire the first UE. Or the first network device sends a useful signal sent.

Optionally, the receiver 1202 is further configured to receive processing information about the interference signal.

Optionally, the receiver 1202 is further configured to receive the first scheduling signaling, where the first scheduling signaling is used to indicate that the second network device receives the signal in the first time-frequency resource.

Optionally, the receiver 1202 is further configured to receive a cell broadcast message, where the cell broadcast message is used to notify the second network device to send a downlink signal and/or receive an uplink signal in the first time-frequency resource.

Optionally, the signaling sent and received by the second network device is UE-specific signaling. FIG. 13 is a schematic structural diagram of a first user equipment according to an embodiment of the present invention. The first use The device includes: a transmitter 1301, a receiver 1302, and a processor 1303. The transmitter 1301 and the receiver 1302 are coupled to the processor 1303, respectively.

The transmitter 1301 is configured to send an uplink signal in a first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first network device sends a downlink signal, and a first time-frequency in which the downlink signal is carried. The subcarrier included in the resource and the subcarrier carrying the uplink signal correspond to the same frequency;

Optionally, the downlink signal and the uplink signal both include a useful signal, and the resource unit corresponding to any one of the uplink signal and the downlink signal does not overlap with the resource unit corresponding to the useful signal in another signal. .

Optionally, the receiver 1302 is configured to receive subcarrier mapping mode indication information, where the subcarrier mapping mode indication information is used to indicate a subcarrier mapping mode used by the first UE to send or receive a signal.

Optionally, the downlink signal includes a downlink reference signal, and the uplink signal includes an uplink reference signal; and the uplink reference signal and the downlink reference signal respectively use different positive resources, sources on the first time-frequency resource.

Optionally, the transmitter 1301 is configured to send a downlink reference signal in a first resource unit of the first time-frequency resource, where the first resource unit is different from the second resource unit, and the second resource is Single The element is a resource unit used by the first UE to send an uplink reference signal.

Optionally, the transmitter 1301 is further configured to not send a signal on the first resource unit.

Optionally, the receiver 1302 is configured to receive zero power resource unit information, where the first UE does not send a signal on the resource unit indicated by the zero power resource unit information.

Optionally, the receiver 1302 receives zero power resource unit information, and the first UE does not receive a signal on the resource unit indicated by the zero power resource unit information.

Optionally, the receiver 1302 is further configured to receive the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE sends a signal on the first time-frequency resource.

Optionally, the receiver 1302 is configured to send the type indication information to the first network device, and learn, according to the type indication information, whether the first UE sends a signal in the first time-frequency resource.

Optionally, the type indication information includes the interference deletion capability identifier information of the first UE or the system version information supported by the first UE, where the interference deletion capability identifier information is used to indicate whether the first UE is Has the ability to remove interference.

Optionally, the receiver 1302 is configured to receive a cell broadcast message of a cell where the first UE is located, where the cell broadcast message carries a receiving or sending manner supported by a cell where the first UE is located, according to the cell broadcast message. Obtaining whether the cell where the first UE is located supports the sending manner of the first UE itself.

Optionally, the processor 1303 is configured to ignore the first scheduling signaling if the first scheduling signaling is received in the same transmission time interval and the second scheduling signaling is only used to schedule uplink or downlink transmission. FIG. 14 is a schematic structural diagram of a second user equipment according to an embodiment of the present invention. Referring to FIG. 14, the second user equipment includes: a transmitter 1401, a receiver 1402, and a processor 1403. The transmitter 1401 and the receiver 1402 are coupled to the processor 1403, respectively.

The receiver 1402 is configured to receive a downlink signal sent by the second network device in the first time-frequency resource;

The receiver 1402 is further configured to receive an uplink signal sent by the first UE in the first time-frequency resource;

The processor 1403 is configured to acquire, according to the downlink signal and the uplink signal, a useful signal sent by the first UE or the second network device.

Optionally, the receiver 1402 is configured to receive a downlink signal sent by the second network device in the first time-frequency resource and an uplink signal of the first UE;

The processor 1403 is configured to perform interference cancellation on the downlink signal sent by the second network device in the first time-frequency resource and the interference signal in the uplink signal of the first UE, to obtain the second network. A useful signal sent by the device.

Optionally, the receiver 1402 is further configured to receive processing information about the interference signal.

Optionally, the receiver 1402 is further configured to receive the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE receives a signal in the first time-frequency resource.

Optionally, the transmitter 1401 is further configured to send the type indication information to the first network device, and learn, according to the type indication information, whether the second UE sends a signal in the first time-frequency resource.

Optionally, the type indication information includes the interference deletion capability identifier information of the second UE or the system version information supported by the second UE, where the interference deletion capability identifier information is used to indicate whether the second UE is Has the ability to remove interference.

Optionally, the receiver 1402 is further configured to receive a cell broadcast message of a cell where the second UE is located, where the cell broadcast message carries a receiving or sending manner supported by a cell where the second UE is located, according to the cell broadcast. The message learns whether the cell where the second UE is located supports the sending manner of the second UE itself.

Optionally, the processor 1403 is further configured to: receive the first scheduling signal if the same transmission time interval is received. The second scheduling signaling is ordered or used only for scheduling uplink or downlink transmission, and the first scheduling signaling is ignored. FIG. 15 is a schematic structural diagram of a third user equipment according to an embodiment of the present invention. Referring to FIG. 15, the method includes: a transmitter 1501, a receiver 1502, and a processor 1503. The transmitter 1501 and the receiver 1502 are respectively coupled to the processor 1503.

The transmitter 1501 is configured to send a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to information included in the first scheduling signaling, where The scheduling signaling is further configured to instruct the second UE or the second network device to receive the signal according to the information included in the first scheduling signaling.

Optionally, the first scheduling signaling includes time-frequency resource information, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the time-frequency resource information, where the first scheduling The signaling is further used to indicate that the second UE or the second network device receives the signal according to the time-frequency resource information.

Optionally, the first scheduling signaling further includes: any one of modulation coding scheme information, transmission layer number information, and reference signal orthogonal resource information.

Optionally, different UEs or different network devices or different types of devices have different parsing manners for the signaling fields included in the first scheduling signaling.

Optionally, the parsing manners configured on different UEs or different network devices or different types of devices for parsing the transport layer number information or the reference signal orthogonal resource information are different.

Optionally, the parsing manners configured on different UEs or different network devices or different types of devices for parsing the modulation and coding scheme are different.

Optionally, the transmitter 1501 is further configured to send MCS offset value information, so that the UE or the network device that receives the offset value information sends or according to the offset value information and the first scheduling signaling. receive signal.

Optionally, the first scheduling signaling includes the second information, where the first scheduling signaling is further used to indicate that the first UE or the first network device reads the second information, where the first scheduling signaling is The method is further configured to instruct the second UE or the second network device to ignore the second information. Optionally, the second information includes at least one of power control information, precoding vector, or matrix information.

Optionally, the first scheduling signaling further includes third information, where the third information is used to indicate that different UEs or network devices use different values to send or receive signals.

Optionally, the transmitter 1501 is further configured to send specific scrambling code information;

The processor 1503 is further configured to scramble the first scheduling signaling according to the specific scrambling code information, so that the first UE and the second UE that receive the specific scrambling code information use the specific scrambling code The information receives the first scheduling signaling.

Optionally, the first scheduling signaling is used to indicate that the UE or the network device that receives the first scheduling signaling that is sent in the first transmission time interval is in the second transmission time interval according to the first scheduling signaling. Sending or receiving a signal, the duration between the second transmission time interval and the first transmission time interval is an integer multiple transmission time interval.

Optionally, the duration between the second transmission time interval and the first transmission time interval is the same as the transmission time interval and the transmission of the uplink transmission used only for scheduling signaling for scheduling uplink transmission. The value of the time interval. FIG. 16 is a flowchart of a wireless transmission method according to an embodiment of the present invention. See Figure 16, which includes:

The user equipment receives the first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to information included in the first scheduling signaling, where the first scheduling signal is The command is further configured to instruct the second UE or the second network device to receive the signal according to the information included in the first scheduling signaling;

1602, the user equipment determines its own device type according to device type configuration information;

1603. When the user equipment is a first UE, the user equipment sends a signal according to information included in the first scheduling signaling.

1604. When the user equipment is a second UE, the user equipment is configured according to the first scheduling signaling. The included information receives the signal. Optionally, based on the technical solution of the embodiment shown in FIG. 16, the first scheduling signaling includes device type configuration information; or

Before the step 1602, the user equipment determines the device type according to the device type configuration information, the method further includes: the user equipment receiving device type configuration information, where the device type configuration information is used to configure the user equipment Type of device.

The network device may send the device type configuration information to the user equipment in advance, to configure the user equipment type of the device, the device type includes the first UE and the second UE, and when the user equipment receives the device type configuration information, the network device is read. The configured device type, and performs transmission or reception corresponding to the device type according to the device type and the received first scheduling signaling.

In addition, it should be noted that the device type configuration information may also be carried in the first scheduling signaling and sent to the user equipment. Optionally, the first scheduling signaling includes time-frequency resource information, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the time-frequency resource information, where the first scheduling The signaling is further used to indicate that the second UE or the second network device receives the signal according to the time-frequency resource information.

Optionally, before the user equipment receives the first scheduling signaling, the method further includes: The user equipment receives the MCS offset value information, and sends or receives a signal according to the offset value information and the first scheduling signaling.

Optionally, the first scheduling signaling includes the second information, where the first scheduling signaling is further used to indicate that the first UE or the first network device reads the second information, where the first scheduling signaling is The method is further configured to instruct the second UE or the second network device to ignore the second information.

Optionally, the second information includes at least one of power control information, precoding vector or matrix information.

Optionally, before the user equipment receives the first scheduling signaling, the method further includes:

Receiving specific scrambling code information;

Correspondingly, the receiving, by the user equipment, the first scheduling signaling includes: receiving, by using the specific scrambling code information, the first scheduling signaling.

Optionally, the duration between the second transmission time interval and the first transmission time interval is the same as the transmission time interval and the transmission of the uplink transmission used only for scheduling signaling for scheduling uplink transmission. The value of the time interval.

Optionally, the user equipment receives the first scheduling signaling or the second scheduling signaling that is only used to schedule uplink or downlink transmission within the same transmission time interval, and ignores the first scheduling signaling. FIG. 17 is a schematic structural diagram of a user equipment according to an embodiment of the present invention. Referring to FIG. 17, the method includes: a transmitter 1701, a receiver 1702, and a processor 1703. The transmitter 1701 and the receiver 1702 are respectively coupled to the processor. The receiver 1702 is configured to receive a first scheduling signaling, where the first scheduling signaling is used to indicate that the first UE or the first network device sends a signal according to the information included in the first scheduling signaling, The first scheduling signaling is further used to indicate that the second UE or the second network device receives the signal according to the information included in the first scheduling signaling;

The processor 1703 is configured to determine a device type of the device according to the device type configuration information. When the user device is the first UE, the transmitter 1701 sends a signal according to the information included in the first scheduling signaling.

When the user equipment is the second UE, the user equipment receives the signal according to the information included in the first scheduling signaling by the receiver 1702.

Optionally, the first scheduling signaling includes device type configuration information; or

The receiver 1702 is further configured to receive device type configuration information, where the device type configuration information is used to configure a device type of the user equipment.

The receiver 1702 receives the MCS offset value information, and transmits or receives a signal according to the offset value information and the first scheduling signaling.

Optionally, the first scheduling signaling includes second information, where the first scheduling signaling is further used to indicate The first UE or the first network device reads the second information, where the first scheduling signaling is further used to indicate that the second UE or the second network device ignores the second information.

Optionally, the receiver 1702 is configured to receive specific scrambling code information.

Correspondingly, the receiver 1702 is further configured to receive the first scheduling signaling by using the specific scrambling code information.

Optionally, the processor is configured to ignore the first scheduling signaling if the first scheduling signaling is received in the same transmission time interval or the second scheduling signaling is only used to schedule uplink or downlink transmission. A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

claims

1. A wireless transmission method, characterized in that the method includes:

The first network device sends a downlink signal in a first time-frequency resource. The first time-frequency resource is a time-frequency resource in which the first UE sends an uplink signal. The first time-frequency resource carrying the downlink signal includes The subcarriers and the subcarriers included in the first time-frequency resource carrying the uplink signal correspond to the same frequency;

At least one of the downlink signal and the uplink signal includes a useful signal, and the resource unit corresponding to the reference signal included in any one of the uplink signal and the downlink signal and the resource corresponding to the useful signal in the other signal The units do not overlap, and the time-frequency resource includes multiple resource units, and each resource unit corresponds to a symbol in the time domain and a subcarrier in the frequency domain.

2. The method according to claim 1, characterized in that before the first network device sends a downlink signal in the first time-frequency resource, the method further includes:

The first network device sends subcarrier mapping mode indication information, and the subcarrier mapping mode indication information is used to indicate the subcarrier mapping mode used by the first UE when sending or receiving signals.

3. The method according to claim 1 or 2, characterized in that, the downlink signal and the uplink signal both include useful signals, and the reference signal included in any of the uplink signal and the downlink signal corresponds to The resource unit of the signal does not overlap with the resource unit corresponding to the useful signal in another signal.

4. The method according to claim 1, characterized in that: the downlink signal includes a downlink reference signal, and the uplink signal includes an uplink reference signal; the uplink reference signal and the downlink reference signal respectively use the first time frequency Different orthogonal resources on resources.

5. The method according to claim 4, characterized in that: the uplink reference signal and the downlink parameter The test signals respectively use different orthogonal resources on the first time-frequency resource including:

The uplink reference signal and the downlink reference signal respectively use orthogonal resources at different times in the first time-frequency resource; and/or,

6. The method according to any one of claims 1 to 5, characterized in that, a downlink reference signal is transmitted in a first resource unit included in the first time-frequency resource, and the first resource unit and the second The resource units are different, and the second resource unit is a resource unit included in the first time-frequency resource and used by the first UE to transmit an uplink reference signal.

7. The method according to claim 6, characterized in that the first network device does not send signals on the second resource unit.

8. The method according to any one of claims 1 to 7, characterized in that, the first network device sends zero power resource unit information to the first UE, so that the first UE operates under the zero power condition. No signal is sent on the resource unit indicated by the resource unit information.

9. The method according to any one of claims 1 to 8, characterized in that, the first network device sends zero power resource unit information to the second UE, so that the second UE is in the zero power resource unit. No signal is received on the resource unit indicated by the message.

10. The method according to claim 8 or 9, characterized in that: the zero power resource unit information

11. The method according to any one of claims 1 to 9, characterized in that, the uplink signal includes an uplink reference signal for detection, the downlink signal includes a downlink demodulation reference signal and a useful signal, or, the The downlink signal includes a downlink reference signal used for detection, and the uplink signal includes an uplink demodulation reference signal and a useful signal.

12. The method according to any one of claims 1-11, characterized in that, before the first network device sends a downlink signal in the first time-frequency resource, it includes:

The first network device receives first scheduling signaling, and the first scheduling signaling is used to instruct the first network device to send a signal on a first time-frequency resource.

13. The method according to any one of claims 1 to 12, characterized in that the signaling sent and received by the first network device and the first UE is UE-specific signaling.

14. The method according to any one of claims 1 to 13, characterized in that, the first network device receives type indication information sent by any UE, and learns whether the any UE can operate according to the type indication information. Send a signal in the first time-frequency resource.

15. The method according to claim 14, wherein the type indication information includes interference deletion capability identification information of any UE or system version information supported by any UE, and the interference deletion capability The identification information is used to indicate whether any UE has interference deletion capability.

16. The method according to any one of claims 1 to 15, characterized in that, the method further includes: the first network device sends a cell broadcast message, the cell broadcast message is used to notify the first network Other network devices or UEs in the cell where the device is located send uplink signals in the first time-frequency resource.

17. A wireless transmission method, characterized by including:

The second network device receives the downlink signal sent by the first network device in the first time-frequency resource; The second network device receives the uplink signal sent by the first UE in the first time-frequency resource; and the second network device obtains the signal sent by the first UE or the third signal according to the downlink signal and the uplink signal. A useful signal sent by a network device.

18. The method according to claim 17, wherein the second network device obtains the useful signal sent by the first UE according to the downlink signal and the uplink signal, including:

The second network device receives the downlink signal sent by the first network device in the first time-frequency resource and the uplink signal of the first UE, and The downlink signal sent in the resource and the interference signal in the uplink signal of the first UE are interfered and deleted, and the useful signal sent by the first UE or the first network device is obtained.

19. The method according to claim 17 or 18, characterized in that, before the second network device obtains the useful signal sent by the first UE according to the downlink signal and the uplink signal, the method further include:

Receive processing information for the interference signal.

20. The method according to any one of claims 17 to 19, characterized in that before the second network device receives the uplink signal sent by the first UE in the first time-frequency resource, it includes:

The second network device receives first scheduling signaling, and the first scheduling signaling is used to instruct the second network device to receive signals in a first time-frequency resource.

21. The method according to any one of claims 17 to 20, wherein the second network device receives a cell broadcast message, and the cell broadcast message is used to notify the second network device that the second network device is in the first time-frequency resource. Send downlink signals and/or receive uplink signals.

22. The method according to any one of claims 17 to 21, characterized in that the signaling sent and received by the second network device is UE-specific signaling.

23. A wireless transmission method, characterized in that the method includes:

The first user equipment UE sends an uplink signal in a first time-frequency resource. The first time-frequency resource is a time-frequency resource in which the first network device sends a downlink signal. The first time-frequency resource carries the downlink signal. The included subcarriers and the subcarriers carrying the uplink signal correspond to the same frequency;

At least one of the downlink signal and the uplink signal includes a useful signal, and the resource unit corresponding to any reference signal in the uplink signal and the downlink signal does not overlap with the resource unit corresponding to the useful signal in the other signal.

24. The method according to claim 23, wherein before the first UE sends a downlink signal in the first time-frequency resource, the method further includes:

The first UE receives subcarrier mapping mode indication information, and the subcarrier mapping mode indication information is used to indicate the subcarrier mapping mode used by the first UE when sending or receiving signals.

25. The method according to claim 23 or 24, characterized in that, the downlink signal and the uplink signal both include useful signals, and the resource unit corresponding to any reference signal in the uplink signal and the downlink signal and Resource units corresponding to useful signals in another signal do not overlap.

26. The method according to any one of claims 23 to 25, characterized in that: the downlink signal includes a downlink reference signal, and the uplink signal includes an uplink reference signal; the uplink reference signal and the downlink reference signal respectively use Describe different orthogonal resources on the first time-frequency resource.

27. The method according to claim 26, characterized in that the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource, including:

The uplink reference signal and the downlink reference signal respectively use different times in the first time-frequency resource. Orthogonal resources between; and/or,

28. The method according to any one of claims 23 to 27, characterized in that, the first UE sends a downlink reference signal in a first resource unit of the first time-frequency resource, and the first resource unit Different from the second resource unit, the second resource unit is a resource unit used by the first UE to transmit an uplink reference signal.

29. The method according to claim 28, characterized in that the first UE does not send signals on the first resource unit.

30. The method according to any one of claims 23 to 29, characterized in that, the first UE receives zero power resource unit information, and the first UE is on the resource unit indicated by the zero power resource unit information. No signal is sent.

31. The method according to any one of claims 23 to 29, characterized in that, the first UE receives zero power resource unit information, and the first UE is on the resource unit indicated by the zero power resource unit information. Not receiving signal.

32. The method according to claim 30 or 31, characterized in that the zero power resource unit information includes: reference signal transmission cycle and time offset information.

33. The method according to any one of claims 23 to 32, characterized in that, before the first UE sends the uplink signal in the first time-frequency resource, it includes:

The first UE receives first scheduling signaling, and the first scheduling signaling is used to instruct the first UE to send a signal on a first time-frequency resource.

34. The method according to any one of claims 23 to 33, characterized in that the first UE sends type indication information to the first network device, and learns whether the first UE is based on the type indication information. Send a signal in the first time-frequency resource.

35. The method according to claim 34, wherein the type indication information includes interference deletion capability identification information of the first UE or system version information supported by the first UE, and the interference deletion capability The identification information is used to indicate whether the first UE has interference deletion capability.

36. The method according to any one of claims 23 to 35, characterized in that, the first UE receives a cell broadcast message of the cell where the first UE is located, and the cell broadcast message carries the information of the cell where the first UE is located. The receiving or sending mode supported by the cell is to learn whether the cell where the first UE is located supports the sending mode of the first UE itself according to the cell broadcast message.

37. The method according to any one of claims 23 to 36, characterized in that the signaling sent and received by the first network device and the first UE is UE-specific signaling.

38. The method according to any one of claims 23 to 37, characterized in that if the first UE receives the first scheduling signaling and the second scheduling signaling only for scheduling uplink or downlink transmission within the same transmission time interval, Scheduling signaling, ignoring the first scheduling signaling.

39. A wireless transmission method, characterized in that the method includes:

The second UE receives the downlink signal sent by the second network device in the first time-frequency resource; the second UE receives the uplink signal sent by the first UE in the first time-frequency resource; the second UE According to the downlink signal and the uplink signal, a useful signal sent by the first UE or the second network device is obtained.

40. The method according to claim 39, characterized in that, the second UE obtains the useful signal sent by the first UE or the second network device according to the downlink signal and the uplink signal, including :

The second UE receives the downlink signal sent by the second network device in the first time-frequency resource and the uplink signal of the first UE, and transmits the downlink signal by the second network device in the first time-frequency resource. The interference signal in the downlink signal and the uplink signal of the first UE is interfered and deleted, and a useful signal sent by the first UE or the second network device is obtained.

41. The method according to claim 39 or 40, characterized in that, before the second UE acquires the useful signal sent by the first UE or the second network device according to the downlink signal and the uplink signal, The method also includes:

Receive processing information for the interference signal.

42. The method according to any one of claims 39 to 41, characterized in that, before the second UE receives the downlink signal sent by the second network device in the first time-frequency resource, it includes:

The second UE receives first scheduling signaling, and the first scheduling signaling is used to instruct the first UE to receive signals in a first time-frequency resource.

43. The method according to any one of claims 39 to 42, characterized in that the second UE sends type indication information to the first network device, and the second UE is learned according to the type indication information. Whether to send signals in the first time-frequency resource.

44. The method according to claim 43, wherein the type indication information includes interference deletion capability identification information of the second UE or system version information supported by the second UE, and the interference deletion capability The identification information is used to indicate whether the second UE has interference deletion capability.

45. The method according to any one of claims 39 to 44, characterized in that, the second UE receives A cell broadcast message of the cell where the second UE is located, the cell broadcast message carries a receiving or sending mode supported by the cell where the second UE is located, and it is learned according to the cell broadcast message whether the cell where the second UE is located supports the The sending method of the second UE itself.

46. The method according to any one of claims 39 to 45, characterized in that if the second UE receives the first scheduling signaling or the second scheduling only used to schedule uplink or downlink transmission within the same transmission time interval, signaling, ignoring the first scheduling signaling.

47. A wireless transmission method, characterized by including:

The third network device sends first scheduling signaling, the first scheduling signaling is used to instruct the first UE or the first network device to send a signal according to the information included in the first scheduling signaling, the first scheduling signaling The command is also used to instruct the second UE or the second network device to receive a signal according to the information included in the first scheduling signaling.

48. The method according to claim 47, characterized in that, the first scheduling signaling includes time-frequency resource information, and the first scheduling signaling is used to instruct the first UE or the first network device to schedule the first UE or the first network device according to the time-frequency resource information. The first scheduling signaling is also used to instruct the second UE or the second network device to receive a signal according to the time-frequency resource information.

49. The method according to claim 47 or 48, characterized in that the first scheduling signaling further includes: any one of modulation and coding scheme information, transmission layer number information and reference signal orthogonal resource information.

50. The method according to claim 49, characterized in that different UEs or different network devices or different types of devices are configured to parse the signaling fields included in the first scheduling signaling. different.

51. The method according to claim 49, characterized in that, different UEs or different network devices or different types of devices are configured to parse the transmission layer number information or reference signal orthogonal resource information. The way is different.

52. The method according to claim 49, characterized in that the parsing methods for parsing the modulation and coding scheme configured on different UEs or different network devices or different types of devices are different.

53. The method according to any one of claims 47-52, characterized in that before the third network device sends the first scheduling signaling, the method further includes:

The third network device sends MCS offset value information, so that the UE or network device that receives the offset value information sends or receives a signal according to the offset value information and the first scheduling signaling.

54. The method according to any one of claims 47 to 53, characterized in that the first scheduling signaling includes second information, and the first scheduling signaling is also used to indicate the first UE or the first network The device reads the second information, and the first scheduling signaling is also used to instruct the second UE or the second network device to ignore the second information.

55. The method according to claim 54, characterized in that the second information includes at least one of power control information, precoding vectors or matrix information.

56. The method according to any one of claims 47 to 55, characterized in that the first scheduling signaling also includes third information, the third information is used to instruct different UEs or network devices to use different Gets a value to send or receive a signal.

57. The method according to any one of claims 47-56, characterized in that, before the third network device sends the first scheduling signaling, the method further includes:

The third network device sends specific scrambling code information; The first scheduling signaling is scrambled according to the specific scrambling code information, so that the first UE and the second UE that receive the specific scrambling code information use the specific scrambling code information to receive the first scheduling signaling. make.

58. The method according to any one of claims 47 to 57, characterized in that the first scheduling signaling is used to indicate the UE that receives the first scheduling signaling sent in the first transmission time interval or The network device sends or receives a signal in a second transmission time interval according to the first scheduling signaling, and the duration between the second transmission time interval and the first transmission time interval is an integer multiple of the transmission time interval.

59. The method according to claim 58, characterized in that the second transmission time interval is a value of a transmission time interval of scheduling signaling and a transmission time interval of uplink transmission.

60. A first network device, characterized in that the first network device includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The transmitter is configured to send downlink signals in a first time-frequency resource, where the first time-frequency resource is a time-frequency resource in which the first UE sends an uplink signal, and is a first time-frequency resource that carries the downlink signal. The included subcarriers correspond to the same frequency as the subcarriers included in the first time-frequency resource carrying the uplink signal;

61. The first network device according to claim 60, characterized in that, the transmitter is used to send subcarrier mapping mode indication information, and the subcarrier mapping mode indication information is used to instruct the first UE to send Or the subcarrier mapping method used when receiving signals.

62. The first network device according to claim 60 or 61, characterized in that, the downlink signal and the uplink signal both include useful signals, and any one of the uplink signal and the downlink signal includes The resource unit corresponding to the reference signal does not overlap with the resource unit corresponding to the useful signal in another signal.

63. The first network device according to any one of claims 60 to 62, characterized in that: the downlink signal includes a downlink reference signal, the uplink signal includes an uplink reference signal; the uplink reference signal and the downlink reference signal Different orthogonal resources on the first time-frequency resource are respectively used.

64. The first network device according to claim 63, wherein the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource, including:

65. The first network device according to any one of claims 60 to 64, characterized in that, a downlink reference signal is sent in a first resource unit included in the first time-frequency resource, and the first resource unit Different from the second resource unit, the second resource unit is a resource unit included in the first time-frequency resource and used by the first UE to transmit an uplink reference signal.

66. The first network device according to claim 65, wherein the transmitter does not send signals on the second resource unit.

67. The first network device according to any one of claims 60 to 66, characterized in that the transmitter is further configured to send zero power resource unit information to the first UE, so that the first UE No signal is sent on the resource unit indicated by the zero-power resource unit information.

68. The first network device according to any one of claims 60 to 67, characterized in that the transmitter is also configured to send zero power resource unit information to the second UE, so that the second UE is in the No signal is received on the resource unit indicated by the zero power resource unit information.

69. The first network device according to claim 67 or 68, characterized in that the zero-power resource unit information includes: reference signal transmission cycle and time offset information.

70. The first network device according to any one of claims 60 to 69, characterized in that, the uplink signal includes an uplink reference signal for detection, and the downlink signal includes a downlink demodulation reference signal and a useful signal, Alternatively, the downlink signal includes a downlink reference signal used for detection, and the uplink signal includes an uplink demodulation reference signal and a useful signal.

71. The first network device according to any one of claims 60 to 70, characterized in that: the receiver is also used to receive first scheduling signaling, and the first scheduling signaling is used to indicate the first A network device sends a signal on a first time-frequency resource.

72. The first network device according to any one of claims 60 to 71, wherein the signaling sent and received by the first network device and the first UE is UE-specific signaling.

73. The first network device according to any one of claims 60 to 72, characterized in that the receiver is also configured to receive type indication information sent by any UE, and learn the type indication information of any UE according to the type indication information. Whether a UE can send signals in the first time-frequency resource.

74. The first network device according to claim 73, wherein the type indication information includes interference deletion capability identification information of any UE or system version information supported by any UE, and the interference deletion The capability identification information is used to indicate whether any UE has interference deletion capability.

75. The first network device according to any one of claims 60 to 74, characterized in that the transmitter is also used to send a cell broadcast message, and the cell broadcast message is used to notify the location of the first network device. Other network devices or UEs in the cell send uplink signals in the first time-frequency resource.

76. A second network device, characterized in that it includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The receiver is used to receive a downlink signal sent by the first network device in the first time-frequency resource; the receiver is also used to receive an uplink signal sent by the first UE in the first time-frequency resource; the The processor is configured to obtain the useful signal sent by the first UE or the first network device according to the downlink signal and the uplink signal.

77. The second network device according to claim 76, wherein the receiver is configured to receive a downlink signal sent by the first network device in the first time-frequency resource and a signal of the first UE. Upward signal;

The processor is configured to perform interference deletion on the downlink signal sent by the first network device in the first time-frequency resource and the interference signal in the uplink signal of the first UE, and obtain the first UE or the first UE. A network device sends a useful signal.

78. The second network device according to claim 76 or 77, characterized in that the receiver is also used to receive processing information on the interference signal.

79. The second network device according to any one of claims 76 to 78, characterized in that, the receiver is also used to receive first scheduling signaling, and the first scheduling signaling is used to indicate the first 2. Network equipment A signal is received in the first time-frequency resource.

80. The second network device according to any one of claims 76 to 79, the receiver is further configured to receive a cell broadcast message, and the cell broadcast message is used to notify the second network device when the first Send downlink signals and/or receive uplink signals in time-frequency resources.

81. The second network device according to any one of claims 76 to 80, wherein the signaling sent and received by the second network device is UE-specific signaling.

82. A first user equipment, characterized in that the first user equipment includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The transmitter is configured to send an uplink signal in a first time-frequency resource, the first time-frequency resource is a time-frequency resource in which the first network device sends a downlink signal, and the first time-frequency resource carrying the downlink signal is The included subcarriers and the subcarriers carrying the uplink signal correspond to the same frequency;

83. The first user equipment according to claim 82, characterized in that, the downlink signal and the uplink signal both include useful signals, and the resource unit corresponding to any reference signal in the uplink signal and the downlink signal Resource units corresponding to useful signals in another signal do not overlap.

84. The first user equipment according to claim 82 or 83, characterized in that the receiver is used to receive subcarrier mapping mode indication information, and the subcarrier mapping mode indication information is used to instruct the first UE to send Or the subcarrier mapping method used when receiving signals.

85. The first user equipment according to claims 82-84, characterized in that: the downlink signal Including a downlink reference signal, the uplink signal includes an uplink reference signal; the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource.

86. The first user equipment according to claim 85, wherein the uplink reference signal and the downlink reference signal respectively use different orthogonal resources on the first time-frequency resource, including:

87. The first user equipment according to any one of claims 82 to 86, characterized in that, the transmitter is configured to transmit a downlink reference signal in a first resource unit of the first time-frequency resource, and the third One resource unit is different from the second resource unit, and the second resource unit is a resource unit used by the first UE to send an uplink reference signal.

88. The first user equipment according to claim 87, wherein the transmitter is further configured to not send a signal on the first resource unit.

89. The first user equipment according to any one of claims 82 to 88, characterized in that, the receiver is configured to receive zero power resource unit information, and the first UE is in a state indicated by the zero power resource unit information. No signal is sent on the resource unit.

90. The first user equipment according to any one of claims 82 to 89, characterized in that, the receiver receives zero power resource unit information, and the first UE is in the resource indicated by the zero power resource unit information. No signal is received on the unit.

91. The first user equipment according to claim 89 or 90, characterized in that the zero power resource unit information includes: reference signal transmission cycle and time offset information.

92. The first user equipment according to any one of claims 82 to 91, characterized in that the receiver is further configured to receive first scheduling signaling, and the first scheduling signaling is used to indicate the first A UE sends a signal on the first time-frequency resource.

93. The first user equipment according to any one of claims 82 to 92, characterized in that the receiver is configured to send type indication information to the first network device, and learn the first user equipment according to the type indication information. Whether a UE sends a signal in the first time-frequency resource.

94. The first user equipment according to claim 93, wherein the type indication information includes interference removal capability identification information of the first UE or system version information supported by the first UE, and the The interference deletion capability identification information is used to indicate whether the first UE has the interference deletion capability.

95. The first user equipment according to any one of claims 82 to 94, characterized in that the receiver is configured to receive a cell broadcast message of the cell where the first UE is located, and the cell broadcast message carries the first A reception or transmission mode supported by the cell where the UE is located, and whether the cell where the first UE is located supports the transmission mode of the first UE itself according to the cell broadcast message.

96. The first user equipment according to any one of claims 82 to 95, wherein the signaling sent and received by the first network device and the first UE is UE-specific signaling.

97. The first user equipment according to any one of claims 82 to 96, characterized in that the processor is configured to schedule uplink or The second scheduling signaling for downlink transmission ignores the first scheduling signaling.

98. A second user equipment, characterized in that the second user equipment includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The receiver is further configured to receive an uplink signal sent by the first UE in the first time-frequency resource; and the processor is configured to obtain the first UE or the second signal according to the downlink signal and the uplink signal. Useful signals sent by network devices.

99. The second user equipment according to claim 98, wherein the receiver is configured to receive a downlink signal sent by the second network device in the first time-frequency resource and a signal of the first UE. Upward signal;

The processor is configured to perform interference deletion on the downlink signal sent by the second network device in the first time-frequency resource and the interference signal in the uplink signal of the first UE, and obtain the first UE or the first UE. The useful signal sent by the second network device.

100. The second user equipment according to claim 98 or 99, characterized in that the receiver is further configured to receive processing information on the interference signal.

101. The second user equipment according to any one of claims 98 to 100, characterized in that, the receiver is further configured to receive first scheduling signaling, and the first scheduling signaling is used to indicate the first A UE receives a signal in the first time-frequency resource.

102. The second user equipment according to any one of claims 98 to 101, characterized in that the transmitter is also configured to send type indication information to the first network device, and learn the type indication information according to the type indication information. Whether the second UE sends a signal in the first time-frequency resource.

103. The second user equipment according to claim 102, wherein the type indication information includes interference removal capability identification information of the second UE or system version information supported by the second UE, The interference deletion capability identification information is used to indicate whether the second UE has the interference deletion capability.

104. The second user equipment according to any one of claims 98 to 103, characterized in that the receiver is further configured to receive a cell broadcast message of the cell where the second UE is located, and the cell broadcast message carries the The reception or transmission mode supported by the cell where the second UE is located is learned according to the cell broadcast message whether the cell where the second UE is located supports the transmission mode of the second UE itself.

105. The second user equipment according to any one of claims 98 to 104, characterized in that, the processor is further configured to: if the first scheduling signaling is received within the same transmission time interval or only to schedule uplink or the second scheduling signaling for downlink transmission, ignoring the first scheduling signaling.

106. A third user equipment, characterized in that it includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The transmitter is used to send first scheduling signaling, and the first scheduling signaling is used to instruct the first UE or the first network device to send a signal according to the information included in the first scheduling signaling, the first scheduling The signaling is also used to instruct the second UE or the second network device to receive a signal according to the information included in the first scheduling signaling.

107. A wireless transmission method, characterized by including:

The user equipment receives the first scheduling signaling, the first scheduling signaling is used to instruct the first UE or the first network device to send a signal according to the information included in the first scheduling signaling, the first scheduling signaling further Used to instruct the second UE or the second network device to receive a signal according to the information included in the first scheduling signaling; The user equipment determines its own device type according to the device type configuration information;

When the user equipment is the first UE, the user equipment according to the first scheduling signaling included information sending signals;

When the user equipment is the second UE, the user equipment receives a signal according to the information included in the first scheduling signaling.

108. The method according to claim 107, characterized in that,

The first scheduling signaling includes device type configuration information;

Or, before the user equipment determines its own device type according to the device type configuration information, the method further includes:

The user equipment receives device type configuration information, and the device type configuration information is used to configure the device type of the user equipment.

109. The method according to claim 107 or 108, characterized in that the first scheduling signaling includes time-frequency resource information, and the first scheduling signaling is used to instruct the first UE or the first network device according to the The time-frequency resource information sends a signal, and the first scheduling signaling is also used to instruct the second UE or the second network device to receive a signal according to the time-frequency resource information.

110. The method according to any one of claims 107 to 109, characterized in that the first scheduling signaling further includes: any one of modulation and coding scheme information, transmission layer number information and reference signal orthogonal resource information. item.

111. The method according to any one of claims 107 to 109, characterized in that different UEs or different network devices or different types of devices are configured to handle the information contained in the first scheduling signaling. Make fields parsed differently.

112. The method according to claim 110, characterized in that: different UEs or different network devices or different types of devices are configured to parse the transmission layer number information or reference signal orthogonal resource information. The way is different.

113. The method according to claim 110, characterized in that the parsing methods for parsing the modulation and coding scheme configured on different UEs or different network devices or different types of devices are different.

114. The method according to any one of claims 107-113, characterized in that before the user equipment receives the first scheduling signaling, the method further includes:

The user equipment receives and sends MCS offset value information, and sends or receives a signal according to the offset value information and the first scheduling signaling.

115. The method according to any one of claims 107 to 114, characterized in that the first scheduling signaling includes second information, and the first scheduling signaling is also used to indicate the first UE or the first network The device reads the second information, and the first scheduling signaling is also used to instruct the second UE or the second network device to ignore the second information.

116. The method according to claim 115, characterized in that the second information includes at least one of power control information, precoding vectors or matrix information.

117. The method according to any one of claims 107 to 116, characterized in that the first scheduling signaling also includes third information, the third information is used to instruct different UEs or network devices to use different Gets a value to send or receive a signal.

118. The method according to any one of claims 107-117, characterized in that before the user equipment receives the first scheduling signaling, the method further includes:

Receive specific scrambling code information;

Correspondingly, the user equipment receiving the first scheduling signaling includes: using the specific scrambling code information to receive the first scheduling signaling.

119. The method according to any one of claims 107 to 118, wherein the first scheduling signaling is used to indicate the UE that receives the first scheduling signaling sent in the first transmission time interval or The network device sends or receives a signal in a second transmission time interval according to the first scheduling signaling, and the duration between the second transmission time interval and the first transmission time interval is an integer multiple of the transmission time interval.

120. The method according to claim 119, characterized in that the second transmission time interval is a value of a transmission time interval of scheduling signaling and a transmission time interval of uplink transmission.

121. The method according to any one of claims 107 to 120, characterized in that if the user equipment receives the first scheduling signaling within the same transmission time interval or the second scheduling signaling only used for scheduling uplink or downlink transmission, Scheduling signaling, ignoring the first scheduling signaling.

122. A user equipment, characterized in that it includes: a transmitter, a receiver and a processor, the transmitter and the receiver are respectively coupled to the processor,

The receiver is configured to receive first scheduling signaling. The first scheduling signaling is used to instruct the first UE or the first network device to send a signal according to the information included in the first scheduling signaling. A scheduling signaling is also used to instruct the second UE or the second network device to receive a signal according to the information included in the first scheduling signaling;

The processor is configured to determine its own device type according to the device type configuration information;

When the user equipment is the first UE, send a signal through the transmitter according to the information included in the first scheduling signaling;

When the user equipment is the second UE, the user equipment receives a signal through the receiver according to the information included in the first scheduling signaling.