WO2019100365A1

WO2019100365A1 - Wireless communication method and device

Info

Publication number: WO2019100365A1
Application number: PCT/CN2017/113046
Authority: WO
Inventors: 沈思多; 王成毅; 张涵
Original assignee: 华为技术有限公司
Priority date: 2017-11-27
Filing date: 2017-11-27
Publication date: 2019-05-31

Abstract

The present application provides a wireless communication method, by which interference of a cross link can be obtained by properly using a network resource, and there is no conflict with data transmission when the interference of the cross link is obtained. The method is applied in a time division duplex system, and multiple network devices in the system dynamically allocate a bandwidth as an uplink resource or a downlink resource respectively. The method comprises: determining that a first network device has no data transmission in a first time period; measuring a signal intensity in a system bandwidth in the first time period; and determining, according to the measured signal strength, an interference degree generated when another network device in a system sends a wireless signal.

Description

Method and device for wireless communication

Technical field

The present application relates to the field of communications and, more particularly, to a method and network device for wireless communication.

Background technique

In recent years, mobile communication has gradually shifted from the previous voice service to data services. The demand for uplink and downlink time-frequency resources of voice services is relatively fixed. However, with the data services such as web browsing, video on demand, and remote monitoring, the demand for uplink and downlink time-frequency resources of the network fluctuates with time. Therefore, in the future communication network, dynamic adjustment of the uplink and downlink resources of the network will be supported, but in the time division duplexing (TDD), when multiple adjacent cells independently and dynamically allocate uplink and downlink time-frequency resources, The transmission direction of the neighboring cells on the same time-frequency resource may be different, so cross-link interference may occur. After the cross-link interference reaches a certain strength, the uplink receiving performance may be deteriorated, and the uplink receiver may not work normally. . After the cross-link interference is obtained, the cross-link interference can be adjusted according to the cross-link interference to reduce the impact of cross-link interference.

Summary of the invention

The present application provides a method and a network device for wireless communication, which can reasonably utilize network resources to acquire interference of a cross link, and does not conflict with data transmission when acquiring cross link interference.

In a first aspect, a method for wireless communication is provided, the method being applied to a time division duplex system, wherein a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource, The method is performed by a first network device, the method comprising: determining that the first network device has no data transmission during a first time period, measuring a signal strength within the system bandwidth during the first time period; and determining the signal strength according to the measured Determine the interference strength generated by other network devices in the system to send wireless signals.

Therefore, in the present application, it is determined that the first network device has no data transmission in the first time period, and the other network devices in the system transmit the wireless signal by measuring the signal strength in the system bandwidth during the first time period. The intensity of the interference generated. Reasonable use of network resources to obtain cross-link interference does not conflict with data transmission when acquiring cross-link interference.

With reference to the first aspect, in some implementations of the first aspect, the determining that the first network device does not transmit data during the first time period includes: determining, according to the situation in which the first network device schedules the terminal device The first network device has no data transmission during the first time period, and the terminal device is within the coverage of the first network device.

At this time, according to the situation that the first network device schedules the terminal device, it is determined that the first network device does not have data transmission in the first time period, and the working state of the first network device may be monitored in real time and dynamically. In order to determine that the first network device does not have data transmission during the first time period, the signal strength in the system bandwidth may be measured in the first time period in time and accurately, and then according to the measured signal. Intensity determines the interference strength generated by other network devices in the system to transmit wireless signals.

In conjunction with the first aspect, in some implementations of the first aspect, the first time period is at least one orthogonal frequency division multiplexing symbol.

It should be understood that the first time period may also be a subframe.

In conjunction with the first aspect, in some implementations of the first aspect, the signal power and/or phase of the first pilot signal is measured, the first pilot signal being a pilot transmitted by the second network device in the system a frequency signal; determining, according to the measured signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device, determining that the second network device is Channel information between the first network devices, where the first terminal device includes power and/or phase of a first pilot signal sent by the second network device.

The channel information refers to the channel properties of the communication link, and describes the attenuation factor of the signal on each transmission path, that is, the value of each element in the channel gain matrix. An element in the channel gain matrix is a complex number representing the attenuation and phase change of the channel-to-signal between a transmit channel and a receive channel.

It should be understood that the second network device may be any network device other than the first network device within the TDD system.

At this time, the first terminal device measures the signal power and/or phase of the first pilot signal according to the measured signal power and/or phase of the first pilot signal, and the second network device sends the first The power and/or phase of a pilot signal is used to obtain channel information between the second network device and the first network device, and some means may be used according to the channel information to reduce interference of the cross link.

In conjunction with the first aspect, in some implementations of the first aspect, the measuring the signal power and/or phase of the first pilot signal comprises: measuring a signal power of the first pilot signal according to the measurement map / or phase.

At this time, the signal power and/or phase of the first pilot signal is measured according to the measurement map. Since the measurement map is pre-configured or agreed, the first network device is not required to send to the second network device. The information is triggered, so communication between the first network device and other network devices can be reduced, and network resources are saved.

In conjunction with the first aspect, in some implementations of the first aspect, the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises: when the measurement map includes measuring the And searching for the second period of time during a second period of a pilot signal; measuring signal power and phase of the first pilot signal during the second period of time.

In conjunction with the first aspect, in some implementations of the first aspect, the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises: when the measurement map includes the second When the network device sends the third time period of the first pilot signal, determining, according to the physical distance between the first network device and the second network device, a signal sent by the first terminal device to the a transmission time of the second terminal device; determining, according to the third time period and the transmission time, a fourth time period in which the first network device measures the first pilot signal.

At this time, when the measurement spectrum includes the third time period in which the second network device sends the first pilot signal, according to a physical distance between the first network device and the second network device, Determining a transmission time of the signal sent by the first terminal device to the second terminal device, and then determining, according to the third time period and the transmission time, that the first network device measures the first pilot The fourth time period of the signal fully considers the time of wireless signal transmission between the first network device and the second network device, and reduces errors caused by wireless signal transmission.

In conjunction with the first aspect, in some implementations of the first aspect, the method further comprising: transmitting, according to the measurement map, a second pilot signal for use in the system other than the first network device The network device measures the second pilot signal.

In conjunction with the first aspect, in some implementations of the first aspect, the measurement map comprises each of the systems a period of time during which the network device transmits the pilot signal, and a time period during which each of the network devices measures the pilot signal.

In conjunction with the first aspect, in some implementations of the first aspect, the method further includes: the first network device receiving the measurement map; or the first network device determining the measurement map and The network device other than the first network device in the system transmits the measurement map.

Specifically, in the TDD system, the configuration information is determined by the first network device, and the configuration information is sent to other network devices in the TDD system; or the other network devices in the TDD system determine the configuration information, The first network device receives the configuration information.

In a second aspect, a method for wireless communication is provided, the method being applied to a time division duplex system, where a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource, The method is performed by a first network device, the method comprising: measuring a signal power and/or a phase of a first pilot signal, the first pilot signal being a pilot signal transmitted by a second network device in the system; Determining the signal power and/or phase of the first pilot signal and the power and/or phase of the first pilot signal transmitted by the second network device to determine the second network device to the first Channel information between network devices, the first terminal device including power and/or phase of a first pilot signal transmitted by the second network device.

Therefore, in the present application, the first terminal device measures the signal power and/or phase of the first pilot signal according to the measured signal power and/or phase of the first pilot signal, and the second network. The power and/or phase of the first pilot signal sent by the device is used to obtain channel information between the second network device and the first network device, and some means may be used according to the channel information to reduce cross-link interference. .

It should be understood that the second network device may be a network device other than the first network device within the TDD system.

In conjunction with the second aspect, in some implementations of the second aspect, the measuring the signal power and/or phase of the first pilot signal comprises: measuring a signal power of the first pilot signal according to the measurement map / or phase.

In conjunction with the second aspect, in some implementations of the second aspect, the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises: when the measurement map includes measuring the And searching for the second period of time during a second period of a pilot signal; measuring signal power and phase of the first pilot signal during the second period of time.

In conjunction with the second aspect, in some implementations of the second aspect, the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises: when the measurement map includes the second When the network device sends the third time period of the first pilot signal, determining, according to the physical distance between the first network device and the second network device, a signal sent by the first terminal device to the a transmission time of the second terminal device; determining, according to the third time period and the transmission time, a fourth time period in which the first network device measures the first pilot signal.

In conjunction with the second aspect, in some implementations of the second aspect, the method further comprising: transmitting, according to the measurement map, a second pilot signal for use in the system other than the first network device The network device measures the second pilot signal.

In conjunction with the second aspect, in some implementations of the second aspect, the measurement map includes a time period in which each of the network devices in the system transmits a pilot signal, and the each of the network devices measures a pilot signal period.

In conjunction with the second aspect, in some implementations of the second aspect, the method further includes: the first network device receiving the measurement map; or the first network device determining the measurement map and The network device other than the first network device in the system sends the configuration information.

In a third aspect, a network device is provided, where the network device is a first network device, and the network device is applied to a time division duplex system, each of the network devices dynamically allocating the system bandwidth to An uplink resource or a downlink resource, where the network device includes:

a determining module, configured to determine that the first network device has no data transmission during the first time period;

a measuring module, configured to measure a signal strength within a bandwidth of the system during the first time period;

The determining module is further configured to determine, according to the measured signal strength, an interference strength generated by another network device in the system to send a wireless signal.

Optionally, the network device may perform the method in the first aspect or any alternative implementation of the first aspect.

In a fourth aspect, a network device is provided, where the network device is a first network device, and the network device is applied to a time division duplex system, each of the network devices dynamically allocating the system bandwidth to An uplink resource or a downlink resource, where the network device includes:

a measuring module, configured to measure a signal power and/or a phase of the first pilot signal, where the first pilot signal is a pilot signal sent by a second network device in the system;

a determining module, configured to determine the second network according to the measured signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device Channel information between the device and the first network device, where the first terminal device includes power and/or phase of a first pilot signal transmitted by the second network device.

Optionally, the network device may perform the method in any of the optional implementations of the second aspect or the second aspect.

In a fifth aspect, a network device is provided, where the network device is a first network device, including: at least one processor, a memory, and a transceiver, the memory is configured to store an instruction, and the transceiver is used in the terminal device Communicating with other devices, the stored instructions being executed directly or indirectly by the at least one processor, such that the network device performs the first aspect or any alternative implementation of the first aspect, and the second aspect or The method of any of the alternative implementations of the second aspect.

In a sixth aspect, a chip system is provided, comprising: at least one processor, the at least one processor configured to execute stored instructions, such that the first network device can perform any of the first aspect or the first aspect An optional implementation, and the method of any of the alternative aspects of the second aspect or the second aspect.

In a seventh aspect, a computer program product is provided, the computer program product comprising instructions that, when executed, cause the first network device to perform any of the optional aspects of the first aspect or the first aspect Implementation, and method of any of the alternative implementations of the second aspect or the second aspect.

In an eighth aspect, a computer readable medium storing program code, when the computer program code is run on a computer, causes the first network device to perform the first aspect or One party Any optional implementation of the face, and the method of any of the alternative aspects of the second aspect or the second aspect.

DRAWINGS

1 is a schematic block diagram of a method of wireless communication and a wireless communication system architecture of a network device in accordance with the present application.

2 is a schematic flow chart of a method of wireless communication in accordance with the present application.

3 is a schematic block diagram of a measurement map of transmitted and measured pilot signals in accordance with the present application.

4 is a schematic block diagram of determining a measurement time in accordance with the present application.

FIG. 5 is a schematic flowchart of a method of wireless communication according to the present application.

Figure 6 is a schematic block diagram of a network device in accordance with the present application.

7 is a schematic block diagram of a communication device provided in accordance with the present application.

Detailed ways

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

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Code Division Multiple Access (CDMA) system, a General Packet Radio Service (GPRS), and a Long Term Evolution (Long Term Evolution). , LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), the future fifth generation ( 5th Generation, 5G) system or New Radio (NR).

The terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or in the future evolution of the Public Land Mobile Network (PLMN) The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA). Base Transceiver Station (BTS), which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future. The network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.

1 is a system architecture diagram of a method and apparatus for wireless communication in accordance with the present application. As shown in FIG. 1, the system 100 includes a cell 1 and a cell 2. The cell 1 includes a network device 110 and a terminal device 130. The cell 2 includes a network device 120 and a terminal device 140. The system 100 is Time Division Duplexing (TDD). The TDD mobile communication system receives and transmits in different time slots of the same frequency channel, that is, the carrier, and separates the receiving and transmitting channels with the guaranteed time. In the same video resource in the traditional cellular network, the network transmission direction is consistent, and there is no cross-link interference. However, in the future 5G network, the transmission directions of the neighboring cells may be different at the same transmission time. For example, during the same time period, the network device 110 receives the uplink data sent by the terminal device 130, and the network device 120 sends the uplink data to the terminal device 140. Downstream data, the network device 110 performing uplink transmission is subject to severe interference from the downlink transmission network device 120. At the same time, on the terminal device side, the terminal device 130 also interferes with the nearby terminal device 140 in the receiving transmission state. This type of interference is called cross-link interference. After the cross-link interference reaches a certain strength, the uplink receiving performance will be deteriorated, and the uplink receiver may not work properly.

The present application provides a method for wireless communication, which is applied to a TDD system, and can perform pre-measurement on interference of a cross-link, and is beneficial to perform adjustment of uplink and downlink subframes in network device communication according to interference of the cross-link. , thereby reducing the impact of the cross-link interference on the receiving end and improving the communication quality.

For a better understanding of the present application, the present application is described below with reference to FIGS. 2 through 7.

2 is a schematic flow diagram of a method 200 of wireless communication in accordance with the present application. The method 200 is applied to a time division duplex system, in which a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource. As shown in FIG. 2, the method 200 includes the following.

Step 210: The first network device determines that the first network device has no data transmission in the first time period.

Step 220: The first network device measures a signal strength within the system bandwidth during the first time period.

Specifically, the signal strength of the first network device within the system bandwidth during the no data transmission period, and the signal strength may be the power value of the electromagnetic wave within the system bandwidth.

Step 230: The first network device determines, according to the measured signal strength, an interference strength generated by other network devices in the system.

Specifically, the first network device determines the signal strength as the interference strength generated by the other network devices in the system to transmit the wireless signal according to the signal strength within the system bandwidth measured during the no data transmission period.

Optionally, in step 210, the determining that the first network device has no data transmission in the first time period includes: determining, according to the situation that the first network device schedules the terminal device, the first network device in the first time period There is no data transmission, and the terminal device is within the coverage of the first network device.

Specifically, when the first network device does not have data transmission between the first network device and the terminal device in the coverage of the first network device, determining that the first network device has no data transmission in the first time period. .

Optionally, the first time period is at least one orthogonal frequency division multiplexing symbol.

Specifically, the first time period may be one orthogonal frequency division multiplexing symbol, or may be multiple orthogonal frequency division multiplexing symbols. The duration of the first time period is determined primarily by the length of time that the first network device does not transmit data. If the data transmission period of the first network device is an Orthogonal Frequency Division Multiplexing (OFDM) symbol, the measurement result is a power value of one OFDM symbol, if the first network device has no data transmission period For multiple OFDM symbols, the measurement is the average of the power of multiple OFDM symbols.

It should be understood that the first time period may also be a subframe.

Optionally, the method 200 further includes: measuring a signal power and/or a phase of the first pilot signal, where the first pilot signal is a pilot signal sent by the second network device in the system; Determining, by the signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device, the second network device to the first network device Between the channel information, the first terminal device includes power and/or phase of the first pilot signal transmitted by the second network device.

Specifically, the first terminal device includes power and/or phase of the first pilot signal of the second terminal device. The second network device sends a first pilot signal in the system, and the first network device in the system measures the first pilot signal sent by the second network device, and the first network device passes the receiving channel in the corresponding time-frequency resource. Receiving a first pilot signal of the second network device, measuring the power and/or phase of the first pilot signal, according to the measured signal power and/or phase of the first pilot signal, and the second network device The power and/or phase of the transmitted first pilot signal obtains channel information of the first network device to the second network device.

Therefore, the interference management of the cross-link is facilitated by measuring the channel information of the cross-link interference channel between the plurality of network devices in the TDD system.

Optionally, the method 200 further includes: measuring the signal power and/or phase of the first pilot signal, comprising: measuring signal power and/or phase of the first pilot signal according to the measurement map.

It should be understood that the method 200 further includes that the first network device sends request information to the second network device, where the request information is used to request the second network device to send the first pilot signal, where the first network device measures The signal power and/or phase of the first pilot signal.

Optionally, the measuring, according to the measurement spectrum, the signal power and/or phase of the first pilot signal, including: searching when the measurement spectrum includes measuring a second time period of the first pilot signal The second time period; measuring signal power and/or phase of the first pilot signal during the second time period.

Specifically, the measurement map includes a second time period in which the first network device receives the first pilot signal, and the second network device sends the first pilot signal according to the measurement map, where the first network device is configured according to the measurement map. Receiving the first pilot signal. The first network device obtains the power and/or phase information of the first pilot signal sent by the second network device, and measures the power and/or phase of the second pilot signal to obtain the second network device to the first network device. Channel information.

It should be understood that the power and/or phase information of the first pilot signal transmitted by the second network device may be included in the measurement map.

It should be understood that the second network device may be other network devices than the first network device within the TDD system. As shown in FIG. 3, FIG. 3 is a schematic block diagram of a measurement map of transmission and measurement pilot signals in accordance with the present application. In FIG. 3, the first network device is the network device 1, and the second network device is the network device 2 and the network device 3. When the network device 1 transmits the pilot signal, the network device 2 and the network device 3 measure the pilot signal. When the network device 2 transmits the pilot signal, the network device 1 and the network device 3 measure the pilot signal, and when the network device 3 transmits the pilot signal, the network device 1 and the network device 2 measure the pilot signal.

It should be understood that, in FIG. 3 is only an example, under the TDD system, a plurality of network devices may also be included.

Optionally, the measuring, according to the measurement spectrum, the signal power and/or phase of the first pilot signal, including: when the measurement spectrum includes the second network device sending the first pilot signal Determining, according to the physical distance between the first network device and/or the second network device, a transmission time of the signal sent by the first terminal device to the second terminal device; Determining, by the third time period and the transmission time, a fourth time period in which the first network device measures the first pilot signal.

Specifically, in the TDD system, time synchronization between network devices, but since electromagnetic waves travel from one network device to another network device takes a certain time, a propagation delay occurs, and thus the pilot signal arrives at the receiving side for a certain period of time. The delay error, that is, when the second network device sends the first pilot signal, the first network device cannot immediately receive the first pilot signal sent by the second network device. As shown in FIG. 4, FIG. 4 is a schematic block diagram of determining a measurement time in accordance with the present application. In FIG. 4, the network device 1 transmits a signal to the network device 2 at time T1, but since it takes a certain time for electromagnetic waves to propagate from one network device to another, the network device 2 cannot receive the network device 1 at time T1. The signal sent. The pilot signal arrives at the receiving side with a certain delay error TA. Since the network device is synchronized in time in the TDD system, the network device 2 receives the pilot signal transmitted by the network device 1 at the time T2 after the delay of the TA at the time T1. The delay error TA is determined according to the physical distance of the network device 1 to the network device 2 and/or the electromagnetic wave propagation speed. For example, if the geographical distance between the network device 1 and/or the network device 2 is D, then TA is D/c (c is the electromagnetic wave propagation speed).

Optionally, the measurement map includes a time period in which each network device in the system transmits a pilot signal, and a time period in which each of the network devices measures the pilot signal.

Specifically, each of the network devices in the TDD system stores a measurement spectrum, where the measurement spectrum includes a time period in which each network device in the system transmits a pilot signal and a time when each network device measures a pilot signal. segment. The measurement map can also be in the form of the following table, as shown in Table 1. In Table 1, the time at which three network devices within the system transmit and measure pilot signals is shown. And the measurement map further includes power and/or phase information of the pilot signal corresponding to each terminal device.

Table 1 shows the form of a measurement map

网络设备标识Network device identification	T₁ T ₁	T₂ T ₂	T₃ T ₃
11	TT	RR	RR
22	RR	TT	RR
33	RR	RR	TT

Wherein, T represents the transmission of the pilot signal, and R represents the measurement pilot signal. When the measurement spectrum is in the manner described in Table 1, the network device needs to increase the delay time period TA during the measurement, and then measure the pilot signal.

As shown in table 2. In Table 2, the time at which three network devices within the system transmit and measure pilot signals is shown. And the measurement map further includes power and/or phase information of the pilot signal corresponding to each terminal device. The time when the network device in Table 2 measures the pilot signal has increased the delay time period TA, and therefore, the network device directly measures the pilot signal according to the measurement time.

Table 2 shows the form of another measurement map

Where T represents the transmission of the pilot signal and R represents the measurement of the pilot signal.

Optionally, the method further includes: the first network device receiving the measurement map; or the first network device determining the measurement map, and transmitting the measurement map to a network device other than the first network device in the system .

Specifically, in the TDD system, the measurement map is determined by the first network device, that is, the first network device presets a time for each network device in the TDD system to send a pilot signal, and each network device Measuring a time of a pilot signal sent by another network device, and transmitting the measurement map to other network devices in the TDD system; or other network devices in the TDD system determining the measurement spectrum, the first network device receiving the measurement map .

FIG. 5 is a schematic flow diagram of a method 300 of wireless communication in accordance with the present application. The method 300 is applied to a time division duplex system, in which a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource. As shown in FIG. 5, the method 300 includes the following.

Step 310: The first network device measures signal power and/or signal phase of the first pilot signal, where the first pilot signal is a pilot signal sent by the second network device in the system.

Step 320: The first network device determines the second according to the measured signal power and/or signal phase of the first pilot signal and the power and/or phase of the first pilot signal sent by the second network device. Channel information between the network device and the first network device, the first terminal device including power and/or phase of the first pilot signal transmitted by the second network device.

Therefore, according to the present application, the first network device measures the signal power and/or phase of the first pilot signal and the second network device by measuring the signal power and/or phase of the first pilot signal. Comparing the power and/or phase of a pilot signal, determining the channel information between the second network device and the first network device is advantageous for subsequently using some means to reduce interference of the cross link according to the channel information.

It should be understood that, in step 310, the specific manner in which the first network device measures the signal power and/or the signal phase of the first pilot signal may refer to corresponding steps in the method 200. To avoid repetition, details are not described herein again.

FIG. 6 is a schematic block diagram of a network device 400 in accordance with the present application. The network device is a first network device, and the network device is applied to a time division duplex system, and each of the network devices in the system dynamically allocates the system bandwidth to an uplink resource or a downlink resource, as shown in FIG. The network device 400 includes:

The measuring module 410 is configured to measure a signal strength in the system bandwidth in a first time period, and the network device has no data transmission in the first time period;

The determining module 420 is configured to determine, according to the measured signal strength, an interference strength generated by another network device in the system to send a wireless signal.

Optionally, the determining module is specifically configured to: determine, according to the situation that the first network device schedules the terminal device, that the first network device does not have data transmission in a first time period, where the terminal device is in the first Within the coverage of a network device.

Optionally, the measuring module is further configured to: measure a signal power and/or a phase of the first pilot signal, where the first pilot signal is a pilot signal sent by a second network device in the system;

The determining module is further configured to: determine, according to the measured signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device Channel information between the second network device and the first network device, where the first terminal device includes power and/or phase of the first pilot signal sent by the second network device.

Optionally, the measuring module is specifically configured to: measure a signal power and/or a phase of the first pilot signal according to the measurement spectrum.

Optionally, the measuring module is specifically configured to: when the measurement spectrum includes measuring a second time period of the first pilot signal, searching for the second time period; and measuring the second time period The signal power and/or phase of the first pilot signal.

Optionally, the measuring module is specifically configured to: when the measurement spectrum includes the third time period in which the second network device sends the first pilot signal, according to the first network device and/or Determining a physical distance between the second network devices, determining a transmission time of the signal sent by the first terminal device to the second terminal device; determining the first according to the third time period and the transmission time The network device measures a fourth time period of the first pilot signal.

Optionally, the network device further includes: an acquiring module, configured to acquire a fifth time period of the measurement spectrum, where the fifth time period is a time for the first network device to send a second pilot signal; The network device further includes a sending module, configured to send, according to the fifth time period, a second pilot signal, where the network device in the system except the first network device measures the Two pilot signals.

Optionally, the measurement map comprises a time spectrum of each of the network devices in the system transmitting a pilot signal, and a time spectrum of each of the network devices measuring the pilot signal.

Optionally, the network device further includes a receiving module, where the receiving module is configured to receive the measurement map; or the determining module determines the measurement map, and the sending module sends the measurement module to the system A network device other than the network device transmits the measurement map. .

The foregoing network device 400 corresponds to the first network device in the embodiment of the method 200, and the corresponding steps are performed by the corresponding module. For details, refer to the corresponding method embodiment.

It should be understood that the foregoing network device 400 may also perform corresponding steps in the embodiment of the method 300, and the corresponding steps are performed by the corresponding modules, and specific reference may be made to the corresponding method embodiments.

FIG. 7 shows a schematic block diagram of a communication device 500 provided by the present application, the communication device 500 comprising:

a memory 510, configured to store a program, where the program includes a code;

The transceiver 520 is configured to communicate with other devices;

The processor 530 is configured to execute program code in the memory 510.

Optionally, when the code is executed, the processor 530 may implement various operations of the method 200 or the method 300. For brevity, no further details are provided herein. At this time, the communication device 500 is the first network device. The transceiver 520 is configured to perform specific signal transceiving under the driving of the processor 530. The transceiver may include at least one of the following: an interface circuit, a transmitter, and a receiver, respectively performing the steps of the transmitting module and the receiving module.

The present application also provides a chip system comprising: at least one processor for executing stored instructions to enable the network device to perform operations of a network device corresponding to the above method.

The application also provides a computer program product comprising instructions, when executed, such that the network device can perform operations of a network device corresponding to the method described above.

The present application also provides a computer readable medium storing program code, when the computer program code is run on a computer, causing the first network device to perform the first aspect or the first Any optional implementation of the aspect, and the method of any of the alternative aspects of the second aspect or the second aspect.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. These functions are Hardware or software implementation depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A method for wireless communication, the method being applied to a time division duplex system, wherein a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource, the method by the first network device Execution, which is characterized by:

Determining that the first network device has no data transmission during the first time period;

Measuring a signal strength within the system bandwidth during the first time period;

The interference strength generated by the other network devices in the system to transmit the wireless signal is determined according to the measured signal strength.
The method according to claim 1, wherein the determining that the first network device has no data transmission during the first time period comprises:

Determining, according to the situation that the first network device schedules the terminal device, that the first network device has no data transmission in a first time period, and the terminal device is in a coverage range of the first network device.
The method according to claim 1 or 2, wherein the first time period is at least one orthogonal frequency division multiplexing symbol.
The method according to any one of claims 1 to 3, further comprising:

Measuring a signal power and/or phase of the first pilot signal, the first pilot signal being a pilot signal transmitted by a second network device in the system;

Determining, according to the measured signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device, determining the second network device to the Channel information between network devices, the first terminal device including power and/or phase of a first pilot signal transmitted by the second network device.
The method according to claim 4, wherein said measuring a signal power and/or phase of the first pilot signal comprises:

The signal power and/or phase of the first pilot signal is measured based on the measurement map.
The method according to claim 5, wherein the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises:

When the measurement spectrum includes measuring the second time period of the first pilot signal, searching for the second time period;

The signal power and/or phase of the first pilot signal is measured during the second time period.
The method according to claim 5, wherein the measuring the signal power and/or phase of the first pilot signal according to the measurement map comprises:

Determining, according to a physical distance between the first network device and/or the second network device, when the measurement spectrum includes a third time period in which the second network device sends the first pilot signal a transmission time of the signal sent by the first terminal device to the second terminal device;

Determining, according to the third time period and the transmission time, a fourth time period in which the first network device measures the first pilot signal.
The method according to any one of claims 5 to 7, wherein the method further comprises:

Acquiring a fifth time period of the measurement spectrum, where the fifth time period is a time for the first network device to send the second pilot signal;

And transmitting, according to the fifth time period, a second pilot signal, used by a network device other than the first network device in the system to measure the second pilot signal.
The method according to any one of claims 5 to 8, wherein the measurement map comprises a time period in which each network device in the system transmits a pilot signal, and the measurement guide of each of the network devices The time period of the frequency signal.
The method of claim 9 wherein the method further comprises:

Receiving, by the first network device, the measurement map; or

The first network device determines the measurement map and transmits the measurement map to a network device other than the first network device in the system.
A network device, the method is applied to a time division duplex system, where a plurality of network devices in the system dynamically allocate the system bandwidth as an uplink resource or a downlink resource, where the network device is a first network device, It is characterized by including:

a determining module, configured to determine that the first network device has no data transmission during the first time period;

a measuring module, configured to measure a signal strength within the system bandwidth during the first time period;

The determining module is further configured to determine, according to the measured signal strength, an interference strength generated by another network device in the system to send a wireless signal.
The network device according to claim 11, wherein the determining module is specifically configured to:

Determining, according to the situation that the first network device schedules the terminal device, that the first network device has no data transmission in a first time period, and the terminal device is in a coverage range of the first network device.
The network device according to claim 11 or 12, wherein the first time period is at least one orthogonal frequency division multiplexing symbol.
The network device according to any one of claims 11 to 13, wherein the measurement module is further configured to:

Measuring a signal power and/or phase of the first pilot signal, the first pilot signal being a pilot signal transmitted by a second network device in the system;

The determining module is further configured to:

Determining, according to the measured signal power and/or phase of the first pilot signal, and the power and/or phase of the first pilot signal sent by the second network device, determining the second network device to the Channel information between network devices, the first terminal device including power and/or phase of a first pilot signal transmitted by the second network device.
The network device according to claim 14, wherein the measurement module is specifically configured to:

The signal power and/or phase of the first pilot signal is measured based on the measurement map.
The network device according to claim 15, wherein the measurement module is specifically configured to:

When the measurement spectrum includes measuring the second time period of the first pilot signal, searching for the second time period;

The signal power and/or phase of the first pilot signal is measured during the second time period.
The network device according to claim 15, wherein the measurement module is specifically configured to:

Determining, according to a physical distance between the first network device and/or the second network device, when the measurement spectrum includes a third time period in which the second network device sends the first pilot signal a transmission time of the signal sent by the first terminal device to the second terminal device;

Determining, according to the third time period and the transmission time, that the first network device measures the first pilot signal The fourth time period.
The network device according to any one of claims 15 to 17, wherein the network device further includes an acquiring module, configured to acquire a fifth time period of the measurement spectrum, where the fifth time period is Decoding a time when the first network device sends the second pilot signal;

The network device further includes a sending module, where the sending module is configured to send, according to the fifth time period, a second pilot signal, where the network device measurement station except the first network device is used in the system. The second pilot signal is described.
The network device according to any one of claims 15 to 18, wherein the measurement map comprises a time period in which each network device in the system transmits a pilot signal, and the measurement by each of the network devices The time period of the pilot signal.
The network device according to claim 19, wherein the network device further comprises:

a receiving module, configured to receive the measurement map; or

The determining module is specifically configured to determine the measurement map, and the sending module sends the measurement map to a network device other than the first network device in the system.
A chip system, comprising: at least one processor, the at least one processor for executing stored instructions to cause a network device to perform the operations of the method of any one of claims 1 to 10.
A computer program product, characterized in that the computer program product comprises instructions which, when executed, cause a network device to perform the operation of the method according to any one of claims 1 to 10.