WO2019148334A1

WO2019148334A1 - Power measurement method and device

Info

Publication number: WO2019148334A1
Application number: PCT/CN2018/074613
Authority: WO
Inventors: 刘恒进; 李启明; 金哲
Original assignee: 华为技术有限公司
Priority date: 2018-01-30
Filing date: 2018-01-30
Publication date: 2019-08-08
Also published as: CN111512664B; CN111512664A

Abstract

A power measurement method comprises: a network device sending first information, the first information indicating a first period, the first period being a period during which a transmission port of a first signal changes, or the first period being a minimum common multiple of a period during which a transmission port of the first signal changes and a period during which an initial phase of the first signal changes, the first signal being used for downlink reception power measurement; the network device determining the first signal; the network device transmitting a plurality of first signals by means of the same set of transmission ports at the same location within a plurality of first periods. The embodiments of the present invention can improve the accuracy of downlink reception power measurement.

Description

Power measurement method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a power measurement method and device.

Background technique

In a long term evolution (LTE) communication system, a terminal device may determine a received power of a reference signal by radio resource control (RRC) measurement, and perform cell selection and cell weight according to the measured received power. Selection and power control, etc. In the process of receiving power measurement, the base station may carry multiple reference signals on the time-frequency resource, and the terminal device may receive the multiple reference signals and obtain an average value of the received multiple reference signals to obtain the reference signal. power.

In a cellular-based narrowband internet of things (NB-IoT) system, a terminal device similarly can receive a plurality of narrowband reference signals (NRS) and power the received multiple NRSs. The average value is further selected based on the average of the measured powers, cell selection, cell reselection, power control, and the like. For the NB-IoT system, the terminal device blindly detects these NRSs with low measurement accuracy.

Summary of the invention

The embodiment of the present application discloses a power measurement method and device, which can improve the accuracy of downlink receiving power measurement.

In a first aspect, the embodiment of the present application provides a power measurement method, including: sending, by a network device, first information, where the first information indicates a first period, where the first period is a period in which a transmit port of the first signal changes, Or the first period is a least common multiple of a period in which the transmit port of the first signal changes and a period in which the initial phase of the first signal changes, wherein the first signal is used for downlink received power measurement; The network device determines the first signal; the network device transmits a plurality of the first signals through the same set of transmit ports at the same location in the plurality of the first periods.

In the prior art, blind measurement of NRS by a terminal device results in low measurement accuracy. One reason for this problem is that the transmission port used by the base station to transmit the NRS often changes. The network device in the embodiment of the present application sends the first information, where the first information indicates a first period, and the network device sends the multiple first signals by using the same group of transmitting ports in the same location in the multiple of the first periods. The terminal device is capable of receiving a plurality of the first signals transmitted by the same group of transmitting ports, thereby ensuring measurement accuracy.

In addition, for the prior art, the carrier bandwidth in the NB-IoT system is limited, and only one resource block (RB) is occupied. Within a certain period of time, the number of NRSs carried by the base station on the time-frequency resources is limited, and the number of resource elements (REs) occupied by the NRS is small, so that the number of RE samples for receiving power measurement by the terminal device is small, so that downlink receiving is performed. The accuracy of the power measurement is low. Further, the first signal selected for the downlink received power measurement in the embodiment of the present application may be a signal that occupies a large number of REs in the time-frequency resource in a certain period of time, for example, the NB-IoT system selects a larger number of occupied REs. The NSSS performs downlink receive power measurement. On the one hand, the number of samples of the power measurement can be increased, thereby improving the accuracy of the downlink received power measurement. On the other hand, since the physical channel changes in the time domain and the frequency domain, the accuracy of the downlink received power measurement is affected. Compared with the prior art, the REs occupied by the sampled NRS are distributed on the time-frequency resources. When the NSSS is used to measure the received power of the terminal device, the sampled RE is a continuous RE on the time-frequency resource, which can reduce the physical channel time domain and The influence of the frequency domain change on the received power measurement further improves the accuracy of the downlink received power measurement. On the other hand, the terminal device collects the average value of the first signal transmitted by the same group of transmitting ports according to the first period, and can reduce the receiving power measurement error caused by the power averaging when the transmitting port is not the same group. Improve the accuracy of downlink receive power measurement.

In one embodiment, the first period is a least common multiple of a period of a change of a transmit port of the first signal and a period of an initial phase change of the first signal, in a plurality of the first periods In the same location, the initial phase corresponding to the number of each of the same set of transmit ports is the same. The implementation of the above embodiments can not only reduce the downlink receiving power measurement error caused by power averaging when the transmitting ports are not the same group, but also reduce the first signal of different initial phases when coherently superimposing when performing the lower receiving power superposition. The measurement error caused by the cancellation can further improve the accuracy of the downlink received power measurement.

In an embodiment, the first information is information that carries the value of the first period, or the first information is that the first period in the first cell and the second period in the second cell are carried. Or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates the second in the second cell. a period of the difference from the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell; The second period is a period in which the transmitting port of the first signal changes in the second cell, or the second period is a period in which the transmitting port of the first signal changes in the second cell The least common multiple of the period of the initial phase change of a signal. The first period of the first cell and the second period of the second cell are carried by the same information, and the first period of the serving cell and the second period of the neighboring cell can be notified to the terminal device only by the network device that covers the serving cell. , reducing the number of network devices that communicate with the terminal device during the notification period. Thereby, the communication generated by the terminal device due to the connection process of the network device that performs communication is reduced, the processing resources of the terminal device are saved, and the power consumption of the terminal device is saved. In addition, the first period of the first cell and the second period of the second cell are carried in the same information and sent to the terminal device, which can reduce the signaling process for the network device and the terminal device to communicate, and save signaling overhead.

In an embodiment, the method further includes: the network device sends the second information, where the second information is information carrying the second period in the second cell, or the second information is carrying the first partial The first offset indicates the difference between the second period in the second cell and the first period in the first cell; the second period is the second period a period in which the transmission port of the first signal changes, or the second period is a period in which the transmission port of the first signal changes in the second cell and a period in which the initial phase of the first signal changes a common multiple; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell. The first period of the serving cell and the second period of the neighboring cell can be notified only by the network device covering the serving cell, and the number of network devices that communicate with the terminal device during the notification period can be reduced, and the terminal device is reduced in communication. The connection process of the network device generates communication, saves processing resources of the terminal device, and saves power consumption of the terminal device.

Specifically, the first offset may also be a ratio of the second period in the second cell to the first period in the first cell.

Specifically, the second information may be information used to indicate whether the second period in the second cell is the same as the first period in the first cell.

In one embodiment, the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively represent N groups of the first signal. a transmit port and/or an initial phase; N is a positive integer greater than or equal to 1; the first period is equal to N*t, where t is a transmit period of the first signal; Transmitting the plurality of the first signals by the same group of transmitting ports in the same location in a period, including: the network device passing the same group of transmitting ports in the same location in the plurality of the first periods according to the codebook set according to the codebook set Transmitting a plurality of the first signals.

In one embodiment, the first signal is a narrowband secondary synchronization signal NSSS. On the one hand, the terminal device can sample more REs for receiving power measurement within a certain period of time, so that the accuracy of downlink receiving power measurement is higher. On the other hand, when the NSSS is used to measure the received power of the terminal device, the sampled RE is a continuous RE on the time-frequency resource, which can reduce the influence of the change of the physical channel in the time domain and the frequency domain on the received power measurement, and further improve the downlink receiving. The accuracy of the power measurement.

In a second aspect, the embodiment of the present application provides a power measurement method, including: receiving, by a terminal device, first information, where the first information indicates a first period, where the first period is a period in which a transmit port of the first signal changes, Or the first period is a least common multiple of a period in which the transmit port of the first signal changes and a period in which the initial phase of the first signal changes, wherein the first signal is used for downlink received power measurement; Receiving, by the terminal device, a plurality of the first signals of the same group of transmitting ports at the same position in the plurality of the first periods; and determining, by the terminal device, the receiving of the first signal according to the plurality of first signals power.

The embodiment of the present application is implemented to enable the terminal device to receive a plurality of the first signals transmitted by the same group of transmitting ports, thereby alleviating the problem that the measurement accuracy caused by frequent changes of the transmitting port is low, and the measurement accuracy can be ensured.

In addition, for the prior art, the carrier bandwidth in the NB-IoT system is limited, occupying only one RB. Within a certain period of time, the number of NRSs carried by the base station on the time-frequency resources is limited, and the number of REs occupied by the NRS is small, so that the number of RE samples for receiving power measurement by the terminal device is small, and the accuracy of downlink received power measurement is low. Further, the first signal selected for the downlink received power measurement in the embodiment of the present application may be a signal that occupies a large number of REs in the time-frequency resource in a certain period of time, for example, the NB-IoT system selects a larger number of occupied REs. The NSSS performs downlink receive power measurement. On the one hand, the number of samples of the power measurement can be increased, thereby improving the accuracy of the downlink received power measurement. On the other hand, since the physical channel changes in the time domain and the frequency domain, the accuracy of the downlink received power measurement is affected. Compared with the prior art, the REs occupied by the sampled NRS are distributed on the time-frequency resources. When the NSSS is used to measure the received power of the terminal device, the sampled RE is a continuous RE on the time-frequency resource, which can reduce the physical channel time domain and The influence of the frequency domain change on the received power measurement further improves the accuracy of the downlink received power measurement. On the other hand, the terminal device collects the average value of the first signal transmitted by the same group of transmitting ports according to the first period, and can reduce the receiving power measurement error caused by the power averaging when the transmitting port is not the same group. Improve the accuracy of downlink receive power measurement.

In an embodiment, the first information is information that carries the value of the first period, or the first information is that the first period in the first cell and the second in the second cell are carried. The information of the second period, or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates the a difference between the second period and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell with the first cell; The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the The least common multiple of the period of the initial phase change of the first signal.

In an embodiment, the first information is information that carries the first period in the first cell and the second period in the second cell, or the first information is After the information about the first period and the first offset in a cell, after the terminal device receives the first information, the method further includes: determining, by the terminal device, the second cell according to the first information And determining, by the terminal device, the plurality of the first signals of the same group of transmitting ports of the second cell in the same location in the plurality of the second periods; the terminal The device determines, according to the plurality of first signals, a received power of the first signal in the second cell. The first period of the first cell and the second period of the second cell are carried by the same information, and the first period of the serving cell and the second part of the neighboring cell can be notified to the terminal device only by the network device 1 covering the serving cell. The period, which reduces the number of network devices that communicate with the terminal device during the notification period. Thereby, the communication generated by the terminal device due to the connection process of the network device that performs communication is reduced, the processing resources of the terminal device are saved, and the power consumption of the terminal device is saved. In addition, the first period of the first cell and the second period of the second cell are carried in the same information and sent to the terminal device, which can reduce the signaling process for the network device and the terminal device to communicate, and save signaling overhead.

In an embodiment, after receiving the first information, the terminal device further includes: determining, by the terminal device, a value of the first period according to the first information; the terminal device is in the multiple of the first period And receiving, by the same location, the plurality of the first signals of the same group of transmitting ports, including: the terminal device receiving the same group of the first group of transmitting ports in the same location in the first period Determining the received power of the first signal according to the multiple first signals, the terminal device determining, according to the multiple first signals, the second cell The received power of the first signal.

In an embodiment, the method further includes: the terminal device receiving the second information, where the second information is information carrying the second period in the second cell, or the second information is carrying An offset amount information; the first offset amount represents a difference between the second period in the second cell and the first period in the first cell; the second period is the a period in which the transmit port of the first signal changes in the second cell, or the second period is a period in which the transmit port of the first signal changes in the second cell and a period in which the initial phase of the first signal changes a least common multiple; the first cell is a serving cell of the terminal device, the second cell is a neighboring cell of the first cell; and the terminal device is in the plurality of the first according to the second period Receiving, by the same location in the second period, a plurality of the first signals of the same group of transmitting ports of the second cell; the terminal device determining, according to the multiple first signals, the first in the second cell The received power of the signal. The first period of the serving cell and the second period of the neighboring cell can be notified only by the network device covering the serving cell, and the number of network devices that communicate with the terminal device during the notification period can be reduced, and the terminal device is reduced in communication. The connection process of the network device generates communication, saves processing resources of the terminal device, and saves power consumption of the terminal device.

Specifically, the second information may further be information used to indicate whether the second period in the second cell is the same as the first period in the first cell.

In one embodiment, the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively represent N groups of the first signal. a transmitting port and/or an initial phase; N is a positive integer greater than or equal to 1; after the terminal device receives the first information, the method further includes: the terminal device according to the number of indexes of the codebook in the codebook set N. determining the first period, wherein the first period is equal to N*t, where t is a transmission period of the first signal.

In an embodiment, the method further includes: in a plurality of the first periods, the terminal device receives a plurality of the first signals represented by an index of a first codebook; and the first codebook The index is an index of a plurality of codebooks associated with the first signal. In the first period, the terminal device may receive the first signal represented by the index of the same codebook according to the codebook set. Then, the number of the received first signals can be increased, and the number of REs that the terminal device samples to perform the received power measurement is increased, so that the accuracy of the downlink received power measurement can be improved.

In a third aspect, an embodiment of the present application provides a network device, including a processor and a memory, where the memory is used to store program instructions, and the processor is configured to invoke the program instructions to perform the first aspect or the first aspect. A power measurement method provided by a possible embodiment.

In a fourth aspect, an embodiment of the present application provides a communication device, including a processor and a memory, where the memory is used to store program instructions, and the processor is configured to invoke the program instructions to perform the second aspect or the second aspect. A power measurement method provided by a possible embodiment.

In a fifth aspect, an embodiment of the present application provides a network device, where the device includes a module or unit for performing the power measurement method provided by the first aspect or any of the possible embodiments of the first aspect.

In a sixth aspect, the embodiment of the present application provides a communication device, where the device includes a module or unit for performing the power measurement method provided by the second aspect or any of the possible embodiments of the second aspect.

In a seventh aspect, an embodiment of the present invention provides a chip system, where the chip system includes at least one processor, a memory, and an interface circuit, the memory, the interface circuit, and the at least one processor are interconnected by a line, and the at least one memory is stored. There is a program instruction; when the program instruction is executed by the processor, the method described in the first aspect or any of the possible embodiments of the first aspect is implemented.

In an eighth aspect, an embodiment of the present invention provides a chip system, where the chip system includes at least one processor, a memory, and an interface circuit, the memory, the interface circuit, and the at least one processor are interconnected by a line, and the at least one memory is stored. There is a program instruction; when the program instruction is executed by the processor, the method described in any one of the possible embodiments of the second aspect or the second aspect is implemented.

A ninth aspect, an embodiment of the present invention provides a computer readable storage medium, where the program instructions are stored, and when the program instructions are executed by a processor, the first aspect or the first aspect may be implemented. The method described in the embodiments.

According to a tenth aspect, an embodiment of the present invention provides a computer readable storage medium, where the program instructions are stored, and when the program instructions are executed by a processor, the second aspect or the second aspect may be implemented. The method described in the embodiments.

In an eleventh aspect, an embodiment of the present invention provides a computer program product, when the computer program product is run by a processor, implementing the method described in the first aspect or any one of the possible embodiments.

In a twelfth aspect, the embodiment of the present invention provides a computer program product, which when the computer program product is run by a processor, implements the method described in any one of the second aspect or the second aspect.

A thirteenth aspect, the embodiment of the present invention provides a power measurement system, including: a network device and a terminal device, where: the network device establishes a communication connection with the terminal device, where the network device is configured to perform the first aspect or The power measurement method provided by any of the possible embodiments of the first aspect; the terminal device is configured to perform the power measurement method provided by the second aspect or any of the possible embodiments of the second aspect.

Specifically, the network device may be the network device described in the third aspect or the fifth aspect. The terminal device may be the terminal device described in the fourth aspect or the sixth aspect.

DRAWINGS

The drawings used in the embodiments of the present application are described below.

1 is a schematic structural diagram of a network system according to an embodiment of the present application;

2 is a schematic structural diagram of a terminal device 10 according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a network device 20 according to an embodiment of the present application;

4 is a schematic diagram of a downlink receiving power measurement principle provided by an embodiment of the present application;

FIG. 5 is a schematic flowchart of a power measurement method according to an embodiment of the present disclosure;

6 is a schematic diagram of a first cycle provided by an embodiment of the present application;

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

FIG. 8 is a schematic diagram of a relationship between a codebook set and a first period according to an embodiment of the present application;

FIG. 9 is a schematic flowchart diagram of another power measurement method according to an embodiment of the present disclosure;

FIG. 10 is a schematic flowchart diagram of still another power measurement method according to an embodiment of the present application;

FIG. 11 is a schematic structural diagram of another network device 20 according to an embodiment of the present application;

FIG. 12 is a schematic structural diagram of another terminal device 10 according to an embodiment of the present application.

Detailed ways

The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention. The terms used in the embodiments of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application.

Referring to FIG. 1, FIG. 1 is a schematic structural diagram of a network system according to an embodiment of the present application. The network system 100 can be an LTE communication system, such as an NB-IoT system. The network system may also be a global system for mobile communication (GSM), a universal mobile telecommunications system (UMTS), a code division multiple access (CDMA) system, and an LTE communication. The system, the fifth generation mobile communication system (5-Generation, 5G), or the new network system that appears in the future, is not limited in this embodiment. The embodiment of the present application is described by taking the NB-IoT system as an example. It can be understood that the embodiment of the present application can also be extended to other communication systems.

As shown in FIG. 1, the network system 100 includes a first device 10 and a second device 20. The first device 10 and the second device 20 can establish a communication connection and perform data interaction through the communication connection. The embodiment of the present application is described by taking the first device 10 as a terminal device and the second device 20 as a network device. It can be understood that the embodiment of the present application can be extended to the case where the first device 10 is a network device, and the second device 20 is a network device. The embodiment of the present application can be extended to the first device 10 as a terminal device and a second device. 20 is a terminal device, and the embodiment of the present application may be extended to the case where the first device 10 is a network device, and the second device 20 is a terminal device. In the method flow and the device involved in the embodiments of the present application, the first device may be used. It is a network device or a terminal device, and the second device may be a network device and a terminal device. This embodiment of the present application does not limit this.

The terminal device 10 may be a mobile user equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a user terminal, or a user agent. The access terminal may be a cellular telephone, a handheld device with wireless communication capabilities, a computing device or an in-vehicle device, a wearable device, a terminal in a 5G system, or a terminal in a publicly evolved public land mobile network (PLMN). Wait. Specifically, the terminal device 20 may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and an industrial device. Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical surgery, wireless terminal in smart grid, transportation safety A wireless terminal in a wireless terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.

The network device 20 may be a base station, and the base station may be used to communicate with one or more terminal devices 20, or may be used to communicate with one or more base stations having partial terminal device functions (such as a macro base station and a micro base station, such as Incoming point, communication between). The base station may be a base transceiver station (BTS) in a time division synchronous code division multiple access (TD-SCDMA) system, or may be an evolved base station in an LTE system (evolutional node B) , eNB), or a fifth-generation (5th-Generation, 5G) mobile communication system, a base station in a new radio (NR) system. In addition, the base station may also be an access point (AP), a transmission and receiving point (TRP), a central unit (CU), or other network entity, and may include the functions of the above network entities. Some or all features. In the future communication system, the network device 20 may have other names, which are not specifically limited in the embodiment of the present invention.

In the communication system 100, an area covered by the network device 20 or an area covered by one or more sector antennas on the network device 20 may be referred to as a cell. In this area, as shown in FIG. 1, the terminal device 10 can communicate with the network device 20 through a wireless channel. A cell that implements communication between the terminal device 10 and the network device 20 may be referred to as a serving cell of the terminal device 10. Generally, the serving cell of the terminal device 10 may be adjacent to multiple neighboring cells. The terminal device 10 often needs to perform RRM measurement continuously to implement cell selection, cell reselection, power control, etc., to perform radio resource control reasonably. The cell selection refers to the terminal device 10 selecting a suitable cell to camp. Cell reselection means that the terminal device 10 selects a better serving cell than the current serving cell. The power control mainly refers to the terminal device 10 controlling the uplink transmit power to ensure the quality of the data transmitted by the terminal device 10, and to minimize the interference to other terminal devices in the communication system 100.

As shown in FIG. 1, in the serving cell covered by the network device 20, the terminal device 10 can communicate with the network device 20, and the terminal device 10 can perform measurement of the received power on the serving cell covered by the network device 20. The terminal device 10 can also measure the received power of the cell neighboring area A and the neighboring area B adjacent to the serving cell. In the embodiment of the present application, the neighboring area A and the neighboring area B may be covered by a network device different from the network device 20. For example, the neighboring area A is covered by the network device 21 (not shown in FIG. 1). B is covered by network device 22 (not shown in FIG. 1), and network device 20, network device 21, and network device 22 are all different network devices. In addition, with the evolution of the network system, in the embodiment of the present application, the neighboring area A, the neighboring area B, and the serving cell may also be the cells that are all covered by the network device 20, which is not limited in this embodiment.

The specific technologies and specific device modes adopted by the terminal device 10 and the network device 20 are not limited in this embodiment. The network system shown in FIG. 1 is only for the purpose of more clearly explaining the technical solutions of the embodiments of the present application, and does not constitute a limitation on the embodiments of the present application. Those skilled in the art may know that with the evolution of the network system and the new business scenarios. It should be noted that the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems. It is to be understood that the present application is also applicable to a similar service scenario, which is not limited in this embodiment of the present application.

Please refer to FIG. 2. FIG. 2 is a schematic structural diagram of a terminal device 10 according to an embodiment of the present application. As shown in FIG. 2, the terminal device 10 may include: one or more terminal processors 201, a memory 202, a communication interface 203, a receiver 205, a transmitter 206, a coupler 207, an antenna 208, a user interface 209, and inputs. The output module (including the audio input and output module 210, the key input module 211, the display 212, and the like). These components can be connected by bus 204 or other means, and FIG. 2 is exemplified by a bus connection. among them:

The communication interface 203 can be used for the terminal device 10 to communicate with other communication devices, such as network devices. Specifically, the network device may be the network device 20 shown in FIG. Specifically, the communication interface 203 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface. Not limited to the wireless communication interface, the terminal device 10 may be configured with a wired communication interface 203, such as a local access network (LAN) interface.

Transmitter 206 can be used to perform transmission processing, such as signal modulation, on signals output by terminal processor 201. Receiver 205 can be used to perform reception processing, such as signal demodulation, on the mobile communication signals received by antenna 208. In some embodiments of the present application, transmitter 206 and receiver 205 can be viewed as a wireless modem. In the terminal device 10, the number of the transmitter 206 and the receiver 205 may each be one or more. The antenna 208 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. The coupler 207 is configured to divide the mobile communication signal received by the antenna 208 into multiple channels and distribute it to a plurality of receivers 205.

In addition to the transmitter 206 and receiver 205 shown in FIG. 2, the terminal device 10 may also include other communication components such as a GPS module, a Bluetooth module, a wireless fidelity (Wi-Fi) module, and the like. The terminal device 10 can also support other wireless communication signals such as satellite signals, short wave signals, and the like, without being limited to the wireless communication signals described above. Not limited to wireless communication, the terminal device 10 may be configured with a wired network interface such as a LAN interface to support wired communication.

The input and output module can be used to implement the interaction between the terminal device 10 and the user/external environment, and can mainly include the audio input and output module 210, the key input module 211, the display 212, and the like. Specifically, the input and output module may further include: a camera, a touch screen, a sensor, and the like. The input and output modules communicate with the terminal processor 201 through the user interface 209.

Memory 202 is coupled to terminal processor 201 for storing various software programs and/or sets of instructions. In particular, memory 202 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices. The memory 202 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as ANDROID, IOS, WINDOWS, or LINUX. The memory 202 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices. The memory 202 can also store a user interface program, which can realistically display the content of the application through a graphical operation interface, and receive user control operations on the application through input controls such as menus, dialog boxes, and keys. .

In some embodiments of the present application, the memory 202 can be used to store an implementation of the power measurement method provided by one or more embodiments of the present application on the terminal device 10 side. For implementation of the power measurement method provided by one or more embodiments of the present application, please refer to the subsequent embodiments.

Terminal processor 201 can be used to read and execute computer readable instructions. Specifically, the terminal processor 201 can be used to invoke a program stored in the memory 212, for example, the implementation of the power measurement method provided by one or more embodiments of the present application on the terminal device 10 side, and execute the instructions contained in the program.

It can be understood that the terminal device 10 can be the terminal device 10 in the communication system 100 shown in FIG. 1, and can be implemented as a mobile device, a mobile station, a mobile unit, a wireless unit, a remote unit, and a user. Proxy, mobile client and more.

It should be noted that the terminal device 10 shown in FIG. 2 is only one implementation manner of the embodiment of the present application. In an actual application, the terminal device 10 may further include more or fewer components, which are not limited herein.

Referring to FIG. 3, FIG. 3 is a schematic structural diagram of a network device 20 according to an embodiment of the present application. As shown in FIG. 3, the network device 20 can include one or more network device processors 301, memory 302, communication interfaces 303, transmitters 305, receivers 306, couplers 307, and antennas 308. These components can be connected by bus 304 or other means, and FIG. 3 is exemplified by a bus connection. among them:

Communication interface 303 can be used by network device 20 to communicate with other communication devices, such as terminal devices or other network devices. Specifically, the terminal device may be the terminal device 10 shown in FIG. 2. Specifically, the communication interface 303 may be a Long Term Evolution (LTE) (4G) communication interface, or may be a 5G or a future communication interface of a new air interface. Not limited to the wireless communication interface, the network device 20 may also be configured with a wired communication interface 303 to support wired communication. For example, a backhaul link between one network device 20 and other network devices 20 may be a wired communication connection.

Transmitter 305 can be used to perform transmission processing, such as signal modulation, on signals output by network device processor 301. Receiver 306 can be used to perform reception processing on the mobile communication signals received by antenna 308. For example, signal demodulation. In some embodiments of the present application, transmitter 305 and receiver 306 can be viewed as a wireless modem. In the network device 20, the number of the transmitter 305 and the receiver 306 may each be one or more. The antenna 308 can be used to convert electromagnetic energy in a transmission line into electromagnetic waves in free space, or to convert electromagnetic waves in free space into electromagnetic energy in a transmission line. Coupler 307 can be used to divide the mobile pass signal into multiple channels and distribute it to multiple receivers 306.

Memory 302 is coupled to network device processor 301 for storing various software programs and/or sets of instructions. In particular, memory 302 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic disk storage devices, flash memory devices, or other non-volatile solid state storage devices. The memory 302 can store an operating system (hereinafter referred to as a system) such as an embedded operating system such as uCOS, VxWorks, or RTLinux. The memory 302 can also store a network communication program that can be used to communicate with one or more additional devices, one or more terminal devices, one or more network devices.

The network device processor 301 can be used to perform wireless channel management, implement call and communication link establishment and teardown, and provide cell handover control and the like for users in the control area. Specifically, the network device processor 301 may include: an administration module/communication module (AM/CM) (a center for voice exchange and information exchange), and a basic module (BM) (for Complete call processing, signaling processing, radio resource management, radio link management and circuit maintenance functions), code conversion and sub-multiplexer (TCSM) (for multiplexing demultiplexing and code conversion functions) )and many more.

In the embodiment of the present application, the network device processor 301 can be used to read and execute computer readable instructions. Specifically, the network device processor 301 can be used to invoke a program stored in the memory 302, for example, the implementation of the power measurement method provided by one or more embodiments of the present application on the network device 20 side, and execute the instructions included in the program. .

It can be understood that the network device 20 can be the network device 20 in the communication system 100 shown in FIG. 1, and can be implemented as a base transceiver station, a wireless transceiver, a basic service set (BSS), and an extended service set (ESS). NodeB, eNodeB, access point or TRP, etc.

It should be noted that the network device 20 shown in FIG. 3 is only one implementation of the embodiment of the present application. In actual applications, the network device 20 may further include more or fewer components, which are not limited herein.

In the NB-IoT system, the downlink received power measurement in the RRM measurement is mainly the measurement of the narrowband reference signal received power (NRSRP) by the terminal device 10 based on the NRS. The basic principle of the NRSRP measurement is that the terminal device 10 collects the received power of a plurality of NRS signals from the time-frequency resources, and obtains the average number of received powers of the obtained multiple NRS signals, that is, obtains the value of the NRSRP.

In the prior art, blind measurement of NRS by a terminal device results in low measurement accuracy. One reason for this problem is that the transmission port used by the base station to transmit the NRS often changes.

Based on the architecture diagram of the network system of FIG. 1 , the embodiment of the present application provides a power measurement method, which can improve the accuracy of downlink receive power measurement.

The embodiment of the present application may include: the network device may send information indicating the first period to the terminal device. The first period may be a period in which the transmitting port of the first signal changes, and the terminal device may receive the first signal transmitted by the same group of transmitting ports at the same position of the multiple first periods, and average the received first signal. value. The embodiment of the present application is implemented to enable the terminal device to receive a plurality of the first signals transmitted by the same group of transmitting ports, thereby alleviating the problem that the measurement accuracy caused by frequent changes of the transmitting port is low, and the measurement accuracy can be ensured.

In addition, for the prior art, the carrier bandwidth in the NB-IoT system is limited, occupying only one RB. Within a certain period of time, the number of NRSs carried by the base station on the time-frequency resources is limited, and the number of REs occupied by the NRS is small, so that the number of RE samples for receiving power measurement by the terminal device is small, and the accuracy of downlink received power measurement is low. Further, the first signal selected for the downlink received power measurement in the embodiment of the present application may be a signal that occupies a large number of REs in the time-frequency resource in a certain period of time, for example, the NB-IoT system selects a larger number of occupied REs. The narrowband secondary synchronization signal (NSSS) performs downlink receive power measurement. On the one hand, the number of samples of the power measurement can be increased, thereby improving the accuracy of the downlink received power measurement. On the other hand, since the physical channel changes in the time domain and the frequency domain, the accuracy of the downlink received power measurement is affected. Compared with the prior art, the REs occupied by the sampled NRS are distributed on the time-frequency resources. When the NSSS is used to measure the received power of the terminal device, the sampled RE is a continuous RE on the time-frequency resource, which can reduce the physical channel time domain and The influence of the frequency domain change on the received power measurement further improves the accuracy of the downlink received power measurement. On the other hand, the terminal device collects the average value of the first signal transmitted by the same group of transmitting ports according to the first period, and can reduce the receiving power measurement error caused by the power averaging when the transmitting port is not the same group. Improve the accuracy of downlink receive power measurement.

The first period may also be a least common multiple of a period in which the transmitting port of the first signal changes and a period in which the initial phase of the first signal changes, and the terminal device may receive the first transmission of the same group of transmitting ports at the same position of the plurality of first periods. signal.

Correspondingly, for the case where the first period is the least common multiple, in the same position in the plurality of the first periods, the initial phase corresponding to the number of each of the same group of transmitting ports is the same, that is, for the same group of transmitting ports. In each of the transmitting ports, the initial phase of the first signal transmitted by the same transmitting port is the same in the plurality of first periods. Therefore, not only can the downlink receiving power measurement error caused by power averaging be reduced when the transmitting ports are not the same group, but also the measurement caused by the cancellation of the first signal of different initial phases when coherently superimposing is performed when performing the lower receiving power superposition. The error can further improve the accuracy of the downlink received power measurement.

Wherein, a group of transmitting ports refers to one or more transmitting ports that simultaneously transmit the first signal during a first signal transmission period. A corresponding set of transmit ports in one transmit period may be the same as a corresponding set of transmit ports in another transmit period, or may be different, or may be partially identical. During one first signal transmission period, one or more transmission ports that simultaneously transmit the first signal may also be referred to as a transmission port group corresponding to the transmission period. The same group of transmitting ports means that one or more transmitting ports that transmit the first signal are identical in port number during a plurality of first signal transmission periods. For example, in one transmission period, the transmitting port transmitting the first signal is port 1 and port 2, and in another transmitting period, the transmitting port transmitting the first signal is also port 1 and port 2, then the two transmitting During the period, it can be said that it is the first signal transmitted by the same group of transmitting ports.

A group of transmitting ports may be all ports in the network device for performing the first signal transmission, or may be one or more of all the ports. For example, all ports in the network device that transmit the first signal are Port 1, Port 2, and Port 3. A group of transmitting ports may be port 1 and port 2, that is, during a transmission period of a first signal, port 1 and port 2 simultaneously transmit a first signal. If the transmitting port transmitting the first signal is port 1 and port 2 during the transmitting period of one first signal, the transmitting port transmitting the first signal is also port 1 and port 2 during the transmitting period of the other first signal, It can be said that during the transmission period of the two first signals, the same group of transmitting ports transmit the first signal.

In a group of transmitting ports corresponding to one transmitting period, all of the transmitting ports occupy the same time-frequency resources when transmitting the first signal to the terminal device, and when the terminal device receives the first signal on the same time-frequency resource, the receiving device receives the first signal. It is a fused signal of the first signal respectively transmitted by each transmitting port. The fused signal can be a signal strength superposition that takes into account the phase. When there is only one transmitting port in a group of transmitting ports, the first signal transmitted by the group of transmitting ports received by the terminal device is the first signal transmitted by the one transmitting port. When a plurality of transmitting ports are included in a group of transmitting ports, the first signal transmitted by the group of transmitting ports received by the terminal device is a superposition of the first signals respectively transmitted by the plurality of transmitting ports.

For example, please refer to FIG. 4. FIG. 4 is a schematic diagram of a downlink receiving power measurement principle provided by an embodiment of the present application. As shown in FIG. 4, the terminal device can perform measurement of received power using NSSS. The transmission period of the NSSS is 20 ms. During the transmission period, the time domain resource occupied by the NSSS is 1 subframe, that is, 1 ms. That is to say, every 20 ms, the terminal device can sample the received power of the signal on the time-frequency resource corresponding to the 1 ms duration to perform the received power measurement. As shown in FIG. 4, the solution provided by the prior art is scheme 2, where the terminal device receives power measurement using NRS, and only 8 REs in one subframe carry an NRS signal ("R" shown in FIG. 4). And the NRS signal does not occupy the RE in each subframe. Specifically, as shown in FIG. 4, in each of the subframe 1 and the subframe 3, there are 8 REs occupied by the NRS signals, and in the subframe. The NRS signal in 2 does not occupy the RE. Compared with the prior art scheme 2, the scheme 1 provided by the embodiment of the present application can sample the number of REs for receiving power measurement within a certain period of time (for example, within 10 s), so that the accuracy of downlink receiving power measurement is accurate. higher.

On the other hand, since the physical channel changes in the time domain and the frequency domain, the accuracy of the downlink received power measurement is affected. Compared with the distributed distribution of the REs occupied by the NRS in the prior art, when the NSSS is used to measure the received power of the terminal device, the sampled RE is a continuous RE on the time-frequency resource, and the physical channel can be reduced. The influence of the change in the frequency domain on the received power measurement further improves the accuracy of the downlink received power measurement.

On the other hand, since the transmission port group of the NSSS is periodically changed according to the first period, in order to reduce the fact that the first port received by the terminal device is from the same group, the receiving power of the terminal device is averaged. The receiving power measurement error, the network device can notify the terminal device NSSS of the first cycle. As shown in FIG. 4, in the network device, the transmission port group of the NSSS periodically changes according to 40 ms, so the network device can notify the terminal device that the first period is 40 ms. Specifically, in the first NSSS transmission period, the first NSSS transmission period, the group of transmission ports used by the network device only includes the port 1, and the network device uses one during the second NSSS transmission period of the first period of 40 ms. The group transmit port contains port 1 and port 2. The terminal device can receive the NSSS transmitted by the same group of transmitting ports in the same position of the multiple first periods, and can reduce the receiving power measurement error caused by the average receiving power when the received first signal is from the different group of transmitting ports. The accuracy of the downlink received power measurement is further improved.

Specifically, as shown in FIG. 4, the terminal device receives the NSSS simultaneously transmitted by the port 1 and the port 2 in the second transmission period of the NSSS in the first first period, and then in the second first period and the first The same location in the first period (within the second transmission period of the NSSS) receives the NSSS simultaneously transmitted by port 1 and port 2. In the two first periods, the two NSSSs received by the terminal device are port 1 and port. 2 Simultaneously launched NSSS. The NSSS received in the same position as the first two first cycles in the third first cycle is also from port 1 and port 2, and so on. Therefore, the NSSSs received by the terminal device are all from the same group of transmitting ports.

The examples are only used to explain the embodiments of the present application and should not be construed as limiting. The embodiment of the present application is described by taking the first signal as an NSSS as an example. It can be understood that in the NB-IoT system, the first signal may also be other signals sent by the network device. In addition, with the evolution of the communication system, the first signal may also be a signal used by the terminal device to perform the received power measurement in the newly emerging communication system, which is not limited in this embodiment of the present application.

Several embodiments provided by the present application are described below.

Please refer to FIG. 5. FIG. 5 is a schematic flowchart diagram of a power measurement method according to an embodiment of the present application. In the embodiment described in FIG. 5, the terminal device may measure the received power in the cell covered by the network device, and the cell covered by the network device may be a serving cell or a neighboring cell of the serving cell. As shown in FIG. 5, the power measurement method includes, but is not limited to, the following steps S101-S404.

S101. The network device sends the first information to the terminal device.

The first information indicates the first period. The first information may be sent to the terminal device in a manner of high-layer signaling, and the first information may also be identified by a certain field, which is not limited in this embodiment of the present application.

S102. The network device transmits multiple first signals through the same group of transmitting ports at the same location in multiple first periods.

S103. The terminal device receives the multiple first signals transmitted by the same group of transmitting ports, and determines the received power of the first signal according to the multiple first signals.

The first period may be a period in which the transmit port group of the first signal changes. For example, as shown in FIG. 4, the first period is two transmit port groups: a transmit port group 1 (transmit port 1) and a transmit port group 2 A period of change of (transmit port 1 and transmit port 2), the terminal device receives the first signal from the same set of transmit ports at the same location of the plurality of first cycles according to the first period. The terminal device performs power averaging on the first signal transmitted by the same group of transmitting ports, and may calculate the power of each first signal, and then obtain an average value of the powers of all the first signals. Each group of transmit ports may include one transmit port or multiple transmit ports. A set of transmission ports may include one or more transmission ports that transmit the first signal in a first signal transmission period. For specific explanation, reference may be made to the foregoing description of a group of transmission ports, and details are not described herein again. As shown in FIG. 4, in the first NSSS transmission period of the first period, port 1 may be referred to as a group of transmission ports, and in the second NSSS transmission period of the first period, port 1 and port 2 may also be called Make another set of transmit ports.

In addition, in a possible embodiment of the present application, the first period may also be a period that simultaneously describes a change of the transmit port group of the first signal and a change of the initial phase of the first signal. That is to say, the first signal transmitted by the network device in the same position of the plurality of the first periods is from the same group of transmitting ports, and the first signal transmitted by each of the same group of transmitting ports is more The initial phase of the first signal transmitted at the same position of the first period is the same.

For example, please refer to FIG. 6. FIG. 6 is a schematic diagram of a first cycle provided by an embodiment of the present application. As shown in FIG. 6, the change of the transmission port group of the NSSS is periodically changed according to the repetition rule of the port 1 and the port 2. The initial phase of the NSSS is periodically changed according to the repetition law of -90 degrees, 0 degrees, and 90 degrees. The first period is a period that simultaneously describes a change in the transmission port group of the NSSS and a change in the initial phase of the NSSS. The change period T1 of the NSSS transmission port group is twice the transmission period, and the initial phase change period T2 of the NSSS is three times the transmission period. The first period of the NSSS may be the least common multiple of the change period T1 of the NSSS transmit port group and the change period T2 of the initial phase of the NSSS, which is 6 times the transmit period of the NSSS.

The first period in which the terminal device receives the NSSS may also be other common multiples of T1 and T2, for example, 12 times the NSSS transmission period. Or the terminal device does not receive the NSSS from the same group of transmitting ports in the first period of each NSSS, and may be separated by a plurality of first periods, in which the terminal devices do not perform NSSS reception, and then The same location of the first cycle receives the NSSS. Reducing the amount of NSSS received can save signaling overhead and power consumption of the terminal device.

The first signal received by the terminal device at the same position of the plurality of first periods is from the same group of transmission ports, and the initial number corresponding to the number of each of the same group of transmission ports is the same position in the plurality of first periods. The phase is the same. The terminal device may obtain received power for each of the plurality of first signals received in different first periods and average the received power to represent the received power measured by the terminal device. In addition, the terminal device may first superimpose the first signal received in different first periods according to the phase, and then determine the received power measured by the terminal device by determining the power of the signal after the superposition. The process of re-superimposing the power of each of the plurality of first signals received in the different first periods is called non-coherent superposition, and the process of superimposing the respective first signals according to the phase and then seeking power is called coherent superposition.

In the case where the terminal device uses the coherent superposition to obtain the average received power, the first period simultaneously describes the period of the change of the transmit port of the first signal and the change of the initial phase of the first signal, and the terminal device is in the same position of the plurality of first periods. The received first signal not only comes from the same set of transmit ports, but in the same position in the plurality of first cycles, the initial phase corresponding to the number of each of the same set of transmit ports is the same. Not only can the transmission power measurement error caused by power averaging be reduced when the transmission ports are not in the same group, but also the measurement error caused by the cancellation of the first signal of different initial phases when coherently superimposing is performed when calculating the received power. The accuracy of the downlink received power measurement is further improved.

For example, in the former example, as shown in FIG. 6, the terminal device receives the first signal in the first transmission period in the first first period T. The set of transmit ports from which the first signal is derived is transmit port 1, and the initial phase of the first signal is -90 degrees. The same position in the second first period T, that is, the first signal received in the first transmission period in the first transmission period T is also from the transmission port 1, and the initial phase is - 90 degrees. Then, when the terminal device uses the coherent superposition to perform the received power calculation, the first signal is from the transmitting port 1, and the initial phase of the first signal is -90 degrees, and the phase difference signal cancellation phenomenon does not occur when the coherent superposition is performed, and the phenomenon is reduced. When the transmitting ports are not in the same group, the receiving power measurement error caused by the power averaging is performed, and the measurement error caused by the offset in the coherent superposition is reduced, and the accuracy of the downlink receiving power measurement can be further improved.

For example, please refer to FIG. 7. FIG. 7 is a schematic diagram of another first period provided by an embodiment of the present application. As shown in FIG. 7, the terminal device receives the first signal in the first transmission period in the first first period T. The first signal is from a superposition of the first signal transmitted by each of transmit port 1 and transmit port 2. And the initial phase of the first signal from the transmitting port 1 is 0 degrees, and the initial phase of the first signal from the transmitting port 2 is 90 degrees. The same position received in the second first period T in the second first period T, that is, the first signal in the first transmission period, also comes from the transmission port 1 and the transmission port 2. And the initial phase of the first signal from the transmitting port 1 is also 0 degrees, and the initial phase of the first signal from the transmitting port 2 is also 90 degrees. Then, when the terminal device uses the coherent superposition to perform the received power calculation, the first signals are all from the same group of transmitting ports: the transmitting port 1 and the port 2, and the initial phase of the first signal from the transmitting port 1 is 0 degrees, from the transmitting. The initial phase of the first signal of port 2 is 90 degrees, which reduces the receiving power measurement error caused by power averaging when the transmitting ports are not in the same group, improves the accuracy of downlink receiving power measurement, and reduces the coherent superposition. The initial phase of the first signal differently produces a measurement error caused by the signal cancellation, which can further improve the accuracy of the downlink received power measurement.

In another possible embodiment of the present application, the first information may be a direct explicit indication of the value of the first period. For example, the network device notifies the terminal device that the first period of the first signal is 60 ms.

The first information may also be sent to the terminal device in the form of a codebook set. The network device transmits the plurality of the first signals by using the same group of transmitting ports at the same location in the multiple first periods, including: the network device passes the same group of transmitting ports in the same location in multiple first periods according to the codebook set. A plurality of first signals are transmitted. After receiving the first information, the terminal device determines the first period according to the codebook set.

The codebook set includes an index of N codebooks, N codebooks represent N sets of transmit ports and/or initial phases of the first signal; N is a positive integer greater than or equal to 1; the first period is equal to N*t, where , t is the transmission period of the first signal.

For details, please refer to Table 1. Table 1 is an example of an index and a codebook of a codebook provided by an embodiment of the present application. The number of rows in each codebook indicates the number of transmitting ports, and the value in the matrix represented by the codebook indicates the initial phase of the first signal transmitted by the transmitting port, which may be a set {0, 1, -1, j, -j Any of the }. Wherein, 0 indicates that the first signal of the transmitting port does not transmit, 1 indicates that the initial phase of the first signal of the transmitting port is 0 degrees, and -1 indicates that the initial phase of the first signal of the transmitting port is 180 degrees, and j indicates The initial phase of the first signal of the transmitting port is 90 degrees, and -j indicates that the initial phase of the first signal of the transmitting port is -90 degrees.

Table 1 is an example of an index and a codebook of a codebook provided by an embodiment of the present application.

As shown in Table 1, the codebooks are matrixes of 2 rows and 1 column, and the number of transmitting ports is two, and it is assumed to be numbered as transmitting port 1 and transmitting port 2, respectively. The codebook represented by index 0 of the codebook is

It is indicated that during the transmission period of a first signal, only the first signal is transmitted using the transmission port 1, and the initial phase value of the first signal is 0 degree. The codebook indicated by index 1 of the codebook is

It is indicated that during the transmission period of a first signal, only the first signal is transmitted using the transmission port 2, and the initial phase value of the first signal is 90 degrees. The codebook indicated by index 2 of the codebook is

Representing that during the transmission period of a first signal, both the transmitting port 1 and the transmitting port 2 are used to transmit the first signal, and the initial phase of the first signal of the transmitting port 1 is 0 degrees, and the first signal initial phase of the transmitting port 2 is The value is also 90 degrees.

If the codebook set of the network device is {0, 1, 1, 2, 0}, it means that the network device repeatedly transmits the first signal according to {0, 1, 1, 2, 0} in time, that is, according to {0 1, 1, 1, 2, 0} {0, 1, 1, 2, 0} {0, 1, 1, 2, 0} ... transmit the first signal. Specifically, please refer to FIG. 8. FIG. 8 is a schematic diagram of a relationship between a codebook set and a first period according to an embodiment of the present application. As shown in FIG. 8, the index of each codebook may represent a transmission period of a first signal, during which the first signal transmitted by the network device is the initial phase of the codebook indicated by the index of the codebook. And transmitted by the transmitting port. It can also be said that the index of each codebook represents a first signal, and the transmission port and initial phase of the first signal are the transmission port and initial phase indicated by the index of the codebook. For example, the index of the first codebook in the codebook set is 0, and the index of the codebook indicates a transmission period of a first signal, in which the first signal transmitted by the network device comes from the transmission port 1, and the initial phase Is 0. The index of the five codebooks in the codebook set represents a transmission period of five times the first period of the first signal. The transmission period of the first signal may be a protocol pre-defined, for example, 20 ms, or the network device may notify the terminal device by signaling.

When the first information is the information carrying the codebook set, the network device may send the codebook set to the terminal device, and before the step S102, the terminal device may use the number of the index of the codebook in the codebook set and the transmission of the first signal. The period determines the first period of the first signal. For example, in the foregoing example, the terminal device receives the codebook set 01120 sent by the network device, and determines that the first period of the first signal is 20 ms according to the number of indexes of the codebook in the codebook set and the transmission period of the first signal of the protocol predefined by 20 ms. *5=100ms.

In the embodiment of the present application, the initial phase values of the first signal transmitted by the transmitting port are -90 degrees, 0 degrees, 90 degrees, and 180 degrees. The actual communication system is not limited to the initial phase value, and may be The initial phase of any value is not limited in this embodiment of the present application.

The embodiment of the present application introduces, by using an index of each codebook in the codebook set, a transmit port group and an initial phase of the first signal, and it can be understood that the index of each codebook in the codebook set may also indicate A group of transmitting ports of a signal, in which case the first period is a period in which the transmitting port of the first signal changes. Please refer to Table 2, which is an example of an index and a codebook of another codebook provided by an embodiment of the present application. The value in the matrix represented by the codebook indicates whether the first signal transmitted by the transmitting port is used, which may be any of the set {0, 1}. Where 0 indicates that the first signal of the transmitting port does not transmit, and 1 indicates that the first signal of the transmitting port is transmitted.

As shown in Table 2, the codebooks are all 2 rows and 1 column matrix, and the number of transmitting ports is two. It is assumed that the two transmitting ports are numbered as transmitting port 1 and transmitting port 2, respectively. The codebook represented by index 0 of the codebook is

Indicates that the first signal is transmitted using only transmit port 1 during the transmission period of a first signal. The codebook indicated by index 1 of the codebook is

Indicates that the first signal is transmitted using only transmit port 2 during the transmission period of a first signal. The codebook indicated by index 2 of the codebook is

Indicates that the first signal is transmitted using both transmit port 1 and transmit port 2 during the transmit period of a first signal.

In another possible embodiment of the present application, in the first period T, the terminal device may receive multiple first signals represented by the index of the first codebook; the index of the first codebook is a plurality of first signal associations. The index of the codebook.

The first signal represented by the index of the same codebook is from the same set of transmit ports, and the initial phase corresponding to the number of each of the same set of transmit ports is the same at the same location in the plurality of first cycles. Therefore, in the first period, the terminal device can receive the first signal represented by the index of the same codebook according to the codebook set. Then, the number of the received first signals can be increased, and the number of REs that the terminal device samples to perform the received power measurement is increased, so that the accuracy of the downlink received power measurement can be improved.

For example, in the previous example, the codebook set of the network device is {0, 1, 1, 2, 0}, that is, the network device is in time according to {0, 1, 1, 2, 0} {0, 1, 1, 2 , 0}{0, 1, 1, 2, 0} ... transmitting the first signal, the terminal device receiving the index "1" of the codebook in the second first signal transmission period of the first first period The first signal receives the first signal represented by the index "1" of the same codebook during the second first signal transmission period of the next first period. In addition, the terminal device may receive the first index represented by the index “1” of the codebook in the second first signal transmission period of the first first period according to the codebook set {0, 1, 1, 2, 0} And receiving a first signal represented by an index "1" of the same codebook during a third first signal transmission period of the first first period. Then, in a first period, the terminal device can receive more first signals, and the number of REs that the terminal device samples to perform the received power measurement increases, so that the accuracy of the downlink received power measurement can be further improved. And all the first signals are from the same group of transmitting ports, and the initial phases corresponding to the numbers of each of the same group of transmitting ports are the same in the same position in the plurality of first periods. That is, in the same position in a plurality of first periods, the initial phase of the first signal of each of the same group of transmission ports is the same.

Referring to FIG. 9 , FIG. 9 is a schematic flowchart diagram of another power measurement method according to an embodiment of the present application. In the embodiment described in FIG. 9, the terminal device may be configured to perform received power measurement not only in the serving cell where the terminal device is located, that is, the terminal device measures the received power in the serving cell, and is also adjacent to the serving cell. Receive power measurement is performed. The serving cell and the neighboring cell may be covered by different network devices. As shown in FIG. 9, the cell covered by the network device 1 is a serving cell and is represented by a first cell. The cell covered by the network device 2 is a neighboring cell of the serving cell of the terminal device, that is, the second cell. The first period in which the network device 1 transmits the first signal to the terminal device in the first cell may be the same as or different from the second period in which the network device 2 transmits the first signal to the terminal device in the second cell. As shown in FIG. 9, the power measurement method includes, but is not limited to, the following steps S201-S208.

S201. The network device 2 sends information carrying the second period in the second cell to the network device 1.

S202. The network device 1 sends the second information to the terminal device, where the second information carries the first offset.

The network device 1 may calculate the first offset according to the first period of the first signal in the first cell and the second period of the first signal in the received second cell. The first offset amount represents a difference between a second period of the first signal in the second cell and a first period of the first signal in the first cell. In addition, the network device 1 may directly send the information of the second period of the first signal in the second cell to the terminal device, and the terminal device may directly receive the network device 2 according to the second period in the second cell. The first signal of the same set of transmit ports.

S203. The terminal device receives the first information sent by the network device 1.

The first information indicates a first period in the first cell.

S204. The terminal device receives the same group of transmitting ports in the network device 1 to transmit multiple first signals in the same location in multiple first cycles.

S205. The terminal device determines, according to the same group of transmission ports in the network device 1, the received power of the first signal in the first cell.

S206. The terminal device determines a second period in the second cell according to the first period and the first offset amount in the first cell.

S207. The terminal device transmits a plurality of first signals in the same group of transmitting ports in the network device 2 at the same location in the plurality of second periods.

S208. The terminal device determines, according to the same group of transmission ports in the network device 2, the received power of the first signal in the second cell.

The first offset may be a difference between the second period in the second cell and the first period in the first cell, and the difference may be a positive value, a zero value, or a negative value. The first offset may also be a ratio of the second period in the second cell to the first period in the first cell. In addition, the network device 1 sends the information that carries the first offset to the terminal device, and may also include the network device 1 transmitting, to the terminal device, the second period of the first signal in the second cell and the first period in the first cell. The same information. The second period is a period in which the transmission port of the first signal changes in the second cell, or the second period is a least common multiple of the period in which the transmission port of the first signal changes and the period in which the initial phase of the first signal changes, wherein A signal is used for downlink received power measurements. The second period is a period in the second cell, that is, in the neighboring cell, and the first period is a period in the first cell, that is, in the serving cell. The description of the second period can be similarly referred to the first cell, and will not be described again.

For the description of the first information and the first period in the embodiment of the present application, reference may be made to the embodiment described in FIG. 5, and details are not described herein again.

In the embodiment of the present application, the network device 1 that covers the serving cell may notify the terminal device to serve the first period of the cell, and the network device 1 that covers the serving cell may also notify the second period of the neighboring cell of the terminal device. The terminal device may perform received power measurement on the serving cell and the neighboring cell according to the first period of the serving cell and the second period of the neighboring cell. The first period of the serving cell and the second period of the neighboring cell can be notified only by the network device 1 covering the serving cell, and the number of network devices that communicate with the terminal device during the notification period can be reduced, and the terminal device is reduced in communication. The connection process of the network device generates communication, saves processing resources of the terminal device, and saves power consumption of the terminal device.

The step S203 may be performed before S201, or may be performed before step S202. Step S204 is performed after step S203, which may be performed before step S201, may be performed before step S202, may also be performed after step S205, may also be performed after step S206, or may be after step S207 The implementation of the present application does not limit this.

In the embodiment described in FIG. 9, the first period and the second period are carried in different information and sent to the terminal device. The first period and the second period may also be carried in the same information and sent to the terminal device. Based on the network system architecture of FIG. 1 , please refer to FIG. 10 , which is a schematic flowchart of still another power measurement method according to an embodiment of the present disclosure. In the embodiment described in FIG. 10, the network device 1 notifies the serving cell, that is, the first period of the first cell, and notifies the neighboring cell of the serving cell, that is, the second period of the second cell, and the first period and the second period may be The carrier is carried in the same information and sent by the network device 1 to the terminal device. As shown in FIG. 10, the power measurement method includes, but is not limited to, steps S301-S306.

S301. The network device 2 sends information carrying the second period in the second cell to the network device 1.

S302. The network device 1 sends first information to the terminal device, where the first information carries information in a first period in the first cell and a second period in the second cell.

S303. The terminal device receives the first group of transmitting ports of the network device 1 to transmit the plurality of first signals in the same location in the multiple first cycles.

S304. The terminal device determines, according to the multiple first signals transmitted by the same group of transmitting ports in the network device 1, the received power of the first signal in the first cell.

S305. The terminal device transmits a plurality of first signals in the same group of transmitting ports in the network device 2 at the same location in the plurality of second periods.

S306. The terminal device determines, according to the multiple first signals transmitted by the same group of transmitting ports in the network device 2, the received power of the first signal in the second cell.

In the step S305, the first information may also be information that carries the first period and the first offset in the first cell, where the first offset indicates that the second period in the second cell is relative to the first The difference in the first period in the cell. The first offset may also be a ratio of the second period in the second cell to the first period in the first cell. The first information may also be that the carrying network device 1 sends, to the terminal device, information indicating whether the second period in the second cell is the same as the first period in the first cell and the first period in the first cell.

After the first information is the information of the first period and the first offset of the first signal in the first cell, the step S302 may further include determining, by the terminal device, the first offset and the first period. The second period of the first signal in the second cell.

The steps S303-S304 may be performed after the step S305, or may be performed after the step S306, which is not limited by the embodiment of the present application.

For the specific description of the first period and the second period in the embodiment of the present application, reference may be made to the embodiments described in FIG. 5 and FIG. 9, and details are not described herein.

The first period of the first cell and the second period of the second cell are carried by the same information, and the first period of the serving cell and the second part of the neighboring cell can be notified to the terminal device only by the network device 1 covering the serving cell. The period, which reduces the number of network devices that communicate with the terminal device during the notification period. Thereby, the communication generated by the terminal device due to the connection process of the network device that performs communication is reduced, the processing resources of the terminal device are saved, and the power consumption of the terminal device is saved. In addition, the first period of the first cell and the second period of the second cell are carried in the same information and sent to the terminal device, which can reduce the signaling process for the network device and the terminal device to communicate, and save signaling overhead.

The first period of the first cell and the second period of the second cell may be carried in the same information and sent to the terminal device, or may be carried in different information and sent to the terminal device. The network device may also notify the terminal device of the first period of the first cell and the second period of the second cell by using either or both of the foregoing manners, which is not limited in this embodiment of the present application.

The above describes the method of the embodiment of the present invention in detail, and the apparatus of the embodiment of the present invention is provided below.

FIG. 11 is a schematic structural diagram of another network device 20 according to the embodiment of the present disclosure. As shown in FIG. 11, the network device 20 may include a processing unit 401 and a sending unit 402, where:

The sending unit 402 is configured to send first information, where the first information indicates a first period, where the first period is a period in which a transmit port of the first signal changes, or the first period is the first signal a least common multiple of a period of the change of the transmit port and a period of the initial phase change of the first signal, wherein the first signal is used for downlink receive power measurement;

The processing unit 401 is configured to determine the first signal;

The sending unit 402 is further configured to transmit the plurality of the first signals through the same group of transmitting ports at the same location in the plurality of the first periods.

As a possible implementation manner, when the first period is a least common multiple of a period of a change of a transmit port of the first signal and a period of an initial phase change of the first signal, in the plurality of the first period In the same location within, the initial phase corresponding to the number of each of the same set of transmit ports is the same.

As a possible implementation manner, the first information is information that carries the value of the first period, or the first information is that the first period in the first cell and the second in the second cell are carried. The information of the second period, or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates the a difference between the second period and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell;

The second period is a period in which the transmitting port of the first signal changes in the second cell, or the second period is a period in which the transmitting port of the first signal changes in the second cell a least common multiple of the period of the initial phase change of the first signal.

As a possible implementation, the sending unit 402 is further configured to send the second information, where the second information is information carrying the second period in the second cell, or the second information is carrying the first offset. a quantity of information; the first offset amount represents a difference between the second period in the second cell and the first period in the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell.

As a possible implementation manner, the first information is information that carries a codebook set, and the codebook set includes an index of N codebooks, where the N codebooks respectively represent the first signal N sets of transmit ports and/or initial phases; N is a positive integer greater than or equal to 1; the first period is equal to N*t, where t is the transmit period of the first signal;

The sending unit 402, by using the same group of transmitting ports to transmit the plurality of the first signals, in the same location in the multiple of the first period, the sending unit 402, according to the codebook set, in the multiple The same location within the first cycle transmits a plurality of the first signals through the same set of transmit ports.

As a possible implementation manner, the first signal is a narrowband secondary synchronization signal NSSS.

In this embodiment, the functions of the processing unit 401 and the transmitting unit 402 may correspond to the corresponding descriptions of the embodiments of the power measuring method shown in FIG. 5, FIG. 9, and FIG. 10, and are not described herein.

FIG. 12 is a schematic structural diagram of another communication device 10 according to an embodiment of the present disclosure. The communication device 10 may be the terminal device 10 described in FIG. 2, as shown in FIG. Apparatus 10 can include a processing unit 501 and a receiving unit 502, wherein:

The receiving unit 502 is configured to receive first information, where the first information indicates a first period, where the first period is a period in which a transmit port of the first signal changes, or the first period is the first signal a least common multiple of a period of the change of the transmit port and a period of the initial phase change of the first signal, wherein the first signal is used for downlink receive power measurement;

The receiving unit 502 is further configured to receive, by the same location in the plurality of the first periods, a plurality of the first signals of the same group of transmitting ports;

The processing unit 501 is configured to determine, according to the plurality of first signals, a received power of the first signal.

As a possible implementation manner, when the first period is a least common multiple of a period in which the transmitting port of the first signal changes and a period in which the initial phase of the first signal changes, in the plurality of the first periods In the same location, the initial phase corresponding to the number of each of the same set of transmit ports is the same.

As a possible implementation, the first information is information that carries the value of the first period, or the first information is that the first period and the second cell in the first cell are carried. Information of the second period, or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates the second cell a difference between the second period and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell to the first cell Area;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the The least common multiple of the period of the initial phase change of the first signal.

As a possible implementation, when the first information is carrying the information in the first period in the first cell and the second period in the second cell, or the first information is a carrier When the first period and the first offset amount information in the first cell are described,

After the receiving unit 502 receives the first information, the processing unit 501 is further configured to determine, according to the first information, a value of the second period in the second cell;

The receiving unit 502 is further configured to receive, by the same location in the plurality of the second periods, a plurality of the first signals of the same group of transmit ports of the second cell;

The processing unit 501 is further configured to determine, according to the multiple first signals, a received power of the first signal in the second cell.

As a possible implementation, the receiving unit 502 is further configured to receive the second information, where the second information is information that carries the second period in the second cell, or the second information is carried first. Information of the offset amount; the first offset amount represents a difference between the second period in the second cell and the first period in the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell;

The receiving unit 502 is further configured to receive, according to the second period, a plurality of the first signals of the same group of transmit ports of the second cell in the same location in the multiple of the second periods;

As a possible implementation manner, the first information is information that carries a codebook set, and the codebook set includes an index of N codebooks, where the N codebooks respectively represent the first signal N sets of transmit ports and/or initial phases; N is a positive integer greater than or equal to 1;

After the receiving unit 502 receives the first information, the processing unit 501 is further configured to determine the first period according to the number N of indexes of the codebooks in the codebook set, where the first period is equal to N*t, Where t is the transmission period of the first signal.

As a possible implementation manner, in a plurality of the first periods, the receiving unit 502 is further configured to receive, by the first index of the first codebook, the first signal; the index of the first codebook An index of a codebook associated with a plurality of said first signals.

In this embodiment, the functions of the processing unit 501 and the receiving unit 502 may correspond to the corresponding descriptions of the embodiments of the power measuring method shown in FIG. 5, FIG. 9, and FIG. 10, and are not described herein.

The embodiment of the present application further provides a power measurement system, including: a network device 20 and a terminal device 10, wherein: the network device 20 establishes a communication connection with the terminal device 10, and the network device 20 is configured to perform FIG. The implementation of the power measurement method shown in FIG. 9 or FIG. 10 on the network device side; the terminal device 10 is used to implement the implementation of the power measurement method shown in FIG. 5, FIG. 9 or FIG. 10 on the terminal device side. For specific implementations of the network device 20 and the terminal device 10, reference may be made to the method embodiments corresponding to FIG. 5, FIG. 9, and FIG. 10, and details are not described herein again.

Specifically, the network device 20 may be the network device described in FIG. 3 or FIG. The terminal device 10 may be the terminal device described in FIG. 2 or FIG.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in or transmitted by a computer readable storage medium. The computer instructions can be from a website site, computer, server or data center to another website site by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Transfer from a computer, server, or data center. The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)) or the like.

One of ordinary skill in the art can understand all or part of the process of implementing the above embodiments, which can be completed by a computer program to instruct related hardware, the program can be stored in a computer readable storage medium, when the program is executed The flow of the method embodiments as described above may be included. The foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.

Claims

A power measurement method, comprising:

The first information is sent by the network device, where the first information indicates a first period, where the first period is a period in which the transmit port of the first signal changes, or the first period is a change of the transmit port of the first signal And a least common multiple of a period of the initial phase change of the first signal, wherein the first signal is used for downlink received power measurement;

The network device determines the first signal;

The network device transmits a plurality of the first signals through the same set of transmit ports at the same location in the plurality of the first periods.
The method according to claim 1, wherein the first period is a plurality of times of a period in which a transmission port of the first signal changes and a period in which an initial phase of the first signal changes, in a plurality of In the same position in the first period, the initial phase corresponding to the number of each of the same group of transmitting ports is the same.
The method according to claim 1 or 2, wherein the first information is information carrying the value of the first period, or the first information is the first one in the first cell. The information of the period and the second period in the second cell, or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates a difference between the second period in the second cell and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is the a neighborhood of a cell;

The second period is a period in which the transmitting port of the first signal changes in the second cell, or the second period is a period in which the transmitting port of the first signal changes in the second cell a least common multiple of the period of the initial phase change of the first signal.
The method according to any one of claims 1 to 3, wherein the method further comprises:

The network device sends the second information, where the second information is the information carrying the second period in the second cell, or the second information is the information carrying the first offset; the first offset Determining a difference between the second period in the second cell and the first period in the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell.
The method according to claim 1 or 2, wherein the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively Denoting N sets of transmit ports and/or initial phases of the first signal; N is a positive integer greater than or equal to 1; the first period is equal to N*t, where t is a transmit period of the first signal;

Transmitting, by the network device, the plurality of the first signals by using the same group of transmitting ports at the same location in the multiple of the first period, including:

And the network device transmits a plurality of the first signals through the same group of transmission ports at the same location in the plurality of the first periods according to the codebook set.
The method according to any one of claims 1 to 5, wherein the first signal is a narrowband secondary synchronization signal NSSS.
A power measurement method, comprising:

Receiving, by the terminal device, the first information, where the first information indicates a first period, where the first period is a period in which a transmit port of the first signal changes, or the first period is a change of a transmit port of the first signal And a least common multiple of a period of the initial phase change of the first signal, wherein the first signal is used for downlink received power measurement;

Receiving, by the terminal device, the plurality of the first signals of the same group of transmitting ports in the same position in the plurality of the first periods;

The terminal device determines a received power of the first signal according to the plurality of first signals.
The method according to claim 7, wherein the first period is a plurality of times of a period in which a transmission port of the first signal changes and a period in which an initial phase of the first signal changes, in a plurality of In the same position in the first period, the initial phase corresponding to the number of each of the same group of transmitting ports is the same.
The method according to claim 7 or 8, wherein the first information is information carrying the value of the first period, or the first information is carried in the first cell Information of the first period and the second period in the second cell, or the first information is information that carries the first period and the first offset in the first cell, the first offset And indicating a difference between the second period in the second cell and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring area of the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the The least common multiple of the period of the initial phase change of the first signal.
The method according to claim 9, wherein the first information is when carrying the first period in the first cell and the second period in the second cell, or the When the information is the information that carries the first period and the first offset in the first cell,

After the terminal device receives the first information, the method further includes:

Determining, by the terminal device, a value of the second period in the second cell according to the first information;

Receiving, by the terminal device, the plurality of the first signals of the same group of transmitting ports of the second cell in the same location in the plurality of the second periods;

The terminal device determines, according to the plurality of first signals, a received power of the first signal in the second cell.
The method according to any one of claims 7 to 10, further comprising:

The terminal device receives the second information, where the second information is information that carries the second period in the second cell, or the second information is information that carries the first offset amount; The quantity represents a difference between the second period in the second cell and the first period in the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell;

Receiving, by the terminal device, the plurality of the first signals of the same group of transmitting ports of the second cell in the same location in the plurality of the second periods according to the second period;

The terminal device determines, according to the plurality of first signals, a received power of the first signal in the second cell.
The method according to claim 7 or 8, wherein the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively Generating N sets of transmit ports and/or initial phases of the first signal; N is a positive integer greater than or equal to 1;

After the terminal device receives the first information, the method further includes:

Determining, by the terminal device, the first period according to the number N of indexes of the codebooks in the codebook set, where the first period is equal to N*t, where t is a transmission period of the first signal .
The method of claim 12, wherein the method further comprises:

In a plurality of the first periods, the terminal device receives a plurality of the first signals represented by an index of the first codebook; and the index of the first codebook is a code that is associated with the plurality of the first signals The index of this.
The method according to any one of claims 7 to 13, wherein the first signal is a narrowband secondary synchronization signal NSSS.
A network device, comprising: a processing unit and a sending unit, wherein:

The sending unit is configured to send first information, where the first information indicates a first period, where the first period is a period in which a transmitting port of the first signal changes, or the first period is the first period a least common multiple of a period in which the transmit port of the signal changes and a period of the initial phase change of the first signal, wherein the first signal is used for downlink received power measurement;

The processing unit is configured to determine the first signal;

The sending unit is further configured to transmit a plurality of the first signals through the same group of transmitting ports at the same location in the plurality of the first periods.
The apparatus according to claim 15, wherein said first period is a plurality of times when a period of change of a transmission port of said first signal and a period of initial phase change of said first signal are different In the same position in the first period, the initial phase corresponding to the number of each of the same group of transmitting ports is the same.
The device according to claim 15 or 16, wherein the first information is information carrying the value of the first period, or the first information is the first one in the first cell. The information of the period and the second period in the second cell, or the first information is information that carries the first period and the first offset in the first cell, where the first offset indicates a difference between the second period in the second cell and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is the a neighborhood of a cell;

The second period is a period in which the transmitting port of the first signal changes in the second cell, or the second period is a period in which the transmitting port of the first signal changes in the second cell a least common multiple of the period of the initial phase change of the first signal.
The device according to any one of claims 15 to 17, wherein the sending unit is further configured to send second information, where the second information is information carrying a second period in the second cell, or The second information is information carrying a first offset; the first offset indicates a difference between the second period in the second cell and the first period in the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell.
The device according to claim 15 or 16, wherein the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively Denoting N sets of transmit ports and/or initial phases of the first signal; N is a positive integer greater than or equal to 1; the first period is equal to N*t, where t is a transmit period of the first signal;

Transmitting, by the sending unit, a plurality of the first signals by using the same group of transmitting ports at the same location in the plurality of the first periods, including:

The sending unit is configured to, according to the codebook set, transmit a plurality of the first signals through the same group of transmitting ports at the same location in the plurality of the first periods.
The device according to any one of claims 15 to 19, wherein the first signal is a narrowband secondary synchronization signal NSSS.
A terminal device, comprising: a processing unit and a receiving unit, wherein:

The receiving unit is configured to receive first information, where the first information indicates a first period, where the first period is a period in which a transmitting port of the first signal changes, or the first period is the first period a least common multiple of a period in which the transmit port of the signal changes and a period of the initial phase change of the first signal, wherein the first signal is used for downlink received power measurement;

The receiving unit is further configured to receive, by the same location in the plurality of the first periods, a plurality of the first signals of the same group of transmitting ports;

The processing unit is configured to determine, according to the plurality of first signals, a received power of the first signal.
The apparatus according to claim 21, wherein said first period is a plurality of times when a period of change of a transmission port of said first signal and a period of initial phase change of said first signal are different In the same position in the first period, the initial phase corresponding to the number of each of the same group of transmitting ports is the same.
The device according to claim 21 or 22, wherein the first information is information carrying the value of the first period, or the first information is carried in the first cell Information of the first period and the second period in the second cell, or the first information is information that carries the first period and the first offset in the first cell, the first offset And indicating a difference between the second period in the second cell and the first period in the first cell; the first cell is a serving cell of the terminal device, and the second cell is a neighboring area of the first cell;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the The least common multiple of the period of the initial phase change of the first signal.
The device according to claim 23, wherein the first information is information carrying the first period in the first cell and the second period in the second cell, or When the information is the information that carries the first period and the first offset in the first cell,

After the receiving unit receives the first information, the processing unit is further configured to determine, according to the first information, a value of the second period in the second cell;

The receiving unit is further configured to receive, by the same location in the plurality of the second periods, a plurality of the first signals of the same group of transmit ports of the second cell;

The processing unit is further configured to determine, according to the plurality of first signals, a received power of the first signal in the second cell.
The device according to any one of claims 21 to 24, wherein the receiving unit is further configured to receive second information, where the second information is information that carries the second period in the second cell, Or the second information is information carrying a first offset, where the first offset indicates a difference between the second period in the second cell and the first period in the first cell. ;

The second period is a period in which the transmitting port of the first signal in the second cell changes, or the second period is a period in which the transmitting port of the first signal changes in the second cell and the a least common multiple of a period of an initial phase change of the first signal; the first cell is a serving cell of the terminal device, and the second cell is a neighboring cell of the first cell;

The receiving unit is further configured to receive, according to the second period, a plurality of the first signals of the same group of transmitting ports of the second cell in the same location in the multiple of the second periods;

The processing unit is further configured to determine, according to the plurality of first signals, a received power of the first signal in the second cell.
The device according to claim 21 or 22, wherein the first information is information carrying a codebook set, and the codebook set includes an index of N codebooks, wherein the N codebooks respectively Generating N sets of transmit ports and/or initial phases of the first signal; N is a positive integer greater than or equal to 1;

After the receiving unit receives the first information, the processing unit is further configured to determine the first period according to the number N of indexes of the codebooks in the codebook set, where the first period is equal to N* t, where t is the transmission period of the first signal.
The device according to claim 26, wherein, in the plurality of the first periods, the receiving unit is further configured to receive a plurality of the first signals represented by an index of the first codebook; The index of the first codebook is an index of a plurality of codebooks associated with the first signal.
The device according to any one of claims 21 to 27, wherein the first signal is a narrowband secondary synchronization signal NSSS.