CN113412648B

CN113412648B - Communication method and communication device

Info

Publication number: CN113412648B
Application number: CN201980091616.5A
Authority: CN
Inventors: 毕文平; 余政; 杨育波; 程型清
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-05-01
Filing date: 2019-05-01
Publication date: 2023-01-06
Anticipated expiration: 2039-05-01
Also published as: WO2020220365A1; CN113412648A

Abstract

The application provides a communication method and device, which can reduce the signaling overhead of a first signal. The communication method comprises the following steps: the method comprises the steps that first indication information is determined by first equipment, the first indication information is used for indicating frequency domain position information of a first signal of second equipment, the frequency domain position of the first signal can be determined according to the frequency domain position of a second signal and the first indication information, the first signal is a resynchronization signal of an adjacent cell of the second equipment, and the second signal is a resynchronization signal of a service cell of the second equipment; and the first equipment sends the first indication information to the second equipment. The method and the device provided by the embodiment of the application can be applied to communication systems, such as V2X, LTE-V, V2V, internet of vehicles, MTC, ioT, LTE-M, M2M, internet of things and the like.

Description

Communication method and communication device

Technical Field

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

Background

Currently, an evolved long term evolution-advanced (LTE-a) system will continue to provide wireless communication services for its User Equipment (UE) in a short term (even a long term). In particular, enhanced machine type communication (eMTC) systems and their other evolution systems (background eMTC, feMTC; even background eMTC, efmtc; additional MTC, AMTC) are systems derived on the basis of LTE, which operate in LTE systems and frequency bands.

In Downlink (DL) transmission, the eMTC system and its evolution system use Primary Synchronization Signal (PSS) and Secondary Synchronization Signal (SSS) in the LTE system for synchronization. Since the primary synchronization signal and the secondary synchronization signal are sparse in the time domain, a long time is required for the synchronization process by using the two signals. Therefore, a resynchronization signal (RSS) is introduced, which is a periodic signal. The periodic RSS is added for the synchronous signals, so that the synchronous time can be reduced, and the power consumption of a user can be saved.

To further enhance the mobility performance of the UE, the synchronization information of the neighbor cell may be obtained by measuring the RSS of the neighbor cell. At present, signaling overhead required for RSS configuration is relatively high, and in general, there are a large number of neighboring cells of a UE, and the UE needs to receive RSS configuration of each neighboring cell, so signaling burden received by the UE is heavy, and power consumption of the UE is wasted. The network side needs to send the configuration of RSS of these neighboring cells, so the signaling overhead of the network is large, and system resources and power consumption are wasted.

In summary, how to reduce the signaling overhead of RSS configuration of neighboring cells is an urgent problem to be solved.

Disclosure of Invention

The application provides a communication method and device, which can reduce the signaling overhead of a first signal.

In a first aspect, a communication method is provided, including:

the method comprises the steps that first indication information is determined by first equipment, the first indication information is used for indicating frequency domain position information of a first signal of second equipment, the frequency domain position of the first signal can be determined according to the frequency domain position of a second signal and the first indication information, the first signal is a resynchronization signal of an adjacent cell of the second equipment, and the second signal is a resynchronization signal of a service cell of the second equipment;

and the first equipment sends the first indication information to the second equipment.

Therefore, the frequency domain position of the first signal can be determined according to the frequency domain position of the second signal and the first indication information, that is, the first indication information is used for indicating the offset of the frequency domain position of the first signal relative to the frequency domain position of the second signal, rather than indicating the absolute position of the first signal in the system bandwidth, so that the size of the frequency domain position indication information can be saved, and further the system signaling overhead can be saved.

With reference to the first aspect, in certain implementations of the first aspect, the first indication information is used to indicate frequency domain location information of a first signal of a second device, and the first indication information includes:

a first bit state set corresponding to bits of the first indication information indicates a frequency domain position of the first signal in a narrow band where the second signal is located, and the first bit state set comprises one or more bit states; or

The second state set corresponding to the bits of the first indication information indicates a first narrow band where the first signal is located, and the frequency domain positions of the first signal and the second signal in the narrow band are the same or predefined, and the second bit state set comprises one or more bit states.

k bits of the N bits of the first indication information indicate the offset of a first narrow band in which the first signal is located and a second narrow band in which the second signal is located;

the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband offset from a frequency domain position of the second signal within the second narrowband, or the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband.

K bits of the N bits of the first indication information indicate the narrowband number or index where the first signal is located;

the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband and a frequency domain position of the second signal within the second narrowband, or the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband (lowest RB number within narrowband, or intra-narrowband RB group number).

With reference to the first aspect, in some implementations of the first aspect, the frequency domain position of the first signal may be determined according to the first indication information and a frequency domain position where a first parameter and/or a second signal are located, where the first parameter is an interval granularity of the frequency domain position of the first signal;

when the system bandwidth of the adjacent cell or the serving cell belongs to a first bandwidth set, the first parameter is k1;

when the system bandwidth of the adjacent cell or the serving cell belongs to a second bandwidth set, the first parameter is k2;

wherein the elements in the first set of bandwidths are smaller than the elements in the second set of bandwidths, k1< k2.

Optionally, the first indication information may include M bits, where 1 bit in the M bits is used to indicate whether the narrowband where the first signal and the second signal are located is the same.

When the 1 bit indicates that the narrowband in which the first signal and the second signal are located is the same, the M-1 bit is used for indicating the position of the first signal in the narrowband. The position within the narrow band may be the RB number or the lowest RB number of the first signal within the narrow band, or may indicate an offset of the position within the narrow band of the first signal from the position within the narrow band of the second signal, which may be an RB number offset or may be a lowest RB number offset.

When the 1 bit indicates that the first signal and the second signal are different from each other, the M-1 bit indicates the narrowband position (i.e. the position of the first narrowband or the narrowband number or the narrowband index) where the first signal is located; or the M-1 bit indicates the offset of the narrowband position of the first signal from the narrowband position of the second signal, and the offset of the positions may refer to the offset of the narrowband number or index.

Optionally, x bits of the M bits of the first indication information indicate an offset between a first narrowband where the first signal is located and a second narrowband where the second signal is located, or x bits of the M bits of the first indication information indicate a number of the first narrowband where the first signal is located; the remaining N-x bits of the M bits indicate a frequency domain position of the first signal within the first narrowband offset from a frequency domain position of the second signal within the second narrowband or a frequency domain position of the first signal within the first narrowband.

Optionally, the RB where the frequency domain position of the lowest PRB of the first signal is numbered as Q, where Q is k × N + P, where N is an integer greater than or equal to zero, k is 2,4, 6, or 8, and P is an integer greater than or equal to zero and less than k.

In a second aspect, a communication method is provided, including:

the method comprises the steps that a second device receives first indication information sent by a first device, wherein the first indication information is used for indicating frequency domain position information of a first signal of the second device, and the first signal is a resynchronization signal of an adjacent cell of the second device;

the second device determines the frequency domain position of the first signal according to the first indication information and the frequency domain position of a second signal, wherein the second signal is a resynchronization signal of a serving cell of the second device;

and the second equipment measures the first signal according to the frequency domain position of the first signal.

With reference to the second aspect, in some implementations of the second aspect, the first indication information is used to indicate frequency domain location information of a first signal of a second device, and the first indication information includes:

And a second state set corresponding to bits of the first indication information indicates a first narrow band where the first signal is located, the frequency domain positions of the first signal and the second signal in the narrow band are the same, and the second bit state set comprises one or more bit states.

With reference to the second aspect, in some implementation manners of the second aspect, the determining, by the second device, the frequency domain position of the first signal according to the first indication information and the frequency domain position where the second signal is located includes:

the second device determines the frequency domain position of the first signal according to the first indication information, the frequency domain position of the second signal and a first parameter, wherein the first parameter is the interval granularity of the frequency domain position of the first signal;

When the 1 bit indicates that the narrowband in which the first signal and the second signal are located is the same, the M-1 bit is used for indicating the position of the first signal in the narrowband. The position within the narrow band may be the RB number or the lowest RB number of the first signal within the narrow band, or may indicate an offset of the position within the narrow band of the first signal from the position within the narrow band of the second signal, which may be an RB number offset, or may be a lowest RB number offset.

When the 1 bit indicates that the narrowband where the first signal and the second signal are located are different, the M-1 bit indicates the narrowband location where the first signal is located (i.e. the location of the first narrowband or the narrowband number or the narrowband index); or the M-1 bit indicates the offset of the narrowband position of the first signal from the narrowband position of the second signal, and the offset of the positions may refer to the offset of the narrowband number or index.

In a third aspect, a communication method is provided, including:

the first device determines second indication information, wherein the second indication information is used for indicating a time offset of a first signal of a second device, so that an actual time offset value of the first signal can be determined according to the time offset, a first time unit and a duration, wherein when the duration of the first signal is 160ms, the first time unit is N times of one data frame, wherein N is a positive integer greater than 1, or the first time unit is M times of a measurement interval period of the second device, wherein M is a positive integer;

and the first equipment sends the second indication information to the second equipment.

Therefore, in the embodiment of the present application, the first time unit is set to be N times of one data frame, so that the granularity of the time offset of the first signal in the embodiment of the present application is greater than that in the prior art, and thus the value range of the time offset can be reduced, and based on this, the signaling overhead for indicating the time offset can be saved, thereby reducing the system signaling overhead.

Therefore, in the embodiment of the present application, by setting the first time unit to be an integer multiple of the measurement interval period of the second device, when the first device sends the first signal, the second device is always in a state of detecting the first signal, and therefore, in the embodiment of the present application, the second device can measure the first signal, thereby avoiding waste of signaling and improving system throughput.

With reference to the third aspect, in certain implementations of the third aspect, the actual time offset value of the first signal is determined according to the time offset, a first time unit, a duration and a second parameter, where the second parameter is determined according to a synchronization state between a serving cell of the second device and a neighboring cell of the second device.

Therefore, in the embodiment of the present application, by correcting the time offset value or the actual time offset value by using the second parameter, the time difference asynchronously introduced can be eliminated, so that the second device can detect the first signal, thereby avoiding the waste of signaling and improving the system throughput.

With reference to the third aspect, in certain implementations of the third aspect, when the first signal duration is 160ms, the first signal actual time offset value is a timeoffset _ K _ frames, where timeoffset ranges from 0 to 1, K is 8, or from 0 to 3, K is 4, or from 0 to 7, K is 2, where kframe is the first time unit;

when the first signal duration is 320ms, the actual time offset value of the first signal is a timeoffset frame, where the timeoffset ranges from 0 to 3, K is 8, or ranges from 0 to 7, K is 4, or ranges from 0 to 15, K is 2, where K is the first time unit;

when the first signal duration is 640ms, the actual time offset value of the first signal is a timeoffset frame, where the timeoffset ranges from 0 to 3, K is 16, or ranges from 0 to 7, K is 8, or ranges from 0 to 15, K is 4, where K is the first time unit;

when the duration of the first signal is 1280ms, the actual time offset value of the first signal is timeoffset value K frames, wherein the timeoffset value ranges from 0 to 3, K is 32, or the timeoffset value ranges from 0 to 7, K is 16, or the timeoffset value ranges from 0 to 15, K is 8, wherein K frames is the first time unit;

wherein the timeoffset represents the time offset, and the frames represents the length of the data frame.

In a fourth aspect, a communication method is provided, including:

the second device receives second indication information sent by the first device, wherein the second indication information is used for indicating the time offset of the first signal of the second device;

the second device determines an actual time offset value of the first signal according to the time offset, a first time unit and a duration value, wherein the first time unit is N times of one data frame when the duration of the first signal is 160ms, and N is a positive integer greater than 1;

the second device measures the first signal based on an actual time offset value of the first signal.

Therefore, in the embodiment of the present application, by setting the first time unit to be N times of one data frame, the granularity of the time offset of the first signal in the embodiment of the present application is greater than the granularity of the time offset in the prior art, so that the value range of the time offset can be reduced, and based on this, the signaling overhead for indicating the time offset can be saved, thereby reducing the system signaling overhead.

With reference to the fourth aspect, in some implementations of the fourth aspect, the determining, by the second device, an actual time offset value for the first signal based on the time offset, the first time unit, and the duration value includes:

the second device determines an actual time offset value of the first signal based on the time offset, the first time unit, the duration value, and a second parameter, wherein the second parameter is determined based on a synchronization status between a serving cell of the second device and a neighboring cell of the second device.

Therefore, in the embodiment of the present application, by modifying the time offset value or the actual time offset value by using the second parameter, the time difference asynchronously introduced can be eliminated, so that the second device can detect the first signal, thereby avoiding the waste of signaling and improving the system throughput.

With reference to the fourth aspect, in certain implementations of the fourth aspect, when the first signal duration is 160ms, the first signal actual time offset value is timeoffset x K frames, where timeoffset ranges from 0 to 1, K is 8, or ranges from 0 to 3, K is 4, or ranges from 0 to 7, K is 2, where kframe is the first time unit;

when the first signal duration is 320ms, the actual time offset value of the first signal is a timeoffset x K frames, where timeoffset ranges from 0 to 3 and K is 8, or ranges from 0 to 7 and K is 4, or ranges from 0 to 15 and K is 2, where kframe is the first time unit;

when the first signal duration is 640ms, the actual time offset value of the first signal is a timeoffset x K frames, wherein the timeoffset ranges from 0 to 3, K is 16, or the timeoffset ranges from 0 to 7, K is 8, or the timeoffset ranges from 0 to 15, K is 4, wherein kframe is the first time unit;

wherein the timeoffset represents the time offset and the frames represents the length of the data frame.

In a fifth aspect, a communication device is provided, which includes means for performing each step of the method in the first to fourth aspects or any possible implementation manner of the first to fourth aspects.

In a sixth aspect, there is provided a communication apparatus comprising: a transceiver, a memory, and a processor. Wherein the transceiver, the memory, and the processor are in communication with each other through an internal connection path, the memory is configured to store instructions, the processor is configured to execute the instructions stored by the memory to control a receiver to receive signals and a transmitter to transmit signals, and when the instructions stored by the memory are executed by the processor, the execution causes the processor to perform the method of any one of the possible implementations of the first to fourth aspects or the first to fourth aspects.

In a seventh aspect, a communication system is provided, which includes the apparatus provided in the fifth aspect and the apparatus provided in the sixth aspect.

In an eighth aspect, a computer program product is provided, the computer program product comprising a computer program for performing, when executed by a processor, the method of any possible implementation of the first to fourth aspects or of the first to fourth aspects.

A ninth aspect provides a computer readable storage medium having stored thereon a computer program for performing, when executed, the method of any possible implementation manner of the first to fourth aspects or the first to fourth aspects.

Drawings

Fig. 1 is a schematic diagram of a communication system suitable for use in the present application.

Fig. 2 is a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 3 is a schematic diagram of possible frequency domain positions of the first signal within the narrow band.

Fig. 4 shows a schematic flow chart of a communication method provided in an embodiment of the present application.

Fig. 5 shows a schematic diagram of an RSS measurement in the prior art.

Fig. 6 shows a schematic block diagram of a communication device according to an embodiment of the present application.

Fig. 7 shows a schematic block diagram of another communication device provided in an embodiment of the present application.

Detailed Description

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

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, a LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth generation (5 g) System, or a New Radio (NR), etc. By way of example, the communication system is, for example, V2X, LTE-V, V2V, internet of vehicles, MTC, ioT, LTE-M, M2M, internet of things, and the like.

First, an application scenario of the present application is described, and fig. 1 is a schematic diagram of a communication system suitable for the present application.

The communication system includes network device 110, terminal device 120, terminal device 130, terminal device 140, terminal device 150, terminal device 160, and terminal device 170, which communicate with network device 110 through a wireless link. By way of example, communication with network device 110 may be via electromagnetic waves.

In fig. 1, the network device 110 may send signaling and/or data to one or more of the above 6 terminal devices. The terminal device 150, the terminal device 160, and the terminal device 170 may also form a communication system, in which the terminal device 160 may send signaling and/or data to one or both of the terminal device 150 and the terminal device 170, that is, the embodiments of the present application may be applied to not only communication between the terminal device and a network device, but also communication between the terminal device and the terminal device.

It should be noted that a plurality of terminal devices are shown in the embodiment of the present application to better and more fully describe the embodiment of the present application, but should not limit the embodiment of the present application at all, and in practical applications, only one or more terminal devices may exist.

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

The network device 110 may be a base station defined by 3GPP, e.g. a base station (gNB) in a 5G communication system. The network device 110 may also be an access network device of non-3GPP (non-3 GPP), such as an Access Gateway (AGW). Network device 110 may also be a relay station, an access point, a vehicle device, a wearable device, and other types of devices.

The communication system 100 is only an example, and a communication system to which the present application is applied is not limited thereto, and for example, the number of network devices and terminal devices included in the communication system 100 may be other numbers.

In the prior art, in a serving cell (i.e., a local cell) of a terminal device, configuration of each RSS needs to be notified by using 18-bit (bit) signaling. The following shows an example of configuration information of RSS in the present cell.

Wherein, the frequency location (freqLocation) is used to indicate a frequency domain location of an RB of a lower bit among consecutive 2 RBs occupied by the RSS or an RB number where the lowest RB is located. As an example, the system bandwidth is 20M, and the system bandwidth of 20M includes 100 RBs, so that there are 99 possible situations in the system bandwidth for the positions of 2 consecutive RBs occupied by the RSS, that is, there are 99 possible situations in the system bandwidth for the position of the lower RB in the 2 consecutive RBs, and therefore, a bit state corresponding to 7 bits is required (total 128 bit states corresponding to 7 bits, and 99 bit states among them may be used) to indicate the frequency domain position of the lower RB in the system bandwidth, which results in a large signaling overhead that needs to be used for configuring the RSS.

When the terminal device needs to measure the RSS of the neighboring cell, the network device needs to indicate the frequency domain location of the RSS of the neighboring cell to the terminal device. In general, there are many neighboring cells of the terminal device, and the terminal device needs to receive RSS configurations of the neighboring cells, which causes heavy signaling receiving load of the terminal device. In addition, the network side needs to send RSS configurations of these neighboring cells, which results in high signaling overhead of the network and waste of system resources and power consumption.

In view of this, embodiments of the present application provide a communication method, which can reduce signaling overhead for configuring RSS.

Fig. 2 shows a schematic flowchart of a communication method provided in an embodiment of the present application. The communication method of fig. 2 can be applied to the communication system of fig. 1. As an example, the network device may be an example of a first device, and the terminal device may be an example of a second device, where the terminal device may be any one of the terminal devices described in fig. 1 above, but the embodiment of the present application is not limited thereto, for example, the first device may also be the terminal device.

The first device may be a device with a transmitting capability, and the second device may be a device with a receiving capability.

210, a network device determines first indication information, where the first indication information is used to indicate frequency domain position information of a first signal of a terminal device, so that a frequency domain position of the first signal can be determined according to a frequency domain position where a second signal is located and the first indication information.

As an example, the first signal is a resynchronization signal RSS of a neighboring cell of the terminal device, and the second signal is a resynchronization signal RSS of a serving cell of the terminal device.

In particular, the first indication information may indicate an offset of a frequency domain position of the first signal with respect to a frequency domain position of the second signal. Thus, the frequency domain position of the first signal can be determined according to the frequency domain position of the second signal and the offset.

In some possible implementations, a first bit state set corresponding to a bit of the first indication information indicates a frequency domain position of the first signal within a narrow band in which the second signal is located, and the first bit state set includes one or more bit states. That is, in the embodiment of the present application, the above-mentioned bit state may be used to indicate the frequency domain position of the first signal within the narrow band in which the second signal is located. The narrow bands of the first signal and the second signal are the same.

As an example, the first indication information may include 2 bits, and the first bit state set corresponding to the 2 bits includes 3 bit states, which are 00,01, and 10, respectively. As an example, the first indication information may include 3 bits, and the 3 bits correspond to a first set of bit states including 8 bit states, which are 000,001,010,011,100,101,110,111, respectively.

It should be noted that the system bandwidth may be divided into several narrow bands, and each narrow band occupies several RBs. As an example, when the system bandwidth is 20M, the system bandwidth may be divided into 16 narrow bands, each of which includes 6 RBs.

It should be noted that any formula variations or tables or other predefined rules that give the same result as the examples in the present invention belong to the protection scope of the embodiments of the present application.

Optionally, each 2 consecutive RB groups constitute an RB group with an index (index) of i. In some alternative embodiments, any two RB groups do not contain the same RBs. In a specific implementation, the RB groups may be numbered according to a certain rule. As an example, the rule may be configured for the network device, such as in order of RB number from small to large or from large to small.

Fig. 3 shows a schematic diagram of possible frequency domain positions of the first signal within the narrow band. There are 6 RBs in a narrow band, and the first signal occupies 2 consecutive RBs, so there may be a total of 3 non-overlapping allocations of the first signal in a narrow band. For example, the first signal occupies the first 2 RBs in a narrow band in mode 1, the first signal occupies the middle 2 RBs in a narrow band in mode 2, and the first signal occupies the last 2 RBs in a narrow band in mode 4.

Alternatively, the first 2 RB groups in a narrowband may be numbered 0, the middle 2 RB groups may be numbered 1, and the last 2 RB groups may be numbered 3.

It should be noted that fig. 3 is only used as an example and shows possible frequency domain positions of the first signal in a narrow band, but the embodiment of the present application is not limited thereto. For example, the first signal may also have 5 overlapping allocation patterns in the first narrow band, such as pattern 1 occupying the first RB and the second RB in a narrow band, pattern 2 occupying the second RB and the third RB in a narrow band, and so on.

For a case that the first bit state set corresponding to the bits of the first indication information indicates the frequency domain position of the first signal in the narrowband where the second signal is located, in a specific implementation manner, the first indication information indicates that the first signal is the same as the narrowband of the second signal, and the frequency domain indication value in the narrowband of the first signal is q1, that is, the offset of the frequency domain position in the narrowband of the first signal from the frequency domain position of the second signal in the narrowband is q1. When the frequency domain location (e.g., number) of the second signal within the narrow band is r1, then the location of the first signal within the narrow band is: (r 1+ q 1) mod L, where L is the number of possible frequency domain locations within a narrow band, e.g., L =3 represents 2 consecutive RBs with 3 different locations within a narrow band.

In some possible implementations, the first indication information indicates that the first signal is the same as the narrowband of the second signal, and the frequency domain position within the narrowband of the first signal is q1, where q1 is the RB number or index where the lowest RSS of the first signal is located, or q1 is the number or index of the RB group.

Or in some possible implementations, the position of the first signal within the narrow band is r1+ q1, which is not limited in this embodiment of the present application.

Table 1 shows an example of a first set of bit states corresponding to bits of the first indication information.

TABLE 1

As shown in table 1, the first indication information has 2 bits, and bit state 00 in the first bit state set is used to indicate that the position of the first signal in the narrowband is r1 mod3 × m, or to indicate that q1=0; bit state 01 is used to indicate the position of the first signal within the narrow band is (r 1+1 × m) mod3 × m, or to indicate q1=1 × m, and so on. Where M =1 denotes grouping RBs within the narrow band into groups of two each, when the position of the first signal within the narrow band is indicated by the RB group number; m =2, for indicating the RB number or index where the lowest RB of the RSS within the narrowband is located. r1 may be the number of the RB group of the second signal within the narrowband or the number or index of the lowest RB within the narrowband; or r1 is predefined or configured by the first device, such as r1=0. It should be noted that any formula variations or tables or other predefined rules that yield the same results as the examples are within the scope of the embodiments of the present application.

Alternatively, when bit states 00,01,11 in table 1 are used to indicate that the narrowband numbers of the first signal are all X1, bit state 11 in table 1 may be used to indicate that the narrowband number of the first narrowband is (X1 + 1) modN or is an adjacent narrowband or is a predefined narrowband, and the frequency domain position of the first signal within the narrowband is r1, where r1 may be the number of the RB group of the second signal within the narrowband or the number or index of the lowest RB within the narrowband; or r1 is predefined or configured by the first device, such as r1=0..

Or, in some possible implementation manners, a second state set corresponding to a bit of the first indication information indicates a first narrowband where the first signal is located, and frequency domain positions of the first signal and the second signal in the narrowband are the same, where the second bit state set includes one or more bit states. That is, in the embodiment of the present application, the bit status described above may be used to indicate the narrow band in which the first signal is located (e.g., offset from the narrow band in which the second signal is located). And the positions in the narrow bands of the first signal and the second signal are the same.

Or, in some possible implementation manners, a second state set corresponding to a bit of the first indication information indicates a first narrowband where the first signal is located, and a frequency domain position of the first signal in the narrowband is predefined or configured in a high layer, where the second bit state set includes one or more bit states. That is, in the embodiment of the present application, the bit state described above may be used to indicate a narrow band in which the first signal is located (for example, an offset from a narrow band in which the second signal is located).

For a case that the second state set corresponding to the bit of the first indication information indicates the first narrowband where the first signal is located, in a specific implementation manner, the first indication information indicates that the frequency domain positions of the first signal and the second signal in the narrowband are the same or the frequency domain position of the first signal in the narrowband is predefined or configured in a high layer, a value of the first narrowband of the first signal is p1 or a bit value used for indicating the first indication information is p1, that is, the first narrowband number is p1.

For a case that the second state set corresponding to the bit of the first indication information indicates the first narrowband where the first signal is located, the first indication information indicates that the frequency domain positions of the first signal and the second signal in the narrowband are the same, a value of the first narrowband of the first signal is p1 or a value of a bit used for indicating the first indication information is p1, that is, an offset of the frequency domain position of the first narrowband of the first signal with respect to the frequency domain position of the second narrowband of the second signal is p1. When the frequency domain position of the second narrowband (for example, numbered k 1), then the frequency domain position of the first narrowband is: (k 1+ p 1) mod N, where N represents the number of narrow bands that the first narrow band can use or the number of narrow bands included in the system bandwidth. As an example, N is 16 when the first narrowband is one of the system bandwidths 20M, and N is 8 when the first narrowband is one of the half system bandwidths.

Or in some possible implementations, the position or number of the first narrow band is k1+ p1, which is not limited in this application.

Table 2 shows an example of a second set of bit states corresponding to bits of the first indication information.

TABLE 2

Bit state	Position of the first narrow band
		000	k1 mod N or k1
001	(k 1+ 1) mod N or (k 1+ 1)
		010	(k 1+ 2) mod N or (k 1+ 2)
011	(k 1+ 3) mod N or (k 1+ 3)
		100	(k 1+ 4) mod N or (k 1+ 4)
101	(k 1+ 5) mod N or (k 1+ 5)
		110	(k 1+ 6) mod N or (k 1+ 6)
111	(k 1+ 7) mod N or (k 1+ 7)

As shown in table 2, the first indication information has 3 bits, and the bit state 000 in the first bit state set is used to indicate that the position of the first narrowband is k1 mod N, or to indicate that p1=0; bit state 001 in the first set of bit states is used to indicate the position of the first narrow band as (k 1+ 1) mod N, or to indicate p1=1; and so on. Wherein k1 is the narrowband number or index where the second signal is located; or k1 is predefined or device-configured, e.g. k1=0.

In some embodiments, when the narrow band in which the first signal and the second signal are located is different, the location of the first signal within the narrow band may be predefined or configured by a network device, which is not limited in this application.

For example, the first indication information may include M bits, where 1 bit of the M bits is used to indicate whether the narrowband where the first signal and the second signal are located is the same.

When the 1 bit indicates that the narrow band in which the first signal and the second signal are located is the same, the M-1 bit is used to indicate the position of the first signal within the narrow band. The position within the narrow band may be the RB number or the lowest RB number of the first signal within the narrow band, and may also indicate the relative position to the second signal. For example, M-1 bits may be used to indicate that the frequency domain position within the narrowband of the first signal takes the value q2, i.e. the frequency domain position within the narrowband of the first signal is offset by an amount q2 with respect to the frequency domain position of the second signal within the narrowband. When the frequency domain location (e.g., number) of the second signal within the narrowband is r2, then the location of the first signal within the narrowband is (r 2+ q 2) mod3; or M-1 bits may be used to indicate that the frequency domain position within the narrowband of the first signal takes the value q2, i.e. the frequency domain position within the narrowband of the first signal is q2 or the RB group number within the narrowband of the first signal is q2 or the lowest RB number within the narrowband of the first signal is q2.

When the 1 bit indicates that the narrowband where the first signal and the second signal are located are not the same, the M-1 bit is used to indicate the narrowband location where the first signal is located (i.e. the location of the first narrowband or the narrowband number or the narrowband index). Specifically, M-1 bits may be used to indicate that the position of the first narrowband is p2, that is, the offset of the first narrowband position from the second narrowband is p2, the number of the second narrowband is k2, the system bandwidth includes N narrowbands, and then the frequency domain position of the first narrowband is: (k 2+ p 2) mod N; or M-1 bits may be used to indicate that the first narrowband position is p2, i.e. the first narrowband position is p2 or the first narrowband number is p2 or the index of the first narrowband is p2.

Illustratively, M =3, i.e. 3 bits of information, where 1 bit (e.g. the high order bit) is used to indicate whether the narrowband positions of the first signal and the second signal are the same. When the 1 bit is in the first state, the first signal is in the same narrowband as the second signal, and the remaining 2 bits of the 3 bits are used to indicate the position of the first signal within the narrowband, where the position within the narrowband may be the number of RB groups, or the position within the narrowband may be the number of the lowest RB within the narrowband, or the position within the narrowband may be the offset of the first signal from the position of the second signal within the narrowband (e.g., when the position of the first signal within the narrowband is (P + Q) modN, where Q is the position of the second signal within the narrowband, P is the offset, and N is the number of RB groups included within the narrowband, e.g., N = 3). When the 1 bit is in the second state, the positions of the first signal and the second signal in the narrowband are the same, or the positions of the first signal and the second signal in the narrowband are predefined or configured in a high layer, and the remaining 2 bits indicate the number of the narrowband where the first signal is located, or the index of the narrowband where the second signal is located, or the offset of the narrowband where the first signal is located relative to the narrowband where the second signal is located (e.g., the narrowband where the first signal is located is (P + Q) modN, where Q is the number of the narrowband where the second signal is located, P is the offset, and N is the number of the narrowband included in the system bandwidth). The first state may be 0 and the second state may be 1; alternatively, the first state is 1 and the second state is 0.

Optionally, in this embodiment of the application, x bits of the M bits of the first indication information indicate a shift between a first narrowband where the first signal is located and a second narrowband where the second signal is located, or x bits of the M bits of the first indication information indicate a number of the first narrowband where the first signal is located, and remaining N-x bits of the M bits indicate a shift between a frequency domain position of the first signal within the first narrowband and a frequency domain position of the second signal within the second narrowband, or a frequency domain position of the first signal within the first narrowband.

As an example, when M =4,x =2, even if 2 bits in the first indication information are used to indicate an offset of a first narrow band in which the first signal is located from a second narrow band in which the second signal is located, the remaining 2 bits are used to indicate an offset of a frequency domain position of the first signal within the first narrow band from a frequency domain position of the second signal within the second narrow band.

For example, 2 bits may be used to indicate that the first narrowband position is p3, that is, the offset of the first narrowband position from the second narrowband is p3, the second narrowband is numbered k3, the system bandwidth includes N narrowbands, and then the frequency domain position of the first narrowband is: (k 3+ p 3) mod N; the remaining 2 bits may be used to indicate that the frequency domain position within the narrow band of the first signal takes a value q3, i.e. the frequency domain position within the narrow band of the first signal is offset by an amount q3 with respect to the frequency domain position of the second signal within the narrow band. When the frequency domain location (e.g., number) of the second signal within the narrow band is r3, then the location of the first signal within the narrow band is (r 3+ q 3) mod3.

Or x bits of the M bits of the first indication information indicate an offset of a first narrowband where the first signal is located and a second narrowband where the second signal is located, and the remaining N-x bits of the M bits indicate a frequency domain position of the first signal within the first narrowband. Here, the N-x bits are used to indicate the absolute position of the first signal within the narrow band, i.e. not an offset with respect to the frequency domain position of the second signal within the second narrow band. For example, the N-x bits may indicate the number of least significant bits RB of the first signal within the first narrow band.

Optionally, the frequency domain position of the first signal may be determined according to the first indication information and the first parameter and/or the frequency domain position of the second signal;

when the system bandwidth of the adjacent cell or the serving cell belongs to a first bandwidth set, the first parameter is y1;

when the system bandwidth of the adjacent cell or the serving cell belongs to a second bandwidth set, the first parameter is y2;

wherein the elements in the first set of bandwidths are smaller than the elements in the second set of bandwidths, y1< y2. Wherein the first parameter may be understood as a granularity of an interval of the frequency domain position of the first signal.

As an example, the first narrowband number of the first signal, or the lowest RB number (index) of the first signal, or the RB group number of the first signal may be expressed as:

the frequency domain position of the first signal = (k + P x Y) mod N,

wherein k represents the number of the narrow band where the second signal is located, or the lowest RB number (index) of the second signal, or the frequency position of the RB group number of the second signal, or is 0, p is a value of the frequency domain position of the first narrow band indicated by the first indication information, Y represents the first parameter, and N represents the number of narrow bands or the number of RBs or the number of RB groups that can be used by the first narrow band, or the number of narrow bands included in the system bandwidth.

Or in some possible implementations, the frequency domain position of the first signal can be determined according to the first indication information and the first parameter. The first narrowband number of the first signal, or the lowest RB number (index) of the first signal, or the RB group number of the first signal is k + P × Y, where k denotes the narrowband number where the second signal is located, or the lowest RB number (index) of the second signal, or the frequency position of the RB group number of the second signal, or 0,p is a value of the frequency domain position of the first narrowband indicated by the first indication information, and Y denotes the first parameter, which is not limited in this embodiment of the present application.

Or in some possible implementations, the frequency domain position of the first signal can be determined according to the first indication information and the first parameter. The first narrowband number of the first signal, or the lowest RB number (index) of the first signal, or the RB group number of the first signal is P × Y, where P is a value of a frequency domain position of the first narrowband indicated by the first indication information, and Y represents the first parameter.

Table 3 shows an example of a third set of bit states corresponding to bits of the first indication information.

TABLE 3

Bit state	Frequency domain position of the first signal
		00	k4 mod N or k4
01	(k 4+1 x Y1) mod N or (k 4+1 x Y1)
		10	(k 4+2 y1) mod N or (k 4+2 y1)
11	(k 4+3 Y1) mod N or (k 4+3 Y1)

Wherein the first parameter is Y1, and the possible values thereof are 1, or 2, or 4, or 8, or 16, k4 represents the narrowband number where the second signal is located, or the lowest RB number (index) of the second signal, or the frequency position of the RB group number of the second signal, or 0, n represents the number of the narrowband or RB group number that can be used by the first narrowband, or the number of the narrowband included in the system bandwidth.

Optionally, the first parameter Y1 is determined according to a channel bandwidth (i.e. a system bandwidth). Table 4 shows an example of the system bandwidth. Possible values of Y1 for different channel bandwidths are shown in table 4.

TABLE 4

Wherein the first value is not less than the second value and not more than the third value and not more than the fourth value and not more than the fifth value and not more than the sixth value.

Alternatively, the following table 5 shows possible values of the first to sixth values.

TABLE 5

Table 6 shows an example of a fourth bit state set corresponding to bits of the first indication information.

TABLE 6

Wherein, the possible value of the first parameter Y2 is 1, or 2, or 4, or 8, or 16. Where k5 denotes the narrowband number where the second signal is located, or the lowest RB number (index) of the second signal, or the frequency position of the RB group number of the second signal, or is 0, n denotes the number of narrowband or RB groups or the number of RB groups that can be used by the first narrowband, or is the number of narrowband included in the system bandwidth.

Optionally, Y2 is determined according to the system bandwidth. Possible values of Y2 for different channel bandwidths are shown in table 7.

TABLE 7

Alternatively, table 8 below shows possible values of the first to sixth values.

TABLE 8

Table 9 shows an example of a fourth bit state set corresponding to bits of the first indication information.

TABLE 9

Wherein, the possible value of the first parameter Y3 is 1, or 2, or 4, or 6. Where k6 denotes the narrowband number where the second signal is located, or the lowest RB number (index) of the second signal, or the frequency location of the RB group number of the second signal, or 0, n denotes the number of narrowbands or RBs or RB group number that the first narrowband can use, or the number of narrowbands included in the system bandwidth.

Optionally, Y3 is determined according to the channel bandwidth. Possible values for Y2 for different channel bandwidths are shown in table 10.

TABLE 10

Alternatively, the following table 11 shows possible values of the first to sixth values.

TABLE 11

As can be seen from tables 3 to 11, the larger the element in the channel bandwidth set is, the larger the value of the corresponding first parameter Y is.

In one implementation, the lowest RB of the first signal is numbered k × N + q, where N is a positive integer greater than or equal to 0 and k is 2, or 4, or 8, or 16, or 32, q is an integer greater than or equal to 0 and less than k. For example, the lowest RB number of the first signal is even or odd, i.e., 0,2,4 \823098or 1,3,5 \823097, and then 6 bits are required to indicate the frequency domain position of the first signal, saving signaling overhead. For example, the first signal has the lowest RB number of 0,4,8 \ 823096, and only 5 bits are needed to indicate the frequency domain position of the first signal, thereby saving signaling overhead.

220, the network device sends the first indication information to the terminal device.

Correspondingly, the terminal device receives the first indication information from the network device.

And 230, the terminal equipment determines the frequency domain position of the first signal according to the first indication information.

Specifically, the terminal device may determine the frequency domain position of the first signal according to the first indication information and the frequency domain position of the second signal.

The terminal device measures the first signal according to the frequency domain position of the first signal 240.

Specifically, the terminal device may refer to the description in the prior art for measuring the first signal, and for brevity, the description is not repeated here.

It should be noted that, in this embodiment of the present application, the frequency domain position of the first signal may be the frequency domain position of the lowest bit RB of the first signal, or the frequency domain position of the highest bit RB of the first signal, which is not limited in this embodiment of the present application.

Therefore, in the embodiment of the present application, the frequency domain position of the first signal can be determined according to the frequency domain position of the second signal and the first indication information, that is, the first indication information is used to indicate an offset of the frequency domain position of the first signal with respect to the frequency domain position of the second signal, instead of indicating an absolute position of the first signal in the system bandwidth, so that the size of the frequency domain position indication information can be saved, and further, the signaling overhead of the system can be saved.

In addition, in the configuration information of RSS described above, a time offset (timeOffset) is used to indicate an offset amount of the time domain of RSS. For time periods (periodicities) of 320ms, 640ms, and 1280ms, when one data frame (10 ms may be used as an example) is used as the granularity of the time offset, the value of the time offset (timeOffset) of the RSS ranges from 0 to 31, and thus 5 bits of corresponding bit states (32 bits of corresponding 5 bits) are required to indicate the value of the time offset. This results in a large signaling overhead for RSS.

Fig. 4 shows a schematic flow chart of a communication method provided in an embodiment of the present application. The communication method in fig. 4 can be applied to the communication system in fig. 1. As an example, the network device may be an example of a first device, and the terminal device may be an example of a second device, where the terminal device may be any one of the terminal devices described in fig. 1 above, but this embodiment of the present application is not limited thereto, for example, the first device may also be the terminal device. The first device may be a device with a transmitting capability, and the second device may be a device with a receiving capability.

The communication method is implemented by causing the method to include 410 and 420.

The network device determines 410 a second indication information indicating a time offset (time offset) of the first signal of the terminal device, wherein an actual value of the time offset of the first signal is determined based on the time offset, the first time unit and the time duration. Here, the duration may be understood as a period of the first signal.

Optionally, in this embodiment of the application, the time offset of the first signal may be a time offset of the first signal with respect to the measurement interval, that is, the time offset may be a difference between the time offset of the measurement interval and the time offset of the first signal.

As an example, the actual time offset value of the first signal is an integer multiple of the product of the time offset and the first time unit. That is, in the embodiment of the present application, the actual time offset value of the first signal is indicated by taking the first time unit as the minimum offset granularity.

Wherein the range of values of the time offset is related to the duration of the first signal. As an example, the duration of the first signal may be a period in which the network device transmits the first signal, for example, 160ms, 320ms, 640ms, or 1280ms, or the like, which is not limited in this embodiment.

The duration of the first signal is a first time set, the time offset ranges from 0 to w1, the first time unit is t1, and the first time set includes the durations of one or more first signals.

The duration of the first signal is a second set of times, the time offset ranges from 0 to w2, the first time unit is t2, and the second set of times includes the durations of the one or more first signals.

The elements in the first time set are smaller than the elements in the second time set, w1 is smaller than or equal to w2, and t1 is smaller than or equal to t2. A first time set of elements is less than a second time set of elements, which may be understood as any element in the first combination being less than any element in the second time set.

In one possible implementation, the product of the maximum value of the time offset (or the maximum value of the applied offset plus 1) and the first time unit is the same as the duration of the first signal.

As an example, when the duration of the first signal is 160ms, the maximum value of the time offset is 7, that is, the value of the time offset ranges from 0 to 7, and the first time unit is 20ms;

when the duration of the first signal is 320ms, the maximum value of the time offset is 15, namely the value range of the time offset is 0-15, and the first time unit is 20ms;

when the duration of the first signal is 640ms, the maximum value of the time offset is 15, namely the value range of the time offset is 0-15, and the first time unit is 40ms;

when the duration of the first signal is 1280ms, the maximum value of the time offset is 15, that is, the value range of the time offset is 0 to 15, and the first time unit is 80ms.

At this time, 4 bits are required to indicate the time offset, and compared with the prior art in which 5 bits are used to indicate the time offset, the embodiment of the present application can save signaling overhead of 1 bit.

As an example, when the duration of the first signal is 160ms, the maximum value of the time offset is 3, that is, the value of the time offset ranges from 0 to 3, and the first time unit is 40ms;

when the duration of the first signal is 320ms, the maximum value of the time offset is 7, namely the value range of the time offset is 0-7, and the first time unit is 40ms;

when the duration of the first signal is 640ms, the maximum value of the time offset is 7, namely the value range of the time offset is 0-7, and the first time unit is 80ms;

when the duration of the first signal is 1280ms, the maximum value of the time offset is 7, i.e., the value range of the time offset is 0 to 7, and the first time unit is 160ms.

At this time, 3 bits are required to indicate the time offset, and compared with the prior art in which 5 bits are used to indicate the time offset, the embodiment of the present application can save signaling overhead of 2 bits.

As an example, when the duration of the first signal is 160ms, the maximum value of the time offset is 1, that is, the value of the time offset ranges from 0 to 1, and the first time unit is 80ms;

when the duration of the first signal is 320ms, the maximum value of the time offset is 3, namely the value range of the time offset is 0-3, and the first time unit is 80ms;

when the duration of the first signal is 640ms, the maximum value of the time offset is 3, namely the value range of the time offset is 0-3, and the first time unit is 160ms;

when the duration of the first signal is 1280ms, the maximum value of the time offset is 3, that is, the value range of the time offset is 0 to 3, and the first time unit is 160ms.

At this time, 2 bits are required to indicate the time offset, and compared with the prior art in which 5 bits are used to indicate the time offset, the embodiment of the present application can save signaling overhead of 3 bits.

when the duration of the first signal is 1280ms, the maximum value of the time offset is 7, that is, the value range of the time offset is 0 to 7, and the first time unit is 160ms.

It is understood that the first time unit is 20ms or 40ms or 80ms or 160ms or 320ms, and it is also understood that the first time unit is 2frames or 4 frames or 8 frames or 16 frames or 32 frames. This time a frame length of 10ms.

It should be noted that any formula variations or tables or other predefined rules that yield the same results as the examples are within the scope of the embodiments of the present application.

Optionally, in this embodiment of the present application, the first time unit is N times of a data frame (or frame), where N is a positive integer greater than or equal to 1. The value of N may be 2,4, 8, or the like, for example, and this is not limited in the embodiments of the present application. As an example, the length of one data frame may be 10ms, and the length of the first time unit may be 20ms,40ms, or 80ms.

It should be noted that, the length of one data frame is 10ms for example, and the data frame may also be other time domain length units, such as a time slot, a subframe, a symbol, ms, us, or s, which is not limited in this embodiment of the present application.

Table 12 shows an example of the time offset value in the embodiment of the present application.

TABLE 12

As shown in table 12, the length of the first time unit is 2 data frames (frames).

For a duration of 160ms for the first signal, the actual time offset value is the product of the time offset (timeoffset) and the first time unit. Wherein, the value range of timeoffset is 0-7. That is, the offset indication is performed at the granularity of 2 data frames at this time.

Described another way, for a duration of 160ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 7 and K is 2.

For a duration of 320ms for the first signal, the actual time offset value is the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 15. That is, the offset indication is performed at the granularity of 2 data frames at this time.

Described another way, for a duration of 320ms of the first signal, the actual time offset value is a timeoffset frame, where timeoffset ranges from 0 to 15 and K is 2.

For a duration of 640ms for the first signal, the actual time offset value is 2 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 15. That is, the offset indication is performed at a granularity of 4 data frames at this time.

Described another way, for a duration of 640ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 15 and K is 4.

For a duration of 1280ms of the first signal, the actual time offset value is 4 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 15. That is, the offset indication is performed at the granularity of 8 data frames at this time.

Described another way, for a duration of 1280ms of the first signal, the actual time offset value is timeoffset x K frames, where timeoffset ranges from 0 to 15 and K is 8.

Table 13 shows another example of the time offset value in the embodiment of the present application.

Watch 13

As shown in table 13, wherein the length of the first time unit is 4 data frames (frames).

For a duration of 160ms for the first signal, the actual time offset value is the product of the time offset (timeoffset) and the first time unit. Wherein, the value range of the timeoffset is 0-3. That is, the offset indication is performed at a granularity of 4 data frames at this time.

Described another way, for a duration of 160ms of the first signal, the actual time offset value is the timeoffset _ K _ frames, where timeoffset ranges from 0 to 3 and K is 4.

For a duration of 320ms for the first signal, the actual time offset value is the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at the granularity of 4 data frames at this time.

Described another way, for a duration of 320ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 7 and K is 4.

For a duration of 640ms for the first signal, the actual time offset value is 2 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at the granularity of 8 data frames at this time.

Described another way, for a duration of 640ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 7 and K is 8.

For a duration of 1280ms for the first signal, the actual time offset value is 4 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at the granularity of 16 data frames at this time.

Described another way, for a duration of 1280ms of the first signal, the actual time offset value is timeoffset x K frames, where timeoffset ranges from 0 to 7 and K is 16.

Table 14 shows another example of the time offset value in the embodiment of the present application.

TABLE 14

Duration	Value range of timeoffset	Actual value of timeoffset
			160ms	0～1	timeoffset*8frames
320ms	0～3	timeoffset*8frames
			640ms	0～3	timeoffset28frames
1280ms	0～3	timeoffset48frames

As shown in table 14, wherein the length of the first time unit is 8 data frames (frames).

For a duration of 160ms for the first signal, the actual time offset value is the product of the time offset (timeoffset) and the first time unit. Wherein, the value range of the timeoffset is 0-1. That is, the offset indication is performed at the granularity of 8 data frames at this time.

Described another way, for a duration of 160ms of the first signal, the actual time offset value is the timeoffset _ K _ frames, where timeoffset ranges from 0 to 1 and K is 8.

For a duration of 320ms for the first signal, the actual time offset value is the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 3. That is, the offset indication is performed at the granularity of 8 data frames at this time.

Described another way, for a duration of 320ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 3 and K is 8.

For a duration of 640ms for the first signal, the actual time offset value is 2 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 3. That is, the offset indication is performed at the granularity of 16 data frames at this time.

Described another way, for a duration of 640ms of the first signal, the actual time offset value is the timeoffset _ K _ frames, where timeoffset ranges from 0 to 3 and K is 16.

For a duration of 1280ms of the first signal, the actual time offset value is 4 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 3. That is, the offset indication is performed at the granularity of 32 data frames at this time.

Described another way, for a duration of 1280ms of the first signal, the actual time offset value is the timeoffset x K frames, where timeoffset ranges from 0 to 3 and K is 32.

Table 15 shows another example of the time offset value in the embodiment of the present application.

Watch 15

Duration	Value range of timeoffset	Actual value of timeoffset
			160ms	0～7	timeoffset*2frames
320ms	0～7	timeoffset*4frames
			640ms	0～7	timeoffset24frames
1280ms	0～7	timeoffset44frames

As shown in table 15, for the duration of the first signal being 160ms, the length of the first time unit is 2 data frames (frames), and the actual time offset value is the product of the time offset (timeoffset) and the first time unit. Wherein, the value range of the timeoffset is 0-7. That is, the offset indication is performed at the granularity of 2 data frames at this time.

For a duration of 320ms of the first signal, the first time unit is 4 data frames (frames) in length, and the actual time offset value is the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at a granularity of 4 data frames at this time.

For a duration of 640ms of the first signal, the length of the first time unit is 4 data frames (frames), i.e. the actual time offset value is 2 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at the granularity of 8 data frames at this time.

For a duration of the first signal of 1280ms, the first time unit is 4 data frames (frames) in length and the actual time offset value is 4 times the product of the time offset and the first time unit. Wherein the time offset ranges from 0 to 7. That is, the offset indication is performed at the granularity of 16 data frames at this time.

It should be noted that, when the value range of the timeoffset is 0 to 1, the second indication information needs 1 bit to indicate. When the timeoffset ranges from 0 to 3, the second indication information needs 2 bits to indicate. When the value of timeoffset ranges from 0 to 7, the second indication information needs 3 bits to indicate. When the timeoffset ranges from 0 to 15, the second indication information needs 4 bits to indicate. Therefore, the system signaling overhead can be saved compared to the prior art that needs 5 bits to indicate the timeoffset.

As an example, the first signal is a resynchronization signal RSS of a local cell or an adjacent cell of the terminal device, or another signal, which is not limited in this embodiment of the present application.

Fig. 5 shows a schematic diagram of an RSS measurement in the prior art. As shown in fig. 5, the network device may configure a measurement interval (measurement gap) for each terminal device in a semi-static manner at the same time, for example, the measurement interval may be 40ms, and the duration of the measurement interval in each measurement interval period is 6ms. In a method for configuring the time offset of the RSS, the time offset of the RSS of a neighboring cell relative to the RSS of the local cell is A times of a subframe, wherein A is a positive integer greater than or equal to 1. However, when the time offset configuration of the neighboring cell is not appropriate, the RSS in the neighboring cell is not measured by the terminal device.

As an example, the network device may configure the RSS of the own cell to have a signal length of 1696s and a RSS period (periodicity) of 160ms, so that the terminal device may measure the RSS of the own cell in the first measurement period and the fifth measurement period shown in fig. 5.

As an example, the RSS of the neighboring cell 1 is time-shifted by 4 subframes (one subframe is 10ms in length and 4 subframes is 40ms in length) with respect to the own cell, and at this time, the terminal device may measure the RSS of the neighboring cell 1 in the second measurement period and the sixth measurement period (not shown in fig. 5) in fig. 5.

As an example, the RSS of the neighboring cell 1 is time-shifted from the own cell by 2 subframes (the length of 2 subframes is 20 ms), and at this time, since the terminal device does not perform measurement for the time period corresponding to the RSS of the neighboring cell 2, the terminal device cannot measure the RSS of the neighboring cell 2.

Optionally, in this embodiment of the application, in order to enable the terminal device to measure the RSS of the neighboring cell, the first time unit may be set to be M times of a measurement interval period of the terminal device, where M is a positive integer greater than or equal to 1. That is, the actual time offset value of the RSS of the neighbor cell is an integral multiple of the measurement interval period.

As an example, when the measurement interval period is 20ms, the first time unit may be 20ms,40ms, or 80ms, and the like, which is not limited in the embodiment of the present application.

As an example, when the measurement interval period is 40ms, the first time unit may be 40ms,80ms, 160ms, or the like, which is not limited in this embodiment.

As an example, when the measurement interval period is 80ms, the first time unit may be 80ms, or 160ms, etc., which is not limited in this embodiment of the application.

Therefore, in the embodiment of the present application, the first time unit is set to be an integer multiple of the measurement interval period of the terminal device, so that the terminal device is always in a state of detecting the first signal when the network device sends the first signal.

In addition, for the FDD duplex mode, different cells in the same network may be asynchronous, so that although RSS can be measured simultaneously by adjacent cells according to a certain configuration, RSS cannot be measured by the terminal device due to the asynchronism between the adjacent cells and the cell.

As an example, as shown in fig. 5, the RSS of the neighbor cell 3 is theoretically as shown by the dashed RSS therein, but due to the non-synchronization introduced time difference, the RSS of the neighbor cell 3 is actually as shown by its corresponding solid RSS. At this time, since the terminal device does not perform measurement in the time period corresponding to the actual RSS of the neighboring cell 3, the terminal device cannot measure the RSS of the neighboring cell 3.

Based on this, in some optional embodiments of the present application, the actual time offset value of the first signal may be determined according to the time offset, the first time unit, and a second parameter and the duration, where the second parameter is determined according to a synchronization state between the serving cell where the terminal device is located and a neighboring cell of the serving cell where the terminal device is located.

Table 16 shows an example of the time offset value in the embodiment of the present application.

TABLE 16

Table 17 shows an example of the time offset value in the embodiment of the present application.

TABLE 17

Table 18 shows an example of the time offset value in the embodiment of the present application.

Watch 18

Table 19 shows an example of the time offset value in the embodiment of the present application.

Watch 19

Unlike tables 12 to 15, tables 16 to 19 correct the time offset using the second parameter x, or correct the actual time offset value using the second parameter x. As an example, for the duration of 160ms in table 5, the actual time offset value timeoffset 2frames is corrected to (timeoffset + x) × 2frames, or the actual time offset value timeoffset 2frames is corrected to timeoffset 2frames +x.

Therefore, in the embodiment of the present application, by correcting the time offset value or the actual time offset value by using the second parameter, the time difference asynchronously introduced can be eliminated, so that the terminal device can detect the first signal, thereby avoiding the waste of signaling and improving the system throughput.

Optionally, the second parameter may be configured by the network device, or measured by the terminal device, or preset, which is not specifically limited in this embodiment of the present application.

420, the network device sends the second indication information to the terminal device. Correspondingly, the terminal equipment receives the second indication information.

And 430, the terminal equipment determines the actual time offset value of the first signal according to the second indication information.

Specifically, the terminal device may determine the actual time offset value of the first signal according to the time offset, the first time unit and the duration value indicated by the second indication information.

The terminal device measures 440 the first signal based on the actual time offset value of the first signal.

Therefore, in the embodiment of the present application, compared with the prior art in which the actual offset value of the first signal is indicated in units of one data frame, the actual offset value of the first signal in the embodiment of the present application is indicated in granularity of a first time unit, and when the length of the first time unit is greater than the length of one data frame, because the indication granularity of the time offset is increased, the embodiment of the present application can reduce the value range of the time offset, further reduce the number of bits of information used for indicating the time offset in the configuration channel of the first signal, further reduce signaling overhead, and improve system throughput. In addition, for the terminal device, when the signaling overhead is small, power consumption can be saved.

The embodiment of the present application further provides another communication method, where the network device may determine third indication information, where the third indication information includes N bits for indicating the first channel quality information, and Q bits for indicating the second channel quality information, where N > Q. Wherein the Q bits for indicating the second channel quality information are Q bits of a first position of the N bits for indicating the first channel quality information, or the Q bits are Q bits of a first position of the N bits, and the first position may be a highest Q bits or a lowest Q bits. Alternatively, Q =2,n =4 or 8, but the embodiment of the present application is not limited thereto.

The channel state information includes one or a combination of: a Channel Quality Indicator (CQI), a number of repetitions of the first channel, a Reference Signal Received Quality (RSRQ), a Reference Signal Received Power (RSRP), a number of repetitions of the first channel. The first channel may include a physical downlink data channel, or a physical uplink data channel, or a physical downlink control channel, or a physical uplink control channel, or a reference physical downlink data channel, or a reference physical uplink data channel, or a reference physical downlink control channel, or a reference physical uplink control channel, or the like.

The communication method provided by the embodiment of the present application is described in detail above with reference to fig. 1 to 5, and the communication apparatus provided by the embodiment of the present application is described in detail below with reference to fig. 6 and 7.

Fig. 6 shows a schematic block diagram of a communication apparatus 600 provided in an embodiment of the present application. As shown in fig. 6, the apparatus 600 may include a transceiving unit 610 and a processing unit 620.

In a possible case, the apparatus 600 may correspond to the network device described in the foregoing method, and may also correspond to a chip or a component of the network device, and each module or unit in the apparatus 600 may be respectively configured to execute each action or process performed by the network device in the foregoing method.

A processing unit 620, configured to determine first indication information, where the first indication information is used to indicate frequency domain position information of a first signal of a second device, so that the frequency domain position of the first signal can be determined according to a frequency domain position where a second signal is located and the first indication information, where the first signal is a resynchronization signal of an adjacent cell of the second device, and the second signal is a resynchronization signal of a serving cell of the second device;

the transceiver unit 610 is configured to send the first indication information to the second device.

As an optional embodiment, a first bit state set corresponding to a bit of the first indication information indicates a frequency domain position of the first signal within a narrowband where the second signal is located, where the first bit state set includes one or more bit states; or

A second state set corresponding to bits of the first indication information indicates a first narrow band where the first signal is located, the frequency domain positions of the first signal and the second signal in the narrow band are the same, and the second bit state set comprises one or more bit states.

As an optional embodiment, k bits of the N bits of the first indication information indicate an offset of a first narrowband where the first signal is located and a second narrowband where the second signal is located;

the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband and a frequency domain position of the second signal within the second narrowband, or the remaining N-k bits of the N bits indicate a frequency domain position of the first signal within the first narrowband.

As an optional embodiment, the frequency domain position of the first signal may be determined according to the frequency domain position of the second signal, the first indication information, and a first parameter, where the first parameter is an interval granularity of the frequency domain position of the first signal;

It should be understood that, for the specific process of each unit in the apparatus 600 to execute the corresponding step described above, reference is made to the description of the network device in the foregoing embodiment of the method, and for brevity, no further description is provided here.

In a possible case, the apparatus 600 may correspond to the terminal device described in the foregoing method, and may also correspond to a chip or a component of the terminal device, and each module or unit in the apparatus 600 may be respectively configured to execute each action or process performed by the terminal device in the foregoing method.

A transceiver module 610, configured to receive first indication information sent by a first device, where the first indication information is used to indicate frequency domain location information of a first signal of the second device, and the first signal is a resynchronization signal of an adjacent cell of the second device;

a processing module 620, configured to determine a frequency domain position of the first signal according to the first indication information and a frequency domain position of a second signal, where the second signal is a resynchronization signal of a serving cell of the second device;

the processing module 620 is further configured to measure the first signal according to the frequency domain position of the first signal.

As an alternative embodiment, the processing module 620 is specifically configured to:

determining the frequency domain position of the first signal according to the first indication information, the frequency domain position of the second signal and a first parameter, wherein the first parameter is the interval granularity of the frequency domain position of the first signal;

It should be understood that, for the specific process of each unit in the apparatus 600 to execute the corresponding step described above, reference is made to the description of the terminal device in the foregoing embodiment of the method, and for brevity, no further description is given here.

A processing module 620, configured to determine second indication information, where the second indication information is used to indicate a time offset of a first signal of a second device, so that an actual time offset value of the first signal can be determined according to the time offset, a first time unit and a duration, where the first time unit is N times of one data frame when the duration of the first signal is 160ms, where N is a positive integer greater than 1, or the first time unit is M times of a measurement interval period of the second device, where M is a positive integer;

a transceiver module 610, configured to send the second indication information to the second device.

In an alternative embodiment, the actual time offset value of the first signal is determined according to the time offset, the first time unit, the duration and a second parameter, wherein the second parameter is determined according to the synchronization status between the serving cell of the second device and the neighboring cell of the second device.

In an alternative embodiment, when the first signal has a duration of 160ms, the actual time offset value of the first signal is a time offset _ K _ frames, where the time offset ranges from 0 to 1, K is 8, or ranges from 0 to 3, K is 4, or ranges from 0 to 7, K is 2, where kframe is the first time unit;

when the first signal duration is 1280ms, the actual time offset value of the first signal is timeoffset x K frames, wherein timeoffset ranges from 0 to 3, K is 32, or timeoffset ranges from 0 to 7, K is 16, or timeoffset ranges from 0 to 15, K is 8, wherein kframe is the first time unit;

The transceiver module 610 is configured to receive second indication information sent by the first device, where the second indication information is used to indicate a time offset of the first signal of the second device;

a processing module 620, configured to determine an actual time offset value of the first signal according to the time offset, a first time unit and a duration value, where the first time unit is N times of a data frame when the duration of the first signal is 160ms, where N is a positive integer greater than 1;

the processing module 620 is further configured to measure the first signal by the second device according to an actual time offset value of the first signal.

In an alternative embodiment, the processing module 620 is specifically configured to:

determining an actual time offset value of the first signal based on the time offset, the first time unit, the duration value and a second parameter, wherein the second parameter is determined based on a synchronization status between a serving cell of the second device and a neighboring cell of the second device.

The functions of the apparatus 600 of the above aspects, which implement the corresponding steps executed by the first device or the second device in the above methods, may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software comprises one or more modules corresponding to the functions; for example, the transmitting unit may be replaced by a transmitter, the receiving unit may be replaced by a receiver, other units, such as the determining unit, may be replaced by a processor, and the transceiving operation and the related processing operation in the respective method embodiments are respectively performed.

In particular implementations, the processor may be configured to perform, for example and without limitation, baseband related processing, and the transceiver may be configured to perform, for example and without limitation, radio frequency transceiving. The above devices may be respectively disposed on separate chips, or at least a part or all of the devices may be disposed on the same chip. For example, the processor may be further divided into an analog baseband processor and a digital baseband processor, wherein the analog baseband processor may be integrated with the transceiver on the same chip, and the digital baseband processor may be disposed on a separate chip. With the development of integrated circuit technology, more and more devices can be integrated on the same chip, for example, a digital baseband processor can be integrated on the same chip with various application processors (such as, but not limited to, a graphics processor, a multimedia processor, etc.). Such a chip may be referred to as a System On Chip (SOC). Whether each device is separately disposed on a different chip or integrated on one or more chips will often depend on the specific needs of the product design. The embodiment of the present application does not limit the specific implementation form of the above device.

It is understood that, for the processor referred to in the foregoing embodiments, the functions referred to in any design of the foregoing embodiments of the present application can be respectively implemented by a hardware platform having a processor and a communication interface, and based on this, as shown in fig. 7, the present application embodiment provides a schematic block diagram of a communication apparatus 700, where the apparatus 700 includes: a processor 710, a transceiver 720, and a memory 730. The processor 710, the transceiver 720 and the memory 730 are in communication with each other through an internal connection path, the memory 730 is used for storing instructions, and the processor 710 is used for executing the instructions stored in the memory 730 to control the transceiver 720 to transmit and/or receive signals.

It should be understood that the apparatus 600 in fig. 6 in this embodiment of the present application may be implemented by the apparatus 700 in fig. 7, and may be configured to perform each step and/or flow corresponding to the first device or the second device in the foregoing method embodiments.

It should be understood that the various design-related methods, procedures, operations, or steps described in the embodiments of this application can be implemented in a one-to-one correspondence manner through computer software, electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in hardware or software depends on specific applications and design constraints of the technical solution, for example, aspects such as software and hardware decoupling with good generality and low cost are considered, and the functions can be implemented by adopting a mode of executing program instructions, or aspects such as system performance and reliability are considered, and special circuits are adopted to implement the functions. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

According to the method provided by the embodiment of the present application, the present application further provides a computer program product, which includes: computer program code which, when run on a computer, causes the computer to perform the method in the above embodiments. The various embodiments in this application may also be combined with each other.

According to the method provided by the embodiment of the present application, the present application also provides a computer readable medium, the computer readable medium stores program code, and when the program code runs on a computer, the computer is caused to execute the method in the above embodiment.

In the embodiment of the present application, it should be noted that the above method embodiments of the embodiment of the present application may be applied to a processor, or implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may be located in ram, flash, rom, prom, or eprom, registers, etc. as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and combines hardware thereof to complete the steps of the method.

It will be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. There are many different types of RAM, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

The appearances of the phrases "first," "second," and the like in this application are only for purposes of distinguishing between different items and the phrases "first," "second," and the like do not by themselves limit the actual order or function of the items so modified. Any embodiment or design described herein as "exemplary," e.g., "optionally" or "in certain implementations" is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of these words is intended to present relevant concepts in a concrete fashion.

Various objects such as various messages/information/devices/network elements/systems/devices/operations/etc. that may appear in the present application are named, it is understood that these specific names do not constitute limitations on related objects, and the named names may vary with factors such as scenes, contexts, or usage habits, and the understanding of the technical meaning of the technical terms in the present application should be mainly determined from the functions and technical effects embodied/performed in the technical solutions.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product may include one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored on a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital Subscriber (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic disk), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

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

Claims

1. A method of communication, comprising:

the method comprises the steps that first indication information is determined by first equipment, wherein the first indication information is used for indicating frequency domain position information of a first signal of second equipment, so that the frequency domain position of the first signal can be determined according to the frequency domain position of a second signal and the first indication information, the first indication information comprises 1 bit used for indicating whether narrow bands of the first signal and the second signal are the same or not, the first signal is a resynchronization signal of an adjacent cell of the second equipment, and the second signal is a resynchronization signal of a serving cell of the second equipment;

2. The method of claim 1,

the first indication information is used for indicating frequency domain position information of a first signal of a second device, and comprises:

A second bit state set corresponding to bits of the first indication information indicates a first narrow band where the first signal is located, and frequency domain positions of the first signal and the second signal in the narrow band are the same, where the second bit state set includes one or more bit states.

3. The method of claim 1,

4. The method according to any one of claims 1 to 3,

the frequency domain position of the first signal can be determined according to the frequency domain position of the second signal, the first indication information and a first parameter, wherein the first parameter is the interval granularity of the frequency domain position of the first signal;

5. A method of communication, comprising:

the method comprises the steps that a second device receives first indication information sent by a first device, wherein the first indication information is used for indicating frequency domain position information of a first signal of the second device, the first indication information comprises 1 bit used for indicating whether narrow bands of the first signal and a second signal are the same or not, and the first signal is a resynchronization signal of a neighboring cell of the second device;

the second device determines the frequency domain position of the first signal according to the first indication information and the frequency domain position of the second signal, wherein the second signal is a resynchronization signal of a serving cell of the second device;

6. The method of claim 5,

A second bit state set corresponding to bits of the first indication information indicates a first narrow band where the first signal is located, and frequency domain positions of the first signal and the second signal in the narrow band are the same, and the second bit state set includes one or more bit states.

7. The method of claim 5,

8. The method according to any one of claims 5 to 7, wherein the second device determines the frequency domain position of the first signal according to the first indication information and the frequency domain position of the second signal, and the method comprises:

9. A communications apparatus, comprising:

a processing module, configured to determine first indication information, where the first indication information is used to indicate frequency domain position information of a first signal of a second device, so that the frequency domain position of the first signal can be determined according to a frequency domain position where a second signal is located and the first indication information, where the first indication information includes 1 bit used to indicate whether a narrowband where the first signal and the second signal are located is the same, where the first signal is a resynchronization signal of an adjacent cell of the second device, and the second signal is a resynchronization signal of a serving cell of the second device;

and the transceiver module is used for sending the first indication information to the second equipment.

10. The apparatus of claim 9,

11. The apparatus of claim 9,

12. The apparatus according to any one of claims 9 to 11,

13. A communications apparatus, comprising:

a transceiver module, configured to receive first indication information sent by a first device, where the first indication information is used to indicate frequency domain location information of a first signal of a second device, and the first indication information includes 1 bit and is used to indicate whether narrowband where the first signal and a second signal are located is the same or not, where the first signal is a resynchronization signal of an adjacent cell of the second device;

a processing module, configured to determine a frequency domain position of the first signal according to the first indication information and a frequency domain position where the second signal is located, where the second signal is a resynchronization signal of a serving cell of the second device;

the processing module is further configured to measure the first signal according to the frequency domain position where the first signal is located.

14. The apparatus of claim 13,

15. The apparatus of claim 13,

16. The apparatus according to any one of claims 13 to 15, wherein the processing module is specifically configured to:

17. A communications apparatus, comprising:

a processor coupled with a memory, the memory to store a program or instructions that, when executed by the processor, cause the apparatus to perform the method of communicating of any of claims 1 to 8.

18. A computer-readable storage medium, having stored thereon a computer program which, when run on a computer, causes the computer to carry out the method of communication of any one of claims 1 to 8.