WO2018028343A1 - Signal transmission method and device - Google Patents

Abstract

The embodiments of the invention disclose a signal transmission method and device. The method comprises: transmitting, in a first frequency band of a plurality of frequency bands in a system frequency range, a first synchronization signal or a first part of a synchronization signal; and transmitting, in a second frequency band of the plurality of frequency bands in the system frequency range, a second synchronization signal or a second part of the synchronization signal. The first and second frequency bands are different. The signal transmission method and device in the embodiments of the invention can increase efficiency of timing or frequency synchronization.

Description

Method and apparatus for transmitting signals

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No. No. No.

Technical field

Embodiments of the present application relate to the field of communications, and, more particularly, to a method and apparatus for transmitting signals.

Background technique

In the traditional cellular communication system, the network side periodically broadcasts a downlink synchronization signal to the coverage area in a predetermined manner by the base station, so that the terminal equipment that needs to access the network can obtain synchronization of the downlink communication link before accessing the network. And correctly obtain the communication system information required to access the network.

In the latest air interface design process for 5G, different frequency segments for the system carrier are proposed, and different design parameters can be used, for example, different subcarrier bandwidths can be used. At the same time, terminal devices using different frequency segments need to share a common synchronization signal, such as the system synchronization signal on frequency segment 0. Since the terminal device needs to periodically calibrate the downlink synchronization information, including the time and frequency, when the terminal device works on other frequency segments than the frequency segment 0, the frequency segment 0 needs to be re-accessed to acquire the system synchronization information. Since different frequency segments may adopt different design parameters, especially when the subcarrier spacings adopted by different frequency segments are different, the terminal device needs to adjust the tuning function of the terminal device, so that subcarriers of different bandwidths can be demodulated. During the tuning process, efficient data transmission is not possible.

Therefore, improving the efficiency of time-frequency synchronization has become a technical problem to be solved in the hybrid system parameter configuration mode.

Summary of the invention

The embodiment of the present application provides a method and an apparatus for transmitting a signal, which can improve the efficiency of time-frequency synchronization.

In a first aspect, a method of transmitting a signal is provided, comprising:

Transmitting a first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments within the system frequency range;

Transmitting a second synchronization signal or a second portion of the synchronization signal on a second one of the plurality of frequency segments, wherein the second frequency segment is different from the first frequency segment.

The method for transmitting a signal according to an embodiment of the present application, by transmitting a first synchronization signal for a time-frequency synchronization or a first portion of a synchronization signal on a first frequency segment, transmitting a first time synchronization on another frequency segment The second synchronization signal or the second part of the synchronization signal enables the terminal device to implement time-frequency synchronization on the frequency segments of the respective operations, thereby improving the efficiency of the time-frequency synchronization.

In some possible implementations, the first synchronization signal or the first portion of the synchronization signal may be a system synchronization signal, for example, the first synchronization signal or the first portion of the synchronization signal may be a PSS and an SSS, or the first synchronization signal or The first portion of the synchronization signal can also be a system synchronization signal in a future communication system.

In some possible implementations, the plurality of frequency segments are configured with two or more parameters.

In some possible implementations, the first frequency segment adopts a default parameter configuration.

In some possible implementations, the method further includes:

Generating the first synchronization signal or a first portion of the synchronization signal;

The second synchronization signal or a second portion of the synchronization signal is generated.

In some possible implementations, the second synchronization signal transmitted on the different second frequency segments or the second portion of the synchronization signal is different or the same.

In some possible implementations, transmitting the second synchronization signal or the second portion of the synchronization signal on the second one of the plurality of frequency segments includes:

The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently over a particular symbol over the entire frequency range of the second frequency segment.

In some possible implementations, transmitting the second synchronization signal or the second portion of the synchronization signal on the second one of the plurality of frequency segments includes:

The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently over a particular symbol within a portion of the frequency range of the second frequency segment.

In some possible implementations, transmitting the second synchronization signal or the second portion of the synchronization signal on the second one of the plurality of frequency segments includes:

The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently within a plurality of symbols over the entire frequency range of the second frequency segment.

In some possible implementations, transmitting the second synchronization signal or the second portion of the synchronization signal on the second one of the plurality of frequency segments includes:

The second synchronization signal or a second portion of the synchronization signal is transmitted intermittently within a plurality of symbols within a portion of the frequency range of the second frequency segment.

In some possible implementations, the second synchronization signal or the second portion of the synchronization signal is transmitted using different subcarriers on different symbols within the plurality of symbols.

For example, a subcarrier numbered S+(i-1)L may be used on the first transmission of the second synchronization signal or the symbol of the second portion of the synchronization signal, and the second synchronization signal or the synchronization signal may be transmitted in the next transmission. Subcarriers numbered S+(i-1)L+M may be used on the symbols of the two parts.

In some possible implementations, the second synchronization signal is transmitted on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

In some possible implementations, transmitting the second synchronization signal or the second portion of the synchronization signal on the second one of the plurality of frequency segments includes:

The second synchronization signal or a second portion of the synchronization signal is transmitted intermittently within a plurality of symbols of a particular subcarrier of the second frequency segment.

In some possible implementations, the second synchronization signal is transmitted on different frequency segments or the symbol intervals of the second portion of the synchronization signal are the same symbol number interval or different symbol number intervals.

In some possible implementations, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

In a second aspect, a method of transmitting a signal is provided, comprising:

Receiving a first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments within the system frequency range;

Performing time-frequency synchronization of the downlink communication link according to the first synchronization signal or the first portion of the synchronization signal, where the second frequency segment is different from the first frequency segment;

Receiving a second synchronization signal or a second portion of the synchronization signal on the second frequency segment;

Time-frequency synchronization of the downlink communication link is performed according to the second synchronization signal or the second portion of the synchronization signal.

In the embodiment of the present application, the terminal device working on the second frequency segment performs time-frequency synchronization according to the second synchronization signal on the second frequency segment or the second portion of the synchronization signal, without re-accessing the first frequency. Segmentation, thus improving the efficiency of time-frequency synchronization.

In some possible implementations, the plurality of frequency segments are configured with two or more parameters.

In some possible implementations, the first frequency segment adopts a default parameter configuration.

In some possible implementations, receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment includes:

The second synchronization signal or a second portion of the synchronization signal is received on a particular symbol over the entire frequency range of the second frequency segment.

In some possible implementations, receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment includes:

The second synchronization signal or a second portion of the synchronization signal is received on a particular symbol within a portion of the frequency range of the second frequency segment.

In some possible implementations, receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment includes:

The second synchronization signal or a second portion of the synchronization signal is received within a plurality of symbols over the entire frequency range of the second frequency segment.

In some possible implementations, receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment includes:

The second synchronization signal or a second portion of the synchronization signal is received within a plurality of symbols within a portion of the frequency range of the second frequency segment.

In some possible implementations, receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment includes:

The second synchronization signal or a second portion of the synchronization signal is received within a plurality of symbols of a particular subcarrier of the second frequency segment.

In a third aspect, an apparatus for transmitting a signal, comprising a processor and a transceiver, is operative to perform the method of the first aspect described above or any possible implementation thereof.

In a fourth aspect, an apparatus for transmitting a signal, comprising a processor and a transceiver, is operative to perform the method of the second aspect described above or any possible implementation thereof.

In a fifth aspect, a computer storage medium is provided having stored therein program code, the program code being operative to indicate a method of performing the first or second aspects described above or any possible implementation thereof.

DRAWINGS

FIG. 1 is a schematic diagram of a communication system applied in an embodiment of the present application.

2 is a schematic diagram of multiple frequency segments of an embodiment of the present application.

FIG. 3 is a schematic flowchart of a method for transmitting a signal according to an embodiment of the present application.

4 is a schematic diagram of a transmission signal of an embodiment of the present application.

FIG. 5 is a schematic diagram of a transmission signal according to another embodiment of the present application.

FIG. 6 is a schematic diagram of a transmission signal according to still another embodiment of the present application.

FIG. 7 is a schematic diagram of a transmission signal according to still another embodiment of the present application.

FIG. 8 is a schematic diagram of a transmission signal according to still another embodiment of the present application.

9 is a schematic block diagram of an apparatus for transmitting a signal according to an embodiment of the present application.

FIG. 10 is a schematic block diagram of an apparatus for transmitting a signal according to another embodiment of the present application.

detailed description

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

The terms "component," "module," "system," and the like, as used in this specification, are used to mean a computer-related entity, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and a computing device can be a component. One or more components can reside within a process and/or execution thread, and the components can be located on one computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures stored thereon. A component may, for example, be based on signals having one or more data packets (eg, data from two components interacting with another component between the local system, the distributed system, and/or the network, such as the Internet interacting with other systems) Communicate through local and/or remote processes.

FIG. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applied. As shown in FIG. 1, network 100 can include network device 102 and terminal devices 104, 106, 108, 110, 112, and 114, wherein the network device and the terminal device are connected by wireless. It should be understood that FIG. 1 only takes a network as a network device as an example, but the embodiment of the present application is not limited thereto. For example, the network may further include more network devices; similarly, the network may also include more terminals. The device, and the network device may also include other devices.

This specification describes various embodiments in connection with a terminal device. The terminal device may also refer to a user equipment (User Equipment, UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, and a user agent. Or user device. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, or a Personal Digital Assistant ("PDA"). Handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or future public land mobile networks (PLMN) ) Terminal devices in the network, etc.

This description describes various embodiments in connection with a network device. The network device may be a device for communicating with the terminal device, and the network device may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or a base station (NodeB, NB) in the WCDMA system, or may be LTE. The evolved base station (Evolutional Node B, eNB or eNodeB) in the system may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station or an access point. , in-vehicle devices, wearable devices, and network devices in future 5G networks or network devices in future evolved PLMN networks.

In the embodiment of the present application, the carrier of the communication system includes a plurality of frequency segments. As shown in FIG. 2, multiple frequency segments may be configured with different parameters, for example, different subcarrier bandwidths may be used. This mode can be called a hybrid system parameter configuration mode or a mixed bandwidth mode. The English expression of this mode can be numerology. It should be understood that The same parameter configuration may be used for multiple frequency segments, which is not limited in this embodiment of the present application. It should also be understood that the "frequency segmentation" may also be expressed as other names, such as "subband", etc., and the specific expression is not limited in this application.

At present, different frequency segments need to share a common synchronization signal, which can be broadcasted by the network side to the coverage area by the network side on one of the frequency segments. In this hybrid system parameter configuration mode, when the terminal device works on a frequency segment without a synchronization signal broadcast, if subsequent time-frequency synchronization is required, such as time-frequency synchronization correction, it is necessary to adjust its own tuning function, and switch back. On the frequency segment with the synchronization signal broadcast, the synchronization signal is demodulated to achieve synchronization. In this way, the terminal device needs to repeatedly adjust its own tuning function, and in this process, effective data transmission cannot be performed.

The technical solution of the embodiment of the present application is to solve the problem in the above-mentioned time-frequency synchronization. The technical solution of the embodiment of the present application is described in detail below.

FIG. 3 shows a schematic flow chart of a method of transmitting a signal according to an embodiment of the present application. The network device in FIG. 3 may be the network device 102 in FIG. 1; the terminal device may be the terminal device in the terminal devices 104, 106, 108, 110, 112, and 114 in FIG. Of course, in the actual system, the number of the network device and the terminal device may not be limited to the examples in this embodiment or other embodiments, and details are not described herein again.

310. The network device transmits the first synchronization signal or the first portion of the synchronization signal on a first one of the plurality of frequency segments within the system frequency range.

In the embodiment of the present application, the frequency range of the system includes a plurality of frequency segments. For example, multiple frequency segments can be as shown in FIG. 2.

Alternatively, multiple frequency segments may be configured with two or more parameters.

For example, multiple frequency segments may use different subcarrier bandwidths, such as frequency segment 0 in Figure 2, and subcarrier bandwidths for frequency segment 1 and frequency segment 2 are 15 kHz, 30 kHz, and 60 kHz, respectively.

Alternatively, the first frequency segment may adopt a default parameter configuration. For example, frequency segment 0 in Figure 2 uses the default parameter configuration.

The network device transmits a first synchronization signal or a first portion of the synchronization signal on one of the plurality of frequency segments (denoted as the first frequency segment). The first portion of the first synchronization signal or the synchronization signal may be used for time-frequency synchronization of the terminal device when accessing the system, and the terminal device operating on the first frequency segment performs subsequent required time-frequency synchronization.

It should be understood that the signal for synchronization transmitted on the first frequency segment and the signal for synchronization transmitted on the second frequency band may be different parts of one type of signal, that is, the first part of the synchronization signal and the first part of the synchronization signal, respectively. Two parts; also two kinds of signals, that is, the first synchronization signal and the second synchronization signal. The present application does not limit the above specific description.

The first portion of the first synchronization signal or synchronization signal may be a system synchronization signal. For example, the first synchronization signal or the first part of the synchronization signal may be a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). It should be understood that the first part of the first synchronization signal or the synchronization signal may also be a system synchronization signal in a future communication system, which is not limited in this application. Taking FIG. 2 as an example, the network device can transmit the first synchronization signal or the first portion of the synchronization signal on frequency segment 0.

When accessing the system, the terminal device detects the first synchronization signal or the first portion of the synchronization signal on the first frequency segment, performs time-frequency synchronization according to the first synchronization signal or the first portion of the synchronization signal, and further accesses the system. . If the terminal device subsequently operates on the first frequency segment, the terminal device may detect the first synchronization signal or the first portion of the synchronization signal to perform subsequent required time-frequency synchronization.

320. The network device transmits a second synchronization signal or a second portion of the synchronization signal on a second frequency segment of the plurality of frequency segments, wherein the second frequency segment is different from the first frequency segment. The second synchronization signal or the second portion of the synchronization signal can be used by the terminal device operating on the second frequency segment to perform time-frequency synchronization of the downlink communication link.

In particular, in addition to transmitting the first synchronization signal or the first portion of the synchronization signal on the first frequency segment, the network device transmits the second synchronization signal or the second portion of the synchronization signal on the other frequency segments. The second synchronization signal or the second portion of the synchronization signal can be dedicated to time-frequency synchronization of terminal devices operating on other frequency segments.

Optionally, in the case of out-of-synchronization or system reconfiguration, the terminal device may re-access the first frequency segment for time-frequency synchronization. In other cases, the terminal device can implement time-frequency synchronization on the second frequency segment by using the technical solution of the embodiment of the present application.

The second synchronization signal or the second portion of the synchronization signal may be simpler than the first portion of the first synchronization signal or synchronization signal, and may also be transmitted with less time-frequency resources. In other words, if the same synchronization signal as the first frequency segment is also transmitted on other frequency segments, a large amount of time-frequency resources are occupied, and the technical solution of the embodiment of the present application is used to transmit the transmission on other frequency segments. The second synchronization signal for time-frequency synchronization or the second part of the synchronization signal can realize time-frequency synchronization of the terminal device working on other frequency segments with less time-frequency resources, thereby improving time-frequency synchronization. effectiveness.

Alternatively, the second synchronization signal or the second portion of the synchronization signal may be referred to as a tracking RS.

Optionally, the network device generates the first synchronization signal or the first portion of the synchronization signal before transmitting the signal; and generates the second synchronization signal or the second portion of the synchronization signal.

As previously mentioned, the second synchronization signal or the second portion of the synchronization signal may be simpler than the first portion of the first synchronization signal or synchronization signal, and may also be transmitted with less time-frequency resources. However, the present application does not limit the sequence and transmission resources of each signal.

Alternatively, the second synchronization signal or the second portion of the synchronization signal transmitted on the different second frequency segments may be different or the same.

Specifically, in an embodiment of the present application, the second synchronization signal or the second portion of the synchronization signal may be independently transmitted on different second frequency segments.

The second synchronization signal on the different second frequency segments or the second portion of the synchronization signal is transmitted independently, ie the sequences generated on the different second frequency segments are different, and/or the transmission modes employed are different.

In another embodiment of the present application, the second synchronization signal or the second portion of the synchronization signal is uniformly transmitted on different second frequency segments.

The second synchronization signal on the different second frequency segments or the second portion of the synchronization signal is uniformly transmitted, that is, a sequence is uniformly generated and transmitted on each of the second frequency segments.

In the embodiment of the present application, optionally, the second synchronization signal or the second part of the synchronization signal may be transmitted by Time Division Multiplexing (TDM) or Frequency Division Multiplexing (FDM). It can also be centralized (continuous segment of resources), or distributed, which is not limited in this application. Several alternative embodiments are given below.

Optionally, in an embodiment of the present application, the network device sends the second synchronization signal or the second portion of the synchronization signal at intervals on a specific symbol in the entire frequency range of the second frequency segment.

In particular, in the present embodiment, the second synchronization signal or the transmission resource of the second portion of the synchronization signal may be sparsely distributed over a particular symbol over the entire frequency range of the second frequency segment. That is, the network device can sparsely insert the second synchronization signal or the second portion of the synchronization signal over a particular symbol over the entire frequency range of the second frequency segment. For example, the network device may transmit the second synchronization signal or the synchronization signal on the second frequency segment (frequency segment 1 and frequency segment 2 in FIG. 4) using the time-frequency resource location as shown in FIG. Two parts.

Optionally, the network device sends the second synchronization signal on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

For example, in FIG. 4, the second synchronization signal or the frequency interval of the second portion of the synchronization signal is transmitted on the frequency segment 1 and the second synchronization signal or the second synchronization signal is transmitted on the frequency segment 2. The partial frequency intervals may be the same subcarrier number interval, or may be different subcarrier number intervals.

Optionally, as shown in FIG. 4, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

Optionally, in an embodiment of the present application, the network device sends the second synchronization signal or the second portion of the synchronization signal at intervals on a specific symbol within a part of the frequency range of the second frequency segment.

Specifically, in the present embodiment, the second synchronization signal or the transmission resource of the second portion of the synchronization signal may be sparsely distributed on a specific symbol within a partial frequency range of the second frequency segment. That is, the network device can sparsely insert the second synchronization signal or the second portion of the synchronization signal over a particular symbol within a portion of the frequency range of the second frequency segment. For example, the network device may transmit the second synchronization signal or the synchronization signal on the second frequency segment (frequency segment 1 and frequency segment 2 in FIG. 5) using the time-frequency resource location as shown in FIG. 5. Two parts.

Optionally, the network device sends the second synchronization signal on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

For example, in FIG. 5, the second synchronization signal or the frequency interval of the second portion of the synchronization signal is transmitted on the frequency segment 1 and the second synchronization signal or the second synchronization signal is transmitted on the frequency segment 2 The partial frequency intervals may be the same subcarrier number interval, or may be different subcarrier number intervals.

Optionally, as shown in FIG. 5, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

Optionally, in an embodiment of the present application, the network device sends the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols in the entire frequency range of the second frequency segment.

Specifically, in this embodiment, the second synchronization signal or the transmission resource of the second portion of the synchronization signal may be sparsely distributed within a plurality of symbols in the entire frequency range of the second frequency segment. That is, the network device can sparsely insert the second synchronization signal or the second portion of the synchronization signal within a plurality of symbols over the entire frequency range of the second frequency segment. For example, the network device may transmit the second synchronization signal or the synchronization signal on the second frequency segment (frequency segment 1 and frequency segment 2 in FIG. 6) using the time-frequency resource location as shown in FIG. 6. Two parts.

Optionally, the network device sends the second synchronization signal on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

For example, in FIG. 6, the second synchronization signal or the frequency interval of the second portion of the synchronization signal is transmitted on the frequency segment 1 and the second synchronization signal or the second synchronization signal is transmitted on the frequency segment 2 The partial frequency intervals may be the same subcarrier number interval, or may be different subcarrier number intervals.

Optionally, the second synchronization signal or the second portion of the synchronization signal is transmitted using different subcarriers on different symbols within the plurality of symbols.

For example, as shown in FIG. 6, a subcarrier numbered S+(i-1)L may be used on the first transmission of the second synchronization signal or a symbol of the second portion of the synchronization signal, and the second synchronization signal is transmitted in the next transmission. Or a subcarrier with the number S+(i-1)L+M may be used on the symbol of the second part of the synchronization signal, where S represents the starting subcarrier number, L represents the adjacent subcarrier number interval, and M represents the subcarrier. The number is offset, and there are M<L, S+(i-1)L≤X and S+(i-1)L+M≤X, where X is the total number of subcarriers in the corresponding frequency segment. Alternatively, the subcarrier number offsets may be the same or different for different frequency segments.

Optionally, as shown in FIG. 6, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

Optionally, in an embodiment of the present application, the network device sends the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols in a part of the frequency range of the second frequency segment.

Specifically, in this embodiment, the second synchronization signal or the transmission resource of the second portion of the synchronization signal may be sparsely distributed within a plurality of symbols within a partial frequency range of the second frequency segment. That is, the network device may sparsely insert the second synchronization signal or the second portion of the synchronization signal within a plurality of symbols within a portion of the frequency range of the second frequency segment. For example, the network device may transmit the second synchronization signal or the synchronization signal on the second frequency segment (frequency segment 1 and frequency segment 2 in FIG. 7) using the time-frequency resource location as shown in FIG. Two parts.

Optionally, the network device sends the second synchronization signal on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

For example, in FIG. 7, the second synchronization signal or the frequency interval of the second portion of the synchronization signal is transmitted on the frequency segment 1 and the second synchronization signal or the second synchronization signal is transmitted on the frequency segment 2 The partial frequency intervals may be the same subcarrier number interval, or may be different subcarrier number intervals.

Optionally, the second synchronization signal or the second portion of the synchronization signal is transmitted using different subcarriers on different symbols within the plurality of symbols.

For example, as shown in FIG. 7, a subcarrier numbered S+(i-1)L may be used on the first transmission of the second synchronization signal or the symbol of the second portion of the synchronization signal, and the second synchronization signal is transmitted in the next transmission. Or a subcarrier with the number S+(i-1)L+M may be used on the symbol of the second part of the synchronization signal, where S represents the starting subcarrier number, L represents the adjacent subcarrier number interval, and M represents the subcarrier. The number is offset, and there are M<L, S+(i-1)L≤X and S+(i-1)L+M≤X, where X is the total number of subcarriers in the corresponding frequency segment. Alternatively, the subcarrier number offsets may be the same or different for different frequency segments.

Optionally, as shown in FIG. 7, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

Optionally, in an embodiment of the present application, the network device sends the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols of a specific subcarrier of the second frequency segment.

Specifically, in this embodiment, the second synchronization signal or the transmission resource of the second part of the synchronization signal may be sparsely distributed within a plurality of symbols of a specific subcarrier of the second frequency segment. That is, the network device may sparsely insert the second synchronization signal or the second portion of the synchronization signal within a plurality of symbols of a particular subcarrier of the second frequency segment. For example, the network device may transmit the second synchronization signal or the synchronization signal on the second frequency segment (frequency segment 1 and frequency segment 2 in FIG. 8) using the time-frequency resource location as shown in FIG. Two parts.

Optionally, the network device sends the second synchronization signal on different frequency segments or the symbol intervals of the second portion of the synchronization signal are the same symbol number interval or different symbol number intervals.

For example, in FIG. 8, the second synchronization signal or the second portion of the synchronization signal is transmitted on the frequency segment 1. The symbol interval may be the same symbol number interval as the second synchronization signal transmitted on the frequency segment 2 or the second portion of the synchronization signal may be the same symbol number interval, or may be a different symbol number interval.

Optionally, as shown in FIG. 8, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

It should be understood that the location of the second synchronization signal in FIG. 4 to FIG. 8 or the transmission resource location of the second portion of the synchronization signal is merely an example, which is not limited by the embodiment of the present application. In other words, the second synchronization signal or the transmission resource location of the second portion of the synchronization signal may be in other manners as long as both the transmitting side and the receiving side are known.

330. The terminal device performs time-frequency synchronization of the downlink communication link according to the first synchronization signal or the first part of the synchronization signal, and further optionally accesses the second frequency segment of the multiple frequency segments.

When accessing the system, the terminal device first detects the first synchronization signal or the first part of the synchronization signal on the first frequency segment, and performs time-frequency synchronization according to the first synchronization signal or the first part of the synchronization signal, and then accesses The system, for example, can access the second frequency segment and operate on the second frequency segment.

340. The terminal device performs time-frequency synchronization of the downlink communication link according to the second synchronization signal or the second part of the synchronization signal.

In the embodiment of the present application, the terminal device working on the second frequency segment detects the second synchronization signal or the second portion of the synchronization signal on the second frequency segment, according to the second synchronization signal or the synchronization. The second part of the signal is time-frequency synchronized. In this way, the terminal device does not need to re-access the first frequency segment, that is, can always work on the second frequency segment, thereby improving the efficiency of time-frequency synchronization.

Therefore, the method for transmitting a signal in the embodiment of the present application transmits the first synchronization signal for the time-frequency synchronization or the first portion of the synchronization signal on the first frequency segment, and transmits the frequency synchronization on the other frequency segments. The second synchronization signal or the second part of the synchronization signal enables the terminal device to implement time-frequency synchronization on the frequency segments of the respective operations, thereby improving the efficiency of the time-frequency synchronization.

It should be understood that the specific examples in the embodiments of the present application are only intended to help those skilled in the art to better understand the embodiments of the present application.

It should be understood that, in the various embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution sequence, and the order of execution of each process should be determined by its function and internal logic, and should not be applied to the embodiment of the present application. The implementation process constitutes any limitation.

The method of transmitting a signal according to an embodiment of the present application has been described in detail above, and an apparatus for transmitting a signal according to an embodiment of the present application will be described below.

FIG. 9 is a schematic block diagram of an apparatus 900 for transmitting signals in accordance with an embodiment of the present application. The device 900 can be a network device.

It should be understood that the apparatus 900 may correspond to a network device in each method embodiment, and may have any function of the network device in the method.

As shown in FIG. 9, the apparatus 900 includes a processor 910 and a transceiver 920.

The processor 910 is configured to generate a first synchronization signal or a first portion of the synchronization signal and a second synchronization signal or a second portion of the synchronization signal;

The transceiver 920 is configured to transmit the first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments in the system frequency range; a second one of the plurality of frequency segments The second synchronization signal or a second portion of the synchronization signal is transmitted on the frequency segment, wherein the second frequency segment is different from the first frequency segment.

Optionally, the plurality of frequency segments are configured with two or more parameters.

Optionally, the first frequency segment adopts a default parameter configuration.

Optionally, the second synchronization signal transmitted on the different second frequency segments or the second portion of the synchronization signal is different or the same.

Optionally, the transceiver 920 is configured to transmit the second synchronization signal or the second portion of the synchronization signal at intervals on a specific symbol in the entire frequency range of the second frequency segment.

Optionally, the transceiver 920 is configured to intermittently transmit the second synchronization signal or the second portion of the synchronization signal on a specific symbol within a partial frequency range of the second frequency segment.

Optionally, the transceiver 920 is configured to transmit the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols in the entire frequency range of the second frequency segment.

Optionally, the transceiver 920 is configured to transmit the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols in a part of the frequency range of the second frequency segment.

Optionally, the transceiver 920 is configured to transmit the second synchronization signal or the second portion of the synchronization signal using different subcarriers on different symbols within the plurality of symbols.

Optionally, the second synchronization signal is transmitted on different frequency segments or the frequency interval of the second portion of the synchronization signal is the same subcarrier number interval or is a different subcarrier number interval.

Optionally, the transceiver 920 is configured to transmit the second synchronization signal or the second portion of the synchronization signal at intervals in a plurality of symbols of a specific subcarrier of the second frequency segment.

Optionally, the second synchronization signal is transmitted on different frequency segments or the symbol intervals of the second portion of the synchronization signal are the same symbol number interval or different symbol number intervals.

Optionally, the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain.

FIG. 10 is a schematic block diagram of an apparatus 1000 for transmitting signals in accordance with another embodiment of the present application. The device 1000 can be a terminal device.

It should be understood that the device 1000 may correspond to the terminal device in each method embodiment, and may have any function of the terminal device in the method.

As shown in FIG. 10, the apparatus 1000 includes a processor 1010 and a transceiver 1020.

The transceiver 1020 is configured to receive a first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments in the system frequency range;

The processor uses 1010 to perform time-frequency synchronization of the downlink communication link according to the first synchronization signal or the first portion of the synchronization signal, where the second frequency segment is different from the first frequency segment;

The transceiver 1020 is further configured to receive a second synchronization signal or a second portion of the synchronization signal on the second frequency segment;

The processor 1010 is further configured to perform time-frequency synchronization of the downlink communication link according to the second synchronization signal or the second portion of the synchronization signal.

Optionally, the plurality of frequency segments are configured with two or more parameters.

Optionally, the first frequency segment adopts a default parameter configuration.

Optionally, the transceiver 1020 is configured to receive the second synchronization signal or the second portion of the synchronization signal on a specific symbol within the entire frequency range of the second frequency segment.

Optionally, the transceiver 1020 is configured to connect to a specific symbol in a part of the frequency range of the second frequency segment. Receiving the second synchronization signal or the second portion of the synchronization signal.

Optionally, the transceiver 1020 is configured to receive the second synchronization signal or the second portion of the synchronization signal in a plurality of symbols in the entire frequency range of the second frequency segment.

Optionally, the transceiver 1020 is configured to receive the second synchronization signal or the second portion of the synchronization signal in a plurality of symbols within a partial frequency range of the second frequency segment.

Optionally, the transceiver 1020 is configured to receive the second synchronization signal or a second portion of the synchronization signal within a plurality of symbols of a specific subcarrier of the second frequency segment.

It should be understood that the processor 910 and/or the processor 1010 in the embodiment of the present application may be implemented by a processing unit or a chip. Alternatively, the processing unit may be composed of multiple units in the implementation process.

It should be understood that the transceiver 920 or the transceiver 1020 in the embodiment of the present application may be implemented by a transceiver unit or a chip. Alternatively, the transceiver 920 or the transceiver 1020 may be composed of a transmitter or a receiver, or may be received by a transmitting unit or a receiver. Unit composition.

Optionally, the network device or the terminal device may further include a memory, where the program may store the program code, and the processor calls the program code stored in the memory to implement a corresponding function of the transceiver node or the terminal device.

The device of the embodiment of the present invention may be a Field-Programmable Gate Array (FPGA), may be an Application Specific Integrated Circuit (ASIC), or may be a System on Chip (SoC). It can also be a Central Processor Unit (CPU), a Network Processor (NP), a Digital Signal Processor (DSP), or a Microcontroller (Micro). The Controller Unit (MCU) can also be a Programmable Logic Device (PLD) or other integrated chip.

The embodiment of the present application further includes a communication system, including the network device in the foregoing network device embodiment and the terminal device in the terminal device embodiment.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

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

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

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

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

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed in the present application. Modifications or substitutions are intended to be included within the scope of the present application. Therefore, the scope of protection of this application should be determined by the scope of protection of the claims.

Claims (31)

A method for transmitting a signal, comprising: Transmitting a first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments within the system frequency range; Transmitting a second synchronization signal or a second portion of the synchronization signal on a second one of the plurality of frequency segments, wherein the second frequency segment is different from the first frequency segment. The method of claim 1 wherein said plurality of frequency segments are configured using two or more parameters. The method of claim 2 wherein said first frequency segment employs a default parameter configuration. The method according to any one of claims 1 to 3, further comprising: Generating the first synchronization signal or a first portion of the synchronization signal; Generating the second synchronization signal or a second portion of the synchronization signal. The method according to any one of claims 1 to 4, characterized in that the second synchronization signal transmitted on different second frequency segments or the second portion of the synchronization signal is different or identical. The method according to any one of claims 1 to 5, wherein said transmitting a second synchronization signal or a second of said synchronization signal on a second one of said plurality of frequency segments Part, including: Transmitting the second synchronization signal or the second portion of the synchronization signal at a particular symbol over the entire frequency range of the second frequency segment; or The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently over a particular symbol within a portion of the frequency range of the second frequency segment. The method according to any one of claims 1 to 5, wherein said transmitting a second synchronization signal or a second of said synchronization signal on a second one of said plurality of frequency segments Part, including: Transmitting the second synchronization signal or the second portion of the synchronization signal at intervals within a plurality of symbols over the entire frequency range of the second frequency segment; or The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently within a plurality of symbols within a portion of the frequency range of the second frequency segment. The method of claim 7 wherein said second synchronization signal or said second portion of said synchronization signal is transmitted using different subcarriers on different symbols within said plurality of symbols. The method according to any one of claims 6 to 8, wherein the second synchronization signal is transmitted on different second frequency segments or the frequency interval of the second portion of the synchronization signal is the same The carrier number interval is either a different subcarrier number interval. The method according to any one of claims 1 to 5, wherein said transmitting a second synchronization signal or a second of said synchronization signal on a second one of said plurality of frequency segments Part, including: The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently within a plurality of symbols of a particular subcarrier of the second frequency segment. The method according to claim 10, wherein the second synchronization signal is transmitted on different second frequency segments or the symbol intervals of the second portion of the synchronization signal are the same symbol number interval or different. Symbol number interval. The method according to any one of claims 1 to 11, wherein the second synchronization signal or The transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain. A method for transmitting a signal, comprising: Receiving a first synchronization signal or a first portion of the synchronization signal on a first one of the plurality of frequency segments within the system frequency range; Performing time-frequency synchronization of the downlink communication link according to the first synchronization signal or the first portion of the synchronization signal; Receiving a second synchronization signal or a second portion of the synchronization signal on a second one of the plurality of frequency segments, wherein the second frequency segment is different from the first frequency segment; Time-frequency synchronization of the downlink communication link is performed according to the second synchronization signal or the second portion of the synchronization signal. The method of claim 13 wherein said plurality of frequency segments are configured using two or more parameters. The method of claim 14 wherein said first frequency segment employs a default parameter configuration. The method according to any one of claims 13 to 15, wherein the receiving the second synchronization signal or the second portion of the synchronization signal on the second frequency segment comprises: Receiving the second synchronization signal or a second portion of the synchronization signal over a particular symbol over the entire frequency range of the second frequency segment; or Receiving the second synchronization signal or a second portion of the synchronization signal on a particular symbol within a portion of the frequency range of the second frequency segment; or Receiving the second synchronization signal or a second portion of the synchronization signal within a plurality of symbols over the entire frequency range of the second frequency segment; or. Receiving the second synchronization signal or a second portion of the synchronization signal within a plurality of symbols within a portion of the frequency range of the second frequency segment; or The second synchronization signal or a second portion of the synchronization signal is received within a plurality of symbols of a particular subcarrier of the second frequency segment. An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein The processor is configured to generate a first synchronization signal or a first portion of the synchronization signal and a second synchronization signal or a second portion of the synchronization signal; The transceiver is configured to transmit the first synchronization signal or a first portion of the synchronization signal on a first one of a plurality of frequency segments within a system frequency range; in the plurality of frequency segments Transmitting the second synchronization signal or the second portion of the synchronization signal on a second frequency segment, wherein the second frequency segment is different from the first frequency segment. The apparatus of claim 14 wherein said plurality of frequency segments are configured using two or more parameters. The apparatus of claim 18 wherein said first frequency segment employs a default parameter configuration. Apparatus according to any one of claims 17 to 19, wherein the second synchronization signal or the second portion of the synchronization signal transmitted on different second frequency segments is different or identical. Apparatus according to any one of claims 17 to 20, wherein said transceiver is for Transmitting the second synchronization signal or the second portion of the synchronization signal at a particular symbol over the entire frequency range of the second frequency segment; or The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently over a particular symbol within a portion of the frequency range of the second frequency segment. The apparatus according to any one of claims 17 to 20, wherein the transceiver is configured to transmit the second interval within a plurality of symbols in an entire frequency range of the second frequency segment a synchronization signal or a second portion of the synchronization signal; or The second synchronization signal or the second portion of the synchronization signal is transmitted intermittently within a plurality of symbols within a portion of the frequency range of the second frequency segment. The apparatus according to claim 22, wherein said transceiver is configured to transmit said second synchronization signal or a second of said synchronization signal using different subcarriers on different symbols within said plurality of symbols section. The apparatus according to any one of claims 21 to 23, wherein the second synchronization signal is transmitted on a different second frequency segment or the frequency interval of the second portion of the synchronization signal is the same The carrier number interval is either a different subcarrier number interval. The apparatus according to any one of claims 17 to 20, wherein the transceiver is configured to intermittently transmit the second synchronization within a plurality of symbols of a specific subcarrier of the second frequency segment A signal or a second portion of the synchronization signal. The apparatus according to claim 25, wherein the second synchronization signal is transmitted on different second frequency segments or the symbol intervals of the second portion of the synchronization signal are the same symbol number interval or different Symbol number interval. The apparatus according to any one of claims 17 to 26, wherein the second synchronization signal or the transmission mode of the second portion of the synchronization signal is periodically repeated in the time domain. An apparatus for transmitting a signal, comprising: a processor and a transceiver; wherein The transceiver is configured to receive a first synchronization signal or a first portion of a synchronization signal on a first one of a plurality of frequency segments within a system frequency range; The processor is configured to perform time-frequency synchronization of the downlink communication link according to the first synchronization signal or the first part of the synchronization signal; The transceiver is further configured to receive a second synchronization signal or a second portion of the synchronization signal on a second one of the plurality of frequency segments, wherein the second frequency segment is The first frequency segment is different; The processor is further configured to perform time-frequency synchronization of the downlink communication link according to the second synchronization signal or the second portion of the synchronization signal. The apparatus of claim 28 wherein said plurality of frequency segments are configured using two or more parameters. The apparatus of claim 29 wherein said first frequency segment employs a default parameter configuration. Apparatus according to any one of claims 28 to 30, wherein said transceiver is operative to receive said second synchronization signal on a particular symbol over the entire frequency range of said second frequency segment or a second portion of the synchronization signal; or Receiving the second synchronization signal or location on a particular symbol within a portion of the frequency range of the second frequency segment Said the second part of the synchronization signal; or Receiving the second synchronization signal or a second portion of the synchronization signal within a plurality of symbols over the entire frequency range of the second frequency segment; or Receiving the second synchronization signal or a second portion of the synchronization signal within a plurality of symbols within a portion of the frequency range of the second frequency segment; or The second synchronization signal or a second portion of the synchronization signal is received within a plurality of symbols of a particular subcarrier of the second frequency segment.

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