WO2018028554A1

WO2018028554A1 - Signal sending method, signal receiving method, base station, and terminal

Info

Publication number: WO2018028554A1
Application number: PCT/CN2017/096361
Authority: WO
Inventors: 侯雪颖; 徐晓东
Original assignee: 中国移动通信有限公司研究院; 中国移动通信集团公司
Priority date: 2016-08-08
Filing date: 2017-08-08
Publication date: 2018-02-15
Also published as: CN107708208B; CN107708208A

Abstract

Provided in the present disclosure is a signal sending method, a signal receiving method, a base station, and a terminal. The time-frequency locations of a synchronizing signal and a system message in the present disclosure are adjustable, rather than fixed.

Description

Signal transmitting method, receiving method, base station and terminal

Cross-reference to related applications

The present application claims priority to Chinese Patent Application No. 201610643165.X filed on Aug. 8, 2016, the entire content of which is hereby incorporated by reference.

Technical field

The present disclosure relates to the field of mobile communications technologies, and in particular, to a signal transmitting method, a receiving method, a base station, and a terminal.

Background technique

For the Long Term Evolution (LTE) system, because the service type is limited and the spectrum resources are concentrated, different services, scenarios, frequency bands, frame parameters/frame structures, resource allocation methods, and various system flow designs are relatively fixed.

In the 5G era, the development of mobile Internet and Internet of Things will bring more diverse business needs. At present, the services that 5G needs to meet include at least: enhanced mobile internet (eMBB), ultra-reliable and ultra-low latency communication (uRLLC, Ultra Reliable & Low Latency Communication) services, and massive IoT communication (mMTC). , Massive Machine Type Communication) business.

Different services have different requirements. For example, for eMBB services, higher transmission data rates are required. For mMTC services, low power, low data rate but large connection transmission is required. For URLLC, low latency and high reliability are required. transmission. 5G diversified business needs, configuring more frequency band resources, requires more flexible design in system carrier design and corresponding resource allocation.

For different service transmissions, the subcarrier characteristics may be different considering the characteristics of different services, including subcarrier spacing, transmission timing interval (TTI) length, and guard interval (GP) length. For example, in order to improve its coverage, the mMTC service tends to use smaller subcarrier spacing, longer symbol length, for example, 3.75 kHz; eMBB service does not require deep coverage, but has a higher transmission data rate, and is given to eMBB. When a service allocates a large transmission bandwidth, a larger subcarrier spacing can be used to reduce the FFT processing complexity, for example, 15 kHz; for a URLLC service, since it is sensitive to delay, the subcarrier spacing can be further improved to reduce the time domain symbol. Length, thereby reducing the length of the TTI, for example 30kHz or 60kHz.

For a carrier, try to make it possible to serve multiple services. Then, when the subcarrier characteristics of different services are different, it is necessary to design a multiplexing manner of different services, so that different subcarrier characteristic services can be efficiently multiplexed in the same carrier resource transmission. Specific multi-service multiplexing methods include time division multiplexing and frequency division multiplexing. For the frequency division multiplexing mode, frequency division multiplexing transmission may be allocated to different frequency domain resource blocks for services using different subcarrier characteristics on the same carrier, and different frequency resource blocks may adopt more advanced filters to reduce different Interference between frequency resource blocks. The frequency division based on different services is multiplexed and transmitted on one carrier. If fixed bandwidth resources are allocated for different services, some resources may not be fully utilized due to changes in traffic.

If the base station dynamically adjusts the frequency domain bandwidth resources allocated to different services according to the traffic variation of the services using different subcarrier characteristics, the resource utilization rate can be improved, and the traffic can be changed according to the traffic volume and the service type. Different bandwidth resources are allocated for the needs of different services.

For the dynamic change of traffic volume, dynamically allocate different bandwidth resources for different service needs, and the synchronization signal and broadcast signal transmission mode need to be optimized.

In addition, with the surge in traffic, 5G base station deployment may be more dense than LTE systems in related technologies. Specifically, more base stations may be deployed per unit area. If LTE design is adopted, synchronization signals and broadcasts will be used. The signal is placed in the same frequency domain position of the bandwidth, and the frequency domain position is not adjustable, and serious interference may occur between the synchronization signal and the broadcast information between the base stations. In order to reduce the interference of the synchronization signal and the broadcast signal of different cells, the transmission mode of the synchronization signal and the broadcast signal needs to be optimized.

Summary of the invention

A technical problem to be solved by some embodiments of the present disclosure is to provide a signal transmitting method, a receiving method, a base station, and a terminal for flexibly implementing synchronization signal and system message transmission.

To solve the above technical problem, some embodiments of the present disclosure provide a signaling method, including:

Adjusting a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

The first signal is transmitted at a second time-frequency location.

Optionally, the relative time-frequency position relationship between the synchronization signal and the synchronization system signal is a preset fixed value.

Optionally, the step of sending the first signal at the second time-frequency location includes:

Transmitting a first synchronization signal and a first system message at a first time-frequency location, and transmitting a second synchronization signal and a second system message at a second time-frequency location, wherein the first system message and the second system message The indication information indicating that the first signal is sent at two time-frequency positions and indicating that the system message is the first system message or the second system message is carried.

Optionally, the step of sending the first signal in the second time-frequency position further includes:

After a predetermined time window, stopping transmitting the first synchronization signal and the first system message at the first time-frequency position, but continuing to transmit the second synchronization signal and the second system message at the second time-frequency position, and in the The second system message carries indication information indicating that the network transmits the first signal only at one time-frequency location.

Optionally, the first system message or the second system message further carries the following information: system frame number information, used to indicate the location when there is another first signal other than the first signal to which the system message belongs. The indication information of the frequency domain position information of the other first signal in the carrier.

Optionally, after the step of adjusting the time-frequency position of the first signal from the first time-frequency position to the second time-frequency position, the method further includes:

And sending, by the physical layer downlink control information, prompt information for prompting the system to be updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical layer downlink control information is The first system message is located in the same subframe; and,

The first system message sent at the first time-frequency location further carries information of the second time-frequency domain location.

Optionally, the step of configuring a corresponding synchronization channel and a broadcast channel for the two or more subbands includes:

Each subband is allocated a variable frequency and variable bandwidth frequency domain bandwidth resource, and the frequency domain location of the synchronization channel and the broadcast channel of each subband is located in the subband and is located in a fixed absolute frequency domain within the system carrier bandwidth. position.

Optionally, when the adjustment is performed on the sub-bandwidth or the frequency domain location allocated for each sub-band, the method further includes:

For different cells, the absolute frequency domain locations of the synchronization signals may be different within the same system carrier bandwidth.

Updating the system message to carry the adjusted sub-bandwidth information or the adjusted frequency domain location information, and the physical layer downlink control information is used to prompt the currently serving terminal to read the updated system message, where the physical The layer downlink control information is located in a subframe before the subframe in which the updated system message is located, or the physical layer downlink control information is located in the same subframe as the updated system message.

Allocating and adjusting a synchronization channel and a broadcast channel in each subband according to the subband and frequency domain resource positions configured for each subband, so that the frequency domain location of the synchronization channel and the broadcast channel of each subband is located in the subband, and The absolute frequency domain position of the frequency domain position of the synchronization channel and the broadcast channel of each subband within the carrier bandwidth varies according to the adjustment of the subband bandwidth and the frequency domain resource location of the subband.

Optionally, when the frequency domain location of the synchronization channel and the broadcast channel corresponding to the subband changes, the step of transmitting the first signal at the first time frequency location and the second time frequency location includes:

Synchronizing signals and system messages are respectively transmitted in the first frequency domain position and the second frequency domain position for the subbands, wherein the first frequency domain location is the synchronization corresponding to the subbands, in a preset time window. The position before the frequency domain position of the channel and the broadcast channel changes, and the second frequency domain position is the position of the synchronization channel corresponding to the subband and the frequency domain position of the broadcast channel.

Optionally, the system message sent by the first frequency domain location further carries third indication information of the second frequency domain location, and the first frequency domain location is no longer transmitted after the time window. The synchronization signal and the fourth indication information of the system message.

Optionally, the frequency domain location information of the synchronization channel and the broadcast channel is represented by offset information between the frequency domain location of the synchronization channel and the broadcast channel and a center frequency point of the carrier or subband, or It is represented by an index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located.

Optionally, the frequency domain location information of the synchronization channel and the broadcast channel passes through the synchronization channel and When the frequency domain location of the broadcast channel is represented by offset value information between the center frequency of the carrier or the subband, the offset value information includes:

The preset minimum sub-bandwidth unit, the offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, wherein the sub-band of the sub-band is an integer multiple of the minimum sub-bandwidth unit.

Optionally, the offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located is selected from a plurality of preset offset values according to the cell-specific identifier.

Some embodiments of the present disclosure also provide a signal receiving method, including:

The terminal detects a first signal on a system carrier bandwidth, where the first signal includes a synchronization signal and a system message accompanied by the synchronization signal;

The terminal parses the indication information carried in the detected system message, and identifies that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station may be at the first The first signal is transmitted at the time-frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.

Optionally, the terminal parses the indication information carried in the detected system message, and the step of identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position ,include:

Parsing the indication information carried in the detected system message;

When the parsing obtains an indication that the network sends the first signal at two time-frequency locations simultaneously, and indicates that the system message is the first system message sent by the first time-frequency location or the second system message sent by the second time-frequency location In the information, according to the indication information obtained by the analysis, it is determined that the detected first signal is the first signal transmitted at the first time-frequency position or the first signal transmitted at the second time-frequency position.

Optionally, the terminal parses the indication information carried in the detected system message, and the step of identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position ,Also includes:

When the parsing obtains another first signal for the presence of the first signal to which the system message belongs, indicating information of frequency domain position information of the other first signal within the carrier, according to the other The frequency domain location information of the first signal in the carrier receives the another first signal.

Optionally, the foregoing method further includes:

Receiving, by the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the object The downlink control information of the layer is located in the same subframe as the first system message;

And reading information of the second time-frequency domain position adjusted by the time-frequency position carried in the first system message according to the prompt information, and according to the information of the second time-frequency domain location, at the second time-frequency location The second synchronization signal and the second system message are detected and received.

Optionally, the frequency domain location of the synchronization channel and the broadcast channel of each subband is located in the subband, and the absolute frequency domain position of the synchronization channel and the broadcast channel of each subband in the carrier bandwidth is variable. .

Optionally, the system message carries one or more of the following information: system timing information, carrier or subband bandwidth information, and frequency domain locations of the synchronization channel and the broadcast channel in the carrier or subband. Information; frequency domain location information of the synchronization channel and the broadcast channel in the carrier or subband is represented by offset value information between a frequency domain location of the synchronization channel and a broadcast channel and a center frequency point of the subband Or by an index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located.

When frequency domain position information of the synchronization channel and the broadcast channel in the subband is represented by offset value information between a frequency domain position of the synchronization channel and a broadcast channel and a center frequency point of the subband, The offset value information includes:

a preset minimum sub-bandwidth unit, an offset value of the synchronization signal and a center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, wherein the sub-band of the sub-band is an integer multiple of the minimum sub-bandwidth unit;

The method further includes: calculating a center frequency point CenterF of the subband according to the formula CenterF=F_Sync+BW_config/2-(BW_min/2-fk), wherein F_Sync represents the center frequency of the detected synchronization signal, and BW_config indicates The bandwidth value of the sub-bandwidth, BW_min represents a preset minimum sub-bandwidth unit, and fk represents an offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located.

Some embodiments of the present disclosure also provide a base station, including:

a position adjustment unit, configured to adjust a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

And a sending unit, configured to send the first signal at a second time-frequency position.

Optionally, the sending unit includes:

a first processing unit, configured to send the first synchronization signal and the first system message at the first time-frequency position, and send the second synchronization signal and the second system message at the second time-frequency position, where the first The system message and the second system message carry indication information indicating that the first signal is simultaneously transmitted at the two time-frequency positions, and that the system message is the first system message or the second system message.

Optionally, the sending unit further includes:

a second processing unit, configured to stop transmitting the first synchronization signal and the first system message at the first time-frequency position after a preset time window, but continue to send the second synchronization signal and the second at the second time-frequency position The system message carries indication information indicating that the network sends the first signal only at one time-frequency location in the second system message.

Optionally, the adjustment of the time-frequency position of the first signal includes an adjustment within one carrier, and an adjustment within two or more sub-bands of one carrier;

For more than two sub-band adjustments within one carrier, the system carrier bandwidth is divided into two or more sub-bands, each sub-band is configured with a corresponding first signal; the position adjustment unit includes:

a subband adjustment unit, configured to adjust, by the first time-frequency position in the k-th sub-band, a first time-frequency position in the k-th sub-band, where 1≤k ≤ N, N is an integer greater than or equal to 2, indicating the number of sub-bands.

Optionally, the first system message carries one or more of the following information: system frame number information, indication information indicating whether the second synchronization signal exists, and indicating that the second synchronization channel and the second broadcast channel are in the Indication information of frequency domain location information within a carrier.

The second system message carries one or more of the following information: system frame number information, indication information indicating whether the first synchronization signal exists, and frequency indicating the first synchronization channel and the first broadcast channel in the carrier Indicates the location information of the domain.

Optionally, the sending unit is further configured to send, by using the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located before the subframe where the first system message is located. a frame, or the physical layer downlink control information is located in the same subframe as the first system message; and the first system message sent at the first time-frequency location further carries the information of the second time-frequency domain location .

Optionally, the foregoing base station further includes:

a first configuration unit, configured to allocate, for each subband, a variable frequency and variable bandwidth frequency domain bandwidth resource, where a frequency domain location of the synchronization channel and the broadcast channel of each subband is located in the subband, and is located in the system carrier band A fixed absolute frequency domain position within the width.

Optionally, the foregoing base station further includes:

And an update unit, configured to: when the sub-bandwidth or the frequency domain location allocated for each sub-band is adjusted, update the system message to carry the adjusted sub-bandwidth information or the adjusted frequency domain location information;

The second sending unit is configured to: through the physical layer downlink control information, prompt the currently serving terminal to read the updated system message, where the physical layer downlink control information is located in a subframe before the subframe in which the updated system message is located, Or, the physical layer downlink control information is in the same subframe as the updated system message.

Optionally, the foregoing base station further includes:

a second configuration unit, configured to allocate and adjust a synchronization channel and a broadcast channel in each subband according to the subband bandwidth and the frequency domain resource location configured for each subband, so that the synchronization channel of each subband and the frequency domain location of the broadcast channel Located within the subband, and the absolute frequency domain position of the frequency domain location of the synchronization channel and the broadcast channel of each subband within the carrier bandwidth varies according to the adjustment of the subband bandwidth and the frequency domain resource location of the subband.

Optionally, the first processing unit is configured to separately send synchronization signals and system messages in the first frequency domain location and the second frequency domain location for the subbands in a preset time window, where The first frequency domain location is a location before the frequency domain location change of the synchronization channel and the broadcast channel corresponding to the subband, and the second frequency domain location is a frequency domain location change of the synchronization channel and the broadcast channel corresponding to the subband. s position.

Optionally, the frequency domain location information of the synchronization channel and the broadcast channel in the subband is represented by offset value information between a frequency domain location of the synchronization channel and a broadcast channel and a center frequency point of the subband. Or by an index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located.

Optionally, the frequency domain location information in the subband of the synchronization channel and the broadcast channel is represented by offset value information between a frequency domain position of the synchronization channel and a broadcast channel and a center frequency point of the subband. The offset value information includes:

The preset minimum sub-bandwidth unit, the synchronization signal and the smallest sub-bandwidth unit in which the synchronization signal is located An offset value of the center frequency, wherein the sub-bandwidth of the sub-band is an integer multiple of the minimum sub-bandwidth unit.

Some embodiments of the present disclosure also provide a terminal, including:

a detecting unit, configured to detect a first signal on a system carrier bandwidth, where the first signal includes a synchronization signal and a system message accompanied by the synchronization signal;

The parsing unit is configured to parse the indication information carried in the detected system message, and identify that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station The first signal may be transmitted at the first time-frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.

Optionally, the parsing unit is specifically configured to parse the indication information carried in the detected system message; when parsing is obtained, indicating that the network sends the first signal at two time-frequency positions, and indicating that the system message is When the first system message sent by the first time frequency position or the indication information of the second system message sent by the second time-frequency position is sent, according to the indication information obtained by the analysis, determining that the detected first signal is sent by the first time-frequency position The first signal transmitted at a signal or second time-frequency location.

Optionally, the parsing unit is further configured to: when parsing, obtain another frequency for the another first signal to be in the carrier when there is another first signal other than the first signal to which the system message belongs The indication information of the domain location information receives the another first signal according to the frequency domain location information of the another first signal in the carrier.

Optionally, the foregoing terminal further includes:

a receiving unit, configured to receive, from the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical The layer downlink control information is in the same subframe as the first system message;

The detecting unit is further configured to: read, according to the prompt information, information of a second time-frequency domain position adjusted by a time-frequency position carried in the first system message, according to the location of the second time-frequency domain Information, detecting and receiving the second synchronization signal and the second system message at the second time-frequency location.

Some embodiments of the present disclosure also provide a base station including a processor, a transceiver, and a memory;

The processor is configured to read a program in the memory and perform the following process:

Transmitting the first signal at a second time-frequency location;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.

Some embodiments of the present disclosure also provide a terminal, including a processor, a transceiver, and a memory;

Detecting a first signal on a system carrier bandwidth, the first signal comprising a synchronization signal and a system message accompanying the synchronization signal;

Parsing the indication information carried in the detected system message, and identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station can be in the first time Transmitting a first signal at a frequency position and/or a second time-frequency position, where the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.

Some embodiments of the present disclosure also provide a non-transitory computer readable storage medium storing computer readable instructions executable by a processor, the processing being performed when the computer readable instructions are executed by a processor Do the following:

The first signal is transmitted at a second time-frequency location.

Parsing the indication information carried in the detected system message, and identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station can be in the first time The first signal is transmitted at the frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.

Compared with the related art, the time-frequency position of the signal transmitting method, the receiving method, the base station, and the terminal, the synchronization signal, and the system message provided by the embodiments of the present disclosure are adjustable, not fixed, thereby The time-frequency location of the above-mentioned messages can be flexibly adjusted according to the frequency resource bandwidth allocated by different services or the interference of the network, so as to meet the requirements of different service transmissions and more dense networking in the 5G system, and improve system transmission efficiency.

DRAWINGS

FIG. 1 is a schematic flowchart diagram of a signaling method provided by some embodiments of the present disclosure;

2 is an exemplary diagram of center frequency point calculations of some embodiments of the present disclosure;

FIG. 3 is a schematic flowchart diagram of a signal receiving method according to some embodiments of the present disclosure;

FIG. 4 is a schematic structural diagram of a base station according to some embodiments of the present disclosure;

FIG. 5 is a schematic structural diagram of a terminal according to some embodiments of the present disclosure.

detailed description

The technical problems, the technical solutions, and the advantages of the present invention will be more clearly described in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to assist in a comprehensive understanding of the embodiments of the present disclosure. It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the disclosure. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It will be understood that "some embodiments" are used throughout the specification to mean that the particular features, structures, or characteristics of the embodiments are included in at least one embodiment of the present disclosure. Thus, "in some embodiments", "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the various embodiments of the present disclosure, it should be understood that the size of the serial numbers of the following processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented by the present disclosure. The implementation of the examples constitutes any limitation.

Additionally, the terms "system" and "network" are used interchangeably herein.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

In the embodiment provided by the present application, it should be understood that "B corresponding to A" means B and A phase. Association, according to A can determine B. However, it should also be understood that determining B from A does not mean that B is only determined based on A, and that B can also be determined based on A and/or other information.

In some embodiments of the present disclosure, the form of the base station is not limited, and may be a Macro Base Station, a Pico Base Station, a Node B (a name of a 3G mobile base station), an enhanced base station (ENB), and a home. An enhanced base station (FemtoeNB or Home eNode B or Home eNB or HNEB), a relay station, an access point, an RRU (Remote Radio Unit), an RRH (Remote Radio Head), and the like. The terminal can be a mobile phone (or cell phone), or other device capable of transmitting or receiving wireless signals, including user equipment (UE), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, Cordless phones, wireless local loop (WLL) stations, CPE (Customer Premise Equipment) capable of converting mobile signals into WiFi signals, mobile smart hotspots, smart home appliances, or other non-human operations can spontaneously and mobilely communicate Network communication equipment, etc.

Here, it should be noted that the broadcast signals of the mobile communication system have different definitions according to different protocol standards, and generally should include frame timing information such as a main information block (MIB) and a system information block (SIB). Herein, various broadcast signals used in various mobile communication systems will be represented by system messages. Generally, the system message may include one or more of the following information: system timing information, carrier or subband bandwidth information. And, the frequency domain position information of the synchronization channel and the broadcast channel within the carrier or subband, and the like.

In the related art LTE system, a synchronization signal and a broadcast signal are placed at a number of frequency domain resource locations in the center of the bandwidth. As the traffic volume increases, the base station deployment will become more and more dense, and there will be a large interference to the synchronization signal and the broadcast signal of the bandwidth center. In addition, for the transmission mode of dynamically adjusting different service bandwidths, if the transmission mode of LTE is to be used, an additional fixed resource needs to be allocated in the bandwidth center, and the subcarrier characteristics of the resource may be the same as or different from the specific service transmission, thereby The resource cannot be flexibly adjusted. Therefore, when the network side dynamically allocates different bandwidth resource transmission modes for different service requirements, the synchronization signal and the broadcast signal transmission mode of the mobile communication system need to be optimized.

The present disclosure provides a transmission scheme of a synchronization signal and a system message, and the time-frequency position of the synchronization signal and the system message can be flexibly adjusted. Referring to FIG. 1 , a signaling method provided by some embodiments of the present disclosure may be applied to a base station on a network side, including the following steps:

Step 11, adjusting the time-frequency position of the first signal from the first time-frequency position to the second time-frequency position, The first signal includes a synchronization signal and a system message accompanying the synchronization signal.

Here, the adjustment of the time-frequency position of the first signal may be an adjustment within one carrier, or may be an adjustment within two or more sub-bands of one carrier. For intra-band adjustments in more than two subbands within a carrier, the system carrier bandwidth is divided into more than two subbands, each subband being configured with a corresponding first signal; in this case, the kth subband is configured The first signal is adjusted by the first time-frequency position in the k-th sub-band to a second time-frequency position in the k-th sub-band, where 1≤k≤N, N is an integer greater than or equal to 2, indicating subband Quantity. That is, for each sub-band, the time-frequency position of the first signal of the sub-band is configured inside the sub-band, and the adjusted second time-frequency position is also located in the sub-band.

Step 12: Send the first signal at a second time-frequency position.

Here, in step 12, the first synchronization signal and the first system message may be transmitted at the first time-frequency position, and the second synchronization signal and the second system message may be transmitted at the second time-frequency position, where The system message and the second system message carry indication information indicating that the first signal is simultaneously transmitted at two time-frequency positions, and that the system message is the first system message or the second system message.

Some embodiments of the present disclosure may simultaneously transmit the synchronization signal and system message at the first time frequency location and the second time frequency location within a predetermined time window. After the time window, stopping transmitting the first synchronization signal and the first system message at the first time-frequency position, but continuing to transmit the second synchronization signal and the second system message at the second time-frequency position, and in the second The system message carries indication information indicating that the network transmits the first signal only at one time-frequency location.

As an implementation manner, the first system message or the second system message further carries the following information: system frame number information, when there is another first signal other than the first signal to which the system message belongs. And indication information indicating frequency domain position information of the another first signal within the carrier.

As can be seen from the above steps, some embodiments of the present disclosure can flexibly adjust the time or frequency position of the synchronization signal and the system message in the carrier. By adjusting the synchronization signal and the time-frequency position of the system message, the resource usage flexibility can be improved. It can also effectively coordinate the inter-cell interference of synchronization and system messages, and improve the cell search performance.

In some embodiments of the present disclosure, the relative time-frequency positional relationship between the synchronization signal in the first signal and the system message accompanying the synchronization signal is a preset fixed value, that is, a relatively fixed time-frequency positional relationship between them After receiving the synchronization signal, the terminal may detect and receive the system message according to the relatively fixed time-frequency position relationship. The above fixed value may be pre-defined, for example, the network side and the terminal side are all pre-configured with the above fixed value. The above fixed value may also be determined and notified by the network side. For example, the base station transmits the above fixed value in the signaling message/broadcast message to the terminal.

As an implementation manner, the base station may send a synchronization signal on the synchronization channel and a system message on the broadcast channel. For example, the first synchronization channel and the first broadcast channel in the first time-frequency position respectively transmit the first synchronization signal and the first system message, and the second synchronization channel and the second broadcast channel in the second time-frequency position respectively send the second synchronization. Signal and second system message.

After adjusting the time-frequency position of the first signal from the first time-frequency position to the second time-frequency position, in step 12, the base station may send the first signal at both the first time-frequency position and the second time-frequency position, The first synchronization signal and the first system message in the first signal of the first time-frequency position are respectively sent on the first synchronization channel and the first broadcast channel, and the first signal in the second time-frequency position is The second synchronization signal and the second system message are transmitted on the second synchronization channel and the second broadcast channel, respectively.

As an implementation manner, in the embodiment of the disclosure, the system message in the first signal may further carry the first indication information, where the first indication information is used to indicate that the network side sends the first time at two time-frequency positions. a signal, and indicating that the synchronization signal accompanying the system message is a first synchronization signal or a second synchronization signal, the first synchronization signal is a synchronization signal transmitted at a time-frequency position before adjustment, and the second synchronization signal is adjusted The sync signal sent after the time-frequency position. In this way, when receiving the system message, the terminal may determine, according to the first indication information, that the system message/synchronization signal is a signal sent by the first time-frequency position before adjustment or the second time-frequency position after adjustment.

By transmitting the first signal at two time-frequency positions at the same time, the accessed terminal can learn the location change of the synchronization signal and the system message by detecting the related system message, thereby ensuring that the transmission of the accessed terminal is not interrupted and the related measurement is guaranteed. And the function of reading information.

Some embodiments of the present disclosure may transmit a first signal at two time-frequency positions within a preset time window; after the time window, stop transmitting the first signal at the first time-frequency position, but continue The first signal is sent in the second time-frequency position, and the second system message sent in the second time-frequency position carries indication information indicating that the network side transmits the first signal only at one time-frequency position.

As an implementation manner, in some embodiments of the present disclosure, the first system message carries one or more of the following information: system frame number information, indication information indicating whether the second synchronization signal exists, and The indication information of the frequency domain position information of the second synchronization channel and the second broadcast channel in the carrier. The second system message carries one or more of the following information: system frame number information, indication information indicating whether the first synchronization signal exists, and frequency indicating the first synchronization channel and the first broadcast channel in the carrier Indicates the location information of the domain.

In addition, in the above method, after the step of adjusting the time-frequency position of the first signal from the first time-frequency position to the second time-frequency position, the method further includes: transmitting, by the physical layer, downlink control information, for prompting the system. The message that the message is updated, wherein the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical layer downlink control information is located in the same subframe as the first system message; The first system message sent at the first time-frequency location further carries information of the second time-frequency domain location.

In some embodiments of the present disclosure, the synchronization signal and the system message in the first signal may be separately transmitted through the first synchronization channel and the first broadcast channel of the first time-frequency position, and the second synchronization channel and the first time-frequency position are used. The second broadcast channel respectively transmits the synchronization signal and the system message in the first signal. When the system carrier bandwidth is divided into two or more sub-bands, each sub-band is configured with a corresponding first signal, before the foregoing step 11, some embodiments of the present disclosure may also be the two or more sub-bands. Configuring a corresponding first synchronization channel and a first broadcast channel, wherein a frequency domain location of the first synchronization channel and the first broadcast channel of each subband is located in the subband; and then, through the first synchronization channel of each subband and The first broadcast channel transmits a carrier synchronization signal and a system message for the subband.

Two ways of configuring a synchronization channel/broadcast channel that some embodiments of the present disclosure may employ are described below.

The first way:

In this manner, when the corresponding first synchronization channel and the first broadcast channel are configured for the two or more sub-bands, frequency-domain bandwidth resources with variable position and variable bandwidth may be allocated for each sub-band, each sub-band The frequency domain locations of the first synchronization channel and the first broadcast channel are located within the subband and are located at a fixed absolute frequency domain location within the system carrier bandwidth.

It can be seen that in the present manner, the absolute frequency domain positions of the first synchronization channel and the first broadcast channel are fixed positions. Additionally, some embodiments of the present disclosure are directed to different cells in which the absolute frequency domain locations of the synchronization signals of more than two sub-bands may be the same or different within the same system carrier bandwidth.

In this way, when the sub-bandwidth or the frequency domain location allocated for each sub-band is adjusted, some embodiments of the present disclosure may update the system message to carry the indication of the adjusted sub-bandwidth information or the adjusted frequency domain location information. And the physical layer downlink control information is used to prompt the currently serving terminal to read the updated system message, where the physical layer downlink control information is located in a subframe before the subframe in which the updated system message is located, or the physical layer The downlink control information is in the same subframe as the updated system message. Through the above processing, the terminal can read the system message in time, thereby obtaining the adjustment of the sub-band, and And to ensure the reliability of transmission.

The second way:

In this manner, when the corresponding first synchronization channel and the first broadcast channel are configured for the two or more sub-bands, each sub-band can be allocated and adjusted according to the sub-bandwidth and the frequency domain resource location configured for each sub-band. The synchronization channel and the broadcast channel within the sub-band, the frequency domain position of the synchronization channel and the broadcast channel of each sub-band are located in the sub-band, and the frequency domain position of the synchronization channel and the broadcast channel of each sub-band is within the absolute frequency domain within the carrier bandwidth. The location varies depending on the sub-bandwidth of the sub-band and the adjustment of the frequency domain resource location.

It can be seen that in the present manner, the absolute frequency domain positions of the first synchronization channel and the first broadcast channel are not fixed positions.

In this mode, when the frequency domain position of the first synchronization channel and the first broadcast channel corresponding to the subband changes, the first signal is sent in the first time frequency position and the second time frequency position, specifically The method includes: transmitting, in a preset time window, a carrier synchronization signal and a system message, respectively, in the first frequency domain location and the second frequency domain location for the subband, where the first frequency domain location is the subband Corresponding first synchronization channel and a position before a frequency domain position change of the first broadcast channel, where the second frequency domain position is a position of the first synchronization channel corresponding to the subband and a frequency domain position of the broadcast channel (after the change) The synchronization channel and the broadcast channel of the frequency domain location are the foregoing second synchronization channel and the second broadcast channel).

In addition, the base station may further carry the third indication information of the second frequency domain location in the system message sent by the first frequency domain location, and the first frequency domain location is no longer after the time window. Transmitting the synchronization signal and the fourth indication information of the system message to prompt the terminal to perform corresponding receiving processing.

As mentioned in the foregoing, the system message may include one or more of the following information: system timing information, carrier or subband bandwidth information, and frequency domain location information of the synchronization channel and the broadcast channel within the carrier or subband. Wait. Wherein, the manner of expressing the frequency domain location information of the synchronization channel and the broadcast channel in the carrier or subband may be between the frequency domain location of the synchronization channel and the broadcast channel and the center frequency of the carrier or subband The offset value information is represented by or represented by an index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located.

For example, the frequency domain location information of the synchronization channel and the broadcast channel in the subband is obtained by using offset information between the frequency domain position of the synchronization channel and the broadcast channel and the center frequency of the carrier or sub-width. In order to reduce the signaling indication overhead of the offset value information, a limited type of bandwidth value and a limited kind of synchronization signal offset value may be designed. An indication of the offset value information is set in a minimum unit of a limited type of bandwidth value, and a specific offset value information may include: The preset minimum sub-bandwidth unit, the offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, wherein the sub-bandwidth is an integer multiple of the minimum sub-bandwidth unit.

Here, in order to be able to adjust interference between different cells, the offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located may be from a preset multiple offset according to a cell-specific identifier (such as a physical cell identifier, etc.). In the shift value selection, for example, a finite selectable value [f1, f2, ..., fk] of several Sync signals can be designed in a minimum bandwidth, and fk represents the center frequency of the synchronization signal and the smallest sub-bandwidth unit in which the synchronization signal is located. Offset value.

The base station will transmit the offset value information including the minimum sub-bandwidth unit (BW_min), and the offset value (fk) of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, to the terminal. The terminal can calculate the center frequency of the subband CenterF according to the formula CenterF=F_Sync+BW_config/2-(BW_min/2-fk), where F_Sync represents the center frequency of the detected synchronization signal, and BW_config represents the subband. The bandwidth value, BW_min represents a preset minimum sub-bandwidth unit, and fk represents the offset value of the synchronization signal from the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located. Figure 2 further shows an example diagram of the above calculated center frequency.

It can be seen from the above that the signal sending method provided by some embodiments of the present disclosure provides a flexible transmission scheme of the synchronization signal and the system message, which can be applied to the change of the frequency resource bandwidth allocated by different services, and can satisfy the 5G. The demand for different service transmissions in the system improves the system transmission efficiency.

Some embodiments of the present disclosure will be described below from the terminal side.

Referring to FIG. 3, a signal receiving method provided by some embodiments of the present disclosure, when applied to a terminal, includes the following steps:

Step 31: The terminal detects a first signal on a system carrier bandwidth, where the first signal includes a synchronization signal and a system message accompanied by the synchronization signal.

Here, the time-frequency position of the system message accompanying the synchronization signal and the synchronization signal is adjustable.

Step 32: The terminal parses the indication information carried in the detected system message, and identifies that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station may The first signal is transmitted at the first time-frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.

Here, the base station may transmit the first synchronization signal and the first system message at the first time-frequency position, and/or transmit the second synchronization signal and the second system message at the second time-frequency position, the first time-frequency position and the second time. Frequency The location is the synchronization signal before and after the adjustment and the location where the system message is sent.

Here, the relative time-frequency positional relationship between the synchronization signal and the system message may be pre-agreed. For example, both the network side and the terminal side are pre-configured with the relative time-frequency position relationship described above. The foregoing relative time-frequency position relationship may also be determined and notified to the terminal by the network side. For example, the base station notifies the terminal of the information about the relative time-frequency position relationship in the signaling message/broadcast message.

In the foregoing step 32, the terminal may parse the indication information carried in the detected system message:

For example, when the parsing obtains a first system message for indicating that the network simultaneously transmits the first signal at two time-frequency positions, and that the system message is sent by the first time-frequency position or the second system message of the second time-frequency position. And indicating, according to the indication information obtained by the parsing, that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position.

For another example, when parsing obtains another first signal for the presence of the first signal to which the system message belongs, indicating information of frequency domain position information of the another first signal within the carrier, according to The frequency domain location information of the another first signal in the carrier receives the another first signal.

The terminal may further parse the indication information for indicating the frequency domain location information of the second synchronization channel and the second broadcast channel in the carrier from the system message or to indicate that the first synchronization channel and the first broadcast channel are in the carrier The indication information of the frequency domain location information; and then receiving the second synchronization channel and the second broadcast according to the indication information for indicating the frequency domain location information of the second synchronization channel and the second broadcast channel in the carrier And transmitting, by the channel, a signal sent by the first synchronization channel and the first broadcast channel according to the indication information used to indicate the first synchronization channel and the frequency domain location information of the first broadcast channel in the carrier.

It can be seen from the above steps that the time-frequency positions of the synchronization signal and the system message of some embodiments of the present disclosure are adjustable, not fixed, so that the frequency resource bandwidth or network interference can be allocated according to different services. Flexible adjustment of the time-frequency position of the above message to meet the demand for different service transmissions and more dense networking in the 5G system, and improve system transmission efficiency.

After adjusting the time-frequency position of the synchronization signal/system message, the network side may simultaneously send the synchronization signal/system message at both the first time-frequency position and the second time-frequency position before and after the adjustment, and The system message carries indication information indicating that the sent message belongs to the first time-frequency location or the second time-frequency location. Therefore, in the foregoing step 32, the terminal may parse the predetermined indication information carried in the system message, the predetermined The indication information includes a synchronization signal for indicating that the synchronization signal of the first time-frequency position or the second synchronization signal of the second time-frequency position is used to indicate that the network side transmits the first signal at two time-frequency positions simultaneously. The first indication information further includes second indication information for indicating that the network side sends the first signal only at one time-frequency location. The terminal may determine, according to the predetermined indication information, that the network side sends the first signal at one or two time-frequency positions, and receives the first signal sent by the network side at the one or two time-frequency positions, and When the network side sends the first signal at the two time-frequency positions, further determining that the time-frequency position where the system message is located belongs to the first time-frequency position before adjustment or the second time-frequency position after adjustment, the first The signal includes a system message accompanying the synchronization signal and the synchronization signal.

In addition, the network side may further carry the third indication information of the second time-frequency location in the system message sent by the first time-frequency location, and the first time-frequency location will not be after the time window. And transmitting the synchronization signal and the fourth indication information of the system message to prompt the terminal to perform corresponding receiving processing. Therefore, in the foregoing step 32, the terminal may determine the second time-frequency position according to the third indication information and the fourth indication information parsed from the system message, and receive the first signal at the second time-frequency position, and The time window stops stopping receiving the first signal at the first time-frequency position.

In some embodiments of the present disclosure, the network side may divide the system carrier bandwidth into two or more sub-bands, and the sub-carriers of different sub-bands have the same interval but are used for transmitting and receiving the same or different services. Since the network side may adjust the subband (for example, adjusting the frequency domain position of the subband or changing the bandwidth of the subband, etc.), the network side may update the subband or frequency domain position allocated for each subband. a system message, which carries the adjusted sub-bandwidth information or the adjusted frequency domain location information, and uses the physical layer downlink control information to prompt the currently serving terminal to read the updated first system message, where the physical The layer downlink control information is located in a subframe preceding the subframe in which the updated first system message is located, or the physical layer downlink control information is located in the same subframe as the updated first system message. Correspondingly, the terminal side may receive the prompt information for prompting the system message to be updated from the physical layer downlink control information, and read the second time after the adjustment of the time-frequency position carried in the first system message according to the prompt information. The information of the frequency domain location detects and receives the second synchronization signal and the second system message at the second time-frequency location according to the information of the second time-frequency domain location. Through the above processing, the terminal can read the system message in time, thereby obtaining the adjustment condition of the sub-band, thereby ensuring the reliability of the transmission.

As described above, the system message carries one or more of the following information: system frame number letter Information indicating whether there are other synchronization signals, and indication information indicating frequency domain location information of other synchronization channels and other broadcast channels within the carrier. As an embodiment, the frequency domain locations of the synchronization channel and the broadcast channel of each subband of some embodiments of the present disclosure are located in the subband, and the frequency domain locations of the synchronization channel and the broadcast channel of each subband are within the carrier bandwidth. The absolute frequency domain position is variable. The frequency domain location information of the synchronization channel and the broadcast channel in the subband may be represented by offset information between the frequency domain location of the synchronization channel and the broadcast channel and the center frequency of the subband, or by An index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located is represented.

For example, when the frequency domain position information of the synchronization channel and the broadcast channel in the subband is represented by the offset value information between the frequency domain position of the synchronization channel and the broadcast channel and the center frequency point of the subband The offset value information includes: a preset minimum sub-bandwidth unit, an offset value of the synchronization signal and a center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, where the sub-band of the sub-band is the most An integer multiple of the child's bandwidth unit. At this time, the terminal may calculate the center frequency of the subband CenterF according to the offset value information obtained in the system message according to the formula CenterF=F_Sync+BW_config/2-(BW_min/2-fk), where F_Sync indicates The center frequency of the detected synchronization signal, BW_config indicates the bandwidth value of the sub-bandwidth, BW_min indicates the preset minimum sub-bandwidth unit, and fk indicates the offset of the synchronization signal from the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located. value.

Referring to FIG. 4, some embodiments of the present disclosure provide a base station that implements the foregoing method, where the base station includes:

a position adjustment unit 41, configured to adjust a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

The sending unit 42 is configured to send the first signal at the second time-frequency position.

Here, optionally, the relative time-frequency positional relationship between the system messages accompanied by the synchronization signal and the synchronization signal is a preset fixed value.

Optionally, the sending unit includes:

Optionally, the sending unit further includes:

Here, the first system message or the second system message further carries the following information: system frame number information, used to indicate the other when there is another first signal other than the first signal to which the system message belongs An indication of frequency domain position information of a first signal within a carrier.

In some embodiments of the present disclosure, the adjustment of the time-frequency position of the first signal includes adjustments within one carrier and adjustments within two or more sub-bands of one carrier; for two within one carrier For more than one sub-band adjustment, the system carrier bandwidth is divided into two or more sub-bands, and each sub-band is configured with a corresponding first signal; the location adjustment unit may specifically include:

Here, the first system message carries one or more of the following information: system frame number information, indication information indicating whether the second synchronization signal exists, and indicating that the second synchronization channel and the second broadcast channel are in the carrier Instructions for the frequency domain location information.

Here, the sending unit is further configured to send, by using the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, where Or the physical layer downlink control information is located in the same subframe as the first system message; and the first system message sent in the first time-frequency position further carries the information of the second time-frequency domain location.

As an implementation manner, the foregoing base station of some embodiments of the present disclosure may further include:

a first configuration unit, configured to allocate, for each subband, a variable frequency and variable bandwidth frequency domain bandwidth resource, where a frequency domain location of the synchronization channel and the broadcast channel of each subband is located in the subband and is located in a system carrier bandwidth. A fixed absolute frequency domain position.

Update unit for updating when the subband or frequency domain location assigned to each subband is adjusted The system message carries the adjusted sub-bandwidth information or the adjusted frequency domain location information;

As another implementation manner, the foregoing base station of some embodiments of the present disclosure may further include:

Here, the first processing unit is configured to separately send synchronization signals and system messages in the first frequency domain location and the second frequency domain location for the subbands within a preset time window, where a frequency domain position is a position before the frequency domain position change of the synchronization channel and the broadcast channel corresponding to the subband, and the second frequency domain position is a position of the synchronization channel corresponding to the subband and a frequency domain position of the broadcast channel after the change .

In some embodiments of the present disclosure, the system message sent by the first frequency domain location further carries third indication information of the second frequency domain location, and the first frequency domain location is after the time window. The fourth indication of the synchronization signal and system message will no longer be transmitted.

Frequency domain location information of the synchronization channel and the broadcast channel in the subband is represented by offset value information between a frequency domain location of the synchronization channel and a broadcast channel and a center frequency point of the subband, or An index of a frequency domain resource block or an adjacent frequency domain resource block in which the synchronization channel or the broadcast channel is located is represented. And when frequency domain position information of the synchronization channel and the broadcast channel in the subband is represented by offset value information between a frequency domain position of the synchronization channel and a broadcast channel and a center frequency point of a subband, The offset value information includes: a preset minimum sub-bandwidth unit, an offset value of the synchronization signal and a center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located, where the sub-band of the sub-band is the minimum sub-bandwidth unit Integer multiple. Specifically, the offset value of the synchronization signal and the center frequency of the smallest sub-bandwidth unit in which the synchronization signal is located is selected from a plurality of preset offset values according to the cell-specific identifier.

Referring to FIG. 5, a terminal provided by some embodiments of the present disclosure includes:

The detecting unit 51 is configured to detect a first signal on a system carrier bandwidth, where the first signal includes a system message accompanying the synchronization signal and the synchronization signal;

The parsing unit 52 is configured to parse the indication information carried in the detected system message, and identify that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where The base station may transmit the first signal at the first time-frequency position and/or the second time-frequency position, where the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.

Optionally, the parsing unit is specifically configured to parse the indication information carried in the detected system message; when parsing is obtained, indicating that the network simultaneously sends the first signal at two time-frequency positions, and indicating that the system message is the first When the first system message sent by the time-frequency position or the indication information of the second system message sent by the second time-frequency position, determining, according to the indication information obtained by the analysis, that the detected first signal is the first one of the first time-frequency position transmission The first signal transmitted by the signal or the second time-frequency position.

Here, the parsing unit is further configured to: when parsing, obtain another frequency signal for indicating that the another first signal is within a carrier when there is another first signal other than the first signal to which the system message belongs The indication information of the information, according to the frequency domain location information of the another first signal in the carrier, receiving the another first signal.

Optionally, the terminal may further include: a receiving unit, configured to receive, from the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe where the first system message is located. The previous subframe, or the physical layer downlink control information is located in the same subframe as the first system message;

In some embodiments of the present disclosure, the system carrier bandwidth includes two or more sub-bands, and the sub-carriers of the different sub-bands are the same but are used for transmitting and receiving the same or different services. The terminal further includes:

a second receiving unit, configured to receive, from the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe in which the updated system message is located, or The physical layer downlink control information is located in the same subframe as the updated system message;

And a determining unit, configured to read the adjusted sub-bandwidth information or the adjusted frequency domain location information of the sub-band carried in the system message according to the prompt information, and determine the adjusted sub-band.

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

In addition, each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may be physically included 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 hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The above software functional unit is stored in a storage medium and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform part of the steps of the transceiving method of the various embodiments of the present disclosure. 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, and the program code can be stored. Medium.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to some embodiments of the present disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on the computer or other programmable device to produce a computer implemented The instructions, which are executed on a computer or other programmable device, provide steps for implementing the functions specified in one or more blocks of the flowchart or in a block or blocks of the flowchart.

The above is a preferred embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. It should also be considered as the scope of protection of the present disclosure.

Claims

A signaling method includes:

Adjusting a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

The first signal is transmitted at a second time-frequency location.
The method of claim 1 wherein

The relative time-frequency positional relationship between the synchronization signal and the system message accompanying the synchronization signal is a preset fixed value.
The method of claim 1 wherein

The step of transmitting the first signal at the second time-frequency location includes:

Transmitting a first synchronization signal and a first system message at a first time-frequency location, and transmitting a second synchronization signal and a second system message at a second time-frequency location, wherein the first system message and the second system message The indication information indicating that the first signal is sent at two time-frequency positions and indicating that the system message is the first system message or the second system message is carried.
The method of claim 3, wherein

The step of transmitting the first signal at the second time-frequency position further includes:

After a predetermined time window, stopping transmitting the first synchronization signal and the first system message at the first time-frequency position, but continuing to transmit the second synchronization signal and the second system message at the second time-frequency position, and in the The second system message carries indication information indicating that the network transmits the first signal only at one time-frequency location.
The method according to claim 3 or 4, wherein

The first system message or the second system message further carries the following information: system frame number information, used to indicate the another part when there is another first signal other than the first signal to which the system message belongs An indication of frequency domain location information of a signal within a carrier.
The method of claim 3, wherein after the step of adjusting the time-frequency position of the first signal from the first time-frequency position to the second time-frequency position, the method further comprises:

And sending, by the physical layer downlink control information, prompt information for prompting the system to be updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical layer downlink control information is The first system message is located in the same subframe; and,

The second time-frequency domain location is also carried in the first system message sent by the first time-frequency location. Information.
A signal receiving method includes:

The terminal detects a first signal on a system carrier bandwidth, where the first signal includes a synchronization signal and a system message accompanied by the synchronization signal;

The terminal parses the indication information carried in the detected system message, and identifies that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station may be at the first The first signal is transmitted at the time-frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.
The method according to claim 7, wherein the terminal parses the indication information carried in the detected system message, and identifies that the detected first signal is the first signal or the second time-frequency position transmitted by the first time-frequency position. The steps of sending the first signal include:

Parsing the indication information carried in the detected system message;

When the parsing obtains an indication that the network sends the first signal at two time-frequency locations simultaneously, and indicates that the system message is the first system message sent by the first time-frequency location or the second system message sent by the second time-frequency location In the information, according to the indication information obtained by the analysis, it is determined that the detected first signal is the first signal transmitted at the first time-frequency position or the first signal transmitted at the second time-frequency position.
The method according to claim 8, wherein the terminal parses the indication information carried in the detected system message, and identifies that the detected first signal is the first signal or the second time-frequency position transmitted by the first time-frequency position. The step of transmitting the first signal further includes:

When the parsing obtains another first signal for the presence of the first signal to which the system message belongs, indicating information of frequency domain position information of the other first signal within the carrier, according to the other The frequency domain location information of the first signal in the carrier receives the another first signal.
The method of claim 7 further comprising:

And receiving, by the physical layer downlink control information, the prompt information for prompting the system message to be updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical layer downlink control information is The first system message is located in the same subframe;

And reading information of the second time-frequency domain position adjusted by the time-frequency position carried in the first system message according to the prompt information, and according to the information of the second time-frequency domain location, at the second time-frequency location The second synchronization signal and the second system message are detected and received.
A base station comprising:

a position adjustment unit, configured to adjust a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

And a sending unit, configured to send the first signal at a second time-frequency position.
The base station according to claim 11, wherein

The relative time-frequency positional relationship between the synchronization signal and the system message accompanying the synchronization signal is a preset fixed value.
The base station according to claim 11, wherein

The sending unit includes:

a first processing unit, configured to send the first synchronization signal and the first system message at the first time-frequency position, and send the second synchronization signal and the second system message at the second time-frequency position, where the first The system message and the second system message carry indication information indicating that the first signal is simultaneously transmitted at the two time-frequency positions, and that the system message is the first system message or the second system message.
The base station according to claim 13, wherein

The sending unit further includes:

a second processing unit, configured to stop transmitting the first synchronization signal and the first system message at the first time-frequency position after a preset time window, but continue to send the second synchronization signal and the second at the second time-frequency position The system message carries indication information indicating that the network sends the first signal only at one time-frequency location in the second system message.
A base station according to claim 13 or 14, wherein

The first system message or the second system message further carries the following information: system frame number information, used to indicate the another part when there is another first signal other than the first signal to which the system message belongs An indication of frequency domain location information of a signal within a carrier.
The base station according to claim 13, wherein

The sending unit is further configured to send, by using physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or The physical layer downlink control information is located in the same subframe as the first system message; and the first system message sent at the first time-frequency location further carries the information of the second time-frequency domain location.
A terminal comprising:

a detecting unit, configured to detect a first signal on a system carrier bandwidth, where the first signal includes the same a system message accompanied by a step signal and a synchronization signal;

The parsing unit is configured to parse the indication information carried in the detected system message, and identify that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station The first signal may be transmitted at the first time-frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.
The terminal according to claim 17, wherein

The parsing unit is specifically configured to parse the indication information carried in the detected system message; when parsing is obtained to indicate that the network simultaneously transmits the first signal at two time-frequency positions, and indicates that the system message is the first time-frequency position And sending, by the first system message or the indication information of the second system message sent by the second time-frequency position, determining, according to the indication information obtained by the analysis, that the detected first signal is the first signal sent by the first time-frequency position or the first The first signal transmitted at the 2nd time frequency position.
The terminal according to claim 18, wherein

The parsing unit is further configured to, when parsing, obtain frequency domain location information indicating that the another first signal is within a carrier when another first signal other than the first signal to which the system message belongs is obtained And indicating information, according to the frequency domain location information of the another first signal in the carrier, receiving the another first signal.
The terminal of claim 17, further comprising:

a receiving unit, configured to receive, from the physical layer downlink control information, prompt information for prompting that the system message is updated, where the physical layer downlink control information is located in a subframe before the subframe where the first system message is located, or the physical The layer downlink control information is in the same subframe as the first system message;

The detecting unit is further configured to: read, according to the prompt information, information of a second time-frequency domain position adjusted by a time-frequency position carried in the first system message, according to the location of the second time-frequency domain Information, detecting and receiving the second synchronization signal and the second system message at the second time-frequency location.
A base station comprising a processor, a transceiver and a memory;

The processor is configured to read a program in the memory and perform the following process:

Adjusting a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

Transmitting the first signal at a second time-frequency location;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.
A terminal comprising a processor, a transceiver and a memory;

The processor is configured to read a program in the memory and perform the following process:

Detecting a first signal on a system carrier bandwidth, the first signal comprising a synchronization signal and a system message accompanying the synchronization signal;

Parsing the indication information carried in the detected system message, and identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station can be in the first time Transmitting a first signal at a frequency position and/or a second time-frequency position, where the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment;

The transceiver is configured to receive and transmit data;

The memory is used to store data used by the processor to perform operations.
A non-transitory computer readable storage medium storing computer readable instructions executable by a processor, the processor performing the following operations when the computer readable instructions are executed by a processor:

Adjusting a time-frequency position of the first signal from a first time-frequency position to a second time-frequency position, where the first signal includes a synchronization signal and a system message accompanying the synchronization signal;

The first signal is transmitted at a second time-frequency location.
A non-transitory computer readable storage medium storing computer readable instructions executable by a processor, the processor performing the following operations when the computer readable instructions are executed by a processor:

Detecting a first signal on a system carrier bandwidth, the first signal comprising a synchronization signal and a system message accompanying the synchronization signal;

Parsing the indication information carried in the detected system message, and identifying that the detected first signal is the first signal sent by the first time-frequency position or the first signal sent by the second time-frequency position, where the base station can be in the first time The first signal is transmitted at the frequency position and/or the second time-frequency position, and the first time-frequency position and the second time-frequency position are transmission positions of the first signal before and after the adjustment.