CN109392079B

CN109392079B - Method and device for transmitting signals

Info

Publication number: CN109392079B
Application number: CN201710686436.4A
Authority: CN
Inventors: 刘瑾; 宋兴华; 袁璞; 向铮铮; 罗俊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-08-11
Filing date: 2017-08-11
Publication date: 2022-03-25
Anticipated expiration: 2037-08-11
Also published as: CN109392079A

Abstract

The application provides a method and a device for transmitting signals. The method comprises the following steps: generating a set of synchronization signal pulses, wherein the set of synchronization signal pulses comprises a plurality of synchronization signal blocks; and starting to transmit the synchronization signal pulse set from a target resource of the wireless frame, wherein the offset of the target resource relative to a preset resource of the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame. According to the technical scheme, the performance of the system can be improved.

Description

Method and device for transmitting signals

Technical Field

The present application relates to the field of communications, and more particularly, to a method and apparatus for transmitting a signal.

Background

Synchronization signals and broadcast signals of a New Radio Access (NR) system are carried by a plurality of Synchronization Signal blocks (SS blocks, SSBs). Each synchronization signal block can be sent out through different beams, so that beam forming (beam forming) gain is obtained, and the coverage distance of the synchronization signals and the broadcast signals is ensured to meet the design requirement. The NR system defines that a set of sync signal pulses (SS burst set) is made up of a plurality of SS blocks. For the frequency range below 3GHz, one SS burst set can be formed by 4 SS blocks at most; for the frequency range of 3 GHz-6 GHz, one SS burst set can comprise 8 SS blocks at most; for frequency ranges above 6GHz, an SS burst set may comprise 64 SS blocks at the most. An SS burst set is sent within 5 ms. The SS burst set is sent periodically.

However, how to map and transmit the SS burst set in a radio frame (radio frame) to improve the performance of the system becomes a technical problem to be solved urgently in the NR system.

Disclosure of Invention

The application provides a method and a device for transmitting signals, which can improve the performance of a system.

In a first aspect, a method for transmitting a signal is provided, including:

generating a set of synchronization signal pulses, wherein the set of synchronization signal pulses comprises a plurality of synchronization signal blocks;

and starting to transmit the synchronization signal pulse set from a target resource of the wireless frame, wherein the offset of the target resource relative to a preset resource of the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame.

In the embodiment of the invention, the position of the synchronous signal pulse set mapped in the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame, so that the synchronous signal pulse set can be sent on a plurality of continuous downlink resources as much as possible, the sending number of synchronous signal blocks is increased, the area covered by the beamforming technology is increased as much as possible, the time delay of the terminal equipment accessing the network is shortened, and the performance of the system can be improved.

In some possible implementations, the resource includes a subframe, slot, symbol, subcarrier, resource block, or subband.

In some possible implementations, before starting to transmit the set of synchronization signal pulses from a target resource of a radio frame, the method further includes:

and determining the offset according to the uplink and downlink resource allocation of the wireless frame.

In some possible implementations, the mapping positions of the synchronization signal pulse sets may also be set in combination with the structure of the synchronization signal pulse sets.

In some possible implementations, the set of synchronization signal pulses carries information of the offset or the target resource.

In some possible implementations, a physical broadcast channel in a synchronization signal block in the set of synchronization signal pulses carries information of the offset or the target resource.

In some possible implementations, the offset or information of the target resource may be carried in PBCH as information in MIB

In some possible implementations, the method further includes:

the offset or the information of the target resource is transmitted through system information.

In some possible implementations, the system information includes remaining system information RMSI or other system information OSI.

In some possible implementations, the network device may not send the offset or the information of the target resource to the terminal device. For example, the terminal device may first obtain the uplink and downlink resource allocation, and then obtain the offset corresponding to the uplink and downlink resource allocation according to the uplink and downlink resource allocation; alternatively, the terminal device may verify the plurality of offsets respectively to obtain an actual offset and the like.

In some possible implementations, the predetermined resource is a first subframe of the radio frame, or the predetermined resource is a first subframe of a second half frame of the radio frame.

In some possible implementations, if the resource mapped by a specific synchronization signal block in the synchronization signal pulse set is an uplink resource and/or a special resource, the specific synchronization signal block is not sent.

In some possible implementations, there are no uplink resources in the resources for mapping the set of synchronization signal pulses from the target resource, or there are no uplink resources and no special resources in the resources for mapping the set of synchronization signal pulses from the target resource. This allows to transmit all sync signal blocks of the set of sync signal pulses, thereby improving the coverage of the sync signal blocks.

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

the set of synchronization signal pulses is transmitted starting from a predetermined resource of a radio frame.

In the implementation of the invention, the synchronous signal pulse set is sent from the preset resource of the wireless frame, so that no additional transmission offset is needed, the transmission overhead can be reduced, and the performance of the system can be improved.

In some possible implementations, the resource includes a resource, a slot, a symbol, a subcarrier, a resource block, or a subband.

In some possible implementations, the predetermined resource is a first subframe of the radio frame; or, the predetermined resource is a first subframe of a second half frame of the radio frame.

The embodiment of the invention does not need to adjust the uplink and downlink resource allocation of the wireless frame, and can be suitable for the condition that the uplink and downlink resource allocation is fixed or periodically fixed. That is, under the condition that the uplink and downlink resource allocation of the radio frame is not changed within a certain time, the mapping of the synchronization signal pulse set may be started from the predetermined resource of the radio frame without considering the uplink and downlink resource allocation of the radio frame.

In a third aspect, a method for transmitting signals is provided, including:

receiving a synchronous signal block, wherein a synchronous signal pulse set where the synchronous signal block is located is sent from a target resource of a wireless frame, and the offset of the target resource relative to a preset resource of the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame;

acquiring a time sequence number of the synchronization signal block, and the offset or the target resource, wherein the time sequence number represents a position of the synchronization signal block in the synchronization signal pulse set;

and determining the frame timing of the wireless frame according to the time sequence number, the offset or the target resource.

In some possible implementations, the offset or information of the target resource is carried in the synchronization signal block.

In some possible implementations, the offset or information of the target resource is carried in system information.

In some possible implementations, the time sequence number may be explicitly and/or implicitly indicated by a PBCH in a synchronization signal block

In some possible implementations, in combination with the structure of the radio frame, the terminal device may further determine a half frame timing, a slot timing, and the like.

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

receiving a synchronous signal block, wherein a synchronous signal pulse set where the synchronous signal block is located is transmitted from a preset resource of a wireless frame;

acquiring a time sequence number of the synchronous signal block, wherein the time sequence number represents the position of the synchronous signal block in the synchronous signal pulse set;

and determining the frame timing of the wireless frame according to the time sequence number and the position of the predetermined resource in the wireless frame.

Since the synchronization signal pulse set where the synchronization signal block is located is transmitted from the predetermined resource of the wireless frame, the terminal device can determine the frame timing of the wireless frame by the time sequence number and the predetermined resource

In a fifth aspect, there is provided an apparatus for transmitting signals, comprising a processor and a transceiver, which may perform the method of the first aspect or any possible implementation manner thereof.

A sixth aspect provides an apparatus for transmitting signals, comprising a processor and a transceiver, which may perform the method of the second aspect or any possible implementation thereof.

In a seventh aspect, an apparatus for transmitting signals is provided, which includes a processor and a transceiver, and may perform the method of the third aspect or any possible implementation manner thereof.

In an eighth aspect, there is provided an apparatus for transmitting signals, comprising a processor and a transceiver, which may perform the method of the fourth aspect or any possible implementation manner thereof.

A ninth aspect provides a computer storage medium having program code stored therein, the program code being operable to instruct execution of the method of any one of the first to fourth aspects or any possible implementation thereof.

A tenth aspect provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first to fourth aspects above or any possible implementation thereof.

Drawings

FIG. 1 is a schematic diagram of a system in which embodiments of the present invention are implemented.

Fig. 2 is a schematic diagram of a network architecture according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of the structure of a synchronization signal block according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of the structure of the synchronization signal pulse set according to the embodiment of the present invention.

Fig. 5 is a schematic flow chart of a method of transmitting a signal in accordance with one embodiment of the present invention.

Fig. 6a and 6b are schematic diagrams of a transmission mode of a synchronization signal pulse set according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of a transmission mode of a synchronization signal pulse set according to another embodiment of the present invention.

Fig. 8 is a schematic flow chart of a method of transmitting a signal according to another embodiment of the present invention.

Fig. 9 to 12 are schematic diagrams of a transmission manner of a synchronization signal pulse set according to still another embodiment of the present invention.

Fig. 13 is a schematic block diagram of an apparatus for transmitting signals according to an embodiment of the present invention.

Fig. 14 is a schematic block diagram of an apparatus for transmitting signals according to another embodiment of the present invention.

Detailed Description

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

Fig. 1 shows a schematic diagram of a system to which embodiments of the present invention are applied. As shown in fig. 1, system 100 may include a network device 102 and

terminal devices

104, 106, 108, 110, 112, and 17, wherein the network device and the terminal devices are connected via wireless connections. It should be understood that fig. 1 only illustrates that the system includes one network device, but the embodiment of the present invention is not limited thereto, for example, the system may also include more network devices; similarly, the system may also comprise more terminal devices. It should also be understood that the system may also be referred to as a network, and the embodiments of the present invention are not limited thereto.

Various embodiments are described herein in connection with a terminal device. A terminal device may also refer to a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. An access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN) Network, etc.

By way of example, and not limitation, in embodiments of the present invention, the terminal device may also be a wearable device. Wearable equipment can also be called wearable intelligent equipment, is the general term of applying wearable technique to carry out intelligent design, develop the equipment that can dress to daily wearing, like glasses, gloves, wrist-watch, dress and shoes etc.. A wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. The generalized wearable smart device includes full functionality, large size, and can implement full or partial functionality without relying on a smart phone, such as: smart watches or smart glasses and the like, and only focus on a certain type of application functions, and need to be used in cooperation with other devices such as smart phones, such as various smart bracelets for physical sign monitoring, smart jewelry and the like.

Various embodiments are described herein in connection with a network device. The Network device may be a device for communicating with a terminal device, and the Network device may be a Base Transceiver Station (BTS) in a Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) in a Wideband Code Division Multiple Access (Wideband Code Division Multiple Access, WCDMA) System, an evolved Node B (eNB, or eNodeB) in a Long Term Evolution (LTE) System, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a relay Station, an Access point, a vehicle-mounted device, a wearable device, a Network device in a future 5G Network, a Network device in a future evolved PLMN Network, or the like.

In addition, in this embodiment of the present invention, a network device provides a service for a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (for example, a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (Metro cells), Micro cells (Micro cells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services. In addition, the cell may also be a super cell (supercell).

Fig. 2 is a schematic diagram of a network architecture, which may be a network architecture diagram of an NR in a next generation wireless communication system, for example, to which an embodiment of the present invention may be applied. In the network architecture diagram, a network device may be divided into a Centralized Unit (CU) and a plurality of Transmission Reception Points (TRPs)/Distributed Units (DUs), that is, a Bandwidth-Based Unit (BBU) of the network device is reconfigured into functional entities of the DU and CU. It should be noted that the forms and numbers of the centralized units and the TRP/DUs do not limit the embodiments of the present invention. Although the forms of the respective corresponding centralized units of the network device 1 and the network device 2 shown in fig. 2 are different, the respective functions are not affected. It is understood that the TRP/DU within the scope of the centralized unit 1 and the dashed line is a constituent element of the network device 1, the TRP/DU within the scope of the centralized unit 2 and the solid line is a constituent element of the network device 2, and the network device 1 and the network device 2 are network devices (or referred to as base stations) involved in the NR system.

The CU may process functions of a Radio Resource Control (RRC) layer, a Packet Data Convergence Protocol (PDCP) layer, and the like, and even may support a part of functions of a core network sinking to an access network, which is referred to as an edge computing network in the term, to meet higher requirements of a future communication network for emerging services, such as video, network shopping, and virtual/augmented reality, on network delay.

The DU can mainly handle physical layer functions and layer 2 functions with high real-time requirements, and considering transmission resources of a Radio Remote Unit (RRU) and the DU, part of the physical layer functions of the DU can be moved up to the RRU, and even more aggressive DUs can be merged with the RRU along with the miniaturization of the RRU.

CU can be distributed in a centralized mode, DU distribution depends on the actual network environment, a core urban area is high in telephone traffic density, small in inter-station distance, and in areas with limited machine room resources, such as universities and large-scale performance venues, DU can also be distributed in a centralized mode, telephone traffic is sparse, inter-station distance is large, and in other areas, such as suburb counties and mountain areas, DU can be distributed.

The S1-C interface illustrated in fig. 2 may be a standard interface between a network device and a core network, and specifically, the device connected to S1-C is not shown in fig. 2.

Fig. 3 shows a schematic diagram of the structure of a synchronization signal block of an embodiment of the present invention. It should be understood that fig. 3 is only an example and is not to be construed as limiting the embodiments of the present invention.

As shown in fig. 3, the synchronization signals and the Broadcast channels may together form an SS block, i.e., the NR primary synchronization signal (NR-PSS), the NR secondary synchronization signal (NR-SSs) and the NR Physical Broadcast Channel (NR-PBCH) are transmitted in one SS block. For simplicity, NR-PSS, NR-SSS and NR-PBCH in a synchronization signal block may be referred to simply as PSS, SSS and PBCH, respectively.

Multiple SS blocks may form a set of synchronization signal pulses (SS burst sets), which are transmitted periodically. That is to say, the network device sends the SS blocks in a periodic SS burst set sending manner, and each SS burst set includes a plurality of SS blocks.

Fig. 4 shows a schematic diagram of the structure of a set of synchronization signal pulses of an embodiment of the invention. It should be understood that fig. 4 is only an example and is not to be construed as limiting the embodiments of the present invention.

As shown in fig. 4, L represents the maximum number of SS blocks in an SS burst set. The mapping of the slots (slots) carrying SS blocks within the 5ms time-frequency resource is also different for different subcarrier spacing (SCS), 15kHz, 30kHz, 120kHz, 240kHz, and different L. Among them, 15kHz and 30kHz are used for a low frequency band below 6GHz, and 120kHz and 240kHz are used for a high frequency band above 6 GHz. For the low frequency band with subcarrier spacing of 15kHz and 30kHz, each slot bears 2 SS blocks at most and carries slot continuous mapping of the SS blocks; for a high-frequency band with a subcarrier interval of 120kHz, 32 slots for bearing SS blocks are divided into 8 groups, 4 slots form one group, the slots in the group are mapped continuously, and one slot is arranged between the groups; for the high frequency band with subcarrier spacing of 240 kHz; the 32 slots bearing SS blocks are divided into 4 groups, 8 slots form one group, the slots in the group are mapped continuously, and the interval between the groups is 2 slots.

As can be seen from fig. 4, the transmission of one set of synchronization signal pulses requires 1ms to 5ms for different subcarrier spacings and different L. On this basis, the embodiment of the present invention provides a technical solution for mapping and transmitting a synchronization signal pulse set in a radio frame, so as to improve the performance of the system.

It should be understood that the set of synchronization signal pulses in the embodiment of the present invention is not limited to the structure shown in fig. 4, that is, the set of synchronization signal pulses may also have other structures.

It should be understood that the names of the sync signal blocks and the sync signal pulse sets are not limited in the embodiments of the present invention, that is, they may be expressed by other names. For example, SS block may also be expressed as SS/PBCH block.

In the embodiment of the present invention, the resource may be a subframe, a slot, a symbol, a subcarrier, a resource block, or a subband, but the present invention is not limited to this. For convenience of description, the embodiments of the present invention are described with reference to subframes as examples.

Fig. 5 shows a schematic flow chart of a method of transmitting a signal according to an embodiment of the invention. The network device in fig. 5 may be the network device described previously; the terminal device may be the terminal device described above. Of course, in an actual system, the number of network devices and terminal devices may not be limited to the example of this embodiment or other embodiments, and will not be described below.

The network device generates 510 a set of synchronization signal pulses, wherein the set of synchronization signal pulses comprises a plurality of synchronization signal blocks.

The set of synchronization signal pulses may have the structure described above, for example, the structure shown in fig. 4, and the synchronization signal block may have the structure shown in fig. 3, but the embodiment of the present invention is not limited thereto.

Alternatively, the PSS and SSS in the synchronization signal block may have the same or different functions as the current PSS and SSS, respectively, and may employ the same or different sequences as the current PSS and SSS, respectively.

For example, the PSS and SSS in a synchronization signal block may take longer sequences than the current PSS and SSS, respectively. The longer sequence may be a long sequence or a sequence formed by joining identical or different sequences, which may be identical or different in length.

Alternatively, the PBCH in the synchronization signal block may have the same or different function as the present PBCH. For example, the PBCH in the synchronization signal Block may carry main system Information, such as a Master Information Block (MIB).

The network device starts to transmit the synchronization signal pulse set from a target resource of a radio frame 520, wherein an offset of the target resource relative to a predetermined resource of the radio frame corresponds to uplink and downlink resource configuration of the radio frame.

In the embodiment of the invention, the synchronous signal pulse set is mapped into the wireless frame in a dynamic mapping mode. The position of the synchronous signal pulse set in the wireless frame is associated with the uplink and downlink resource allocation of the wireless frame. Each ul/dl resource allocation corresponds to an offset (offset) of the starting sending resource (target resource) of the synchronization signal burst set relative to a predetermined resource in the radio frame. The network device transmits the set of synchronization signal pulses starting from the target resource. In this way, the position of the synchronization signal pulse set can be determined according to the uplink and downlink resource configuration, so that the synchronization signal pulse set can be transmitted on a plurality of continuous downlink resources as much as possible.

It should be understood that, in the embodiment of the present invention, the uplink and downlink resource configuration of the radio frame indicates an uplink and/or downlink situation of resources of the radio frame, but the embodiment of the present invention does not limit that the radio frame necessarily includes uplink resources and downlink resources. For example, for a certain configuration, all resources in the radio frame may be downlink resources.

The predetermined resource is a calculation reference of the offset. Optionally, the predetermined resource may be a first subframe of the radio frame, or the predetermined resource may be a first subframe of a second half frame of the radio frame. That is, the offset may be relative to the first subframe of the radio frame or relative to the first subframe of the second half of the radio frame. For example, if the radio frame includes 10 subframes, i.e., subframe 0 to subframe 9, the offset may be an offset from subframe 0 or an offset from subframe 5. It should be understood that the predetermined resource may also be other resources, that is, the offset may also be an offset with respect to other resources, as long as the offset is set in advance, and the embodiment of the present invention does not limit this.

Before sending the synchronization signal pulse set, the network device may determine the offset according to the uplink and downlink resource allocation of the radio frame.

For different uplink and downlink resource configurations, the distribution of downlink resources or consecutive downlink resources may be different. In the embodiment of the present invention, the offset is determined for each uplink and downlink resource configuration. The following description will be given by taking an example of the uplink and downlink subframe arrangement shown in table 1. It should be understood that table 1 is only an example, and the embodiment of the present invention does not limit the specific configuration of the uplink and downlink resource configuration.

TABLE 1

In table 1, "D" denotes a downlink subframe for downlink transmission, "U" denotes an uplink subframe for uplink transmission, and "S" denotes a special subframe including a downlink slot, a guard slot, and an uplink slot.

It should be understood that the present invention is not limited to the classification of resources. In other words, the classification of the future resources may change, for example, a resource based on a downlink timeslot or a resource based on an uplink timeslot may occur, and the downlink resource in the implementation of the present invention is applied as long as the resource is used for downlink transmission, and the uplink resource in the implementation of the present invention is applied as long as the resource is used for uplink transmission.

In order to map the synchronization signal pulse set to a plurality of continuous downlink resources as much as possible, the offset may be set according to different uplink and downlink resource configurations. Taking the offset relative to subframe 0 as an example, for configuration 2 in table 1, as shown in fig. 6a, the offset may be 3, i.e. the set of synchronization signal pulses may be mapped starting from subframe 3, so that the synchronization signal block may be transmitted in 4ms consecutively. For configuration 1 in table 1, as shown in fig. 6b, the offset may be 4, i.e. the set of synchronization signal pulses may be mapped starting from subframe 4, so that the synchronization signal blocks may be transmitted within 3ms of each other.

It should be understood that due to the periodicity of the radio frame, the offset with respect to subframe 0 may also be transformed into an offset with respect to subframe 5, for example, offset 3 with respect to subframe 0 may be transformed into offset-2 with respect to subframe 5, which will not be described in detail below for brevity.

It should be understood that the mapping positions of the synchronization signal pulse sets may also be set in connection with the structure of the synchronization signal pulse sets. For example, for a subcarrier interval of 30kHz and a synchronization signal burst set of a maximum of 4 synchronization signal blocks, it only needs to occupy 1 downlink subframe, and thus the synchronization signal burst set is mapped to subframe 0 and subframe 5; for the synchronization signal pulse sets in other cases, one downlink subframe is not enough, so the offset can be set for different uplink and downlink subframe configurations. For example, the offset may be set as shown in table 2.

As shown in the configuration scheme 1 of the uplink and downlink subframes in table 2, by using the mapping manner shown in table 2, the predetermined subframe number is 0, and the offset is-1, so that the synchronization signal burst set is mapped in 2 consecutive downlink subframes consisting of the subframe 9 of the previous radio frame and the subframe 0 of the current radio frame, and the predetermined subframe number is 5 and the offset is-1, so that the synchronization signal burst set is mapped in 2 consecutive downlink subframes consisting of the subframe 4 and the subframe 5.

TABLE 2

In the above example, the resource is a subframe. Alternatively, for the case where the resource is a slot, the mapping of the offset and the set of synchronization signal pulses may be granular in the slot.

As shown in fig. 7, the offset may be determined according to the configuration of the uplink and downlink timeslots of the radio frame. For example, the offset in fig. 7 is offset (3) with respect to slot 0 of the first subframe of the radio frame, i.e., the set of synchronization signal pulses may be transmitted starting from slot 3 of the first subframe.

Optionally, as an embodiment of the present invention, there is no uplink resource in the resources for mapping the synchronization signal pulse set from the target resource, or there is no uplink resource and no special resource in the resources for mapping the synchronization signal pulse set from the target resource.

Specifically, in the present embodiment, the offset value is such that there is no uplink resource, or no uplink resource and no special resource, among consecutive resources used for mapping the synchronization signal pulse set. For example, for a subcarrier spacing of 15kHz and a synchronization signal burst set of a maximum of 4 synchronization signal blocks, it only needs to occupy 2 subframes, and thus it is possible to make consecutive 2 subframes for mapping the synchronization signal burst set a downlink subframe, or one downlink subframe and one special subframe by setting the offset value.

Optionally, as an embodiment of the present invention, if the resource mapped by the specific synchronization signal block in the synchronization signal pulse set is an uplink resource and/or a special resource, the specific synchronization signal block is not sent.

Specifically, although the offset may be set for the uplink and downlink resource configuration, the mapping resource of the synchronization signal burst set may still include the uplink resource and/or the special resource, especially for the synchronization signal burst set occupying a large number of resources. In this case, if the resource mapped to a certain synchronization signal block is an uplink resource and/or a special resource, the synchronization signal block is not transmitted. For example, as shown in fig. 4, in the case where a subcarrier interval is 120kHz and one set of synchronization signal pulses includes 64 synchronization signal blocks, it takes 4 subframes to transmit one set of synchronization signal pulses. As shown in fig. 6b, when the synchronization signal burst set is mapped to 4 consecutive subframes from subframe 4 to subframe 7 during resource mapping, and the fourth subframe (i.e. subframe 7) is an uplink subframe, the synchronization signal block mapped to the uplink subframe is not transmitted.

Optionally, in an embodiment of the present invention, the set of synchronization signal pulses carries information of the offset or the target resource.

Specifically, the network device may send the information of the offset or the target resource to the terminal device in the synchronization signal burst set. Optionally, a physical broadcast channel in a synchronization signal block in the synchronization signal burst set carries information of the offset or the target resource. For example, the offset or the information of the target resource may be sent to the terminal device in PBCH as information in MIB carried in PBCH. Thus, when receiving the synchronization signal block, the terminal device can obtain the offset or determine the target resource, and further determine the frame timing of the wireless frame.

Optionally, in an embodiment of the present invention, the network device may further send the offset or the information of the target resource through system information.

Specifically, in addition to directly carrying the offset or the information of the target resource in the synchronization signal block, the network device may also send the offset or the information of the target resource in other manners. For example, the offset is transmitted through remaining system information (RMSI) or Other System Information (OSI).

It should be understood that the network device may not send the offset or the information of the target resource to the terminal device. In this case, the terminal device may acquire the offset or the target resource in other manners. For example, the terminal device stores a corresponding relationship between the offset and the uplink and downlink resource allocation, and may first obtain the uplink and downlink resource allocation in the current communication system, and then obtain the offset corresponding to the uplink and downlink resource allocation according to the uplink and downlink resource allocation; alternatively, the terminal device may verify the multiple offsets respectively to obtain actual offsets and the like, which is not limited in the embodiment of the present invention.

The terminal device determines 530 the frame timing of the radio frame.

The terminal equipment receives a synchronous signal block in a synchronous signal pulse set sent by the network equipment, acquires a time sequence number of the synchronous signal block and the offset or the target resource, wherein the time sequence number represents the position of the synchronous signal block in the synchronous signal pulse set, and determines the frame timing of the wireless frame according to the time sequence number and the offset or the target resource.

The obtaining manner of the offset may correspond to the indicating manner of the network side. For example, if the offset or the information of the target resource is carried in the synchronization signal block, the terminal device obtains the offset or the information of the target resource from the synchronization signal block; if the offset carries or the information of the target resource is carried in another system information, such as RMSI or OSI, the terminal device obtains the offset or the information of the target resource from the corresponding system information.

In addition, the embodiment of the present invention does not limit the manner of acquiring the time sequence number. For example, the time sequence number may be explicitly and/or implicitly indicated by a PBCH in the synchronization signal block, or indicated by other means, and the terminal device acquires the time sequence number accordingly.

The terminal device may determine the frame timing of the radio frame, i.e. the starting position of the radio frame, according to the time sequence number and the offset/the target resource. For example, the terminal device detects the time-frequency resource mapped by the synchronization signal block when receiving the synchronization signal block, then calculates the time-frequency resource mapped by the synchronization signal pulse set to which the synchronization signal block belongs according to the time sequence number of the synchronization signal block, and then determines the time-frequency resource of the frame for transmitting the synchronization signal pulse set according to the offset/the target resource, thereby determining the frame timing. Further, the terminal device may determine the half frame timing, the slot timing, and the like, by combining the structure of the radio frame or the mapping manner shown in table 2.

In the various embodiments described above, the mapping manner of the synchronization signal pulse set is a dynamic mapping manner. The set of synchronization signal pulses may also be mapped in a predefined manner, as described in more detail below. It should be understood that, in addition to the following description, reference may be made to the description of the foregoing embodiments, and the description is not repeated for brevity.

Fig. 8 shows a schematic flow chart of a method of transmitting a signal according to another embodiment of the invention.

The network device generates a set of synchronization signal pulses 810, wherein the set of synchronization signal pulses includes a plurality of synchronization signal blocks.

The structure of the sync signal pulse set and the sync signal block can refer to the foregoing embodiments, and will not be described herein.

The network device transmits the set of synchronization signal pulses from a predetermined resource of the radio frame 820.

In the embodiment of the invention, the set of synchronization signal pulses is mapped into the radio frame in a predefined way. That is, the set of synchronization signal pulses is transmitted from a predetermined resource of the radio frame. Thus, after detecting the synchronization signal block, the terminal device can determine the frame timing of the radio frame according to the predetermined resource.

Optionally, in an embodiment of the present invention, the predetermined resource is a first subframe of the radio frame.

For example, as shown in fig. 9 and 10, the set of synchronization signal pulses may be transmitted starting from subframe 0 (frame header) of the radio frame.

Optionally, in an embodiment of the present invention, the predetermined resource is a first subframe of a second half frame of the radio frame.

For example, as shown in fig. 11 and 12, the set of synchronization signal pulses may be transmitted starting from subframe 5 of the radio frame. For

configurations

3, 4 and 5 in table 1, the set of synchronization signal pulses may be transmitted in a consecutive plurality of downlink subframes.

Optionally, in an embodiment of the present invention, if the resource mapped by the specific synchronization signal block in the synchronization signal pulse set is an uplink resource and/or a special resource, the specific synchronization signal block is not sent.

Since the synchronization signal burst set is transmitted from a predetermined resource of the radio frame, the mapping resource of the synchronization signal burst set may include uplink resources and/or special resources, especially for the synchronization signal burst set occupying a large number of resources. In this case, if the resource mapped to a certain synchronization signal block is an uplink resource and/or a special resource, the synchronization signal block is not transmitted. For example, in fig. 9 to 12, the set of synchronization signal pulses occupies 4 subframes, wherein no synchronization signal block mapped to subframe 2 is transmitted in fig. 9, no synchronization signal block mapped to

subframes

1 and 2 is transmitted in fig. 10, and no synchronization signal block mapped to

subframes

7 and 8 is transmitted in fig. 12.

830, the terminal device determines the frame timing of the radio frame.

The terminal equipment receives a synchronous signal block in a synchronous signal pulse set sent by the network equipment, acquires a time sequence number of the synchronous signal block, and determines the frame timing of the wireless frame according to the time sequence number and the position of the preset resource in the wireless frame.

Since the synchronization signal pulse set where the synchronization signal block is located is sent from a predetermined resource of the radio frame, the terminal device can determine the frame timing of the radio frame, i.e. the starting position of the radio frame, by using the time sequence number and the position of the predetermined resource in the radio frame. For example, the terminal device detects the time-frequency resource mapped by the synchronization signal block when receiving the synchronization signal block, and then calculates the time-frequency resource mapped by the synchronization signal pulse set to which the synchronization signal block belongs according to the time sequence number of the synchronization signal block. The starting position of the time-frequency resource mapped by the synchronous signal pulse set is a preset resource, and the starting position of the synchronous signal pulse set mapped wireless frame can be determined by combining the position of the preset resource in the wireless frame. Further, in combination with the structure of the radio frame, the terminal device may also determine half frame timing, slot timing, and the like.

It should be understood that various embodiments of the present invention may be implemented individually or in combination, and the embodiments of the present invention are not limited thereto.

For example, a dynamic mapping manner may be adopted for the synchronization signal pulse set occupying a larger number of resources, and a predefined manner may be adopted for the synchronization signal pulse set occupying a smaller number of resources.

It should be understood that the specific examples in the embodiments of the present invention are provided only to help those skilled in the art better understand the embodiments of the present invention, and do not limit the scope of the embodiments of the present invention.

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

Having described the method of transmitting a signal according to an embodiment of the present invention in detail above, an apparatus of transmitting a signal according to an embodiment of the present invention will be described below.

Fig. 13 is a schematic diagram of an apparatus for transmitting signals according to an embodiment of the present invention. The apparatus may be a network device.

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

As shown in fig. 13, the apparatus includes a processor 1310 and a transceiver 1320.

Alternatively, the transceiver 1320 may be referred to as a Remote Radio Unit (RRU), a transceiver unit, a transceiver, or a transceiver circuit, etc. The transceiver 1320 may include at least one antenna and a radio frequency unit, and the transceiver 1320 may be used for transceiving of radio frequency signals and conversion of the radio frequency signals to baseband signals.

Optionally, the apparatus may include a baseband unit (BBU) including the processor 1310. The baseband unit may be used for baseband processing, such as channel coding, multiplexing, modulation, spreading, etc., and for controlling network devices. The transceiver 1320 and the baseband unit may be physically located together or may be physically located separately, i.e., distributed network devices.

In an example, the baseband unit may be formed by one or more boards, and the boards may jointly support a radio access network of a single access system, or may respectively support radio access networks of different access systems.

In one example, the baseband unit may be reconfigured as the aforementioned DU and CU functional entities.

The baseband unit includes a processor 1310. The processor 1310 may be configured to control the network device to perform the corresponding operations in the foregoing method embodiments. Optionally, the baseband unit may further include a memory to store necessary instructions and data.

In one embodiment, the processor 1310 is configured to generate a set of synchronization signal pulses, wherein the set of synchronization signal pulses includes a plurality of synchronization signal blocks;

the transceiver 1320 is configured to transmit the synchronization signal burst set from a target resource of a radio frame, where an offset of the target resource with respect to a predetermined resource of the radio frame corresponds to an uplink and downlink resource configuration of the radio frame.

Optionally, the resource includes a subframe, slot, symbol, subcarrier, resource block, or subband.

Optionally, the processor 1310 is further configured to:

Optionally, the set of synchronization signal pulses carries information of the offset or the target resource.

Optionally, a physical broadcast channel in a synchronization signal block in the synchronization signal burst set carries information of the offset or the target resource.

Optionally, the transceiver 1320 is further configured to:

Optionally, the system information comprises remaining system information RMSI or other system information OSI.

Optionally, the predetermined resource is a first subframe of the radio frame, or the predetermined resource is a first subframe of a second half frame of the radio frame.

Optionally, the transceiver 1320 is configured to not transmit a specific synchronization signal block in the synchronization signal burst set if the resource mapped to the specific synchronization signal block is an uplink resource and/or a special resource.

Optionally, there is no uplink resource in the resources for mapping the set of synchronization signal pulses from the target resource, or there is no uplink resource and no special resource in the resources for mapping the set of synchronization signal pulses from the target resource.

In another embodiment, the processor 1310 is configured to generate a set of synchronization signal pulses, wherein the set of synchronization signal pulses includes a plurality of synchronization signal blocks;

the transceiver 1320 is configured to transmit the set of synchronization signal pulses starting from a predetermined resource of a radio frame.

Optionally, the resource includes a resource, a slot, a symbol, a subcarrier, a resource block, or a subband.

Optionally, the predetermined resource is a first subframe of the radio frame; or, the predetermined resource is a first subframe of a second half frame of the radio frame.

Fig. 14 is a schematic diagram of an apparatus for transmitting signals according to another embodiment of the present invention. The apparatus may be a terminal device.

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

As shown in fig. 14, the apparatus includes a processor 1410 and a transceiver 1420.

Optionally, the transceiver 1420 may include a control circuit and an antenna, wherein the control circuit may be used for conversion of baseband signals and radio frequency signals and processing of radio frequency signals, and the antenna may be used for transceiving radio frequency signals.

Optionally, the apparatus may also comprise other main components of the terminal device, such as memory, input output means, etc.

The processor 1410 may be configured to process the communication protocol and the communication data, and control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device to perform corresponding operations in the foregoing method embodiments. The memory is used primarily for storing software programs and data. When the terminal device is powered on, the processor 1410 may read the software program in the memory, interpret and execute the instructions of the software program, and process the data of the software program.

In an embodiment, the transceiver 1420 is configured to receive a synchronization signal block, where a synchronization signal burst set in which the synchronization signal block is located is transmitted from a target resource of a radio frame, and an offset of the target resource with respect to a predetermined resource of the radio frame corresponds to an uplink and downlink resource configuration of the radio frame;

the processor 1410 is configured to obtain a time sequence number of the synchronization signal block, and the offset or the target resource, where the time sequence number indicates a position of the synchronization signal block in the synchronization signal pulse set; and determining the frame timing of the wireless frame according to the time sequence number, the offset or the target resource.

Optionally, the offset or the information of the target resource is carried in the synchronization signal block.

Optionally, the offset or the information of the target resource is carried in system information.

In another embodiment, the transceiver 1420 is configured to receive a synchronization signal block, wherein a set of synchronization signal pulses in which the synchronization signal block is located is transmitted from a predetermined resource of a radio frame;

the processor 1410 is configured to obtain a time sequence number of the synchronization signal block, where the time sequence number indicates a position of the synchronization signal block in the synchronization signal pulse set; and determining the frame timing of the wireless frame according to the time sequence number and the position of the predetermined resource in the wireless frame.

It is to be understood that the processor 1310 or the processor 1410 in the embodiments of the present invention may be implemented by a processing unit or a chip, and alternatively, the processing unit may be constituted by a plurality of units in the implementation process.

It should be understood that the transceiver 1320 or the transceiver 1420 in the embodiments of the present invention may be implemented by a transceiver unit or a chip, and alternatively, the transceiver 1320 or the transceiver 1420 may be formed by a transmitter or a receiver, or by a transmitting unit or a receiving unit.

It is to be understood that the processor 1310 and the transceiver 1320 in the embodiments of the present invention may be implemented by a chip, and the processor 1410 and the transceiver 1420 may be implemented by a chip.

Optionally, the network device or the terminal device may further include a memory, the memory may store program codes, and the processor calls the program codes stored in the memory to implement the corresponding functions of the network device or the terminal device. Alternatively, the processor and the memory may be implemented by chips.

The embodiment of the invention also provides a processing device, which comprises a processor and an interface;

the processor is configured to perform the methods in the various embodiments of the invention described above.

The processing device may be a chip, the processor may be implemented by hardware or may be implemented by software, and when implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like; when implemented in software, the processor may be a general-purpose processor implemented by reading software code stored in a memory, which may be integrated in the processor, located external to the processor, or stand-alone.

For example, the processing Device may be a Field-Programmable Gate Array (FPGA), an Application-Specific Integrated Circuit (ASIC), a System on Chip (SoC), a Central Processing Unit (CPU), a Network Processor (NP), a Digital Signal processing Circuit (DSP), a Microcontroller (MCU), a Programmable Logic Device (PLD), or other Integrated chips.

The embodiment of the invention also provides a device for transmitting signals, which comprises a processing unit and a transmitting-receiving unit. The processing unit and the transceiver unit may be implemented in software or hardware. In the case of a hardware implementation, the processing unit may be the processor 1310 in fig. 13, and the transceiving unit may be the transceiver 1320 in fig. 13; alternatively, the processing unit may be the processor 1410 in fig. 14, and the transceiving unit may be the transceiver 1420 in fig. 14.

The embodiment of the invention also provides a communication system which comprises the network equipment in the network equipment embodiment and the terminal equipment in the terminal equipment embodiment.

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

It should be understood that, in the embodiment of the present invention, the term "and/or" is only one kind of association relation describing an associated object, and means that three kinds of relations may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

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

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

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

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

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

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

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

Claims

1. A method of transmitting a signal, comprising:

and starting to transmit the synchronous signal pulse set from a target resource of a wireless frame, wherein the offset of the target resource relative to a preset resource of the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame.

2. The method of claim 1, wherein the resources comprise subframes, slots, symbols, subcarriers, resource blocks, or subbands.

3. The method of claim 1 or 2, wherein prior to the transmitting the set of synchronization signal pulses starting from a target resource of a radio frame, the method further comprises:

4. The method of claim 1 or 2, wherein the set of synchronization signal pulses carries information of the offset or the target resource.

5. The method of claim 4, wherein a physical broadcast channel in a synchronization signal block in the set of synchronization signal pulses carries information of the offset or the target resource.

6. The method according to claim 1 or 2, characterized in that the method further comprises:

and sending the offset or the information of the target resource through system information.

7. The method of claim 6, wherein the system information comprises remaining system information (RMSI) or Other System Information (OSI).

8. The method according to claim 1 or 2, wherein the predetermined resource is a first subframe of the radio frame or the predetermined resource is a first subframe of a second half frame of the radio frame.

9. The method according to claim 1 or 2, wherein if the resource mapped by a specific synchronization signal block in the synchronization signal burst set is uplink resource and/or special resource, the specific synchronization signal block is not transmitted.

10. The method according to claim 1 or 2, wherein there is no uplink resource in the resources for mapping the set of synchronization signal pulses starting from the target resource, or there are no uplink resource and no special resource in the resources for mapping the set of synchronization signal pulses starting from the target resource.

11. A method of transmitting a signal, comprising:

12. The method of claim 11, wherein the offset or information of the target resource is carried in the synchronization signal block; alternatively, the first and second electrodes may be,

the offset or the information of the target resource is carried in system information.

13. The method according to claim 11 or 12, wherein the predetermined resource is a first subframe of the radio frame or a first subframe of a second half frame of the radio frame.

14. An apparatus for transmitting a signal, comprising a processor and a transceiver; wherein the content of the first and second substances,

the processor configured to generate a set of synchronization signal pulses, wherein the set of synchronization signal pulses comprises a plurality of synchronization signal blocks;

the transceiver is configured to start transmitting the synchronization signal pulse set from a target resource of a radio frame, where an offset of the target resource with respect to a predetermined resource of the radio frame corresponds to uplink and downlink resource configuration of the radio frame.

15. The apparatus of claim 14, wherein the processor is further configured to:

16. The apparatus according to claim 14 or 15, wherein the set of synchronization signal pulses carries information of the offset or the target resource; alternatively, the first and second electrodes may be,

the transceiver is further configured to: and sending the offset or the information of the target resource through system information.

17. The apparatus of claim 14 or 15, wherein there is no uplink resource in the resources for mapping the set of synchronization signal pulses starting from the target resource, or no uplink resource and no special resource in the resources for mapping the set of synchronization signal pulses starting from the target resource.

18. An apparatus for transmitting a signal, comprising a processor and a transceiver; wherein the content of the first and second substances,

the transceiver is used for receiving a synchronous signal block, wherein a synchronous signal pulse set where the synchronous signal block is located is sent from a target resource of a wireless frame, and the offset of the target resource relative to a preset resource of the wireless frame corresponds to the uplink and downlink resource configuration of the wireless frame;

the processor is configured to obtain a time sequence number of the synchronization signal block, and the offset or the target resource, where the time sequence number indicates a position of the synchronization signal block in the synchronization signal pulse set; and determining the frame timing of the wireless frame according to the time sequence number, the offset or the target resource.

19. The apparatus of claim 18, wherein the offset or the information of the target resource is carried in the synchronization signal block; alternatively, the first and second electrodes may be,

20. The apparatus of claim 18 or 19, wherein the predetermined resource is a first subframe of the radio frame or a first subframe of a second half of the radio frame.