CN108112020B

CN108112020B - Transmission method, device and system for synchronous access signal group

Info

Publication number: CN108112020B
Application number: CN201611055853.0A
Authority: CN
Inventors: 李建军
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2016-11-25
Filing date: 2016-11-25
Publication date: 2020-05-05
Anticipated expiration: 2036-11-25
Also published as: CN108112020A; WO2018095068A1

Abstract

The embodiment of the invention provides a transmission method, equipment and a system of a synchronous access signal group, wherein the method comprises the following steps: generating a synchronization access signal group corresponding to a plurality of frequency domain resources, the synchronization access signal group comprising Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS) and Physical Broadcast Channel (PBCH) signals, the PBCH signals comprising a Master Information Block (MIB); and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using different beams. The embodiment of the invention can reduce the signal delay of the synchronous access signal group and shorten the initial access time of the user terminal by using different beams to send the synchronous access signal group on different frequency domain resources.

Description

Transmission method, device and system for synchronous access signal group

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a device, and a system for transmitting a synchronous access signal group.

Background

The millimeter wave band (6-100GHz) is currently paid much attention due to the advantages of rich spectrum resources and wide transmission bandwidth, and has become a necessary technology for the standard of future communication systems (such as 5G). However, a significant disadvantage of millimeter wave technology is that the path loss is very large and, as the frequency is higher, the path loss is larger, which results in a small coverage area for a narrow beam in the millimeter wave band.

In the existing communication system, a base station repeatedly transmits the same initial access signal by using different beams at different times, and the different beams cover different areas, thereby realizing a broadcast function.

Disclosure of Invention

The embodiment of the invention provides a transmission method, equipment and a system of a synchronous access signal group, which aim to solve the problem of long initial access time of a user terminal.

In a first aspect, an embodiment of the present invention provides a method for transmitting a synchronization access signal group, including:

generating a Synchronization access Signal group corresponding to a plurality of frequency domain resources, the Synchronization access Signal group including a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH) Signal, the PBCH Signal including a Master Information Block (MIB);

and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using different beams.

In a second aspect, an embodiment of the present invention provides a method for transmitting a synchronization access signal group, including:

searching for a PSS over a plurality of frequency domain resources;

and searching SSS and PBCH signals on frequency domain resources corresponding to the PSS after the PSS is searched, and demodulating the PBCH signals to obtain MIB.

In a third aspect, an embodiment of the present invention provides a network side device, including:

a generating module configured to generate a set of synchronization access signals corresponding to a plurality of frequency domain resources, the set of synchronization access signals including PSS, SSS, and PBCH signals, the PBCH signals including a master information block, MIB;

and the sending module is used for sending the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources respectively by using different beams.

In a fourth aspect, an embodiment of the present invention provides a user terminal, including:

a first search module to search for a PSS over a plurality of frequency domain resources;

and the second searching module is used for searching SSS and PBCH signals on the frequency domain resource corresponding to the PSS after the PSS is searched, and demodulating the PBCH signals to obtain the MIB.

In a fifth aspect, an embodiment of the present invention provides a transmission system for synchronizing an access signal group, where the transmission system includes the network side device and the user terminal.

In the embodiment of the invention, the synchronous access signal groups corresponding to the plurality of frequency domain resources are generated, and the synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources by using different beams.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a transmission system for synchronizing a set of access signals to which an embodiment of the present invention is applicable;

fig. 2 is a flowchart of a transmission method of a synchronous access signal group according to a first embodiment of the present invention;

fig. 3 is a flowchart of a transmission method of a synchronous access signal group according to a second embodiment of the present invention;

fig. 4 is a diagram illustrating a synchronous access signal group transmission according to a second embodiment of the present invention;

fig. 5 is a flowchart of another method for sending a set of synchronization access signals according to a second embodiment of the present invention;

fig. 6 is a flowchart of a transmission method of a synchronous access signal group according to a third embodiment of the present invention;

fig. 7 is a block diagram of a network side device according to a fourth embodiment of the present invention;

fig. 8 is one of the structural diagrams of a user terminal provided in a fifth embodiment of the present invention;

fig. 9 is a second block diagram of a ue according to a fifth embodiment of the present invention;

fig. 10 is a third block diagram of a user terminal according to a fifth embodiment of the present invention;

fig. 11 is a block diagram of a network side device according to a sixth embodiment of the present invention;

fig. 12 is a block diagram of a user terminal according to a seventh embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a structural diagram of a transmission system of a synchronous access signal group, which is applicable to the embodiment of the present invention, and as shown in fig. 1, the transmission system includes a user terminal 11 and a network side device 12, where the user terminal 11 may be a ue (user equipment), for example: the terminal side Device may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and it should be noted that the specific type of the user terminal 11 is not limited in the embodiments of the present invention. The ue 11 may establish communication with the network-side device 12, where the network in the figure may indicate that the ue 11 wirelessly establishes communication with the network-side device 12, and the network-side device 12 may be a Transmission Reception Point (TRP) or a base station, and the base station may be a macro station, such as an LTE eNB, a 5G NR NB, or the like. Or the network side device 12 may be an Access Point (AP).

It should be noted that, in the embodiment of the present invention, the specific type of the network-side device 12 is not limited, and the specific functions of the user terminal 11 and the network-side device 12 will be described in detail through a plurality of embodiments below.

First embodiment

Referring to fig. 2, fig. 2 is a flowchart of a method for sending a synchronization access signal group according to an embodiment of the present invention, and as shown in fig. 2, the method includes the following steps:

step 201, generating a synchronization access signal group corresponding to a plurality of frequency domain resources, where the synchronization access signal group includes PSS, SSS, and PBCH signals, and the PBCH signals include MIB.

In this embodiment of the present invention, step 201 may generate a corresponding synchronization access signal group for each frequency domain resource, and the contents of different access signal groups are different, for example: the MIB differs in different access signal groups. The synchronization access signal group can be defined as the most basic group of signals provided by the network side equipment required by the user terminal to perform network search.

The frequency domain resource may be a sub-band, for example: resource block groups, such as resource block groups in millimeter wave bands or high frequency bands; or the frequency domain resources may be subcarriers.

Step 202, using different beams, respectively sending the synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources.

In step 202, different beams are used, and the sets of synchronization access signals corresponding to the frequency domain resources are respectively sent on different frequency domain resources, where different beams are used on different frequency domain resources to send sets of synchronization access signals, and each frequency domain resource only sends the set of synchronization access signals corresponding to the frequency domain resource. Including frequency domain resources with sequence numbers 1, 2, 3, 4, and 5, step 201 generates access synchronization signal groups with sequence numbers 1, 2, 3, 4, and 5, and the network side device includes beams with sequence numbers 1, 2, 3, 4, and 5, so that step 202 may be to transmit access synchronization signal group 1 using beam 1 on carrier frequency resource 1, and transmit access synchronization signal group 2 using beam 2 on frequency domain resource 2, which is not listed one by one here.

Through the steps, the access synchronization signal group can be sent by using different beams on different frequency domain resources, and because the coverage areas or the coverage directions of the different beams are different, the coverage of the cell is enlarged by beam scanning, so that the effect of improving the coverage area of the cell when the access synchronization signal group is sent is achieved.

It should be noted that the beam used in the embodiment of the present invention may be a narrow beam in the millimeter wave band. In addition, the embodiment of the present invention may be applied to a large-scale Multiple-Input Multiple-output (MIMO) System, a Global System for mobile communication (GSM) application scenario in the millimeter wave band, and a Code Division Multiple Access (CDMA) application scenario in the millimeter wave band.

The above method may be applied to a network side device in the network structure shown in fig. 1.

In the embodiment of the invention, a synchronous access signal group corresponding to a plurality of frequency domain resources is generated, wherein the synchronous access signal group comprises a PSS signal, a SSS signal and a PBCH signal, and the PBCH signal comprises an MIB; and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using different beams. Therefore, the synchronous access signal group is sent in a plurality of frequency domain resources through different beams, compared with the prior art that a certain narrow beam is used for sending the synchronous access signal group, the embodiment of the invention can reduce the signal delay of the synchronous access signal group and shorten the initial access time of the user terminal.

Second embodiment

Referring to fig. 3, fig. 3 is a flowchart of another method for sending a synchronization access signal group according to an embodiment of the present invention, as shown in fig. 3, including the following steps:

step 301, generating a synchronization access signal group corresponding to a plurality of sub-bands, where the synchronization access signal group includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, and the PBCH signal includes a master information block MIB, where each sub-band includes a plurality of resource blocks.

In a second embodiment, the frequency domain resources are defined as sub-bands, such as: a millimeter wave band or a sub-band in a high frequency band. And the first sub-band may include n Resource Blocks (RBs), for example: 2. the number of resource blocks is 4, 6, 7, or 8, but the present embodiment is not limited thereto, and 6 RBs are preferred. In addition, in the embodiment of the present invention, the whole system frequency band may be divided into different RBs, and each RB has 12 subcarriers. In addition, in the embodiment of the present invention, a subband may also be referred to as a resource block group.

In addition, in the embodiment of the present invention, the MIB in each synchronization access signal group may correspond to a sub-band, that is, different sub-bands have different system information.

Step 302, using different beams, respectively sending the sets of synchronization access signals corresponding to the sub-bands on different sub-bands.

In step 302, different beams are used to transmit the synchronization access signals of the sub-band on different sub-bands, so as to improve the coverage of the cell.

Optionally, the sending, by using different beams, the sets of synchronization access signals corresponding to the sub-bands on the different sub-bands respectively includes:

and respectively transmitting the synchronous access signal groups corresponding to the sub-frequency bands on the different sub-frequency bands by using the beams in different directions.

In this embodiment, the network side device may transmit the synchronization access signal group by using beams in different directions on different sub-frequency bands. And in the same sub-frequency band, the beam in the same direction or the same beam is used for transmitting the synchronous access signal group. This enables beam scanning to be achieved using different sub-bands as shown in figure 4, where the black beams in figure 4 represent the beams used for each sub-band.

It should be noted that, in the first embodiment, the step of using different beams to transmit the synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources may also include: and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using beams in different directions. For a specific description, reference may be made to related descriptions in the second embodiment, which are not repeated herein and may achieve the same beneficial effects.

In addition, in the embodiment of the present invention, each sub-band transmitting access synchronization signal group may simultaneously transmit a respective synchronization access signal group. This can achieve the effect of reducing the delay. In addition, the order of transmitting the synchronization access signal group may be according to SSS, PSS and PBCH signals, for example: as shown in fig. 4. In addition, the white portion in fig. 4 is either a control channel or other data channel.

Optionally, the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group where the MIB is sent.

In this embodiment, the frequency domain position of each synchronized access signal group via each MIB may be implemented.

Optionally, the frequency domain location information includes:

the sequence number of the resource block with the lowest or the highest sequence number in the sub-frequency band;

or the sequence number of the resource block with the central sequence number in the sub-frequency band;

or, the difference value of the sequence number of the resource block with the lowest sequence number in the sub-frequency band and the reference resource block;

or, the difference value of the serial number of the resource block with the highest serial number in the sub-frequency band and the reference resource block;

or the difference value of the sequence numbers of the resource block with the central sequence number in the sub-frequency band and the reference resource block.

In this embodiment, the user terminal may determine the frequency domain position of the corresponding sub-band upon receiving the frequency domain position information.

Optionally, the reference resource block includes:

the resource block with the lowest sequence number in the system frequency band, the resource block with the highest sequence number in the system frequency band or the resource block positioned in the middle of the system frequency band.

In this embodiment, the frequency domain position of the sub-band is indicated by the sequence number of the resource block, so that the signaling overhead can be reduced.

Optionally, in this embodiment, the MIB may further include at least one of the following:

downlink bandwidth information, Physical Hybrid ARQ indicator channel (PHICH) configuration information, and system frame number information.

It should be noted that, in this embodiment, the MIB of each synchronization access signal group may include at least one of the three contents, but the MIB contents of different synchronization access signal groups are different because different synchronization access signal groups correspond to different sub-bands.

The downlink bandwidth information is used for indicating the downlink bandwidth of the resource block corresponding to the synchronous access signal group, the PHICH configuration information is used for indicating the PHICH configuration of the resource block corresponding to the synchronous access signal group, the system frame number information is used for indicating the system frame number of the resource block corresponding to the synchronous access signal group, and the frequency domain position information is used for indicating the frequency domain position of the resource block corresponding to the synchronous access signal group. It should be noted that, in the embodiment of the present invention, different resource block groups have different synchronization access signal groups, so that the system information in each synchronization access signal group is used to indicate the relevant information of the corresponding resource block. For example: the system information in each synchronization access signal group can be as shown in table 1, but the content of each system information is different, because different system information will correspond to different resource block groups:

TABLE 1

Information field (Information field)	Number of bits (Number of bits)
		Downlink Bandwidth information (dl-Bandwidth)	3 bits (bits)
PHICH configuration (phic-Config)	3bits
		System Frame Number	8bits
Initial accss RB Position	4～6bits

Optionally, step 302 includes:

and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using different beams according to different transmission time.

In this embodiment, the synchronous access signals of each sub-band can be transmitted at different time on different sub-bands, so as to avoid the problem of high Peak to Average Power Ratio (PAPR) caused by repeated transmission of the synchronous access signals in the same OFDM symbol. In addition, the different transmission times may be different starting times for transmitting the synchronization access signal group in different sub-bands, for example: as shown in fig. 5, each resource block group transmits the synchronization access signal group in the order of SSS, PSS, and PBCH signals, but SSS transmission times are all different.

Optionally, in this embodiment, the MIB includes time information, and the time information corresponds to a transmission time of a synchronization access signal group where the MIB is transmitted.

The transmission time of each synchronization access signal group can be determined by the time information included in the MIB of each synchronization access signal group, so that the user terminal can achieve accurate time synchronization based on the time information.

Optionally, the time information includes:

the sequence number of the OFDM symbol where the PSS is located in the synchronous access signal group in the subframe;

alternatively, the first and second electrodes may be,

the sequence number of an OFDM symbol where the SSS is located in the synchronous access signal group in a subframe;

alternatively, the first and second electrodes may be,

and the sequence number of the first OFDM symbol of the PBCH signal contained in the synchronization access signal group in the subframe.

Similarly, in this embodiment, the MIB of each synchronization access signal group includes the above time information, but the time information of different synchronization access signal groups is different, for example: the frame numbers of the OFDM symbols of the PSS are different, the frame numbers of the OFDM symbols of the SSS are different, and the frame number of the first OFDM symbol of the PBCH signal is also different.

It should be noted that, the sequence number of the OFDM symbol where the PSS is located in the subframe may be the sequence number of the OFDM symbol where the PSS is located in the subframe where the PSS is located; the sequence number of the OFDM symbol where the SSS is located in the subframe may be a sequence number of the OFDM symbol where the SSS is located in the subframe to which the SSS belongs; the sequence number of the first OFDM symbol of the PBCH signal of the synchronization access signal group in the subframe may be the sequence number of the first OFDM symbol of the PBCH signal of the synchronization access signal group in the subframe to which the PBCH signal belongs.

In this embodiment, accurate time synchronization of the terminal can be achieved by the time information. For example: the user terminal can firstly determine the bandwidth of the whole frequency band according to the downlink bandwidth information, and then determine the position of the synchronous access signal group in the whole frequency band by using the frequency domain position information, so as to know the specific information of the whole frequency band. In the aspect of time synchronization, the user terminal firstly realizes frame synchronization according to the system frame number information, and then can determine the sequence number of the OFDM symbol of the synchronous access signal group number in the subframe by utilizing the sending time information of the synchronous access signal group, thereby realizing accurate time synchronization.

In addition, in this embodiment, the MIB may further include at least one of the following:

downlink bandwidth information, physical hybrid retransmission indication channel configuration information, system frame number information and frequency domain position information.

For the description of the downlink bandwidth information, the physical hybrid retransmission indicator channel configuration information, the system frame number information, and the frequency domain location information, reference may be made to the above embodiment, which is not described herein again. For example: in this embodiment, the system information may be as shown in table 2:

TABLE 2

Information feild	Number of bits
		dl-Bandwidth	3bits
phich-Config	3bits
		System Frame Number	8bits
Initial accss RB group Position	4～6bits
		Time information (Initial accs OFDM symbol index)	4bits

In the embodiment of the invention, a synchronous access signal group corresponding to a plurality of sub-bands is generated, wherein the synchronous access signal group comprises PSS, SSS and PBCH signals, the PBCH signals comprise MIB, and each sub-band comprises a plurality of resource blocks; and respectively transmitting the synchronous access signal groups corresponding to the sub-frequency bands on the different sub-frequency bands by using different beams. Through a plurality of sub-frequency bands, different beams are used for sending the synchronous access signal group on different sub-frequency bands, so that the signal delay of the synchronous access signal group can be reduced, and the initial access time of the user terminal is shortened.

Furthermore, different beams are used, and the synchronous access signal groups corresponding to the frequency domain resources are respectively sent on different frequency domain resources according to different sending time, so that the problem of high PAPR caused by repeated sending of the same information in the same OFDM symbol can be avoided.

In addition, the user terminal can acquire the specific information of the whole frequency band by carrying the frequency domain position information in the MIB; the MIB carries the frequency domain position information, so that the user terminal can accurately realize time synchronization.

Third embodiment

Referring to fig. 6, fig. 6 is a flowchart of another transmission method for a synchronization access signal group according to an embodiment of the present invention, and as shown in fig. 6, the method includes the following steps:

step 601, searching PSS on a plurality of frequency domain resources.

In step 601, the user terminal searches for the PSS in multiple frequency domain resources during initial access, and once the PSS is successfully searched, the beam on the successfully searched frequency domain resource is directed to itself.

For the description of the frequency domain resource and the PSS, reference may be made to the relevant description of the first embodiment and the second embodiment, which is not described herein again, and the PSS may be the PSS included in the synchronization access signal group sent by the network side device in the first embodiment and the second embodiment.

Step 602, after the PSS is searched, SSS and PBCH signals are searched on the frequency domain resource corresponding to the PSS, and the PBCH signals are demodulated to obtain MIB.

After searching for the PSS, the ue may determine corresponding frequency domain resources to search for SSS and PBCH signals belonging to the same synchronization access signal group, and further obtain the MIB included in the PBCH signal. After acquiring the MIB, the user terminal may perform some corresponding operations, for example: determining the frequency domain position of the frequency domain resource corresponding to the received synchronization access signal group, or performing frame synchronization, or time synchronization, etc.

Optionally, the frequency domain resource is a sub-band, and each sub-band includes a plurality of resource blocks.

For the related description of the sub-bands, reference may be made to the first embodiment and the second embodiment, which are not described herein again, and the same beneficial effects may be achieved.

Optionally, the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group where the MIB is sent;

after the demodulating the PBCH signal to obtain the MIB, the method further includes:

and acquiring frequency domain position information from the MIB, and determining a sub-frequency band of a synchronous access signal group where the MIB is sent according to the frequency domain position information.

In this embodiment, the user terminal may determine the frequency domain position of the corresponding synchronization access signal group upon receiving the frequency domain position information. Further, if the MIB further includes system frame number information, the ue may perform frame synchronization according to the system frame number information, thereby facilitating the ue to access the network.

For the description of the frequency domain location information, reference may be made to corresponding description in the second embodiment, which is not described herein again, and the same beneficial effects may be achieved.

Optionally, the frequency domain location information includes:

Optionally, the reference resource block includes:

For the description of the reference resource block, reference may be made to corresponding description in the second embodiment, which is not described herein again, and the same beneficial effects may be achieved.

Optionally, the MIB includes time information, where the time information corresponds to a sending time of a set of synchronous access signals where the MIB is sent;

and acquiring time information from the MIB, and carrying out frame synchronization according to the time information.

In this embodiment, the network side device may use different beams to transmit the synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources according to different transmission times. In addition, for the description of the time information, reference may be made to the corresponding description of the second embodiment, which is not described herein again, and the same advantageous effects may be achieved.

In the embodiment, after the user terminal receives the time information, the time synchronization can be performed according to the sending time information of the synchronization access signal group, so as to achieve the effect of accurate time synchronization, and further facilitate the user terminal to access the network.

Optionally, the time information includes:

alternatively, the first and second electrodes may be,

For the description of the time information, reference may be made to the corresponding description of the second embodiment, which is not described herein again, and the same beneficial effects may be achieved.

In the embodiment of the invention, PSS is searched on a plurality of frequency domain resources; after PSS is searched, SSS and PBCH signals are searched on frequency domain resources corresponding to the PSS, and the PBCH signals are demodulated to obtain MIB, so that compared with the prior art, the complexity of initial access of a user terminal is reduced, and the time of initial access of the user terminal is shortened; in addition, the user terminal can acquire the specific information of the whole frequency band by carrying the frequency domain position information in the MIB; the MIB carries the frequency domain position information, so that the user terminal can accurately realize time synchronization.

Fourth embodiment

Referring to fig. 7, fig. 7 is a structural diagram of a network side device according to an embodiment of the present invention, which can implement details of the transmission method of the synchronization access signal group in the first to third embodiments, and achieve the same effect. As shown in fig. 7, the network-side device 700 includes: a generating module 701 and a sending module 702, wherein:

a generating module 701, configured to generate a synchronization access signal set corresponding to a plurality of frequency domain resources, where the synchronization access signal set includes PSS, SSS, and PBCH signals, and the PBCH signals include a master information block MIB;

a sending module 702, configured to send, on different frequency resources, a synchronization access signal group corresponding to the frequency resource by using different beams, respectively.

Optionally, the sending module 702 is configured to send the synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources respectively by using beams in different directions.

Optionally, in this embodiment, the MIB includes frequency domain location information, where the frequency domain location information corresponds to a frequency sub-band of a synchronization access signal group where the MIB is sent.

Optionally, the frequency domain location information includes:

Optionally, the reference resource block includes:

Optionally, the sending module 702 is configured to send, on different frequency domain resources, the synchronization access signal groups corresponding to the frequency domain resources respectively according to different sending times by using different beams.

Optionally, the time information includes:

alternatively, the first and second electrodes may be,

In the network side device of the embodiment of the invention, a synchronous access signal group corresponding to a plurality of sub-frequency bands is generated, wherein the synchronous access signal group comprises a PSS signal, a SSS signal and a PBCH signal, the PBCH signal comprises an MIB, and each sub-frequency band comprises a plurality of resource blocks; and respectively transmitting the synchronous access signal groups corresponding to the sub-frequency bands on the different sub-frequency bands by using different beams. Through a plurality of sub-frequency bands and different wave beams used on different sub-frequency bands to send the synchronous access signal group, the signal delay of the synchronous access signal group can be reduced, and the initial access time of the user terminal is shortened.

Fifth embodiment

Referring to fig. 8, fig. 8 is a structural diagram of a user terminal according to an embodiment of the present invention, which can implement details of a synchronization method in the fourth embodiment and achieve the same effect. As shown in fig. 8, the user terminal 800 includes: a first search module 801 and a second search module 802, wherein:

a first search module 801 for searching for PSS over a plurality of frequency domain resources;

a second searching module 802, configured to search, after the PSS is searched, SSS and PBCH signals in the frequency domain resource corresponding to the PSS, and demodulate the PBCH signals to obtain a master information block MIB.

Optionally, the frequency domain resource is a sub-band, and each sub-band includes a plurality of resource blocks

Optionally, in this embodiment, the MIB includes frequency domain location information, where the frequency domain location information corresponds to a sub-band of a synchronization access signal group where the MIB is sent;

as shown in fig. 9, the ue 800 further includes:

a determining module 803, configured to obtain frequency domain location information from the MIB, and determine, according to the frequency domain location information, a sub-band of a synchronization access signal group where the MIB is located.

Optionally, the frequency domain location information includes:

Optionally, the reference resource block includes:

as shown in fig. 10, the user terminal 800 further includes:

a synchronization module 804, configured to obtain time information from the MIB, and perform frame synchronization according to the time information.

Optionally, the time information includes:

alternatively, the first and second electrodes may be,

In the user terminal of the embodiment of the invention, PSS is searched on a plurality of frequency domain resources; after PSS is searched, SSS and PBCH signals are searched on frequency domain resources corresponding to the PSS, and the PBCH signals are demodulated to obtain MIB, so that compared with the prior art, the complexity of initial access of a user terminal is reduced, and the time of initial access of the user terminal is shortened; in addition, the user terminal can acquire the specific information of the whole frequency band by carrying the frequency domain position information in the MIB; the MIB carries the frequency domain position information, so that the user terminal can accurately realize time synchronization.

Sixth embodiment

Referring to fig. 11, fig. 11 is a structural diagram of a network side device applied in the embodiment of the present invention, which can implement details of the transmission methods of the synchronous access signal groups in the first to third embodiments, and achieve the same effects. As shown in fig. 11, the network-side device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, wherein:

a processor 1101 for reading the program in the memory 1103 and executing the following processes:

generating a set of synchronization access signals corresponding to a plurality of frequency domain resources, the set of synchronization access signals comprising PSS, SSS and PBCH signals, the PBCH signals comprising a master information block, MIB;

Among other things, a transceiver 1102 is used for receiving and transmitting data under the control of the processor 1101.

In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 1101, and various circuits, represented by memory 1103, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1102 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 1104 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.

Optionally, the sending, by using different beams, the synchronization access signal groups corresponding to the frequency domain resources on different frequency domain resources respectively includes:

and respectively transmitting the synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources by using beams in different directions.

The MIB contains frequency domain position information corresponding to a sub-band of a synchronous access signal group where the MIB is sent.

Optionally, the frequency domain location information includes:

Optionally, the reference resource block includes:

Optionally, the MIB includes time information, and the time information corresponds to a sending time of a set of synchronous access signals where the MIB is sent.

Optionally, the time information includes:

alternatively, the first and second electrodes may be,

Seventh embodiment

Referring to fig. 12, fig. 12 is a structural diagram of a user equipment applied in the embodiment of the present invention, which can implement details of the system information block transmission method in the first embodiment to the second embodiment, and achieve the same effect. As shown in fig. 12, the user terminal 1200 includes: at least one processor 1201, memory 1202, at least one network interface 1204, and a user interface 1203. The various components in user terminal 1200 are coupled together by a bus system 1205. It is understood that bus system 1205 is used to enable connected communication between these components. Bus system 1205 includes, in addition to a data bus, a power bus, a control bus, and a status signal bus. But for clarity of illustration the various buses are labeled as bus system 1205 in figure 12.

The user interface 1203 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, track ball, touch pad, or touch screen, etc.

It is to be understood that the memory 1202 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1202 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1202 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 12021 and application programs 12022.

The operating system 12021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 12022 contains various applications such as a Media Player (Media Player), a Browser (Browser), and the like, and is used to implement various application services. A program implementing a method according to an embodiment of the present invention may be included in the application 12022.

In the embodiment of the present invention, by calling a program or an instruction stored in the memory 1202, specifically, a program or an instruction stored in the application program 12022, the processor 1201 is configured to: searching for a PSS over a plurality of frequency domain resources; and searching SSS and PBCH signals on frequency domain resources corresponding to the PSS after the PSS is searched, and demodulating the PBCH signals to obtain MIB.

The method disclosed by the embodiment of the invention can be applied to the processor 1201 or implemented by the processor 1201. The processor 1201 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 1201. The Processor 1201 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1202, and the processor 1201 reads information in the memory 1202 and completes the steps of the above method in combination with hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

after the PBCH signal is demodulated to obtain MIB, the processor 1201 is further configured to:

Optionally, the frequency domain location information includes:

Optionally, the reference resource block includes:

Optionally, the time information includes:

alternatively, the first and second electrodes may be,

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 invention.

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 embodiments provided in the present application, it should be understood that the disclosed 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 of the present invention.

In addition, functional units in the embodiments of the present invention 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 invention may be embodied in the form of a software product, which is stored in a storage medium and includes 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 invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention 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 invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A transmission method of a synchronous access signal group is applied to network side equipment and is characterized by comprising the following steps:

generating a synchronization access signal group corresponding to a plurality of frequency domain resources, the synchronization access signal group comprising Primary Synchronization Signals (PSS), Secondary Synchronization Signals (SSS) and Physical Broadcast Channel (PBCH) signals, the PBCH signals comprising a Master Information Block (MIB);

using different beams to respectively send synchronous access signal groups corresponding to the frequency domain resources on different frequency domain resources;

the frequency domain resources are sub-bands, each sub-band comprises a plurality of resource blocks, the MIB comprises frequency domain position information, and the frequency domain position information corresponds to the sub-band of the synchronous access signal group where the MIB is sent.

2. The method of claim 1, wherein the transmitting the sets of synchronization access signals corresponding to the frequency domain resources on the different frequency domain resources using different beams respectively comprises:

3. The method of claim 1, wherein the frequency domain location information comprises:

4. The method of claim 3, wherein the reference resource block comprises:

5. The method of claim 1, wherein the transmitting the sets of synchronization access signals corresponding to the frequency domain resources on the different frequency domain resources using different beams respectively comprises:

6. The method of claim 5, wherein the MIB contains time information corresponding to a transmission time of a set of synchronized access signals from which the MIB is transmitted.

7. The method of claim 6, wherein the time information comprises:

alternatively, the first and second electrodes may be,

8. A transmission method of a synchronous access signal group is applied to a user terminal, and is characterized by comprising the following steps:

searching a primary synchronization signal PSS on a plurality of frequency domain resources;

after PSS is searched, searching a secondary synchronization signal SSS and a physical broadcast channel PBCH signal on a frequency domain resource corresponding to the PSS, and demodulating the PBCH signal to obtain a master information block MIB, wherein the frequency domain resource is a sub-frequency band, each sub-frequency band comprises a plurality of resource blocks, the MIB comprises frequency domain position information, and the frequency domain position information corresponds to a sub-frequency band of a synchronous access signal group where the MIB is sent;

9. The method of claim 8, wherein the frequency domain location information comprises:

10. The method of claim 9, wherein the reference resource block comprises:

11. The method of claim 8, wherein the MIB contains time information corresponding to a transmission time of a set of synchronous access signals in which the MIB is transmitted;

12. The method of claim 11, wherein the time information comprises:

alternatively, the first and second electrodes may be,

13. A network-side device, comprising:

a generating module, configured to generate a synchronization access signal group corresponding to a plurality of frequency domain resources, where the synchronization access signal group includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH signal, and the PBCH signal includes a master information block MIB;

a sending module, configured to send, on different frequency domain resources, a set of synchronization access signals corresponding to the frequency domain resource using different beams, respectively;

14. The network-side device of claim 13, wherein the sending module is configured to send the sets of synchronization access signals corresponding to the frequency-domain resources on different frequency-domain resources respectively by using beams in different directions.

15. The network-side device of claim 13, wherein the frequency domain location information comprises:

16. The network-side device of claim 15, wherein the reference resource block comprises:

17. The network-side device of claim 13, wherein the sending module is configured to send the synchronization access signal groups corresponding to the frequency-domain resources on different frequency-domain resources respectively according to different sending times by using different beams.

18. The network-side device of claim 17, wherein the MIB contains time information corresponding to a transmission time of a set of synchronization access signals in which the MIB is transmitted.

19. The network-side device of claim 18, wherein the time information comprises:

alternatively, the first and second electrodes may be,

20. A user terminal, comprising:

a first searching module, configured to search for a primary synchronization signal PSS over a plurality of frequency domain resources;

a second searching module, configured to search, after a PSS is searched, a secondary synchronization signal SSS and a physical broadcast channel PBCH signal on a frequency domain resource corresponding to the PSS, and demodulate the PBCH signal to obtain a master information block MIB, where the frequency domain resource is a sub-band, each sub-band includes multiple resource blocks, the MIB includes frequency domain location information, and the frequency domain location information corresponds to a sub-band of a synchronization access signal group where the MIB is sent;

and the determining module is used for acquiring frequency domain position information from the MIB and determining the sub-frequency band of the synchronous access signal group where the MIB is sent according to the frequency domain position information.

21. The ue of claim 20, wherein the frequency domain location information comprises:

22. The ue of claim 21, wherein the reference resource block comprises:

23. The ue of claim 20, wherein the MIB contains time information corresponding to a transmission time of a set of synchronized access signals at which the MIB is transmitted;

the user terminal further comprises:

and the synchronization module is used for acquiring the time information from the MIB and carrying out frame synchronization according to the time information.

24. The ue of claim 23, wherein the time information comprises:

alternatively, the first and second electrodes may be,

25. A transmission system for synchronizing access signal groups, comprising a network side device according to any one of claims 13 to 19 and a user terminal according to any one of claims 20 to 24.