CN106851816B

CN106851816B - Synchronization method, device and system

Info

Publication number: CN106851816B
Application number: CN201710063476.3A
Authority: CN
Inventors: 戴明晔; 李明菊; 朱亚军; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2017-02-03
Filing date: 2017-02-03
Publication date: 2020-08-14
Anticipated expiration: 2037-02-03
Also published as: CN106851816A

Abstract

The application discloses a synchronization method, a synchronization device and a synchronization system, wherein the method comprises the following steps: the network equipment determines beam indication information of the synchronization signal according to the time domain position of a beam used for sending the synchronization signal by the network equipment, wherein the beam indication information is used for indicating the time domain position, and the network side equipment sends the synchronization signal through the beam; the beam indication information is transmitted. In the embodiment of the application, the network device indicates the time domain position of the beam used for sending the synchronization signal through the beam indication information, so that the user device can determine the time domain position of the beam where the synchronization signal is located, and time domain synchronization between the user side and the network side is realized.

Description

Synchronization method, device and system

Technical Field

The present application relates to the field of communications, and in particular, to a synchronization method, apparatus, and system.

Background

The main scenes of the future 5G communication include the following three scenes: enhanced mobile broadband (eMBB), large-scale internet of things (mtc) and Low-Latency high-reliability connectivity (URLLC), which are different in service types and requirements for the three scenarios.

For example, for the eMBB service, two main indicators are high bandwidth and low latency (4 ms required). In future high frequency communication, a large bandwidth of 100MHz may be supported, and it is likely that the entire bandwidth is directly allocated to one user at a time. And uplink scheduling delay and HARQ feedback delay also bring delay influence.

The mtc service requires a narrow-band service, which requires a long battery life, and requires a frequency domain with a smaller granularity and a time domain resource with a wider granularity.

For URLLC, the delay requirement is 0.5ms, and it is also necessary to reduce the time-domain scheduling granularity, the uplink scheduling delay, and the delay impact caused by HARQ feedback delay.

At present, a fixed frame structure in a TDD system and a fixed uplink and downlink carrier frequency in an FDD system are separated, time domain resource granularity, a larger scheduling delay, a longer HARQ feedback delay, a smaller carrier bandwidth, and the like, which cannot meet the service requirements of 5G communication diversity and are not flexible enough.

Due to different service types, the subcarrier intervals for transmitting the synchronization signal and the broadcast signal in a certain time of each carrier are different, so that the transmission time length and the transmission bandwidth of the synchronization signal and the broadcast channel are different. Meanwhile, under the condition of a high frequency band, due to strong fading, the coverage area of a cell is small, and in order to enlarge the coverage area, the broadcast channel of the synchronization signal can be transmitted based on the wave beam.

If different beams are transmitted by using different time domain resources or different frequency domain resources, in order to achieve time domain and frequency domain synchronization, a user must know the accurate position of the beam received by the user in the time domain and the frequency domain.

How to determine the time domain position of the received beam is a technical problem to be solved by the application.

Disclosure of Invention

In a first aspect, a synchronization method is provided, including: determining beam indication information of a synchronization signal according to a time domain position of a beam used by network side equipment for sending the synchronization signal, wherein the beam indication information is used for indicating the time domain position, and the network side equipment sends the synchronization signal through the beam; the beam indication information is transmitted.

With reference to the first aspect, in a first possible implementation manner, determining, according to a time domain position of a beam used by a network side device to send a synchronization signal, beam indication information of the synchronization signal is specifically implemented as: determining a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is also used for representing the beam indication information through a sequence number;

the sending of the beam indication information is specifically realized as: the secondary synchronization signal sequence is transmitted on the beam.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the method is specifically implemented as:

when the secondary synchronization signal sequence is used to jointly represent the cell identifier of the cell to which the synchronization signal belongs with the primary synchronization signal sequence in the synchronization signal, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M1 by the sequence number of the secondary synchronization signal sequence and the primary synchronization signal sequence, the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1, wherein M1 is the total number of cells that can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by the total number of the primary synchronization signal sequence; or

When the secondary synchronization signal sequence is used to independently represent the cell identifier of the cell to which the synchronization signal belongs, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 with the sequence number of the secondary synchronization signal sequence, and the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2, where M2 is the total number of cells that can be represented by the secondary synchronization signal sequence.

With reference to the first aspect, in a third possible implementation manner of the first aspect, determining the beam indication information of the synchronization signal according to the time domain position of the beam used by the network side device to send the synchronization signal is specifically implemented as: determining a second auxiliary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device for transmitting the synchronization signal, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of a first auxiliary synchronization signal sequence in the synchronization signal, the second auxiliary synchronization signal sequence is used for representing the beam indication information, the first auxiliary synchronization signal sequence is used for jointly representing an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs;

the sending of the beam indication information is specifically realized as: and transmitting the secondary synchronization signal sequence formed by interleaving the first secondary synchronization signal sequence and the second secondary synchronization signal sequence in the frequency domain to the user equipment on the beam.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the method is specifically implemented as: the first auxiliary synchronization signal sequence is formed by sequences at even positions in the auxiliary synchronization signal sequence, and the second auxiliary synchronization signal sequence is formed by sequences at odd positions in the auxiliary synchronization signal sequence; alternatively, the first secondary synchronization signal sequence is composed of a sequence at an odd number position in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is composed of a sequence at an even number position in the secondary synchronization signal sequence.

With reference to the first aspect, in a fifth possible implementation manner of the first aspect, determining, according to a time domain position of a beam used by a network side device to send a synchronization signal, beam indication information of the synchronization signal is specifically implemented as: determining at least one designated bit in broadcast information and a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side equipment for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is also used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and the at least one designated bit in the broadcast channel;

the sending of the beam indication information is specifically realized as: transmitting the secondary synchronization signal sequence on the beam; the broadcast information is transmitted on a broadcast channel.

With reference to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the method is specifically implemented as:

when the secondary synchronization signal sequence is used to jointly represent the cell identifier of the cell to which the synchronization signal belongs with the primary synchronization signal sequence in the synchronization signal, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M1 by the sequence number of the secondary synchronization signal sequence and the primary synchronization signal sequence, and the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1 and a value of the at least one designated bit in the broadcast channel, wherein M1 is the total number of cells that can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by the total number of the primary synchronization signal sequences; or

When the secondary synchronization signal sequence is used to independently represent the cell identifier of the cell to which the synchronization signal belongs, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 with the sequence number of the secondary synchronization signal sequence, and the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2, which is an integer, and a value of the at least one designated bit in the broadcast channel, where M2 is the total number of cells that can be represented by the secondary synchronization signal sequence.

With reference to the first aspect and the foregoing implementation manner of the first aspect, in a seventh possible implementation manner of the first aspect, the implementation manner is specifically that: the beam indication information is used to indicate a subframe number and a symbol position of a time domain position of a beam used to transmit the synchronization signal. .

In a second aspect, a network side device is proposed, configured to perform the method in the first aspect or any possible implementation manner of the first aspect.

In particular, the apparatus may comprise means or modules for performing the method of the first aspect or any possible implementation manner of the first aspect.

In a third aspect, there is provided another network side device, including a processor, a transmitter, and a receiver, where the processor is configured to execute the method in the first aspect or any possible implementation manner of the first aspect through the transmitter and the receiver.

In a fourth aspect, a computer-readable storage medium is presented for storing a computer program comprising instructions for performing the method of the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, a synchronization method is provided, including:

receiving beam indication information sent by network side equipment, wherein the beam indication information is used for a time domain position of a beam used by the network side equipment for sending a synchronization signal, and the network side equipment sends the synchronization signal through the beam; and determining the time domain position of the beam for transmitting the synchronization signal according to the beam indication information, and performing time domain synchronization with the network side equipment.

With reference to the fifth aspect, in a first possible implementation manner, before receiving the beam indication information sent by the network side device, the method further includes: detecting a beam;

receiving beam indication information sent by a network side device, specifically implemented as: receiving an auxiliary synchronization signal sequence in a synchronization signal sent by the network side device on a detected beam, wherein the auxiliary synchronization signal sequence is used for jointly representing a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the auxiliary synchronization signal sequence is also used for representing the beam indication information through a sequence number;

wherein, according to the beam indication information, determining a time domain position of a beam used for transmitting the synchronization signal is specifically implemented as follows: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the secondary synchronization signal sequence.

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect,

With reference to the fifth aspect, in a third possible implementation manner of the fifth aspect, before receiving the beam indication information sent by the network side device, the method further includes: detecting a beam;

receiving beam indication information sent by a network side device, specifically implemented as: receiving an auxiliary synchronization signal sequence formed by interleaving a first auxiliary synchronization signal sequence and a second auxiliary synchronization signal sequence in a frequency domain on a detected beam, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of the first auxiliary synchronization signal sequence, the second auxiliary synchronization signal sequence is used for representing the beam indication information through a sequence number, the first auxiliary synchronization signal sequence is used for jointly representing an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence of the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs;

wherein, according to the beam indication information, determining the time domain position of the synchronization signal comprises: and determining the time domain position of the beam according to the sequence number of the second auxiliary synchronization signal sequence.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the implementation manner is specifically that: the first auxiliary synchronization signal sequence is formed by sequences at even positions in the auxiliary synchronization signal sequence, and the second auxiliary synchronization signal sequence is formed by sequences at odd positions in the auxiliary synchronization signal sequence; alternatively, the first secondary synchronization signal sequence is composed of a sequence at an odd number position in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is composed of a sequence at an even number position in the secondary synchronization signal sequence.

With reference to the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the implementation manner is specifically that: before receiving the beam indication information sent by the network side device, the method further includes: detecting a beam;

receiving beam indication information sent by a network side device, specifically implemented as: receiving a secondary synchronization signal sequence in the synchronization signal on the detected beam, and receiving broadcast information on a broadcast channel, wherein the secondary synchronization signal sequence is used for indicating a cell identifier of a cell to which the synchronization signal belongs in combination with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information by a sequence number of the secondary synchronization signal sequence and a value of at least one designated bit in the broadcast channel;

wherein, according to the beam indication information, determining a time domain position of a beam used for transmitting the synchronization signal is specifically implemented as follows: and determining the time domain position of the beam according to the value of the designated bit in the broadcast information and the sequence number of the secondary synchronization signal sequence.

With reference to the fifth possible implementation manner of the fifth aspect, in a sixth possible implementation manner of the fifth aspect, the implementation manner is specifically that:

With reference to the fifth aspect and the foregoing implementation manner of the fifth aspect, in a seventh possible implementation manner of the fifth aspect, the implementation manner is specifically that: the beam indication information is used to indicate a subframe number and a symbol position of a time domain position of a beam used to transmit the synchronization signal.

In a sixth aspect, a user equipment is proposed for performing the method of the fifth aspect or any of its possible implementations.

In particular, the apparatus may comprise means or modules for performing the method of the fifth aspect or any possible implementation of the fifth aspect.

In a seventh aspect, another user equipment is provided, which includes a processor, a transmitter, and a receiver, where the processor is configured to execute the method in any possible implementation manner of the fifth aspect or the fifth aspect.

In an eighth aspect, a computer-readable storage medium is presented for storing a computer program comprising instructions for performing the method of the fifth aspect or any possible implementation of the fifth aspect.

A ninth aspect proposes a communication system, which includes the network side device in the second aspect and its possible implementation manner, and the user equipment in the sixth aspect and its possible implementation manner; or comprises the network side device in the third aspect and its possible implementations, and the user equipment in the seventh aspect and its possible implementations.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the network side equipment indicates the time domain position of the beam for sending the synchronous signal according to the beam indication information, so that the user equipment can determine the time domain position of the beam where the synchronous signal is located, and the synchronization of the user side and the network side is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a detailed flowchart of a synchronization method according to an embodiment of the present application.

FIG. 2 is an interaction flow diagram of a synchronization method according to an embodiment of the present application.

Fig. 3 is an interaction flow diagram of a synchronization method according to another embodiment of the present application.

FIG. 4 is an interaction flow diagram of a synchronization method of yet another embodiment of the present application.

Fig. 5 is a detailed flowchart of a synchronization method according to another embodiment of the present application.

Fig. 6 is a schematic structural diagram of a network-side device according to an embodiment of the present application.

Fig. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a network-side device according to another embodiment of the present application.

Fig. 9 is a schematic structural diagram of a user equipment according to another embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. 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 application.

The technical scheme of the invention can be applied to various communication systems, such as: global system for Mobile communications (GSM), Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA), General Packet Radio Service (GPRS), Long Term Evolution (LTE), and the like.

To facilitate understanding of the embodiments of the present application, several elements that will be introduced in the description of the embodiments of the present application are first introduced herein.

User Equipment (UE), also referred to as Mobile Terminal (Mobile Terminal), Mobile User Equipment (ms), etc., may communicate with one or more core networks via a Radio Access Network (e.g., RAN), and may be Mobile terminals, such as Mobile phones (or "cellular" phones) and computers having Mobile terminals, such as portable, pocket, hand-held, computer-included, or vehicle-mounted Mobile devices, which exchange language and/or data with the Radio Access Network.

The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, or an evolved Node B (eNB or e-NodeB) in LTE, but the present invention is not limited thereto, and for convenience of description, the following embodiments use eNB as an example for explanation.

Physical Cell Identifier (PCI), which is referred to as Cell Identifier for short. In a Long Term Evolution (LTE) system, 504 PCIs are provided for a cell, and each cell can be configured with an identifier between 0 and 503. The LTE cell search procedure is implemented by retrieving a Primary Synchronized Signal (PSS) and a Secondary Synchronized Signal (SSS). The primary synchronization signal sequence has 3 possibilities, and the secondary synchronization signal sequence has 168 possibilities, which are combined to determine the specific cell ID, and 168 × 3 — 504.

Fig. 1 is a detailed flowchart of a synchronization method according to an embodiment of the present application. The method of fig. 1 is performed by a network side device. Specifically, the network-side device may be a device on the network side, such as a base station, an Access Point (Access Point), or a Radio Network Controller (RNC). The method of fig. 1 may include:

s101, determining beam indication information of the synchronization signal according to the time domain position of the beam used by the network side equipment for sending the synchronization signal.

Wherein, the beam indication information is used to indicate the time domain position, and the network side device sends the synchronization signal through a beam.

It should be understood that, in the embodiment of the present application, the network side device may send a synchronization signal and a Physical Broadcast Channel (PBCH) to the user equipment through the beam. In the embodiment of the present application, the beams used by the respective user equipments to transmit signals may be different.

Alternatively, the time domain position indicated by the beam indication information may be a subframe number and a symbol position of the time domain position of the beam transmitting the synchronization signal.

Or, optionally, the time domain position indicated by the beam indication information is a transmission time number of the synchronization signal. For example, several transmit beams may be scheduled and numbered. When the network side device sends the beam indication information, the number of the transmission time can be directly indicated so as to inform the user equipment. Of course, it should be understood that the number of the transmission time may be specified by a protocol or pre-agreed by the network side device and the user equipment.

It should be understood that, after the user equipment determines the time domain position of the synchronization signal through the beam indication information, the user equipment may determine the time domain resource occupied by the beam transmitting the synchronization signal, thereby implementing synchronization in the time domain. The frequency domain synchronization method may refer to a method of determining and synchronizing frequency domain resources in LTE in the prior art, or adopt other implementation methods, which is not limited in the embodiments of the present application.

Further, the time domain position of the beam may correspond to a predetermined time-frequency resource. The network side device may determine the frequency domain resource and the time domain resource used by the beam according to the time domain position of the beam.

And S102, the beam indication information is sent to the user equipment on the beam.

In the embodiment of the application, the time domain position of the beam used for sending the synchronization signal is indicated according to the beam indication information, so that the user equipment can determine the time domain position of the beam where the synchronization signal is located, and the synchronization between the user side and the network side is realized.

Optionally, as an embodiment, the step S101 is specifically implemented as: determining an auxiliary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the auxiliary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the auxiliary synchronization signal sequence is also used for representing the beam indication information through a sequence number;

wherein, step S102 is specifically implemented as: the secondary synchronization signal sequence is transmitted on the beam.

It should be appreciated that the cell ID may be indicated in a variety of ways. For example, SSS indicates cell ID in combination with PSS, or SSS indicates cell ID independently, PSS is not required, and so on.

In the embodiment of the application, the beam indication information is represented by the secondary synchronization signal sequence, so that the resource of the secondary synchronization signal sequence can be fully utilized, and no additional channel resource is occupied.

Optionally, in a possible implementation manner of this embodiment, when the secondary synchronization signal sequence is used to jointly represent a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M1 by a sequence number of the secondary synchronization signal sequence and the primary synchronization signal sequence, and the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1 and then dividing the value by an integer, where M1 is a total number of cells that can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by a total number of the primary synchronization signal sequences.

For example, SSS and PSS jointly indicate 504 cell IDs, the number of SSSs is 168, and the number of PSS is 3, and then M1 takes the value of 168.

Or, optionally, in another possible implementation manner of this embodiment, when the secondary synchronization signal sequence is used to independently represent a cell identifier of a cell to which the synchronization signal belongs, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 by a sequence number of the secondary synchronization signal sequence, and the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2, where M2 is the total number of cells that can be represented by the secondary synchronization signal sequence.

For example, if only 168 SSS are used to represent the cell ID, then M2 takes the value 168. Of course, it should be understood that, in practical applications, there may be differences in the representation methods and numbers of the cell IDs, and the embodiment of the present application does not limit this.

Optionally, as another embodiment, step S101 is specifically implemented as: determining a second auxiliary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device for transmitting the synchronization signal, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of a first auxiliary synchronization signal sequence in the synchronization signal, the second auxiliary synchronization signal sequence is used for representing the beam indication information, the first auxiliary synchronization signal sequence is used for jointly representing an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs;

wherein, step S102 is specifically implemented as: and transmitting the secondary synchronization signal sequence formed by interleaving the first secondary synchronization signal sequence and the second secondary synchronization signal sequence in the frequency domain to the user equipment on the beam.

In the embodiment of the application, a new secondary synchronization signal is introduced to indicate the time domain position of the beam used for transmitting the synchronization signal, so that more beams can be indicated.

Further, in this embodiment, the first secondary synchronization signal sequence is composed of sequences at even positions in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is composed of sequences at odd positions in the secondary synchronization signal sequence; alternatively, the first secondary synchronization signal sequence is composed of a sequence at an odd number position in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is composed of a sequence at an even number position in the secondary synchronization signal sequence.

Optionally, as another embodiment, step S101 is specifically implemented as: determining at least one designated bit in broadcast information and a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side equipment for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is also used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and the at least one designated bit in the broadcast channel;

wherein, step S102 is specifically implemented as: transmitting the secondary synchronization signal sequence on the beam; the broadcast information is transmitted on a broadcast channel.

Optionally, in a possible implementation manner of this embodiment, when the secondary synchronization signal sequence is used to jointly represent a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M1 by a sequence number of the secondary synchronization signal sequence and the primary synchronization signal sequence, and the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1 and a value of the at least one designated bit in the broadcast channel, where M1 is the total number of cells that can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by the total number of the primary synchronization signal sequences.

Or, optionally, in another possible implementation manner of this embodiment, when the secondary synchronization signal sequence is used to independently represent a cell identifier of a cell to which the synchronization signal belongs, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 by a sequence number of the secondary synchronization signal sequence, and the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2 and a value of the at least one indication bit in the broadcast channel, where M2 is the total number of cells that can be represented by the secondary synchronization signal sequence.

The method of the embodiments of the present application will be further described with reference to specific embodiments.

FIG. 2 is an interaction flow diagram of a synchronization method according to an embodiment of the present application. In the scenario shown in fig. 2, the network-side device may be a base station, an AP, an RNC, or the like, and the embodiment of the present application is not limited herein. In the embodiment of the present application, the cell ID is represented by a primary synchronization signal and a secondary synchronization signal.

The method of fig. 2 may include:

201, the network side device determines a primary synchronization signal sequence and a secondary synchronization signal sequence.

The network side device may refer to the prior art or adopt a new implementation manner to determine the primary synchronization signal sequence, which is not limited in this embodiment of the present application.

For the sequences used for the secondary synchronization signal sequence, such as m-sequences, a total of 31 × 30 to 930 sequences can be generated. In a cell ID identification scheme in the prior art, only 168 sequences among the secondary synchronization signal sequences are used for indicating the cell ID, and the cell ID is represented in association with the primary synchronization signal sequence.

In the embodiment of the present application, the secondary synchronization signal sequence may be used to indicate the cell ID jointly with the primary synchronization signal sequence, or may be used to indicate the beam indication information separately to indicate the time domain position of the beam.

Alternatively, as an embodiment, the secondary synchronization signal sequence of the embodiment of the present application may use a sequence number between 0 and 929. And taking a modulus of the serial number of the auxiliary synchronization signal sequence to 168, wherein the modulus value is 0-167, and at the moment, the modulus value can be used for jointly representing the cell ID with the main synchronization signal sequence. Meanwhile, rounding operation can be performed after the sequence number of the secondary synchronization signal sequence is divided by 168, and the obtained value is used as beam indication information to represent the time domain position of the beam. It should be understood that rounding operations of embodiments of the present application, including rounding up or rounding down, are performed, for example, by rounding up 929/168, which takes the value of 6; the lower integer 929/168 is rounded to a value of 5. In the embodiment of the present application, the secondary synchronization signal sequence of each cell may represent at least 5 time domain positions and at most 6 time domain positions.

At this time, the primary synchronization signal sequence and the secondary synchronization signal sequence may be determined according to the time domain position of the beam used by the network side device to transmit the synchronization signal and the cell ID of the user equipment.

202, the network side equipment sends a primary synchronization signal sequence and a secondary synchronization signal sequence.

After determining the primary synchronization signal sequence and the secondary synchronization signal sequence, the network side device may send the primary synchronization signal sequence and the secondary synchronization signal sequence on the beam.

The user equipment determines 203 the cell identity and the time domain position of the beam used for transmitting the synchronization signal.

After the user equipment detects the beam signal, the ID of the cell may be determined based on the primary synchronization signal sequence and the secondary synchronization signal sequence transmitted on the beam. Specifically, the cell ID is represented by the sequence number of the secondary synchronization signal sequence modulo 168 and the primary synchronization signal sequence.

In addition, the ue may further determine the time domain position of the beam used for transmitting the synchronization signal, or determine the time domain position of the beam to which the synchronization signal belongs, according to the value obtained by dividing the sequence number of the secondary synchronization signal sequence by 168 and rounding.

It should be understood that the time domain position may be a time domain position of a symbol in which the primary synchronization signal is located, or a time domain position of a symbol in which the secondary synchronization signal is located, or other time domain positions related to the synchronization signal, and the embodiments of the present application are not limited herein.

And 204, the user equipment determines the time domain resource corresponding to the beam according to the time domain position of the beam and synchronizes.

After the user equipment determines the time domain position of the beam, the time domain resource corresponding to the time domain position of the beam can be determined according to the time domain position of the beam. In addition, the user equipment may also determine the frequency resource of the cell according to a method for determining the frequency resource in the prior art, or determine the frequency resource of the cell by other manners, which is not limited herein in this embodiment of the present application.

After the user equipment determines the time domain resource and the frequency domain resource, time-frequency synchronization can be performed based on the time domain resource, the frequency domain resource and the synchronization signal.

Fig. 3 is an interaction flow diagram of a synchronization method according to another embodiment of the present application. In the embodiment of the present application, the cell ID is represented by a primary synchronization signal and a secondary synchronization signal. The method of fig. 3 may include:

301, the network side device determines a primary synchronization signal sequence, a first secondary synchronization signal sequence and a second secondary synchronization signal sequence.

The method for determining the first secondary synchronization signal sequence by the network side device may be the same as the method for determining the secondary synchronization signal sequence in the prior art, or other specific implementation manners are adopted, and the embodiment of the present application is not limited herein.

The network side device may number the time domain positions of the beams and may be represented by sequence numbers of the second secondary synchronization signal sequence, where one sequence number corresponds to a time domain position of one beam. Further, the sequence number of the second secondary synchronization signal sequence may also represent a time-frequency resource occupied by the beam.

The second secondary synchronization signal sequence may be constructed in a manner that refers to the first secondary synchronization signal sequence, or in a manner that is different from the first secondary synchronization signal sequence, and the embodiment of the present application is not limited herein. It should be understood that the generator polynomial of the second secondary synchronization signal sequence and the first secondary synchronization signal sequence should be different. The existing auxiliary synchronization signal sequence uses 3 kinds of polynomial combinations in the construction process, and the second auxiliary synchronization signal sequence of the embodiment of the application should avoid the 3 kinds of polynomials as much as possible in the construction.

Alternatively, for example, the second secondary synchronization signal sequence may use the following polynomial: when n is 4, the generator polynomial (or primitive polynomial) of the m-sequence is x (n +5) ═ x (n +4) + x (n +1) + x (n), where x (0) ═ 0, x (1) ═ 0, x (2) ═ 0, x (3) ═ 0, and x (4) ═ 1.

Specifically, taking the example of dividing 1 frame into 10 subframes and dividing 1 subframe into 28 symbols, in 1 frame, according to the subframe number ID_subframeAnd symbol serial number ID_symbol280 combinations can be generated, the 280 combinations are numbered 0-279 in sequence and are marked as ID, and then the ID is 28 ID_subframe+ID_symbol。

And establishing a mapping relation between the ID and sequence numbers m2 (corresponding to the subframe sequence number) and m3 (corresponding to the symbol sequence number) by referring to a mapping relation (36.211Table6.11.2.1-1) between the physical layer cell ID group and the sequence numbers m0 and m1, wherein m2 and m3 represent the displacement number of the m sequence. One specific mapping relationship may be as shown in the following table:

table (b): ID to m2 and m3 mapping relation

Wherein, the table: the mapping of IDs to m2 and m3 may be protocol specified. Of course, it should be understood that the contents contained in the above table are only exemplary, and in practical applications, other tables may be adopted, and the embodiments of the present application are not limited herein.

At this time, the primary synchronization signal sequence, the first secondary synchronization signal sequence and the second secondary synchronization signal sequence may be determined according to the time domain position of the beam to be transmitted to the user equipment by the network side equipment and the cell ID of the user equipment.

302, the network side device sends a primary synchronization signal sequence, a first secondary synchronization signal sequence, and a second secondary synchronization signal sequence.

After determining the primary synchronization signal sequence, the first secondary synchronization signal sequence, and the second secondary synchronization signal sequence, the network side device may send the primary synchronization signal sequence, the first secondary synchronization signal sequence, and the second secondary synchronization signal sequence on the beam.

Specifically, when the network side device sends the first secondary synchronization signal sequence and the second secondary synchronization signal sequence, the first secondary synchronization signal sequence and the second secondary synchronization signal sequence may be processed and then sent.

Alternatively, the network side device may consider that the first secondary synchronization signal sequence and the second secondary synchronization signal sequence are interleaved in the frequency domain to form a new synchronization sequence d (n), where the length of the new synchronization sequence before the guard band is added is 62+ 62-124. Wherein the first secondary synchronization signal sequence occupies odd numbered positions of the new synchronization sequence and the second secondary synchronization signal sequence occupies even numbered positions of the new synchronization sequence; alternatively, the first secondary synchronization signal sequence occupies even-numbered positions of the new synchronization sequence and the second secondary synchronization signal sequence occupies odd-numbered positions of the new synchronization sequence.

Optionally, the network side device may consider that the first secondary synchronization signal sequence and the second secondary synchronization signal sequence are spliced on the frequency domain to form a new synchronization sequence d (n), where the first secondary synchronization signal sequence occupies a high-frequency position of the new synchronization sequence, and the second secondary synchronization signal sequence occupies a low-frequency position of the new synchronization sequence; alternatively, the first secondary synchronization signal sequence occupies a low frequency position of the new synchronization sequence and the second secondary synchronization signal sequence occupies a high frequency position of the new synchronization sequence.

Of course, other processing methods are possible, and the embodiments of the present application are not listed here.

303, the user equipment determines the cell identity and the time domain location of the beam used for transmitting the synchronization signal.

After the user equipment detects the beam signal, the ID of the cell may be determined based on the primary synchronization signal sequence and the first secondary synchronization signal sequence transmitted on the beam.

In addition, the user equipment can also acquire the time domain position of the beam according to the sequence number of the second auxiliary synchronization signal sequence. For example, the user equipment may obtain, through a table lookup, a subframe number and a symbol number corresponding to a sequence number of the second secondary synchronization signal sequence, thereby determining a time domain position of a beam used for transmitting the synchronization signal.

And 304, the user equipment determines the time domain resource corresponding to the beam according to the time domain position of the beam and synchronizes.

The specific implementation of step 304 can refer to step 204 in fig. 2, and is not described again.

FIG. 4 is an interaction flow diagram of a synchronization method of yet another embodiment of the present application. In the embodiment of the present application, the cell ID is represented by a primary synchronization signal and a secondary synchronization signal. The method of FIG. 4 may include:

401, a network side device determines a primary synchronization signal sequence, a secondary synchronization signal sequence, and broadcast information.

In this embodiment, the network side device jointly represents the beam indication information through the secondary synchronization signal sequence and at least one indication bit in the broadcast information.

The secondary synchronization signal sequence may be determined in a manner similar to that of determining the secondary synchronization signal sequence in step 201 of fig. 2, i.e., for indicating the cell ID and for indicating the beam indication information.

As can be seen from step 201 of fig. 2, the 930 sequence numbers may enable at least 5 secondary synchronization signal sequences for representing the beam indication information and at most 6 secondary synchronization signal sequences for representing the beam indication information to exist in the same cell.

If there are 1 indicator bits in the broadcast information for indicating the beam indication information, there may be 5 × 2 ═ 10 kinds of beam indication information or 6 × 2 ═ 12 kinds of beam indication information per cell.

Further, assume if there are N indicator bits in the broadcast informationFor representing beam indication information, there may be 5 x 2 per cell^NSeed beam indicating information, or presence 6 x 2^NAnd (4) beam indication information.

At this time, at least one designated bit representing beam indication information in the primary synchronization signal sequence, the secondary synchronization signal sequence and the broadcast information can be determined according to the time domain position of the beam to be transmitted to the user equipment by the network side equipment and the cell ID of the user equipment.

402, the network side device sends a primary synchronization signal sequence, a secondary synchronization signal sequence and broadcast information.

The network side equipment determines a main synchronous signal sequence, an auxiliary synchronous signal sequence and a broadcast channel, can send the main synchronous signal sequence and the auxiliary synchronous signal sequence on a wave beam, and then sends broadcast information on the broadcast channel.

The user equipment determines the cell identity and the time domain position of the beam used for transmitting the synchronization signal 403.

The ue may determine the cell identifier according to the primary synchronization signal sequence and the secondary synchronization signal sequence, and the specific implementation may refer to step 203 in fig. 2.

The user equipment can jointly determine the beam indication information according to the sequence number of the secondary synchronization signal sequence and at least one indication position used for representing the beam indication information in the broadcast information, and further determine the time domain position of the beam.

And 404, the user equipment determines the time domain resource corresponding to the beam according to the time domain position of the beam and synchronizes.

The specific implementation of step 404 can refer to step 204 of fig. 2, and is not described in detail.

Of course, it should be understood that in the embodiments shown in fig. 2-4 of the present application, 168 is a value obtained by dividing the total number of cells that can be represented by the secondary synchronization signal sequences and the primary synchronization signal sequences by the total number of the primary synchronization signal sequences, and other values may be adopted according to the protocol specification or the setting of the base station in a specific application.

Furthermore, it should be understood that in the embodiments shown in fig. 2-4 of the present application, if the secondary synchronization signal sequence is used to independently represent the cell identity of the cell to which the synchronization signal belongs, the primary synchronization signal is not required to be considered, and 168 is replaced by the total number of cells that can be represented by the secondary synchronization signal sequence.

Fig. 5 is a detailed flowchart of a synchronization method according to another embodiment of the present application. The method of fig. 5 is performed by a user equipment. The method of fig. 5 may include:

501, receiving beam indication information sent by a network side device.

The beam indication information is used for a time domain position of a beam used by the network side equipment for transmitting the synchronization signal, and the network side equipment transmits the synchronization signal through the beam.

Or, optionally, the time domain position indicated by the beam indication information is a transmission time number of the synchronization signal.

502, according to the beam indication information, determining a time domain position of a beam for transmitting the synchronization signal and performing time domain synchronization with the network side device.

In the embodiment of the application, the time domain position of the beam used for sending the synchronization signal is determined according to the beam indication information sent by the network side equipment, so that the time domain resource corresponding to the time domain position of the beam can be determined, and the synchronization between the user side and the network side is realized.

Optionally, the method may further comprise: determining a time-frequency resource corresponding to the wave beam according to the time domain position of the wave beam; and performing time-frequency synchronization according to the time-frequency resource.

Or, optionally, the method may further include: determining a time-frequency resource corresponding to the wave beam according to the wave beam indication information; and performing time-frequency synchronization according to the time-frequency resource.

Optionally, as an embodiment, before step 501, the method may further include: detecting a beam; in step 501, receiving the beam indication information sent by the network side device is specifically implemented as: receiving an auxiliary synchronization signal sequence in a synchronization signal sent by the network side device on a detected beam, wherein the auxiliary synchronization signal sequence is used for jointly representing a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the auxiliary synchronization signal sequence is also used for representing the beam indication information through a sequence number;

wherein, step 502 is specifically implemented as: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the secondary synchronization signal sequence.

Optionally, as another embodiment, before step 501, the method may further include: detecting a beam; in step 501, an auxiliary synchronization signal sequence formed by interleaving a first auxiliary synchronization signal sequence and a second auxiliary synchronization signal sequence in a frequency domain is received on a detected beam, where the second auxiliary synchronization signal sequence is different from a generator polynomial of the first auxiliary synchronization signal sequence, the second auxiliary synchronization signal sequence is used to represent the beam indication information by a sequence number, the first auxiliary synchronization signal sequence is used to jointly represent an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence of the synchronization signal or the first auxiliary synchronization signal sequence is used to independently represent a cell identifier of a cell to which the synchronization signal belongs;

wherein, step 502 is specifically implemented as: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the second auxiliary synchronization signal sequence.

Optionally, as still another embodiment, before step 501, the method may further include: detecting a beam; in step 501, receiving the beam indication information sent by the network side device is specifically implemented as: receiving a secondary synchronization signal sequence in the synchronization signal on the detected beam, and receiving broadcast information on a broadcast channel, wherein the secondary synchronization signal sequence is used for indicating a cell identifier of a cell to which the synchronization signal belongs in combination with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information by a sequence number of the secondary synchronization signal sequence and a value of at least one designated bit in the broadcast channel;

wherein, step 502 is specifically implemented as: and determining the time domain position of the beam for transmitting the synchronization signal according to the value of the at least one designated bit in the broadcast information and the sequence number of the secondary synchronization signal sequence.

For specific implementation of the embodiment shown in fig. 5, reference may be made to the method performed by the user equipment in the embodiment shown in fig. 2 to 4, which is not described again.

Fig. 6 is a schematic structural diagram of a network-side device 600 according to an embodiment of the present application. As shown in fig. 6, the network-side device 600 may include: a processing module 601 and a sending module 602, wherein,

a processing module 601, configured to determine, according to a time domain position of a beam used by the network side device 600 to send a synchronization signal, beam indication information of the synchronization signal, where the beam indication information is used to indicate the time domain position, and the network side device sends the synchronization signal through the beam;

a sending module 602, configured to send the beam indication information.

In the embodiment of the application, the time domain position of the beam used for sending the synchronization signal is indicated according to the beam indication information, so that the user equipment can determine the time domain position of the beam, and the synchronization between the user side and the network side is realized.

Optionally, as an embodiment, the processing module 601 is specifically configured to: determining an auxiliary synchronization signal sequence in the synchronization signal according to the time domain position of the beam used by the network side device 600 to transmit the synchronization signal and the cell to which the synchronization signal belongs, wherein the auxiliary synchronization signal sequence is used to jointly represent the cell identifier of the cell to which the synchronization signal belongs with the primary synchronization signal sequence in the synchronization signal, and the auxiliary synchronization signal sequence is also used to represent the beam indication information by a sequence number;

the sending module 602 is specifically configured to: the secondary synchronization signal sequence is transmitted on the beam.

Optionally, as another embodiment, the processing module 601 is specifically configured to: determining a second secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device 600 to transmit the synchronization signal, where the second secondary synchronization signal sequence is different from a generator polynomial of a first secondary synchronization signal sequence in the synchronization signal, the second secondary synchronization signal sequence is used to represent the beam indication information by a sequence number, and the first secondary synchronization signal sequence is a secondary synchronization signal sequence that represents a cell identifier of a cell to which the synchronization signal belongs jointly with a primary synchronization signal sequence in the synchronization signal or is used to independently represent a cell identifier of a cell to which the synchronization signal belongs;

the sending module 602 is specifically configured to: and transmitting the secondary synchronization signal sequence formed by interleaving the first secondary synchronization signal sequence and the second secondary synchronization signal sequence in the frequency domain to the user equipment on the beam.

Optionally, as another embodiment, the processing module 601 is specifically configured to: determining at least one designated bit in broadcast information and a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device 600 to transmit the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and the at least one designated bit in the broadcast channel;

the sending module 602 is specifically configured to: transmitting the secondary synchronization signal sequence on the beam; the broadcast information is transmitted on a broadcast channel. .

Optionally, the beam indication information is used to indicate a subframe number and a symbol position in a time domain position of a beam used for transmitting the synchronization signal.

Fig. 7 is a schematic structural diagram of a user equipment 700 according to an embodiment of the present application. The user equipment 700 may include: a receiving module 702 and a processing module 703, wherein,

a receiving module 702, configured to receive beam indication information sent by a network side device, where the beam indication information is used for a time domain position of a beam used by the network side device to send a synchronization signal, and the network side device sends the synchronization signal through the beam;

the processing module 703 is configured to determine, according to the beam indication information, a time domain position of a beam used for sending the synchronization signal, and perform time domain synchronization with the network side device.

In the embodiment of the application, the time domain position of the beam for sending the synchronization signal is determined according to the beam indication information sent by the network side equipment, so that the synchronization between the user side and the network side is realized.

Optionally, the user equipment 700 may further include a detection module 701 for detecting the beam.

Optionally, as an embodiment, the receiving module 702 is specifically configured to: receiving an auxiliary synchronization signal sequence in a synchronization signal sent by the network side device on a detected beam, wherein the auxiliary synchronization signal sequence is used for jointly representing a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the auxiliary synchronization signal sequence is also used for representing the beam indication information through a sequence number;

the processing module 703 is specifically configured to: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the secondary synchronization signal sequence.

Optionally, as another embodiment, the receiving module 702 is specifically configured to: receiving an auxiliary synchronization signal sequence formed by interleaving a first auxiliary synchronization signal sequence and a second auxiliary synchronization signal sequence in a frequency domain on a detected beam, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of the first auxiliary synchronization signal sequence, the second auxiliary synchronization signal sequence is used for representing the beam indication information through a sequence number, the first auxiliary synchronization signal sequence is used for jointly representing an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence of the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs;

the processing module 703 is specifically configured to: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the second auxiliary synchronization signal sequence.

Further, in the embodiment of the present application, the first secondary synchronization signal sequence is formed by a sequence at an even position in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is formed by a sequence at an odd position in the secondary synchronization signal sequence; alternatively, the first secondary synchronization signal sequence is composed of a sequence at an odd number position in the secondary synchronization signal sequence, and the second secondary synchronization signal sequence is composed of a sequence at an even number position in the secondary synchronization signal sequence.

Optionally, as another embodiment, the receiving module 702 is specifically configured to: receiving a secondary synchronization signal sequence in the synchronization signal on the detected beam, and receiving broadcast information on a broadcast channel, wherein the secondary synchronization signal sequence is used for indicating a cell identifier of a cell to which the synchronization signal belongs in combination with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information by a sequence number of the secondary synchronization signal sequence and a value of at least one designated bit in the broadcast channel;

the processing module 703 is specifically configured to: and determining the time domain position of the beam for transmitting the synchronization signal according to the value of the at least one designated bit in the broadcast information and the sequence number of the secondary synchronization signal sequence.

Optionally, the beam indication information is used to indicate a subframe number and a symbol position of a time domain position of a beam used for transmitting the synchronization signal.

Fig. 8 is a schematic structural diagram of a network-side device 800 according to an embodiment of the present application. The network-side device 800 may include a processor 802, a transmitter 801, and a receiver 804. Optionally, a memory 803 is included. In particular applications, the transmitter 801 and receiver 804 may be coupled to an antenna 805.

The memory 803 stores programs. In particular, the program may include program code comprising computer operating instructions. The memory 803 may include both read-only memory and random-access memory, and provides instructions and data to the processor 802. The memory 803 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

A processor 802 configured to execute the following operations, optionally, the program stored in the memory 803, and specifically configured to execute the following operations:

determining beam indication information of a synchronization signal according to a time domain position of a beam used by network side equipment for sending the synchronization signal, wherein the beam indication information is used for indicating the time domain position, and the network side equipment sends the synchronization signal through the beam;

the beam indication information is transmitted by the transmitter 801.

The method described above and executed by the network side device or the base station in any of fig. 1 to 4 of the present application may be applied in the processor 802, or implemented by the processor 802. The processor 802 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 802. The Processor 802 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software 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 803, and the processor 802 reads the information in the memory 803 and performs the steps of the above method in combination with the hardware thereof.

Fig. 9 is a schematic structural diagram of a user equipment 900 according to an embodiment of the present application. User device 900 may include a processor 902, a transmitter 901, and a receiver 904. Optionally, a memory 903 is included. In particular applications, the transmitter 901 and the receiver 904 may be coupled to an antenna 905.

And a memory 903 for storing programs. In particular, the program may include program code comprising computer operating instructions. The memory 903 may include both read-only memory and random access memory, and provides instructions and data to the processor 902. The memory 903 may comprise high-speed RAM memory, and may also include non-volatile memory (non-volatile memory), such as at least one disk memory.

The processor 902 is configured to execute the following operations, optionally, to execute a program stored in the memory 903, and specifically to execute the following operations:

receiving beam indication information sent by network side equipment, wherein the beam indication information is used for a time domain position of a beam used by the network side equipment for sending a synchronization signal, and the network side equipment sends the synchronization signal through the beam;

and determining the time domain position of the beam for transmitting the synchronization signal according to the beam indication information, and performing time domain synchronization with the network side equipment.

The method described above as performed by the user equipment in any of the embodiments of fig. 2-5 of the present application may be implemented in the processor 902 or implemented by the processor 902. The processor 902 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 902. The Processor 902 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; but may also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software 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 903, and the processor 902 reads the information in the memory 903 and performs the steps of the above method in combination with the hardware thereof.

Embodiments of the present application also provide a computer-readable storage medium storing one or more programs, the one or more programs comprising instructions, which when executed by a portable electronic device comprising a plurality of application programs, enable the portable electronic device to perform the method of the embodiment shown in fig. 1.

Another computer-readable storage medium is provided in an embodiment of the present application, which stores one or more programs, where the one or more programs include instructions, which when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the embodiment shown in fig. 5.

The embodiment of the application also provides a communication system, which can comprise network side equipment and user equipment. The network side device may be the network side device 600 in the embodiment shown in fig. 6 or the network side device 800 in the embodiment shown in fig. 8, and the user equipment may be the user equipment 700 in the embodiment shown in fig. 7 or the user equipment 900 in the embodiment shown in fig. 9.

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 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 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 or a part thereof, which essentially contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network side 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: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

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 method of synchronization, comprising:

determining beam indication information of a synchronization signal according to a time domain position of a beam used by a network side device for transmitting the synchronization signal, wherein the beam indication information is used for indicating the time domain position, and the network side device transmits the synchronization signal through the beam;

transmitting the beam indication information;

wherein, the determining the beam indication information of the synchronization signal according to the time domain position of the beam used by the network side device to transmit the synchronization signal includes:

determining a second auxiliary synchronization signal sequence in the synchronization signal according to the time domain position of the beam used by the network side equipment for transmitting the synchronization signal, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of a first auxiliary synchronization signal sequence in the synchronization signal,

the second secondary synchronization signal sequence is used to represent the beam indication information, and is represented by a polynomial x (n +5) ═ x (n +4) + x (n +1) + x (n), where x (0) ═ 0, x (1) ═ 0, x (2) ═ 0, x (3) ═ 0, and x (4) ═ 1;

the first secondary synchronization signal sequence is used for jointly representing a secondary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal, or the first secondary synchronization signal sequence is used for independently representing the cell identifier of the cell to which the synchronization signal belongs;

wherein the transmitting the beam indication information comprises: and transmitting the auxiliary synchronization signal sequence formed by interweaving the first auxiliary synchronization signal sequence and the second auxiliary synchronization signal sequence in the frequency domain to user equipment on the beam.

2. The method of claim 1,

the determining the beam indication information of the synchronization signal according to the time domain position of the beam used by the network side device to send the synchronization signal includes: determining a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device to send the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for representing the beam indication information by a sequence number;

wherein the transmitting the beam indication information comprises: transmitting the secondary synchronization signal sequence on the beam.

3. The method of claim 2,

when the secondary synchronization signal sequence is used for jointly representing a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulus of a sequence number of the secondary synchronization signal sequence to M1 and the primary synchronization signal sequence, the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1, wherein M1 is the total number of cells which can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by the total number of the primary synchronization signal sequence; or

When the secondary synchronization signal sequence is used to independently represent the cell identifier of the cell to which the synchronization signal belongs, the cell identifier of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 by the sequence number of the secondary synchronization signal sequence, and the beam indication information in the cell to which the synchronization signal belongs is represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2, where M2 is the total number of cells that can be represented by the secondary synchronization signal sequence.

4. The method of claim 1,

the first auxiliary synchronization signal sequence is formed by sequences at even positions in the auxiliary synchronization signal sequence, and the second auxiliary synchronization signal sequence is formed by sequences at odd positions in the auxiliary synchronization signal sequence; or

The first auxiliary synchronization signal sequence is composed of sequences at odd-numbered positions in the auxiliary synchronization signal sequence, and the second auxiliary synchronization signal sequence is composed of sequences at even-numbered positions in the auxiliary synchronization signal sequence.

5. The method of claim 1,

the determining the beam indication information of the synchronization signal according to the time domain position of the beam used by the network side device to send the synchronization signal includes: determining at least one designated bit in broadcast information and a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side equipment for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and the at least one designated bit in a broadcast channel;

wherein the transmitting the beam indication information comprises: transmitting the secondary synchronization signal sequence on the beam; the broadcast information is transmitted on a broadcast channel.

6. The method of claim 5,

when the secondary synchronization signal sequence is used for jointly representing the cell identity of the cell to which the synchronization signal belongs with the primary synchronization signal sequence in the synchronization signal, the cell identity of the cell to which the synchronization signal belongs is represented by a value obtained by modulus of a sequence number of the secondary synchronization signal sequence to M1 and the primary synchronization signal sequence, the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M1 and a value of the at least one designated bit in the broadcast channel, wherein M1 is the total number of cells that can be represented by the secondary synchronization signal sequence and the primary synchronization signal sequence divided by the total number of the primary synchronization signal sequences; or

When the secondary synchronization signal sequence is used for independently representing the cell identity of the cell to which the synchronization signal belongs, the cell identity of the cell to which the synchronization signal belongs is represented by a value obtained by modulo M2 by a sequence number of the secondary synchronization signal sequence, and the beam indication information of the cell to which the synchronization signal belongs is jointly represented by a value obtained by dividing the sequence number of the secondary synchronization signal sequence by M2 and a value of the at least one designated bit in the broadcast channel, wherein M2 is the total number of cells which can be represented by the secondary synchronization signal sequence.

7. The method of any one of claims 1-6,

the beam indication information is used to indicate a subframe number and a symbol position in a time domain position of a beam used to transmit the synchronization signal.

8. A method of synchronization, comprising:

receiving beam indication information sent by a network side device, wherein the beam indication information is used for a time domain position of a beam used by the network side device for sending a synchronization signal, and the network side device sends the synchronization signal through the beam;

determining a time domain position of a beam for sending the synchronization signal according to the beam indication information, and performing time domain synchronization with the network side equipment;

the receiving of the beam indication information sent by the network side device includes: receiving a secondary synchronization signal sequence formed by interleaving a first secondary synchronization signal sequence and a second secondary synchronization signal sequence in a frequency domain on a detected beam, wherein the second secondary synchronization signal sequence is different from a generator polynomial of the first secondary synchronization signal sequence, the second secondary synchronization signal sequence is used for representing the beam indication information by a sequence number, and the second secondary synchronization signal sequence is represented by a polynomial x (n +5) ═ x (n +4) + x (n +1) + x (n), where x (0) ═ 0, x (1) ═ 0, x (2) ═ 0, x (3) ═ 0, and x (4) < 1; the first secondary synchronization signal sequence is used for jointly representing a secondary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence of the synchronization signal or independently representing the cell identifier of the cell to which the synchronization signal belongs; wherein the determining, according to the beam indication information, a time domain position of a beam used for transmitting the synchronization signal includes: and determining the time domain position of the beam for sending the synchronous signal according to the sequence number of the second auxiliary synchronous signal sequence.

9. The method of claim 8,

before the receiving the beam indication information sent by the network side device, the method further includes: detecting a beam;

the receiving of the beam indication information sent by the network side device includes: receiving a secondary synchronization signal sequence in a synchronization signal sent by the network side device on a detected beam, where the secondary synchronization signal sequence is used to jointly represent a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or the secondary synchronization signal sequence is used to independently represent a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used to represent the beam indication information by a sequence number; wherein the determining, according to the beam indication information, a time domain position of a beam used for transmitting the synchronization signal includes: determining the time domain position of a wave beam for transmitting the synchronous signal according to the sequence number of the auxiliary synchronous signal sequence; or

The receiving of the beam indication information sent by the network side device includes: receiving a secondary synchronization signal sequence in the synchronization signal on the detected beam, and receiving broadcast information on a broadcast channel, wherein the secondary synchronization signal sequence is used for indicating a cell identifier of a cell to which the synchronization signal belongs in combination with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and a value of at least one designated bit in the broadcast channel; wherein, according to the beam indication information, the determining the time domain position of the beam for transmitting the synchronization signal comprises: and determining the time domain position of the beam for transmitting the synchronous signal according to the value of the at least one designated bit in the broadcast information and the sequence number of the secondary synchronous signal sequence.

10. The method of claim 8 or 9,

the beam indication information is used for indicating the subframe number and the symbol position of the time domain position of the beam used for transmitting the synchronization signal.

11. A network-side device, comprising:

a processing module, configured to determine beam indication information of a synchronization signal according to a time domain position of a beam used by a network side device to send the synchronization signal, where the beam indication information is used to indicate the time domain position, and the network side device sends the synchronization signal through the beam;

the processing module is specifically configured to determine a second auxiliary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device to transmit the synchronization signal, where the second auxiliary synchronization signal sequence is different from a generator polynomial of a first auxiliary synchronization signal sequence in the synchronization signal,

a sending module, configured to send the beam indication information, where the sending module is specifically configured to send, to a user equipment on the beam, an auxiliary synchronization signal sequence formed by interleaving the first auxiliary synchronization signal sequence and the second auxiliary synchronization signal sequence in the frequency domain.

12. The network-side device of claim 11,

the processing module is specifically configured to: determining a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side device to send the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for representing the beam indication information by a sequence number;

wherein the sending module is specifically configured to: transmitting the secondary synchronization signal sequence on the beam.

13. The network-side device of claim 11,

the processing module is specifically configured to: and determining a second auxiliary synchronization signal sequence in the synchronization signal according to the time domain position of a beam used by the network side equipment for transmitting the synchronization signal, wherein the second auxiliary synchronization signal sequence is different from a generator polynomial of a first auxiliary synchronization signal sequence in the synchronization signal, the second auxiliary synchronization signal sequence is used for representing the beam indication information, and the first auxiliary synchronization signal sequence is used for jointly representing an auxiliary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a main synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs.

14. The network-side device of claim 11,

the processing module is specifically configured to: determining at least one designated bit in broadcast information and a secondary synchronization signal sequence in the synchronization signal according to a time domain position of a beam used by the network side equipment for transmitting the synchronization signal and a cell to which the synchronization signal belongs, wherein the secondary synchronization signal sequence is used for jointly representing a cell identifier of the cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of the cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and the at least one designated bit in a broadcast channel;

wherein the sending module is specifically configured to: transmitting the secondary synchronization signal sequence on the beam; the broadcast information is transmitted on a broadcast channel.

15. A user device, comprising:

a receiving module, configured to receive beam indication information sent by a network side device, where the beam indication information is used for a time domain position of a beam used by the network side device to send a synchronization signal, and the network side device sends the synchronization signal through the beam;

the receiving module is specifically configured to: receiving a secondary synchronization signal sequence formed by interleaving a first secondary synchronization signal sequence and a second secondary synchronization signal sequence in a frequency domain on a detected beam, wherein the second secondary synchronization signal sequence is different from a generator polynomial of the first secondary synchronization signal sequence, the second secondary synchronization signal sequence is used for representing the beam indication information by a sequence number, and the second secondary synchronization signal sequence is represented by a polynomial x (n +5) ═ x (n +4) + x (n +1) + x (n), where x (0) ═ 0, x (1) ═ 0, x (2) ═ 0, x (3) ═ 0, and x (4) < 1; the first secondary synchronization signal sequence is used for jointly representing a secondary synchronization signal sequence of a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence of the synchronization signal or independently representing the cell identifier of the cell to which the synchronization signal belongs;

the processing module is used for determining the time domain position of the beam for sending the synchronization signal according to the beam indication information and performing time domain synchronization with the network side equipment; wherein the processing module is specifically configured to: and determining the time domain position of the beam for transmitting the synchronization signal according to the sequence number of the second auxiliary synchronization signal sequence.

16. The user equipment of claim 15, wherein the user equipment further comprises a detection module to detect a beam;

the receiving module is specifically configured to: receiving a secondary synchronization signal sequence in a synchronization signal sent by the network side device on a detected beam, where the secondary synchronization signal sequence is used to jointly represent a cell identifier of a cell to which the synchronization signal belongs with a primary synchronization signal sequence in the synchronization signal or the secondary synchronization signal sequence is used to independently represent a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used to represent the beam indication information by a sequence number; wherein the processing module is specifically configured to: determining the time domain position of a wave beam for transmitting the synchronous signal according to the sequence number of the auxiliary synchronous signal sequence; or

The receiving module is specifically configured to: receiving a secondary synchronization signal sequence in the synchronization signal on the detected beam, and receiving broadcast information on a broadcast channel, wherein the secondary synchronization signal sequence is used for indicating a cell identifier of a cell to which the synchronization signal belongs in combination with a primary synchronization signal sequence in the synchronization signal or independently representing a cell identifier of a cell to which the synchronization signal belongs, and the secondary synchronization signal sequence is further used for jointly representing the beam indication information through a sequence number of the secondary synchronization signal sequence and a value of at least one designated bit in the broadcast channel;

wherein the processing module is specifically configured to: and determining the time domain position of the beam for transmitting the synchronous signal according to the value of the at least one designated bit in the broadcast information and the sequence number of the secondary synchronous signal sequence.

17. A communication system, comprising:

the network-side device of any one of claims 11-14; and

the user equipment of claim 15 or 16.