CN107682133B

CN107682133B - Method and device for generating discovery reference signal and network side equipment

Info

Publication number: CN107682133B
Application number: CN201710854823.4A
Authority: CN
Inventors: 李明菊; 张云飞
Original assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Current assignee: Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
Priority date: 2017-09-20
Filing date: 2017-09-20
Publication date: 2020-08-14
Anticipated expiration: 2037-09-20
Also published as: CN107682133A

Abstract

The embodiment of the application discloses a method, a device and a network side device for generating a discovery reference signal, wherein the method comprises the following steps: acquiring carrier frequency and subcarrier interval for bearing target discovery reference signals; determining the maximum number of SS blocks of synchronization signals contained in the target discovery reference signal according to the carrier frequency, and determining continuous information among the SS blocks contained in the target discovery reference signal according to the subcarrier interval; generating the target discovery reference signal according to a maximum number of SS blocks included in the target discovery reference signal and continuity information between the SS blocks included in the target discovery reference signal. By using the embodiment of the application, the target discovery reference signal can be constructed through the maximum number of SS blocks which can be contained in the target discovery reference signal and the continuous information between the SS blocks, so that the terminal equipment can access to the corresponding cell to improve the throughput.

Description

Method and device for generating discovery reference signal and network side equipment

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for generating a discovery reference signal, and a network device.

Background

With the continuous development of terminal technology and communication technology, especially mobile terminals and current high-speed communication networks, have become important components in people's lives. The resulting increase in communication traffic makes 3GPP (3rd generation Partnership Project) licensed spectrum appear to be less and less adequate to provide higher network capacity. In order to further improve the utilization of spectrum resources, how to use the unlicensed spectrum with the help of the licensed spectrum becomes an important issue to be solved urgently.

In LTE (long term evolution ) assisted access technology, that is, a mechanism of using LTE for unlicensed spectrum, a Discovery Reference Signal (DRS) thereof includes a primary Synchronization Signal (pss), a secondary Synchronization Signal (sss), a cell specific Reference Signal (CRS), and an optional CSI-RS (Channel state Information-Reference Signal), which occupy 12 continuous symbols. However, in New Radio technology (NR), in order to reduce CRS of always on, CRS is removed, so that it is a problem to be solved to find out which signals are contained in the reference signal. Therefore, the discovery reference signal in LTE cannot be directly used in the new radio technology NR, and how to design the discovery reference signal in NR is a problem to be solved, which enables the ue to discover a cell of a corresponding unlicensed spectrum, so that the ue accesses the cell to improve throughput.

Disclosure of Invention

An object of the embodiments of the present application is to provide a method and an apparatus for generating a discovery reference signal, and a network side device, which generate a discovery reference signal in NR, so that a user side device can discover a cell of a corresponding unlicensed spectrum, and thereby the terminal device accesses the cell to improve throughput.

In order to solve the above technical problem, the embodiment of the present application is implemented as follows:

the embodiment of the application provides a method for generating a discovery reference signal, which comprises the following steps:

acquiring carrier frequency and subcarrier interval for bearing target discovery reference signals;

determining the maximum number of SS blocks of synchronization signals contained in the target discovery reference signal according to the carrier frequency, and determining continuous information among the SS blocks contained in the target discovery reference signal according to the subcarrier interval;

generating the target discovery reference signal according to a maximum number of SS blocks included in the target discovery reference signal and continuity information between the SS blocks included in the target discovery reference signal.

Optionally, the SS block includes one primary synchronization signal PSS symbol, one secondary synchronization signal SSs symbol, and multiple physical broadcast channel PBCH symbols, where the PBCH carries a demodulation reference signal DMRS;

and the PBCH symbol is taken as an end symbol in the SS block, and the PSS symbol and the SSS symbol occupy two non-adjacent symbol bits.

Optionally, the determining the maximum number of SS blocks contained in the target discovery reference signal according to the carrier frequency includes:

searching the maximum number of SS blocks corresponding to the carrier frequency of the target discovery reference signal from the pre-stored correspondence between the carrier frequency and the maximum number of SS blocks;

and taking the maximum number of the searched SS blocks as the maximum number of the SS blocks contained in the target discovery reference signal.

Optionally, the determining, according to the subcarrier spacing, consecutive information between SS blocks included in the target discovery reference signal includes:

searching continuous information between SS blocks corresponding to the subcarrier intervals of the target discovery reference signals from the corresponding relationship of the continuous information between prestored subcarrier intervals and SS blocks;

and using the searched continuous information among the SS blocks as the continuous information among the SS blocks contained in the target discovery reference signal.

Optionally, the correspondence of the pre-stored carrier frequency to the maximum number of SS blocks at least includes:

if the carrier frequency is less than 3GHz, the maximum number of SS blocks is 4;

if the carrier frequency is greater than or equal to 3GHz and less than 6GHz, the maximum number of SS blocks is 8;

if the carrier frequency is greater than or equal to 6GHz and less than or equal to 52.6GHz, the maximum number of SS blocks is 64.

Optionally, the correspondence between the pre-stored subcarrier spacing and the consecutive information between SS blocks at least includes:

if the subcarrier interval is 15KHz, the continuous information among the SS blocks is discontinuous among the SS blocks, and 2 SS blocks exist in each continuous 14 symbols;

if the subcarrier spacing is 30KHz, the continuous information between SS blocks is that the SS blocks are discontinuous, or 2 continuous SS blocks exist in each continuous 14 symbols, and the SS blocks between each continuous 14 symbols are discontinuous;

if the subcarrier spacing is 120KHz, the continuous information between SS blocks is that 2 continuous SS blocks exist in each continuous 14 symbols, and the SS blocks between each continuous 14 symbols are not continuous;

if the subcarrier spacing is 240KHz, the consecutive information between SS blocks is that there are 4 consecutive SS blocks within each consecutive 28 symbols, and the SS blocks between each consecutive 28 symbols are not consecutive.

Optionally, the generating the target discovery reference signal according to the maximum number of SS blocks included in the target discovery reference signal and consecutive information between SS blocks included in the target discovery reference signal includes:

determining a target maximum number of SS blocks that can be included in the target discovery reference signal according to a maximum number of SS blocks included in the target discovery reference signal and continuity information between SS blocks included in the target discovery reference signal, if it is determined that only consecutive SS blocks are included in the target discovery reference signal according to continuity information between SS blocks included in the target discovery reference signal;

generating the target discovery reference signal based on the target maximum number.

generating the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal.

Optionally, the generating the target discovery reference signal based on the maximum number of SS blocks contained in the target discovery reference signal comprises:

determining a number of SS blocks required to generate the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal;

setting the corresponding SS block according to the determined number, and supplementing a predetermined symbol with a symbol bit between two adjacent and discontinuous SS blocks to generate the target discovery reference signal.

Optionally, the predetermined symbols comprise a combination of one or more of: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in the PBCH, and a channel state information reference signal (CSI-RS) symbol.

The device for generating discovery reference signals provided by the embodiment of the application comprises:

the frequency acquisition module is used for acquiring carrier frequency and subcarrier interval of a bearing target discovery reference signal;

an information determining module, configured to determine a maximum number of SS blocks of a synchronization signal included in the target discovery reference signal according to the carrier frequency, and determine continuous information between SS blocks included in the target discovery reference signal according to the subcarrier interval;

a signal generating module, configured to generate the target discovery reference signal according to consecutive information between a maximum number of SS blocks included in the target discovery reference signal and SS blocks included in the target discovery reference signal.

Optionally, the information determining module includes:

a first search unit, configured to search for a maximum number of SS blocks corresponding to a carrier frequency of the target discovery reference signal from a pre-stored correspondence between carrier frequencies and the maximum number of SS blocks;

a first information determining unit, configured to use the maximum number of found SS blocks as the maximum number of SS blocks included in the target discovery reference signal.

Optionally, the information determining module includes:

a second searching unit, configured to search, from a correspondence relationship between prestored subcarrier intervals and consecutive information between SS blocks, consecutive information between SS blocks corresponding to the subcarrier intervals of the target discovery reference signal;

a second information determining unit, configured to use the found consecutive information between the SS blocks as consecutive information between SS blocks included in the target discovery reference signal.

Optionally, the signal generating module includes:

a target number determination unit for determining a target maximum number of SS blocks that can be contained in the target discovery reference signal according to a maximum number of SS blocks contained in the target discovery reference signal and consecutive information between SS blocks contained in the target discovery reference signal, if it is determined that only consecutive SS blocks are contained in the target discovery reference signal according to the consecutive information between SS blocks contained in the target discovery reference signal;

a first signal generation unit to generate the target discovery reference signal based on the target maximum number.

Optionally, the signal generating module is configured to generate the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal.

Optionally, the signal generating module includes:

a number determination unit for determining the number of SS blocks required to generate the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal;

and a second signal generating unit for setting the corresponding SS blocks according to the determined number and supplementing a predetermined symbol to a sign bit between two adjacent and discontinuous SS blocks to generate the target discovery reference signal.

The embodiment of the present application provides a network side device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method for generating a discovery reference signal as provided in the above embodiments.

As can be seen from the above technical solutions provided by the embodiments of the present application, in the embodiments of the present application, the maximum number of SS blocks included in the target discovery reference signal is determined by the obtained carrier frequency carrying the target discovery reference signal, and the consecutive information between the SS blocks included in the target discovery reference signal is determined according to the obtained subcarrier interval carrying the target discovery reference signal, and then the target discovery reference signal is generated according to the maximum number of SS blocks included in the target discovery reference signal and the consecutive information between the SS blocks included in the target discovery reference signal, so that the number of SS blocks included in the target discovery reference signal can be determined by the maximum number of SS blocks that can be included in the target discovery reference signal and the consecutive information between the SS blocks, and the corresponding target discovery reference signal is constructed based on the number of SS blocks, so that the user-side device can discover the corresponding unlicensed spectrum cell by the generated target discovery reference signal, thereby enabling the terminal device to access the cell to improve throughput.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 is a flowchart of a method for generating a discovery reference signal according to the present application;

fig. 2 is a schematic structural diagram of a system for generating and transmitting a discovery reference signal according to the present application;

fig. 3 is a flow chart of another method for generating a discovery reference signal according to the present application;

fig. 4 is a schematic structural diagram of a discovery reference signal generation apparatus according to the present application;

fig. 5 is a schematic structural diagram of a network-side device according to the present application.

Detailed Description

The embodiment of the application provides a method and a device for generating a discovery reference signal and network side equipment.

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part 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 application can be applied to various communication systems, such as: GSM (Global System for mobile communications), CDMA (Code Division Multiple Access) System, WCDMA (Wideband Code Division Multiple Access), GPRS (General Packet Radio Service), LTE (Long term evolution), and the like.

An electronic device (UE), also known as a Mobile Terminal (Mobile Terminal), an access Terminal, a subscriber unit, a subscriber station, a Mobile station, a remote Terminal, a Mobile device, a User Terminal, a wireless communication device, a User agent, or a User Equipment. The access terminal may be a cellular phone, a cordless phone, a SIP (session initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with Wireless communication capability, a computing device or other processing device connected to a Wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future evolved PLMN (Public Land Mobile Network) Network.

The Network device may be a device for communicating with a Mobile device, and the Network device may be a Base Transceiver Station (BTS) in GSM (global system for Mobile communications) or CDMA (Code Division Multiple Access), an NB (NodeB, Base Station) in WCDMA (wideband Code Division Multiple Access), an eNB or eNodeB (evolved Node B) or Access point in LTE (Long Term Evolution), or a vehicle-mounted device, a wearable device, a Network side device in a future 5G Network, or a Network device in a future evolved PLMN (Public Land Mobile Network) Network.

The system adapted by the present application may be a system aggregated by FDD (Frequency Division Duplex), TDD (Time Division Duplex), or FDD and TDD, or a system of frame structure type3 for unlicensed spectrum usage, which is not limited in the present application.

Example one

As shown in fig. 1, the present application provides a method for generating a discovery reference signal, which may be used to generate or design a discovery reference signal to meet corresponding communication requirements. The execution subject of the method may be any network side device, such as a base station, an MME (mobile Management Entity), and the like. The method may specifically comprise the steps of:

in step S102, a carrier frequency and a subcarrier spacing carrying a target discovery reference signal are acquired.

The target Discovery reference Signal may be any Discovery Reference Signal (DRS), and the Discovery reference Signal may be used for RRM (Radio Resource Management) measurement based on the Discovery reference Signal performed by the ue in a specified time period, where the Discovery reference Signal in this embodiment includes consecutive symbols, but the number of the symbols included in the Discovery reference Signal is not necessarily 12. The carrier frequency may be a frequency of a carrier that carries the discovery reference signal, specifically, such as 3GHz or 6GHz, and in practical application, the carrier frequency may be set according to an actual situation, which is not limited in this embodiment of the present application. The subcarrier spacing may be a spacing size between subcarriers carrying the discovery reference signal, i.e., subcarrier spacing, specifically, 15KHz or 30 KHz.

In implementation, in LTE-assisted access technology, each subframe contains 14 symbols, and each subframe is 1ms in length. The DMTC time period is a time interval of a certain length, for example: the length of the DMTC period may be 6ms, the DMTC period may occur periodically, the period of the occurrence may be 40ms, 60ms, or 80ms, a plurality of discovery reference signal transmittable positions are configured in each DMTC period, and the transmittable positions of the discovery reference signals in each DMTC period may be different. In the case of using the LTE mechanism for the unlicensed spectrum, the discovery reference signals thereof will typically contain PSS, SSS, CRS, and optional CSI-RS, etc., and the discovery reference signals will occupy 12 consecutive symbols within one subframe.

With the development of New wireless technologies (i.e., New Radio, NR), such as 5G-based wireless technologies, New wireless communication technologies will face higher requirements, and in the New wireless technologies, in order to reduce CRS of always on, CRS may be removed, so that the discovery reference signal in LTE cannot be directly used in the New wireless technologies, for this reason, the embodiment of the present invention provides a design manner of the discovery reference signal, which may specifically include the following: when a certain discovery reference signal (i.e., a target reference signal) needs to be sent, the carrier wave that will carry the target discovery reference signal and the relevant information of each subcarrier can be determined, the frequency of the carrier wave can be obtained from the determined relevant information of the carrier wave, and the size of the subcarrier interval is obtained, so that the carrier frequency and the subcarrier interval that carry the target discovery reference signal are obtained respectively.

In step S104, the maximum number of SS blocks of the synchronization signal included in the target discovery reference signal is determined according to the carrier frequency, and the consecutive information between SS blocks included in the target discovery reference signal is determined according to the interval of the subcarriers.

Here, SS (Synchronization Signal) blocks (i.e., SS blocks) may be main components of discovery reference signals in a new wireless technology, each discovery reference Signal may include one or more SS blocks, and each SS block may include PSS, SSs, and PBCH (where the PBCH further includes DMRS), and the like. The consecutive information between the SS blocks may include consecutive or non-consecutive, the consecutive SS blocks may be two SS blocks arranged adjacently, that is, a symbol without a non-SS block exists between the two SS blocks, the non-consecutive SS blocks may be an interval symbol with a non-SS block between the two SS blocks, that is, a symbol which blocks the two SS blocks exists between the two SS blocks, and the like.

In implementation, since the frequency size of a carrier determines the number of information or signals that can be carried by the carrier, the number of information or signals that can be carried by the carrier may be determined by the carrier frequency that is to carry the target discovery reference signal, and for this reason, after the carrier frequency carrying the target discovery reference signal is obtained through the processing of step S102, the maximum number of SS blocks included in the target discovery reference signal that can be carried may be obtained according to the obtained carrier frequency. For example, if the carrier frequency is less than 3GHz, the maximum number of SS blocks is 4, and for example, if the carrier frequency is greater than or equal to 3GHz and less than 6GHz, the maximum number of SS blocks is 8, and so on.

Meanwhile, considering whether the SS blocks are continuous or not, the number of SS blocks included in the target discovery reference signal may also be affected, and the continuity condition or continuity information between the SS blocks may be determined by the size of the subcarrier interval carrying the target discovery reference signal, so the continuity information between the SS blocks included in the target discovery reference signal may be determined based on the size of the subcarrier interval carrying the target discovery reference signal, specifically, the corresponding continuity information or continuity condition may be set for different subcarrier intervals according to the actual situation, for example, if the subcarrier interval is 15KHz, the SS blocks are discontinuous, and there are two SS blocks in every 14 symbols, the first SS block may occupy 2 to 5 symbol bits, and the second SS block may occupy 8 to 11 symbol bits; as another example, if the subcarrier spacing is 30KHz, the SS block distribution may have two cases: one of the cases can be the same as the case where the subcarrier spacing is 15KHz, namely, there is no discontinuity between every two SS blocks; another case may be a continuum between SS blocks, i.e., between two SS blocks within each 14 symbols, etc. The processing of the continuous information between SS blocks included in the target discovery reference signal may include various processing manners, in addition to the two exemplary processing provided above, and may be specifically set or adjusted according to actual situations, which is not limited in this embodiment of the present application.

In step S106, a target discovery reference signal is generated based on the maximum number of SS blocks contained in the target discovery reference signal and the consecutive information between the SS blocks contained in the target discovery reference signal.

In implementation, the maximum number of SS blocks included in the target discovery reference signal and the continuity information between the SS blocks included in the target discovery reference signal may be considered comprehensively, the number of SS blocks included in the target discovery reference signal may be adjusted continuously, and whether the SS blocks included in the target discovery reference signal are continuous or not may be determined, and finally, the discovery reference signal satisfying all the above conditions (i.e., the maximum number of SS blocks included in the target discovery reference signal and the continuity information between the SS blocks included in the target discovery reference signal) may be obtained as the target discovery reference signal.

As shown in fig. 2, after obtaining the target discovery reference signal, the network side device (e.g., a base station, etc.) may send the target discovery reference signal when the detection channel is idle, so that when it is ensured that the mobile terminal of the user (i.e., the user side device) moves into the coverage of the cell corresponding to the network side device, the terminal device of the user can receive the target discovery reference signal to discover the cell of the corresponding unlicensed spectrum, thereby enabling the terminal device to access the cell to improve throughput.

The embodiment of the application provides a method for generating a discovery reference signal, which determines the maximum number of SS blocks contained in a target discovery reference signal through an acquired carrier frequency carrying the target discovery reference signal, determines continuous information among the SS blocks contained in the target discovery reference signal according to the acquired subcarrier interval size carrying the target discovery reference signal, and further generates the target discovery reference signal according to the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks contained in the target discovery reference signal, so that the number of SS blocks contained in the target discovery reference signal can be determined through the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks, and the corresponding target discovery reference signal is constructed based on the number of SS blocks, thereby enabling a user-side device to discover a corresponding unlicensed spectrum cell through the generated target discovery reference signal, thereby enabling the terminal device to access the cell to improve throughput.

Example two

Fig. 3 is a further method for generating a discovery reference signal according to an embodiment of the present application, which may be used to generate or design a discovery reference signal to meet corresponding communication requirements. The execution subject of the method can be any network side device, such as a base station, an MME, and the like. The method may specifically comprise the steps of:

in step S302, a carrier frequency and a subcarrier spacing for carrying a target discovery reference signal are obtained.

The content of the step S302 is the same as the content of the step S102 in the first embodiment, and the specific processing procedure of the step S302 may refer to the processing procedure of the step S102, which is not described herein again.

The carrier frequency and the subcarrier spacing size for carrying the target discovery reference signal can be obtained through the processing of step S302, and the target discovery reference signal can be constructed through the carrier frequency and the subcarrier spacing size for carrying the target discovery reference signal, which may specifically include steps S304-S306, and steps S308-S310.

In step S304, the maximum number of SS blocks corresponding to the carrier frequency of the target discovery reference signal is searched for from the correspondence relationship between the carrier frequency and the maximum number of SS blocks stored in advance.

In implementation, the composition structure of the SS block may be various, and may be specifically set according to an actual situation, and the manner of providing the optional composition structure of the SS block in the embodiment of the present application may specifically include the following: the SS block may include a primary synchronization signal PSS (i.e., one primary synchronization signal PSS symbol) occupying one symbol bit, a secondary synchronization signal SSs (i.e., one secondary synchronization signal SSs symbol) occupying one symbol bit, and a physical broadcast channel PBCH (i.e., multiple physical broadcast channel PBCH symbols) occupying multiple symbol bits, where the PBCH carries a demodulation reference signal DMRS. The number of the physical broadcast channel PBCH symbols can be set according to the actual situation, and the number of the physical broadcast channel PBCH symbols in the embodiment of the application can be 2-4. The processing method for constructing the SS block may include multiple implementation methods, and based on the foregoing, the following provides an optional implementation method, which may specifically include the following: the PBCH symbol is used as an end symbol in the SS block, and the PSS symbol and the SSS symbol occupy two non-adjacent symbol bits.

Specifically, if the number of PBCH symbols of the physical broadcast channel is 2, the SS block should include 4 consecutive symbols, which are, in order, a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol, i.e., a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol. If the number of PBCH symbols of the physical broadcast channel is 3, the SS block should include 5 consecutive symbols, where the 5 symbols are, in order, a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol, or the PBCH symbol, the PSS symbol, the PBCH symbol, the SSs symbol, and the PBCH symbol, i.e., the PSS symbol, the PBCH symbol, the SSs symbol, the PBCH symbol, or the PBCH symbol, the PSS symbol, the PBCH symbol, the SSs symbol, and the PBCH symbol. If the number of PBCH symbols of the physical broadcast channel is 4, the SS block should include 6 consecutive symbols, where the 6 symbols are, in order, a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol, or a PBCH symbol, a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol, that is, a PSS symbol, a PBCH symbol, a SSs symbol, a PBCH symbol, a PSS symbol, a PBCH symbol, a SSs symbol, and a PBCH symbol, or a PBCH symbol, a PSS symbol, a PBCH symbol, a SSs symbol, a pb. The SS blocks constituting the discovery reference signal can be obtained in the above manner.

In this embodiment of the present application, the setting manner of the pre-stored correspondence between the carrier frequency and the maximum number of SS blocks may include multiple implementation manners, and may specifically perform corresponding setting or adjustment according to an actual situation, and the following provides an optional implementation manner, and specifically may include the following: if the carrier frequency is less than 3GHz, the maximum number of SS blocks is 4; if the carrier frequency is greater than or equal to 3GHz and less than 6GHz, the maximum number of SS blocks is 8; if the carrier frequency is greater than or equal to 6GHz and less than or equal to 52.6GHz, the maximum number of SS blocks is 64, and the correspondence can be seen in table 1 below.

TABLE 1

In the correspondence relationship in table 1, the maximum number of SS blocks corresponding to different carrier frequencies may be different.

After the carrier frequency carrying the target discovery reference signal is obtained through the processing in step S302, the obtained carrier frequency carrying the target discovery reference signal may be compared with the carrier frequencies in the corresponding relationship in table 1, and a carrier frequency interval where the carrier frequency carrying the target discovery reference signal is located is determined, for example, if the carrier frequency carrying the target discovery reference signal is 4GHz, the carrier frequency carrying the target discovery reference signal is located in a carrier frequency interval "greater than or equal to 3GHz and less than 6 GHz" in table 1. Then, the maximum number of SS blocks corresponding to the determined carrier frequency interval, that is, the maximum number of SS blocks corresponding to the carrier frequency interval "greater than or equal to 3GHz and less than 6 GHz" in table 1 may be obtained as 8.

In step S306, the maximum number of found SS blocks is taken as the maximum number of SS blocks included in the target discovery reference signal.

In step S308, the correspondence between the subcarrier intervals of the target discovery reference signal and the SS blocks is searched for the continuity information between SS blocks corresponding to the subcarrier intervals, from among the correspondence between the subcarrier intervals and the continuity information between SS blocks stored in advance.

In implementation, the setting manner of the correspondence between the pre-stored subcarrier spacing and the consecutive information between the SS blocks in this embodiment may include multiple implementation manners, and may specifically perform corresponding setting or adjustment according to an actual situation, and the following provides an optional implementation manner, and specifically may include the following: if the interval of the sub-carriers carrying the target finding reference signal is 15KHz, the continuous information among the SS blocks is discontinuous among the SS blocks, and 2 SS blocks exist in each continuous 14 symbols; if the subcarrier spacing size carrying the target finding reference signal is 30KHz, the continuous information between the SS blocks is that the SS blocks are discontinuous, or 2 continuous SS blocks exist in each continuous 14 symbols, and the SS blocks between each continuous 14 symbols are discontinuous; if the subcarrier interval for carrying the target finding reference signal is 120KHz, the continuous information among the SS blocks is that 2 continuous SS blocks exist in each continuous 14 symbols, and the SS blocks among each continuous 14 symbols are not continuous; if the subcarrier spacing carrying the target discovery reference signal is 240KHz, the continuity information between SS blocks is that there are 4 consecutive SS blocks within each consecutive 28 symbols, and the SS blocks between each consecutive 28 symbols are not continuous. The correspondence relationship can be seen in table 2 below.

TABLE 2

In the correspondence relationship in table 2, the consecutive information between SS blocks corresponding to different subcarrier intervals may be different.

After the subcarrier spacing carrying the target discovery reference signal is obtained through the processing in step S302, the obtained subcarrier spacing carrying the target discovery reference signal may be compared with the subcarrier spacing in the corresponding relationship in table 2, and the subcarrier spacing corresponding to the subcarrier spacing carrying the target discovery reference signal is determined, for example, if the subcarrier spacing carrying the target discovery reference signal is 30KHz, the subcarrier spacing carrying the target discovery reference signal corresponds to the subcarrier spacing of "30 KHz" in table 2. Then, the continuity information between SS blocks corresponding to the determined subcarrier spacing, that is, the continuity information between SS blocks corresponding to the subcarrier spacing of "30 KHz" in table 2, may be obtained as "discontinuity between SS blocks, or 2 consecutive SS blocks exist within each consecutive 14 symbols, and the SS block between each consecutive 14 symbols is discontinuous".

It should be noted that, for the above implementation, the maximum number of consecutive SS blocks at different subcarrier intervals may include the following: if the interval of the sub-carriers carrying the target finding reference signal is 15KHz, the maximum number of the continuous SS blocks is 1; if the interval size of the sub-carrier carrying the target finding reference signal is 30KHz, the maximum number of the continuous SS blocks is 1 or 2; if the interval of the sub-carriers carrying the target finding reference signal is 120KHz, the maximum number of the continuous SS blocks is 2; if the subcarrier spacing size carrying the target discovery reference signal is 240KHz, the maximum number of consecutive SS blocks is 4. The correspondence relationship can be seen in table 3 below.

TABLE 3

Subcarrier spacing	Maximum number of consecutive SS blocks
		15KHz	1
30KHz	1 or 2
		120KHz	2
240KHz	4

Through the correspondence in table 3 above, the maximum number of consecutive SS blocks at different subcarrier intervals can be determined.

In step S310, the continuity information between the searched SS blocks is used as the continuity information between the SS blocks included in the target discovery reference signal.

In practical applications, the processing of steps S304 to S306 and the processing of steps S308 to S310 are performed in sequence, and the processing of steps S304 to S306 and the processing of steps S308 to S310 are not limited to the above sequence, and the two processes may be performed simultaneously, or the processing of steps S308 to S310 may be performed first, and then the processing of steps S304 to S306 may be performed, and the order of performing the two processes is not limited in the embodiment of the present application.

As can be seen from the above, the number of SS blocks included in the discovery reference signal (including the target discovery reference signal) is not only related to the maximum number of SS blocks corresponding to the carrier frequency, but also related to whether SS blocks are continuously correlated at different subcarrier intervals. In combination with the above different situations, the target maximum number of SS blocks that can be included in the target discovery reference signal may be further determined, specifically, refer to the following processing from step S312 to step S314, or the processing of step S316.

In step S312, if it is determined that only consecutive SS blocks are contained in the target discovery reference signal according to the consecutive information between SS blocks contained in the target discovery reference signal, a target maximum number of SS blocks that can be contained in the target discovery reference signal is determined according to the maximum number of SS blocks contained in the target discovery reference signal and the consecutive information between SS blocks contained in the target discovery reference signal.

In implementation, if it is determined that only consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal (i.e., consecutive information between SS blocks determined based on the correspondence of table 2), the following conclusions can be reached by combining table 1, table 2, and derived table 3 as described above: if the interval size of the sub-carrier carrying the target discovery reference signal is 15KHz and the target discovery reference signal must contain continuous SS blocks, the target maximum number of SS blocks that can be contained in the target discovery reference signal is 1; if the subcarrier spacing size carrying the target discovery reference signal is 30KHz and the target discovery reference signal must contain consecutive SS blocks, the target maximum number of SS blocks that can be contained in the target discovery reference signal is 1 or 2; if the interval size of the sub-carrier carrying the target discovery reference signal is 120KHz and the target discovery reference signal must contain continuous SS blocks, the target maximum number of SS blocks that can be contained in the target discovery reference signal is 2; if the subcarrier spacing size carrying the target discovery reference signal is 240KHz and the target discovery reference signal must contain consecutive SS blocks, the target maximum number of SS blocks that can be contained in the target discovery reference signal is 4. The correspondence relationship can be seen in table 4 below.

TABLE 4

From the above correspondence relationship in table 4, it is possible to determine the target maximum number of SS blocks that can be included in the target discovery reference signal when the target discovery reference signal must include consecutive SS blocks at different subcarrier intervals.

In step S314, a target discovery reference signal is generated based on the target maximum number.

In implementation, after obtaining the target maximum number of SS blocks that can be included in the target discovery reference signal, the target discovery reference signal may be constructed, for example, the subcarrier spacing size for carrying the target discovery reference signal is 120KHz, and when the target discovery reference signal must include consecutive SS blocks, the target maximum number of SS blocks that can be included in the target discovery reference signal is 2, 2 SS blocks may be obtained, and the 2 SS blocks are consecutive, and the target discovery reference signal may be constructed by directly using the 2 consecutive SS blocks, where the construction of each SS block may refer to relevant contents in step S302 described above. Of course, in practical application, the method is not limited to the above-mentioned one construction method, and may also include a plurality of construction methods, which may be set according to practical situations, and this is not limited in this application.

In addition to the cases of step S312 to step S314 described above, there may be a case where the following processing of step S316 may be specifically referred to.

In step S316, if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal, the target discovery reference signal is generated based on the maximum number of SS blocks included in the target discovery reference signal.

In implementation, if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal, it may be determined that the maximum number of SS blocks that can be included in the target discovery reference signal is limited only to the maximum number of SS blocks corresponding to the carrier frequency, i.e., as shown in the correspondence relationship of table 1. At this time, the target discovery reference signal may be generated based on the maximum number of SS blocks contained in the target discovery reference signal.

The processing manner for generating the target discovery reference signal based on the maximum number of SS blocks included in the target discovery reference signal may be various, and an optional processing manner is provided below, and specifically may include the following step one and step two.

Step one, determining the number of SS blocks required for generating the target discovery reference signal based on the maximum number of SS blocks contained in the target discovery reference signal.

In implementation, for example, if the carrier frequency carrying the target discovery reference signal is 2GHz, the carrier frequency carrying the target discovery reference signal is located in the carrier frequency interval "less than 3 GHz" in table 1. The determined maximum number of SS blocks corresponding to the carrier frequency interval may be obtained, that is, the maximum number of SS blocks corresponding to the carrier frequency interval "less than 3 GHz" in table 1 is 4. It may be determined that the number of SS blocks required to generate the target discovery reference signal may be 1, 2, 3, or 4.

And step two, setting corresponding SS blocks according to the determined number, and supplementing predetermined symbols to the sign bits between two adjacent and discontinuous SS blocks to generate the target discovery reference signal.

In implementation, if the number of SS blocks required for generating the target discovery reference signal is 4, 4 SS blocks may be obtained (where the construction of each SS block may refer to the related content in step S302 above), and the 4 SS blocks are not consecutive to each other because the target discovery reference signal includes non-consecutive SS blocks. Since consecutive symbols are included in the discovery reference signal (but the number of symbols included in the discovery reference signal is not necessarily 12), and thus discontinuous sign bits between SS blocks need to be filled, a symbol for complementing the sign bits may be set in advance, and the discontinuous sign bits between SS blocks may be complemented with a predetermined symbol, so that consecutive symbols are included in the target discovery reference signal, thereby generating the target discovery reference signal.

Wherein the predetermined symbols comprise a combination of one or more of: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in PBCH, and a CSI-RS symbol.

EXAMPLE III

Based on the same idea, the embodiment of the present application further provides a device for generating a discovery reference signal. The device may be the network side device provided in the foregoing embodiment.

The generation apparatus of the discovery reference signal may include a frequency acquisition module 401, an information determination module 402, and a signal generation module 403, wherein:

a frequency obtaining module 401, configured to obtain a carrier frequency and a subcarrier interval for carrying a target discovery reference signal;

an information determining module 402, configured to determine a maximum number of SS blocks of a synchronization signal included in the target discovery reference signal according to the carrier frequency, and determine continuous information between SS blocks included in the target discovery reference signal according to the subcarrier interval;

a signal generating module 403, configured to generate the target discovery reference signal according to continuous information between a maximum number of SS blocks included in the target discovery reference signal and SS blocks included in the target discovery reference signal.

In the embodiment of the application, the SS block includes a primary synchronization signal PSS symbol, a secondary synchronization signal SSs symbol, and a plurality of physical broadcast channel PBCH symbols, where the PBCH carries a demodulation reference signal DMRS;

In this embodiment of the application, the information determining module 402 includes:

In this embodiment of the present application, the correspondence between the pre-stored carrier frequency and the maximum number of SS blocks at least includes:

In this embodiment of the present application, the correspondence between the pre-stored subcarrier intervals and the consecutive information between the SS blocks at least includes:

In this embodiment of the application, the signal generating module 403 includes:

In this embodiment of the present application, the signal generating module 403 is configured to generate the target discovery reference signal based on the maximum number of SS blocks included in the target discovery reference signal if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to consecutive information between SS blocks included in the target discovery reference signal.

In the embodiment of the present application, the predetermined symbol includes one or more of the following combinations: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in the PBCH, and a CSI-RS symbol.

The embodiment of the application provides a device for generating discovery reference signals, which determines the maximum number of SS blocks contained in a target discovery reference signal through an acquired carrier frequency carrying the target discovery reference signal, determines continuous information among the SS blocks contained in the target discovery reference signal according to an acquired subcarrier interval carrying the target discovery reference signal, and further generates the target discovery reference signal according to the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks contained in the target discovery reference signal, so that the number of SS blocks contained in the target discovery reference signal can be determined through the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks, and the corresponding target discovery reference signal is constructed based on the number of SS blocks, thereby enabling a user-side device to discover a corresponding cell of an unlicensed spectrum through the generated target discovery reference signal, thereby enabling the terminal device to access the cell to improve throughput.

Example four

Based on the same idea, the embodiment of the present application further provides a network side device. The device may be a base station, a network side device such as an MME, and the like provided in the foregoing embodiment.

Fig. 5 is a schematic structural diagram of a network-side device 500 according to still another embodiment of the present application. The physical device structure diagram of the network side apparatus 500 may be as shown in fig. 5, and includes a processor 502, a memory 503, a transmitter 501 and a receiver 504. In particular applications, transmitter 501 and receiver 504 may be coupled to antenna 505.

The memory 503 stores programs. In particular, the program may include program code comprising computer operating instructions. Memory 503 may include both read-only memory and random-access memory, and provides instructions and data to processor 502. The memory 503 may comprise a high-speed RAM memory, and may further include a non-volatile memory (non-volatile memory), such as at least 1 disk memory.

The processor 502 executes the program stored in the memory 503.

Specifically, in the network-side device 500, the processor 502 may execute the following method through the receiver 504 and the transmitter 501:

Optionally, the predetermined symbols comprise a combination of one or more of: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in the PBCH, and a CSI-RS symbol.

The embodiment of the application provides a network side device, which determines the maximum number of SS blocks contained in a target discovery reference signal through an acquired carrier frequency carrying the target discovery reference signal, determines continuous information among the SS blocks contained in the target discovery reference signal according to an acquired subcarrier interval carrying the target discovery reference signal, and further generates the target discovery reference signal according to the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks contained in the target discovery reference signal, so that the number of SS blocks contained in the target discovery reference signal can be determined through the maximum number of SS blocks contained in the target discovery reference signal and the continuous information among the SS blocks, and a corresponding target discovery reference signal is constructed based on the number of SS blocks, thereby enabling a user side device to discover a corresponding unlicensed spectrum cell through the generated target discovery reference signal, thereby enabling the terminal device to access the cell to improve throughput.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.

It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a camera module, system, or computer program product for optical zoom. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of optically variable camera modules, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

In a typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include forms of volatile memory in a computer readable medium, Random Access Memory (RAM) and/or non-volatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of a computer-readable medium.

Computer readable media, both permanent and non-permanent, removable and non-removable, may implement information storage by any optically variable camera module or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, an optical zoom camera module, an article, or an apparatus that comprises a list of elements includes not only those elements, but also other elements not expressly listed or inherent to such process, optical zoom camera module, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of additional like elements in a process, an optical zoom camera module, a commodity, or a device that comprises the element.

It will be apparent to those skilled in the art that embodiments of the present application may provide a camera module, system or computer program product that is optical zoom. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the optical zoom camera module embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the optical zoom camera module embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A method for generating a discovery reference signal, the method comprising:

determining the number of SS blocks included in the target discovery reference signal according to the maximum number of SS blocks included in the target discovery reference signal and continuity information between the SS blocks included in the target discovery reference signal, and generating the target discovery reference signal based on the number of SS blocks.

2. The method of claim 1, wherein the SS block comprises one Primary Synchronization Signal (PSS) symbol, one Secondary Synchronization Signal (SSS) symbol, and a plurality of Physical Broadcast Channel (PBCH) symbols, wherein the PBCH carries demodulation reference signals (DMRS);

3. The method of claim 1, wherein the determining the maximum number of SS blocks included in the target discovery reference signal according to the carrier frequency comprises:

4. The method of claim 1, wherein the determining the consecutive information between the SS blocks included in the target discovery reference signal according to the subcarrier spacing comprises:

5. The method of claim 3, wherein the pre-stored correspondence of carrier frequencies to a maximum number of SS blocks comprises at least:

6. The method of claim 4, wherein the pre-stored correspondence between subcarrier spacing and consecutive information between SS blocks comprises at least:

7. The method of claim 6, wherein the determining the number of SS blocks included in the target discovery reference signal according to the maximum number of SS blocks included in the target discovery reference signal and continuity information between the SS blocks included in the target discovery reference signal, the target discovery reference signal being generated based on the number of SS blocks comprises:

8. The method of claim 6, wherein the determining the number of SS blocks included in the target discovery reference signal according to the maximum number of SS blocks included in the target discovery reference signal and continuity information between the SS blocks included in the target discovery reference signal, the target discovery reference signal being generated based on the number of SS blocks comprises:

9. The method of claim 8, wherein the generating the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal comprises:

10. The method of claim 9, wherein the predetermined symbols comprise a combination of one or more of: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in the PBCH, and a channel state information reference signal (CSI-RS) symbol.

11. An apparatus for generating a discovery reference signal, the apparatus comprising:

a signal generating module, configured to determine, according to the maximum number of SS blocks included in the target discovery reference signal and continuity information between SS blocks included in the target discovery reference signal, the number of SS blocks included in the target discovery reference signal, and generate the target discovery reference signal based on the number of SS blocks.

12. The apparatus of claim 11, wherein the SS block comprises one Primary Synchronization Signal (PSS) symbol, one Secondary Synchronization Signal (SSs) symbol, and a plurality of Physical Broadcast Channel (PBCH) symbols, wherein the PBCH carries a demodulation reference signal (DMRS);

13. The apparatus of claim 11, wherein the information determining module comprises:

14. The apparatus of claim 11, wherein the information determining module comprises:

15. The apparatus of claim 13, wherein the pre-stored correspondence of carrier frequencies to a maximum number of SS blocks comprises at least:

16. The apparatus of claim 14, wherein the pre-stored correspondence between subcarrier spacing and consecutive information between SS blocks at least comprises:

17. The apparatus of claim 16, wherein the signal generation module comprises:

18. The apparatus of claim 16, wherein the signal generating module is configured to generate the target discovery reference signal based on a maximum number of SS blocks included in the target discovery reference signal if it is determined that non-consecutive SS blocks are included in the target discovery reference signal according to continuity information between SS blocks included in the target discovery reference signal.

19. The apparatus of claim 18, wherein the signal generation module comprises:

20. The apparatus of claim 19, wherein the predetermined symbols comprise a combination of one or more of: a PSS symbol, a SSS symbol, a PBCH symbol, a DMRS symbol carried in the PBCH, and a channel state information reference signal (CSI-RS) symbol.

21. A network-side device, comprising: memory, processor and computer program stored on the memory and executable on the processor, which computer program, when executed by the processor, carries out the steps of the method according to any one of claims 1 to 10.