CN106376050B

CN106376050B - Setting/determining method and device of subcarrier interval, base station and terminal

Info

Publication number: CN106376050B
Application number: CN201610869949.4A
Authority: CN
Inventors: 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: 2016-09-30
Filing date: 2016-09-30
Publication date: 2022-03-18
Anticipated expiration: 2036-09-30
Also published as: CN106376050A

Abstract

The invention provides a method, a device, a base station and a terminal for setting/determining subcarrier intervals, wherein the method for setting/determining the subcarrier intervals comprises the following steps: setting the subcarrier spacing of reference numerology to 2 KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿWherein n is an integer greater than or equal to-2. By the technical scheme of the invention, the terminal equipment determines the granularity of the time-frequency resources of the synchronization signal, the reference signal and the resource to be transmitted on the basis of acquiring the reference numerology, especially the subcarrier interval, the subframe (subframe) time unit and the like of the reference numerology, and the reliability and the accuracy of synchronous communication between the terminal equipment and the base station equipment are further improved.

Description

Setting/determining method and device of subcarrier interval, base station and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method for setting/determining a reference numerology subcarrier spacing, an apparatus for setting/determining a reference numerology subcarrier spacing, a base station, and a terminal.

Background

The main scenes of the future 5G communication include the following three scenes: eMBB, mMTC and URLLC. The three scenarios are different in the types of services and the requirements.

Such as the Enhanced Mobile BroadBand (eMBB) service, two main indicators are high bandwidth and low latency (4 ms is 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 certain time, and uplink scheduling delay and feedback delay of a HARQ (hybrid Automatic Repeat Request) technique also bring about delay influence, so the eMBB service requires a larger subcarrier interval and a smaller time granularity.

Also, for example, mtc (Massive Machine Type Communications) service requires narrowband services and long battery life, and such service requires a subcarrier spacing with smaller granularity and a time domain resource with wider granularity.

For URLLC (Ultra-Reliable and Low Latency Communications, high reliability and Low Latency) service, the delay requirement is 0.5ms, and it is also necessary to reduce the time domain scheduling granularity, uplink scheduling delay and delay impact caused by HARQ feedback delay.

In the above-mentioned 5G communication scenario, in order to adapt transmission requirements of multiple communication services, such as increasing bandwidth and reducing latency, multiple numerologies need to be introduced into an NR (New radio) system, such as numerology subcarrier spacing for eMBB service and URLLC service needs to be increased, and minimum transmission units need to be reduced.

In the related art LTE method, only one fixed subcarrier interval is 15KHz, and on the premise of this subcarrier interval, the subframe length is 1 ms. Then, the user can obtain synchronization of downlink time, i.e. frame synchronization, subframe synchronization and symbol synchronization, according to the default subcarrier spacing and subframe length, based on the synchronization signal, such as PSS/SSS, and/or reference signal, CRS/CSI-RS/DRS.

In the 5G NR, different services may use different subcarrier intervals, that is, the subcarrier interval and transmission time granularity used by each user at the time of uplink and downlink data transmission may be different. However, in the initial downlink time synchronization process, all users are required to have a reference number subcarrier spacing to acquire frame synchronization, subframe synchronization, and the like.

Therefore, how to set and/or determine the subcarrier spacing of reference numerology for different users under a unified air interface framework is a core technical problem for realizing synchronous communication between the terminal device and the base station device.

Disclosure of Invention

The present invention is based on at least one of the above technical problems, and proposes a setting/determining scheme for the subcarrier spacing of reference numerology, which sets the subcarrier spacing of reference numerology to 2 KHz of 15KHzⁿMultiplying and informing the terminal device for the terminal device to determine that the subcarrier spacing of the reference number capable of synchronous communication with the base station device is 2 KHz of 15KHzⁿThe synchronous communication refers to synchronization of data frames, subframe synchronization and symbol synchronization obtained by the terminal equipment.

In view of this, according to an embodiment of the first aspect of the present invention, there is provided a method for setting/determining a subcarrier spacing of reference numerology, including: setting the subcarrier spacing of reference numerology to 2 KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿWherein n is an integer greater than or equal to-2.

In this technical scheme, 2 KHz subcarrier spacing is set to be 15KHz by setting reference numerologyⁿMultiplying and informing the terminal device for the terminal device to determine that the subcarrier spacing of the reference number capable of synchronous communication with the base station device is 2 KHz of 15KHzⁿThe synchronous communication refers to synchronization of data frames, subframe synchronization and symbol synchronization obtained by the terminal equipment.

The theoretical range of subcarrier spacing in the NR system is 3.75KHz to 480KHz, and in order to meet the transmission requirements of different communication services, the base station device may determine the corresponding subcarrier spacing according to the transmission requirements of the communication services, and set the subcarrier spacing of reference numerology to 2 KHzⁿAnd informing the terminal equipment of synchronous communication while executing the communication serviceThe subcarrier spacing of the signal reference numerology is 2 KHz of 15KHzⁿAnd the synchronization of data frames, the sub-frame synchronization and the symbol synchronization between the terminal equipment and the base station equipment are ensured.

In the above technical solution, preferably, the method further includes: all terminal devices are configured with the same reference number subcarrier spacing on the same carrier.

In the technical scheme, the same carrier refers to a carrier with the same frequency point and the same bandwidth.

In the above technical solution, preferably, the method further includes: setting a subcarrier interval occupied by a specific downlink signal as reference number, setting a first reference subframe for transmitting the specific downlink signal, and transmitting the specific downlink signal at a specified subcarrier interval in the first reference subframe to indicate that the subcarrier interval of the reference number at which the terminal device can perform synchronous communication with the base station device is the subcarrier interval for transmitting the specific downlink signal.

In this technical solution, a specific downlink signal is transmitted at a specified subcarrier interval within a first reference subframe to indicate that a subcarrier interval of reference numerology at which a terminal device can perform synchronous communication with a base station device is a subcarrier interval of specific downlink signal transmission.

Specifically, based on the method of implicit indication of subcarrier spacing of reference numerology, it is detected that the transmission bandwidth of a specific downlink signal is (M × N × 15 × 2)ⁿ) KHz, where M is the number of RBs occupied by the specific downlink signal, N is the number of subcarriers included in each RB, and these M and N are pre-stored in the chip of the terminal device, so that the subcarrier spacing of reference numerology can be obtained according to the transmission bandwidth, M, and N of the specific downlink signal.

Specifically, the setting/determining of the subcarrier spacing of reference numerology may be implemented by using an implicit indication, for example, in a cell search process of an LTE network, the subcarrier spacing of numerology of PSS (Primary Synchronization Signal)/SSS (Secondary Synchronization Signal) signaling is 15KHz, and a subframe duration is 1 ms. At this time, the base station device sets a bandwidth occupied by the PSS/SSS signaling to be 72 (mxn is 6 × 12, each RB includes 12 subcarriers, and a PSS/SSS transmission bandwidth is the central 6 RBs) subcarrier bandwidth, i.e., 1.08MHz, and a duration occupied is 1 symbol, i.e., 1/14 ms. Then the PSS/SSS signaling still occupies 72 subcarriers with a bandwidth of 2.16MHz and a duration of 0.5/14 ms for 1 symbol when numerology is 30 KHz.

By analogy, the bandwidth occupied by the PSS/SSS signaling is 2 of the 1.08MHz bandwidth in LTEⁿThe subcarrier spacing of the reference numerology is 2 KHz of 15KHzⁿAnd (4) doubling.

In addition, one RB (Resource Block) in the NR system may become 16 subcarriers, that is, the occupied bandwidth (16/12) × 2 of PSS/SSS signaling with 15KHz subcarrier spacing of bandwidth being reference numerologyⁿThe subcarrier spacing of the reference numerology is 2 KHz of 15ⁿThe time length occupied by the terminal equipment in the determination of the cyclic prefix part and/or the time length occupied by the PSS/SSS signaling is 1/(2) of 1/14ms in the LTE networkⁿ) Then, the subcarrier spacing of the reference numerology is determined to be 2 KHz of 15KHzⁿAnd (4) doubling.

The Specific downlink Signal is any combination of one or more of a primary synchronization Signal/a secondary synchronization Signal, a Reference Signal (including a CRS-Cell Specific Signal, a CSI-RS: Channel State Information-Reference Signal, a DRS-Discovery Reference Signal and a new Reference Signal which may be designed), a paging Signal and System Information (including MIB: Master Information Block and SIB: System Information Block).

In the above technical solution, preferably, the method further includes: and sending system information carrying the reference numerology subcarrier interval to the terminal device to indicate that the reference numerology subcarrier interval in which the terminal device can perform synchronous communication with the base station device is the subcarrier interval set in the system information.

In this technical scheme, a terminal device parses system information to determine a subcarrier spacing of reference numerology explicitly indicated by the system information.

The System Information includes a Master Information Block (MIB) and a plurality of System Information Blocks (SIBs). The MIB uses a fixed scheduling scheme with a 40ms period, where four transmissions are sent in the 40ms period, the first transmission being scheduled in subframe #0 of a radio frame satisfying the system frame number SFN mod 4 = 0, the last three transmissions being repeated in subframe #0 of other radio frames.

The System Information Block Type1 applies a fixed scheduling pattern with a period of 80 ms, where it is sent four times in 80 ms. The first transmission is scheduled in subframe #5 of a radio frame satisfying the system frame number SFN mod 8 = 0, followed three times by repeated transmission in subframe #5 of other radio frames satisfying the system frame number SFN mod 2 = 0.

It is particularly noted that if the system information indicates a subcarrier spacing for reference numerology, then the bandwidth of a particular downlink signal, such as PSS/SSS, does not necessarily have to be 2 of 1.08MHz in LTEⁿOr (16/12). times.2ⁿThe transmission time length of the PSS/SSS is not necessarily 1/(2) of 1/14ms in LTEⁿ) It is used.

In the above technical solution, preferably, the method further includes: setting a subcarrier spacing of reference numerology according to the characteristic information of the carrier, and transmitting a specific downlink signal on the carrier, so that the terminal device determines the subcarrier spacing of reference numerology according to the detected characteristic information of the carrier and a pre-stored subcarrier spacing mapping table of the carrier characteristic information and the reference numerology, wherein the characteristic information of the carrier comprises a carrier frequency point and/or a carrier bandwidth.

In the technical scheme, when detecting a carrier carrying a specific downlink signal, a terminal device analyzes feature information of the carrier, such as a carrier frequency point and/or a carrier bandwidth, and determines a reference numerology subcarrier spacing according to the feature information of the carrier and a subcarrier spacing mapping table of pre-stored carrier feature information and reference numerology.

In the foregoing technical solution, preferably, the specific downlink signal is any combination of one or more of a primary synchronization signal/secondary synchronization signal, a reference signal, a paging signal, and system information.

In the above technical solution, preferably, the method further includes: all terminal devices are configured with different reference numerology subcarrier spacings on the same carrier.

In the above technical solution, preferably, the method further includes: and sending radio resource control signaling or downlink control signaling to the terminal equipment according to the equipment type of the terminal equipment and/or the service type required to be transmitted so as to semi-statically or dynamically inform the terminal equipment of the subcarrier interval of reference numerology through the radio resource control signaling or the downlink control signaling.

In this technical solution, the terminal device is notified of the subcarrier spacing of reference number semi-statically or dynamically through radio resource control signaling or downlink control signaling, for example:

(1) the base station device sends an RRC (Radio Resource Control) signaling to a specific UE (User Equipment) to separately notify a reference number interval that the specific UE can perform synchronous communication, where the reference number interval may be a reference number subcarrier interval that a first service needs to use when the specific UE is in a connected state. The subcarrier spacing of the reference number may be semi-statically changed, for example, when the first service is not ended yet and a second service arrives at the specific UE, the specific UE continues to use the reference number of the first service as the reference number of the second service. However, if the second service arrives at the specific UE after the first service is ended, the base station device may again transmit RRC signaling for indicating the subcarrier spacing of the reference number to define the number of the second service as the reference number of the user, or may also use random access feedback signaling to indicate the reference number.

(2) The subcarrier spacing of reference numerology is defined according to the communication capability of the UE or the UE type, for example, some UEs are MTC terminals, and then the reference numerology of these terminals directly writes the numerology when performing MTC services into the chips of these terminals, for example, 3.75 KHz. As with other terminals supporting eMBB traffic and URLLC traffic, reference numerology is used at 15KHz or at higher 30KHz or 60KHz, using LTE. The indication method of the subcarrier spacing of reference numerology may be directly written into a hardware chip of the UE, and does not need signaling or system information notification.

In the above technical solution, preferably, the method further includes: after the terminal device determines the reference numerology subcarrier spacing capable of synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing for the terminal device to perform uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

In this technical solution, after the terminal device determines the subcarrier spacing of Reference numerology capable of performing synchronous communication with the base station device, a dedicated numerology subcarrier spacing of the terminal device is set, so that the terminal device can send or receive SRS (Sounding Reference Signals), or Access to each communication Channel based on the dedicated numerology subcarrier spacing, such as PRACH (Physical Random Access Channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel, Uplink Control Channel), PUSCH (Physical Uplink Control Channel), and the like.

Wherein the dedicated numerology subcarrier spacing may be configured based on a user traffic type.

In the above technical solution, preferably, the method further includes: setting information of the dedicated numerology subcarrier spacing is a relative ratio between the dedicated numerology subcarrier spacing and a reference numerology subcarrier spacing of the terminal, so that the terminal device determines the dedicated numerology subcarrier spacing according to the relative ratio and the reference numerology subcarrier spacing; or the setting information of the dedicated numerology subcarrier spacing is an absolute value of the dedicated numerology subcarrier spacing.

In this technical solution, after the terminal device determines the Reference numerology subcarrier spacing, when the base station device further provides the terminal device with the serving numerology according to the service type configuration, the RRC signaling or the downlink control signaling only needs to give a ratio of the current dedicated numerology subcarrier spacing to the Reference numerology subcarrier spacing, where the ratio is 2^mAnd m is a negative integer, 0 and a positive integer.

The dedicated numerology subcarrier spacing and subframe length may also be given in the random access procedure msg.4 or other time RRC signaling.

In the above technical solution, preferably, the method further includes: and according to the subcarrier interval of the dedicated numerology and the second reference subframe, performing uplink and downlink time-frequency resource allocation on the terminal equipment and sending a corresponding downlink control signaling to the terminal equipment, wherein the downlink control signaling is used for setting a first sending time starting position and a sending time length of data sending of the terminal equipment through a physical downlink shared channel and/or a physical uplink shared channel.

In the foregoing technical solution, preferably, when the second reference subframe is a transmission subframe of self-contained downlink data, the downlink control signaling is further used to set a second transmission time starting position of feedback information of a hybrid automatic repeat request service corresponding to the downlink data received by the terminal device.

In the above technical solution, preferably, the subframe position of the downlink control signaling is added with a position offset to determine a first offset subframe, the symbol position of the downlink control signaling is added with an offset to determine a first offset symbol, and the first offset symbol in the first offset subframe is the first transmission time starting point position.

In this technical solution, after instructing the terminal device to determine a subframe length of a dedicated numerology, when a DCI (Downlink Control Information) schedules uplink and Downlink channel transmission resources, a base station device needs to give a time position starting point and a time length of the transmission resources, where the time position starting point gives a case where a current subframe position of the DCI signaling is f, a subframe position of the time starting point position is f + k, and a current symbol position of the DCI signaling is z, a symbol position of the time starting point position is z + l, and the transmission time length is given at the same time: for example, 14 symbols in one subframe (or symbols and gap time occupied by DCI signaling and HARQ feedback time are to be removed), or one slot, that is, 5 or 6 symbols of a half subframe, or one mini-slot, that is, about 2 symbols, where f, k, and z are integers. The instructions of f, k, and z may be indicated by using a bit sequence, but a mapping table of the bit sequence and the values of f, k, and z must be stored in the terminal device in advance.

The value of the transmission time length is an integer number of symbols, and/or an integer number of slots (each slot includes a plurality of symbols) and/or an integer number of mini-slots (each mini-slot includes a plurality of symbols) and/or an integer number of subframes.

In the above technical solution, preferably, the starting position subframe or the ending position subframe of the downlink data is sent plus the offset to determine a second offset subframe, the starting position symbol or the ending position symbol of the downlink data is sent plus the offset to determine a second offset symbol, and the second offset symbol in the second offset subframe is the second sending time starting position.

In the technical scheme, a subframe or slot for transmitting self-contained downlink data needs to give the HARQ feedback time for transmitting corresponding downlink data, and also gives an offset value of the subframe and an offset value of a symbol, and the transmission time length is generally a default value, and no extra signaling notification is needed.

In the above technical solution, preferably, the method further includes: after the terminal device determines the subcarrier spacing of reference numerology and transmits the random access preamble based on the subcarrier spacing, the random access preamble transmitted by the terminal device is received and parsed to implement random access of the terminal device.

According to an embodiment of the second aspect of the present invention, there is provided a setting/determining apparatus of subcarrier spacing of reference numerology, including: a setting unit for setting the subcarrier spacing of the reference numerology to 2 KHz of 15KHzⁿAnd informing the terminal device to indicate the terminal device2 KHz subcarrier spacing for reference numerology capable of synchronous communication with base station equipmentⁿWherein n is an integer greater than or equal to-2.

The theoretical range of subcarrier spacing in the NR system is 3.75KHz to 480KHz, and in order to meet the transmission requirements of different communication services, the base station device may determine the corresponding subcarrier spacing according to the transmission requirements of the communication services, and set the subcarrier spacing of reference numerology to 2 KHzⁿAnd a 2 KHz subcarrier spacing of 15KHz for informing the terminal device of the reference numerology for synchronous communication while performing the communication serviceⁿAnd the synchronization of data frames, the sub-frame synchronization and the symbol synchronization between the terminal equipment and the base station equipment are ensured.

In the above technical solution, preferably, the setting unit is further configured to: all terminal devices are configured with the same reference number subcarrier spacing on the same carrier.

In the above technical solution, preferably, the setting unit is further configured to: setting a subcarrier interval occupied by a specific downlink signal as reference number, setting a first reference subframe for transmitting the specific downlink signal, and transmitting the specific downlink signal at a specified subcarrier interval in the first reference subframe to indicate that the subcarrier interval of the reference number at which the terminal device can perform synchronous communication with the base station device is the subcarrier interval for transmitting the specific downlink signal.

In addition, one RB (Resource Block) in the NR system may become 16 subcarriers, that is, the occupied bandwidth (16/12) × 2 of PSS/SSS signaling with 15KHz subcarrier spacing of bandwidth being reference numerologyⁿThe subcarrier spacing of the reference numerology is 2 KHz of 15ⁿThe time length occupied by the terminal equipment in the determination of the cyclic prefix part and/or the time length occupied by the PSS/SSS signaling is 1/(2) of 1/14ms in the LTE networkⁿ) Then, the subcarrier spacing of reference numerology is determined to be 15KHz2ⁿAnd (4) doubling.

The specific downlink signal is any combination of one or more of a primary synchronization signal/secondary synchronization signal, a reference signal, a paging signal and system information.

In the above technical solution, preferably, the method further includes: a first sending unit, configured to send, to the terminal device, system information of a reference number interval, so as to indicate that the reference number interval, at which the terminal device can perform synchronous communication with the base station device, is the subcarrier interval set in the system information.

In the above technical solution, preferably, the setting unit is further configured to: setting a subcarrier spacing of reference numerology according to the characteristic information of the carrier, and transmitting a specific downlink signal on the carrier, so that the terminal device can determine the subcarrier spacing of reference numerology according to the detected characteristic information of the carrier and a subcarrier spacing mapping table of pre-stored carrier characteristic information and reference numerology, wherein the characteristic information of the carrier comprises carrier frequency points and/or carrier bandwidth.

In the above technical solution, preferably, the setting unit is further configured to: all terminal devices are configured with different reference numerology subcarrier spacings on the same carrier.

In the above technical solution, preferably, the method further includes: a second sending unit, configured to send a radio resource control signaling or a downlink control signaling to the terminal device according to the device type of the terminal device and/or the service type to be transmitted, so as to semi-statically or dynamically notify the terminal device of the subcarrier spacing of reference number through the radio resource control signaling or the downlink control signaling.

In the above technical solution, preferably, the setting unit is further configured to: after the terminal device determines the reference numerology subcarrier spacing capable of synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing for the terminal device to perform uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

In the above technical solution, preferably, the setting information of the dedicated numerology subcarrier spacing is a relative ratio between the dedicated numerology subcarrier spacing and a reference numerology subcarrier spacing of the terminal, so that the terminal device determines the dedicated numerology subcarrier spacing according to the relative ratio and the reference numerology subcarrier spacing; or the setting information of the dedicated numerology subcarrier spacing is an absolute value of the dedicated numerology subcarrier spacing.

In this technical solution, after the terminal device determines the subcarrier spacing of Reference numerology, when the base station device configures dedicated numerology for the terminal device according to the service type, the RRC signaling or downlink control signaling only needs to give a ratio of the current subcarrier spacing of dedicated numerology/the subcarrier spacing of Reference numerology, where the ratio is 2^mAnd m is a negative integer, 0 and a positive integer.

In the above technical solution, preferably, the method further includes: and a third sending unit, configured to perform uplink and downlink time-frequency resource allocation on the terminal device according to the dedicated numerology subcarrier interval and the second reference subframe, and send a corresponding downlink control signaling to the terminal device, where the downlink control signaling is used to set a first sending time starting position and a sending time length for the terminal device to perform data sending through a physical downlink shared channel and/or a physical uplink shared channel.

In this technical solution, after instructing the terminal device to determine a subframe length of a dedicated numerology, when a DCI (Downlink Control Information) schedules uplink and Downlink channel transmission resources, a base station device needs to give a time position starting point and a time length of the transmission resources, where the time position starting point gives a case where a current subframe position of the DCI signaling is f, a subframe position of the time starting point position is f + k, and a current symbol position of the DCI signaling is z, a symbol position of the time starting point position is z + l, and the transmission time length is given at the same time: for example, 14 symbols in one subframe (or symbols and gap time occupied by DCI signaling and HARQ feedback time are to be removed), or one slot, that is, 5 or 6 symbols of a half subframe, or one mini-slot, that is, about 2 symbols, where f, k, and z are integers. It is to be noted that although the indications of f, k, and z may be indicated by using a bit sequence, a mapping table of the bit sequence and the values of f, k, and z must be stored in the terminal device in advance.

In the above technical solution, preferably, the method further includes: and an access unit, configured to receive and parse the random access preamble sent by the terminal device to implement random access of the terminal device, after the terminal device determines that the subcarrier spacing of the reference numerology sends the random access preamble based on the subcarrier spacing.

According to an embodiment of the third aspect of the present invention, there is provided a base station apparatus including: means for setting/determining subcarrier spacing for reference numerology according to any of the above second aspects.

According to an embodiment of the fourth aspect of the present invention, there is provided a setting/determining method of subcarrier spacing of reference numerology, including: acquiring a specific downlink signal which is sent by a base station at a specified subcarrier interval in a first reference subframe; determining a transmission bandwidth for transmitting a specific downlink signal and prestored parameters M and N corresponding to the transmission bandwidth, wherein M is the number of resource blocks occupied by the specific downlink signal, and N is the data of the number of subcarriers contained in each resource block; and determining a quotient value obtained by dividing the transmission bandwidth by M and then dividing the transmission bandwidth by N, wherein the quotient value is a subcarrier interval of specific downlink signal transmission, namely a subcarrier interval of reference numerology capable of synchronously communicating with the base station equipment.

In this technical solution, the terminal device detects that a transmission bandwidth of a specific downlink signal is (M × N × 15 × 2) based on a method of implicit indication of subcarrier spacing of reference numerologyⁿ) KHz, where M is the number of RBs occupied by the specific downlink signal, N is the number of subcarriers included in each RB, and these M and N are pre-stored in the chip of the terminal device, so that the subcarrier spacing of reference numerology can be obtained according to the transmission bandwidth, M, and N of the specific downlink signal.

According to an embodiment of the fifth aspect of the present invention, there is provided a setting/determining apparatus of subcarrier spacing of reference numerology, including: an obtaining unit, configured to obtain a specific downlink signal sent by a base station at a specified subcarrier interval within a first reference subframe; the device comprises a determining unit, a determining unit and a processing unit, wherein the determining unit is used for determining a transmission bandwidth for transmitting a specific downlink signal and prestored parameters M and N corresponding to the transmission bandwidth, M is the number of resource blocks occupied by the specific downlink signal, and N is data of the number of subcarriers contained in each resource block; the determination unit is further configured to: and determining a quotient value obtained by dividing the transmission bandwidth by M and then dividing the transmission bandwidth by N, wherein the quotient value is a subcarrier interval of specific downlink signal transmission, namely a subcarrier interval of reference numerology capable of synchronously communicating with the base station equipment.

According to an embodiment of a sixth aspect of the present invention, there is provided a terminal device including: the apparatus for setting/determining reference numerology subcarrier spacing according to any of the above-mentioned fifth aspects, wherein the terminal device performs synchronous communication with the apparatus for setting/determining reference numerology subcarrier spacing according to any of the second aspects, so as to determine the reference numerology subcarrier spacing for synchronous communication with the base station device of the third aspect.

Through the technical scheme, the subcarrier interval of the reference numerology of the terminal equipment is indicated through the subcarrier interval or the explicit indication information occupied by the specific downlink signal, or the characteristic information of the carrier, or the dedicated numerology, or the equipment type of the terminal equipment and/or the service type needing transmission, so that the terminal equipment can acquire the time-frequency resource granularity of uplink and downlink channels, uplink and downlink signals and data, and the accuracy and the reliability of synchronous communication with the base station equipment are improved.

Drawings

Figure 1 shows a schematic flow chart of a first embodiment of a method for setting/determining subcarrier spacing according to the reference numerology of the present invention;

figure 2 shows a schematic flow chart of an embodiment two of the method for setting/determining the subcarrier spacing according to the reference numerology of the present invention;

figure 3 shows a schematic flow chart of a third embodiment of the method for setting/determining the subcarrier spacing according to the reference numerology of the present invention;

figure 4 shows a flow diagram of a fourth embodiment of the method for setting/determining the subcarrier spacing according to the reference numerology of the present invention;

figure 5 shows a flow chart of an embodiment five of the method for setting/determining the subcarrier spacing according to the reference numerology of the present invention;

figure 6 shows a flow diagram of an embodiment six of the method for setting/determining the subcarrier spacing according to the reference numerology of the present invention;

fig. 7 shows a schematic block diagram of a setting/determining apparatus of a subcarrier spacing of reference numerology according to an embodiment of the present invention;

FIG. 8 shows a schematic block diagram of a base station apparatus according to an embodiment of the present invention;

fig. 9 shows a schematic block diagram of a reference numerology subcarrier spacing setting/determining apparatus according to another embodiment of the present invention;

FIG. 10 shows a schematic block diagram of a terminal device according to an embodiment of the invention;

fig. 11 is a diagram illustrating a frame structure of uplink data of a subcarrier spacing setting/determining method of reference numerology according to an embodiment of the present invention;

fig. 12 is a diagram illustrating a frame structure of one downlink data of the reference numerology subcarrier spacing setting/determining apparatus according to an embodiment of the present invention;

fig. 13 is a diagram illustrating a frame structure of another uplink data of the subcarrier spacing setting/determining apparatus of reference numerology according to an embodiment of the present invention;

fig. 14 is a diagram illustrating a frame structure of another downlink data of the reference numerology subcarrier spacing setting/determining apparatus according to an embodiment of the present invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

Various embodiments of the setting/determining scheme of the subcarrier spacing according to the reference numerology of the present invention are specifically described below with reference to fig. 1 to 14.

The first embodiment is as follows:

as shown in fig. 1, the method for setting/determining subcarrier spacing of reference numerology according to an embodiment of the present invention includes: step 102, setting the subcarrier spacing of the reference numerology to 2 KHz of 15KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿIn which n is greater than or equal to-2An integer number.

Example two:

as shown in fig. 2, the method for setting/determining subcarrier spacing according to reference numerology in the embodiment of the present invention further includes, in addition to the first embodiment: step 202, setting the subcarrier interval occupied by the specific downlink signal as reference number, and setting a first reference subframe for transmitting the specific downlink signal, and transmitting the specific downlink signal at a specified subcarrier interval in the first reference subframe, so as to indicate that the subcarrier interval of reference number, at which the terminal device can perform synchronous communication with the base station device, is the subcarrier interval for transmitting the specific downlink signal.

Example three:

as shown in fig. 3, the method for setting/determining subcarrier spacing according to reference numerology in the embodiment of the present invention further includes, in addition to the first and second embodiments: step 302, sending the system information carrying the reference numerology subcarrier interval to the terminal device, so as to indicate that the reference numerology subcarrier interval in which the terminal device can perform synchronous communication with the base station device is the subcarrier interval set in the system information.

The System Information Block Type1 applies a fixed scheduling with 80 ms periodicity and retransmission within 80 ms time. With four transmissions in 80 ms time. The first transmission is scheduled in subframe #5 of a radio frame satisfying the system frame number SFN mod 8 = 0, followed three times by repeated transmission in subframe #5 of other radio frames satisfying the system frame number SFN mod 2 = 0.

It is particularly noted that if the system information indicates a subcarrier spacing for reference numerology, then the bandwidth of a particular downlink signal, such as PSS/SSS, does not necessarily have to beIs 2 of 1.08MHz in LTEⁿOr (16/12). times.2ⁿThe transmission time length of the PSS/SSS is not necessarily 1/(2) of 1/14ms in LTEⁿ) It is used.

Example four:

as shown in fig. 4, the method for setting/determining subcarrier spacing according to reference numerology in the embodiment of the present invention further includes, in addition to the first to third embodiments: step 402 sets a reference numerology subcarrier spacing according to the carrier characteristic information, and transmits a specific downlink signal on the carrier, so that the terminal device determines the reference numerology subcarrier spacing according to the detected carrier characteristic information and a pre-stored carrier characteristic information and reference numerology subcarrier spacing mapping table, wherein the carrier characteristic information includes carrier frequency points and/or carrier bandwidths.

Example five:

as shown in fig. 5, the method for setting/determining subcarrier spacing according to reference numerology in the embodiment of the present invention further includes, in addition to the first to fourth embodiments: step 502, sending a radio resource control signaling or a downlink control signaling to the terminal device according to the device type of the terminal device and/or the service type to be transmitted, so as to semi-statically or dynamically notify the terminal device of the subcarrier spacing of reference numerology through the radio resource control signaling or the downlink control signaling.

Example six:

as shown in fig. 6, the method for setting/determining subcarrier spacing according to reference numerology in the embodiment of the present invention further includes, in addition to the first to fifth embodiments: step 602, after the terminal device determines the subcarrier spacing of reference numerology capable of performing synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing, so that the terminal device performs uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

In the technical scheme, after the terminal device determines the Reference numerology subcarrier spacing, when the base station device configures the dedicated numerology for the terminal device according to the service type, the RRC signaling or the downlink control signaling only needs to give a value of current dedicated numerology subcarrier spacing/Reference numerology subcarrier spacing, which is 2^mAnd m is a negative integer, 0 and a positive integer.

In this technical solution, after instructing the terminal device to determine a subframe length of a dedicated numerology, when a DCI (Downlink Control Information) schedules uplink and Downlink channel transmission resources, a base station device needs to give a time position starting point and a time length of the transmission resources, where the time position starting point gives a case where a current subframe position of the DCI signaling is f, a subframe position of the time starting point position is f + k, and a current symbol position of the DCI signaling is z, a symbol position of the time starting point position is z + l, and the transmission time length is given at the same time: for example, 14 symbols in one subframe (or symbols and gap time occupied by DCI signaling and HARQ feedback time are to be removed), or one slot, that is, 5 or 6 symbols of a half subframe, or one mini-slot, that is, about 2 symbols, where f, k, and z are integers. The indication of f, k and z may also be indicated by using a bit sequence, but a mapping table of the bit sequence and the values of f, k and z must be stored in the terminal device in advance.

As shown in fig. 7, the reference numerology subcarrier spacing setting/determining apparatus 700 according to the embodiment of the present invention includes: a setting unit 702 for setting the subcarrier spacing of the reference numerology to 2 KHz of 15KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿWherein n is an integer greater than or equal to-2.

In this technical scheme, 2 KHz subcarrier spacing is set to be 15KHz by setting reference numerologyⁿAnd informing the terminal device of the subcarrier spacing for the terminal device to determine the reference number for synchronous communication with the base station device as2 of 15KHzⁿAnd the synchronous communication refers to synchronous subframe synchronization and symbol synchronization of a data frame obtained by the terminal equipment.

In the foregoing technical solution, preferably, the setting unit 702 is further configured to: all terminal devices are configured with the same reference number subcarrier spacing on the same carrier.

In the foregoing technical solution, preferably, the setting unit 702 is further configured to: setting a subcarrier interval occupied by a specific downlink signal as reference number, setting a first reference subframe for transmitting the specific downlink signal, and transmitting the specific downlink signal at a specified subcarrier interval in the first reference subframe to indicate that the subcarrier interval of the reference number at which the terminal device can perform synchronous communication with the base station device is the subcarrier interval for transmitting the specific downlink signal.

Specifically, based on the method of implicit indication of subcarrier spacing of reference numerology, it is detected that the transmission bandwidth of a specific downlink signal is (M × N × 15 × 2)ⁿ) KHz, where M is the number of RBs occupied by a specific downlink signal, and N is the subcarrier contained in each RBThe number of the reference numbers M and N are pre-stored in a chip of the terminal device, so that the subcarrier spacing of reference numerology can be obtained according to the transmission bandwidth, M and N of the specific downlink signal.

In the above technical solution, preferably, the method further includes: a first sending unit 704, configured to send, to the terminal device, system information carrying a reference numerology subcarrier interval, so as to indicate that the reference numerology subcarrier interval in which the terminal device can perform synchronous communication with the base station device is the subcarrier interval set in the system information.

The System Information includes a Master Information Block (MIB) and a plurality of System Information Blocks (SIBs). The MIB uses a fixed scheduling scheme with a 40ms period, where four transmissions are sent in the 40ms period, the first transmission being scheduled in subframe #0 of a radio frame satisfying the system frame number SFN mod 4 = 0, the last three transmissions being repeated in subframe #0 of other radio frames. The System Information Block Type1 applies a fixed scheduling pattern with a period of 80 ms, where it is sent four times in 80 ms. The first transmission is scheduled in subframe #5 of a radio frame satisfying the system frame number SFN mod 8 = 0, followed three times by repeated transmission in subframe #5 of other radio frames satisfying the system frame number SFN mod 2 = 0.

In the foregoing technical solution, preferably, the setting unit 702 is further configured to: setting a subcarrier spacing of reference numerology according to the characteristic information of the carrier, and transmitting a specific downlink signal on the carrier, so that the terminal device can determine the subcarrier spacing of reference numerology according to the detected characteristic information of the carrier and a subcarrier spacing mapping table of pre-stored carrier characteristic information and reference numerology, wherein the characteristic information of the carrier comprises carrier frequency points and/or carrier bandwidth.

In the foregoing technical solution, preferably, the setting unit 702 is further configured to: all terminal devices are configured with different reference numerology subcarrier spacings on the same carrier.

In the above technical solution, preferably, the method further includes: a second sending unit 706, configured to send a radio resource control signaling or a downlink control signaling to the terminal device according to the device type of the terminal device and/or the traffic type that needs to be transmitted, so as to semi-statically or dynamically notify the terminal device of the subcarrier spacing of reference numerology through the radio resource control signaling or the downlink control signaling.

In the foregoing technical solution, preferably, the setting unit 702 is further configured to: after the terminal device determines the reference numerology subcarrier spacing capable of synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing for the terminal device to perform uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

In the above technical solution, preferably, the method further includes: a third sending unit 708, configured to perform uplink and downlink time-frequency resource allocation on the terminal device according to the dedicated numerology subcarrier interval and the second reference subframe, and send a corresponding downlink control signaling to the terminal device, where the downlink control signaling is used to set a first sending time starting position and a sending time length for the terminal device to perform data sending through a physical downlink shared channel and/or a physical uplink shared channel.

In this technical solution, after instructing the terminal device to determine a subframe length of a dedicated numerology, when a DCI (Downlink Control Information) schedules uplink and Downlink channel transmission resources, a base station device needs to give a time position starting point and a time length of the transmission resources, where the time position starting point gives a case where a current subframe position of the DCI signaling is f, a subframe position of the time starting point position is f + k, and a current symbol position of the DCI signaling is z, a symbol position of the time starting point position is z + l, and the transmission time length is given at the same time: as shown in fig. 11 and 12, for example, 14 symbols in one subframe (or symbols and gap time occupied by DCI signaling and HARQ feedback time are to be removed), as shown in fig. 13 and 14, or 5 or 6 symbols in one slot, that is, a half subframe, or about 2 mini-slots, where f, k, and z are integers. The instructions of f, k, and z may be indicated by using a bit sequence, but a mapping table of the bit sequence and the values of f, k, and z must be stored in the terminal device in advance.

In the above technical solution, preferably, the method further includes: an accessing unit 710, configured to receive and parse the random access preamble sent by the terminal device to implement random access of the terminal device after the terminal device determines that the subcarrier spacing of the reference numerology sends the random access preamble based on the subcarrier spacing.

As shown in fig. 8, a base station apparatus 800 according to an embodiment of the present invention includes: means 700 for setting/determining subcarrier spacing for reference numerology according to any of the above second aspects.

Embodiment applicable to the terminal equipment side:

the setting/determining method of subcarrier spacing of reference numerology according to an embodiment of the present invention includes: acquiring a specific downlink signal which is sent by a base station at a specified subcarrier interval in a first reference subframe; determining a transmission bandwidth for transmitting a specific downlink signal and prestored parameters M and N corresponding to the transmission bandwidth, wherein M is the number of resource blocks occupied by the specific downlink signal, and N is the data of the number of subcarriers contained in each resource block; and determining a quotient value obtained by dividing the transmission bandwidth by M and then dividing the transmission bandwidth by N, wherein the quotient value is a subcarrier interval of specific downlink signal transmission, namely a subcarrier interval of reference numerology capable of synchronously communicating with the base station equipment.

As shown in fig. 9, the reference numerology subcarrier spacing setting/determining apparatus 900 according to the embodiment of the present invention includes: an obtaining unit 902, configured to obtain a specific downlink signal sent by a base station at a specified subcarrier interval in a first reference subframe; a determining unit 904, configured to determine a transmission bandwidth used for transmitting the specific downlink signal, and pre-stored parameters M and N corresponding to the transmission bandwidth, where M is the number of resource blocks occupied by the specific downlink signal, and N is data of the number of subcarriers included in each resource block; the determining unit 904 is further configured to: and determining a quotient value obtained by dividing the transmission bandwidth by M and then dividing the transmission bandwidth by N, wherein the quotient value is a subcarrier interval of specific downlink signal transmission, namely a subcarrier interval of reference numerology capable of synchronously communicating with the base station equipment.

As shown in fig. 10, a terminal apparatus 1000 according to an embodiment of the present invention includes: reference numerology subcarrier spacing setting/determining apparatus 900 as defined in any of the previous fifth aspects, wherein terminal device 1000 is in synchronous communication with reference numerology subcarrier spacing setting/determining apparatus 700 as defined in any of the second aspects, for determining a reference numerology subcarrier spacing for synchronous communication with base station device 800 of the third aspect.

The technical solutions of the present invention are described in detail above with reference to the drawings, and in consideration of how to set and/or determine the core technical problem of reference number subcarrier spacing for different users under a unified air interface framework. Therefore, the present invention provides a setting/determining scheme for subcarrier spacing of reference numerology, which indicates the subcarrier spacing of reference numerology of a terminal device through subcarrier spacing occupied by a specific downlink signal or explicit indication information, or characteristic information of a carrier, or dedicated numerology, or a device type of the terminal device and/or a traffic type to be transmitted, so that the terminal device can know the time-frequency resource granularity of uplink and downlink channels, uplink and downlink signals and data, so as to improve the accuracy and reliability of synchronous communication with a base station device.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for setting/determining subcarrier spacing for reference numerology, the method comprising:

setting the subcarrier spacing of reference numerology to 2 KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿThe number of times of the total number of the parts,

wherein n is an integer greater than or equal to-2;

setting a subcarrier interval occupied by a specific downlink signal as reference number, setting a first reference subframe for sending the specific downlink signal, and sending the specific downlink signal at a specified subcarrier interval in the first reference subframe to indicate that the subcarrier interval of the reference number, at which a terminal device can perform synchronous communication with the base station device, is the subcarrier interval for transmitting the specific downlink signal.

2. The method of claim 1, further comprising:

configuring the same reference number subcarrier spacing on the same carrier for all the terminal devices.

3. The method of claim 2, further comprising:

sending system information of the reference numerology subcarrier interval to the terminal device, so as to indicate that the reference numerology subcarrier interval in which the terminal device can perform synchronous communication with the base station device is the subcarrier interval set in the system information.

4. The method of claim 2, further comprising:

setting a reference numerology subcarrier spacing according to the carrier's feature information and transmitting a specific downlink signal on the carrier for the terminal device to determine the reference numerology subcarrier spacing according to the detected carrier's feature information and a pre-stored carrier feature information and reference numerology subcarrier spacing mapping table,

the characteristic information of the carrier comprises carrier frequency points and/or carrier bandwidths.

5. The method of setting/determining subcarrier spacing according to claim 1 or 4, wherein,

6. The method of claim 1, further comprising:

configuring different reference numerology subcarrier intervals for all the terminal devices on the same carrier.

7. The method of claim 6, further comprising:

and sending radio resource control signaling or downlink control signaling to the terminal equipment according to the equipment type of the terminal equipment and/or the service type required to be transmitted so as to semi-statically or dynamically inform the terminal equipment of the subcarrier interval of reference numerology through the radio resource control signaling or the downlink control signaling.

8. The method for setting/determining subcarrier spacing according to claim 1 or 2, further comprising:

after the terminal device determines a reference numerology subcarrier spacing capable of performing synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing, so that the terminal device performs uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

9. The method of claim 8, further comprising:

setting information of the dedicated numerology subcarrier spacing is a relative ratio between the dedicated numerology subcarrier spacing and a reference numerology subcarrier spacing of a terminal, so that the terminal device determines the dedicated numerology subcarrier spacing according to the relative ratio and the reference numerology subcarrier spacing;

or the setting information of the dedicated numerology subcarrier spacing is an absolute value of the dedicated numerology subcarrier spacing.

10. The method of claim 8, further comprising:

according to the subcarrier interval of the dedicated numerology and the second reference subframe, performing uplink and downlink time-frequency resource allocation on the terminal equipment and sending corresponding downlink control signaling to the terminal equipment,

the downlink control signaling is used for setting a first sending time starting position and a sending time length for the terminal equipment to send data through a physical downlink shared channel and/or a physical uplink shared channel.

11. The method of claim 10, wherein said setting/determining of subcarrier spacing for reference numerology,

and when the second reference subframe is a self-contained downlink data transmission subframe, the downlink control signaling is further used for setting a second transmission time starting position of feedback information of a hybrid automatic repeat request service corresponding to the downlink data received by the terminal equipment.

12. The method of claim 10, wherein said setting/determining of subcarrier spacing for reference numerology,

and determining a first offset subframe by adding a position offset to the subframe position of the downlink control signaling, determining a first offset symbol by adding an offset to the symbol position of the downlink control signaling, wherein the first offset symbol in the first offset subframe is the first sending time starting position.

13. The method of claim 11, wherein said setting/determining of subcarrier spacing for reference numerology,

and sending a starting position subframe or an ending position subframe of the downlink data plus an offset to determine a second offset subframe, sending a starting position symbol or an ending position symbol of the downlink data plus an offset to determine a second offset symbol, wherein the second offset symbol in the second offset subframe is the starting position of the second sending time.

14. The method for setting/determining subcarrier spacing according to claim 1, 3 or 4, further comprising:

after the terminal device determines that the subcarrier interval of reference numerology transmits a random access preamble based on the subcarrier interval, receiving and parsing the random access preamble transmitted by the terminal device to realize random access of the terminal device.

15. An apparatus for setting/determining subcarrier spacing for reference numerology, the apparatus comprising:

a setting unit for setting the subcarrier spacing of the reference numerology to 2 KHz of 15KHzⁿMultiplying and informing to the terminal device to indicate that the terminal device is capable of synchronous communication with the base station device at a subcarrier spacing of 2 KHz of 15KHzⁿThe number of times of the total number of the parts,

wherein n is an integer greater than or equal to-2;

informing terminal equipment of 2 of 15KHz subcarrier spacingⁿThe method comprises the following steps:

the setting unit is further configured to: setting a subcarrier interval occupied by a specific downlink signal as reference number, and setting a first reference subframe for transmitting the specific downlink signal, the specific downlink signal being transmitted at a designated subcarrier interval within the first reference subframe.

16. The reference numerology subcarrier spacing setting/determining apparatus of claim 15, wherein,

the setting unit is further configured to: configuring the same reference number subcarrier spacing on the same carrier for all the terminal devices.

17. The apparatus for setting/determining subcarrier spacing according to claim 16, further comprising:

a first sending unit, configured to send, to the terminal device, system information of a reference number subcarrier interval, so as to indicate that the reference number subcarrier interval, at which the terminal device can perform synchronous communication with the base station device, is a subcarrier interval set in the system information.

18. The reference numerology subcarrier spacing setting/determining apparatus of claim 16,

the setting unit is further configured to: setting a reference numerology subcarrier spacing according to the carrier's feature information and transmitting a specific downlink signal on the carrier for the terminal device to determine the reference numerology subcarrier spacing according to the detected feature information of the carrier and a pre-stored carrier feature information and reference numerology subcarrier spacing mapping table,

19. The reference numerology subcarrier spacing setting/determining apparatus of claim 15 or 18,

20. The reference numerology subcarrier spacing setting/determining apparatus of claim 15, wherein,

the setting unit is further configured to: configuring different reference numerology subcarrier intervals for all the terminal devices on the same carrier.

21. The apparatus for setting/determining subcarrier spacing according to claim 20, further comprising:

a second sending unit, configured to send a radio resource control signaling or a downlink control signaling to the terminal device according to the device type of the terminal device and/or the service type that needs to be transmitted, so as to semi-statically or dynamically notify the terminal device of the subcarrier spacing of reference numerology through the radio resource control signaling or the downlink control signaling.

22. The reference numerology subcarrier spacing setting/determining apparatus of claim 15 or 16,

the setting unit is further configured to: after the terminal device determines a reference numerology subcarrier spacing capable of performing synchronous communication with the base station device, setting a dedicated numerology subcarrier spacing of the terminal device, and setting a second reference subframe according to the dedicated numerology subcarrier spacing, so that the terminal device performs uplink and downlink data transceiving according to the dedicated numerology subcarrier spacing and the second reference subframe.

23. The reference numerology subcarrier spacing setting/determining apparatus of claim 22, wherein,

24. The apparatus for setting/determining subcarrier spacing according to claim 22, further comprising:

a third sending unit, configured to perform uplink and downlink time-frequency resource allocation for the terminal device according to the dedicated numerology subcarrier spacing and the second reference subframe, and send a corresponding downlink control signaling to the terminal device,

25. The reference numerology subcarrier spacing setting/determining apparatus of claim 24,

26. The reference numerology subcarrier spacing setting/determining apparatus of claim 24,

27. The reference numerology subcarrier spacing setting/determining apparatus of claim 25,

28. The apparatus for setting/determining subcarrier spacing according to any of claims 15, 17 and 18, further comprising:

an accessing unit, configured to receive and parse a random access preamble sent by the terminal device to implement random access of the terminal device after the terminal device determines that the subcarrier spacing of reference numerology sends the random access preamble based on the subcarrier spacing.

29. A base station apparatus, comprising:

means for setting/determining the subcarrier spacing of reference numerology according to any one of claims 15 to 28.

30. A method for setting/determining subcarrier spacing for reference numerology, comprising:

acquiring a specific downlink signal which is sent by a base station at a specified subcarrier interval in a first reference subframe;

determining a transmission bandwidth for transmitting the specific downlink signal and prestored parameters M and N corresponding to the transmission bandwidth, wherein M is the number of resource blocks occupied by the specific downlink signal, and N is data of the number of subcarriers included in each resource block;

determining a quotient of the transmission bandwidth divided by the M and divided by the N, where the quotient is a subcarrier interval of the specific downlink signal transmission, that is, a subcarrier interval of reference numerology capable of performing synchronous communication with the base station device;

the transmission bandwidth is (MxNx15 x 2)ⁿ）KHz。

31. The method of claim 30, wherein said setting/determining of subcarrier spacing according to reference numerology,

32. An apparatus for setting/determining subcarrier spacing of reference numerology, comprising:

an obtaining unit, configured to obtain a specific downlink signal sent by a base station at a specified subcarrier interval within a first reference subframe;

a determining unit, configured to determine a transmission bandwidth used for transmitting the specific downlink signal, and prestored parameters M and N corresponding to the transmission bandwidth, where M is the number of resource blocks occupied by the specific downlink signal, and N is data of the number of subcarriers included in each resource block;

the determination unit is further configured to: determining a quotient of the transmission bandwidth divided by the M and divided by the N, where the quotient is a subcarrier interval of the specific downlink signal transmission, that is, a subcarrier interval of reference numerology capable of performing synchronous communication with the base station device;

the transmission bandwidth is (MxNx15 x 2)ⁿ）KHz。

33. The reference numerology subcarrier spacing setting/determining apparatus of claim 32,

34. A terminal device, comprising:

the reference numerology subcarrier spacing setting/determining apparatus of claim 32 or 33,

wherein the terminal device is in synchronous communication with the reference numerology subcarrier spacing setting/determining apparatus of any of claims 15 to 28 to determine the reference numerology subcarrier spacing in synchronous communication with the base station device of claim 29.