CN106792719B - Air interface frame structure frame and configuration method thereof, and base station - Google Patents

Air interface frame structure frame and configuration method thereof, and base station Download PDF

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CN106792719B
CN106792719B CN201610204101.XA CN201610204101A CN106792719B CN 106792719 B CN106792719 B CN 106792719B CN 201610204101 A CN201610204101 A CN 201610204101A CN 106792719 B CN106792719 B CN 106792719B
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sub
band
bands
system bandwidth
frequency
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CN106792719A (en
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徐伟杰
周化雨
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Spreadtrum Hi Tech Communications Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0041—Frequency-non-contiguous
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0076—Allocation utility-based
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

An air interface frame structure frame and a configuration method thereof, a base station, the configuration method includes: at least two sub-bands are configured in a system bandwidth, each sub-band corresponds to a carrier parameter, and the sub-bands are communicated with terminals corresponding to the carrier parameters at the frequency band positions of the sub-bands; and controlling the frequency band positions of the at least two sub-bands to jump in corresponding time periods. The scheme can realize the transmission of various types of services in the system bandwidth.

Description

Air interface frame structure frame and configuration method thereof, and base station
Technical Field
The present invention relates to the field of wireless communications, and in particular, to an air interface frame structure frame, a configuration method thereof, and a base station.
Background
With the continuous forward evolution of wireless communication technology, the requirements on the capacity, transmission rate and the like of mobile data are higher and higher, and the emerging services of the internet of things, the internet of vehicles, the mobile internet and the like provide new and diversified requirements for the design of a communication system. The fifth generation mobile communication technology (5G) arose.
Third generation partnership project (3)rdGeneration Partnership Project, 3GPP) put explicit scene requirements on the 5G new air interface technology: the 5G new air interface technology needs to support service requirements of three different scenarios, namely mobile broadband enhancement (eMBB), large-scale machine type Communication (massive MTC), and low-Latency high-reliability Communication (URLLC), in the same frame structure framework. The frame structure and waveform parameters corresponding to the three service requirements are different.
Disclosure of Invention
The technical problem solved by the invention is how to transmit various types of services in the system bandwidth.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for configuring an air interface frame structure frame, where the method includes: at least two sub-bands are configured in a system bandwidth, each sub-band corresponds to a carrier parameter, and the sub-bands are communicated with terminals corresponding to the carrier parameters at the frequency band positions of the sub-bands; and controlling the frequency band positions of the at least two sub-bands to jump in corresponding time periods.
Optionally, a guard band is configured between the at least two sub-bands.
Optionally, the subbands configured in the system bandwidth include at least two of the following: a first sub-band used for transmitting the service type of mobile broadband enhancement; a second sub-band for transmitting the large-scale machine type communication service type; and the third sub-band is used for transmitting the communication with the low time delay and high reliability.
Optionally, when three sub-bands are configured in the system bandwidth, the first sub-band is configured between the second sub-band and the third sub-band.
Optionally, a first guard band is configured between the first sub-band and the second sub-band; a second guard band is configured between the first sub-band and the third sub-band.
Optionally, the controlling the frequency band position hopping of the at least two sub-bands includes: and controlling the relative position relation of the frequency band positions of the at least two sub-bands to change in the system bandwidth.
Optionally, when three sub-bands are configured in the system bandwidth, the controlling of the relative position relationship between the frequency band positions of the at least two sub-bands includes: and controlling the frequency band position of the second sub-band to be exchanged with the frequency band position of the third sub-band in the system bandwidth, and controlling the relative position of the frequency band position of the first sub-band to be kept unchanged.
Optionally, the second sub-band or the third sub-band includes multiple carriers, and after the frequency band position of the second sub-band or the third sub-band hops, the relative positions of the multiple carriers in the second sub-band or the third sub-band remain unchanged.
Optionally, the second sub-band or the third sub-band includes multiple carriers, and after the frequency band of the second sub-band or the third sub-band is hopped, the relative positions of the multiple carriers in the second sub-band or the third sub-band and the central frequency point of the system bandwidth before hopping are in a mirror symmetry relationship.
Optionally, the corresponding time period includes an odd cycle and an even cycle.
Optionally, when a synchronization channel exists in the second sub-band or the third sub-band, the synchronization channel is configured to be transmitted only in the odd cycles, or the synchronization channel is configured to be transmitted only in the even cycles.
Optionally, when a primary broadcast channel exists in the second sub-band or the third sub-band, the primary broadcast channel is configured to be transmitted only in the odd-numbered periods, or the primary broadcast channel is configured to be transmitted only in the even-numbered periods.
Optionally, the main broadcast channel carries indication information, where the indication information is used to identify whether the frequency band positions of the at least two current sub-bands change.
An embodiment of the present invention provides a base station, including: a configuration unit, configured to configure at least two sub-bands in a system bandwidth, where each sub-band corresponds to a carrier parameter, and communicates with a terminal corresponding to the carrier parameter at a frequency band position of the sub-band; and the hopping control unit is used for controlling the frequency band positions of the at least two sub-bands to hop in the corresponding time period.
Optionally, the configuration unit is configured to configure a guard band between the at least two sub-bands.
Optionally, the sub-bands configured by the configuration unit in the system bandwidth include at least two of the following: a first sub-band used for transmitting the service type of mobile broadband enhancement; a second sub-band for transmitting the large-scale machine type communication service type; and the third sub-band is used for transmitting the communication with the low time delay and high reliability.
Optionally, the configuration unit is configured to: and configuring three sub-bands in the system bandwidth, wherein the first sub-band is configured between the second sub-band and the third sub-band.
Optionally, the configuration unit is configured to: configuring a first guard band between the first sub-band and the second sub-band; configuring a second guard band between the first sub-band and the third sub-band.
Optionally, the jump control unit is configured to: and controlling the relative position relation of the frequency band positions of the at least two sub-bands to change in the system bandwidth.
Optionally, the jump control unit is configured to: when three sub-bands are configured in the system bandwidth, the frequency band position of the second sub-band is controlled to be exchanged with the frequency band position of the third sub-band, and the relative position of the frequency band position of the first sub-band is controlled to be kept unchanged.
Optionally, the jump control unit is configured to: when the second sub-band or the third sub-band comprises a plurality of carriers, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be unchanged after hopping of the frequency band position of the second sub-band or the third sub-band.
Optionally, the jump control unit is configured to: when the second sub-band or the third sub-band comprises a plurality of carriers, after the frequency band position of the second sub-band or the third sub-band is hopped, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be in mirror symmetry with the central frequency point relative to the system bandwidth before hopping.
Optionally, the corresponding time period includes an odd cycle and an even cycle.
Optionally, the configuration unit is configured to: and when a synchronous channel exists in the second sub-band or the third sub-band, configuring the synchronous channel to be transmitted only in the odd cycles, or configuring the synchronous channel to be transmitted only in the even cycles.
Optionally, the configuration unit is configured to: configuring the primary broadcast channel to transmit only in the odd cycles or configuring the primary broadcast channel to transmit only in the even cycles when a primary broadcast channel is present in the second sub-band or the third sub-band.
Optionally, the main broadcast channel carries indication information, where the indication information is used to identify whether the frequency band positions of the at least two current sub-bands change.
An embodiment of the present invention further provides an air interface frame structure frame, including: at least two sub-bands in the system bandwidth, wherein each sub-band corresponds to a carrier parameter; the frequency band positions of the at least two sub-bands hop within the corresponding time period.
Optionally, a guard band is disposed between the at least two sub-bands.
Optionally, the sub-bands in the system bandwidth include at least two of the following: the system comprises a first sub-band used for transmitting mobile broadband enhancement, a second sub-band used for transmitting large-scale machine type communication and a third sub-band used for transmitting low-delay high-reliability communication.
Optionally, the system bandwidth includes the first sub-band, the second sub-band, and the third sub-band, where: the first sub-band is disposed between the second sub-band and the third sub-band.
Optionally, a first guard band is configured between the first sub-band and the second sub-band; a second guard band is configured between the first sub-band and the third sub-band.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
at least two sub-bands are configured in the system bandwidth, each sub-band corresponds to one carrier parameter, each carrier parameter corresponds to one service type, so that the sub-bands for transmitting the two service types can be configured in the system bandwidth, and multiple types of services can be transmitted in the same system bandwidth. The frequency hopping gain can be obtained by controlling the frequency band positions of at least two sub-bands to hop, and the transmission efficiency is improved. In addition, the hopping of the frequency band position is carried out by taking the sub-band as a unit, and extra interference is not increased.
Drawings
Fig. 1 is a flowchart of a configuration method of a frame structure frame of an air interface in an embodiment of the present invention;
fig. 2 is a schematic diagram of frequency band division of a system bandwidth in an embodiment of the present invention;
FIG. 3 is a diagram illustrating frequency band location hopping of a sub-band in an embodiment of the present invention;
FIG. 4 is a diagram illustrating band position hopping of sub-bands in an embodiment of the present invention;
FIG. 5 is a schematic diagram of frequency band location hopping of a further sub-band in an embodiment of the present invention;
FIG. 6 is a schematic diagram of frequency band location hopping of a further sub-band in an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a base station in an embodiment of the present invention.
Detailed Description
In 5G, the 5G new air interface uses an Orthogonal Frequency Division Multiplexing (OFDM) waveform or a new waveform modified based on the OFDM waveform. For service requirements of three different scenarios, namely eMBB, massive MTC and URLLC, due to different requirements on transmission rate, different types of terminals and different moving speeds, the requirements on carrier parameters such as subcarrier spacing, symbol length and the like are also different.
For example, the main requirement of the eMBB service is data transmission in ultra-high-speed broadband, and the service transmission delay is also greatly reduced compared to LTE. Accordingly, if an OFDM waveform or the like is employed, a subcarrier slightly wider than 3GPP release 8LTE and a shorter symbol length are required.
The main requirement of URLLC service is the ultra-high reliability of data transmission (10)-5Error transmission probability of/ms) and ultra-low end-to-end transmission delay (e.g., 1ms end-to-end transmission delay). Accordingly, URLLC requires a shorter symbol length and a wider subcarrier spacing than eMBB.
For the massive MTC service, the main requirements are to support the number of terminal connections with large capacity, the terminal design with low cost or even ultra-low cost, and the transmission technology with low power consumption, and the terminal is insensitive to the transmission delay. Accordingly, the massive MTC transmission requires a longer symbol length and a narrower subcarrier spacing than the eMBB, and a narrower terminal bandwidth (for example, only 1.4MHz bandwidth) is also designed for the massive MTC transmission to reduce the cost of the terminal and the power consumption during the transmission.
In the embodiment of the invention, at least two sub-bands are configured in the system bandwidth, each sub-band corresponds to one carrier parameter, and each carrier parameter corresponds to one service type, so that the sub-bands for transmitting the two service types can be configured in the system bandwidth, and multiple types of services can be transmitted in the same system bandwidth. The frequency hopping gain can be obtained by controlling the frequency band positions of at least two sub-bands to hop, and the transmission efficiency is improved. In addition, the hopping of the frequency band position is carried out by taking the sub-band as a unit, and extra interference is not increased.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
An embodiment of the present invention provides a method for configuring a frame structure frame of an air interface, which is described in detail below with reference to fig. 1 through specific steps.
Step S101, at least two sub-bands are configured in the system bandwidth.
In an implementation, each sub-band may correspond to a carrier parameter, and each carrier parameter may correspond to a service type. It should be noted that the carrier parameters described in the embodiments of the present invention are numerology.
In practical application, the carrier parameters may be divided into three types, which are a first carrier parameter supporting the eMBB, a second carrier parameter supporting the massive MTC, and a third carrier parameter supporting the URLLC in sequence. Each carrier parameter may include at least one of the following parameters: the specific values in each carrier parameter are different, namely: the specific parameters in the first carrier parameters may be different from the specific parameters in the second carrier parameters and the third carrier parameters.
In the embodiment of the present invention, the subbands supporting the carrier parameters of three service types may be sequentially divided into a first subband, a second subband, and a third subband, where: the first sub-band is used for transmitting data of an eMBB service type, the second sub-band is used for transmitting data of a massive MTC service type, and the third sub-band is used for transmitting data of a URLLC service type.
After configuring at least two sub-bands in the system bandwidth, the base station can communicate with the terminal corresponding to the carrier parameter at the frequency band position of the sub-band. For example, if the base station configures the first sub-band in the system bandwidth, the base station may communicate with a terminal (that is, an eMBB terminal) corresponding to the first type of carrier parameter at the frequency band position of the first sub-band.
In practical application, the base station may include, according to different service requirements, only any two of the first sub-band, the second sub-band, and the third sub-band configured in the system bandwidth. For example, the base station configures only a first sub-band and a second sub-band within the system bandwidth. As another example, the base station configures the three subbands simultaneously in the system bandwidth.
In the embodiment of the present invention, when three subbands are configured in the system bandwidth, that is, a first subband, a second subband, and a third subband are configured in the system bandwidth, the following relationships are satisfied between the three subbands: the first sub-band is configured between the second sub-band and the third sub-band.
In a specific implementation, guard bands may be configured between the first sub-band and the second sub-band and between the first sub-band and the third sub-band. For example, a first guard band is configured between the first sub-band and the second sub-band, and a second guard band is configured between the first sub-band and the third sub-band.
It is to be understood that when the base station configures two sub-bands within the system bandwidth, a guard band may also be configured between the two sub-bands. Whether to set the guard band may be set by itself according to an actual application scenario, which is not described herein.
When two kinds of subbands are configured in the system bandwidth, one of the two kinds of subbands is disposed on a high-band side of the system bandwidth, and the other kind of subband is disposed on a low-band side of the system bandwidth. When the types of the sub-bands configured in the system bandwidth are 3, the second sub-band may be set on the high-frequency band side of the system bandwidth, and the third sub-band may be set on the low-frequency band side of the system bandwidth; the second sub-band may be disposed on the low-band side of the system bandwidth, and the third sub-band may be disposed on the high-band side of the system bandwidth. Wherein, the high-frequency band side means: within the system bandwidth, the frequency band with the minimum frequency value larger than the maximum frequency values of other frequency bands; the low band side means: and within the system bandwidth, the maximum frequency value is smaller than the frequency value of the minimum frequency of other frequency bands.
Referring to fig. 2, a schematic diagram of frequency band division of a system bandwidth in an embodiment of the present invention is provided, a sub-band of three carrier parameters is configured in the system bandwidth, and a frequency value of each frequency band increases along a y-axis direction.
The first sub-band 201 is disposed between the second sub-band 202 and the third sub-band 203, a first guard band 204 is disposed between the first sub-band 201 and the second sub-band 202, and a second guard band 205 is disposed between the first sub-band 201 and the third sub-band 203. The second sub-band 202 is at the low frequency side of the system bandwidth, i.e. the maximum frequency value of the second sub-band 202 is smaller than the minimum frequency value of the first sub-band 201; the third sub-band 203 is on the high frequency side of the system bandwidth, i.e. the minimum frequency value of the third sub-band 203 is larger than the maximum frequency value of the first sub-band 201.
The bandwidth of the first guard band 204 and the bandwidth of the second guard band 205 may or may not be equal. In a specific implementation, the specific bandwidth of the first guard band 204 and the specific bandwidth of the second guard band 205 may be calculated according to actual requirements.
In practical applications, a guard band 206 may further exist outside the third sub-band 203, a guard band 207 may further exist outside the second sub-band 202, and the guard band 206 and the guard band 207 are guard bands set in a system bandwidth, so that interference between the system bandwidth and other system bandwidths may be avoided.
And step S102, controlling the frequency band positions of the at least two sub-bands to jump in a corresponding time period.
In a specific implementation, the base station may control the frequency band locations of the at least two sub-bands to hop within different time periods. The base station can control the frequency band positions of at least two sub-bands to hop periodically, and can also control the frequency band positions of at least two sub-bands to hop aperiodically. The same hopping time table can be preset at the base station side and the terminal side respectively, and the base station carries out hopping control on the frequency band position of the sub-band according to the hopping time point in the hopping time table.
The frequency hopping gain can be obtained by controlling the frequency band positions of at least two sub-bands to hop in different time periods, and the transmission efficiency of the system is improved. And hopping of frequency positions is carried out by taking a sub-band as a unit, so that additional interference is not introduced.
In this embodiment of the present invention, controlling the frequency band positions of at least two sub-bands within the system bandwidth to jump within the corresponding time period refers to: the relative position relationship of the frequency band positions of at least two sub-bands in the system bandwidth is changed, but not the bandwidth of the sub-bands is changed, that is, the bandwidth of the sub-bands can be kept unchanged in the hopping process.
It can be understood that, if the bandwidth of the sub-band is adjusted during the hopping process, the bandwidth of the sub-band after hopping changes accordingly. For example, if the bandwidth of the second sub-band is increased during the hopping process, the bandwidth of the second sub-band is increased after the hopping process.
When two sub-bands are configured in the system bandwidth, the band position hopping of the control sub-band may be: the frequency band positions of two sub-bands are exchanged in the system bandwidth, namely: adjusting the sub-band at the high frequency band side to the low frequency band side; accordingly, the sub-band on the low band side is tuned to the high band side.
For example, a first sub-band and a second sub-band are configured in the system bandwidth, wherein the frequency band position of the first sub-band is on the high frequency band side of the system bandwidth, and the frequency band position of the second sub-band is on the low frequency band side of the system bandwidth. The band position hopping of the control sub-band becomes: the band position of the first sub-band is adjusted to the low band side, and the band position of the second sub-band is adjusted to the high band side.
When three sub-bands are configured in the system bandwidth, the frequency band position hopping of the control sub-band may be: and keeping the frequency band position of the first sub-band unchanged, and controlling the frequency band position of the second sub-band to be exchanged with the frequency band position of the third sub-band. It is understood that the band position hopping of the control sub-bands can also be: the band positions of the three sub-bands are controlled to be changed.
In the embodiment of the present invention, the corresponding time period may include an odd cycle and an even cycle, and the frequency band position of the sub-band may be controlled to hop in the odd cycle and in the even cycle, respectively.
Referring to fig. 3, a schematic diagram of frequency band position hopping of a sub-band in an embodiment of the present invention is shown. Three sub-bands are configured in the system bandwidth, namely a first sub-band, a second sub-band and a third sub-band in sequence; t 0-t 1 are the first jump period, namely the odd number period; t is t1～t2The second transition period, namely the even period; t is t2～t3The third jump period, i.e., the odd period.
Excluding guard bands (gray boxes in fig. 3) set in the system bandwidth, the relative position relationship of the band positions of the first sub-band, the second sub-band, and the third sub-band in the first hopping period is: the first sub-band is between a second sub-band on a low band side of the system bandwidth and a third sub-band on a high band side of the system bandwidth.
In the second hopping period, the relative position of the frequency band position of the first sub-band still between the second sub-band and the third sub-band after hopping is kept unchanged; the band position of the second sub-band is adjusted from the low band side to the high band side, and the band position of the third sub-band is adjusted from the high band side to the low band side.
And in the third hopping period, hopping occurs in the frequency band positions of the three sub-bands. And the relative position relation among the first sub-band, the second sub-band and the third sub-band in the third hopping period is the same as that in the first hopping period.
In other embodiments of the present invention, three sub-bands are configured in the system bandwidth, and in each hopping period, the relative position relationship of the three sub-bands may also change.
Referring to fig. 4, a schematic diagram of frequency band position hopping of another sub-band in an embodiment of the present invention is provided, which is described in conjunction with fig. 3.
In the first transition period (t)0～t1) The relative position relationship of the frequency band positions of the first sub-band, the second sub-band and the third sub-band is as follows: the first sub-band is between a second sub-band on a low band side of the system bandwidth and a third sub-band on a high band side of the system bandwidth.
At the second transition period (t)1～t2) After hopping, the frequency band position of the first sub-band is adjusted to the high frequency band side, the frequency band position of the third sub-band is adjusted to the low frequency band side, and the second sub-band is located between the first sub-band and the third sub-band.
In the third jump period (t)2～t3) After hopping, the frequency band position of the first sub-band is adjusted to the low frequency band side, the frequency band position of the second sub-band is adjusted to the high frequency band side, and the frequency band position of the third sub-band is located between the first sub-band and the second sub-band.
It can be understood that, in practical application, there may also be other adjustment strategies to adjust the relative position relationship of the frequency band positions of the first sub-band, the second sub-band, and the third sub-band, which is not described herein again.
As can be seen from fig. 3 to fig. 4, the change of the frequency band positions of the first sub-band, the second sub-band, and the third sub-band substantially means that the frequency band occupied by each sub-band changes, but the bandwidth corresponding to each sub-band does not change with the hopping, that is, the bandwidth of each sub-band does not change with the hopping.
In practical application, the second sub-band is mainly used for transmission of a massive MTC service, and the third sub-band is mainly used for transmission of a URLLC service. Therefore, in either the second subband or the third subband, a plurality of carriers may be configured. When a plurality of carriers are configured in the second sub-band or the third sub-band, when the frequency band position of the second sub-band or the third sub-band hops, the position of the carrier in the second sub-band or the third sub-band may also change correspondingly.
In the embodiment of the present invention, if the second sub-band includes multiple carriers, after the frequency band position of the second sub-band is hopped, the relative positions of the multiple carriers in the second sub-band may be kept unchanged, or may form a mirror image with respect to the central position before hopping. Accordingly, if the third sub-band includes multiple carriers, after the frequency band position of the third sub-band is hopped, the relative positions of the multiple carriers in the third sub-band may be kept unchanged, or may form a mirror relationship with the central position before hopping.
Next, when there are multiple carriers in the second sub-band and the third sub-band, the distance between the carriers before and after hopping will be described.
Referring to fig. 5, a schematic diagram of frequency band position hopping of a sub-band in an embodiment of the present invention is shown. A first sub-band 501, a second sub-band 502 and a third sub-band 503, t are configured in the system bandwidth0～t1Is the first transition period, t1～t2Is the second transition period. Carrier 5021, carrier 5022, carrier 5023, and carrier 5024 are included in the second subband 502 and carrier 5031, carrier 5032, carrier 5033, and carrier 5034 are included in the third subband 503.
Excluding guard bands (gray boxes in fig. 5) set in the system bandwidth, the relative position relationship of the band positions of the first sub-band 501, the second sub-band 502 and the third sub-band 503 in the first hopping period is: the first sub-band 501 is between a second sub-band 502 and a third sub-band 503, the second sub-band 502 is on the low band side of the system bandwidth, and the third sub-band 503 is on the high band side of the system bandwidth.
The position relationship of the 4 carriers in the second subband 502 is carrier 5024 on carrier 5023, carrier 5023 on carrier 5022, and carrier 5022 on carrier 5021.
During the second hopping period, the first sub-band 501 is still between the second sub-band 502 and the third sub-band 503 after hopping. At this time, the positional relationship of the 4 carriers in the second subband 502 is still: carrier 5034 is on carrier 5033, carrier 5033 is on carrier 5032, and carrier 5032 is on carrier 5031. That is, the relative positions of the multiple carriers in the second sub-band 502 remain unchanged.
Accordingly, in fig. 5, in the first hopping period, the position relationship of the 4 carriers in the third sub-band 503 is: carrier 5031 is on carrier 5032, carrier 5032 is on carrier 5033, and carrier 5033 is on carrier 5034. In the second hopping period, after hopping, the position relationship of the 4 carriers in the third sub-band 503 is still: carrier 5031 is on carrier 5032, carrier 5032 is on carrier 5033, and carrier 5033 is on carrier 5034. Namely: the relative positions of the multiple carriers in the third sub-band 503 remain unchanged.
In fig. 5, the frequency spacing between the multiple carriers of the second sub-band 502 and the third sub-band 503 before and after hopping remains unchanged, so that uniform frequency hopping performance of the multiple carriers can be obtained.
Referring to fig. 6, a schematic diagram of frequency band position hopping of another sub-band in an embodiment of the present invention is shown. Unlike fig. 5, in the second hopping period, the positional relationship of 4 carriers in the second sub-band 502 becomes: carrier 5021 is on carrier 5022, carrier 5022 is on carrier 5023, and carrier 5023 is on carrier 5024; the position relationship of the 4 carriers in the third subband 503 is: carrier 5034 is on carrier 5033, carrier 5033 is on carrier 5032, and carrier 5032 is on carrier 5031.
That is, in fig. 6, after hopping, the positional relationship of the plurality of carriers in the second sub-band 502 and the third sub-band 503 is mirror-symmetrical with respect to the center frequency point of the system bandwidth compared to before hopping.
In a specific implementation, when the frequency band position of the sub-band controlled by the base station hops, if the synchronization channel is transmitted in the second sub-band or the third sub-band for the terminal to obtain the time-frequency synchronization with the base station and the cell search function, the time for transmitting the synchronization channel may be limited to an odd cycle or an even cycle, that is: the second sub-band or the third sub-band transmits the synchronization channel only in odd cycles, and does not transmit the synchronization channel in even cycles; alternatively, the second or third sub-band transmits the synchronization channel only in even periods, and does not transmit the synchronization channel in odd periods.
As can be seen from the above-described embodiments of the present invention, the relative positional relationship between the band positions of the respective sub-bands is kept constant at different odd-numbered periods. The time for transmitting the synchronization channel is limited to the odd cycle or the even cycle, so that the transmission band position of the synchronization channel can be kept unchanged.
The base station may agree with the terminal to transmit the synchronization channel only in odd cycles or only in even cycles. Therefore, after receiving the synchronization channel, the terminal can know whether the current time is in the odd cycle or the even cycle. The synchronous channel is limited to be transmitted only in the odd cycle or the even cycle, which is beneficial to the synchronous operation of the terminal and the cell detection operation.
The base station may agree with the terminal to transmit the synchronization channel only on the high band side or the low band side. Thus, after receiving the synchronization channel, the base station can know whether the sub-band is located on the high frequency band side or the low frequency band side in the system bandwidth.
In a specific implementation, if the primary broadcast channel needs to be transmitted in the second sub-band and/or the third sub-band, the time for transmitting the primary broadcast channel may be limited to an odd cycle or an even cycle, that is: the second sub-band or the third sub-band transmits the main broadcast channel only in odd-numbered periods, and does not transmit the main broadcast channel in even-numbered periods; alternatively, the second sub-band or the third sub-band transmits the main broadcast channel only in even periods, and does not transmit the main broadcast channel in odd periods.
In the embodiment of the present invention, the indication information may be carried in the primary broadcast channel, and the indication information may be used to indicate whether the base station controls the frequency band position of each sub-band to change, that is, to inform the terminal whether the frequency band position of each sub-band in the current system bandwidth changes.
In an embodiment of the present invention, a bit is set in a Master Information Block (MIB) as the indication Information. When the bit is 1, indicating that the base station controls the frequency band position of each sub-band to change; when the bit is 0, it indicates that the base station does not control the frequency band position of each sub-band to change.
Referring to fig. 7, a base station 70 in the embodiment of the present invention is provided, including: a configuration unit 701 and a jump control unit 702, wherein:
a configuration unit 701, configured to configure at least two sub-bands in a system bandwidth, where each sub-band corresponds to a carrier parameter, and communicates with a terminal corresponding to the carrier parameter at a frequency band position of the sub-band;
a hopping control unit 702, configured to control the frequency band positions of the at least two sub-bands to hop within corresponding time periods.
In a specific implementation, the configuring unit 701 may be configured to configure a guard band between the at least two sub-bands.
In a specific implementation, the subbands configured by the configuration unit 701 in the system bandwidth may include at least two of the following: a first sub-band used for transmitting the service type of mobile broadband enhancement; a second sub-band for transmitting the large-scale machine type communication service type; and the third sub-band is used for transmitting the communication with the low time delay and high reliability.
In a specific implementation, the configuration unit 701 may be configured to: and configuring three sub-bands in the system bandwidth, wherein the first sub-band is configured between the second sub-band and the third sub-band.
In a specific implementation, the configuration unit 701 may be configured to: configuring a first guard band between the first sub-band and the second sub-band; configuring a second guard band between the first sub-band and the third sub-band.
In a specific implementation, the jump control unit 702 may be configured to: and controlling the relative position relation of the frequency band positions of the at least two sub-bands to change in the system bandwidth.
In a specific implementation, the jump control unit 702 may be configured to: when three sub-bands are configured in the system bandwidth, the frequency band position of the second sub-band is controlled to be exchanged with the frequency band position of the third sub-band, and the relative position of the frequency band position of the first sub-band is controlled to be kept unchanged.
In a specific implementation, the jump control unit 702 may be configured to: when the second sub-band or the third sub-band comprises a plurality of carriers, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be unchanged after hopping of the frequency band position of the second sub-band or the third sub-band.
In a specific implementation, the jump control unit 702 may be configured to: when the second sub-band or the third sub-band comprises a plurality of carriers, after the frequency band position of the second sub-band or the third sub-band is hopped, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be in mirror symmetry with the central frequency point relative to the system bandwidth before hopping.
In a specific implementation, the corresponding time period includes an odd cycle and an even cycle.
In a specific implementation, the configuration unit 701 may be configured to: and when a synchronous channel exists in the second sub-band or the third sub-band, configuring the synchronous channel to be transmitted only in the odd cycles, or configuring the synchronous channel to be transmitted only in the even cycles.
In a specific implementation, the configuration unit 701 may be configured to: configuring the primary broadcast channel to transmit only in the odd cycles or configuring the primary broadcast channel to transmit only in the even cycles when a primary broadcast channel is present in the second sub-band or the third sub-band.
In a specific implementation, the primary broadcast channel carries indication information, where the indication information is used to identify whether the frequency band positions of the at least two current sub-bands change.
An embodiment of the present invention further provides an air interface frame structure frame, including: at least two sub-bands in the system bandwidth, wherein each sub-band corresponds to a carrier parameter; the frequency band positions of the at least two sub-bands hop within the corresponding time period.
In a specific implementation, a guard band may be disposed between the at least two sub-bands.
In a particular implementation, the subbands in the system bandwidth may include at least two of: the system comprises a first sub-band used for transmitting mobile broadband enhancement, a second sub-band used for transmitting large-scale machine type communication and a third sub-band used for transmitting low-delay high-reliability communication.
In a specific implementation, the system bandwidth may include the first sub-band, the second sub-band, and the third sub-band, where: the first sub-band is disposed between the second sub-band and the third sub-band.
In a specific implementation, a first guard band may be configured between the first sub-band and the second sub-band; a second guard band may be configured between the first sub-band and the third sub-band.
In a specific implementation, the specific architecture and configuration method of the air interface frame structure frame may refer to the configuration method of the air interface frame structure frame provided in the foregoing embodiment of the present invention, which is not described herein again.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (20)

1. A configuration method of an air interface frame structure frame is characterized by comprising the following steps:
at least two sub-bands are configured in a system bandwidth, each sub-band corresponds to a carrier parameter, and the sub-bands are communicated with terminals corresponding to the carrier parameters at the frequency band positions of the sub-bands; the sub-bands configured within the system bandwidth include at least two of: a first sub-band used for transmitting the service type of mobile broadband enhancement; a second sub-band for transmitting the large-scale machine type communication service type; a third sub-band for transmitting the low-delay high-reliability communication service type;
controlling the frequency band positions of the at least two sub-bands to jump in corresponding time periods;
the corresponding time period comprises an odd cycle and an even cycle; and when a synchronous channel exists in the second sub-band or the third sub-band, configuring the synchronous channel to be transmitted only in the odd cycles, or configuring the synchronous channel to be transmitted only in the even cycles.
2. The method for configuring an air interface frame structure frame according to claim 1, wherein a guard band is configured between the at least two sub-bands.
3. The method for configuring an air interface frame structure frame according to claim 1, wherein when three subbands are configured in the system bandwidth, the first subband is configured between the second subband and the third subband.
4. The method according to claim 3, wherein a first guard band is configured between the first sub-band and the second sub-band; a second guard band is configured between the first sub-band and the third sub-band.
5. The method for configuring an air interface frame structure frame according to claim 1, wherein the controlling the frequency band position hopping of the at least two sub-bands comprises:
and controlling the relative position relation of the frequency band positions of the at least two sub-bands to change in the system bandwidth.
6. The method according to claim 5, wherein when three subbands are configured in the system bandwidth, the controlling of changing the relative position relationship between the band positions of the at least two subbands includes:
and controlling the frequency band position of the second sub-band to be exchanged with the frequency band position of the third sub-band in the system bandwidth, and controlling the relative position of the frequency band position of the first sub-band to be kept unchanged.
7. The configuration method of an air interface frame structure frame according to claim 5, wherein the second sub-band or the third sub-band includes multiple carriers, and when a frequency band position of the second sub-band or the third sub-band hops, a relative position of the multiple carriers in the second sub-band or the third sub-band remains unchanged.
8. The configuration method of an air interface frame structure frame according to claim 5, wherein the second sub-band or the third sub-band includes multiple carriers, and after the frequency band position of the second sub-band or the third sub-band is hopped, the relative positions of the multiple carriers in the second sub-band or the third sub-band and the central frequency point of the system bandwidth before hopping are in a mirror symmetry relationship.
9. The method for configuring an air interface frame structure frame according to claim 1, wherein when a primary broadcast channel exists in the second sub-band or the third sub-band, the primary broadcast channel is configured to transmit only in the odd-numbered periods, or the primary broadcast channel is configured to transmit only in the even-numbered periods.
10. The method for configuring an air interface frame structure frame according to claim 9, wherein the primary broadcast channel carries indication information, and the indication information is used to identify whether frequency band positions of the at least two current sub-bands change.
11. A base station, comprising:
a configuration unit, configured to configure at least two sub-bands in a system bandwidth, where each sub-band corresponds to a carrier parameter, and communicates with a terminal corresponding to the carrier parameter at a frequency band position of the sub-band; the sub-bands configured within the system bandwidth include at least two of: a first sub-band used for transmitting the service type of mobile broadband enhancement; a second sub-band for transmitting the large-scale machine type communication service type;
a third sub-band for transmitting the low-delay high-reliability communication service type;
a hopping control unit, configured to control the frequency band positions of the at least two sub-bands to hop within a corresponding time period;
the corresponding time period comprises an odd cycle and an even cycle; the configuration unit is configured to configure the synchronization channel to transmit only in the odd cycles or configure the synchronization channel to transmit only in the even cycles when the synchronization channel exists in the second sub-band or the third sub-band.
12. The base station of claim 11, wherein the configuration unit is configured to configure a guard band between the at least two sub-bands.
13. The base station of claim 11, wherein the configuration unit is configured to: and configuring three sub-bands in the system bandwidth, wherein the first sub-band is configured between the second sub-band and the third sub-band.
14. The base station of claim 13, wherein the configuration unit is configured to: configuring a first guard band between the first sub-band and the second sub-band; configuring a second guard band between the first sub-band and the third sub-band.
15. The base station of claim 11, wherein the hopping control unit is to: and controlling the relative position relation of the frequency band positions of the at least two sub-bands to change in the system bandwidth.
16. The base station of claim 15, wherein the hopping control unit is to: when three sub-bands are configured in the system bandwidth, the frequency band position of the second sub-band is controlled to be exchanged with the frequency band position of the third sub-band, and the relative position of the frequency band position of the first sub-band is controlled to be kept unchanged.
17. The base station of claim 15, wherein the hopping control unit is to: when the second sub-band or the third sub-band comprises a plurality of carriers, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be unchanged after hopping of the frequency band position of the second sub-band or the third sub-band.
18. The base station of claim 15, wherein the hopping control unit is to: when the second sub-band or the third sub-band comprises a plurality of carriers, after the frequency band position of the second sub-band or the third sub-band is hopped, controlling the relative positions of the plurality of carriers in the second sub-band or the third sub-band to be in mirror symmetry with the central frequency point relative to the system bandwidth before hopping.
19. The base station of claim 11, wherein the configuration unit is configured to: configuring the primary broadcast channel to transmit only in the odd cycles or configuring the primary broadcast channel to transmit only in the even cycles when a primary broadcast channel is present in the second sub-band or the third sub-band.
20. The base station of claim 19, wherein the primary broadcast channel carries indication information, and the indication information is used to identify whether the band locations of the at least two current sub-bands are changed.
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