CN114342484A - System information receiving method, system information transmitting method, system information receiving device, system information transmitting device, terminal and storage medium - Google Patents
System information receiving method, system information transmitting method, system information receiving device, system information transmitting device, terminal and storage medium Download PDFInfo
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- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
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- H—ELECTRICITY
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- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]
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- 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]
Abstract
The application discloses a system information receiving method, a system information sending method, a system information receiving device, a system information sending device, a terminal and a storage medium, and relates to the technical field of communication, wherein the method comprises the following steps: receiving broadcast information in a sidelink broadcast channel; acquiring indication information; and determining system information carried in the broadcast information according to the indication information. According to the method and the device, the system information carried in the broadcast information is determined through the indication information, so that whether the system information is from the eNB or the gNB, the terminal outside the cell can correctly receive and analyze the system information, interference generated by data transmission of the terminal outside the cell on a downlink subframe is avoided, and the communication quality of the vehicle networking system is improved.
Description
The application claims a priority of a PCT application with an application date of 11/06/2019, an application number of PCT/CN2019/116058 and a name of system information receiving method, system information sending method, device, terminal and storage medium
The present application relates to the field of mobile communications, and in particular, to a method and an apparatus for receiving system information, a method for transmitting system information, a terminal, and a storage medium.
A Vehicle to evolution (V2X) system supports Device to Device (D2D) communication. Direct communication between two terminals can be realized through a SideLink (SL). Vehicle network systems currently support three transmission modes, unicast, multicast and broadcast.
In SideLink transmission, a Physical SideLink Broadcast Channel (PDCCH) is supported, and the PSBCH is mainly used for a terminal in a cell to send system information in the cell to a terminal outside the cell, so that interference caused by the terminal outside the cell to transmission in the cell is avoided. For example, Time-Division Duplex-UpLink-DownLink (Time-Division Duplex-UpLink-DownLink) configuration information is carried in the PSBCH and used for indicating TDD timeslot format configuration in the cell, and the terminal in the cell sends the information to the terminal outside the cell through the PSBCH, so that the terminal outside the cell is prevented from transmitting data on a DownLink subframe, and interference to DownLink data in the cell can be avoided.
In a New Radio (NR) V2X system, an evolved node B (eNode B, eNB) and a gNB are supported as synchronization sources of system information, but information contents in the two system information are not the same, and how a UE correctly receives the system information is an urgent technical problem to be solved.
Disclosure of Invention
The embodiment of the application provides a system information receiving method, a system information sending method, a device, a terminal and a storage medium, which can be used for solving the problem of how to reasonably receive system information in an internet of vehicles system due to different information contents in two types of system information when an eNB and a gNB are simultaneously supported as synchronous sources of the system information. The technical scheme is as follows:
according to an aspect of the present application, there is provided a system information receiving method, the method including:
receiving broadcast information in a sidelink broadcast channel;
acquiring indication information;
and determining system information carried in the broadcast information according to the indication information.
According to another aspect of the present application, there is provided a system information transmitting method, including:
generating broadcast information according to the system information;
and sending the broadcast information in a sideline broadcast channel, wherein the indication information carried in the broadcast information is used for a receiving side terminal to determine the system information carried in the broadcast information.
According to another aspect of the present application, there is provided a system information transmitting method, including:
a first type of network equipment sends a System Information Block (SIB), wherein the System Information Block comprises configuration Information of side-line transmission, and the configuration Information comprises first indication Information used for determining a slot format;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
According to another aspect of the present application, there is provided a system information transmitting method, including:
the terminal receives an SIB sent by a first type of network equipment, wherein the system message block comprises configuration information of sidestream transmission, and the configuration information comprises first indication information used for determining a time slot format;
the terminal generates sideline broadcast information according to the SIB;
the terminal sends a side-line broadcast channel, and the side-line broadcast channel carries the side-line broadcast information;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
According to another aspect of the present application, there is provided a system information receiving apparatus, the apparatus including:
a receiving module for receiving broadcast information in a sideline broadcast channel;
the acquisition module is used for acquiring the indication information;
and the determining module is used for determining the system information carried in the broadcast information according to the indication information.
According to another aspect of the present application, there is provided a system information transmitting apparatus, the apparatus including:
the generating module is used for generating broadcast information according to the system information;
a sending module, configured to send the broadcast information in a sideline broadcast channel, where indication information carried in the broadcast information is used for a receiving side terminal to determine the system information carried in the broadcast information.
According to another aspect of the present application, there is provided a system information transmitting apparatus, the apparatus including:
a sending module, configured to send an SIB, where the system message block includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
According to another aspect of the present application, there is provided a system information transmitting apparatus, the apparatus including:
a receiving module, configured to receive an SIB sent by a first type of network device, where the system message block includes configuration information for sidelink transmission, and the configuration information includes first indication information used for determining a slot format;
a generating module, configured to generate sideline broadcast information according to the SIB;
a sending module, configured to send a sideline broadcast channel, where the sideline broadcast channel carries the sideline broadcast information;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
According to another aspect of the present application, there is provided a terminal, including:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the system information receiving method performed by the terminal or the system information transmitting method performed by the terminal as described above.
According to another aspect of the present application, there is provided a network device, including:
a processor;
a transceiver coupled to the processor;
a memory for storing executable instructions of the processor;
wherein the processor is configured to load and execute the executable instructions to implement the system information transmitting method performed by the network device.
According to another aspect of the present application, there is provided a chip comprising programmable logic circuits and/or program instructions, which when run, are adapted to implement the above-mentioned system information receiving method, or system information sending method.
According to another aspect of the present application, there is provided a computer-readable storage medium, in which executable instructions are stored, and the executable instructions are loaded and executed by the processor to implement the system information receiving method or the system information transmitting method described above.
The technical scheme provided by the embodiment of the application at least comprises the following beneficial effects:
the system information carried in the broadcast information is determined through the indication information, so that whether the system information is from an eNB or a gNB, a terminal outside a cell can correctly receive and analyze the system information, interference generated by data transmission of the terminal outside the cell on a downlink subframe is avoided, and the communication quality of the vehicle networking system is improved.
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a block diagram of a vehicle networking system provided by an exemplary embodiment of the present application;
fig. 2 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application;
fig. 3 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application;
fig. 4 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application;
fig. 5 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application;
fig. 6 is a flowchart of a method for sending system information according to an exemplary embodiment of the present application;
fig. 7 is a block diagram of a system information receiving apparatus provided in an exemplary embodiment of the present application;
fig. 8 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application;
fig. 9 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application;
fig. 10 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application;
fig. 11 is a block diagram of a terminal provided in an exemplary embodiment of the present application.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The present application is first briefly described in relation to several technical terms:
D2D/V2X
vehicle to outside world (V2X) is a SideLink (SL) transmission technology based on D2D communication, and unlike the traditional cellular system in which communication data is received or transmitted through a base station, the car networking system adopts a terminal-to-terminal direct communication mode, so that the Vehicle to outside world (V2X) has higher spectral efficiency and lower transmission delay. Two transmission modes are defined in 3 GPP: mode a and mode B.
Mode A: the transmission resource of the terminal 120 is allocated by the base station 140 through downlink, and the terminal 120 transmits data on the sidelink according to the transmission resource allocated by the base station 140; base station 140 may allocate transmission resources for a single transmission to terminal 120 or may allocate transmission resources for a semi-static transmission to terminal 120, as shown in fig. 1.
And (3) mode B: the terminal 120 selects a resource from the resource pool for data transmission. Specifically, the terminal 120 may select the transmission resource from the resource pool by an interception method, or select the transmission resource from the resource pool by a random selection method.
Fig. 2 shows a flowchart of a method for receiving system information according to an exemplary embodiment of the present application. The present application is illustrated with the method applied to a terminal. The terminal may be a terminal in a car networking system. The method comprises the following steps:
the broadcast information is transmitted by other terminals. The broadcast information carries system information that is synchronized by other terminals from a synchronization source. The synchronization source is eNB or gNB.
The eNB is an access network device in Long-Term Evolution (LTE), and the gNB is an access network device in an NR system.
optionally, the indication information is carried explicitly or implicitly by the broadcast information. The indication information is used for indicating the type of the system information carried in the broadcast information.
Illustratively, the indication information is used to indicate that the system information carried in the broadcast information is a first parameter set; or, the indication information is used to indicate that the system information carried in the broadcast information is the second parameter set.
Wherein the first set of parameters is a set of parameters included in system information provided by the eNB, and the second set of parameters is a set of parameters included in system information provided by the NR.
And step 203, determining the system information carried in the broadcast information according to the indication information.
And the terminal determines the system information carried in the broadcast information as a first parameter set or a second parameter set according to the indication information.
The first set of parameters is system information corresponding to a first type of base station (eNB), and the first set of parameters includes: at least one of a system bandwidth, a TDD-UL-DL configuration, a Direct Frame Number (DFN), a subframe Number, and In coverage indicator (In coverage indicator);
the second parameter set is system information corresponding to a second type base station (gNB), and the second parameter set includes: at least one of BandWidth Part (BWP) indication information, TDD configuration indication information, DFN, slot number, and In coverage indicator (In indicator).
In summary, in the method provided in this embodiment, the system information carried in the broadcast information is determined through the indication information, so that no matter whether the system information is from the eNB or the gNB, a terminal outside the cell can correctly receive and analyze the system information, thereby avoiding interference generated by data transmission of the terminal outside the cell on the downlink subframe, and improving communication quality of the car networking system.
Fig. 3 shows a flowchart of a method for receiving system information according to an exemplary embodiment of the present application. The present application is illustrated with the method applied to a terminal. The terminal may be a terminal in a car networking system. The method comprises the following steps:
and the terminal synchronously obtains the system information from the synchronous source. The synchronization source is eNB or gNB.
And the terminal generates broadcast information, wherein the broadcast information carries system information and indication information.
Optionally, the indication information is carried explicitly or implicitly by the broadcast information. The indication information is used for indicating the type of the system information carried in the broadcast information.
Illustratively, the indication information is used to indicate that the system information carried in the broadcast information is a first parameter set; or, the indication information is used to indicate that the system information carried in the broadcast information is the second parameter set.
Wherein the first set of parameters is a set of parameters included in system information provided by the eNB, and the second set of parameters is a set of parameters included in system information provided by the NR.
The first set of parameters is system information corresponding to a first type of base station (eNB), and the first set of parameters includes: at least one of a system bandwidth, a TDD-UL-DL configuration, a Direct Frame Number (DFN), a subframe number, and an In coverage indicator (In coverage indicator).
Wherein the TDD-UL-DL configuration is used for determining information of a time slot or a subframe.
The second parameter set is system information corresponding to a second type base station (gNB), and the second parameter set includes: at least one of BandWidth Part (BWP) indication information, TDD configuration information, DFN, slot number, and In coverage indicator (In indicator).
The TDD configuration information is different from TDD-UL-DL configuration information in an LTE system. In the LTE system, TDD-UL-DL has only 7 configurations, while in the gNB system, the information may indicate more configuration information in consideration of supporting flexible timeslot configuration, for example, the TDD configuration indication information is used to indicate cell-specific timeslot format configuration information, or is used to indicate time domain resource information available for sidelink transmission, or is used to indicate uplink timeslot or uplink time domain symbol information, etc.
Bandwidth part information: in the LTE system, the PSBCH includes information indicating a system bandwidth, and for the gNB system, a bandwidth part is introduced, so that the PSBCH needs to indicate bandwidth part information.
In summary, in the method provided in this embodiment, the system information carried in the broadcast information is determined through the indication information, so that no matter whether the system information is from the eNB or the gNB, a terminal outside the cell can correctly receive and analyze the system information, thereby avoiding interference generated by data transmission of the terminal outside the cell on the downlink subframe, and improving communication quality of the car networking system.
Fig. 4 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application. The present application is illustrated with the method applied to a terminal. The terminal may be a terminal in a car networking system. The method comprises the following steps:
step 401, a first terminal generates broadcast information according to system information, wherein the broadcast information carries a target bit field and system information;
and the terminal synchronously obtains the system information from the synchronous source. The synchronization source is eNB or gNB.
And the terminal generates broadcast information, wherein the broadcast information carries system information and indication information. The indication information is a target bit field carried in the broadcast information. The target bit field is used to indicate the type of system information carried in the broadcast information.
Exemplarily, the target bit field having a first value is used to indicate that system information carried in broadcast information is a first parameter set; or, the target bit field with the second value is used to indicate that the system information carried in the broadcast information is the second parameter set.
Wherein the first set of parameters is a set of parameters included in system information provided by the eNB, and the second set of parameters is a set of parameters included in system information provided by the NR.
Step 402, a first terminal sends broadcast information in a sideline broadcast channel, and indication information carried in the broadcast information is used for a receiving terminal to determine system information carried in the broadcast information;
step 403, the second terminal receives the broadcast information in the sideline broadcast channel;
step 404, the second terminal obtains a target bit field in the broadcast information;
step 405, when the target bit field is the first value, the second terminal determines that the system information carried in the broadcast information is the first parameter set;
the first set of parameters is system information corresponding to a first type of base station (eNB), and the first set of parameters includes: at least one of a system bandwidth, TDD-UL-DL configuration, a DFN, a subframe number, and In coverage indicator (In coverage indicator);
in step 406, when the target bit field is the second value, the second terminal determines that the system information carried in the broadcast information is the second parameter set.
The second parameter set is system information corresponding to a second type base station (gNB), and the second parameter set includes: at least one of BandWidth Part (BWP) indication information, TDD configuration indication information, DFN, slot number, and In coverage indicator (In indicator).
In summary, in the method provided in this embodiment, the system information carried in the broadcast information is determined through the explicit indication information (target bit field), so that no matter whether the system information is from the eNB or the gNB, the terminal outside the cell can correctly receive and analyze the system information, thereby avoiding interference generated by the terminal outside the cell transmitting data on the downlink subframe, and improving the communication quality of the vehicle networking system.
Fig. 5 is a flowchart of a method for receiving system information according to an exemplary embodiment of the present application. The present application is illustrated with the method applied to a terminal. The terminal may be a terminal in a car networking system. The method comprises the following steps:
step 501, a first terminal generates broadcast information according to system information, wherein the broadcast information carries a synchronization information block and system information;
and the terminal synchronously obtains the system information from the synchronous source. The synchronization source is eNB or gNB.
The terminal generates broadcast information, wherein the broadcast information carries system information and a side line synchronization signal block (S-SSB). The indication information is a Synchronization Signal identification number indicated by a side line Primary Synchronization Signal (S-PSS) and a side line Secondary Synchronization Signal (S-SSS) in the SSB.
Exemplarily, the synchronization signal identification number belonging to the first set is used to indicate that the system information carried in the broadcast information is the first parameter set; or, the synchronization signal identification number with the second set is used for indicating that the system information carried in the broadcast information is the second parameter set.
Wherein the first set of parameters is a set of parameters included in system information provided by the eNB, and the second set of parameters is a set of parameters included in system information provided by the NR.
In one example, the first set is: {0,1, …, 167}, the second set being: {168,169, …, 335 }.
In another example, the first set is: {1, …, 167 }; the second set is: {170,171, …, 335 }. This is because, in LTE-V2X, when the synchronization source of the terminal is from a Global Navigation Satellite System (GNSS), the SSID corresponding to the SLSS sent by the terminal is 0, and if the synchronization source of the terminal is from a terminal directly synchronized with the GNSS, the SSID corresponding to the SLSS sent by the terminal is 168 or 169, so considering that the SSIDs 168 and 169 are also used by LTE-V2X, the two SSIDs need to be excluded from the second subset.
Step 502, a first terminal sends broadcast information in a sideline broadcast channel, and indication information carried in the broadcast information is used for a receiving terminal to determine system information carried in the broadcast information;
step 503, the second terminal receives the broadcast information in the sideline broadcast channel;
step 504, the second terminal obtains a side line main synchronizing signal and a side line auxiliary synchronizing signal from a synchronizing signal block where the broadcast information is located;
step 505, the second terminal determines a synchronization signal identification number according to the side line main synchronization signal and the side line auxiliary synchronization signal;
illustratively, the second terminal determines the synchronization signal identification number according to the following formula:
wherein the content of the first and second substances,
is obtained by the side row auxiliary synchronization signal,
is obtained by the side row master sync signal.
Step 506, when the identification number of the synchronization signal belongs to the first set, the second terminal determines that the system information carried in the broadcast information is the first parameter set;
wherein the first set is: {0,1, …, 167} or {1, …, 167 }.
The first set of parameters is system information corresponding to a first type of base station (eNB), and the first set of parameters includes: at least one of a system bandwidth, TDD-UL-DL configuration, a DFN, a subframe number, and In coverage indicator (In coverage indicator);
step 507, when the synchronization signal identification number belongs to the second set, the second terminal determines that the system information carried in the broadcast information is the second parameter set.
Wherein the second set is: {168,169, …, 335} or {170,171, …, 335 }.
The second parameter set is system information corresponding to a second type base station (gNB), and the second parameter set includes: at least one of BandWidth Part (BWP) indication information, TDD configuration indication information, DFN, slot number, and In coverage indicator (In indicator).
In summary, in the method provided in this embodiment, the system information carried in the broadcast information is determined through the implicit indication information (synchronization signal identification number), so that no matter whether the system information is from the eNB or the gNB, the terminal outside the cell can correctly receive and analyze the system information, thereby avoiding interference generated by the terminal outside the cell transmitting data on the downlink subframe, and improving the communication quality of the car networking system.
In one possible implementation based on fig. 2, the terminal receives a side row Synchronization Signal (SLSS), which includes a side row Primary Synchronization Signal (S-PSS) and a side row Secondary Synchronization Signal (S-SSS), and determines whether the system information carried in the broadcast information is the first parameter set or the second parameter set according to time domain positions of the S-PSS and the S-SSS. For example, if the time domain symbols for transmitting the S-PSS and the S-SSS are adjacent or differ by one slot, it may be determined that the system information carried in the broadcast information is the second parameter set, that is, the system information provided by the gNB; if the time domain symbols for transmitting the S-PSS and the S-SSS differ by more than one time domain symbol, it may be determined that the system information carried in the broadcast information is the first parameter set, i.e., the system information provided by the eNB.
The application also provides a technical scheme based on another idea to solve the technical problems. The difference between the first type of network device and the second type of network device in the configuration of TDD-UL-DL is illustrated by the first type of network device being an eNB in LTE and the second type of network device being a gNB in NR.
In LTE-V2X, an eNB sends an SIB to a terminal, where the SIB carries TDD-UL-DL configuration information. This TDD-UL-DL configuration information includes 7 possible formats, so 3 bits (binary 0 to 6) are needed to indicate in the PSBCH carrying the SIB. Table one schematically shows a format of TDD-UL-DL configuration information.
Watch 1
Wherein D represents downlink, U represents uplink, and S represents special subframe.
In NR-V2X, the gNB sends Radio Resource Control (RRC) signaling to the terminal, where the RRC signaling carries TDD configuration information (also called TDD-UL-DL-ConfigCommon, TDD-UL-DL-configuration command) in a different indication manner from that of the TDD-UL-DL configuration information of the eNB, and a specific signaling format is as follows:
TDD-UL-DL-configuration command:: ═ sequence::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
a reference subcarrier space;
pattern 1 TDD-UL-DL-pattern,
pattern 2 TDD-UL-DL-pattern,
…
}
TDD-UL-DL-pattern (sequence) ready for use
DL-UL-Transmission period enumeration type { ms0p5, ms0p625, ms1, ms1p25, etc. }
NR downlink slot shaping (0.. NR maximum number of slots),
the downlink symbol integer of NR (0.. max symbol number of NR-1),
NR uplink slot shaping (0.. NR maximum number of slots),
up symbol integer of NR (0.. maximum symbol number of NR-1)
…，
[[
DL-UL-Transmission period-v 1530 enumeration type { ms3, ms4}
]]
}
The maximum number of time slots (maxNrofSlots) of NR refers to the maximum number of time slots in a 10ms period, such as 320;
NR maximum symbol number-1 (maxNrofSymbels-1) refers to the maximum index identification of symbols in a slot, such as 14 symbols, with the index starting from 0.. 13)
The DL-UL-transmission period refers to a period of a DL-UL pattern;
NR downlink slots (nrofDownlinkSlots) refer to the number of consecutive complete downlink slots at the beginning of each DL-UL pattern.
The downlink symbol (nrofdownlinlnksymbols) of NR refers to the number of consecutive DL symbols in the beginning of the slot after the last full DL slot.
NR's uplink slots (nrofUplinkSlots) refer to the number of consecutive complete UL slots at the end of each DL-UL pattern.
The uplink symbol (nrofuplink symbols) of the NR refers to the number of consecutive UL symbols at the end of the slot before the first full UL slot.
Since the difference between the two types of indication information for determining the slot format results in a difference between the sideline broadcast information finally broadcast by the terminal, the following embodiments are further provided in the present application:
fig. 6 shows a flowchart of a method for sending system information according to an exemplary embodiment of the present application. The application is exemplified with the method applied to a car networking system. The vehicle network system includes a network device (such as a base station) and a terminal. The method comprises the following steps:
step 601, a first type network device sends an SIB, where the SIB includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;
the indication mode of the first indication information is the same as that of the second indication information, and the second indication information is indication information which is sent by the second type network equipment and used for determining the slot format.
Optionally, the second indication information is carried in RRC signaling sent by the second type of network device.
Optionally, the first indication information is carried in RRC signaling sent by the first type of network device.
Optionally, the first type of network device is an eNB in an LTE system, the first indication information is TDD-UL-DL configuration information, the second type of network device is a gNB in an NR system, and the second indication information is TDD configuration information. That is, the first indication information for determining the slot format in the SIB sent by the eNB in this step is in the same indication mode (or signaling format) as the TDD configuration information sent by the gNB in the RRC signaling.
In one example, the first indication information includes at least one of the following information: transmission period, number of downlink time slots and number of uplink time slots. The transmission period refers to a period of an uplink and downlink switching point of TDD. Optionally, the number of downlink timeslots is the number of consecutive downlink timeslots; the number of uplink timeslots is the number of consecutive uplink timeslots. Illustratively, the following is for each configuration in table one:
for the configuration 0 in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 5ms, the number of (continuous) downlink time slots is 1, and the number of (continuous) uplink time slots is 3.
For the configuration 1 in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 5ms, the number of (consecutive) downlink time slots is 2, and the number of (consecutive) uplink time slots is 2.
For the 2 nd configuration in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 5ms, the number of (consecutive) downlink time slots is 3, and the number of uplink time slots is 1.
For the 3 rd configuration in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 10ms, the number of (consecutive) downlink time slots is 6, and the number of (consecutive) uplink time slots is 3.
For the 4 th configuration in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 10ms, the number of (consecutive) downlink time slots is 7, and the number of (consecutive) uplink time slots is 2.
For the 5 th configuration in table one, the first indication information is represented by pattern 1 in the TDD configuration information, that is: the transmission cycle is 10ms, the number of (consecutive) downlink time slots is 8, and the number of (consecutive) uplink time slots is 1.
For the 6 th configuration in table one, the first indication information is represented by pattern 1 and pattern 2 in the TDD configuration information. With subframes 0-4 and subframe 9 as a group, i.e. transmission period 6ms, represented by pattern 1: the number of (consecutive) downlink time slots is 2 and the number of (consecutive) uplink time slots is 3. With subframes 5-8 as a group, i.e. transmission period 4ms, represented by pattern 2: the number of (consecutive) downlink time slots is 1 and the number of (consecutive) uplink time slots is 2.
Further, the first indication information further includes the following information: the number of downlink symbols and the number of uplink symbols. In this case, the configuration information of the Special Subframe (Special Subframe) in the TDD-UL-DL configuration information in the LTE system may also adopt the same indication method (or signaling format) as the TDD configuration information transmitted by the gNB in the RRC signaling. The special subframe in the LTE system comprises a downlink symbol and an uplink symbol, wherein the downlink symbol is positioned at the starting position in the subframe, and the uplink symbol is positioned at the ending position in the subframe. The number of downlink symbols in the first indication information is used for indicating the number of downlink symbols in the special subframe, and the number of uplink symbols in the first indication information is used for indicating the number of uplink symbols in the special subframe.
In this embodiment, the first indication information sent by the eNB for determining the slot format may be in the same manner as the indication information of the gNB for determining the slot format, that is, the first indication information includes TDD-UL-DL pattern indication information, and the TDD-UL-DL pattern indication information includes: transmission cycle information, downlink slot information, uplink slot information, downlink symbol information, uplink symbol information, and the like.
Step 602, a terminal receives an SIB sent by a first type network device, where the SIB includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;
step 603, the terminal generates sideline broadcast information according to the SIB;
step 604, the terminal sends a side-line broadcast channel, and the side-line broadcast channel carries side-line broadcast information;
in an optional embodiment, the method further comprises the steps of:
step 605, the second type network device sends an RRC signaling, where the RRC signaling includes second indication information for determining a slot format;
optionally, the second type of network device sends SIB information, where the SIB information includes second indication information for determining the slot format
Step 606, the terminal receives an RRC signaling sent by the second type of network device, where the RRC signaling includes second indication information used for determining a slot format;
step 607, the terminal generates sideline broadcast information according to the RRC signaling;
step 608, the terminal sends a sideline broadcast channel, and the sideline broadcast channel carries sideline broadcast information.
Since the first indication information in step 601 and the second indication information in step 605 are in the same indication scheme, the sideline broadcast information generated in step 604 and step 608 can be in the same format, and the receiving terminal for receiving the sideline broadcast information can analyze the system information from both synchronization sources by using the same analysis scheme without distinguishing whether the synchronization source is the eNB or the gNB.
In summary, in the method provided in this embodiment, the first network device sends the SIB carrying the first indication information for determining the slot format, and the indication manner of the first indication information is the same as that of the second indication information, so that the generated sideline broadcast information can keep consistent in format, and the receiving side terminal can analyze the system information from the two synchronization sources by using the same analysis manner without distinguishing whether the synchronization source is the eNB or the gNB.
Fig. 7 is a flowchart of a system information receiving apparatus according to an exemplary embodiment of the present application. The device includes:
a receiving module 720, configured to receive broadcast information in a sideline broadcast channel;
an obtaining module 740, configured to obtain the indication information;
a determining module 760, configured to determine, according to the indication information, system information carried in the broadcast information.
In an alternative embodiment, the obtaining module 740 is configured to obtain the indication information from the broadcast information.
In an alternative embodiment, the indication information includes a target bit field in the broadcast information;
the determining module 760 is configured to determine that system information carried in the broadcast information is a first parameter set when the target bit field is a first value; and when the target bit field is a second value, determining that the system information carried in the broadcast information is a second parameter set.
In an optional embodiment, the indication information includes: a synchronization signal identification number;
the determining module 760 is configured to determine that the system information carried in the broadcast information is a first parameter set when the synchronization signal identification number belongs to a first set; and when the synchronous signal identification number belongs to a second set, determining that the system information carried in the broadcast information is a second parameter set.
In an optional embodiment, the obtaining module 740 is configured to obtain a side line primary synchronization signal and a side line secondary synchronization signal from a synchronization signal block where the broadcast information is located; and determining the identification number of the synchronous signal according to the side row main synchronous signal and the side row auxiliary synchronous signal.
In an alternative embodiment, the first set is: {0,1, …, 167} or {1, …, 167 }; the second set is: {168,169, …, 335} or {170,171, …, 335 }.
Fig. 8 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application. The device includes:
a generating module 820, configured to generate broadcast information according to the system information;
a sending module 840, configured to send the broadcast information in a sideline broadcast channel, where the indication information carried in the broadcast information is used for a receiving side terminal to determine system information carried in the broadcast information.
In an alternative embodiment, the indication information includes a target bit field in the broadcast information;
the target bit field with a first value is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;
and the target bit field with a second value is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
In an optional embodiment, the indication information includes: a synchronization signal identification number;
the synchronization signal identification number belonging to the first set is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;
and the synchronization signal identification number belonging to the second set is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
In an optional embodiment, the synchronization signal identification number is indicated by a side line primary synchronization signal and a side line secondary synchronization signal of a synchronization signal block in which the broadcast information is located.
In an alternative embodiment, the first set is: {0,1, …, 167} or {1, …, 167 }; the second set is: {168,169, …, 335} or {170,171, …, 335 }.
Fig. 9 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application. The device includes:
a sending module 920, configured to send an SIB, where the SIB includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
In one possible embodiment, the first indication information comprises at least one of the following information:
transmission cycle, number of (consecutive) downlink time slots, and number of (consecutive) uplink time slots.
In a possible embodiment, the second indication information is carried in a Radio Resource Control (RRC) signaling sent by the second type of network device.
In one possible embodiment, the first type of network device is an eNB in LTE, and the second type of network device is a gNB in NR. The first indication information is TDD-DL-UL configuration information, and the second indication information is TDD configuration information.
Fig. 10 is a block diagram of a system information transmitting apparatus according to an exemplary embodiment of the present application. The device includes:
a receiving module 1020, configured to receive a system information block SIB sent by a first type of network device, where the system information block includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;
a generating module 1040, configured to generate sideline broadcast information according to the system information block SIB;
a sending module 1060, configured to send a sideline broadcast channel, where the sideline broadcast channel carries the sideline broadcast information;
the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
In one possible embodiment, the first indication information comprises at least one of the following information:
transmission cycle, number of (consecutive) downlink time slots, and number of (consecutive) uplink time slots.
In a possible embodiment, the second indication information is carried in a Radio Resource Control (RRC) command sent by the second type of network device.
In one possible embodiment, the first type of network device is an eNB in LTE, and the second type of network device is a gNB in NR. The first indication information is TDD-DL-UL configuration information, and the second indication information is TDD configuration information.
Fig. 11 shows a schematic structural diagram of a communication device (terminal or network device) according to an exemplary embodiment of the present application, where the communication device includes: a processor 1101, a receiver 1102, a transmitter 1103, a memory 1104, and a bus 1105.
The processor 1101 includes one or more processing cores, and the processor 1101 executes various functional applications and information processing by running software programs and modules.
The receiver 1102 and the transmitter 1103 may be implemented as one communication component, which may be one communication chip.
The memory 1104 is coupled to the processor 1101 by a bus 1105.
The memory 1104 may be used to store at least one instruction that the processor 1101 uses to execute to implement the various steps in the method embodiments described above.
Further, memory 1104 may be implemented by any type or combination of volatile or non-volatile storage devices, including, but not limited to: magnetic or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), Static Random Access Memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM).
In an exemplary embodiment, a computer-readable storage medium is further provided, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the system information receiving method performed by the terminal, or the system information sending method performed by the network device, provided by the above-mentioned various method embodiments.
In an exemplary embodiment, a computer-readable storage medium is further provided, where at least one instruction, at least one program, a code set, or a set of instructions is stored in the computer-readable storage medium, and the at least one instruction, the at least one program, the code set, or the set of instructions is loaded and executed by the processor to implement the system information receiving method or the system information sending method provided by the above-mentioned method embodiments.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk, an optical disk, or the like.
The above description is only exemplary of the present application and should not be taken as limiting, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (39)
- A method for receiving system information, the method comprising:receiving broadcast information in a sidelink broadcast channel;acquiring indication information;and determining system information carried in the broadcast information according to the indication information.
- The method of claim 1, wherein the indication information comprises a target bit field in the broadcast information;the determining, according to the indication information, system information carried in the broadcast information includes:when the target bit field is a first value, determining that system information carried in the broadcast information is a first parameter set;and when the target bit field is a second value, determining that the system information carried in the broadcast information is a second parameter set.
- The method of claim 1, wherein the indication information comprises: a synchronization signal identification number;the determining, according to the indication information, system information carried in the broadcast information includes:when the synchronous signal identification number belongs to a first set, determining that system information carried in the broadcast information is a first parameter set;and when the synchronous signal identification number belongs to a second set, determining that the system information carried in the broadcast information is a second parameter set.
- The method of claim 3, wherein the obtaining the indication information comprises:acquiring a side line main synchronizing signal and a side line auxiliary synchronizing signal from a synchronizing signal block where the broadcast information is located;and determining the identification number of the synchronous signal according to the side row main synchronous signal and the side row auxiliary synchronous signal.
- The method of claim 3,the first set is: {0,1, …, 167} or {1, …, 167 };the second set is: {168,169, …, 335} or {170,171, …, 335 }.
- A method for sending system information, the method comprising:generating broadcast information according to the system information;and sending the broadcast information in a sideline broadcast channel, wherein the indication information carried in the broadcast information is used for a receiving side terminal to determine the system information carried in the broadcast information.
- The method of claim 6, wherein the indication information comprises a target bit field in the broadcast information;the target bit field with a first value is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;and the target bit field with a second value is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
- The method of claim 6, wherein the indication information comprises: a synchronization signal identification number;the synchronization signal identification number belonging to the first set is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;and the synchronization signal identification number belonging to the second set is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
- The method of claim 8, wherein the synchronization signal identification number is indicated by a sidelink primary synchronization signal and a sidelink secondary synchronization signal of a synchronization signal block in which the broadcast information is located.
- The method of claim 8,the first set is: {0,1, …, 167} or {1, …, 167 };the second set is: {168,169, …, 335} or {170,171, …, 335 }.
- A method for sending system information, the method comprising:the method comprises the steps that a first type of network equipment sends a system message block SIB, wherein the system message block comprises configuration information of sidestream transmission, and the configuration information comprises first indication information used for determining a time slot format;the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
- The method of claim 11, wherein the first indication information comprises at least one of the following information:the number of the uplink time slots is larger than the number of the downlink time slots.
- The method of claim 11, further comprising:the second indication information is carried in a Radio Resource Control (RRC) signaling sent by the second type of network equipment.
- The method according to any one of claims 11 to 13, wherein the first type of network device is a base station eNB in LTE, and the second type of network device is a base station gNB in NR.
- A method for sending system information, the method comprising:a terminal receives a system information block SIB sent by a first type network device, wherein the system information block comprises configuration information of sidestream transmission, and the configuration information comprises first indication information used for determining a time slot format;the terminal generates sideline broadcast information according to the system information block SIB;the terminal sends a side-line broadcast channel, and the side-line broadcast channel carries the side-line broadcast information;the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
- The method of claim 15, wherein the first indication information comprises at least one of the following information:the number of the uplink time slots is larger than the number of the downlink time slots.
- The method of claim 15, further comprising:the second indication information is carried in a Radio Resource Control (RRC) signaling sent by the second type of network equipment.
- The method according to any one of claims 15 to 17, wherein the first type of network device is a base station eNB in LTE, and the second type of network device is a base station gNB in NR.
- A system information receiving apparatus, comprising:a receiving module for receiving broadcast information in a sideline broadcast channel;the acquisition module is used for acquiring the indication information;and the determining module is used for determining the system information carried in the broadcast information according to the indication information.
- The apparatus of claim 19, wherein the indication information comprises a target bit field in the broadcast information;the determining module is configured to determine that system information carried in the broadcast information is a first parameter set when the target bit field is a first value; and when the target bit field is a second value, determining that the system information carried in the broadcast information is a second parameter set.
- The apparatus of claim 19, wherein the indication information comprises: a synchronization signal identification number;the determining module is configured to determine that system information carried in the broadcast information is a first parameter set when the synchronization signal identification number belongs to a first set; and when the synchronous signal identification number belongs to a second set, determining that the system information carried in the broadcast information is a second parameter set.
- The apparatus of claim 21,the acquisition module is used for acquiring a side line main synchronization signal and a side line auxiliary synchronization signal from a synchronization signal block where the broadcast information is located; and determining the identification number of the synchronous signal according to the side row main synchronous signal and the side row auxiliary synchronous signal.
- The apparatus of claim 21,the first set is: {0,1, …, 167} or {1, …, 167 };the second set is: {168,169, …, 335} or {170,171, …, 335 }.
- A system information transmitting apparatus, comprising:the generating module is used for generating broadcast information according to the system information;a sending module, configured to send the broadcast information in a sideline broadcast channel, where indication information carried in the broadcast information is used for a receiving side terminal to determine the system information carried in the broadcast information.
- The apparatus of claim 24, wherein the indication information comprises a target bit field in the broadcast information;the target bit field with a first value is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;and the target bit field with a second value is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
- The apparatus of claim 24, wherein the indication information comprises: a synchronization signal identification number;the synchronization signal identification number belonging to the first set is used for the terminal to determine that the system information carried in the broadcast information is a first parameter set;and the synchronization signal identification number belonging to the second set is used for the terminal to determine that the system information carried in the broadcast information is a second parameter set.
- The apparatus of claim 24, wherein the synchronization signal identification number is indicated by a sidelink primary synchronization signal and a sidelink secondary synchronization signal of a synchronization signal block in which the broadcast information is located.
- The apparatus of claim 24,the first set is: {0,1, …, 167} or {1, …, 167 };the second set is: {168,169, …, 335} or {170,171, …, 335 }.
- A system information transmitting apparatus, comprising:a sending module, configured to send a system message block SIB, where the system message block includes configuration information for sidelink transmission, and the configuration information includes first indication information for determining a slot format;the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by second type network equipment and used for determining a time slot format.
- The apparatus of claim 29, wherein the first indication information comprises at least one of:the number of the uplink time slots is larger than the number of the downlink time slots.
- The apparatus of claim 29, wherein the second indication information is carried in Radio Resource Control (RRC) signaling sent by the second type of network device.
- The apparatus according to any one of claims 29 to 31, wherein the first type of network device is a base station eNB in LTE, and the second type of network device is a base station gNB in NR.
- A system information transmitting apparatus, comprising:a receiving module, configured to receive a system information block SIB sent by a first type of network device, where the system information block includes configuration information for sidelink transmission, and the configuration information includes first indication information used for determining a slot format;a generating module, configured to generate sideline broadcast information according to the system information block SIB;a sending module, configured to send a sideline broadcast channel, where the sideline broadcast channel carries the sideline broadcast information;the indication mode of the first indication information is the same as that of second indication information, and the second indication information is indication information which is sent by the second type of network equipment and used for determining the slot format.
- The apparatus of claim 33, wherein the first indication information comprises at least one of:the number of the uplink time slots is larger than the number of the downlink time slots.
- The apparatus of claim 33, wherein the second indication information is carried in Radio Resource Control (RRC) signaling sent by the second type of network device.
- The apparatus according to any one of claims 33 to 35, wherein the first type of network device is a base station eNB in LTE, and the second type of network device is a base station gNB in NR.
- A terminal, characterized in that the terminal comprises:a processor;a transceiver coupled to the processor;a memory for storing executable instructions of the processor;wherein the processor is configured to load and execute the executable instructions to implement the system information receiving method according to any one of claims 1 to 5, or the system information transmitting method according to any one of claims 6 to 10, or the system information transmitting method according to any one of claims 15 to 18.
- A network device, characterized in that the network device comprises:a processor;a transceiver coupled to the processor;a memory for storing executable instructions of the processor;wherein the processor is configured to load and execute the executable instructions to implement the system information transmitting method of any one of claims 11 to 14.
- A computer-readable storage medium, wherein the computer-readable storage medium has stored therein executable instructions that are loaded and executed by the processor to implement the system information receiving method according to any one of claims 1 to 5, or the system information transmitting method according to any one of claims 6 to 10, or the system information transmitting method according to any one of claims 11 to 14, or the system information transmitting method according to any one of claims 15 to 18.
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| CNPCT/CN2019/116058 | 2019-11-06 | ||
| PCT/CN2019/116058 WO2021087822A1 (en) | 2019-11-06 | 2019-11-06 | System information receiving method, sending method, apparatus, terminal, and storage medium |
| PCT/CN2019/118960 WO2021088112A1 (en) | 2019-11-06 | 2019-11-15 | System information receiving method, sending method, device, terminal, and storage medium |
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| WO2021088112A1 (en) | 2021-05-14 |
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