CN110944386B - Configuration method of broadcast signaling, terminal and computer readable storage medium - Google Patents

Configuration method of broadcast signaling, terminal and computer readable storage medium Download PDF

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CN110944386B
CN110944386B CN201811107946.2A CN201811107946A CN110944386B CN 110944386 B CN110944386 B CN 110944386B CN 201811107946 A CN201811107946 A CN 201811107946A CN 110944386 B CN110944386 B CN 110944386B
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broadcast signaling
information
side link
broadcast
transmission period
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CN110944386A (en
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曲鑫
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

A configuration method of broadcast signaling, a terminal and a computer readable storage medium are provided. The method comprises the following steps: receiving broadcast signaling configuration information; configuring broadcast signaling based on the broadcast signaling configuration information and transmitting the broadcast signaling on a side link; wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling transmission period information is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information; the broadcast signaling includes at least MIB. By applying the scheme, the requirements of various service types in the 5G NR can be better met.

Description

Configuration method of broadcast signaling, terminal and computer readable storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a configuration method of a broadcast signaling, a terminal, and a computer-readable storage medium.
Background
V2X (Vehicle to X), namely the information exchange between vehicles and the outside, is a key technology of the future intelligent transportation system. By applying the V2X technology, the vehicles and the base stations can communicate with each other, so that a series of traffic information such as real-time road conditions, road information and pedestrian information can be obtained, the driving safety is effectively improved, the congestion is reduced, and the traffic efficiency is improved.
In Long Term Evolution (LTE), a User Equipment (UE) using V2X technology only supports periodic services, and performs data transmission in a broadcast manner, so that it is determined that a Master Information Block (MIB) transmitting a fixed period is only supported on a sidelink (sidelink) of LTE. Here, the so-called edge link is a link for transmission between the UE and the UE through the PC5 interface.
However, in New wireless (New, Radio) in fifth generation mobile communication (5G), UEs applying the V2X technology support not only periodic services but also aperiodic services, and data transmission forms are diverse, for example, transmission forms such as end-to-end propagation (unicast), multicast (groupcast), and broadcast (broadcast) are much more complicated than the transmission form of V2X of LTE.
At this time, if the configuration of the broadcast signaling in LTE is still used, it is difficult to satisfy the requirements of multiple service types in 5G NR.
Disclosure of Invention
The problem to be solved by the invention is how to configure system messages suitable for transmission on the side link to meet the requirements of multiple traffic types in 5G NR.
In order to solve the above problem, an embodiment of the present invention provides a method for configuring broadcast signaling, where the method includes: receiving broadcast signaling configuration information; configuring broadcast signaling based on the broadcast signaling configuration information and transmitting the broadcast signaling on a side link; wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling transmission period information is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information; the broadcast signaling includes at least MIB.
Optionally, the broadcast signaling further includes: SIB.
Optionally, the broadcast signaling configuration information further includes: and transmitting time offset information corresponding to the periodic information of the broadcast signaling.
Optionally, the broadcast signaling configuration information further includes at least one of: transmission location information of the broadcast signaling; subcarrier spacing information; cyclic prefix length information; maximum transmit power information for the side link; cell handover configuration information; transmission mode information of the side link; transmission mode information of the side link synchronization signal; side link synchronization signal and transmission mode information of physical side link broadcast channel; edge link park indication information.
Optionally, the transmission location information of the broadcast signaling includes at least one of: identification information of a serving cell in which the broadcast signaling is located; identification information of a partial Bandwidth (BWP) in which the broadcast signaling is located; frequency domain location information of the broadcast signaling; time domain location information of the broadcast signaling.
Optionally, the subcarrier spacing information includes at least one of: subcarrier spacing information of the broadcast signaling, subcarrier spacing information of the related signals on the side link, and subcarrier spacing information of the related signals on the uu link. Optionally, the subcarrier spacing included in the subcarrier spacing information is selected from the set {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof.
Optionally, the cell handover configuration information includes at least one of the following: switching threshold information; identification information of a target cell available for handover; identification information of a user group available for handover.
Optionally, when the broadcast signaling is MIB, the configuring broadcast signaling based on the broadcast signaling configuration information and transmitting on a sidelink includes: configuring the MIB based on the broadcast signaling configuration information and other signaling; and transmitting the MIB through a physical side link broadcast channel.
Optionally, the MIB comprises at least one of the following parameters: a subcarrier spacing parameter; a cycle length type parameter; configuring parameters of side link time slots; a transmission mode parameter of the side link synchronization signal; the transmission mode parameters of the side link synchronous signal and the physical side link broadcast channel; and the transmission mode parameter of the side link.
Optionally, when the broadcast signaling is an SIB, the configuring the broadcast signaling based on the broadcast signaling configuration information and transmitting the broadcast signaling on a side link includes: configuring the SIB based on the broadcast signaling configuration information; and transmitting the SIB through a physical side link shared channel.
Optionally, the SIB comprises at least one of the following parameters: a maximum transmit power parameter for the side link; cell handover configuration parameters; and the transmission mode parameter of the side link.
Optionally, the broadcast signaling configuration information is sent by the base station or is pre-configured.
An embodiment of the present invention further provides a terminal, where the terminal includes: a receiving unit adapted to receive broadcast signaling configuration information; a configuration unit adapted to configure a broadcast signaling based on the broadcast signaling configuration information and transmit on a side link; wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling transmission period information is selected from a broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information; the broadcast signaling includes at least MIB.
Optionally, the broadcast signaling further includes: SIB.
Optionally, the broadcast signaling configuration information further includes: and transmitting time offset information corresponding to the periodic information of the broadcast signaling.
Optionally, the broadcast signaling configuration information further includes at least one of: transmission location information of the broadcast signaling; subcarrier spacing information; cyclic prefix length information; maximum transmit power information for the side link; cell handover configuration information; transmission mode information of the side link and transmission mode information of the side link synchronization signal; side link synchronization signal and transmission mode information of physical side link broadcast channel; edge link park indication information.
Optionally, the transmission location information of the broadcast signaling includes at least one of: identification information of a serving cell in which the broadcast signaling is located; identification information of a part of bandwidth where the broadcast signaling is located; frequency domain location information of the broadcast signaling; time domain location information of the broadcast signaling.
Optionally, the subcarrier spacing information includes at least one of: subcarrier spacing information of the broadcast signaling, subcarrier spacing information of the related signals on the side link, and subcarrier spacing information of the related signals on the uu link.
Optionally, the subcarrier spacing included in the subcarrier spacing information is selected from the set {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof.
The cell switching configuration information includes at least one of: switching threshold information; identification information of a target cell available for handover; identification information of a user group available for handover.
The configuration unit includes: and the first configuration subunit is suitable for configuring the MIB based on the broadcast signaling configuration information and other signaling when the broadcast signaling is the MIB, and transmitting the MIB through a physical side link broadcast channel.
Optionally, the MIB comprises at least one of the following parameters: a subcarrier spacing; a cycle length type; configuring parameters of side link time slots; a transmission mode parameter of the side link synchronization signal; the transmission mode parameters of the side link synchronous signal and the physical side link broadcast channel; and the transmission mode of the side link.
Optionally, the configuration unit includes: a second configuration subunit adapted to configure the SIB based on the broadcast signaling configuration information and transmit the SIB through a physical edge link shared channel.
Optionally, the SIB comprises at least one of the following parameters: maximum transmit power of the side link; cell switching configuration; and the transmission mode of the side link.
Optionally, the broadcast signaling configuration information received by the receiving unit is sent by the base station, or is preconfigured.
Embodiments of the present invention further provide a computer-readable storage medium, on which computer instructions are stored, and when the computer instructions are executed, the method of any one of the above-mentioned steps is performed.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of running on the processor, and the processor executes any of the steps of the method when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following advantages:
by adopting the scheme, the broadcast signaling transmission period information is selected from the preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information, so that the configured broadcast signaling transmission period can have multiple choices instead of using a fixed transmission period, and the requirements of various service types in 5G NR can be better met.
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Fig. 1 is a flowchart of a configuration method of broadcast signaling in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a terminal in an embodiment of the present invention.
Detailed Description
In a wireless communication system, a uu link is a wireless communication protocol between a UE and a base station (UTRAN), where the base station may be an LTE base station (eNB), a 5G) NR base station (gNB), or a base station in other network systems. Side link (sidelink) refers to a wireless communication protocol between a UE and a UE without participation of a base station.
Currently, only Master Information Block (MIB) is supported on edge link (sidelink) of LTE for transmitting fixed periods. If the configuration of the broadcast signaling in LTE is still used in 5G NR, it is difficult to meet the requirements of multiple service types in 5G NR.
In view of this, an embodiment of the present invention provides a method for configuring a broadcast signaling, in which broadcast signaling transmission period information is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set includes two or more broadcast signaling transmission period information, so that the configured broadcast signaling transmission period may have multiple choices instead of using a fixed transmission period, and thus, requirements of multiple service types in 5G NR may be better satisfied.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, an embodiment of the present invention provides a method for configuring broadcast signaling, where the method may include the following steps:
step 11, receiving the broadcast signaling configuration information.
Wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling transmission period information is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information; the broadcast signaling includes at least MIB.
For example, the broadcast signaling transmission period set may be {40ms, 60ms, 80ms, 120ms }, and when configuring the broadcast signaling each time, a value may be selected from the preset broadcast signaling transmission period set as the transmission period of the broadcast signaling to be configured through the broadcast signaling configuration information, so that the transmission periods of the broadcast signaling configured each time may be different, and the requirements of multiple service types in 5G NR are better met.
In a specific implementation, the broadcast signaling configuration Information may only include configuration Information about the MIB, may only include configuration Information about the SIB, and may also include configuration Information about a System Information Block (SIB). After receiving the broadcast signaling configuration information, the UE configures the MIB, or configures the SIB, or configures the MIB and the SIB simultaneously. When the configured broadcast signaling contains both MIB and SIB, the configuration of the broadcast signaling can be more flexible, rather than only using one broadcast signaling to transmit corresponding information, which can better meet the service requirement of 5G NR.
In an embodiment of the present invention, the broadcast signaling configuration information received by the UE may be sent to the UE by the base station. The base station may send broadcast signaling configuration information to the UE through the uu link, where the broadcast signaling configuration information may be carried by a Physical Downlink Shared Channel (PDSCH). The broadcast signaling configuration information may be carried through SIBs.
In another embodiment of the present invention, in order to reduce signaling interaction between the base station and the UE and reduce power consumption of the UE, the broadcast signaling configuration information received by the UE may also be preconfigured. When configuring the broadcast signaling, the UE reads the pre-configured broadcast signaling configuration information, and configures the broadcast signaling according to the read content.
It will be understood by those skilled in the art that the source of the broadcast signaling configuration information is not a limitation of the present invention and is within the scope of the present invention.
And 12, configuring the broadcast signaling based on the broadcast signaling configuration information and transmitting the broadcast signaling on the side link.
In a specific implementation, the UE may configure the MIB based on the broadcast signaling configuration Information and an indication of other Radio Resource Control (RRC) RRC signaling or Downlink Control Information (DCI), carry a bearer through a sidelink Physical broadcast CHannel (PSBCH), and send the MIB in a broadcast form on the sidelink.
In a specific implementation, the UE may configure the SIB based on the broadcast signaling configuration information, carry the SIB through a Physical sidelink shared Channel (pscch), and send the SIB in a broadcast form on the sidelink. The psch is scheduled by a corresponding Physical Sidelink Control CHannel (PSCCH).
In a specific implementation, the SIB is configured, and a control resource set (CORESET) of the SIB is mainly configured, where the control resource set of the SIB indicates a time-frequency resource in which data carried by the SIB is located. And the UE of the side link acquires the data carried by the SIB from the corresponding time-frequency resource based on the control resource set of the SIB.
By adopting the broadcast signaling configuration method in the embodiment of the invention, the transmission period of the configured broadcast signaling can be more flexible, so that the requirement of 5G NR can be better met.
In order to enable those skilled in the art to better implement the present invention, the following detailed description of the broadcast signaling configuration information and the specific contents of the configured broadcast signaling:
in a specific implementation, the broadcast signaling configuration information may include transmission period information of broadcast signaling. When the configured broadcast signaling is only the MIB, the transmission period information of the broadcast signaling is only the transmission period information of the MIB. When the configured broadcast signaling is only SIB, the transmission period information of the broadcast signaling is only the transmission period information of SIB. When the configured broadcast signaling includes both the MIB and the SIB, the transmission period information of the broadcast signaling includes the transmission period information of both the MIB and the SIB, accordingly.
The unit of the transmission period may be a radio frame (radio frame), a slot (slot), or a symbol (symbol). For example, the first radio frame of the uu link may be used as a reference time of the transmission cycle of the MIB.
In an embodiment of the present invention, in addition to the transmission cycle information of the broadcast signaling, the broadcast signaling configuration information may further include: and transmitting time offset (time offset) information corresponding to the period information of the broadcast signaling.
Specifically, the corresponding time offset information may be set only for the transmission cycle information of the MIB, may also be set only for the transmission cycle information of the SIB, and may also be set for both the MIB and the SIB at the same time. Wherein the unit of the time offset may be a radio frame, a slot, or a symbol.
In an embodiment of the present invention, in addition to the transmission period information of the broadcast signaling and the time offset information corresponding to the transmission period information of the broadcast signaling, the broadcast signaling configuration information may further include at least one of the following:
1) transmission location information of the broadcast signaling;
2) subcarrier Spacing (SCS) information;
3) cyclic prefix length information;
4) maximum transmit power information for the side link;
5) cell handover configuration information;
6) and the transmission mode information of the side link.
7) Transmission method information of Sidelink Synchronization Signals (SLSS).
8) The transmission mode information of the side link synchronization signal and the physical side link broadcast channel (SLSS + PSBCH, SL-SSB).
9) Side link residence indication information
The following is a detailed description:
1) for the transmission location information of the broadcast signaling, the indication may be performed by at least one of identification information (cell-ID) of a serving cell where the broadcast signaling is located, identification information (BWP-ID) of a partial bandwidth where the broadcast signaling is located, frequency domain location information of the broadcast signaling, and time domain location information of the broadcast signaling.
For example, when the configured broadcast signaling is the MIB, the transmission location information of the MIB can be indicated by at least one of a cell-ID, a BWP-ID, time domain location information, and frequency domain location information where the MIB is located. When the configured broadcast signaling is an SIB, the transmission location information of the SIB may be indicated by at least one of a cell-ID, a BWP-ID, time domain location information, and frequency domain location information where the SIB is located.
When the transmission location information of the broadcast signaling only contains one of the above indication information, but not all of the indication information, the UE may determine the transmission location information of the broadcast signaling in combination with default other indication information.
For example, when only the cell-ID and the BWP-ID are used as the transmission location information of the broadcast signaling, the UE may determine the transmission location information of the broadcast signaling by combining the default broadcast signaling time and frequency domain location information in the protocol.
When only the BWP-ID is used as transmission location information of the broadcast signaling, the UE may default to the MIB and/or SIB being the same as the BWP-ID where the broadcast signaling configuration information is received.
When both the cell-ID and the BWP-ID are default, the UE may default to the MIB and/or SIB and the cell-ID and BWP-ID where the broadcast signaling configuration information is received are the same.
In a specific implementation, the frequency domain location information of the broadcast signaling may be indicated in the form of a Resource Indication Value (RIV) or in the form of a Resource Block Group (RBG), and the frequency domain location information of the broadcast signaling may be in the form of a bitmap (bitmap) to indicate a time domain Resource occupied by the broadcast signaling in a period, where the granularity of the Indication may be a radio frame, a timeslot, or a symbol.
For example, the starting position of the RB or RE and the length of the resource in the BWP or resource pool of the MIB and/or SIB are uniquely determined by the value of RIV.
In another example, the frequency domain location of at least one of the MIB and the SIB is indicated by a bitmap indicating a sequence number of the RBG. For example, 0011 represents MIB and/or SIB occupying the third and fourth RBGs.
For another example, the time domain resource occupied by at least one of the MIB and the SIB in one period is indicated by a bitmap, and the granularity indicated by the bitmap may be radio frame, slot, or symbol.
For example, 1000011 may represent that MIB and SIB occupy the first, sixth and seventh radio frames or slots or symbols in a cycle.
2) For the subcarrier spacing information, at least one of subcarrier spacing information of broadcast signaling, subcarrier spacing information of related signals on the side link, and subcarrier spacing information of related signals on the uu link may be included.
The subcarrier spacing information of the broadcast signaling may be only the subcarrier spacing information of the MIB, or may only include the subcarrier spacing information of the SIB, or may also be the subcarrier spacing information of the MIB and the SIB.
In a specific implementation, the signals transmitted on the side links may include: SLSS, CHannel Sounding Reference Signal (slsldlink Sounding Reference Signal, SL-SRS), CHannel Sounding Reference Signal and Physical side link broadcast CHannel (SLSS + PSBCH, SL-SSB), Physical side link broadcast CHannel (PSBCH), side link synchronization Signal and Physical side link broadcast CHannel (SLSS + PSBCH, SL-SSB); physical Sidelink Discovery CHannel (PSDCH); a side link Channel State indication Reference signal (SL-CSI-RS); a sidelink feedback channel (SL-FC); a Physical side link shared Channel (PSCCH) and a Physical side link Control Channel (PSCCH).
The subcarrier spacing information of the signals transmitted on the side link may include subcarrier spacing information of at least one of SLSS, SL-SRS, PSDCH, SL-SSB, PSBCH, PSSCH, PSCCH, SL-FC, SL-CSI-RS and SLSS + PSBCH.
In addition, the base station may configure a subcarrier interval corresponding to a partial Bandwidth (BWP) of the side link through broadcast signaling (e.g., SIB). For example, BWP-4{ SCS-value 30kHz } indicates that SCS of BWP with index 4 is 30 kHz.
Still alternatively, the base station may also configure the subcarrier spacing corresponding to the resource pool (resource pool) of the side link through broadcast signaling (e.g., SIB). For example, resourcepool-2{ SCS-value 15kHz } indicates that SCS of resource pool with index 2 is 15kHz
In particular implementations, regardless of the subcarrier spacing information of any signal, a value may be selected from the set {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof as the corresponding subcarrier spacing. SCS, in which other values are not introduced, is not excluded.
In a specific implementation, the signal transmitted on the uu link may include: SRS. The subcarrier spacing information may include subcarrier spacing information of the SRS.
3) The cyclic prefix length information may include only the cyclic prefix length information of the MIB, or may include only the cyclic prefix length information of the SIB, or may include both the cyclic prefix length information of the MIB and the cyclic prefix length information of the SIB.
There are two main Cyclic Prefix lengths, namely, Normal Cyclic Prefix (NCP) and Extended Cyclic Prefix (ECP). For example, 1bit is used to indicate that 1 represents ECP and 0 represents NCP, or 0 represents ECP and 1 represents NCP.
4) The maximum transmission power (P _ max _ SL) information of the side link is used for indicating the maximum transmission power used by the UE for transmission of the side link. The UE should not exceed this maximum transmit power when transmitting the reference signal and/or channel on the sidelink.
As an example, the base station may configure different maximum transmit powers for different sidelink channels or reference signals. For example, Pc _ max1 corresponds to the maximum transmit power of the MIB for the sidelink,
pc _ max2 corresponds to the maximum transmission power of SIBs of the side link, and so on to other side link channels or reference signals such as SLSS, SL-SRS, PSDCH, SL-SSB, PSBCH, PSSCH, PSCCH, SL-FC, SL-CSI-RS and SLSS + PSBCH.
As an embodiment, the base station may uniformly configure a maximum transmit power for the side link.
As an example, the base station may configure different maximum transmit powers based on different traffic types or transmission modes. For example, the maximum transmit power for a unicast transmission is Pc _ max 1; the maximum sending power corresponding to the groupcast transmission is Pc _ max 2; the maximum transmit power for broadcast transmission is Pc _ max 3;
or, the maximum transmission power corresponding to the periodic transmission is Pc _ max 4; the maximum transmission power corresponding to the aperiodic transmission is Pc _ max 5; the maximum transmit power for semi-persistent transmission (semi-persistent transmission) is Pc _ max 6.
5) For the cell switching configuration information, at least one of the following indication information may be included: handover threshold information, identification information of a target cell available for handover and identification information of a user group available for handover. When the cell switching configuration information only includes partial information of the indication information, the UE may determine the actual cell switching configuration information in combination with other information of the default protocol.
For example, when the cell handover configuration information only includes handover threshold information, the UE may determine actual cell handover configuration information or user group handover configuration information in combination with the default identification information of the target cell available for handover and the default identification information of the user group available for handover.
In a specific implementation, the handover threshold information may include: frequency point threshold value and signal strength threshold value for switching cell or user group. The identification information of the target cell available for handover may include: the ID information of all target cells that can be used for cell handover, or the ID information of the partial bandwidth or the frequency value of the partial bandwidth. The identification information of the user group available for handover may include at least one of the following indication information: the ID information of all target user groups which can be used for switching the user groups, the ID information of partial bandwidth where the target user groups are located, the frequency value or Cell-ID where the target user groups are located, SCS used by the target user groups on a target frequency point or BWP, and the signal strength threshold for switching the user groups.
6) For the transmission mode information of the side link, the transmission mode of the side link may include: frequency Division Multiplexing (FDM) and Time Division Multiplexing (TDM).
In an embodiment of the present invention, 1bit may be used to indicate the transmission mode of the edge link. For example, bit 1 may indicate that the PSCCH and the PSCCH use a TDM transmission pattern, and in this case, the PSCCH and its scheduled PSCCH do not overlap in the time domain (overlap). Bit 0 indicates that the PSCCH and the PSCCH employ FDM transmission mode, and in this case, the PSCCH and its scheduled PSCCH may overlap in the time domain (may partially overlap or completely overlap).
Alternatively, bit 0 indicates that the PSCCH and PSCCH employ TDM transmission mode, and bit 1 indicates that PSCCH and PSCCH FDM transmission mode is supported.
In another embodiment of the present invention, 2 bits may be used to indicate that the PSCCH and PSCCH employ TDM or FDM transmission modes, or indicate that the PSCCH and PSCCH support TDM and FDM transmission modes simultaneously. For example, bit 00 indicates a transmission mode supporting TDM for PSCCH and PSCCH, bit 01 indicates a transmission mode supporting FDM for PSCCH and PSCCH, bit 10 indicates a transmission mode supporting TDM and FDM for PSCCH and PSCCH simultaneously, and bit 11 may be used as a reserved bit.
If the transmission mode information of the side link is default, the side link can be considered to only support the transmission mode that the PSCCH and the PSSCH adopt TDM; or if the transmission mode information of the side link is default, the side link can be considered to only support the PSCCH and the PSSCH to adopt the FDM transmission mode; or if the transmission mode information of the side link is in default, the side link can be considered to simultaneously support the transmission modes of TDM and FDM for the PSCCH and the PSSCH.
7) The SLSS transmission mode information of the side link includes at least one of the following indication information: the SLSS comprises an offset indication of the SLSS, a period indication information of the SLSS, a transmission power indication information of the SLSS and a time domain indication information of the SLSS. The SLSS may include a PSS and a SSS of the edge link, among others.
Wherein, the offset indication information of the SLSS indicates an offset of the SLSS from an overall resource grid (overall resource block grid), and a unit may be RB or RE. Or the SLSS offset indication indicates an offset of the SLSS from the received broadcast signaling configuration information. Specifically, the RB number may be a positive or negative offset from the minimum RB number of the broadcast signaling configuration information, a positive or negative offset from the maximum RB number of the broadcast signaling configuration information, or a positive or negative offset from the center RB number of the broadcast signaling configuration information.
The period indication information of the SLSS indicates a transmission period of the SLSS.
The SLSS transmit power indication information indicates the transmit power of the sidelink transmitting SLSS. Where the indicated transmit power may be an absolute power, such as dBm. Or may be relative power such as the power ratio of SLSS to PSBCH, such as dB. For example, the transmit power indication for SLSS may be 0 for 23dBm, 1 for 25dBm or 0 for 0dB and 1 for 1 dB.
The time domain indication information of the SLSS indicates a time domain position of the SLSS during a SLSS period. For example, if the SLSS period is 5 slots, the time domain indication information of the SLSS may be 11000, which indicates that the SLSS is only transmitted in the first slot and the second slot.
8) And the SL-SSB (SLSS + PSBCH) transmission mode information of the side link.
The SL-SSB transmission mode information of the side link comprises at least one of the following indication information: the information comprises offset indication information of the SL-SSB, period indication information of the SL-SSB, transmission power indication information of the SL-SSB and time domain indication information of the SL-SSB. The SLSS may include a PSS and a SSS of the edge link, among others. The SL-SSB may contain an SLSS and a PSBCH.
Wherein the offset indication information of the SL-SSB indicates the offset of the SL-SSB from the whole resource grid (overall resource block grid), and the unit can be RB or RE. Or the offset indication of the SL-SSB indicates an offset of the SL-SSB from the received broadcast signaling configuration information. Specifically, the RB number may be a positive or negative offset from the minimum RB number of the broadcast signaling configuration information, a positive or negative offset from the maximum RB number of the broadcast signaling configuration information, or a positive or negative offset from the center RB number of the broadcast signaling configuration information.
The period indication information of the SL-SSB indicates the transmission period of the SL-SSB.
The transmission power indication information of the SL-SSB indicates the transmission power of the side link for transmitting the SLSS. Where the indicated transmit power may be an absolute power, such as dBm. Or may be relative power such as the power ratio of SLSS to PSBCH, such as dB. For example, the transmit power indication for SLSS may be 0 for 23dBm, 1 for 25dBm or 0 for 0dB and 1 for 1 dB.
The time domain indication information of the SL-SSB indicates the time domain position of the SL-SSB transmitted in the SL-SSB period. For example, if the period of the SL-SSB is 5 slots, the time domain indication information of the SL-SSB may be 11000, which indicates that the SL-SSB is transmitted only in the first slot and the second slot.
9) The side link camping indication information may indicate whether the UE may camp on a cell.
As an embodiment, the side link camping indication information may indicate whether the UE may camp on the cell receiving the broadcast signaling configuration information. Wherein the broadcast signaling configuration information may be carried by the SIB.
As an embodiment, the sidelink camping indication information may indicate whether the UE may camp on a part of the bandwidth for receiving the broadcast signaling configuration information. Wherein the broadcast signaling configuration information may be carried by the SIB. As an example of the way in which the device may be used,
as an embodiment, the side link camping indication information may be a bitmap for indicating which cells the UE may camp on, or may indicate which cells the UE may camp on. Where each bit in the bitmap may correspond to a cell. For example, 10011 indicates that the UE may camp on Cell-1, Cell-4, and Cell5, or 10011 indicates that the UE may not camp on Cell-1, Cell-4, and Cell 5.
As an embodiment, the side link camping indication information may be a bitmap for indicating which part of the bandwidth of the current cell the UE may camp on, or indicating which part of the bandwidth of the current cell the UE may not camp on. Wherein each bit in the bitmap may correspond to a partial bandwidth. For example, 0011 indicates that the UE may camp on cells Cell-3 and Cell4, or 0011 indicates that the UE may not camp on cells Cell-3 and Cell 4.
As one embodiment, the sidelink camping indication information may include two fields, the first field representing a Cell ID (Cell-ID) in which the UE may camp. The second field is a bitmap indicating which part of the bandwidth of the cell the UE may camp on, or indicating which part of the bandwidth of the current cell the UE may not camp on. Wherein each bit in the bitmap may correspond to a partial bandwidth. For example, 0011 indicates that the UE may camp on cells Cell-3 and Cell4, or 0011 indicates that the UE may not camp on cells Cell-3 and Cell 4. Or the second field directly gives the ID of the part of the bandwidth where the UE can camp under the cell indicated by the first field.
After receiving the broadcast signaling configuration information, the UE may configure the transmission mode and transmission content of the MIB and/or SIB according to the broadcast signaling configuration information. For example, according to the transmission location information of the broadcast signaling in the broadcast signaling configuration information, the corresponding time and frequency resources are determined, and the determined resources are used to transmit the MIB and/or SIB.
The MIB may include parameter contents such as subcarrier spacing, cyclic prefix length, transmission mode of the side link synchronization signal and the physical side link broadcast channel, and the side link occupied bandwidth, and the SIB may include contents such as maximum transmission power of the side link, transmission mode of the side link, and cell switching configuration. Of course, the transmission contents in the MIB and the SIB may be set in other manners, which is not limited specifically.
The subcarrier spacing parameter may be a subcarrier spacing of an SIB.
The cyclic prefix length parameter may be a cyclic length parameter of an SIB. After receiving the broadcast signaling configuration information, the UE may set values of parameters such as subcarrier spacing, cyclic prefix length, and transmission mode of the sidelink in the MIB to values indicated in the broadcast signaling configuration information, and determine the sidelink occupied bandwidth according to the sidelink bandwidth indication parameter.
For one embodiment, the edge link bandwidth indication parameter may indicate a partial bandwidth sequence number of the edge link. At this time, the side link uses the part of bandwidth indicated by the bandwidth indication parameter of the lower link of the cell receiving the broadcast signaling configuration information to carry out side link communication. The partial bandwidth sequence number may correspond to a frequency domain resource bandwidth size indication and a frequency domain resource start position indication.
As one embodiment, the edge link bandwidth indication parameter may contain two fields. The first field indicates the cell sequence number of the edge link communication. The second field indicates which portion of the bandwidth under the cell indicated by the first field is specifically selected by the edge link for edge link communication.
As an embodiment, the edge link bandwidth indication parameter may indicate a resource pool (resource pool) sequence number of the edge link. At this time, the side link adopts the resource pool indicated by the bandwidth indication parameter of the lower link of the cell receiving the broadcast signaling configuration information to carry out side link communication.
As one embodiment, the edge link bandwidth indication parameter may contain two fields. The first field indicates the cell sequence number of the edge link communication. The second field indicates which resource pool under the cell indicated by the first field is specifically selected by the edge link for edge link communication.
As an embodiment, the edge link bandwidth indication parameter may indicate whether the edge link employs the same partial bandwidth as the partial bandwidth for receiving the broadcast signaling configuration information. For example, if the edge link bandwidth indication parameter is 1, it indicates that the edge link may use a partial bandwidth that is the same as the partial bandwidth for receiving the broadcast signaling configuration information, and 0 indicates not; or 0 indicates that the side link may use the same partial bandwidth as the partial bandwidth for receiving the broadcast signaling configuration information, and 1 indicates no.
In addition, the MIB may also contain subcarrier spacing parameters that may include at least one of SLSS, SL-SRS, PSDCH, SL-SSB, PSBCH, PSSCH, PSCCH, SL-FC, SL-CSI-RS, and SLSS + PSBCH.
Further, the MIB may also contain CP type indication of the sidelink portion bandwidth. The cyclic prefix length mainly has two kinds, namely NCP and ECP. For example, 1bit is used to indicate that 1 represents ECP and 0 represents NCP, or 0 represents ECP and 1 represents NCP.
Further, the MIB may also contain SCS type indication information of the sidelink segment bandwidth. Wherein the SCS type indication information of BWP may be selected from the set 15kHz, 30kHz, 60kHz, 120kHz,
240kHz, 480kHz, or a subset thereof, as the corresponding subcarrier spacing. SCS, in which other values are not introduced, is not excluded.
Further, the MIB may also include side link slot configuration information (slot-ConfigSL). This parameter is used to represent slot configuration information of sidelink, i.e. to instruct UE to determine whether the current slot or symbol is uplink, downlink or flexible (flexible) uplink and downlink. Currently, NR uulink supports cell-specific (cell-specific), UE-specific (UE-specific), and dynamic (dynamic) Slot Format Indicator (SFI) Slot configuration methods.
If the side link UE only receives the time slot configuration of the cell-specific, the UE determines the time slot configuration information of the side link according to the time slot configuration of the cell-specific. If the side link UE receives the time slot configuration of the cell-specific and the UE-specific, the UE determines the time slot configuration information of the side link according to the time slot configuration of the cell-specific and the UE-specific. If the edge link UE receives dynamic SFI, the edge link UE can inform other edge link UE of the current SFI configuration situation through SCI. Specifically, the side link UE may determine the timeslot configuration information of its side link by combining the timeslot configuration information indicated by the dynamic SFI with the timeslot configurations of the cell-specific and the UE-specific, and indicate to receive the side link UE through DCI; the edge link UE may place the slot configuration information indicated by the dynamic SFI in the SCI to indicate the current slot configuration of the receiving edge link UE.
Besides the contents of subcarrier spacing, cyclic prefix length, and transmission mode of the side link, the MIB may further include other parameter contents, such as information whether the UE is located in a cell coverage (Incoverage), side link slot configuration information (slot-ConfigSL), directFrameNumber (for indicating a sequence number of a radio frame for SLs or SL-SSB transmission), and direcbsramenumber (for indicating a sequence number of a symbol for SLs or SL-SSB transmission), and other parameters, which may be specifically implemented with reference to definitions and usage in the V2X protocol in LTE, and are not described herein again.
In a specific implementation, besides the contents such as the maximum transmission power of the side link, the transmission mode of the side link, and the cell switching configuration, the SIB may further include: v2x-CommRxPool (configuration of resource pool for communication under V2X), V2x-commtxpool explicit (configuration of special resource pool for communication under V2X), V2x-SyncConfig (configuration for synchronization under V2X), V2 x-interfreqinfist (configuration for synchronization and resource allocation on adjacent band under V2X), V2x-ResourceSelectionConfig (configuration for resource reselection under V2X), CBR-commotxconfigulist (configuration of transmission parameter associated with CBR), threshsl-txtiming (configuration of side link transmission priority), zoneconconfig (configuration for LTE area under V2X), which can be embodied by referring to definition and usage in V2X protocol in particular, and will not be repeated here.
In addition, when the broadcast signaling configuration information is pre-configuration (pre-configuration), or the UE belongs to a UE out of the coverage of the base station, the UE may configure and transmit the MIB and/or SIB according to the pre-configuration indication information. Wherein the preconfigured indication information at least comprises at least one of the broadcast signaling configuration information.
Compared with the V2X protocol of LTE, the configuration method of the broadcast signaling not only increases corresponding content in the MIB, but also supports SIB, so that the configuration of the broadcast signaling is more flexible, and the requirements of various service types in 5G NR can be met.
In order to make the present invention better understood and realized by those skilled in the art, the following detailed description is provided for a device and a computer readable storage medium corresponding to the above method.
Referring to fig. 2, an embodiment of the present invention provides a terminal 20, where the terminal 20 may include: a receiving unit 21 and a configuration unit 22. Wherein:
the receiving unit 21 is adapted to receive broadcast signaling configuration information;
the configuration unit 22 is adapted to configure the broadcast signaling based on the broadcast signaling configuration information and transmit the broadcast signaling on the side link;
wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling transmission period information is selected from a broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises more than two broadcast signaling transmission period information; the broadcast signaling includes at least MIB.
In an embodiment of the present invention, the broadcast signaling may further include: SIB.
In an embodiment of the present invention, the broadcast signaling configuration information may further include: and transmitting time offset information corresponding to the periodic information of the broadcast signaling.
In an embodiment of the present invention, the broadcast signaling configuration information may further include at least one of the following: transmission location information of the broadcast signaling; subcarrier spacing information; cyclic prefix length information; maximum transmit power information for the side link; cell handover configuration information; and the transmission mode information of the side link.
In an embodiment of the present invention, the transmission location information of the broadcast signaling may include at least one of: identification information of a serving cell in which the broadcast signaling is located; identification information of a part of bandwidth where the broadcast signaling is located; frequency domain location information of the broadcast signaling; time domain location information of the broadcast signaling.
In an embodiment of the present invention, the subcarrier spacing information may include at least one of: subcarrier interval information of the synchronization signal transmitted on the side link; subcarrier interval information of channel sounding reference signals transmitted on the side link; transmitting channel detection reference signals and corresponding subcarrier interval information when the physical side link broadcast channel is transmitted simultaneously on the side link; and subcarrier interval information corresponding to the channel sounding reference signal transmitted on the uu link.
In a specific implementation, the subcarrier spacing included in the subcarrier spacing information is selected from the set {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof.
In a specific implementation, the cell handover configuration information may include at least one of the following: switching threshold information; identification information of a target cell available for handover; identification information of a user group available for handover.
In an embodiment of the present invention, the configuration unit 22 may include: a first configuration subunit 221, adapted to, when the broadcast signaling is MIB, configure the MIB based on the broadcast signaling configuration information and other RRC signaling, and transmit the MIB through a physical edge link broadcast channel.
Further, the MIB may include at least one of the following parameters: a subcarrier spacing parameter; a cycle length type parameter; and the transmission mode parameter of the side link.
In another embodiment of the present invention, the configuration unit 22 may include: a second configuration subunit 222, adapted to configure the SIB based on the broadcast signaling configuration information, and transmit the SIB through a physical edge link shared channel.
Further, the SIB includes at least one of the following parameters: a maximum transmit power parameter for the side link; cell handover configuration parameters; and the transmission mode parameter of the side link.
In a specific implementation, the broadcast signaling configuration information received by the receiving unit 21 is sent by the base station, or is preconfigured.
The embodiment of the present invention further provides another computer-readable storage medium, where a computer instruction is stored, and when the computer instruction runs, the step of performing any one of the above-mentioned broadcast signaling configuration methods in the above-mentioned embodiments is executed, which is not described again.
In particular implementations, the computer-readable storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
The embodiment of the present invention further provides a user terminal, where the user terminal may include a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and when the processor executes the computer instruction, the step of executing any one of the broadcast signaling configuration methods in the above embodiments is performed, which is not described again.
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 (28)

1. A method for configuring broadcast signaling, comprising:
receiving broadcast signaling configuration information;
configuring broadcast signaling based on the broadcast signaling configuration information and transmitting the broadcast signaling on a side link;
wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling at least comprises MIB, and the transmission period information of the broadcast signaling at least comprises the transmission period information of the MIB; the transmission period information of the MIB is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises transmission period information of more than two MIBs.
2. The method of configuring broadcast signaling of claim 1, wherein the broadcast signaling further comprises: the SIB, the transmission period information of the broadcast signaling further includes transmission period information of the SIB, and the transmission period information of the SIB is selected from the preset transmission period set of the broadcast signaling; the set of broadcast signaling transmission periods includes transmission period information for more than two SIBs.
3. The method for configuring broadcast signaling according to claim 1 or 2, wherein the broadcast signaling configuration information further comprises: and transmitting time offset information corresponding to the periodic information of the broadcast signaling.
4. The method for configuring broadcast signaling according to claim 3, wherein the broadcast signaling configuration information further comprises at least one of:
transmission location information of the broadcast signaling;
subcarrier spacing information;
cyclic prefix length information;
maximum transmit power information for the side link;
cell handover configuration information;
transmission mode information of the side link;
transmission mode information of the side link synchronization signal;
side link synchronization signal and transmission mode information of physical side link broadcast channel;
edge link park indication information.
5. The method for configuring broadcast signaling according to claim 4, wherein the transmission location information of the broadcast signaling comprises at least one of:
identification information of a serving cell in which the broadcast signaling is located;
identification information of a part of bandwidth where the broadcast signaling is located;
frequency domain location information of the broadcast signaling;
time domain location information of the broadcast signaling.
6. The method for configuring broadcast signaling according to claim 4, wherein the subcarrier spacing information comprises at least one of: subcarrier spacing information of the broadcast signaling, subcarrier spacing information of the related signals on the side link, and subcarrier spacing information of the related signals on the uu link.
7. The method of configuring broadcast signaling according to claim 6, wherein the subcarrier spacing included in the subcarrier spacing information is selected from a set of {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof.
8. The method for configuring broadcast signaling according to claim 4, wherein the cell switching configuration information comprises at least one of:
switching threshold information;
identification information of a target cell available for handover;
identification information of a user group available for handover.
9. The method for configuring broadcast signaling according to claim 4, wherein when the broadcast signaling is MIB, the configuring broadcast signaling based on the broadcast signaling configuration information and transmitting on side link includes:
configuring the MIB based on the broadcast signaling configuration information and other signaling;
and transmitting the MIB through a physical side link broadcast channel.
10. The method of configuring broadcast signaling according to claim 9, wherein the MIB comprises at least one of the following parameters:
a subcarrier spacing parameter;
a cycle length type parameter;
configuring parameters of side link time slots;
a transmission mode parameter of the side link synchronization signal;
the transmission mode parameters of the side link synchronous signal and the physical side link broadcast channel;
and the transmission mode parameter of the side link.
11. The method for configuring broadcast signaling of claim 4, wherein when the broadcast signaling is a SIB, the configuring broadcast signaling based on the broadcast signaling configuration information and transmitting on a side link comprises:
configuring the SIB based on the broadcast signaling configuration information;
and transmitting the SIB through a physical side link shared channel.
12. The method of configuring broadcast signaling of claim 11, wherein the SIB includes at least one of the following parameters:
a maximum transmit power parameter for the side link;
cell handover configuration parameters;
and the transmission mode parameter of the side link.
13. The method for configuring broadcast signaling according to claim 1, wherein the broadcast signaling configuration information is transmitted by a base station or is pre-configured.
14. A terminal, comprising:
a receiving unit adapted to receive broadcast signaling configuration information;
a configuration unit adapted to configure a broadcast signaling based on the broadcast signaling configuration information and transmit on a side link;
wherein, the broadcast signaling configuration information at least comprises broadcast signaling transmission period information; the broadcast signaling at least comprises MIB, and the transmission period information of the broadcast signaling at least comprises the transmission period information of the MIB; the transmission period information of the MIB is selected from a preset broadcast signaling transmission period set, and the broadcast signaling transmission period set comprises transmission period information of more than two MIBs.
15. The terminal of claim 14, wherein the broadcast signaling further comprises: the SIB, the transmission period information of the broadcast signaling further includes transmission period information of the SIB, and the transmission period information of the SIB is selected from the preset transmission period set of the broadcast signaling; the set of broadcast signaling transmission periods includes transmission period information for more than two SIBs.
16. The terminal of claim 14 or 15, wherein the broadcast signaling configuration information further comprises: and transmitting time offset information corresponding to the periodic information of the broadcast signaling.
17. The terminal of claim 16, wherein the broadcast signaling configuration information further comprises at least one of:
transmission location information of the broadcast signaling;
subcarrier spacing information;
cyclic prefix length information;
maximum transmit power information for the side link;
cell handover configuration information;
transmission mode information of the side link;
transmission mode information of the side link synchronization signal;
side link synchronization signal and transmission mode information of physical side link broadcast channel;
edge link park indication information.
18. The terminal of claim 17, wherein the transmission location information of the broadcast signaling comprises at least one of:
identification information of a serving cell in which the broadcast signaling is located;
identification information of a part of bandwidth where the broadcast signaling is located;
frequency domain location information of the broadcast signaling;
time domain location information of the broadcast signaling.
19. The terminal of claim 17, wherein the subcarrier spacing information comprises at least one of: subcarrier spacing information of the broadcast signaling, subcarrier spacing information of the related signals on the side link, and subcarrier spacing information of the related signals on the uu link.
20. The terminal of claim 19, wherein the subcarrier spacing included in the subcarrier spacing information is selected from a set {15kHz, 30kHz, 60kHz, 120kHz, 240kHz, 480kHz } or a subset thereof.
21. The terminal of claim 17, wherein the cell handover configuration information comprises at least one of:
switching threshold information;
identification information of a target cell available for handover;
identification information of a user group available for handover.
22. The terminal of claim 17, wherein the configuration unit comprises:
and the first configuration subunit is suitable for configuring the MIB based on the broadcast signaling configuration information and other signaling when the broadcast signaling is the MIB, and transmitting the MIB through a physical side link broadcast channel.
23. The terminal of claim 22, wherein the MIB comprises at least one of the following parameters:
a subcarrier spacing;
a cycle length type;
configuring parameters of side link time slots;
a transmission mode parameter of the side link synchronization signal;
the transmission mode parameters of the side link synchronous signal and the physical side link broadcast channel;
and the transmission mode of the side link.
24. The terminal of claim 17, wherein the configuration unit comprises:
a second configuration subunit adapted to configure the SIB based on the broadcast signaling configuration information and transmit the SIB through a physical edge link shared channel.
25. The terminal of claim 24, wherein the SIB includes at least one of the following parameters:
maximum transmit power of the side link;
cell switching configuration;
and the transmission mode of the side link.
26. The terminal of claim 14, wherein the broadcast signaling configuration information received by the receiving unit is transmitted by a base station or is pre-configured.
27. A computer readable storage medium having computer instructions stored thereon for performing the steps of the method of any one of claims 1 to 13 when the computer instructions are executed.
28. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor, when executing the computer instructions, performs the steps of the method of any one of claims 1 to 13.
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