WO2017177977A1 - 一种系统信息的发送方法和装置 - Google Patents

一种系统信息的发送方法和装置 Download PDF

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Publication number
WO2017177977A1
WO2017177977A1 PCT/CN2017/080617 CN2017080617W WO2017177977A1 WO 2017177977 A1 WO2017177977 A1 WO 2017177977A1 CN 2017080617 W CN2017080617 W CN 2017080617W WO 2017177977 A1 WO2017177977 A1 WO 2017177977A1
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Prior art keywords
system information
subframe
drs
information
configuration
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PCT/CN2017/080617
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English (en)
French (fr)
Inventor
徐汉青
赵亚军
莫林梅
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中兴通讯股份有限公司
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Priority to EP17781953.9A priority Critical patent/EP3444988B1/en
Publication of WO2017177977A1 publication Critical patent/WO2017177977A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/0006Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0092Indication of how the channel is divided
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/16Discovering, processing access restriction or access information

Definitions

  • This document relates to, but is not limited to, the field of wireless communication technologies, and in particular, to a method and apparatus for transmitting system information.
  • LTE-U Long Term Evolution – Unlicensed refers to LTE (Long Term Evolution) deployed in unlicensed carriers to meet the increasing capacity requirements of wireless communication systems and improve non-authorization.
  • the efficiency of spectrum usage is an important evolutionary direction for LTE and future wireless communications.
  • LTE-U it is necessary to consider how to conduct data transmission with a fair and friendly competitive unlicensed carrier between the different systems such as WiFi and radar and the same system of LTE-U, and it is necessary to not affect and retain the LTE technical characteristics as much as possible.
  • the LTE-U system in the Rel-13/14 version may also be referred to as an LAA (LTE Licensed Assisted Access to Unlicensed Spectrum) system.
  • LAA LTE Licensed Assisted Access to Unlicensed Spectrum
  • the unlicensed carrier in the 3GPP LTE Rel-13/14 version adopts a CA (Carrier Aggregation) (including the subsequent possible DC (Dual Connectivity) mode), and assists the carrier to access the unlicensed carrier.
  • the PBCH Physical Broadcast Channel
  • the PBCH is usually used to carry some important system information, such as the bandwidth information, the PHICH (Physical Hybrid-ARQ Indicator Channel) configuration information, and the SFN (System Frame Number) information. It takes 8 bits in the system information block, and the other 2 bits are obtained by blind detection.
  • the system information of the unlicensed carrier cell is necessary for the user equipment (UE).
  • UE user equipment
  • This paper provides a method and device for transmitting system information, which can solve the problem of sending information of system information.
  • An embodiment of the present invention provides a method for sending system information, where the method includes:
  • the common subframe is configured to send the determined system information and the discovery reference signal DRS, or send the extended DRS including the determined system information; the common subframe includes one or more subframes. .
  • the sending the determined system information on a common subframe includes:
  • the configuration includes at least one of the following: a transmission configuration of a common subframe, a transmission configuration of system information and DRS, and a pattern configuration of system information.
  • the sending configuration of the common subframe includes at least one of the following parameters: period, offset, duration.
  • the sending configuration of the system information and the DRS includes:
  • a part of the system information is configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information is independently configured with at least one of the following parameters: period, offset, duration, subframe position.
  • the sending configuration of the system information and the DRS includes:
  • the following at least one parameter is configured between the system information and the DRS: cycle, offset, hold Continued time; or
  • the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, subframe position; or
  • a part of the system information and the DRS are configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, sub- Frame position.
  • a constraint relationship exists between the configuration parameter of the first information and the configuration parameter of the second information
  • the configuration parameter is a period, there is a multiple relationship between the period of the first information and the period of the second information;
  • the first information and the second information are different system information, respectively, or the first information is system information, and the second information is DRS.
  • the common subframe includes any one of the following:
  • the determined system information sent by the cell includes at least one of the following information:
  • the cell is an unlicensed carrier cell.
  • the unlicensed carrier cell includes: a secondary cell Scell of a carrier aggregation CA scenario, or a primary secondary cell PSCell or a secondary cell Scell of a dual-linked DC scenario, or an unlicensed carrier cell of an independent communication Standalone scenario.
  • the sending the determined system information on a common subframe includes:
  • the determined system information is transmitted in any one of the idle subframes in the common subframe.
  • the idle subframe that sends the determined system information is the nth idle subframe in the common subframe; n is a preset value.
  • the sending the determined system information on a common subframe includes:
  • Determining an idle subframe for transmitting the system information in a common subframe includes:
  • the idle subframe for transmitting the system information is determined according to at least one of a common subframe configuration, an LBT result and a system information transmission policy.
  • the pattern configuration of the system information includes at least one of the following manners:
  • the pattern configuration of the system information includes at least one of the following manners:
  • the sending the determined system information on a common subframe includes:
  • a scrambling sequence of system information is generated using at least one of the following:
  • the method further includes:
  • Transmission configuration of common subframes transmission configuration of system information and DRS, pattern configuration of system information, system information, and measurement configuration of DRS.
  • the invention also provides a device for transmitting system information, comprising:
  • Setting a module, configured to determine system information sent by the cell
  • a sending module configured to send the determined system information on a common subframe
  • the common subframe is configured to send the determined system information and the discovery reference signal DRS, or send the extended DRS including the determined system information; the common subframe includes one or more subframes. .
  • the sending module is configured to send the determined system information on the common subframe in the following manner:
  • the configuration includes at least one of the following: a transmission configuration of a common subframe, a transmission configuration of system information and DRS, and a pattern configuration of system information.
  • the sending configuration of the common subframe includes at least one of the following parameters: period, offset, duration.
  • the sending configuration of the system information and the DRS includes:
  • a part of the system information is configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information is independently configured with at least one of the following parameters: period, offset, Duration, subframe position.
  • the sending configuration of the system information and the DRS includes:
  • the system information and the DRS are configured with the same at least one of the following parameters: period, offset, duration; or
  • the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, subframe position; or
  • a part of the system information and the DRS are configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, sub- Frame position.
  • a constraint relationship exists between the configuration parameter of the first information and the configuration parameter of the second information
  • the configuration parameter is a period, there is a multiple relationship between the period of the first information and the period of the second information;
  • the first information and the second information are different system information, respectively, or the first information is system information, and the second information is DRS.
  • the common subframe includes any one of the following:
  • the determined system information sent by the cell includes at least one of the following information:
  • the cell is an unlicensed carrier cell.
  • the unlicensed carrier cell includes: a secondary cell Scell of a carrier aggregation CA scenario, or a primary secondary cell PSCell or a secondary cell Scell of a dual-linked DC scenario, or an unlicensed carrier cell of an independent communication Standalone scenario.
  • the sending module is configured to send the determined system information on the common subframe in the following manner:
  • the determined system information is transmitted in any one of the idle subframes in the common subframe.
  • the idle subframe that sends the determined system information is the nth idle subframe in the common subframe; n is a preset value.
  • the sending module is configured to send the determined system information on the common subframe in the following manner:
  • Determining an idle subframe for transmitting the system information in a common subframe includes:
  • the idle subframe for transmitting the system information is determined according to at least one of a common subframe configuration, an LBT result and a system information transmission policy.
  • the pattern configuration of the system information includes at least one of the following manners:
  • the pattern configuration of the system information includes at least one of the following manners:
  • the sending module is configured to send the determined system information on the common subframe in the following manner:
  • a scrambling sequence of system information is generated using at least one of the following:
  • the device further includes:
  • the notification module is configured to notify at least one of the following information to the user terminal by using the radio resource control RRC signaling or the downlink control information DCI:
  • Transmission configuration of common subframes transmission configuration of system information and DRS, pattern configuration of system information, system information, and measurement configuration of DRS.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.
  • a method and an apparatus for transmitting system information provided by an embodiment of the present invention effectively solve various scenarios by encapsulating and transmitting various necessary system information and a discovery reference signal DRS on a common subframe.
  • FIG. 1 is a flowchart of a method for transmitting system information according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a system for transmitting system information according to an embodiment of the present invention.
  • an embodiment of the present invention provides a method for sending system information, where the method includes:
  • the common subframe is configured to send the determined system information and the discovery reference signal DRS, or send the extended DRS including the determined system information;
  • the common subframe includes one or more subframes
  • the DRS generally refers to the DRS before the extension, that is, the DRS that does not contain the system information. In particular, it refers to the discovery signal defined in the 3GPP Rel-12/Rel-13 36.211 protocol.
  • the extended DRS can be composed of the system information and the pre-expansion DRS.
  • the system information sent by the cell may include: part or all of the MIB (Master Information Block) or the physical broadcast channel PBCH, and/or part or all of the System Information Block (SIB). Information, and/or some other system information;
  • MIB Master Information Block
  • SIB System Information Block
  • the part or all of the information in the MIB or the PBCH for example, the downlink bandwidth, the physical hybrid automatic repeat request indication channel PHICH configuration information, and the system frame number SFN information.
  • Part or all of the information in the system information block SIB such as some or all of SIB1, and/or SIB2, and/or SIB3 to SIB13.
  • Part or all of the system information in the specific SIB such as the downlink subframe configuration in the TDD mode, the special subframe configuration, the random access parameter, the SIB scheduling information, and the like.
  • subframe number and/or carrier ID
  • subframe/frame structure information and/or occupancy duration or number of occupied symbols, and the like.
  • the sending the determined system information on a common subframe includes:
  • the configuration includes at least one of the following: a transmission configuration of a common subframe, system information, and DRS transmission configuration, system information pattern configuration.
  • the sending configuration of the common subframe includes at least one of the following parameters: period, offset, duration.
  • system information may be used as a component of the DRS or accompanied by the DRS;
  • the system information may be transmitted in a DRS subframe, or a subframe of the DRS and an adjacent subframe of the DRS subframe, or a discovery reference signal measurement timing configuration DMTC subframe.
  • the downlink bandwidth/physical hybrid automatic repeat request indication channel PHICH configuration/SFN information transmission frequency requirement in MIB, and the TDD mode uplink and downlink in SIB1 The transmission frequency requirement of the subframe configuration information, the transmission frequency requirement of the DRS signal that is dependent on the synchronization and RRM (Radio Resource Management) measurement requirements, and the requirements corresponding to the transmission frequency requirements are different. Therefore, the cell transmitting different system information and transmitting DRS configuration information (including at least one of the following: cycle, duration, offset) can be adjusted for different needs.
  • the transmission of different information in the system information may be configured independently, or in a combined configuration, or a hybrid configuration; and/or, the information in the system information and the transmission of the DRS may be configured independently, in a combined configuration, or in a hybrid configuration.
  • the independently configured parameters include at least one of the following parameters: period, offset, duration, subframe/symbol position;
  • the relationship definition may be a multiple relationship.
  • the DRS period is a multiple of the system information period; or, the system information period is a multiple of the DRS period; or, the period of the system information 1 is a multiple of the period of the system information 2.
  • the configuration parameter is a subframe position, for example, the system information 1 is located in a subframe in which the DRS is transmitted; or, the DRS is located in a subframe in which the system information 1 is transmitted; Alternatively, the system information 1 is located in a subframe in which the system information 2 is transmitted.
  • the parameter of the combined configuration includes at least one of the following parameters: a period, an offset, and a duration;
  • the unified configuration can be configured to the same parameters.
  • the period of the common subframe can be configured to be 40ms, 80ms, 160ms; the duration can be configured from 1 subframe to 5 subframes; and in each duration duration of each period, different system information and DRS can have different configurations.
  • subframe information for example: DRS is sent one or more times in one cycle, or system information 1 can be sent one or more times.
  • the above subframe/symbol position refers to a position or a position of a symbol of a subframe in which the system information is transmitted on a common subframe.
  • system information can be transmitted on every subframe on a common subframe, or the subframe position of system information on a common subframe is configurable.
  • Another method is to define the subframe position of the system information or the subframe position on the common subframe, and the system information can only be transmitted on the subframes of these special locations.
  • system information 1 can be defined to be transmitted in the first or nth subframe on a common subframe.
  • the defined system information 1 is transmitted on subframes 0, 5, 4, 9, 1 or 6 on the common subframe.
  • the subframe number here is numbered according to subframes within one radio frame, but these subframes need to be located on a common subframe.
  • symbol positions system information 1 can be defined to be transmitted on the nth or symbols on the subframe.
  • the DMTC cycle in 3GPP Rel-12/13 is 40/80/160ms, duration The duration is 6ms and the offset is 0 ⁇ (period-1)ms.
  • the common subframe may be equivalent to a DMTC subframe, or a DMTC subframe modified for the above parameters (period, offset, and/or duration), or a newly defined subframe (with period, offset, and / Or configuration parameters such as duration).
  • a common subframe is a newly defined subframe, and in particular, a common subframe has a set of independent configuration parameters.
  • the sending configuration parameters of the common subframe and/or the corresponding measurement configuration parameters may be notified to the UE by the base station.
  • the measurement configuration parameters can be the same as the send configuration parameters or a subset of the send configuration parameters.
  • Measurement configuration parameters include measurement period, measurement offset, and/or duration of measurement.
  • the base station can be notified through high layer signaling (such as RRC) or through physical layer channel or signaling DCI (Downlink Control Information).
  • the period, offset, and/or duration of a common subframe may be equal to the period, offset, and/or duration of the DMTC. That is, the common subframe is the DMTC subframe.
  • the DMTC subframe is set to transmit the system information and a common subframe of the DRS.
  • the UE assumes that the system information and/or DRS will be received on a common subframe (DMTC subframe).
  • the configuration of the existing DMTC subframe is enhanced, and the enhanced DMTC subframe is a common subframe. Specifically include:
  • the common subframe In order to accommodate different system information transmission requirements longer or shorter than the above period, the common subframe (DMTC subframe) needs to support more periodic configurations, for example, the period of the common subframe (DMTC subframe) is 10/20/ 40/80/160/320/640ms.
  • the configuration of the DMTC subframe is limited, including:
  • the period, offset or duration of the DMTC subframe is limited.
  • the limit offset is 0, 5, 1, 6, 4, and/or 9, ensuring that system information 1 can be in subframe 0, subframe 5, subframe 1, subframe 6, subframe 4, and / or send on subframe 9.
  • the cycle, offset and/or duration of the common subframe is compatible with the existing system information transmission method, the UE reception is simpler and feasible.
  • the value is limited.
  • the limit offset is 0, 5, 1, 6, 4, and/or 9, ensuring that system information can be in subframe 0, subframe 5, subframe 1, subframe 6, subframe 4, and / or send on subframe 9.
  • the transmission of the above system information and DRS is also limited by whether the channel is idle and the channel conditions.
  • the offset is assumed to be zero.
  • the period of system information 1 can be set to 20 ms
  • the period of system information 2 can be 320 ms
  • the period of DRS can be set to 40 ms.
  • all system information and DRS can be set to a uniform period, such as 40ms.
  • the period of system information 1 can be set to 20ms, and all other system information and DRS periods are set to 40ms.
  • the common subframe includes any one of the following:
  • the determined system information sent by the cell includes at least one of the following information:
  • the cell is an unlicensed carrier cell.
  • the unlicensed carrier cell includes: a secondary cell Scell (Secondary Cell) in a carrier aggregation CA scenario, or a primary and secondary cell PSCell (Primary SCell) or a secondary cell Scell in a dual-linked DC scenario, or Unlicensed carrier cell for independent communication Standalone scenario.
  • a secondary cell Scell Secondary Cell
  • Primary and secondary cell PSCell Primary SCell
  • a secondary cell Scell in a dual-linked DC scenario
  • Unlicensed carrier cell for independent communication Standalone scenario Unlicensed carrier cell for independent communication Standalone scenario.
  • the sending the determined system information on a common subframe includes:
  • the determined system information is transmitted in any one of the idle subframes in the common subframe.
  • the sending the determined system information on a common subframe includes:
  • Determining an idle subframe for transmitting the system information in a common subframe includes:
  • the idle subframe for transmitting the system information is determined according to at least one of a common subframe configuration, an LBT result and a system information transmission policy.
  • the pattern configuration of the system information includes at least one of the following manners:
  • the method for transmitting the determined system information in a common subframe, in the at least one of the following manners, is to send the system information to improve the performance of the edge UE or the poor channel environment.
  • the sending the determined system information on a common subframe includes:
  • a scrambling sequence of system information is generated using at least one of the following:
  • Transmission configuration of common subframes transmission configuration of system information and DRS, pattern configuration of system information, system information, and measurement configuration of DRS.
  • the method further includes:
  • Part of the system information of the unlicensed carrier cell is determined to be sent by the authorized carrier cell, or sent by other unlicensed carrier cells;
  • the downlink bandwidth and/or PHICH configuration information may be transmitted by the authorized carrier cell, and the SFN is transmitted by the unlicensed carrier cell.
  • the system information of the unlicensed carrier cell SCell in the SeNB or the SCG may be sent by other unlicensed carrier cells (for example, PSCell);
  • the authorized carrier cell may be an authorized carrier cell PCell (Primary Cell) in the CA scenario, or an authorized carrier in the MeNB (Master eNodeB, the primary cell group) or the MCG (Master cell group) Community
  • the sending by the unlicensed carrier cell, the determined system information, including:
  • the determined system information is transmitted by any idle subframe within the DMTC found at the reference signal measurement timing. That is, it is not limited to transmitting the determined system information in the first subframe of each radio frame.
  • the UE may assume that any of the idle subframes within the DMTC may receive the determined system information. That is, it is not limited to receiving the determined system information in the first subframe of each radio frame.
  • the idle subframe refers to a subframe in which the base station or the UE discovers that the unlicensed carrier is not occupied by other devices by performing channel sensing or energy detection on the unlicensed carrier in advance.
  • the idle subframe does not exclude the fact that the cell simultaneously transmits signals or channels such as DRS or PDSCH.
  • the idle subframe is a base station or the UE determines that the unlicensed carrier can be used by the cell in the subframe by performing channel awareness or energy detection on the unlicensed carrier.
  • the embodiment of the present invention describes a LAA (LTE Authorized Carrier Assisted Access) system as a typical application of an unlicensed carrier system.
  • LAA LTE Authorized Carrier Assisted Access
  • the Cell Reference Signal CRS
  • PSS/SSS Primary Synchronization Signal/Secondary Synchronization Signal
  • DRS discovery reference signal
  • the discovery signal with reference to 3GPP Rel-13 TS 36.211
  • RRM radio resource management
  • the base station In order to implement such signal reception and measurement behavior of the UE, the base station needs to configure a signal measurement timing configuration for the UE, such as a DRS measurement timing configuration (DMTC).
  • DMTC DRS measurement timing configuration
  • the base station transmits a corresponding signal according to the signal measurement timing configuration.
  • the base station first determines the transmission pattern of the signal, and then determines the signal measurement timing configuration on the UE side according to the transmission pattern.
  • the DMTC has a period of 40/80/160 ms and a duration of 6 ms.
  • DRS has a higher priority of Listening Before Talk (LBT). It only needs to listen to a time interval of not less than X us (such as 25us), and the base station can send DRS.
  • the DRS includes CRS, PSS/SSS, and configurable CSI-RS (Channel State Information Reference Symbol), occupying 12 OFDM (Orthogonal Frequency Division Multiplexing) symbols (including some of which are undefined). A blank symbol that can be used to send an undefined signal).
  • the existing PBCH period carrying the MIB system information is 40 ms, and the first subframe of each radio frame within 40 ms is transmitted. Since the PBCH carries the same information bit in 4 transmissions in 40 ms, it can be decoded by itself each time. Therefore, in the case that the channel quality is good, the UE may only need to receive one of the 40ms, and the content of the PBCH can be successfully decoded. If it is unsuccessful, it is soft combined with the content of the PBCH received in the next 10ms. The decoding is performed again until the PBCH is successfully decoded.
  • Part or all of the system information of the unlicensed carrier cell may be sent as a component of the DRS Sending, and/or, part or all of the system information of the unlicensed carrier cell may be sent with the DRS;
  • the system information can be transmitted in any one of the free subframes in the common subframe. That is, it is not limited to being transmitted in the first subframe of each radio frame.
  • which subframe transmission on the radio frame may also depend on the common subframe configuration, the LBT result, and/or the system information transmission policy.
  • the system information refers in particular to some or all of the information (downlink bandwidth, and/or PHICH configuration, and/or SFN) in the master information block MIB.
  • the sending of the system information is independent of the sending of other information in the DRS; or the sending of the system information is bound to the sending of other information in the DRS;
  • system information when system information is transmitted as a component of DRS, there are two ways: First, each time a DRS is transmitted, the system information is not necessarily transmitted, and the transmission of system information is configurable. Second, as long as the DRS is sent, the system information is sent.
  • the system information is transmitted along with the DRS, there are two ways: The first one: each time the DRS is transmitted, the system information is not necessarily transmitted, and the transmission of the system information is configurable. Second, as long as the DRS is sent, the system information is sent.
  • the middle 72 subcarriers occupying the system bandwidth in the frequency domain, and the first four symbols occupying the second time slot of the sending subframe in the time domain; or the middle of the system bandwidth occupied in the frequency domain 72 subcarriers
  • the time domain does not limit whether to occupy the first four symbols of the second slot of the transmission subframe; or, the frequency domain does not limit whether the middle 72 subcarriers occupy the system bandwidth, and the transmission subframe is occupied in the time domain.
  • the first four symbols of the second time slot; or, the above limitation is not applied to the frequency domain and the time domain.
  • the system information may be sent in any one of the idle subframes in the common subframe, occupying the middle 72 subcarriers of the system bandwidth in the frequency domain, and occupying the first four symbols of the second slot of the transmitting subframe in the time domain; or
  • the system information may be sent in any idle subframe in the common subframe, occupying the middle 72 subcarriers of the system bandwidth in the frequency domain, and does not limit the first four symbols occupying the second slot of the transmitting subframe in the time domain. For example, four or more locations in the time domain that can occupy other locations of the transmitted subframe (except OFDM symbols other than four. The occupation of 4 symbols is coded and mapped according to the conventional MIB information bit.
  • the system information herein may only include part or all of the MIB information, so it may be mapped onto one or more OFDM symbols.
  • the DRS currently occupies the symbol 0/4/5/6/7/11 of the transmission subframe, and the configurable symbol 9/10 is used to transmit the CSI-RS, so the system information can occupy the DRS subframe.
  • the system information does not include downlink bandwidth information, and includes only PHICH configuration, and/or SFN.
  • the system information when transmitted along with DRS or transmitted as a component of the DRS, it may not be limited to the intermediate 72 subcarriers mapped to the system bandwidth. Further, it can be mapped to more frequency domain resources of the system bandwidth, and even mapped to full bandwidth.
  • the transmission limit is small, and more RE elements (resource elements) can carry system information, that is, can transmit more bit system information, and can also solve the rule requirements of system bandwidth occupation.
  • the time domain may be sent on the first four symbols of the second time slot of the sending subframe in a conventional manner, or may be four, one or more at other positions of the transmitting subframe (except Sending on OFDM symbols other than four;
  • System information can be sent in any of the free subframes within a common subframe. Not limited to the first subframe of each radio frame. Further, it may be defined that the nth (n is a preset value) idle subframe transmission system information in the common subframe or the DMTC, where n may be equal to 1.
  • Method 1 Modify the minimum period of the common subframe or DMTC to adapt to the way the system information is sent.
  • modify the common subframe or DMTC period to 10ms.
  • the process of encoding, rate matching, scrambling, and modulation of the traditional BCH (Broadcast Channel) or MIB information can be changed without changing, and still mapped to four radio frames within 40 ms. Which subframe transmission on each radio frame depends on the common subframe configuration, the LBT result, or the transmission policy.
  • system information may be transmitted in a first available or idle subframe within a common subframe or DMTC.
  • the scrambling code on each subframe on each radio frame is the same, and is the same as the conventional radio frame scrambling code. Therefore, the UE still obtains the last two bits of the SFN by blindly checking 40 ms timing. Such as If the channel is not heard on the radio frame, the PBCH is not transmitted on the radio frame.
  • the common subframe is a DMTC subframe
  • the DMTC period is 10 ms
  • the offset is 2 ms
  • the DMTC interval is 2-7 ms, 12-17 ms, 22-27 ms, 32-37 ms, ..., and the like.
  • the first idle subframe of the DMTC section is subframe 2, subframe 13, subframe 22, and subframe 34
  • system information may be transmitted in the subframe.
  • the system information carried by these sub-frames is the same. That is, the information within 40 ms may be the same, and the SFN between 40 ms is different. If there are no idle subframes in the DMTC, the system information is not sent during this period.
  • the last two bits of the SFN do not need to be obtained by the UE blind detection 40 ms timing, and the explicit coding is in the system information, that is, the SFN includes 10 bits (the SFN in the existing MIB is only 8 bits, and the lowest 2 bits pass the UE blind detection). 40ms timing is obtained), all 10bits participate in the coding and mapping of system information.
  • the scrambling sequence initialization of the system information (or initialization of the pseudo-random sequence) c init (refer to Section 6.6.1 of 3GPP Protocol 36.211) is no longer generated once in 40 ms.
  • c init can be bound to a slot number or a subframe number. For example, the following method is used:
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframe 0-4 is the same as the subframe 0;
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframe 5-9 is the same as the subframe 5;
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframes 0-9 is the same as the subframe 0; or the pseudo random sequence or the scrambling sequence of the system information transmitted in the subframes 0-9 is the same as the subframe 5;
  • Method 2 The DMTC period is unchanged, still 40/80/160ms. Within one cycle, there is only one DMTC occasion (6ms). Therefore, it is not feasible to transmit traditional BCH or MIB information on four radio frames within 40 ms. Therefore, it is necessary to modify the above coding mapping method. There are 2 options as follows:
  • the first one is that the process of coding and modulation of BCH or MIB information can be changed without changing, and still mapped to four radio frames within 40 ms, but according to the DMTC configuration, these four radio frames are unlikely to be successfully transmitted. Therefore, it can be sent once or twice on these four radio frames.
  • the reason you can send twice is that the DMTC can span two radio frames.
  • the system information on the radio frame or subframe outside the DMTC may not be transmitted, or may be transmitted after the channel is idle by a conventional LBT (fast LBT method different from DRS).
  • the MIB information such as the SFN
  • the MIB information (downlink bandwidth, and/or PHICH configuration, and/or SFN) in the DRS or DRS can be sent multiple times in the DMTC. If the subframe in which the MIB information in the DRS or DRS is transmitted belongs to the same radio frame, the SFN is the same. If the subframe in which the MIB information in the DRS or DRS is transmitted does not belong to the same radio frame, the SFN is different.
  • the second option is that the system information can be sent or repeatedly transmitted in multiple subframes in the DMTC to ensure the robustness of system information transmission.
  • multiple subframes on the same radio frame need to use the same scrambling code or use a scrambling code that is not bundled with the radio frame number.
  • the DMTC period is 10 ms and the offset is 2 ms
  • the DMTC interval is 2-7 ms, 12-17 ms, 22-27 ms, 32-37 ms, ..., and the like.
  • the system information can be mapped to 4 or more subframes of the interval for repeated transmission, but the existing scrambling code cannot be used. Otherwise, the UE considers the 4 subframes to belong to the fourth subframe. A different radio frame, causing confusion.
  • 4 radio frames within 40 ms should use different scrambling codes.
  • Method 3 The last two bits of the SFN use the idle bit of the PBCH, or all the bits of the SFN (including the 8-bit in the MIB and the 2-bit in the implicit transmission) are coded and mapped in the system information or the DRS. The code determines the last 2 bits.
  • c init can be bound to a slot number or a subframe number. For example, the following method is used:
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframe 0-4 is the same as the subframe 0;
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframe 5-9 is the same as the subframe 5;
  • the pseudo random sequence or the scrambling code sequence of the system information transmitted in the subframes 0-9 is the same as the subframe 0; or the pseudo random sequence or the scrambling sequence of the system information transmitted in the subframes 0-9 is the same as the subframe 5;
  • an embodiment of the present invention provides a system for sending system information, including:
  • the setting module 201 is configured to determine system information sent by the cell
  • the sending module 202 is configured to send the determined system information on a common subframe.
  • the common subframe is configured to send the determined system information and the discovery reference signal DRS, or send the extended DRS including the determined system information; the common subframe includes one or more subframes. .
  • the sending module 202 is configured to send the determined system information on a common subframe in the following manner:
  • the configuration includes at least one of the following: a transmission configuration of a common subframe, a transmission configuration of system information and DRS, and a pattern configuration of system information.
  • the sending configuration of the common subframe includes at least one of the following parameters: period, offset, duration.
  • the sending configuration of the system information and the DRS includes:
  • a part of the system information is configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information is independently configured with at least one of the following parameters: period, offset, duration, subframe position.
  • the sending configuration of the system information and the DRS includes:
  • the system information and the DRS are configured with the same at least one of the following parameters: period, offset, duration; or
  • the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, subframe position; or
  • a part of the system information and the DRS are configured with the same at least one of the following parameters: period, offset, duration, and another part of the system information and the DRS are independently configured with at least one of the following parameters: period, offset, duration, sub- Frame position.
  • the configuration parameter is a period, there is a multiple relationship between the period of the first information and the period of the second information;
  • the first information and the second information are different system information, respectively, or the first information is system information, and the second information is DRS.
  • the common subframe includes any one of the following:
  • the determined system information sent by the cell includes at least one of the following information:
  • the cell is an unlicensed carrier cell.
  • the unlicensed carrier cell includes: a secondary cell Scell in a carrier aggregation CA scenario, or a primary secondary cell PSCell or a secondary cell Scell in a dual-linked DC scenario, or an unlicensed carrier cell in an independent communication Standalone scenario.
  • the sending module 202 is configured to send the determined system information on a common subframe in the following manner:
  • the determined system information is transmitted in any one of the idle subframes in the common subframe.
  • the idle subframe that sends the determined system information is the nth idle subframe in the common subframe; n is a preset value.
  • the sending module 202 is configured to send the determined system information on a common subframe in the following manner:
  • Determining an idle subframe for transmitting the system information in a common subframe includes:
  • the idle subframe for transmitting the system information is determined according to at least one of a common subframe configuration, an LBT result and a system information transmission policy.
  • the pattern configuration of the system information includes at least one of the following manners:
  • the pattern configuration of the system information includes at least one of the following manners:
  • the sending module 202 is configured to send the determined system information on a common subframe in the following manner:
  • a scrambling sequence of system information is generated using at least one of the following:
  • the device further comprises:
  • the notification module 203 is configured to notify at least one of the following information to the user terminal by using the radio resource control RRC signaling or the downlink control information DCI:
  • Transmission configuration of common subframes transmission configuration of system information and DRS, pattern configuration of system information, system information, and measurement configuration of DRS.
  • an embodiment of the present invention further provides a computer readable storage medium storing computer executable instructions, which are implemented when executed by a processor.
  • computer storage medium includes volatile and nonvolatile, implemented in any method or technology for storing information, such as computer readable instructions, data structures, program modules or other data. Sex, removable and non-removable media.
  • Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridge, magnetic tape, magnetic disk storage or other magnetic storage A storage device, or any other medium that can be used to store desired information and that can be accessed by a computer.
  • communication media typically includes computer readable instructions, data structures, program modules, or other data in a modulated data signal, such as a carrier wave or other transport mechanism, and can include any information delivery media. .
  • the method and device for transmitting system information provided by the foregoing embodiment, after determining the system information sent by the cell, effectively solves the problem by encapsulating and transmitting various necessary system information and the discovery reference signal DRS in a common subframe.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. Instructions to achieve their corresponding functions. This application is not limited to any specific combination of hardware and software.
  • the technical solution provided by the embodiment of the present invention effectively solves the problem of sending opportunity information, overhead, and delay of system information in various scenarios by encapsulating and transmitting various necessary system information and the discovery reference signal DRS in a common subframe. problem.

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Abstract

本文公开了一种系统信息的发送方法和装置。所述系统信息的发送方法包括:确定由小区发送的系统信息;在公共子帧上发送所述确定出的系统信息;其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。

Description

一种系统信息的发送方法和装置 技术领域
本文涉及但不限于无线通信技术领域,尤其涉及的是一种系统信息的发送方法和装置。
背景技术
LTE-U(Long Term Evolution–Unlicensed,LTE使用非授权载波)是指在非授权的载波中部署LTE(Long Term Evolution,长期演进),用来满足无线通信系统日益增长的容量需求和提高非授权频谱的使用效率,是LTE以及未来无线通信可能的一个重要演进方向。在设计LTE-U时,需要考虑如何与WiFi、雷达等异系统以及LTE-U同系统之间公平友好的竞争非授权载波来进行数据传输,同时需要尽可能的不影响和保留LTE技术特性。根据3GPP标准会议的表述,Rel-13/14版本中的LTE-U系统也可称为LAA(LTE Licensed Assisted Access to unlicensed spectrum,LTE授权载波辅助接入)系统。另外还有一种非授权载波设备可以自行与UE进行数据交互,不需要授权载波辅助接入,一般称作Standalone设备。
3GPP LTE Rel-13/14版本中的非授权载波采用CA(Carrier aggregation,载波聚合)的方式(包括后续可能的DC(Dual connectivity,双链接)方式),通过授权载波辅助接入到非授权载波,且在非授权载波小区上不发送PBCH(Physical Broadcast Channel,物理广播信道)。PBCH通常用于承载一些重要的系统信息,如下行带宽信息、PHICH(Physical Hybrid-ARQ Indicator Channel,物理混合自动重传请求指示信道)配置信息、以及SFN(System Frame Number,系统帧号)信息(在系统信息块中占用8bit,另外2bit通过盲检得到)。
上述非授权载波小区的这些系统信息对UE(User Equipment,用户设备)来说是必要的,但是,如何发送这些系统信息给UE是一个需要解决的问题。
发明概述
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本文提供一种系统信息的发送方法和装置,能够解决系统信息的发送机会问题。
本发明实施例提供了一种系统信息的发送方法,该方法包括:
确定由小区发送的系统信息;
在公共子帧上发送所述确定出的系统信息;
其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。
可选地,所述在公共子帧上发送所述确定出的系统信息,包括:
按照配置在公共子帧上发送所述确定出的系统信息;
其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置。
可选地,所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
可选地,所述系统信息和DRS的发送配置包括:
不同系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
不同系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
可选地,所述系统信息和DRS的发送配置包括:
系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持 续时间;或者
系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
可选地,第一信息与第二信息之间独立配置参数时,第一信息的配置参数与第二信息的配置参数之间存在约束关系;
在所述配置参数为周期时,第一信息的周期与第二信息的周期之间存在倍数关系;
其中,第一信息和第二信息分别是不同的系统信息,或者,第一信息是系统信息,第二信息是DRS。
可选地,所述公共子帧包括以下任意一种:
a)DRS子帧;
b)DRS子帧和DRS子帧的相邻子帧;
c)发现参考信号测量定时配置DMTC子帧;
d)新定义的子帧。
可选地,所述确定出的由小区发送的系统信息包括以下信息的至少一种:
a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
b)系统信息块SIB中的部分或全部信息;
c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
可选地,所述小区为非授权载波小区。
可选地,所述非授权载波小区包括:载波聚合CA场景的辅小区Scell,或者双链接DC场景的主辅小区PSCell或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
可选地,所述在公共子帧上发送所述确定出的系统信息,包括:
在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
可选地,发送所述确定出的系统信息的空闲子帧为公共子帧内的第n个空闲子帧;n为预设值。
可选地,所述在公共子帧上发送所述确定出的系统信息,包括:
在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
可选地,所述系统信息的图样配置包括以下方式的至少一种:
a)频域上占用系统带宽的中间72个子载波;
b)时域上占用发送子帧的第二个时隙的前四个符号;
c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM符号,或在时域上占用DRS子帧上的非DRS符号;
d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,且在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
可选地,所述系统信息的图样配置包括以下方式的至少一种:
a)在频域上重复发送所述系统信息;
b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
可选地,所述在公共子帧上发送所述确定出的系统信息,包括:
采用以下方式中的至少一种产生系统信息的扰码序列:
a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
b)与时隙号绑定生成系统信息的扰码序列;
c)与子帧号绑定生成系统信息的扰码序列;
d)与符号序号绑定生成系统信息的扰码序列。
可选地,所述方法还包括:
将以下信息中的至少一种通过无线资源控制RRC信令或下行控制信息DCI通知给用户终端:
公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
本发明还提供了一种系统信息的发送装置,包括:
设置模块,设置为确定由小区发送的系统信息;
发送模块,设置为在公共子帧上发送所述确定出的系统信息;
其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。
可选地,发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
按照配置在公共子帧上发送所述确定出的系统信息;
其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置。
可选地,所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
可选地,所述系统信息和DRS的发送配置包括:
不同系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
不同系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息之间独立配置以下至少一种参数:周期、偏移、 持续时间、子帧位置。
可选地,所述系统信息和DRS的发送配置包括:
系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
可选地,第一信息与第二信息之间独立配置参数时,第一信息的配置参数与第二信息的配置参数之间存在约束关系;
在所述配置参数为周期时,第一信息的周期与第二信息的周期之间存在倍数关系;
其中,第一信息和第二信息分别是不同的系统信息,或者,第一信息是系统信息,第二信息是DRS。
可选地,所述公共子帧包括以下任意一种:
a)DRS子帧;
b)DRS子帧和DRS子帧的相邻子帧;
c)发现参考信号测量定时配置DMTC子帧;
d)新定义的子帧。
可选地,所述确定出的由小区发送的系统信息包括以下信息的至少一种:
a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
b)系统信息块SIB中的部分或全部信息;
c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
可选地,所述小区为非授权载波小区。
可选地,所述非授权载波小区包括:载波聚合CA场景的辅小区Scell,或者双链接DC场景的主辅小区PSCell或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
可选地,发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
可选地,发送所述确定出的系统信息的空闲子帧为公共子帧内的第n个空闲子帧;n为预设值。
可选地,发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
可选地,所述系统信息的图样配置包括以下方式的至少一种:
a)频域上占用系统带宽的中间72个子载波;
b)时域上占用发送子帧的第二个时隙的前四个符号;
c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM符号,或在时域上占用DRS子帧上的非DRS符号;
d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,且在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
可选地,所述系统信息的图样配置包括以下方式的至少一种:
a)在频域上重复发送所述系统信息;
b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
可选地,发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
采用以下方式中的至少一种产生系统信息的扰码序列:
a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
b)与时隙号绑定生成系统信息的扰码序列;
c)与子帧号绑定生成系统信息的扰码序列;
d)与符号序号绑定生成系统信息的扰码序列。
可选地,所述装置还包括:
通知模块,设置为将以下信息中的至少一种通过无线资源控制RRC信令或下行控制信息DCI通知给用户终端:
公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
本发明实施例还提供一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令被处理器执行时实现上述方法。
与相关技术相比,本发明实施例提供的一种系统信息的发送方法和装置,通过将各种必要的系统信息与发现参考信号DRS在公共子帧上封装发送从而有效地解决了各种场景下系统信息的发送机会问题、开销问题、时延问题。
在阅读并理解了附图和详细描述后,可以明白其他方面。
附图概述
图1为本发明实施例的一种系统信息的发送方法流程图。
图2为本发明实施例的一种系统信息的发送装置示意图。
详述
下文中将结合附图对本发明的实施例进行详细说明。需要说明的是,在 不冲突的情况下,本申请中的实施例及实施例中的特征可以相互任意组合。
如图1所示,本发明实施例提供了一种系统信息的发送方法,该方法包括:
S110,确定由小区发送的系统信息;
S120,在公共子帧上发送所述确定出的系统信息;
其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;
其中,所述公共子帧包括一个或多个子帧;
下文如果未特别强调DRS(Discovery Reference Signal,发现参考信号)为扩展后的DRS,则DRS一般指扩展前的DRS,即为不包含系统信息的DRS。尤其是指3GPP Rel-12/Rel-13 36.211协议中定义的discovery signal。扩展后的DRS可以由所述系统信息和扩展前的DRS组成。
所述由小区发送的系统信息可以包括:MIB(Master Information Block,主信息块)或物理广播信道PBCH中的部分或全部信息,和/或系统信息块SIB(System Information Block)中的部分或全部信息,和/或其他的一些系统信息;
其中,MIB或PBCH中的部分或全部信息,比如,下行带宽、物理混合自动重传请求指示信道PHICH配置信息和系统帧号SFN信息。
系统信息块SIB中的部分或全部信息,比如,SIB1、和/或SIB2、和/或SIB3~SIB13中的部分或全部信息。具体的SIB中的部分或全部系统信息如TDD模式上下行子帧配置、特殊子帧配置、随机接入参数、SIB调度信息等。
其他的一些系统信息,比如,子帧号、和/或运营商ID、和/或子帧/帧结构信息、和/或占用时长或占用符号数等。
其中,所述在公共子帧上发送所述确定出的系统信息,包括:
按照配置在公共子帧上发送所述确定出的系统信息;
其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和 DRS的发送配置、系统信息的图样配置。
其中,所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
其中,系统信息可以作为DRS的组成成分或与DRS伴随发送;
当系统信息不是DRS的组成成分时,所述系统信息可以在DRS子帧、或者DRS的子帧和DRS子帧的相邻子帧、或者发现参考信号测量定时配置DMTC子帧发送。
不同需求对不同的系统信息、DRS的发送要求是不一样的,例如:对MIB中下行带宽/物理混合自动重传请求指示信道PHICH配置/SFN信息的发送频率要求、对SIB1中TDD模式上下行子帧配置信息的发送频率要求、对同步和RRM(Radio Resource Management,无线资源管理)测量需求依赖的DRS信号的发送频率要求,这几个发送频率要求对应的需求是不一样的。因此,小区发送不同的系统信息、发送DRS的配置信息(包括以下至少之一:周期、持续时间、偏移)可以针对不同的需求进行调整。
因此,系统信息中的不同信息的发送可以独立配置、或组合配置、或混合配置;和/或,系统信息中的信息与DRS的发送可以独立配置,组合配置、或混合配置。
其中,对于独立配置,包括以下至少一种情形:
a)不同的系统信息之间独立配置参数;
b)系统信息与DRS之间独立配置参数;
其中,所述独立配置的参数包括以下参数中的至少一种:周期、偏移、持续时间、子帧/符号位置;
对于独立配置,不同的系统信息配置参数之间可以存在约束关系,系统信息配置参数与DRS配置参数之间也可以存在约束关系。在所述配置参数为周期时,所述关系限定可以是倍数关系。例如:DRS周期是系统信息周期的倍数;或者,系统信息周期是DRS周期的倍数;或者,系统信息1的周期是系统信息2的周期的倍数。在所述配置参数为子帧位置时,例如:系统信息1位于发送DRS的子帧;或者,DRS位于发送系统信息1的子帧; 或者,系统信息1位于发送系统信息2的子帧。
其中,对于组合配置,包括以下至少一种情形:
a)不同的系统信息之间组合配置参数;
b)系统信息与DRS之间组合配置参数;
其中,组合配置的参数包括以下参数中的至少一种:周期、偏移、持续时间;
对于组合配置,统一配置可以是配置成相同的参数。公共子帧的周期可以配置为40ms、80ms、160ms;持续时间可配置为1个子帧到5个子帧;而在每个周期的每个持续时间duration内,不同系统信息和DRS可以有不同的配置或子帧信息,例如:在一个周期内DRS发送一次或多次,或系统信息1可以发送一次或多次。
其中,对于混合配置,包括以下至少一种情形:
a)不同的系统信息之间混合配置参数,包括:一部分系统信息之间独立配置参数,一部分系统信息之间统一配置参数;
b)系统信息与DRS之间混合配置参数,包括:一部分系统信息与DRS之间独立配置参数,一部分系统信息与DRS之间统一配置参数;
上述子帧/符号位置是指在公共子帧上发送所述系统信息的子帧的位置或符号的位置。
一种方法是系统信息在公共子帧上的每个子帧上都可以发送,或者系统信息在公共子帧上的子帧位置是可配置的。另一种方法是限定系统信息的子帧位置或在公共子帧上的子帧位置,系统信息只能在这些特殊位置的子帧上发送。例如,可以限定系统信息1在公共子帧上的第1个或第n个子帧发送。或者,限定系统信息1在公共子帧上的子帧0、5、4、9、1或6上发送。这里的子帧序号是按照一个无线帧内的子帧进行编号,但是这些子帧需要位于公共子帧上。对于符号位置,可以限定系统信息1在子帧上的第n个或哪些符号上发送。
例如,3GPP Rel-12/13版本中DMTC的周期为40/80/160ms,持续时间 duration为6ms,偏移为0~(周期-1)ms。
公共子帧可以等同于DMTC子帧、或者是对上述参数(周期、偏移、和/或持续时间)修改后的DMTC子帧、或者是全新定义的子帧(具有周期、偏移、和/或持续时间等配置参数)。公共子帧为全新定义的子帧,尤其是指公共子帧有一套独立的上述配置参数。
可选的,公共子帧的发送配置参数和/或相应的测量配置参数可以由基站通知给UE。测量配置参数可以与发送配置参数相同,也可以是发送配置参数的子集。测量配置参数包括测量周期、测量偏移、和/或测量的持续时间。基站可以通过高层信令(如RRC)或者通过物理层信道或信令DCI(Downlink Control Information,下行控制信息)来通知。
首先,公共子帧的周期、偏移、和/或持续时间可以等于DMTC的周期、偏移、和/或持续时间。也即公共子帧即为DMTC子帧。将DMTC子帧设置为发送所述系统信息和DRS的公共子帧。UE假设会在公共子帧(DMTC子帧)上接收到所述系统信息和/或DRS。
或者,对现有DMTC子帧的配置进行增强,增强后的DMTC子帧即为公共子帧。具体包括:
为适应比上述周期更长或更短周期的不同系统信息传输要求,公共子帧(DMTC子帧)需要支持更多的周期配置,例如公共子帧(DMTC子帧)的周期为10/20/40/80/160/320/640ms。
为与现有系统信息发送方法兼容、UE接收更简单可行,对DMTC子帧的配置进行限制,具体包括:
例如对DMTC子帧的周期、偏移或持续时间进行限制。例如限制偏移为0、5、1、6、4、和/或9,保证系统信息1可以在无线帧的子帧0、子帧5、子帧1、子帧6、子帧4、和/或子帧9上发送。
如果公共子帧为通过一套独立的配置参数来全新定义的子帧,那么为与现有系统信息发送方法兼容、UE接收更简单可行,对公共子帧的周期、偏移和/或持续时间取值进行限制。例如限制偏移为0、5、1、6、4、和/或9,保证系统信息可以在无线帧的子帧0、子帧5、子帧1、子帧6、子帧4、和 /或子帧9上发送。
在非授权载波场景中,上述系统信息和DRS的发送还受到信道是否空闲、以及信道状况的限制。
对于独立配置,假设偏移为0。系统信息1的周期可以设置为20ms,系统信息2的周期可以为320ms,DRS的周期可以设置为40ms。
对于组合配置,所有系统信息和DRS可以设置一个统一的周期,如40ms。
对于混合配置,系统信息1的周期可以设置为20ms,其他所有系统信息和DRS的周期都设置为40ms。
其中,所述公共子帧包括以下任意一种:
a)DRS子帧;
b)DRS子帧和DRS子帧的相邻子帧;
c)发现参考信号测量定时配置DMTC子帧;
d)新定义的子帧。
其中,所述确定出的由小区发送的系统信息包括以下信息的至少一种:
a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
b)系统信息块SIB中的部分或全部信息;
c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
其中,所述小区为非授权载波小区。
其中,所述非授权载波小区包括:载波聚合CA场景的辅小区Scell(Secondary Cell,辅小区),或者双链接DC场景的主辅小区PSCell(Primary SCell,主辅小区)或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
其中,所述在公共子帧上发送所述确定出的系统信息,包括:
在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
比如,在公共子帧内的预设空闲子帧上发送所述确定出的系统信息;
其中,所述在公共子帧上发送所述确定出的系统信息,包括:
在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
其中,所述系统信息的图样配置包括以下方式的至少一种:
a)频域上占用系统带宽的中间72个子载波;
b)时域上占用发送子帧的第二个时隙的前四个符号;
c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM符号,或在时域上占用DRS子帧上的非DRS符号;
d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,但在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
其中,为增强边缘UE或信道环境较差UE接收所述系统信息的性能,所述在公共子帧上发送所述确定出的系统信息,包括采用以下方式中的至少一种方式进行发送:
a)在频域上重复发送所述系统信息;优选的,按照72个子载波或6个RB(Resource Block,资源块)在频域上重复。
b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
其中,所述在公共子帧上发送所述确定出的系统信息,包括:
采用以下方式中的至少一种产生系统信息的扰码序列:
a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
b)与时隙号绑定生成系统信息的扰码序列;
c)与子帧号绑定生成系统信息的扰码序列;
d)与符号序号绑定生成系统信息的扰码序列。
其中,将以下信息中的至少一种通知给用户终端:
公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
可选地,所述方法还包括:
将非授权载波小区的部分系统信息确定为由授权载波小区进行发送,或者由其他非授权载波小区进行发送;
例如,下行带宽和/或PHICH配置信息可以由授权载波小区发送,SFN由非授权载波小区发送。
例如,SeNB或SCG中的非授权载波小区SCell的系统信息可以由其他非授权载波小区(比如,PSCell)进行发送;
其中,所述授权载波小区可以是CA场景中的授权载波小区PCell(Primary Cell,主小区),或者是MeNB(Master eNodeB,主基站)或MCG(Master cell group,主小区组)中的授权载波小区;
可选地,所述由非授权载波小区发送所述确定出的系统信息,包括:
在发现参考信号测量定时配置DMTC内的任意一个空闲子帧发送所述确定出的系统信息。也即,不限于在每个无线帧的第一个子帧发送所述确定出的系统信息。对于UE来说,UE会假设在DMTC内的任意一个空闲子帧都可能接收到所述确定出的系统信息。也即,不限于在每个无线帧的第一个子帧接收所述确定出的系统信息。
所述空闲子帧是指基站或UE通过提前对非授权载波信道感知或能量检测,发现所述非授权载波没有被其他设备占用的子帧。但是空闲子帧不排除本小区同时发送DRS、或PDSCH等信号或信道。或者说,空闲子帧为基站或UE通过对非授权载波提前信道感知或能量检测,判断本小区在该子帧上可以使用所述非授权载波。
为了便于描述,本发明实施例以LAA(LTE授权载波辅助接入)系统作为非授权载波系统的一个典型应用进行描述。
在非授权载波、微小区(small cell)打开/关闭、极简载波(lean carrier)等多种无线通信场景中(这些场景的共同特征之一是小区参考信号(CRS,Cell Reference Signal)不总是发送,进一步的,主同步信号/辅同步信号(PSS/SSS,Primary Synchronization Signal/Secondary Synchronization Signal)也可以不总是按半帧发送),UE需要接收发现参考信号(DRS,Discovery Reference Signal or discovery signal,参考3GPP Rel-13TS36.211)和/或其他参考信号,进行小区搜索、同步和/或无线资源管理(RRM,Radio Resource Management)测量等功能。为了实现UE的这种信号接收和测量行为,基站需要为UE配置信号测量定时配置,如发现参考信号测量定时配置(DMTC,DRS measurement timing configuration)。基站根据信号测量定时配置,发送相应信号。另外一种方法是,基站先确定信号的发送图样,再根据发送图样确定UE侧的信号测量定时配置。在Rel-12/13中,DMTC的周期为40/80/160ms,持续时间(duration)为6ms。
在Rel-13LAA中,DRS具有较高的先听后说(LBT,Listen Before Talk)优先级,只需要侦听一个不小于X us(如25us)的时间间隔,基站即可发送DRS。DRS包括CRS、PSS/SSS、以及可配置的CSI-RS(信道状态信息参考符号),共占用12个OFDM(Orthogonal Frequency Division Multiplexing,正交频分复用技术)符号(包括其中一些未定义的空白符号,可用来发送未定义信号)。
现有承载MIB系统信息的PBCH周期为40ms,且在40ms内的每个无线帧的第一个子帧都会发送。由于PBCH在40ms里的4次发送携带相同的信息bit,每一次都可以独自解码。因此,在信道质量较好的情况下,UE可能只需要接收这40ms内的其中一个,就能够成功解码出PBCH的内容,如果不成功,就与在下一个10ms接收的PBCH的内容进行软合并后再进行解码,直到成功解码出PBCH。
非授权载波小区的部分或全部系统信息可以作为DRS的组成成分发 送,和/或,非授权载波小区的部分或全部系统信息可以和DRS伴随发送;
为了使PBCH和DRS发送相适应,且考虑到LBT(先听后说)特性,因此,所述系统信息可以在公共子帧内的任意一个空闲子帧发送。也即,不限于在每个无线帧的第一个子帧发送。
可选地,在无线帧上的哪个子帧发送还可取决于公共子帧配置、LBT结果和/或系统信息发送策略。
其中,系统信息尤其是指主信息块MIB中的部分或全部信息(下行带宽、和/或PHICH配置、和/或SFN)。
可选地,系统信息的发送与DRS中的其他信息的发送是相互独立的;或者,系统信息的发送与DRS中的其他信息的发送是绑定在一起的;
例如,系统信息作为DRS的组成成分发送时,有两种方式:第一种,每次发送DRS,不一定都发送所述系统信息,系统信息的发送是可配置的。第二种,只要发送DRS,就会发送所述系统信息。
同样,系统信息伴随DRS发送时,也有两种方式:第一种:每次发送DRS,不一定都伴随发送所述系统信息,系统信息的发送是可配置的。第二种,只要发送DRS,就会伴随发送所述系统信息。
可选地,发送系统信息时,频域上占用系统带宽的中间72个子载波,时域上占用发送子帧的第二个时隙的前四个符号;或者,频域上占用系统带宽的中间72个子载波,时域上不限制是否占用发送子帧的第二个时隙的前四个符号;或者,频域上不限制是否占用系统带宽的中间72个子载波,时域上占用发送子帧的第二个时隙的前四个符号;或者,对频域和时域均不做上述限制。
也即,系统信息可以在公共子帧内的任意一个空闲子帧发送,频域上占用系统带宽的中间72个子载波,时域上占用发送子帧的第二个时隙的前四个符号;或者
系统信息可以在公共子帧内的任意一个空闲子帧发送,频域上占用系统带宽的中间72个子载波,时域上不限制占用发送子帧的第二个时隙的前四个符号。比如,时域上可以占用发送子帧的其他位置的四个、一个或多个(除 四个以外的其他个数)OFDM符号。占用4个符号是根据传统的MIB信息bit进行编码调制和映射的。这里的系统信息可以仅包括MIB信息的部分或全部,所以可映射到一个或多个OFDM符号上。例如,DRS目前占用发送子帧的符号0/4/5/6/7/11,还有可配置的符号9/10用于发送CSI-RS,因此,所述系统信息可以占用DRS子帧上DRS中的的2个、或4个未定义符号(如符号1、2、3、8)、和/或DRS子帧上的非DRS符号(如符号12、符号13)、和/或DRS子帧的相邻子帧上的OFDM符号上发送;
所述系统信息不包括下行带宽信息,仅包括PHICH配置、和/或SFN。此时,系统信息伴随DRS发送、或作为DRS的组成成分发送时,可以不限于映射到系统带宽的中间72个子载波。进一步的,可以映射到系统带宽的更多频域资源上,甚至映射到全带宽。这样做一方面发送限制小,同时有更多的RE(Resource Element,资源元素)可以携带系统信息,也即可以发送更多bit系统信息,同时也可以解决系统带宽占用的规则要求。可选的,时域上可以按照传统方式,在发送子帧的第二个时隙的前四个符号上发送,或者,可以在发送子帧的其他位置的四个、一个或多个(除四个以外的其他个数)OFDM符号上发送;
系统信息可以在公共子帧内的任意一个空闲子帧发送。不受限于每个无线帧的第一个子帧。进一步的,可以限定在公共子帧或DMTC内第n(n为预设值)个空闲子帧发送系统信息,其中n可以等于1。
方法一:修改公共子帧或DMTC的最小周期,适应系统信息的发送方式。
例如修改公共子帧或DMTC周期为10ms。传统的BCH(Broadcast Channel,广播信道)或MIB信息的编码、速率匹配、加扰、调制等过程可以不做改变,仍然映射到40ms内的四个无线帧上。在每个无线帧上的哪个子帧发送取决于公共子帧配置、LBT结果或发送策略。
例如,可以限定在公共子帧或DMTC内第一个可用或空闲子帧发送系统信息。每个无线帧上各个子帧上的扰码是相同的,和传统的每个无线帧扰码相同。因此,UE仍然通过盲检40ms定时来获得SFN的最后两位bit。如 果在无线帧上没有侦听到信道空闲,则在该无线帧上不发送PBCH。
例如,假设公共子帧即为DMTC子帧,DMTC周期为10ms,偏移为2ms,那么DMTC区间为2-7ms、12-17ms、22-27ms、32-37ms、…、等等。如果上述DMTC区间的第一个空闲子帧为子帧2、子帧13、子帧22、子帧34,则系统信息可以在上述子帧发送。这几个子帧携带的系统信息是相同的。即40ms内的信息可以是相同的,40ms间的SFN是不同的。如果DMTC内无空闲子帧,则系统信息在该周期内不发送。
或者,SFN的最后两位bit不需要通过UE盲检40ms定时得到,而显式的编码在系统信息里面,也即SFN包含10bit(现有MIB中的SFN仅有8bit,最低2bit通过UE盲检40ms定时得到),这10bit全部参与系统信息的编码调制和映射。此时,系统信息的扰码序列初始化(或称为伪随机序列的初始化)cinit(参考3GPP协议36.211 6.6.1节)不再按照40ms生成一次。进一步的,cinit可以与时隙号或子帧号绑定。例如采用如下方式:
子帧0-4发送的系统信息的伪随机序列或扰码序列与子帧0相同;子帧5-9发送的系统信息的伪随机序列或扰码序列与子帧5相同;
或者,子帧0-9发送的系统信息的伪随机序列或扰码序列与子帧0相同;或者,子帧0-9发送的系统信息的伪随机序列或扰码序列与子帧5相同;
方法二:DMTC周期不变,仍为40/80/160ms。在一个周期内,只存在一个DMTC occasion(6ms)。所以传统的BCH或MIB信息在40ms内的四个无线帧上发送则不可行。因此需要修改上述编码映射方式。有2个如下选择:
选择一是:BCH或MIB信息的编码调制等过程可以不做改变,仍然映射到40ms内的四个无线帧上,但根据DMTC配置,这四个无线帧不大可能都成功发送。因此,在这四个无线帧上可以发送一次、或两次。可以发送两次的原因是DMTC可以跨两个无线帧。落在DMTC之外的无线帧或子帧上的系统信息可以不发送,或者通过常规的LBT(区别于DRS的快速LBT方式)在侦听到信道空闲后再发送。
例如,MIB信息如SFN通过DRS或DMTC发送,周期为80ms,由于要求LBT,不要求在无线帧的第一个子帧发送,例如在帧15的第三个子帧发送,SFN=15,其中,15-mod(15,4)=12,12由SFN信息的前8bit来表示,mod(15,4)=3由UE盲检来确定。DRS或DRS中的MIB信息(下行带宽、和/或PHICH配置、和/或SFN)可以在DMTC里多次发送。如果发送DRS或DRS中的MIB信息的子帧隶属于同一个无线帧,则SFN相同。如果发送DRS或DRS中的MIB信息的子帧不隶属于同一个无线帧,则SFN不同。
选择二是:系统信息可以在DMTC内的多个子帧上发送或重复发送,来保证系统信息发送的鲁棒性。但在同一个无线帧上多个子帧发送需使用相同的扰码、或使用不与无线帧号捆绑的扰码
例如,DMTC周期为10ms,偏移为2ms,那么DMTC区间为2-7ms、12-17ms、22-27ms、32-37ms、…、等等。假设信道在2-7ms内都空闲可用,那么系统信息可以映射到该区间的4个或多个子帧上重复发送,但不能使用现有扰码,否则UE就会认为该4个子帧隶属于四个不同的无线帧,引发混乱。为了UE能够盲检出SFN的最低2bit,40ms内的4个无线帧应该使用不同的扰码。
方法三:SFN的最后两位bit使用PBCH的空闲bit、或者SFN的所有bit(包括MIB中的8bit和隐式传输的2bit)都编码映射在系统信息或DRS中,此时UE不需要根据扰码来确定最后2bit。
此时,系统信息的扰码序列初始化(或称为伪随机序列的初始化)cinit(参考3GPP协议36.211 6.6.1节)不再按照40ms生成一次。进一步的,cinit可以与时隙号或子帧号绑定。例如采用如下方式:
子帧0-4发送的系统信息的伪随机序列或扰码序列与子帧0相同;子帧5-9发送的系统信息的伪随机序列或扰码序列与子帧5相同;
或者,子帧0-9发送的系统信息的伪随机序列或扰码序列与子帧0相同;或者,子帧0-9发送的系统信息的伪随机序列或扰码序列与子帧5相同;
如图2所示,本发明实施例提供了一种系统信息的发送装置,包括:
设置模块201,设置为确定由小区发送的系统信息;
发送模块202,设置为在公共子帧上发送所述确定出的系统信息;
其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。
其中,发送模块202,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
按照配置在公共子帧上发送所述确定出的系统信息;
其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置。
其中,所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
其中,所述系统信息和DRS的发送配置包括:
不同系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
不同系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
其中,所述系统信息和DRS的发送配置包括:
系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
一部分系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
其中,第一信息与第二信息之间独立配置参数时,第一信息的配置参数与第二信息的配置参数之间存在约束关系;
在所述配置参数为周期时,第一信息的周期与第二信息的周期之间存在倍数关系;
其中,第一信息和第二信息分别是不同的系统信息,或者,第一信息是系统信息,第二信息是DRS。
其中,所述公共子帧包括以下任意一种:
a)DRS子帧;
b)DRS子帧和DRS子帧的相邻子帧;
c)发现参考信号测量定时配置DMTC子帧;
d)新定义的子帧。
其中,所述确定出的由小区发送的系统信息包括以下信息的至少一种:
a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
b)系统信息块SIB中的部分或全部信息;
c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
其中,所述小区为非授权载波小区。
其中,所述非授权载波小区包括:载波聚合CA场景的辅小区Scell,或者双链接DC场景的主辅小区PSCell或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
其中,发送模块202,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
其中,发送所述确定出的系统信息的空闲子帧为公共子帧内的第n个空闲子帧;n为预设值。
其中,发送模块202,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
其中,所述系统信息的图样配置包括以下方式的至少一种:
a)频域上占用系统带宽的中间72个子载波;
b)时域上占用发送子帧的第二个时隙的前四个符号;
c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM符号,或在时域上占用DRS子帧上的非DRS符号;
d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,且在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
其中,所述系统信息的图样配置包括以下方式的至少一种:
a)在频域上重复发送所述系统信息;
b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
其中,发送模块202,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
采用以下方式中的至少一种产生系统信息的扰码序列:
a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
b)与时隙号绑定生成系统信息的扰码序列;
c)与子帧号绑定生成系统信息的扰码序列;
d)与符号序号绑定生成系统信息的扰码序列。
其中,所述装置还包括:
通知模块203,设置为将以下信息中的至少一种通过无线资源控制RRC信令或下行控制信息DCI通知给用户终端:
公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
此外,本发明实施例还提供一种计算机可读存储介质,存储有计算机可执行指令,所述计算机可执行指令被处理器执行时实现上述方法。
本领域普通技术人员可以理解,上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中,在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分;例如,一个物理组件可以具有多个功能,或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器,如数字信号处理器或微处理器执行的软件,或者被实施为硬件,或者被实施为集成电路,如专用集成电路。这样的软件可以分布在计算机可读介质上,计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。
如本领域普通技术人员公知的,术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于RAM、ROM、EEPROM、闪存或其他存储器技术、CD-ROM、数字多功能盘(DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存 储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外,本领域普通技术人员公知的是,通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据,并且可包括任何信息递送介质。
上述实施例提供的一种系统信息的发送方法和装置,确定由小区发送的系统信息后,通过将各种必要的系统信息与发现参考信号DRS在公共子帧上封装发送从而有效地解决了各种场景下系统信息的发送机会问题、开销问题、时延问题。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成,所述程序可以存储于计算机可读存储介质中,如只读存储器、磁盘或光盘等。可选地,上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地,上述实施例中的各模块/单元可以采用硬件的形式实现,例如通过集成电路来实现其相应功能,也可以采用软件功能模块的形式实现,例如通过处理器执行存储于存储器中的程序指令来实现其相应功能。本申请不限制于任何特定形式的硬件和软件的结合。
需要说明的是,本申请还可有其他多种实施例,在不背离本申请精神及其实质的情况下,熟悉本领域的技术人员可根据本申请作出各种相应的改变和变形,但这些相应的改变和变形都应属于本申请所附的权利要求的保护范围。
工业实用性
本发明实施例提供的技术方案,通过将各种必要的系统信息与发现参考信号DRS在公共子帧上封装发送从而有效地解决了各种场景下系统信息的发送机会问题、开销问题、时延问题。

Claims (34)

  1. 一种系统信息的发送方法,该方法包括:
    确定由小区发送的系统信息;
    在公共子帧上发送所述确定出的系统信息;
    其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。
  2. 如权利要求1所述的方法,其中:
    所述在公共子帧上发送所述确定出的系统信息,包括:
    按照配置在公共子帧上发送所述确定出的系统信息;
    其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置。
  3. 如权利要求2所述的方法,其中:
    所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
  4. 如权利要求2所述的方法,其中:
    所述系统信息和DRS的发送配置包括:
    不同系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
    不同系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
    一部分系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
  5. 如权利要求2所述的方法,其中:
    所述系统信息和DRS的发送配置包括:
    系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
    系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
    一部分系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
  6. 如权利要求4或5所述的方法,其中:
    第一信息与第二信息之间独立配置参数时,第一信息的配置参数与第二信息的配置参数之间存在约束关系;
    在所述配置参数为周期时,第一信息的周期与第二信息的周期之间存在倍数关系;
    其中,第一信息和第二信息分别是不同的系统信息,或者,第一信息是系统信息,第二信息是DRS。
  7. 如权利要求1-5中任一项所述的方法,其中:
    所述公共子帧包括以下任意一种:
    a)DRS子帧;
    b)DRS子帧和DRS子帧的相邻子帧;
    c)发现参考信号测量定时配置DMTC子帧;
    d)新定义的子帧。
  8. 如权利要求1-5中任一项所述的方法,其中:
    所述确定出的由小区发送的系统信息包括以下信息的至少一种:
    a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
    b)系统信息块SIB中的部分或全部信息;
    c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
  9. 如权利要求1所述的方法,其中:
    所述小区为非授权载波小区。
  10. 如权利要求9所述的方法,其中:
    所述非授权载波小区包括:载波聚合CA场景的辅小区Scell,或者双链接DC场景的主辅小区PSCell或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
  11. 如权利要求9或10所述的方法,其中:
    所述在公共子帧上发送所述确定出的系统信息,包括:
    在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
  12. 如权利要求11所述的方法,其中:
    发送所述确定出的系统信息的空闲子帧为公共子帧内的第n个空闲子帧;n为预设值。
  13. 如权利要求11所述的方法,其中:
    所述在公共子帧上发送所述确定出的系统信息,包括:
    在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
    根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
  14. 如权利要求2所述的方法,其中:
    所述系统信息的图样配置包括以下方式的至少一种:
    a)频域上占用系统带宽的中间72个子载波;
    b)时域上占用发送子帧的第二个时隙的前四个符号;
    c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM 符号,或在时域上占用DRS子帧上的非DRS符号;
    d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,且在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
  15. 如权利要求2所述的方法,其中:
    所述系统信息的图样配置包括以下方式的至少一种:
    a)在频域上重复发送所述系统信息;
    b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
    c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
  16. 如权利要求1所述的方法,其中:
    所述在公共子帧上发送所述确定出的系统信息,包括:
    采用以下方式中的至少一种产生系统信息的扰码序列:
    a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
    b)与时隙号绑定生成系统信息的扰码序列;
    c)与子帧号绑定生成系统信息的扰码序列;
    d)与符号序号绑定生成系统信息的扰码序列。
  17. 如权利要求2所述的方法,其中:
    所述方法还包括:
    将以下信息中的至少一种通过无线资源控制RRC信令或下行控制信息DCI通知给用户终端:
    公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
  18. 一种系统信息的发送装置,包括:
    设置模块,设置为确定由小区发送的系统信息;
    发送模块,设置为在公共子帧上发送所述确定出的系统信息;
    其中,所述公共子帧用于发送所述确定出的系统信息和发现参考信号DRS,或者发送包含所述确定出的系统信息的扩展后的DRS;所述公共子帧包括一个或多个子帧。
  19. 如权利要求18所述的装置,其中:
    发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
    按照配置在公共子帧上发送所述确定出的系统信息;
    其中,所述配置包括以下至少一种:公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置。
  20. 如权利要求19所述的装置,其中:
    所述公共子帧的发送配置包括以下参数中的至少一种:周期、偏移、持续时间。
  21. 如权利要求19所述的装置,其中:
    所述系统信息和DRS的发送配置包括:
    不同系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
    不同系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
    一部分系统信息之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
  22. 如权利要求19所述的装置,其中:
    所述系统信息和DRS的发送配置包括:
    系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间;或者
    系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置;或者
    一部分系统信息与DRS之间配置相同的以下至少一种参数:周期、偏移、持续时间,且另一部分系统信息与DRS之间独立配置以下至少一种参数:周期、偏移、持续时间、子帧位置。
  23. 如权利要求21或22所述的装置,其中:
    第一信息与第二信息之间独立配置参数时,第一信息的配置参数与第二信息的配置参数之间存在约束关系;
    在所述配置参数为周期时,第一信息的周期与第二信息的周期之间存在倍数关系;
    其中,第一信息和第二信息分别是不同的系统信息,或者,第一信息是系统信息,第二信息是DRS。
  24. 如权利要求18-22中任一项所述的装置,其中:
    所述公共子帧包括以下任意一种:
    a)DRS子帧;
    b)DRS子帧和DRS子帧的相邻子帧;
    c)发现参考信号测量定时配置DMTC子帧;
    d)新定义的子帧。
  25. 如权利要求18-22中任一项所述的装置,其中:
    所述确定出的由小区发送的系统信息包括以下信息的至少一种:
    a)主信息块MIB或物理广播信道PBCH中的部分或全部信息;
    b)系统信息块SIB中的部分或全部信息;
    c)以下信息中的至少一种:子帧号、运营商ID、子帧结构信息、帧结构信息、占用时长、占用符号数。
  26. 如权利要求18所述的装置,其中:
    所述小区为非授权载波小区。
  27. 如权利要求26所述的装置,其中:
    所述非授权载波小区包括:载波聚合CA场景的辅小区Scell,或者双链接DC场景的主辅小区PSCell或辅小区Scell,或者独立通信Standalone场景的非授权载波小区。
  28. 如权利要求26或27所述的装置,其中:
    发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
    在公共子帧内的任意一个空闲子帧发送所述确定出的系统信息。
  29. 如权利要求28所述的装置,其中:
    发送所述确定出的系统信息的空闲子帧为公共子帧内的第n个空闲子帧;n为预设值。
  30. 如权利要求28所述的装置,其中:
    发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
    在公共子帧内确定用于发送所述系统信息的空闲子帧,包括:
    根据公共子帧配置、先听后说LBT结果和系统信息发送策略中的至少一种确定出用于发送所述系统信息的空闲子帧。
  31. 如权利要求19所述的装置,其中:
    所述系统信息的图样配置包括以下方式的至少一种:
    a)频域上占用系统带宽的中间72个子载波;
    b)时域上占用发送子帧的第二个时隙的前四个符号;
    c)在时域上占用DRS子帧上DRS内未定义的正交频分复用技术OFDM符号,或在时域上占用DRS子帧上的非DRS符号;
    d)在时域上与DRS子帧上DRS组成信号占用相同的OFDM符号,且 在频域上占用DRS子帧上DRS组成信号未占用的频域资源。
  32. 如权利要求19所述的装置,其中:
    所述系统信息的图样配置包括以下方式的至少一种:
    a)在频域上重复发送所述系统信息;
    b)在公共子帧内的一个或多个正交频分复用技术OFDM符号上重复发送所述系统信息;
    c)在公共子帧内的一个或多个子帧上重复发送所述系统信息。
  33. 如权利要求18所述的装置,其中:
    发送模块,设置为采用以下方式在公共子帧上发送所述确定出的系统信息:
    采用以下方式中的至少一种产生系统信息的扰码序列:
    a)采用40ms的倍数作为周期生成系统信息的扰码序列,或在40ms内多次生成系统信息的扰码序列;
    b)与时隙号绑定生成系统信息的扰码序列;
    c)与子帧号绑定生成系统信息的扰码序列;
    d)与符号序号绑定生成系统信息的扰码序列。
  34. 如权利要求19所述的装置,其中:
    所述装置还包括:
    通知模块,设置为将以下信息中的至少一种通过无线资源控制RRC信令或下行控制信息DCI通知给用户终端:
    公共子帧的发送配置、系统信息和DRS的发送配置、系统信息的图样配置、系统信息和DRS的测量配置。
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