WO2018028689A1 - 一种系统信息发送方法及装置 - Google Patents

一种系统信息发送方法及装置 Download PDF

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Publication number
WO2018028689A1
WO2018028689A1 PCT/CN2017/097171 CN2017097171W WO2018028689A1 WO 2018028689 A1 WO2018028689 A1 WO 2018028689A1 CN 2017097171 W CN2017097171 W CN 2017097171W WO 2018028689 A1 WO2018028689 A1 WO 2018028689A1
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WIPO (PCT)
Prior art keywords
time
trigger signal
system information
frequency resource
information
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PCT/CN2017/097171
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English (en)
French (fr)
Inventor
张旭
薛丽霞
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华为技术有限公司
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Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019507244A priority Critical patent/JP6801087B2/ja
Priority to BR112019002243A priority patent/BR112019002243A2/pt
Priority to EP21193916.0A priority patent/EP3993541A1/en
Priority to EP17838819.5A priority patent/EP3484223B1/en
Priority to KR1020197006729A priority patent/KR102257017B1/ko
Publication of WO2018028689A1 publication Critical patent/WO2018028689A1/zh
Priority to US16/272,141 priority patent/US11330541B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0473—Wireless resource allocation based on the type of the allocated resource the resource being transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a system information sending method and apparatus.
  • LTE Long Term Evolution
  • UE User Equipment
  • the base station in the process of downlink transmission, the base station needs to simultaneously send a synchronization signal and a broadcast signal to a time-frequency resource predefined by the user equipment, where the broadcast signal carries system information, and the time-frequency resources occupied by the system information are compared. Large, synchronous signals occupy less time-frequency resources. Since the base station periodically transmits the synchronization signal and the broadcast signal to the user equipment according to the preset frequency, the time-frequency resources of the entire subframe of the transmission channel are occupied, so that on these predefined time-frequency resources, It is not flexible enough to turn it into an available resource for uplink transmission, which limits the flexibility of LTE system resource configuration.
  • the time division duplex (English: Time Division Duplexing, abbreviation: TDD) system includes 9 subframes numbered 0-9, and each subframe corresponds to one time-frequency resource for uplink or downlink transmission.
  • TDD Time Division Duplexing
  • the subframes No. 0 and No. 5 are predefined as subframes for downlink transmission, and the two sub-frames are specified.
  • the time-frequency resource of the frame is a time-frequency resource carrying the downlink transmission.
  • the 0th and Subframe No. 5 is only used for downlink transmission and cannot be used for uplink data transmission, which in turn affects resource allocation for subframes 0 and 5.
  • the present application provides a method and a device for transmitting system information, so as to solve the problem that the time-frequency resources cannot be flexibly configured due to the use of the predefined sub-frames for the downlink bearer.
  • the present application discloses the following technical solutions:
  • an embodiment of the present application provides a system information sending method, where the method includes: Receiving, by the first time-frequency resource group in a radio frame, at least one first uplink trigger signal, and determining, according to the time-frequency resource of the at least one first uplink trigger signal, a time-frequency resource for transmitting the first system information, where The first time offset of the time-frequency resource of the first system information in the time domain is relative to the frame header position of the radio frame where the first system information is located; the time-frequency resource in the first system information Sending the first system information.
  • the base station after receiving the uplink trigger signal sent by the terminal device, the base station sends the first system information to the terminal device according to the determined time-frequency resource, and the time-frequency resource of the first system information is compared with There is a time offset in the frame header position of the radio frame, so that the synchronization signal sent by the base station and the broadcast channel carrying the first system information are not simultaneously transmitted, so that the base station does not send the first system information when the uplink trigger signal is not detected.
  • the time-frequency resource used for receiving the downlink bearer receives only the periodically transmitted synchronization signal, and the synchronization signal occupies less resources, so that most of the remaining time-frequency resources can be dynamically configured, for example, It is used for data transmission on the line, etc., thereby avoiding the occupation of time-frequency resources of the entire subframe, thereby improving the flexibility of resource allocation of the LTE system.
  • the method further includes: the base station receiving, by the second time-frequency resource group in the second radio frame, at least one second uplink trigger signal;
  • the time-frequency resource of the at least one second uplink trigger signal determines a time-frequency resource for transmitting the second system information, where the start position of the time-frequency resource of the second system information in the time domain is relative to the second system information a second time offset exists in a frame header position of the radio frame, where the first time offset is different from the second time offset; and the first time is sent on the time-frequency resource of the second system information Second system information.
  • the base station when the base station receives two or more uplink trigger signals in the time-frequency resource group of the radio frame, the base station transmits the system on different system information time-frequency resources by determining different time offsets.
  • the information avoids occupying fixed time-frequency resources and enhances the flexibility of configuring time-frequency resources on the base station side, so that the base station can flexibly schedule data services.
  • the receiving, by the base station, before receiving the at least one uplink triggering signal in the first time-frequency resource group the method further includes: sending, by the base station, a first indication for receiving an uplink trigger signal
  • the first indication information is located in the first time-frequency resource group of the radio frame, so that the uplink trigger signal sent by the terminal device can be received, and then the system information is generated and sent to the terminal device.
  • the first transmission is determined according to the time-frequency resource of the at least one first uplink trigger signal
  • the time-frequency resource of the system information includes: determining a candidate time-frequency resource group for transmitting the first system information according to the time-frequency resource of the at least one first uplink trigger signal; determining the candidate time-frequency resource group according to the first system information Transmitting a time-frequency resource of the first system information.
  • the embodiment of the present application provides a system information receiving method, where the method includes: a user equipment receives a synchronization signal or a second indication information of a serving cell, where the second indication information is used to indicate trigger signal sequence information;
  • the trigger signal resource of the serving cell is determined by the synchronization signal or the second indication information, where the trigger signal resource of the serving cell includes: a time-frequency resource of at least one uplink trigger signal, and/or at least one
  • the uplink trigger signal sequence information is generated according to the trigger signal resource of the serving cell, and the uplink trigger signal is sent on the uplink trigger signal time-frequency resource; according to the time-frequency resource of the uplink trigger signal, And determining a second time-frequency resource group for transmitting system information; and receiving system information in the second time-frequency resource group of the system information.
  • the user equipment before receiving the system information sent by the base station, the user equipment generates an uplink trigger signal according to the trigger signal resource of the serving cell, and sends the uplink trigger signal to the base station to prevent the user equipment from transmitting the trigger signal after receiving the system information, thereby causing the base station to Simultaneously transmitting the synchronization signal and the broadcast signal carrying the system information, thereby occupying the entire subframe time-frequency resource and affecting the flexible configuration of the time-frequency resource.
  • the determining, by the synchronization signal, the trigger signal resource of the serving cell includes: determining, according to the synchronization signal, identification information of a serving cell, or Identification information corresponding to the cell, where the identification information corresponding to the serving cell refers to the same function as the identification information of the serving cell, and can identify the identification information of the serving cell; according to the serving cell The identification information, or the identification information corresponding to the serving cell, determines a trigger signal resource of the serving cell.
  • the generating an uplink trigger signal according to the trigger signal resource of the serving cell includes: determining sequence information of the trigger signal according to the trigger signal resource of the serving cell; The signal sequence information generates the uplink trigger signal.
  • generating an uplink trigger signal according to the trigger signal resource of the serving cell includes: the user equipment according to the second indication Information acquiring trigger signal sequence information; generating the uplink trigger signal according to the trigger signal sequence information.
  • the sending the uplink trigger signal on the uplink trigger signal time-frequency resource includes: Detecting whether the first indication information is received before sending the uplink trigger signal; if the first indication information is received, determining, according to the first indication information, a time-frequency resource for sending the uplink trigger signal, and The uplink trigger signal is sent on the time-frequency resource of the uplink trigger signal, so that the base station can receive the sent uplink trigger signal.
  • receiving the system information in the second time-frequency resource group includes: determining Whether the system information is received in the second time-frequency resource group; if the user equipment does not receive the system information in the second time-frequency resource group, changing the format of the uplink trigger signal, and/or improving the transmission
  • the uplink trigger signal is sent again according to the changed format and/or the increased transmit power to ensure that the base station can receive the uplink trigger signal sent by the user equipment.
  • the second time-frequency resource group includes system information of at least one of the serving cells Resources, among them,
  • the system information resources include time domain resources, frequency domain resources, and codeword resources.
  • the frequency domain resource of the system information and the uplink trigger signal occupy the same frequency domain subcarrier;
  • the time domain resource of the system information is The user equipment specifies a time domain resource within a time interval after transmitting the trigger signal;
  • the codeword resource of the system information includes the system information scrambling code.
  • the embodiment of the present application further provides a base station, including a transceiver unit and a processing unit, where the transceiver unit is configured to receive at least one first uplink trigger in a first time-frequency resource group in a first radio frame.
  • the processing unit is configured to determine, according to the time-frequency resource of the at least one first uplink trigger signal, a time-frequency resource that sends the first system information, where the time-frequency resource of the first system information is in a time domain.
  • a starting time position is a first time offset relative to a frame header position of the radio frame in which the first system information is located; the transceiver unit is further configured to send the First system information.
  • the transceiver unit is further configured to receive, by using the second time-frequency resource group in the second radio frame, at least one second uplink trigger signal; Determining, according to the time-frequency resource of the at least one second uplink trigger signal, a time-frequency resource for transmitting the second system information, where a start position of the time-frequency resource of the second system information in the time domain is relative to the a second time offset exists in a frame header position of the radio frame where the second system information is located, the first time offset is different from the second time offset; the transceiver unit is further configured to be in the second The second system information is sent on a time-frequency resource of the system information.
  • the transceiver unit is further configured to send first indication information for receiving an uplink trigger signal, where the first indication information is located at a first part of the radio frame. Within the time-frequency resource group.
  • the processing unit is further configured to determine, according to the time-frequency resource of the at least one first uplink trigger signal The subcarriers in the same frequency domain are occupied, and the time-frequency resources of the first system information are determined according to the subcarriers in the same frequency domain.
  • the embodiment of the present application further provides a user equipment, including a transceiver unit and a processing unit.
  • the transceiver unit is configured to receive a synchronization signal or second indication information of the serving cell, where the second indication information is used to indicate trigger signal sequence information; the processing unit is configured to use, according to the synchronization signal, and/or the second The indication information is used to determine a trigger signal resource of the serving cell, where the trigger signal resource of the serving cell includes: a time-frequency resource of at least one uplink trigger signal, and/or at least one uplink trigger signal sequence information, and according to the The trigger signal resource of the serving cell generates an uplink trigger signal, and the transceiver unit is further configured to send the uplink trigger signal on the uplink trigger signal time-frequency resource; the processing unit is further configured to use, according to the uplink trigger signal
  • the time-frequency resource determines a second time-frequency resource group in the radio frame; the transceiver unit is further configured to receive system information in the second time-frequency resource group.
  • the user equipment comprises means for implementing all or part of the method steps of the first to seventh aspects of the second aspect described above.
  • an embodiment of the present application further provides an information sending system, where the system includes a base station and at least one user equipment, where the base station includes a transceiver and a processor, where the user equipment includes a transceiver and a processor, where ,
  • the user equipment receives the synchronization signal or the second indication information of the serving cell, where the second indication information is used to indicate the trigger signal sequence information, and the trigger signal resource of the serving cell is determined according to the synchronization signal or the second indication information, where
  • the trigger signal resource of the serving cell includes: a set of uplink trigger signal time-frequency resources and/or a set of uplink trigger signal code words;
  • the user equipment further generates an uplink trigger signal according to the trigger signal resource of the serving cell, and sends the uplink trigger signal on the uplink trigger signal time-frequency resource;
  • the base station receives at least one first uplink trigger signal in the first time-frequency resource group in the first radio frame, and determines a time-frequency resource that sends the first system information according to the time-frequency resource of the at least one first uplink trigger signal.
  • the user equipment determines, according to the time-frequency resource of the uplink trigger signal, a second time-frequency resource group that transmits system information, and receives the first system information in a second time-frequency resource group of the system information.
  • the base station is further configured to implement the implementation manner of any one of the foregoing first aspect to the third aspect, wherein the user equipment is further configured to implement the foregoing second aspect to the second aspect Any of the technical solutions implemented.
  • the base station only periodically transmits the synchronization signal in the idle state, and does not send the system information when the base station does not detect the uplink trigger signal.
  • the adaptation resource occupied by the synchronization signal It is small, so all the remaining subframe time-frequency resources can be dynamically configured to flexibly match the uplink and downlink services of the serving cell, and prevent the base station from simultaneously transmitting the synchronization signal and the broadcast signal carrying the system information, resulting in occupying the entire time-frequency resource. , which in turn affects the flexibility of resource allocation of the LTE system.
  • the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include a part of each implementation manner of the method and apparatus for transmitting system information. Or all steps.
  • FIG. 1 is a schematic diagram of a radio frame in a TDD system
  • FIG. 2 is a schematic flowchart of a system information sending method according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of user equipment trigger system information provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a system information receiving method according to an embodiment of the present application.
  • FIG. 5 is a flowchart of sending system information by a user equipment and a base station according to an embodiment of the present application
  • FIG. 6 is a structural block diagram of a base station according to an embodiment of the present application.
  • FIG. 7 is a structural block diagram of a user equipment according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another user equipment according to an embodiment of the present application.
  • the method and device for transmitting system information are mainly applied to a 5G communication system, an LTE system or an LTE evolution system, and can also be applied to single carrier and multiple carriers.
  • the method is used for a base station (abbreviation: eNB).
  • eNB base station
  • the system information is sent to the user equipment (abbreviation: UE), and the system information includes: system bandwidth information, a system frame number, and system information related to user equipment access.
  • the user equipment in this application may also be a terminal device, a user terminal, a client, and the like.
  • the terminal device further includes: a mobile phone, a tablet computer, a palmtop computer, or a mobile internet device.
  • the serving cell in the embodiment of the present application may be a serving cell configured by the network device to the user equipment, and may also be a serving cell serving the user equipment, or a serving cell accessed by the user equipment.
  • the serving cell (English: serving cell) in the embodiment of the present invention may also be referred to as a carrier (English: component carrier).
  • the serving cell in the embodiment of the present invention may be a primary serving cell of a user equipment (English: primary serving cell) or a secondary serving cell (English: secondary serving cell).
  • the base station and the user equipment perform uplink or downlink data transmission through a radio frame, where the radio frame is a time unit in the LTE system, and the LTE system specifies that each radio frame includes 10 subframes, and the time length is 10 ms. .
  • the radio frame structure is determined by a combination of different types of subframes.
  • Each sub-frame has a length of 1 ms and includes multiple types.
  • the sub-frames in the TDD mode include a downlink sub-frame, an uplink sub-frame, and a special sub-frame.
  • FDD Frequency Division Duplexing
  • the following includes a downlink subframe and an uplink subframe.
  • An embodiment of the present application provides a system information sending method, as shown in FIG. 2, the method includes:
  • Step 201 The base station receives at least one first uplink trigger in the first time-frequency resource group in the first radio frame. signal.
  • the form of the trigger signal is similar to the form of the PRACH signal in LTE.
  • the time-frequency resource refers to a resource used for transmitting a physical channel and a physical signal in a time domain and a frequency domain in an LTE system.
  • the minimum time unit for transmitting a physical signal or a physical signal in a time domain is specified in a specific LTE system.
  • An OFDM symbol, the smallest unit in the frequency domain is one subcarrier, and the resource including the minimum resource unit of the one time domain and the frequency domain is called a resource element (English: resource element, abbreviation: RE);
  • the time-frequency resource includes a set of REs in the frequency domain and the time domain, for example, one subframe is included in the time domain, each subframe includes 14 OFDM symbols, and 72 subcarriers are included in the frequency domain.
  • the first time-frequency resource includes at least one subframe, for example, one radio frame in FIG. 1 includes a total of 10 subframes from 0th to 9th, wherein the predefined DL0 and DL5 are sub-carriers for carrying downlink transmission.
  • the first time-frequency resource group in step 201 is a time-frequency resource group composed of the first to fourth subframes, and/or a time-frequency resource group composed of the sixth to ninth subframes, where
  • the uplink trigger signal may be received on a time-frequency resource of each of the two time-frequency resource groups. At least one uplink trigger signal may be received in the first time-frequency resource group, and each of the first time-frequency resource groups may receive at least one uplink trigger signal.
  • the base station before receiving the uplink trigger signal, the base station periodically sends a synchronization signal according to the preset frequency, and the synchronization signal carries the ID information or the identification information of the serving cell through the synchronization signal sequence.
  • Step 202 The base station determines, according to the time-frequency resource of the at least one first uplink trigger signal, a time-frequency resource that sends the first system information, where the start time position of the time-frequency resource of the first system information is relative to the time domain. There is a first time offset in the frame header position of the radio frame in which the first system information is located.
  • Determining, according to the time-frequency resource of the first uplink trigger signal, the time-frequency resource for transmitting the first system information specifically: determining, according to the time-frequency resource of the at least one first uplink trigger signal, a candidate time-frequency resource group that sends the first system information; Determining a time-frequency resource of the first system information from a candidate time-frequency resource group of the first system information.
  • the base station receives the uplink trigger signal sent by the user equipment on the time-frequency resource of the second subframe, and determines the composition of the fourth to eighth subframes according to the time-frequency resource of the user equipment side trigger signal.
  • the frequency resource group that is, the candidate time-frequency group of the first system information, transmits system information.
  • the radio frame on the base station side is composed of a total of 10 subframes from 0th to 9th. Determining, by the base station, sending in the time-frequency resource group according to the number of resource locations that receive the trigger signal in the first time-frequency resource group, and/or the subframe type in the time-frequency resource group of the sending trigger signal Time-frequency resources of system information.
  • the process of determining, by the base station, the time-frequency resource group for transmitting system information according to the trigger signal received in the first time-frequency resource group is as follows: as shown in FIG. 3, the first time-frequency resource group includes subframes 0-3; The base station receives at least one uplink trigger signal in the first time-frequency resource group. If the time-frequency resource corresponding to the at least one uplink trigger signal is in the time domain and the start position is located in the subframe 2, the base station determines the sending system.
  • the time-frequency resource group of the information is a time-frequency resource group composed of subframes 4-8; that is, the start position subframe is determined by the base station to determine the time offset of the last subframe in the time-frequency resource group in which the system information is transmitted is a fixed time. Offset, the time interval in this embodiment is 6 sub-intervals frame.
  • the resources of the system information described in the present application include: time, frequency, codeword resources, and the like.
  • the codeword resource includes a system information scrambling code determined according to a time-frequency resource of the uplink trigger signal.
  • the relationship between the time-frequency resource of the uplink trigger signal and the time-frequency resource of the system information is: the frequency domain resource of the system information and the uplink trigger signal occupy the same frequency domain subcarrier, and the system information
  • the time domain resource has a time offset relative to the time domain resource of the uplink trigger signal sent by the user equipment, where the time offset is at least one subframe and/or one OFDM (English: Orthogonal Frequency Division Multiplexing, Chinese: Orthogonal Frequency Division Multiplexing) symbols.
  • the base station may also indicate that the user equipment sends the time-frequency resource of the trigger signal.
  • the base station sends the downlink common control instruction information or the downlink control indication information for the specific user equipment, and is used to indicate the time-frequency resource for sending the trigger signal resource information.
  • Step 203 The base station sends the first system information on a time-frequency resource of the first system information. Further, it can be sent by sending a broadcast channel carrying the first system information.
  • the base station sends system information on at least two time-frequency resource locations, and the at least two time-frequency resources are respectively located in at least two different radio frames, determining that the time-frequency resource for transmitting each system information is relative to There is a different time offset for the start position of the frame header of the radio frame in which the time-frequency resource is located. That is, the time-frequency resource for transmitting the first system information has a first time offset relative to the frame header position of the first radio frame, and the time-frequency resource for transmitting the second system information has a second frame position for the second radio frame.
  • the time offset, and so on ensures that the time-frequency resource of each transmitted system information is different from the frame start position of the radio frame in which it is located, and the downlink preset fixed time-frequency resource is prevented from being occupied.
  • the base station does not need to occupy a fixed time-frequency resource to transmit system information, so that the subframe in which the system information is originally transmitted may also change the subframe type, for example, changing to an uplink transmission subframe, thereby improving system resource flexibility.
  • Sex the subframe in which the system information is originally transmitted may also change the subframe type, for example, changing to an uplink transmission subframe, thereby improving system resource flexibility.
  • the receiving, by the base station, the at least one uplink trigger signal in the foregoing step 201 includes: the base station receiving two or more uplink trigger signals at different time-frequency resource positions in the time-frequency resource group in the same radio frame, or The base station receives two or more uplink trigger signals on different radio frames, including different time-frequency resources in consecutive or discontinuous radio frames.
  • the step of determining to transmit the time-frequency resource of the second system information comprises: according to the at least one second uplink trigger signal
  • the time-frequency resource determines a time-frequency resource for transmitting the second system information, wherein the start position of the time-frequency resource of the second system information in the time domain is relative to the frame header position of the wireless frame where the second system information is located There is a second time offset, the first time offset being different from the second time offset; the time offset being at least one subframe and/or one OFDM symbol.
  • the second system information is sent on the time-frequency resource of the second system information.
  • the system information is sent to avoid occupying fixed time-frequency resources, and the flexibility of configuring time-frequency resources on the base station side is enhanced, so that the base station can flexibly schedule uplink or downlink data services.
  • the first indication information is used to indicate whether the current subframe can receive the uplink trigger signal.
  • the indication information further includes performing a unified indication on the entire radio frame to notify the user equipment whether the uplink trigger signal can be sent.
  • the uplink trigger signal is received at at least one time-frequency resource location in the first time-frequency resource group of the radio frame. If the two or more uplink trigger signals are received, the base station sends the system message to the received uplink trigger signal according to a predefined time length and each of the uplink trigger signals. User equipment. Alternatively, the time-frequency resource of the system information is determined by the time-frequency resource location of the received multiple sets of trigger signals. For example, the uplink trigger signal received in the subframe n is less than the same frequency of the subframe n+k. The domain location sends system information.
  • the base station further includes the user equipment generating and transmitting an uplink trigger signal before receiving the uplink trigger signal, as shown in FIG. 4, and the specific process is as follows:
  • Step 401 The user equipment receives a synchronization signal or second indication information of the serving cell, where the second indication information is used to indicate trigger signal sequence information.
  • Step 402 The user equipment determines, according to the synchronization signal or the second indication information, a trigger signal resource of the serving cell, where the trigger signal resource of the serving cell includes: a time-frequency resource of at least one uplink trigger signal, and/or At least one uplink trigger signal sequence information;
  • step 402 if the indication information received by the user equipment is the synchronization signal of the serving cell, the user equipment determines the trigger signal resource of the serving cell according to the synchronization signal. Specifically, first, the user equipment determines ID information of the serving cell or ID information corresponding to the serving cell according to the synchronization signal; secondly, the user equipment further uses the ID information of the serving cell, or The ID information corresponding to the serving cell determines a trigger signal resource of the serving cell.
  • the ID information of the serving cell may be a Cell-ID or other identification information, and the Cell-ID is a unique identifier of the serving cell in the network; and the ID information corresponding to the serving cell refers to having The Cell-ID has the same function and can identify the ID information of the serving cell, for example, a Hyper-cell ID, which can uniquely identify a group of serving cells.
  • the uplink trigger signal resource includes: a codeword information group for generating a trigger signal, time-frequency resource information for transmitting a trigger signal, initial format information of the trigger signal, initial power information of the trigger signal, and the like.
  • the time domain resource of the trigger signal is all subframes or partial subframes in a radio frame, and the frequency domain resource is the same as or different from the frequency domain resource of the received synchronization signal;
  • the initial format information of the trigger signal includes, The number of consecutively occupied OFDM symbols, or the number of repeated transmissions, the length of time during which the trigger signal is sent, and the number of repetitions of the trigger signal;
  • the initial power information of the signal transmission includes the power level of the initial transmission trigger signal and the power increment amount at the time of retransmission.
  • the trigger signal format information includes a length of time for trigger signal transmission and a repetition number of the trigger signal.
  • the indication information received by the user equipment may be the indication information sent by the base station, or the trigger sequence information, where the trigger sequence information includes a codeword information or a codeword information group that generates a trigger signal, and sends a trigger signal.
  • the trigger sequence information includes a codeword information or a codeword information group that generates a trigger signal, and sends a trigger signal. The location of the time-frequency resource, the initial format information of the trigger signal, and the initial power information of the trigger signal.
  • Step 403 The user equipment generates an uplink trigger signal according to the trigger signal resource of the serving cell, and sends the uplink trigger signal on the uplink trigger signal time-frequency resource.
  • the generating, by the user equipment, the trigger signal according to the trigger signal resource includes: if the user equipment receives the synchronization signal of the serving cell, determining a sequence information group of the trigger signal according to the trigger signal resource, and A sequence is randomly selected from the sequence information group to generate the trigger signal as a trigger signal sequence.
  • the trigger signal sequence information includes a sequence of generating a trigger signal, and further includes generating information such as a basic parameter or an instruction of the trigger signal sequence.
  • the user equipment sends the generated trigger signal to the base station in step 403, it is also required to determine whether to send an uplink trigger signal.
  • the specific process is as follows:
  • the user equipment detects whether there is the first indication information at a start position of the subframe in which the determined uplink trigger signal time-frequency resource is located, and if the sending instruction of the sending trigger signal is detected, the user equipment is in the determined trigger signal.
  • the time-frequency resource location sends an uplink trigger signal; if the first indication information of the sending trigger signal is not detected, the user equipment does not send the trigger signal; the first indication information may include: the downlink control indication information is used to indicate the current subframe type. Instructions.
  • the user equipment determines whether the base station can receive the uplink trigger signal and sends the system information before transmitting the uplink trigger signal, so as to prevent the user equipment from sending an invalid uplink trigger signal, thereby improving the security and accuracy of the system information transmission and transmission.
  • the base station After the user equipment sends the generated uplink trigger signal to the base station, the base station performs the foregoing steps 201 to 203 according to the uplink trigger signal, and sends the system information to the user equipment through the broadcast channel.
  • the method further includes:
  • Step 404 The user equipment determines the second time-frequency resource group in the radio frame according to the time-frequency resource of the uplink trigger signal. That is, the user equipment determines one or a group of the serving cell system information resources according to the sent uplink trigger signal.
  • the user equipment determines, according to the subframe position where the time-frequency resource of the uplink trigger signal is located, the time-frequency resource location for detecting the system information of the serving cell, that is, the second time-frequency resource Source location. For example, as shown in FIG. 3, the user equipment determines the time-frequency resource location for detecting the system information of the serving cell according to the subframe position where the time-frequency resource of the uplink trigger signal is sent; for example, after the user equipment sends the trigger signal in subframe n, It is detected whether a system message from the base station is received within a time interval from the start of the subframe n+1 to the k subframes at which the n+k subframe ends.
  • the time-frequency resource location of the system information transmission is determined by the time-frequency resource location of the synchronization signal received by the user equipment; for example, the predetermined frequency domain of the m-th OFDM symbol of the user equipment in subframe n Detecting a synchronization signal of the serving cell, the user equipment detects system information of the serving cell in an m+v OFDM symbol of a subframe n+1; the system information may occupy one or more OFDM symbols As described above, the user equipment may receive system information starting from the m+vth OFDM symbol.
  • step 403 If the user equipment does not detect the system message in the time-frequency resource, the user equipment repeatedly performs step 403 above, and continues to send an uplink trigger signal on the subsequent trigger signal time-frequency resource; or the user equipment is turned on.
  • the timer repeats step 403 after the timer duration is over.
  • Step 405 The user equipment receives system information in the second time-frequency resource group.
  • the process of resending the trigger signal by the user equipment further includes: changing, by the user equipment, an initial format and/or a transmit power of the trigger signal, and using the updated trigger signal format and/or transmit power when transmitting the trigger signal for the next time, specifically, More repetitions are used and/or larger transmission power is used; if the number of repetitions of the trigger signal and the transmission power reach a predefined maximum value, the format and transmission power of the trigger signal are no longer changed.
  • the initial format is changed, or the transmission power is increased, so that the sent uplink trigger signal can reach the base station, so that the base station can receive the uplink trigger signal and send the system information.
  • the base station after receiving the trigger signal sent by the user equipment, the base station sends the system information to the user equipment according to the determined time-frequency resource, and the time-frequency resource of the information system has a time offset. Therefore, the synchronization signal sent by the base station and the broadcast signal carrying the system information are not simultaneously transmitted, that is, the system information is not sent when the base station does not detect the uplink trigger signal.
  • the time-frequency resource for receiving the downlink bearer is used. Since only the synchronization signal is received, the occupied resources are small, and most of the remaining time-frequency resources can be dynamically configured, for example, uplink data transmission, thereby avoiding occupation of time-frequency resources of the entire subframe, thereby improving flexibility of resource configuration of the LTE system. Sex.
  • an information sending system in another embodiment, includes a base station and at least one user equipment. As shown in FIG. 5, the base station sends a signaling diagram of system information to the user equipment, specifically, The process of generating and transmitting system information in the system is as follows:
  • the base station sends a synchronization signal or a second indication signal of the serving cell to the user equipment.
  • the user equipment receives a synchronization signal or a second indication signal of the serving cell.
  • the user equipment determines, according to the received synchronization signal or the second indication signal, a trigger signal of the serving cell.
  • the source device in particular, the user equipment determines the ID_I information or the identification information according to the set of synchronization signals of the serving cell, and determines the trigger signal resource of the serving cell according to the ID_I information or the identification information; wherein the trigger signal resource of the serving cell includes: Group uplink trigger signal time-frequency resources and/or a set of uplink trigger signal code words;
  • S504 The user equipment generates an uplink trigger signal according to the trigger signal resource of the serving cell, and determines whether the uplink trigger signal can be sent.
  • step S505 If the user equipment detects or receives the first indication information from the base station, the first indication information is used to indicate that the user equipment sends a trigger signal; then step S6 is performed;
  • S506 The user equipment sends the generated uplink trigger signal to the base station.
  • the base station receives at least one uplink trigger signal on at least one time-frequency resource location in the first time-frequency resource group of the radio frame.
  • the base station determines, according to the time-frequency resource location of the at least one uplink trigger signal, a frequency resource location that sends the first system information, where the first time-frequency resource location is in a time domain relative to the first system. There is a first time offset in the frame header position of the radio frame where the information is located;
  • the base station sends the first system information on the time-frequency resource location of the first system information.
  • S510 The user equipment determines a second time-frequency resource group according to the time-frequency resource of the uplink trigger signal.
  • S511 The user equipment receives the first system information in the second time-frequency resource group.
  • S512 The user equipment detects whether the first system information sent by the user equipment is received.
  • S513 If the user equipment does not detect or receive the first system information, change the initial format of the uplink trigger signal, or increase the transmit power.
  • S514 The user equipment sends the uplink trigger signal again according to the changed initial format or the increased transmit power to ensure that the base station can receive the uplink trigger signal and send the system information.
  • the base station is further configured to receive a second uplink trigger signal on the radio frame, and send a second time-frequency resource location of the broadcast signal according to the determining of the second uplink trigger signal, And transmitting, at the second time-frequency resource location, the system information, wherein the second time-frequency resource location has a second time offset relative to a frame header position of the radio frame during the specified time interval And the second time offset is not equal to the first time offset.
  • the base station only periodically sends the synchronization signal in the idle state, and does not send the system information when the base station does not detect the uplink trigger signal. In this case, the adaptation of the synchronization signal is occupied.
  • the resources are small, so all the remaining subframe time-frequency resources can be dynamically configured to flexibly match the uplink and downlink services of the cell, and prevent the base station from simultaneously transmitting the synchronization signal and the broadcast signal carrying the system information, resulting in occupying the entire time-frequency. Resources, which in turn affect the flexibility of LTE system resource allocation.
  • the present application further provides a base station 600, as shown in FIG.
  • the base station includes a transceiver unit 601 and a processing unit 602.
  • the transceiver unit 601 is configured to receive at least one first uplink trigger signal in the first time-frequency resource group in the first radio frame, and the processing unit 602 is configured to use the time-frequency according to the at least one first uplink trigger signal.
  • the resource determines a time-frequency resource for transmitting the first system information, where the start position of the time-frequency resource of the first system information in the time domain is first with respect to a frame header position of the radio frame where the first system information is located.
  • the time offset; the transceiver unit 601 is further configured to send the first system information on a time-frequency resource of the first system information.
  • the transceiver unit 601 is further configured to receive at least one second uplink trigger signal in the second time-frequency resource group in the second radio frame, and the processing unit 602 is configured to be configured according to the at least one second uplink trigger signal.
  • the time-frequency resource determines a time-frequency resource for transmitting the second system information, where the start position of the time-frequency resource of the second system information in the time domain is relative to the frame header position of the radio frame where the second system information is located. a second time offset, the first time offset is different from the second time offset; the transceiver unit 601 is further configured to send the second on the time-frequency resource of the second system information system message.
  • the transceiver unit 601 is further configured to send first indication information for receiving an uplink trigger signal, where the first indication information is located in a first time-frequency resource group of the radio frame.
  • the processing unit 602 is further configured to determine, according to the time-frequency resources of the at least one first uplink trigger signal, the subcarriers occupying the same frequency domain, and determine the time-frequency resources of the first system information according to the subcarriers in the same frequency domain. .
  • the embodiment further provides a user equipment 700, as shown in FIG. 7, including a transceiver unit 701 and a processing unit 702.
  • the transceiver unit 701 is configured to receive a synchronization signal or second indication information of the serving cell, where the second indication information is used to indicate trigger signal sequence information, and determine the serving cell according to the synchronization signal, and/or the second indication information.
  • a trigger signal resource where the trigger signal resource of the serving cell includes: a time-frequency resource of at least one uplink trigger signal, and/or at least one uplink trigger signal sequence information, and generating a trigger signal resource according to the serving cell
  • An uplink trigger signal; the uplink trigger signal is sent on the uplink trigger signal time-frequency resource; and the second time-frequency resource group is determined in the radio frame according to the time-frequency resource of the uplink trigger signal.
  • the transceiver unit 701 is further configured to receive system information in the second time-frequency resource group.
  • the processing unit 702 is further configured to determine, according to the synchronization signal, identification information of a serving cell, or identification information corresponding to the serving cell, where the identification information corresponding to the serving cell refers to The identification information of the serving cell has the same function, and can identify the identification information of the serving cell; determine the trigger signal of the serving cell according to the identification information of the serving cell or the identification information corresponding to the serving cell. Resources.
  • processing unit 702 is further configured to determine sequence information of the trigger signal according to the trigger signal resource of the serving cell, and generate the uplink trigger signal according to the trigger signal sequence information. And, if the second indication information is received, the processing unit 702 acquires trigger signal sequence information according to the second indication information, and generates the uplink trigger signal according to the trigger signal sequence information.
  • the processing unit 702 is further configured to: before detecting the uplink trigger signal, detecting whether the first indication information is received; if the first indication information is received, determining, according to the first indication information, that the uplink trigger signal is sent Time-frequency resources, and transmitting the uplink trigger signal on the uplink trigger signal time-frequency resource.
  • processing unit 702 is further configured to: if the system information is not received in the second time-frequency resource group, change a format of an uplink trigger signal, and/or increase a transmit power, and follow the changed format, and / or the increased transmit power transmits the uplink trigger signal again.
  • the second time-frequency resource group includes at least one system information resource of the serving cell, where the system information resource includes a time domain resource, a frequency domain resource, and a codeword resource.
  • the frequency domain resource of the system information and the uplink trigger signal occupy the same frequency domain subcarrier; and the time domain resource of the system information is within a specified time interval after the user equipment sends the trigger signal.
  • a domain resource; the codeword resource of the system information includes the system information scrambling code.
  • the base station after receiving the uplink trigger signal sent by the terminal device, the base station sends the first system information to the terminal device according to the determined time-frequency resource, and the time-frequency resource of the first system information is sent relative to the wireless device. There is a time offset in the frame header position of the frame, so that the synchronization signal sent by the base station and the broadcast channel carrying the first system information are not simultaneously transmitted, so that the base station does not send the first system information when the uplink trigger signal is not detected.
  • the time-frequency resource used for receiving the downlink bearer receives only the periodically transmitted synchronization signal, and the synchronization signal occupies less resources, so that most of the remaining time-frequency resources can be dynamically configured, for example, Data transmission on the line, etc., thereby avoiding the occupation of time-frequency resources of the entire subframe, thereby improving the flexibility of resource allocation of the LTE system.
  • the application further provides a base station and a user equipment in specific hardware.
  • the base station includes: a transceiver 801, and a processor. 802, a communication bus 803 and a storage 804, wherein at least one communication interface, and/or an IO interface is included in the transceiver 801.
  • the user equipment includes a transceiver 901, a processor 902, a communication bus 903 and a storage 904, and the transceiver 901 includes at least one communication interface and/or IO interface.
  • the transceiver 801 in the base station is a hardware device for implementing all the functions of the receiving unit 601 in the foregoing embodiment
  • the processor 802 is a hardware device that implements all the functions in the processing unit 602 in the foregoing embodiment
  • the transceiver 901 in the user equipment is a hardware device for implementing all the functions of the receiving unit 701 in the foregoing embodiment
  • the processor 902 is a hardware device that implements all the functions in the processing unit 702 in the foregoing embodiment.
  • a system for transmitting system information consisting of a base station and at least one user equipment is provided, and the base station and the user equipment are both applied to the hardware device or the device unit described in the foregoing embodiment, and the system is used to implement The base station sends the system information to the user equipment.
  • the specific delivery process includes:
  • the user equipment receives the synchronization signal or the second indication information of the serving cell, the second indication information is used to indicate the trigger signal sequence information, and the trigger signal of the serving cell is determined according to the synchronization signal or the second indication information.
  • the source resource, where the trigger signal resource of the serving cell includes: a set of uplink trigger signal time-frequency resources and/or a group of uplink trigger signal code words.
  • the user equipment further generates an uplink trigger signal according to the trigger signal resource of the serving cell, and sends the uplink trigger signal on the uplink trigger signal time-frequency resource.
  • the base station receives at least one first uplink trigger signal in a first time-frequency resource group in the first radio frame, and determines a time-frequency in which the first system information is sent according to the time-frequency resource of the at least one first uplink trigger signal.
  • a resource wherein a start time position of the time-frequency resource of the first system information in the time domain has a first time offset relative to a frame head position of the radio frame in which the first system information is located, and, in the The first system information is sent on a time-frequency resource of the first system information.
  • the user equipment determines, according to the time-frequency resource of the uplink trigger signal, a second time-frequency resource group that sends system information, and receives the first system information in a second time-frequency resource group of the system information. .
  • the processor may be a general-purpose central processing unit (CPU), a microprocessor, and an application-specific integrated circuit (ASIC). , or one or more integrated circuits for controlling the execution of the program of the present invention.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the communication bus can include a path for communicating information between the components or devices, i.e., communication between the user equipment and the base station.
  • the communication interface uses devices such as any transceiver for communicating with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Networks (WLAN), and the like.
  • RAN Radio Access Network
  • WLAN Wireless Local Area Networks
  • the memory can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type of information and instructions that can be stored.
  • the dynamic storage device may also be an Electrically Erasable Programmable Read-Only Memory (EEPROM), a Compact Disc Read-Only Memory (CD-ROM) or other optical disc storage, or a disc storage device ( Including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other media taken, but not limited to this.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • CD-ROM Compact Disc Read-Only Memory
  • disc storage device Including compressed optical discs, laser discs, optical discs, digital versatile discs, Blu-ray discs
  • the memory can exist independently and be connected to the processor via a bus.
  • the memory can also be integrated with the processor.
  • the memory is used to store application code for executing the solution of the present invention, and is controlled by a processor.
  • the processor is configured to execute application code stored in the memory.
  • the embodiment of the present application further provides a computer storage medium for storing a system information sending method provided by the foregoing embodiment, and a computer software instruction used by the system information receiving method, which is configured to execute the foregoing method embodiment. program of. By executing a stored program, system information can be transmitted and received.
  • embodiments of the present invention can be provided as a method, apparatus (device), or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • the computer program is stored/distributed in a suitable medium, provided with other hardware or as part of the hardware, or in other distributed forms, such as over the Internet or other wired or wireless telecommunication systems.

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Abstract

本发明公开一种系统信息发送方法及装置，方法包括：基站在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号，根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；在所述第一系统信息的时频资源上发送第一系统信息。本方法中基站在空闲状态下只周期性地发送同步信号，在基站未检测到上行触发信号之前不下发系统信息，由于同步信号占用的时频资源较小，因此剩余的全部子帧时频资源都可以进行动态的配置，灵活匹配小区的上行业务和下行业务，进而提高LTE系统资源配置的灵活性。

Description

一种系统信息发送方法及装置
本公开要求于2016年8月12日提交中国专利局、申请号为201610670094.2、发明名称为“一种系统信息发送方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域，尤其涉及一种系统信息发送方法及装置。
背景技术
随着长期演进(英文：Long Term Evolution，缩写：LTE)系统不断演进，面向未来下一代移动通信网络，需要更加灵活的网络接入技术。在LTE无线网络系统中，基站向用户设备(英文：User Equipment，缩写：UE)发送信息的传输定义为下行传输，对应地，用户设备向基站发送信息的传输为上行传输。
当前的LTE系统，基站在下行传输的过程中，需要向用户设备预定义的时频资源上同时发送同步信号和广播信号，其中，广播信号中携带系统信息，该系统信息占用的时频资源较大，同步信号占用的时频资源较小。由于基站按照预设频率周期性地将同步信号和广播信号同时发送给用户设备，会导致传输通道的整个子帧的时频资源都被占用，从而会使得在这些预定义的时频资源上，无法灵活将其变为上行传输的可用资源，进而限制了LTE系统资源配置的灵活性。
例如，如图1所示在时分双工(英文：Time Division Duplexing，缩写：TDD)系统中包括编号为0-9的9个子帧，每个子帧对应一个时频资源，用于上行或下行传输，在这0-9个子帧中由于需要固定的时频资源承载下行的同步信号和广播信号，所以预定义第0号和5号子帧为用于下行传输的子帧，并且规定这两个子帧的时频资源为承载下行传输的时频资源，所以当这两个时频资源承载基站发送的同步信号和广播信号时，由于整个时频资源都被系统信息占用，因此，第0号和5号子帧只用于下行传输不能用于上行数据的发送，进而影响了对第0号和5号子帧的资源配置。
发明内容
本申请提供了一种系统信息发送方法及装置，以解决由于预定义的子帧用于下行承载导致时频资源不能灵活配置的问题，为解决该技术问题，本申请公开了如下技术方案：
第一方面，本申请实施例提供了一种系统信息发送方法，该方法包括：基站在第 一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；在所述第一系统信息的时频资源上发送所述第一系统信息。
本方面提供的方法中，当基站接收到终端设备发送的上行触发信号之后，才根据确定的时频资源向终端设备下发第一系统信息，由于下发第一系统信息的时频资源相对于无线帧的帧头位置存在一个时间偏移量，所以能够保证基站发送的同步信号和携带第一系统信息的广播信道不是同时发送，使得基站在未检测到上行触发信号时不发送第一系统信息，在这种情况下，用于接收下行承载的时频资源由于只接收周期性发送的同步信号，且该同步信号占用的资源较小，进而剩余的大部分时频资源可进行动态配置，例如用于行上数据传输等，进而避免整个子帧的时频资源都被占用，提高了LTE系统资源配置的灵活性。
结合第一方面，在第一方面第一种实现中，所述方法还包括：所述基站在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；在所述第二系统信息的时频资源上发送所述第二系统信息。本方面中，当基站在无线帧的时频资源组中接收两个或两个以上的上行触发信号时，通过确定不同的时间偏移量，使得基站在不同的系统信息时频资源上发送系统信息，避免占用固定的时频资源，增强基站侧配置时频资源的灵活性，使得基站能够灵活地调度数据业务。
结合第一方面，在第一方面第二种实现中，所述基站在第一时频资源组中接收至少一个上行触发信号之前还包括：所述基站发送用于接收上行触发信号的第一指示信息，所述第一指示信息位于所述无线帧的第一时频资源组内，以使终端设备发送的上行触发信号能够被接收，进而生成并向终端设备发送系统信息。
结合第一方面以及第一方面第一种或第二种实现中的任意一种，在第一方面第三种实现中，根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源包括：根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的候选时频资源组；根据所述第一系统信息的候选时频资源组中确定发送所述第一系统信息的时频资源。
第二方面，本申请实施例提供了一种系统信息接收方法，方法包括：用户设备接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；根据所述同步信号或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一 个上行触发信号序列信息；根据所述服务小区的触发信号资源生成上行触发信号，并在所述上行触发信号时频资源上发送所述上行触发信号；根据所述上行触发信号的时频资源，在确定发送系统信息的第二时频资源组；在所述系统信息的第二时频资源组内接收系统信息。
本方面提供的方法中，用户设备在接收基站发送的系统信息之前，根据服务小区的触发信号资源生成上行触发信号，并发送给基站，避免用户设备在接收到系统信息之后发送触发信号，导致基站同时发送同步信号和携带有所述系统信息的广播信号，进而占用整个子帧时频资源，影响时频资源的灵活配置。
结合第二方面，在第二方面第一种实现中，所述根据所述同步信号确定所述服务小区的触发信号资源包括：根据所述同步信号确定服务小区的识别信息，或与所述服务小区相对应的识别信息，其中，与所述服务小区相对应的识别信息，是指与所述服务小区的识别信息具有相同功能，且能识别所述服务小区的识别信息；根据所述服务小区的识别信息，或与所述服务小区相对应的识别信息确定所述服务小区的触发信号资源。
结合第二方面，在第二方面第二种实现中，根据所述服务小区的触发信号资源生成上行触发信号包括：根据所述服务小区的触发信号资源确定触发信号的序列信息；根据所述触发信号序列信息生成所述上行触发信号。
结合第二方面，在第二方面第三种实现中，如果用户设备接收所述第二指示信息，则根据所述服务小区的触发信号资源生成上行触发信号包括：用户设备根据所述第二指示信息获取触发信号序列信息；根据所述触发信号序列信息生成所述上行触发信号。
结合第二方面以及第二方面第一种至第三种实现中的任意一种，在第二方面第四种实现中，在所述上行触发信号时频资源上发送所述上行触发信号包括：在发送所述上行触发信号之前检测是否接收到第一指示信息；如果接收到所述第一指示信息，则根据所述第一指示信息确定发送所述上行触发信号的时频资源，并在所述上行触发信号时频资源上发送所述上行触发信号，以使基站能够接收到发送的上行触发信号。
结合第二方面以及第二方面第一种至第四种实现中的任意一种，在第二方面第五种实现中，在所述第二时频资源组内接收系统信息包括：判断在所述第二时频资源组内是否接收到所述系统信息；如果用户设备在所述第二时频资源组内未接收到所述系统信息，则改变上行触发信号的格式，和/或提高发射功率，并按照改变后的格式，和/或提高后的发射功率再次发送所述上行触发信号，以保证基站能够接收到用户设备发送的上行触发信号。
结合第二方面以及第二方面第一种至第五种实现中的任意一种，在第二方面第六种实现中，所述第二时频资源组包括至少一个所述服务小区的系统信息资源，其中， 所述系统信息资源包括时域资源，频域资源和码字资源。
结合第二方面第六种实现，在第二方面第七种实现中，所述系统信息的频域资源与所述上行触发信号占用相同的频域子载波；所述系统信息的时域资源为所述用户设备发送触发信号之后指定时间间隔间内的时域资源；所述系统信息的码字资源包括所述系统信息扰码。
第三方面，本申请实施例还提供了一种基站，包括收发单元和处理单元，所述收发单元，用于在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；所述处理单元，用于根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；所述收发单元，还用于在所述第一系统信息的时频资源上发送所述第一系统信息。
结合第三方面，在第三方面第一种实现中，所述收发单元还用于在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；所述处理单元用于根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；所述收发单元还用于在所述第二系统信息的时频资源上发送所述第二系统信息。
结合第三方面，在第三方面第二种实现中，所述收发单元，还用于发送用于接收上行触发信号的第一指示信息，所述第一指示信息位于所述无线帧的第一时频资源组内。
结合第三方面以及第三方面第一种或第二种实现，在第三方面第三种实现中，所述处理单元，还用于根据所述至少一个第一上行触发信号的时频资源确定占用相同频域的子载波，根据所述相同频域的子载波确定所述第一系统信息的时频资源。
第四方面，本申请实施例还提供了一种用户设备，包括收发单元和处理单元，
所述收发单元，用于接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；所述处理单元用于根据所述同步信号，和/或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一个上行触发信号序列信息，以及，根据所述服务小区的触发信号资源生成上行触发信号；所述收发单元，还用于在所述上行触发信号时频资源上发送所述上行触发信号；所述处理单元，还用于根据所述上行触发信号的时频资源，在无线帧内确定第二时频资源组；所述收发单元还用于在所述第二时频资源组内接收系统信息。
此外，所述用户设备包括还用于实现上述第二方面第一种至第七种中的全部或部分方法步骤的单元。
第五方面，本申请实施例还提供了一种信息发送系统，所述系统包括基站和至少一个用户设备，所述基站包括收发器和处理器，所述用户设备包括收发器和处理器，其中，
用户设备接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；根据所述同步信号或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：一组上行触发信号时频资源和/或一组上行触发信号码字；
所述用户设备还根据所述服务小区的触发信号资源生成上行触发信号，并在所述上行触发信号时频资源上发送所述上行触发信号；
所述基站在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量，以及，在所述第一系统信息的时频资源上发送所述第一系统信息；
所述用户设备根据所述上行触发信号的时频资源，在确定发送系统信息的第二时频资源组，并在所述系统信息的第二时频资源组内接收所述第一系统信息。
所述基站还用于实现上述第一方面第一种至第一方面第三种中的任意一种技术方案实现方式；所述用户设备还用于实现上述第二方面至第二方面第七种中的任意一种技术方案实现方式。
本方面提供的系统，基站在空闲状态下只周期性地发送同步信号，在基站未检测到上行触发信号之前时，不下发系统信息，在这种的情况下，由于同步信号占用的适配资源较小，因此剩余的全部子帧时频资源都可以进行动态配置，灵活匹配服务小区的上行业务和下行业务，避免基站同时发送同步信号和携带有系统信息的广播信号，导致占用整个时频资源，进而影响LTE系统资源配置的灵活性。
第六方面，本申请还提供了一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时可包括本发明提供一种系统信息发送方法及装置的各实现方式中的部分或全部步骤。
附图说明
为了更清楚地说明本申请的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1是TDD系统中一种无线帧的示意图；
图2是本申请实施例提供的一种系统信息发送方法的流程示意图；
图3是本申请实施例提供的一种用户设备触发系统信息的示意图；
图4是本申请实施例提供的一种系统信息接收方法的流程示意图；
图5是本申请实施例提供的一种用户设备与基站发送系统信息的流程图；
图6是本申请实施例提供的一种基站的结构框图；
图7是本申请实施例提供的一种用户设备的结构框图；
图8是本申请实施例提供的另一种基站的结构示意图；
图9是本申请实施例提供的另一种用户设备的结构示意图。
具体实施方式
本申请实施例提供的一种系统信息发送方法及装置，主要应用于5G通信系统，LTE系统或LTE演进系统中，也可应用于单载波和多载波，本方法用于基站(缩写：eNB)向用户设备(缩写：UE)发送系统信息，所述系统信息包括：系统带宽信息，系统帧号，以及与用户设备接入相关的系统信息等。
本申请中的用户设备，也可以是终端设备，用户终端，客户端等。具体地，所述终端设备还包括：手机、平板电脑、掌上电脑或者移动互联网设备等。
本申请实施例中涉及的服务小区可以为网络侧设备给用户设备配置的服务小区，也可以指为用户设备服务的服务小区，也可以指用户设备接入的服务小区。本发明实施例中的服务小区(英文：serving cell)也可以称为载波(英文：component carrier)。本发明实施例中的服务小区可以为用户设备的主服务小区(英文：primary serving cell)，也可以为用户设备的辅服务小区(英文：secondary serving cell)。
在LTE系统中，基站与用户设备之间通过无线帧进行上行或下行数据传输，所述无线帧为LTE系统中的一个时间单位，LTE系统中规定每个无线帧包括10个子帧，时间长度10ms。无线帧结构由不同类型子帧的组合确定，TDD系统中，无线帧结构有确定的7种类型。每个子帧的长度1ms，且包含多种类型；在TDD模式下的子帧包括下行子帧，上行子帧和特殊子帧；在频分双工(英文：Frequency Division Duplexing，缩写：FDD)模式下包括下行子帧和上行子帧。
本申请为了能够在下一代通信系统中提供提高资源配置的灵活性，在系统设计时尽量减少预定义的时频资源，最小化持续发送的信号，进而使得可灵活配置的时频资源最大化，本申请的一个实施例提供了一种系统信息发送方法，如图2所示，所述方法包括：
步骤201：基站在第一无线帧内的第一时频资源组中接收至少一个第一上行触发 信号。所述触发信号的形式类似于LTE中PRACH信号的形式。
所述时频资源是指在LTE系统中，时域和频域用于传输物理信道和物理信号的资源，具体的LTE系统中规定在时域上传输物理信号和或物理信号的最小时间单位为一个OFDM符号，在频域上最小的单位为一个子载波，包括所述一个时域和频域的最小资源单位的资源被称为一个资源单元(英文:resource element,缩写:RE)；所述时频资源包括频域和时域的一组RE，例如，在时域上包括一个子帧，每个子帧包括14个OFDM符号，在频域上包括72个子载波。
其中，所述第一时频资源中包括至少一个子帧，例如图1中的一个无线帧内包括第0至第9共10个子帧，其中预定义DL0和DL5为用于承载下行传输的子帧，则步骤201中所述第一时频资源组为第1至第4子帧所组成的时频资源组，和/或第6至第9子帧所组成的时频资源组，在这两个时频资源组中每个子帧的时频资源上都可接收所述上行触发信号。在第一时频资源组内可以接收至少一个上行触发信号，并且在第一时频资源组中的每个子帧可以接收至少一个上行触发信号。
此外，在接收上行触发信号之前，基站根据预设频率周期性地发送同步信号，所述同步信号通过同步信号序列承载了服务小区的ID信息或识别信息。
步骤202：基站根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量。
根据第一上行触发信号的时频资源确定发送第一系统信息的时频资源具体包括：根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的候选时频资源组；从所述第一系统信息的候选时频资源组中确定所述第一系统信息的时频资源。
如图3所示，基站在第2号子帧的时频资源上接收到用户设备发送的上行触发信号，根据用户设备侧触发信号的时频资源确定第4至第8号子帧组成的时频资源组，即所述第一系统信息的候选时频组来发送系统信息。其中，所述基站侧的无线帧由第0至第9号共10个子帧组成。所述基站根据在第一时频资源组中接收到触发信号的资源位置的数量，和/或所述发送触发信号时频资源组内的子帧类型，决定在所述时频资源组中发送系统信息的时频资源。
具体地，基站根据在第一时频资源组中接收到的触发信号确定发送系统信息的时频资源组的过程为：如图3所示，第一时频资源组包括子帧0-3；基站在所述第一时频资源组中接收到至少一个上行触发信号，若所述至少一个上行触发信号对应的时频资源在时域上，起始位置位于子帧2，则基站确定发送系统信息的时频资源组为子帧4-8组成的时频资源组；即所述起始位置子帧距离基站确定发送系统信息的时频资源组中最后一个子帧的时间偏移为固定时间偏移量，在本实施例中的时间间隔为6个子 帧。
本申请中所述系统信息的资源包括：时间，频率和码字资源等。所述码字资源包括根据所述上行触发信号的时频资源确定的系统信息扰码。其中，上行触发信号的时频资源与所述系统信息的时频资源之间的关系是：所述系统信息的频域资源与所述上行触发信号占用相同的频域子载波，所述系统信息的时域资源相对于用户设备发送所述上行触发信号的时域资源存在时间偏移量，所述时间偏移量为至少一个子帧和/或一个OFDM(英文：Orthogonal Frequency Division Multiplexing，中文：正交频分复用)符号。
此外，基站还可以指示用户设备发送触发信号的时频资源，例如，基站发送下行公共控制指令信息或针对特定用户设备的下行控制指示信息，用于指示发送触发信号资源信息的时频资源。
步骤203：基站在所述第一系统信息的时频资源上发送所述第一系统信息。进一步地可通过下发承载第一系统信息的广播信道发送。
进一步地，如果基站在至少两个时频资源位置上发送系统信息，且所述至少两个时频资源分别位于至少两个不同的无线帧，则确定发送每个系统信息的时频资源相对于该时频资源所在无线帧的帧头起始位置存在不同的时间偏移量。即发送第一系统信息的时频资源相对于第一无线帧的帧头位置有第一时间偏移量，发送第二系统信息的时频资源相对于第二无线帧的帧头位置有第二时间偏移量，以此类推，进而保证每个发送的系统信息的时频资源与其所在的无线帧的帧头起始位置不同，避免下行预设固定时频资源被占用。
在本申请的实施例中，基站无需占用固定的时频资源发送系统信息，使得原本发送系统信息的子帧也可以改变子帧类型，例如：改变为上行传输子帧，提高了系统的资源灵活性。
进一步地，上述步骤201中基站接收至少一个上行触发信号包括：基站在同一个无线帧内的时频资源组中不同时频资源位置上，接收两个或两个以上的上行触发信号，或者，基站在不同的无线帧，包括连续或者不连续的无线帧内的不同时频资源上各自接收两个或两个以上的上行触发信号。
如果基站在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；则确定发送第二系统信息的时频资源的步骤包括：根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；所述时间偏移量为至少一个子帧和/或一个OFDM符号。确定第二系统信息的时频资源之后，在该第二系统信息的时频资源上发送所述第二系统信息。使得不同基站在不同的系统信息时频资源 上发送系统信息，避免占用固定的时频资源，增强基站侧配置时频资源的灵活性，使得基站能够灵活地调度上行或下行数据业务。
进一步地，上述步骤201中，基站在无线帧的至少一个时频资源位置上接收上行触发信号包括：基站在所述上行触发信号的时频资源位置所在的子帧的起始位置发送第一指示信息，所述第一指示信息用于指示当前子帧是否可以接收上行触发信号；所述指示信息还包括在整个无线帧进行统一指示，以通知用户设备是否能够发送所述上行触发信号。
如果所述第一指示信息中指示当前子帧可接收上行触发信号，则在所述无线帧的第一时频资源组内的至少一个时频资源位置上接收所述上行触发信号。如果接收两个或两个以上的上行触发信号，则所述基站根据预定义的时间长度以及每个所述上行触发信号，将所述系统消息发送给接收的所述每个上行触发信号所对应的用户设备。或者，所述系统信息的时频资源由接收到的多组触发信号的时频资源位置确定，例如，在子帧n接收到的上行触发信号，则会在小于子帧n+k的相同频域位置发送系统信息。
在上述步骤201，基站在接收到上行触发信号之前还包括用户设备生成并发送上行触发信号，如图4所示，具体过程如下：
步骤401：用户设备接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息。
步骤402：用户设备根据所述同步信号或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一个上行触发信号序列信息；
在步骤402中，若用户设备接收的指示信息为服务小区的同步信号，则用户设备根据所述同步信号确定所述服务小区的触发信号资源。具体地，首先，用户设备根据所述同步信号确定所述服务小区的ID信息，或与所述服务小区相对应的ID信息；其次，用户设备再根据所述服务小区的ID信息，或与所述服务小区相对应的ID信息确定所述服务小区的触发信号资源。
其中，所述服务小区的ID信息可以是Cell-ID，也可以是其它识别信息，Cell-ID是网络中服务小区的唯一标识；而与所述服务小区相对应的ID信息，是指具有与Cell-ID相同功能，且可以识别所述服务小区的ID信息，例如，超小区ID(Hyper-cell ID)，它可以对一组服务小区进行唯一标识。
所述上行触发信号资源包括：生成触发信号的码字信息组，发送触发信号的时频资源信息，触发信号的初始格式信息，触发信号的初始功率信息等。例如，触发信号的时域资源为一个无线帧内全部子帧或部分子帧，频域资源与接收同步信号的频域资源相同或相差一个频域偏移量；触发信号的初始格式信息包括，连续占用OFDM符号的个数，或重复发送的数量，触发信号发送的时间长度，触发信号的重复次数；触 发信号的初始功率信息包括，初次发射触发信号的功率大小，以及重传时功率增量大小。其中，触发信号格式信息包括，触发信号发送的时间长度，触发信号的重复次数。
在上述步骤402中，用户设备接收的指示信息还可以是基站发送的指示信息，或者触发序列信息，其中，所述触发序列信息包括生成触发信号的码字信息或码字信息组，发送触发信号的时频资源位置，触发信号的初始格式信息，触发信号的初始功率信息。
步骤403：用户设备根据所述服务小区的触发信号资源生成上行触发信号，并在所述上行触发信号时频资源上发送所述上行触发信号。
在步骤403中，用户设备根据所述触发信号资源生成触发信号具体包括：如果所述用户设备接收所述服务小区的同步信号，则根据触发信号资源确定触发信号的序列信息组，并从所述序列信息组中随机选取一个序列，作为触发信号序列，生成所述触发信号。
如果所述用户设备接收的第二指示信息中包括触发信号序列信息，则用户设备根据所述服务小区的触发信号资源生成上行触发信号包括：用户设备根据所述第二指示信息获取触发信号序列，用户设备根据所述触发信号序列生成所述上行触发信号。所述触发信号序列信息包括生成触发信号的序列，还包括生成该触发信号序列基本参数或指令等信息。
进一步地，步骤403中用户设备将生成的触发信号发送给基站之前，还需要判断是否发送上行触发信号，具体过程为：
所述用户设备在确定的上行触发信号时频资源所在的子帧的起始位置，检测是否有所述第一指示信息，如检测到发送触发信号的发送指令，则用户设备在确定的触发信号时频资源位置发送上行触发信号；若未检测到发送触发信号的第一指示信息，用户设备则不发送触发信号；所述第一指示信息可包括：下行控制指示信息用于指示当前子帧类型的指示信息。用户设备通过在发送上行触发信号之前，判断基站是否有能够接收上行触发信号，并发送系统信息，避免用户设备发送无效的上行触发信号，提高了系统信息传输发送的安全性和准确性。
用户设备将生成的上行触发信号发送给基站后，基站根据该上行触发信号执行上述步骤201至步骤203，将系统信息通过广播信道发送给用户设备。在步骤303之后，还包括：
步骤404：用户设备根据所述上行触发信号的时频资源，在无线帧内确定第二时频资源组。即用户设备根据所述发送的上行触发信号确定一个或一组所述服务小区系统信息资源。
在用户设备确定第二时频资源组的过程中，用户设备根据上行触发信号的时频资源所在的子帧位置，确定检测服务小区系统信息的时频资源位置，即所述第二时频资 源位置。例如图3所示，用户设备根据发送的上行触发信号的时频资源所在的子帧位置，确定检测服务小区系统信息的时频资源位置；例如，用户设备在子帧n发送触发信号后，从子帧n+1开始到n+k子帧结束的k个子帧的时间间隔内，检测是否接收到来自基站的系统消息。
图3中，基站侧，系统信息发送的时频资源位置由所述用户设备接收的同步信号的时频资源位置确定；例如，用户设备在子帧n中的第m个OFDM符号的预定频域位置检测到所述服务小区的同步信号，所述用户设备在子帧n+l的第m+v个OFDM符号检测所述服务小区的系统信息；所述系统信息可能占用一个或多个OFDM符号，如上所述用户设备会从第m+v个OFDM符号开始接收系统信息。
若所述用户设备在所述的时频资源内未检测到系统消息，所述用户设备重复执行上述步骤403，在随后的触发信号时频资源上继续发送上行触发信号；或所述用户设备开启计时器，在计时时长结束后，再重复步骤403。
步骤405：用户设备在所述第二时频资源组内接收系统信息。
上述用户设备进行重新发送触发信号的过程，还包括，用户设备改变触发信号的初始格式和/或发射功率，在下一次发送触发信号时，使用更新后的触发信号格式和/或发射功率，具体，采用更多的重复次数和/或采用更大的发射功率；若触发信号的重复次数和发射功率达到预定义的最大值，则触发信号的格式和发射功率不再改变。
当用户设备未接收到基站发送的系统信息时，通过改变的初始格式，或者增大发射功率以使发送的上行触发信号能够达到基站，进而使基站能够接收该上行触发信号，并发送系统信息。
本方法的实施例中，当基站接收到用户设备发送的触发信号之后，再根据确定的时频资源向用户设备下发系统信息，由于下发信息系统的时频资源有一个时间偏移量，所以保证基站发送的同步信号和携带所述系统信息的广播信号不是同时发送，即在基站未检测到上行触发信号时不发送系统信息，在这种情况下，用于接收下行承载的时频资源由于只接收同步信号，占用的资源小，剩余的大部分时频资源能够进行动态配置，例如行上行数据传输，进而避免整个子帧的时频资源都被占用，提高了LTE系统资源配置的灵活性。
在本申请的另一个实施例中，提供了一种信息发送系统，所述系统包括基站和至少一个用户设备，如图5所示，为基站向用户设备发送系统信息的信令图，具体地，在该系统中系统信息的生成和发送的过程如下：
S501：基站向用户设备发送服务小区的同步信号或第二指示信号；
S502：用户设备接收该服务小区的同步信号或第二指示信号；
S503：用户设备根据接收的同步信号或第二指示信号确定服务小区的触发信号资 源，具体地，用户设备根据服务小区的一组同步信号确定ID_I信息或识别信息，并根据ID_I信息或识别信息确定服务小区的触发信号资源；其中，所述服务小区的触发信号资源包括：一组上行触发信号时频资源和/或一组上行触发信号码字；
S504：用户设备根据所述服务小区的触发信号资源生成上行触发信号，并判断是否可以发送该上行触发信号；
S505：如果用户设备检测或者接收到来自基站的第一指示信息，所述第一指示信息用于指示用户设备发送触发信号；那么执行步骤S6；
S506：用户设备将生成的上行触发信号发送给所述基站；
S507：基站在无线帧的第一时频资源组内的至少一个时频资源位置上接收至少一个上行触发信号；
S508：基站根据所述至少一个上行触发信号的时频资源位置确定发送第一系统信息的频资源位置，所述第一时频资源位置在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；
S509：基站在所述第一系统信息的时频资源位置上发送第一系统信息；
S510：用户设备根据所述上行触发信号的时频资源确定第二时频资源组；
S511：用户设备在所述第二时频资源组内接收第一系统信息；
S512：用户设备检测是否接收到用户设备发送的所述第一系统信息；
S513：用户设备如果未检测或接收到第一系统信息，则改变上行触发信号的初始格式，或者提高发射功率；
S514：用户设备按照改变后的初始格式或者提高后的发射功率再次发送所述上行触发信号，以保证基站能够接收到上行触发信号，并发送系统信息。
进一步地，在上述步骤S509中，所述基站还用于在所述无线帧上接收到第二上行触发信号，根据所述第二上行触发信号的确定发送广播信号的第二时频资源位置，并在所述第二时频资源位置上发送所述系统信息，其中，所述第二时频资源位置在所述指定时间间隔间相对于所述无线帧的帧头位置存在第二时间偏移量，且第二时间偏移量不等于所述第一时间偏移量。
本实施例提供的系统，基站在空闲状态下只周期性地发送同步信号，在基站未检测到上行触发信号之前时，不下发系统信息，在这种的情况下，由于同步信号占用的适配资源较小，因此剩余的全部子帧时频资源都可以进行动态的配置，灵活匹配小区的上行业务和下行业务，避免基站同时发送同步信号和携带有系统信息的广播信号，导致占用整个时频资源，进而影响LTE系统资源配置的灵活性。
此外，对应与上述系统的实施例，本申请还提供了一种基站600，如图6所示， 该基站包括：收发单元601和处理单元602。其中，收发单元601，用于在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；处理单元602，用于根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；收发单元601，还用于在所述第一系统信息的时频资源上发送所述第一系统信息。
进一步地，收发单元601，还用于在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；处理单元602，用于根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；收发单元601，还用于在所述第二系统信息的时频资源上发送所述第二系统信息。
进一步地，收发单元601，还用于发送用于接收上行触发信号的第一指示信息，所述第一指示信息位于所述无线帧的第一时频资源组内。
处理单元602，还用于根据所述至少一个第一上行触发信号的时频资源确定占用相同频域的子载波，根据所述相同频域的子载波确定所述第一系统信息的时频资源。
此外，本实施例还提供了一种用户设备700，如图7所示，包括收发单元701和处理单元702。
收发单元701，用于接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；根据所述同步信号，和/或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一个上行触发信号序列信息，以及，根据所述服务小区的触发信号资源生成上行触发信号；在所述上行触发信号时频资源上发送所述上行触发信号；以及，根据所述上行触发信号的时频资源，在无线帧内确定第二时频资源组。所述收发单元701，还用于在所述第二时频资源组内接收系统信息。
进一步地，处理单元702，还用于根据所述同步信号确定服务小区的识别信息，或与所述服务小区相对应的识别信息，其中，与所述服务小区相对应的识别信息，是指与所述服务小区的识别信息具有相同功能，且能识别所述服务小区的识别信息；根据所述服务小区的识别信息，或与所述服务小区相对应的识别信息确定所述服务小区的触发信号资源。
进一步地，处理单元702，还用于根据所述服务小区的触发信号资源确定触发信号的序列信息，并根据所述触发信号序列信息生成所述上行触发信号。以及，如果接收所述第二指示信息，则处理单元702根据所述第二指示信息获取触发信号序列信息，并根据所述触发信号序列信息生成所述上行触发信号。
处理单元702，还用于在发送所述上行触发信号之前检测是否接收到第一指示信息；如果接收到所述第一指示信息，则根据所述第一指示信息确定发送所述上行触发信号的时频资源，并在所述上行触发信号时频资源上发送所述上行触发信号。
此外，处理单元702，还用于在所述第二时频资源组内未接收到所述系统信息，则改变上行触发信号的格式，和/或提高发射功率，并按照改变后的格式，和/或提高后的发射功率再次发送所述上行触发信号。
其中，所述第二时频资源组包括至少一个所述服务小区的系统信息资源，其中，所述系统信息资源包括时域资源，频域资源和码字资源。可选的，所述系统信息的频域资源与所述上行触发信号占用相同的频域子载波；所述系统信息的时域资源为所述用户设备发送触发信号之后指定时间间隔间内的时域资源；所述系统信息的码字资源包括所述系统信息扰码。
在本实施例中，当基站接收到终端设备发送的上行触发信号之后，才根据确定的时频资源向终端设备下发第一系统信息，由于下发第一系统信息的时频资源相对于无线帧的帧头位置存在一个时间偏移量，所以能够保证基站发送的同步信号和携带第一系统信息的广播信道不是同时发送，使得基站在未检测到上行触发信号时不发送第一系统信息，在这种情况下，用于接收下行承载的时频资源由于只接收周期性发送的同步信号，且该同步信号占用的资源较小，进而剩余的大部分时频资源可进行动态配置，例如用于行上数据传输等，进而避免整个子帧的时频资源都被占用，提高了LTE系统资源配置的灵活性。
对应于上述基站600和用户设备700的实施例，在具体硬件中本申请还提供一种基站和一种用户设备，如图8和图9所示，所述基站包括：收发器801，处理器802，通信总线803和存储804，其中，在收发器801中包括至少一个通信接口，和/或IO接口。对应地，在用户设备包括：收发器901，处理器902，通信总线903和存储904，收发器901中包括至少一个通信接口和/或IO接口。
所述基站中的收发器801为用于实现上述实施例中接收单元601的全部功能的硬件设备，处理器802为实现上述实施例中处理单元602中的全部功能的硬件设备；对应地，所述用户设备中的收发器901为用于实现上述实施例中接收单元701的全部功能的硬件设备，处理器902为实现上述实施例中处理单元702中的全部功能的硬件设备。
在一个具体的实施例中还提供了由基站和至少一个用户设备组成的系统信息发送的系统，该基站和用户设备均应用于上述实施例所述的硬件设备或装置单元，该系统用于实现基站向用户设备下发系统信息，具体下发过程包括：
用户设备，接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；根据所述同步信号或第二指示信息确定所述服务小区的触发信 号资源，其中，所述服务小区的触发信号资源包括：一组上行触发信号时频资源和/或一组上行触发信号码字。
所述用户设备，还根据所述服务小区的触发信号资源生成上行触发信号，并在所述上行触发信号时频资源上发送所述上行触发信号。
所述基站，在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量，以及，在所述第一系统信息的时频资源上发送所述第一系统信息。
所述用户设备，根据所述上行触发信号的时频资源，在确定发送系统信息的第二时频资源组，并在所述系统信息的第二时频资源组内接收所述第一系统信息。
在上述提供的实施例，具体的基站和用户设备的硬件结构中，所述处理器可以是一个通用中央处理器(CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，或一个或多个用于控制本发明方案程序执行的集成电路。
通信总线可包括一通路，在上述组件或设备之间传送信息，即用户设备与基站之间的通信。所述通信接口，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(RAN)，无线局域网(Wireless Local Area Networks，WLAN)等。
存储器可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、只读光盘(Compact Disc Read-Only Memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过总线与处理器相连接。存储器也可以和处理器集成在一起。其中，所述存储器用于存储执行本发明方案的应用程序代码，并由处理器来控制执行。所述处理器用于执行所述存储器中存储的应用程序代码。
本申请实施例还提供了一种计算机存储介质，用于储存上述实施例提供的一种系统信息发送方法，和系统信息接收方法所用的计算机软件指令，其包含用于执行上述方法实施例所设计的程序。通过执行存储的程序，可以实现系统信息的发送和接收。
尽管在此结合各实施例对本发明进行了描述，然而，在实施所要求保护的本发明过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理 解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
本领域技术人员应明白，本发明的实施例可提供为方法、装置(设备)、或计算机程序产品。因此，本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。计算机程序存储/分布在合适的介质中，与其它硬件一起提供或作为硬件的一部分，也可以采用其他分布形式，如通过Internet或其它有线或无线电信系统。
本发明是参照本发明实施例的方法、装置(设备)和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
尽管结合具体特征及其实施例对本发明进行了描述，显而易见的，在不脱离本发明的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本发明的示例性说明，且视为已覆盖本发明范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。

Claims (24)

  1. 一种系统信息发送方法，其特征在于，方法包括：
    基站在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；
    根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；
    在所述第一系统信息的时频资源上发送所述第一系统信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述基站在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；
    根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；
    在所述第二系统信息的时频资源上发送所述第二系统信息。
  3. 根据权利要求1所述的方法，其特征在于，所述基站在第一时频资源组中接收至少一个上行触发信号之前还包括：
    所述基站发送用于接收上行触发信号的第一指示信息，所述第一指示信息位于所述无线帧的第一时频资源组内。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源包括：
    根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的候选时频资源组；
    根据所述第一系统信息的候选时频资源组确定发送所述第一系统信息的时频资源。
  5. 一种系统信息接收方法，其特征在于，方法包括：
    用户设备接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；
    根据所述同步信号或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一个上行触发信号序列信息；
    根据所述服务小区的触发信号资源生成上行触发信号，并在所述上行触发信号时频资源上发送所述上行触发信号；
    根据所述上行触发信号的时频资源，在确定发送系统信息的第二时频资源 组；
    在所述系统信息的第二时频资源组内接收系统信息。
  6. 根据权利要求5所述的方法，其特征在于，所述根据所述同步信号确定所述服务小区的触发信号资源包括：
    根据所述同步信号确定服务小区的识别信息，或与所述服务小区相对应的识别信息，其中，与所述服务小区相对应的识别信息，是指与所述服务小区的识别信息具有相同功能，且能识别所述服务小区的识别信息；
    根据所述服务小区的识别信息，或与所述服务小区相对应的识别信息确定所述服务小区的触发信号资源。
  7. 根据权利要求5所述的方法，其特征在于，根据所述服务小区的触发信号资源生成上行触发信号包括：
    根据所述服务小区的触发信号资源确定触发信号的序列信息；
    根据所述触发信号序列信息生成所述上行触发信号。
  8. 根据权利要求5所述的方法，其特征在于，如果用户设备接收所述第二指示信息，则根据所述服务小区的触发信号资源生成上行触发信号包括：
    用户设备根据所述第二指示信息获取触发信号序列信息；
    根据所述触发信号序列信息生成所述上行触发信号。
  9. 根据权利要求5-8任一项所述的方法，其特征在于，在所述上行触发信号时频资源上发送所述上行触发信号包括：
    在发送所述上行触发信号之前检测是否接收到第一指示信息；
    如果接收到所述第一指示信息，则根据所述第一指示信息确定发送所述上行触发信号的时频资源，并在所述上行触发信号时频资源上发送所述上行触发信号。
  10. 根据权利要求5-9任一项所述的方法，其特征在于，在所述第二时频资源组内接收系统信息包括：
    判断在所述第二时频资源组内是否接收到所述系统信息；
    如果用户设备在所述第二时频资源组内未接收到所述系统信息，则改变上行触发信号的格式，和/或提高发射功率，并按照改变后的格式，和/或提高后的发射功率再次发送所述上行触发信号。
  11. 根据权利要求5-10任一项所述的方法，其特征在于，所述第二时频资源组包括至少一个所述服务小区的系统信息资源，其中，所述系统信息资源包括时域资源，频域资源和码字资源。
  12. 根据权利要求11所述的方法，其特征在于，
    所述系统信息的频域资源与所述上行触发信号占用相同的频域子载波；
    所述系统信息的时域资源为所述用户设备发送触发信号之后指定时间间隔 间内的时域资源；
    所述系统信息的码字资源包括所述系统信息扰码。
  13. 一种基站，其特征在于，所述基站包括：收发单元和处理单元，
    所述收发单元，用于在第一无线帧内的第一时频资源组中接收至少一个第一上行触发信号；
    所述处理单元，用于根据所述至少一个第一上行触发信号的时频资源确定发送第一系统信息的时频资源，其中，所述第一系统信息的时频资源在时域上的起始位置相对于所述第一系统信息所在无线帧的帧头位置存在第一时间偏移量；
    所述收发单元，还用于在所述第一系统信息的时频资源上发送所述第一系统信息。
  14. 根据权利要求13所述的基站，其特征在于，
    所述收发单元，还用于在第二无线帧内的第二时频资源组中接收至少一个第二上行触发信号；
    所述处理单元，还用于根据所述至少一个第二上行触发信号的时频资源确定发送第二系统信息的时频资源，其中，所述第二系统信息的时频资源在时域上的起始位置相对于所述第二系统信息所在无线帧的帧头位置存在第二时间偏移量，所述第一时间偏移量与所述第二时间偏移量不同；
    所述收发单元，还用于在所述第二系统信息的时频资源上发送所述第二系统信息。
  15. 根据权利要求13所述的基站，其特征在于，
    所述收发单元，还发送用于接收上行触发信号的第一指示信息，所述第一指示信息位于所述无线帧的第一时频资源组内。
  16. 根据权利要求13-15任一项所述的基站，其特征在于，
    所述处理单元，还用于根据所述至少一个第一上行触发信号的时频资源确定占用相同频域的子载波，根据所述相同频域的子载波确定所述第一系统信息的时频资源。
  17. 一种用户设备，其特征在于，所述用户设备包括收发单元和处理单元，
    所述收发单元，用于接收服务小区的同步信号或第二指示信息，所述第二指示信息用于指示触发信号序列信息；
    所述处理单元，用于根据所述同步信号，和/或第二指示信息确定所述服务小区的触发信号资源，其中，所述服务小区的触发信号资源包括：至少一个上行触发信号的时频资源，和/或至少一个上行触发信号序列信息，以及，根据所述服务小区的触发信号资源生成上行触发信号；
    所述收发单元，还用于在所述上行触发信号时频资源上发送所述上行触发信号；
    所述处理单元，还用于根据所述上行触发信号的时频资源，在无线帧内确定第二时频资源组；
    所述收发单元，还用于在所述第二时频资源组内接收系统信息。
  18. 根据权利要求17所述的用户设备，其特征在于，
    所述处理单元，还用于根据所述同步信号确定服务小区的识别信息，或与所述服务小区相对应的识别信息，其中，与所述服务小区相对应的识别信息，是指与所述服务小区的识别信息具有相同功能，且能识别所述服务小区的识别信息；根据所述服务小区的识别信息，或与所述服务小区相对应的识别信息确定所述服务小区的触发信号资源。
  19. 根据权利要求17所述的用户设备，其特征在于，
    所述处理单元，还用于根据所述服务小区的触发信号资源确定触发信号的序列信息，并根据所述触发信号序列信息生成所述上行触发信号。
  20. 根据权利要求19所述的用户设备，其特征在于，如果接收所述第二指示信息，则所述处理单元，还用于根据所述第二指示信息获取触发信号序列信息，并根据所述触发信号序列信息生成所述上行触发信号。
  21. 根据权利要求17-20任一项所述的用户设备，其特征在于，
    所述处理单元，还用于在发送所述上行触发信号之前检测是否接收到第一指示信息；如果接收到所述第一指示信息，则根据所述第一指示信息确定发送所述上行触发信号的时频资源，并在所述上行触发信号时频资源上发送所述上行触发信号。
  22. 根据权利要求17-21任一项所述的用户设备，其特征在于，
    所述处理单元，还用于判断在所述第二时频资源组内是否接收到所述系统信息，如果在所述第二时频资源组内未接收到所述系统信息，则改变上行触发信号的格式，和/或提高发射功率，
    所述收发单元，还用于按照改变后的格式，和/或提高后的发射功率再次发送所述上行触发信号。
  23. 根据权利要求22所述的用户设备，其特征在于，所述第二时频资源组包括至少一个所述服务小区的系统信息资源，其中，所述系统信息资源包括时域资源，频域资源和码字资源。
  24. 根据权利要求23所述的用户设备，其特征在于，
    所述系统信息的频域资源与所述上行触发信号占用相同的频域子载波；
    所述系统信息的时域资源为所述用户设备发送触发信号之后指定时间间隔间内的时域资源；
    所述系统信息的码字资源包括所述系统信息扰码。
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