WO2016187931A1 - 指示方法、指示系统、获取方法、获取系统和通信系统 - Google Patents

指示方法、指示系统、获取方法、获取系统和通信系统 Download PDF

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Publication number
WO2016187931A1
WO2016187931A1 PCT/CN2015/082986 CN2015082986W WO2016187931A1 WO 2016187931 A1 WO2016187931 A1 WO 2016187931A1 CN 2015082986 W CN2015082986 W CN 2015082986W WO 2016187931 A1 WO2016187931 A1 WO 2016187931A1
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Prior art keywords
length
region
area
control
terminal
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PCT/CN2015/082986
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English (en)
French (fr)
Inventor
朱亚军
李明菊
张云飞
何成名
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for indicating a control region on a channel idle detection subframe, an indication system for a control region on a channel idle detection subframe, and a channel idle detection subframe.
  • LAA licensed-assisted access
  • the transmission of mobile communication can be carried on an unlicensed spectrum, such as the 5 GHz band.
  • unlicensed spectrum are currently mainly used in systems such as Wi-Fi, Bluetooth, radar, and medical.
  • the system can work in two ways.
  • One is Supplemental Downlink (SDL), that is, only downlink transmission subframes; the other is TDD (Time Division Duplex).
  • SDL Supplemental Downlink
  • TDD Time Division Duplex
  • the mode includes both a downlink subframe and an uplink subframe.
  • Supplementary downlink can only be used by carrier aggregation technology (as shown in Figure 1):
  • the LAA system first performs the LBT (Listen Before Talk) mechanism before occupying the unlicensed channel. That is, it is necessary to first perform a CCA test to determine whether the channel is idle. If the channel is judged to be idle, the LAA system can occupy the channel if To determine that the channel is busy, the LAA system needs to wait for the channel to be idle before occupying the channel.
  • LBT Listen Before Talk
  • the mechanism of LBT is divided into two types.
  • One is the LBT mechanism based on frame structure (FBE). Under this mechanism, the period of LBT is fixed, and the time of CCA (channel clear assessment) is The beginning of the cycle.
  • the other is the LBT mechanism based on load (LBE).
  • the main principle of the mechanism is to perform channel detection immediately when the load arrives. If the detection channel is idle, the data service is sent immediately; if the detection channel is busy, Then, a number N is randomly selected. In the next channel detection time, if the channel is detected to be busy, N is unchanged. If the channel is detected to be idle, N-1, when N is reduced to 0, data can be transmitted.
  • the terminal cannot know from which position to start receiving the downlink on the CCA.
  • the control channel PCFICH is also unable to know the size of the control region, and thus the PCFICH (Physical Control Format Indicator Channel), the PHICH (Physical Hybird ARQ Indicator Channel), and the PDCCH (Physical Hybird Indicator Channel) are not known.
  • the start position of the downlink control channel such as the Physical Downlink Control Channel, is as shown in FIG. 2, and thus the control signaling carried on the downlink control channel PCFICH, PHICH, and (E)PDCCH cannot be received, according to the Control signaling performs related operations.
  • the present invention is based on the above problems, and proposes a new technical solution, so that the terminal can clarify the starting position and length of the control region on the CCA subframe, and accurately receive the downlink control channel, thereby accurately acquiring the downlink control. Control signaling carried on the channel.
  • an aspect of the present invention provides a method for indicating a control region on a channel idle detection subframe for a device having a base station function, including: transmitting indication information to a terminal serving the device having the base station function; Instructing the terminal to obtain the letter from the indication information
  • the terminal obtains the first control by sending the indication information to the terminal serving the device with the function of the base station, and instructing the terminal to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information.
  • the length of the area and the first starting position so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the control of the terminal with the function of the base station, and of course
  • the terminal may be located in a small cell where the device having the function of the base station is located, or may be located in a neighboring small cell adjacent to the small cell where the device having the function of the base station is located, as long as it is a terminal served by the device having the function of the base station, and
  • the device having the function of the base station includes a base station, a micro cell base station implemented by a communication device (such as a smart phone, etc.), and the like.
  • the indication information further includes: radio resource control signaling, media access control unit, or physical layer signaling that carries a fixed first area length and a fixed first start position. Or carrying radio resource control signaling, media access control unit or physical layer signaling with a preset first region length and a preset first starting location, and the serving to the device having the base station function
  • the process of sending the indication information by the terminal specifically includes: sending, by using the licensed frequency band or the unlicensed frequency band, the radio resource control signaling and the medium access control carrying the fixed first area length and the fixed first starting position to the terminal Transmitting the radio resource control signaling and the medium access control carrying the preset first area length and the preset first starting position to the terminal by using the authorized frequency band or the unlicensed frequency band.
  • Unit or physical layer signaling is
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium).
  • RRC Radio Resource Control
  • MAC CE media access control unit
  • Access Control Element or physical layer signaling, or radio resource control signaling, media access control carrying a preset (ie, varying) first region length and a preset (ie, varying) first starting location
  • the unit or the physical layer signaling by transmitting the foregoing indication information to the terminal by using the licensed frequency band or the unlicensed frequency band, enables the terminal to receive the downlink control channel in time and accurately, and finally realizes accurately acquiring the control signal carried on the downlink control channel. In order to realize the control of the terminal with the device having the function of the base station.
  • the method further includes: the indication information includes: physical layer signaling to be sent through the licensed frequency band, or a second area length of the second control area on the licensed frequency band and the length of the first area Corresponding relationship, the corresponding relationship between the second starting location and the first starting location, and the process of sending the indication information to the terminal serving the device with the function of the base station, specifically, the method includes: using the licensed frequency band to the terminal Transmitting the physical layer signaling, so that the terminal acquires the first area length and the first starting position by using the physical layer signaling, or sends the second area length to the terminal by using a licensed frequency band a correspondence relationship with the length of the first region, a correspondence between the second starting position and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band.
  • the terminal can directly make the physical layer signaling Obtaining a first region length and a first starting position of the first control region, or according to a correspondence between a length of the second region in the frame structure on the licensed frequency band and a length of the first region, a second starting position, and a first starting position
  • Corresponding relationship deduces the length of the first area and the first starting position of the first control area on the CCA subframe, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain accurate control of the bearer on the downlink control channel.
  • the terminal corresponds to the length of the first region according to the length of the second region.
  • the relationship deducing that the first control region on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and clarifying that the starting position of the first control region is the first OFDM symbol after the CCA;
  • the indication information sent by the base station through the licensed frequency band may further include a second area length and a second start position of the second control area, or the terminal itself detects the second area length and the second start position of the second control area.
  • the method further includes: the indication information includes: a reserved signal,
  • the reservation signal includes a first sequence value for indicating the length of the first region and a second sequence value for indicating the first start location, and the device to the base station function
  • the process of the service terminal transmitting the indication information includes: sending the reservation signal to the terminal when the channel idle detection subframe detects that the downlink channel is idle, so that the terminal is configured according to the reserved signal. And obtaining a first sequence value for indicating the length of the first region and a second sequence value for indicating the first region, and acquiring the first region length and the first starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating a length of the first region and a second sequence value for indicating the first start location, by sending the reservation to the terminal.
  • a receiving signal configured to enable the terminal to acquire the first region length and the first region according to the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The starting position, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the device-to-terminal control with the function of the base station, and of course, those skilled in the art should Knowing that the reserved signal has a multi-bit sequence, and the sequence corresponding to the first sequence value and the second sequence value may be one or a plurality of bits in the multi-bit sequence, and the first sequence value and the second sequence value correspond to The sequence can also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • the method further includes: the indicating method is adapted to indicate a control area on a channel idle detection subframe on an unlicensed frequency band.
  • the indication method is adapted to indicate a control region on a channel idle detection subframe on an unlicensed band.
  • Another aspect of the present invention provides an indication system for a control region on a channel idle detection subframe, for a device having a base station function, including: a sending unit, configured to send indication information to a terminal serving the device having the base station function The indication unit, the terminal is instructed to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information, where the parameter information includes: the first area of the first control area a length and a first starting position of the first control region.
  • the terminal obtains the first control by sending the indication information to the terminal serving the device with the function of the base station, and instructing the terminal to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information.
  • the length of the area and the first starting position so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the control of the terminal with the function of the base station, and of course
  • the terminal may be located in a small cell where the device having the function of the base station is located, or may be located in a neighboring small cell adjacent to the small cell where the device having the function of the base station is located, as long as it is a terminal served by the device having the function of the base station, and
  • the device having the function of the base station includes a base station, a micro cell base station implemented by a communication device (such as a smart phone, etc.), and the like.
  • the indication information further includes: radio resource control signaling, media access control unit, or physical layer signaling that carries a fixed first area length and a fixed first start position.
  • the sending unit is specifically configured to: use the licensed frequency band or The unlicensed frequency band sends the radio resource control signaling, the medium access control unit or the physical layer signaling carrying the fixed first area length and the fixed first starting position to the terminal, or by using a licensed frequency band or non-authorized The frequency band sends, to the terminal, the radio resource control signaling, the medium access control unit, or the physical layer signaling that carries the preset first area length and the preset first starting position.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium). Access Control Control Element) Or physical layer signaling, or radio resource control signaling, media access control unit or physical layer carrying a preset (ie, varying) first region length and a preset (ie, varying) first starting location
  • RRC Radio Resource Control
  • MAC CE Medium
  • the terminal can enable the terminal to receive the downlink control channel in time and accurately, and finally realize the accurate acquisition of the control signaling carried on the downlink control channel, thereby implementing Device-to-terminal control of base station functions.
  • the method further includes: the indication information includes: physical layer signaling to be sent through the licensed frequency band, or a second area length of the second control area on the licensed frequency band and the length of the first area Corresponding relationship, corresponding relationship between the second starting location and the first starting location, and the sending unit is specifically configured to send the physical layer signaling to the terminal by using a licensed frequency band, so that the terminal passes
  • the physical layer signaling acquires the length of the first area and the first starting position, or sends a correspondence between the length of the second area and the length of the first area to the terminal by using a licensed frequency band, where the Corresponding relationship between the two starting positions and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band.
  • the terminal can directly make the physical layer signaling Obtaining a first region length and a first starting position of the first control region, or according to a correspondence between a length of the second region in the frame structure on the licensed frequency band and a length of the first region, a second starting position, and a first starting position
  • Corresponding relationship deduces the length of the first area and the first starting position of the first control area on the CCA subframe, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain accurate control of the bearer on the downlink control channel.
  • the first control area on the unlicensed spectrum is pre-defined to be one-third of the size of the second control area on the licensed frequency band used by the Pcell (Primary-Cell primary cell), and the first control area starts from The start position is the first OFDM symbol after the CCA symbol, and when the size of the second control region on the licensed band used by the Pcell is 3 OFDM symbols, the terminal corresponds to the length of the first region according to the length of the second region.
  • the relationship deduces that the first control region on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and at the same time, clear the first The starting position of the control region is the first OFDM symbol after the CCA.
  • the method further includes: the indication information includes: a reserved signal, wherein the reserved signal includes a first sequence value for indicating a length of the first region and a a second sequence value of the first start position, and the sending unit is specifically configured to: when the channel idle detection subframe detects a downlink channel idle, send the reserved signal to the terminal, so that the Determining, by the terminal, the first sequence length and the first sequence according to a first sequence value indicating a length of the first region and a second sequence value indicating the first start location in the reserved signal. A starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating a length of the first region and a second sequence value for indicating the first start location, by sending the reservation to the terminal.
  • a receiving signal configured to enable the terminal to acquire the first region length and the first region according to the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The starting position, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the device-to-terminal control with the function of the base station, and of course, those skilled in the art should Knowing that the reserved signal has a multi-bit sequence, and the sequence corresponding to the first sequence value and the second sequence value may be one or a plurality of bits in the multi-bit sequence, and the first sequence value and the second sequence value correspond to The sequence can also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • the method further includes: the indication system is adapted to indicate a control area on a channel idle detection subframe on an unlicensed frequency band.
  • the indication system is adapted to indicate the control region on the channel idle detection subframe on the unlicensed band.
  • a further aspect of the present invention provides a method for acquiring a control region on a channel idle detection subframe, which is used for a terminal, including: receiving indication information sent from a device having a base station function; and acquiring the indication from the indication information
  • the parameter information of the first control area on the channel idle detection subframe is configured to acquire the downlink control channel according to the parameter information, where the parameter information includes: a length of the first area of the first control area, and the first The first starting position of the control area.
  • the parameter information of the first control area on the channel idle detection subframe may be obtained from the indication information, thereby acquiring the length of the first control area and the first a starting position for timely and accurately receiving the downlink control channel, and acquiring control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with the base station function.
  • the terminal can be located in the device with the base station function.
  • the small cell may also be located in a neighboring small cell adjacent to the small cell where the device having the base station function is located, as long as it is located within the coverage of the device having the function of the base station.
  • the method further includes: the process of receiving the indication information sent by the device with the function of the base station, specifically, comprising: receiving, by the device with the function of the base station, the length of the first region carrying the fixed Radio resource control signaling, media access control unit or physical layer signaling of the fixed first starting location, or receiving the first region length and preset first and second presets sent by the device with the base station function a process of acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, specifically including the radio resource control signaling, the medium access control unit, or the physical layer signaling Obtaining the first area length and the first one directly from the radio resource control signaling, the medium access control unit, or the physical layer signaling that carries the fixed first area length and the fixed first starting position a start position, or a radio resource control signaling, media access control from the preset first region length and a preset first start location Mono- or physical layer signaling in a first region of the direct access to the first start position and length.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first area length and a fixed first starting position, Medium access control control unit (MAC CE) or physical layer signaling, or carrying a preset (ie, varying) first area length and a preset (ie, varying) first starting position
  • RRC Radio Resource Control
  • MAC CE Medium access control control unit
  • the radio resource control signaling, the medium access control unit, or the physical layer signaling, and receiving the foregoing indication information by using the licensed frequency band or the unlicensed frequency band enables the terminal to receive the downlink control channel in time and accurately, and finally obtains the downlink accurately. Control signaling carried on the control channel, thereby implementing device-to-terminal control with base station functions.
  • the method further includes: receiving, by the device having the function of the base station, the process of transmitting the indication information, where the device includes: Obtaining, by the physical layer signaling, the length of the first area and the first starting position, or receiving a length of a second area of a second control area on a licensed frequency band that is sent by the device with a base station function by using a licensed frequency band Corresponding relationship between the length of the first area, the second starting position, and the first starting position; the parameter for obtaining the first control area on the channel idle detecting subframe from the indication information
  • the process of the information further includes: directly acquiring the length of the first area and the first starting position from the physical layer signaling, or according to the length of the second area on the licensed frequency band and the first Corresponding relationship between the length of the region, the correspondence between the second starting location and the first starting location, obtaining the length of the first region and the first starting bit .
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band. a second region length and a second starting position of the second control region, and a correspondence between the length of the second region and the length of the first region, a correspondence between the second starting position and the first starting position, and receiving the indication by the licensed frequency band.
  • the information may be obtained by the terminal directly acquiring the first region length and the first starting position of the first control region from the physical layer signaling, or according to the second region length and the second control region in the frame structure on the licensed frequency band.
  • the first control area on the unlicensed spectrum is predefined
  • the size is one third of the size of the second control region on the licensed band used by the Pcell (Primary-Cell primary cell), and the starting position of the first control region is the first OFDM symbol after the CCA symbol
  • Pcell Primary-Cell primary cell
  • the starting position of the first control region is the first OFDM symbol after the CCA symbol
  • Pcell The size of the second control region on the licensed band used is 3 OFDM symbols
  • the terminal estimates the first control region on the CCA subframe on the unlicensed spectrum according to the correspondence between the length of the second region and the length of the first region. It is 1 OFDM symbol, and it is clear that the starting position of the first control region is the first OFDM symbol after the CCA.
  • the method further includes: the process of receiving the indication information sent by the device with the function of the base station, specifically: receiving the reserved signal sent by the device with the function of the base station; The process of obtaining the parameter information of the first control area on the channel idle detection subframe in the indication information, specifically, including: according to the first sequence value used to indicate the length of the first area in the reserved signal And acquiring the first region length and the first starting position at a second sequence value indicating the first starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating the length of the first region and a second sequence value for indicating the first start location, by receiving the reservation.
  • a receiving signal configured to enable the terminal to obtain the first region length and the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The first starting location, so that the terminal can receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel, and implements the device-to-terminal control with the function of the base station.
  • the sequence corresponding to the first sequence value and the second sequence value may be one or a few bits of the multi-bit sequence, and the first sequence value and the second sequence value
  • the corresponding sequence may also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information.
  • the indication information of the location is sent to the terminal, so that the terminal determines the length of the first area and the first starting position by using the time-frequency position.
  • a further aspect of the present invention provides a system for acquiring a control region on a channel idle detection subframe, which is used for a terminal, comprising: a receiving unit, receiving indication information sent by a device having a base station function; and an acquiring unit, And obtaining, by the indication information, the parameter information of the first control area on the channel idle detection subframe, to obtain the downlink control channel according to the parameter information, where the parameter information includes: the first area of the first control area a length and a first starting position of the first control region.
  • the parameter information of the first control area on the channel idle detection subframe may be obtained from the indication information, thereby acquiring the length of the first control area and the first a starting position for timely and accurately receiving the downlink control channel, and acquiring control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with the base station function.
  • the terminal can be located in the device with the base station function.
  • the small cell may also be located in a neighboring small cell adjacent to the small cell where the device having the base station function is located, as long as it is located within the coverage of the device having the function of the base station.
  • the receiving unit is further configured to: receive the radio resource control message that is sent by the device with the function of the base station and that carries the fixed first area length and the fixed first start position.
  • a media access control unit or physical layer signaling, or a radio resource control signaling and a media connection carried by the device having the function of the base station and carrying a preset first area length and a preset first starting position The control unit or the physical layer signaling is used to: the radio resource control signaling, the medium access control unit or the physical layer from the first first location that carries the fixed first region length and the fixed first start location Directly acquiring the first area length and the first starting position in the signaling, or from the radio resource control signaling and media access carrying the preset first area length and the preset first starting position The first area length and the first starting position are directly obtained in the control unit or physical layer signaling.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium). Access Control Control Element) or physical layer signaling, or carrying a preset (ie varying) first area length and preset (ie The RRC radio resource control signaling, the medium access control unit, or the physical layer signaling of the first starting location, and receiving the foregoing indication information by using the licensed frequency band or the unlicensed frequency band, enables the terminal to receive the downlink control channel in time and accurately. And finally, accurately obtaining control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with the function of the base station.
  • RRC Radio Resource Control
  • the receiving unit is further configured to: receive physical layer signaling that is sent by the device with the function of the base station by using a licensed frequency band, to obtain the foregoing by using the physical layer signaling. a region length and the first starting position, or a correspondence between a length of a second region of a second control region on a licensed frequency band transmitted by the device having the base station function and a licensed frequency band, and a length of the first region, Corresponding relationship between the first starting position and the first starting position; the acquiring unit is specifically configured to: directly acquire the first area length and the first starting position from the physical layer signaling, or according to the Corresponding relationship between the length of the second region on the licensed frequency band and the length of the first region, and the correspondence between the second starting location and the first starting location, obtaining the length of the first region and the first A starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band. a second region length and a second starting position of the second control region, and a correspondence between the length of the second region and the length of the first region, a correspondence between the second starting position and the first starting position, and receiving the indication by the licensed frequency band.
  • the information may be obtained by the terminal directly acquiring the first region length and the first starting position of the first control region from the physical layer signaling, or according to the second region length and the second control region in the frame structure on the licensed frequency band.
  • the size of the first control area on the unlicensed spectrum is pre-defined to be one-third of the size of the second control area on the licensed frequency band used by the Pcell (Primary-Cell primary cell), and the first control area starts from The start position is the first OFDM symbol after the CCA symbol, and when the size of the second control region on the licensed band used by the Pcell is 3 OFDM symbols, the terminal according to the length of the second region and the length of the first region Deductive
  • the first control region on the CCA subframe on the licensed spectrum is 1 OFDM symbol, and it is clear that the starting position of the first control region is the first OFDM symbol after the CCA.
  • the method further includes: the receiving unit is specifically configured to receive the reserved signal sent by the device with the function of the base station; the acquiring unit is specifically configured to use according to the reserved signal And indicating a first sequence value of the first region length and a second sequence value indicating the first start location, and acquiring the first region length and the first starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating the length of the first region and a second sequence value for indicating the first start location, by receiving the reservation.
  • a receiving signal configured to enable the terminal to obtain the first region length and the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The first starting location, so that the terminal can receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel, and implements the device-to-terminal control with the function of the base station.
  • the sequence corresponding to the first sequence value and the second sequence value may be one or a few bits of the multi-bit sequence, and the first sequence value and the second sequence value
  • the corresponding sequence may also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • Another aspect of the present invention provides a device having a base station function, including: a communication bus, a transceiver, a memory, and a processor, wherein:
  • the communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;
  • the memory stores a set of program codes, and the processor calls the program code stored in the memory to perform the following operations:
  • Controlling by the transceiver device, sending indication information to a terminal that is served by the device having the function of the base station;
  • the indication information includes: radio resource control signaling, media access control unit or physical layer signaling carrying a fixed first area length and a fixed first starting position, or
  • the step of the processor controlling the sending and receiving device to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transceiver device Controlling, by the licensed frequency band or the unlicensed frequency band, the transceiver device to send, to the terminal, the radio resource control signaling, the medium access control unit, or the physical layer signaling carrying the fixed first region length and the fixed first starting location Order, or
  • the transceiver device Controlling, by the licensed frequency band or the unlicensed frequency band, the transceiver device to send, to the terminal, the radio resource control signaling, the medium access control unit, or the physics carrying the preset first region length and the preset first starting location Layer signaling.
  • the indication information includes: physical layer signaling to be sent through a licensed frequency band, or
  • the step of the processor controlling the sending and receiving device to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transceiver device controlling, by the authorized frequency band, the transceiver device to send, to the terminal, a correspondence between a length of the second region and a length of the first region, and a corresponding relationship between the second starting position and the first starting position.
  • the indication information includes: a reserved signal, where the reserved signal includes a first sequence value for indicating a length of the first region and is used to indicate the first The second sequence value of the starting position, and
  • the step of the processor controlling the sending and receiving device to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transceiver is controlled to send the reservation signal to the terminal, so that the terminal is used to indicate the first part according to the reserved signal.
  • a first sequence value of a region length and a second sequence value for indicating the first start location, the first region length and the first start position are obtained.
  • the device is adapted to indicate a control region on a channel idle detection subframe on an unlicensed frequency band.
  • the terminal can clear the start position and length of the control region on the CCA subframe, and the time is accurate.
  • the downlink control channel is received, and the control signaling carried on the downlink control channel is accurately obtained.
  • a terminal includes: a communication bus, a transceiver, a memory, and a processor, wherein:
  • the communication bus is configured to implement connection communication between the transceiver device, the memory, and the processor;
  • the memory stores a set of program codes, and the processor calls the program code stored in the memory to perform the following operations:
  • the step of the processor controlling the transceiver to receive the indication information sent by the device having the function of the base station specifically includes:
  • Radio resource control signaling by the transceiver device, the radio resource control signaling, the medium access control unit, or the physical layer signaling, which is sent by the device with the function of the base station, carrying the fixed first area length and the fixed first starting position, or receiving The radio resource control signaling, the medium access control unit, or the physical layer signaling carried by the device with the function of the base station, carrying the preset first area length and the preset first starting position;
  • the step of the processor acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, and acquiring the downlink control channel according to the parameter information specifically includes:
  • the step of the processor controlling the transceiver to receive the indication information sent by the device having the function of the base station specifically includes:
  • the obtaining unit is specifically configured to:
  • the step of the processor controlling the transceiver to receive the indication information sent by the device having the function of the base station specifically includes:
  • the step of the processor acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, and acquiring the downlink control channel according to the parameter information specifically includes:
  • the terminal can clear the start position and length of the control region on the CCA subframe, and accurately receive the downlink control in time.
  • the channel, and thus the control signaling carried on the downlink control channel, is accurately obtained.
  • a further aspect of the present invention provides a communication system, comprising: a device having a base station function according to the above technical solution, and a terminal according to the above technical solution, wherein the terminal and the device having the base station function pass wireless Signal connection.
  • the communication system consisting of the device having the base station function and the terminal according to the above technical solution, as described in the above technical solution, can enable the terminal to clarify the start of the control region on the CCA subframe.
  • the location and the length, and the downlink control channel are accurately received in time, thereby accurately acquiring the control signaling carried on the downlink control channel.
  • the terminal can clear the starting position and length of the control region on the CCA subframe, and accurately receive the downlink control channel, and accurately acquire the control signaling carried on the downlink control channel.
  • Figure 1 shows a schematic diagram of the operation of mobile communication over an unlicensed spectrum
  • FIG. 2 shows a start position of a control region on a channel idle detection subframe of one embodiment of the related art
  • FIG. 3 illustrates a control region on a channel idle detection subframe according to an embodiment of the present invention. Schematic diagram of the indication method
  • FIG. 4 is a schematic structural diagram of an indication system of a control region on a channel idle detection subframe according to an embodiment of the present invention
  • FIG. 5 is a block diagram showing the structure of a device having a base station function according to an embodiment of the present invention
  • FIG. 6 is a flow chart showing a method for acquiring a control region on a channel idle detection subframe according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of an acquisition system of a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • FIG. 8 is a block diagram showing the structure of a terminal according to an embodiment of the present invention.
  • FIG. 9 is a block diagram showing the structure of a communication system according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram showing an indication principle of a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing an indication principle of a control region on a channel idle detection subframe according to another embodiment of the present invention.
  • FIG. 12 is a diagram showing the principle of indicating a control region on a channel idle detection subframe according to still another embodiment of the present invention.
  • Figure 13 shows a block diagram of a device in accordance with one embodiment of the present invention.
  • FIG. 14 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • FIG. 3 is a flow chart showing a method of indicating a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • a method for indicating a control area on a channel idle detection subframe includes: Step 302: Send indication information to a terminal that is served by a device having a base station function;
  • the parameter information of the first control area on the channel idle detection subframe is obtained by the terminal from the indication information, where the parameter information includes: a length of a first area of the first control area, and a first starting position of the first control region.
  • the terminal obtains the first control by sending the indication information to the terminal serving the device with the function of the base station, and instructing the terminal to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information.
  • the length of the area and the first starting position so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the control of the terminal with the function of the base station, and of course
  • the terminal may be located in a small cell where the device having the function of the base station is located, or may be located in a neighboring small cell adjacent to the small cell where the device having the function of the base station is located, as long as it is a terminal served by the device having the function of the base station, and
  • the device having the function of the base station includes a base station, a micro cell base station implemented by a communication device (such as a smart phone, etc.), and the like.
  • the indication information further includes: radio resource control signaling, media access control unit, or physical layer signaling that carries a fixed first area length and a fixed first start position. Or carrying radio resource control signaling, media access control unit or physical layer signaling with a preset first region length and a preset first starting location, and the serving to the device having the base station function
  • the process of sending the indication information by the terminal specifically includes: sending, by using the licensed frequency band or the unlicensed frequency band, the radio resource control signaling and the medium access control carrying the fixed first area length and the fixed first starting position to the terminal Transmitting the radio resource control signaling and the medium access control carrying the preset first area length and the preset first starting position to the terminal by using the authorized frequency band or the unlicensed frequency band.
  • Unit or physical layer signaling is
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium). Access Control Control Element) or physical layer signaling, or carrying a preset (ie varying) first area length and preset (ie The RRC radio resource control signaling, the medium access control unit, or the physical layer signaling of the first start location, and the terminal can be received in time and accurately by transmitting the indication information to the terminal using the licensed frequency band or the unlicensed frequency band.
  • Downlink control channel and finally achieve accurate acquisition of control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with base station function.
  • the method further includes: the indication information includes: physical layer signaling to be sent through the licensed frequency band, or a correspondence between a length of the second area on the licensed frequency band and the length of the first area, And the process of sending the indication information to the terminal serving the device with the function of the base station, and the sending, by the authorized frequency band, the sending the Physical layer signaling, so that the terminal acquires the length of the first area and the first starting position by using the physical layer signaling, or sends the length of the second area to the terminal by using a licensed frequency band Corresponding relationship between the length of the first region, the correspondence between the second starting position and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the length of the second area on the licensed frequency band, which is to be sent through the licensed frequency band. Corresponding relationship between the length of the area, the relationship between the second starting position and the first starting position, and sending the indication information to the terminal through the authorized frequency band, so that the terminal can directly obtain the first control from the physical layer signaling.
  • Determining the first region length and the first starting position of the region, or according to the correspondence between the length of the second region in the frame structure on the licensed band and the length of the first region, and the correspondence between the second starting position and the first starting position The first area length and the first start position of the first control area on the CCA subframe, so that the terminal can receive the downlink control channel in time and accurately, and finally accurately obtain the control signaling carried on the downlink control channel, thereby implementing Device-to-terminal control with base station functionality.
  • the size of the first control area on the unlicensed spectrum is pre-defined to be one-third of the size of the second control area on the licensed frequency band used by the Pcell (Primary-Cell primary cell), and the first control area starts from The start position is the first OFDM symbol after the CCA symbol, and when the size of the second control region on the licensed band used by the Pcell is 3 OFDM symbols, the terminal corresponds to the length of the first region according to the length of the second region.
  • the relationship deducing that the first control region on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and clarifying that the starting position of the first control region is the first OFDM symbol after the CCA;
  • the indication information sent by the base station through the licensed frequency band may further include a second area length and a second start position of the second control area, or the terminal itself detects the second area length and the second start position of the second control area.
  • the method further includes: the indication information includes: a reserved signal, wherein the reserved signal includes a first sequence value for indicating a length of the first region and a And the process of sending the indication information to the terminal serving the device with the function of the base station, where the method includes: when the channel idle detection subframe detects that the downlink channel is idle, Sending, by the terminal, the reservation signal, so that the terminal, according to the first sequence value for indicating the length of the first area and the second part for indicating the first start position, according to the reserved signal a sequence value, the first region length and the first starting position are obtained.
  • the indication information may further include a reservation signal including a first sequence value for indicating a length of the first region and a second sequence value for indicating the first start location, by sending the reservation to the terminal.
  • a receiving signal configured to enable the terminal to acquire the first region length and the first region according to the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The starting position, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the device-to-terminal control with the function of the base station, and of course, those skilled in the art should Knowing that the reserved signal has a multi-bit sequence, and the sequence corresponding to the first sequence value and the second sequence value may be one or a plurality of bits in the multi-bit sequence, and the first sequence value and the second sequence value correspond to The sequence can also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. Transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines, by using the time-frequency position, the a zone length and the first starting position.
  • the method further includes: the indicating method is adapted to indicate a control area on a channel idle detection subframe on an unlicensed frequency band.
  • the indication method is applicable to indicate the control region on the channel idle detection subframe on the unlicensed band.
  • FIG. 4 is a block diagram showing the structure of an indication system of a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • an indication system 400 for a control region on a channel idle detection subframe includes: a transmitting unit 402, which sends indication information to a terminal served by the device having a base station function.
  • the indicating unit 404, the terminal is instructed to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information, where the parameter information includes: the first part of the first control area a length of the region and a first starting position of the first control region.
  • the terminal obtains the first control by sending the indication information to the terminal serving the device with the function of the base station, and instructing the terminal to obtain the parameter information of the first control area on the channel idle detection subframe from the indication information.
  • the length of the area and the first starting position so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the control of the terminal with the function of the base station, and of course
  • the terminal may be located in a small cell where the device having the function of the base station is located, or may be located in a neighboring small cell adjacent to the small cell where the device having the function of the base station is located, as long as it is a terminal served by the device having the function of the base station, and
  • the device having the function of the base station includes a base station, a micro cell base station implemented by a communication device (such as a smart phone, etc.), and the like.
  • the indication information further includes: radio resource control signaling, media access control unit, or physical layer signaling that carries a fixed first area length and a fixed first start position.
  • the sending unit 402 is specifically configured to: pass the licensed frequency band Transmitting, by the unlicensed frequency band, the radio resource control signaling and the medium carrying the fixed first region length and the fixed first starting location to the terminal Transmitting the control unit or the physical layer signaling, or transmitting, by using the licensed band or the unlicensed band, the radio resource control signaling carrying the preset first region length and the preset first starting location, Media access control unit or physical layer signaling.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium).
  • RRC Radio Resource Control
  • MAC CE media access control unit
  • Access Control Element or physical layer signaling, or radio resource control signaling, media access control carrying a preset (ie, varying) first region length and a preset (ie, varying) first starting location
  • the unit or the physical layer signaling by transmitting the foregoing indication information to the terminal by using the licensed frequency band or the unlicensed frequency band, enables the terminal to receive the downlink control channel in time and accurately, and finally realizes accurately acquiring the control signal carried on the downlink control channel. In order to realize the control of the terminal with the device having the function of the base station.
  • the method further includes: the indication information includes: physical layer signaling to be sent through the licensed frequency band, or a second area length of the second control area on the licensed frequency band and the length of the first area Corresponding relationship, the corresponding relationship between the second starting location and the first starting location, and the sending unit 402 is specifically configured to: send the physical layer signaling to the terminal by using a licensed frequency band, so as to enable Obtaining, by the physical layer signaling, the first region length and the first starting location, or the correspondence between the length of the second region and the length of the first region by using the licensed frequency band Corresponding relationship between the second starting position and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band.
  • the terminal can directly make the physical layer signaling Obtaining a first region length and a first starting position of the first control region, or according to a correspondence between a length of the second region in the frame structure on the licensed frequency band and a length of the first region, a second starting position, and a first starting position
  • Corresponding relationship deduces the length of the first area and the first starting position of the first control area on the CCA subframe, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain accurate control of the bearer on the downlink control channel.
  • the terminal According to the correspondence between the length of the second area and the length of the first area, it is estimated that the first control area on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and the starting position of the first control area is CCA.
  • the first OFDM symbols afterwards;
  • the indication information sent by the base station through the licensed frequency band may further include a second area length and a second start position of the second control area, or the terminal itself detects the second area length and the second start position of the second control area.
  • the method further includes: the indication information includes: a reserved signal, wherein the reserved signal includes a first sequence value for indicating a length of the first region and a a second sequence value of the first start position, and the sending unit 402 is specifically configured to: when the channel idle detection subframe detects that the downlink channel is idle, send the reserved signal to the terminal, so that the The terminal acquires the first region length and the first sequence value according to the first sequence value indicating the length of the first region and the second sequence value for indicating the first start location in the reserved signal. First starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating a length of the first region and a second sequence value for indicating the first start location, by sending the reservation to the terminal.
  • a receiving signal configured to enable the terminal to acquire the first region length and the first region according to the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The starting position, so that the terminal can receive the downlink control channel in time and accurately, and finally obtain the control signaling carried on the downlink control channel accurately, thereby implementing the device-to-terminal control with the function of the base station, and of course, those skilled in the art should Knowing that the reserved signal has a multi-bit sequence, and the sequence corresponding to the first sequence value and the second sequence value may be one or a plurality of bits in the multi-bit sequence, and the first sequence value and the second sequence value correspond to The sequence can also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence.
  • the terminal may calculate the first region length and the first starting position according to the first sequence value and the second sequence value, and of course, the sequence values on the sixth and seventh sequences may also be used to represent the first sequence value.
  • the second sequence value is represented by the sequence values on the 8th and 9th sequences;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • the method further includes: the indication system is adapted to indicate a control area on a channel idle detection subframe on an unlicensed frequency band.
  • the indication system is adapted to indicate the control region on the channel idle detection subframe on the unlicensed band.
  • FIG. 5 shows a schematic structural diagram of a device having a base station function according to an embodiment of the present invention.
  • a device 500 having a base station function comprising: an indication system 400 for a control region on a channel idle detection subframe according to any one of the above aspects.
  • the terminal can make the start position and length of the control region on the CCA subframe clear.
  • the downlink control channel is received in time and accurately, and the control signaling carried on the downlink control channel is accurately obtained.
  • FIG. 6 is a flow chart showing a method of acquiring a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • a method for acquiring a control region on a channel idle detection subframe includes: Step 602: Receive indication information sent by a device having a base station function; Step 604: Obtaining, by the indication information, the parameter information of the first control area on the channel idle detection subframe, to obtain the downlink control channel according to the parameter information, where the parameter information includes: the first control area a region length and the first control The first starting position of the zone.
  • the parameter information of the first control area on the channel idle detection subframe may be obtained from the indication information, thereby acquiring the length of the first control area and the first a starting position for timely and accurately receiving the downlink control channel, and acquiring control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with the base station function.
  • the terminal can be located in the device with the base station function.
  • the small cell may also be located in a neighboring small cell adjacent to the small cell where the device having the base station function is located, as long as it is located within the coverage of the device having the function of the base station.
  • the method further includes: the process of receiving the indication information sent by the device with the function of the base station, specifically, comprising: receiving, by the device with the function of the base station, the length of the first region carrying the fixed Radio resource control signaling, media access control unit or physical layer signaling of the fixed first starting location, or receiving the first region length and preset first and second presets sent by the device with the base station function a process of acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, specifically including the radio resource control signaling, the medium access control unit, or the physical layer signaling Obtaining the first area length and the first one directly from the radio resource control signaling, the medium access control unit, or the physical layer signaling that carries the fixed first area length and the fixed first starting position a start position, or a radio resource control signaling, media access control from the preset first region length and a preset first start location Mono- or physical layer signaling in a first region of the direct access to the first start position and length.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium).
  • RRC Radio Resource Control
  • MAC CE media access control unit
  • Access Control Element or physical layer signaling, or radio resource control signaling, media access control carrying a preset (ie, varying) first region length and a preset (ie, varying) first starting location
  • the unit or the physical layer signaling, and receiving the foregoing indication information by using the licensed band or the unlicensed band enables the terminal to receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel accurately, and further Realize the control of the terminal by the device with the function of the base station.
  • the method further includes: the receiving is from a function having a base station
  • the process of the indication information sent by the device includes: receiving the physical layer signaling sent by the device with the function of the base station through the authorized frequency band, to obtain the length of the first area and the first start by using the physical layer signaling a position, or a correspondence between a length of a second area of a second control area on a licensed frequency band that is sent by the device having the base station function and a length of the first area, a second start position, and the first a process of obtaining the parameter information of the first control area on the channel idle detection subframe from the indication information, and specifically, the method further: acquiring the a first area length and the first starting position, or a correspondence between a length of the second area on the licensed frequency band and a length of the first area, the second starting position, and the first starting position Corresponding relationship acquires the first region length and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band. a second region length and a second starting position of the second control region, and a correspondence between the length of the second region and the length of the first region, a correspondence between the second starting position and the first starting position, and receiving the indication by the licensed frequency band.
  • the information may be obtained by the terminal directly acquiring the first region length and the first starting position of the first control region from the physical layer signaling, or according to the second region length and the second control region in the frame structure on the licensed frequency band.
  • the size of the first control area on the unlicensed spectrum is pre-defined to be one-third of the size of the second control area on the licensed frequency band used by the Pcell (Primary-Cell primary cell), and the first control area starts from The start position is the first OFDM symbol after the CCA symbol, and when the size of the second control region on the licensed band used by the Pcell is 3 OFDM symbols, the terminal according to the length of the second region and the length of the first region It is estimated that the first control region on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and it is clear that the starting position of the first control region is the first OFDM symbol after the CCA.
  • the method further includes: the receiving is from a function having a base station
  • the process of the indication information sent by the device includes: receiving a reservation signal sent by the device with the function of the base station; and acquiring parameter information of the first control area on the channel idle detection subframe from the indication information
  • the process includes: acquiring the first area according to a first sequence value for indicating a length of the first area and a second sequence value for indicating the first start position in the reserved signal. Length and the first starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating the length of the first region and a second sequence value for indicating the first start location, by receiving the reservation.
  • a receiving signal configured to enable the terminal to obtain the first region length and the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The first starting location, so that the terminal can receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel, and implements the device-to-terminal control with the function of the base station.
  • the sequence corresponding to the first sequence value and the second sequence value may be one or a few bits of the multi-bit sequence, and the first sequence value and the second sequence value
  • the corresponding sequence may also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • FIG. 7 is a block diagram showing the structure of an acquisition system of a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • an acquisition system 700 for a control region on a channel idle detection subframe includes: a receiving unit 702, which receives indication information sent from a device having a base station function; 704. Obtain the channel idle state from the indication information. Detecting parameter information of the first control area on the subframe to obtain a downlink control channel according to the parameter information, where the parameter information includes: a length of the first area of the first control area, and the first control area The first starting position.
  • the parameter information of the first control area on the channel idle detection subframe may be obtained from the indication information, thereby acquiring the length of the first control area and the first a starting position for timely and accurately receiving the downlink control channel, and acquiring control signaling carried on the downlink control channel, thereby implementing device-to-terminal control with the base station function.
  • the terminal can be located in the device with the base station function.
  • the small cell may also be located in a neighboring small cell adjacent to the small cell where the device having the base station function is located, as long as it is located within the coverage of the device having the function of the base station.
  • the receiving unit 702 is further configured to: receive, by the device with the function of the base station, the radio resource control that carries the fixed first area length and the fixed first start position. Signaling, media access control unit or physical layer signaling, or receiving radio resource control signaling and media carried by the device having the function of the base station and carrying the preset first area length and the preset first starting position Access control unit or physical layer signaling; the obtaining unit 704 is specifically configured to: from the radio resource control signaling carrying the fixed first area length and the fixed first starting position, the media access control unit or Obtaining, in the physical layer signaling, the first area length and the first starting position, or the radio resource control signaling and the media carrying the preset first area length and the preset first starting position The first area length and the first starting position are directly acquired in the access control unit or the physical layer signaling.
  • the indication information may be a radio resource control signaling (ie, RRC, Radio Resource Control) carrying a fixed first region length and a fixed first starting location, and a media access control unit (MAC CE, Medium).
  • RRC Radio Resource Control
  • MAC CE media access control unit
  • Access Control Element or physical layer signaling, or radio resource control signaling, media access control carrying a preset (ie, varying) first region length and a preset (ie, varying) first starting location
  • the unit or the physical layer signaling, and receiving the foregoing indication information by using the licensed band or the unlicensed band enables the terminal to receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel accurately, and further Realize the control of the terminal by the device with the function of the base station.
  • the receiving unit 702 is specifically configured to: Receiving physical layer signaling sent by the device with the function of the base station through the licensed frequency band, to obtain the length of the first area and the first starting position by using the physical layer signaling, or receiving the device with the function of the base station Corresponding relationship between the length of the second region of the second control region and the length of the first region, and the correspondence between the second starting location and the first starting location of the second control region on the authorized frequency band transmitted by the licensed frequency band;
  • the unit 704 is specifically configured to: directly acquire the first area length and the first starting position from the physical layer signaling, or according to the second area length and the first area on the licensed frequency band Corresponding relationship of the length, a correspondence between the second starting position and the first starting position, acquiring the first region length and the first starting position.
  • the indication information may also be physical layer signaling that carries the first area length and the first starting position of the first control area, and the second control area of the licensed frequency band, which is to be sent through the licensed frequency band. a second region length and a second starting position of the second control region, and a correspondence between the length of the second region and the length of the first region, a correspondence between the second starting position and the first starting position, and receiving the indication by the licensed frequency band.
  • the information may be obtained by the terminal directly acquiring the first region length and the first starting position of the first control region from the physical layer signaling, or according to the second region length and the second control region in the frame structure on the licensed frequency band.
  • the size of the first control area on the unlicensed spectrum is pre-defined to be one-third of the size of the second control area on the licensed frequency band used by the Pcell (Primary-Cell primary cell), and the first control area starts from The start position is the first OFDM symbol after the CCA symbol, and when the size of the second control region on the licensed band used by the Pcell is 3 OFDM symbols, the terminal according to the length of the second region and the length of the first region It is estimated that the first control region on the CCA subframe on the unlicensed spectrum is 1 OFDM symbol, and it is clear that the starting position of the first control region is the first OFDM symbol after the CCA.
  • the method further includes: the receiving unit 702 is specifically configured to receive a reserved signal sent by the device with the function of the base station; Obtaining the first region length and the first start according to a first sequence value for indicating a length of the first region and a second sequence value for indicating the first start position in the reserved signal Starting position.
  • the indication information may further include a reservation signal including a first sequence value for indicating the length of the first region and a second sequence value for indicating the first start location, by receiving the reservation.
  • a receiving signal configured to enable the terminal to obtain the first region length and the first sequence value for indicating the length of the first region and the second sequence value for indicating the first starting location in the reserved signal The first starting location, so that the terminal can receive the downlink control channel in time and accurately, and finally obtains the control signaling carried on the downlink control channel, and implements the device-to-terminal control with the function of the base station.
  • the sequence corresponding to the first sequence value and the second sequence value may be one or a few bits of the multi-bit sequence, and the first sequence value and the second sequence value
  • the corresponding sequence may also be any position or any position of the multi-bit sequence.
  • the sequence value on the first sequence may be used to represent the first sequence value, or the sequence value on the 10th sequence may be used to represent the second sequence value, and the terminal is based on the first
  • the sequence value and the second sequence value can be used to derive the first region length and the first start position.
  • the sequence values on the sixth and seventh sequences can also be used to represent the first sequence value, using the eighth and the The sequence values on the nine sequences represent the second sequence value;
  • the method for indicating the length of the first area and the first starting position by using the reserved signal includes, but is not limited to, indicating the terminal by using the sequence value in the reserved signal, for example, the time-frequency position occupied by the reserved signal, etc., as the indication information. And transmitting, to the terminal, the indication information that includes the time-frequency position occupied by the reserved signal, so that the terminal determines the first area length and the first starting position by using the time-frequency position.
  • FIG. 8 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • a terminal 800 of an embodiment of the present invention comprising: an acquisition system 700 for a control region on a channel idle detection subframe according to any one of the above aspects.
  • the terminal 800 by setting the acquisition system 700 of the control region on the channel idle detection subframe on the terminal 800, the terminal 800 can be made clear the starting position and length of the control region on the CCA subframe, and accurately and accurately The downlink control channel is received, and the control signaling carried on the downlink control channel is accurately obtained.
  • Figure 9 is a block diagram showing the structure of a communication system in accordance with one embodiment of the present invention.
  • a communication system 900 includes: a device 500 having a base station function as described in the above technical solution, and a terminal 800 as described in the above technical solution, the terminal 800
  • the device having the base station function 500 is connected by a wireless signal.
  • the terminal 800 can make the control on the CCA subframe clear by the communication system 900 composed of the device 500 having the base station function and the terminal 800 as described in the above technical solution.
  • FIG. 10 is a schematic diagram showing the principle of indication of a control region on a channel idle detection subframe according to an embodiment of the present invention.
  • the device with the function of the base station can send the radio resource control signaling and the media access control carrying the fixed first region length and the fixed first starting location to the terminal through the licensed band or the unlicensed band.
  • Unit or physical layer signaling or transmitting, by using a licensed frequency band or an unlicensed frequency band, a radio resource control signaling, a medium access control unit, or a physical layer carrying a preset first area length and a preset first starting position to the terminal Signaling, so that the terminal acquires the first region length of the first control region and the first start region of the first control region on the CCA subframe from the foregoing indication information, in the indication method, the start position of the control region Is fixed or configurable:
  • the indication information may be a predefined RCC (Radio Resource Control) signaling with a fixed first starting position and a fixed first area length, and a MAC CE (Medium Access Control Element) Or physical layer signaling, or RCC signaling with a variable first starting position and a variable first area length that needs to be temporarily configured each time, MAC CE or physical layer signaling, and the corresponding indication of FIG.
  • the information is the RCC signaling with the fixed first starting position and the fixed first area length
  • the MAC CE is the physical layer signaling.
  • the specific configuration is: the first control area is the CCA subframe (ie, the subframe N+1).
  • the size of the first control region is 2 OFDM symbols
  • the terminal receives the RCC signaling through the licensed band or the unlicensed band, and the MAC CE or the physical layer signaling can learn this.
  • Configuration which in turn can receive the control channel at the corresponding location, of course, RCC signaling, MAC CE or the first region length and the first start bit carried on the physical layer signaling
  • the setting may be fixed or unfixed, that is, the RCC signaling carrying the first area length and the first starting position, MAC CE or the first area length on the physical layer signaling, sent to the terminal each time And the first starting position is randomly configured.
  • FIG. 11 is a schematic diagram showing the principle of indicating a control region on a channel idle detection subframe according to another embodiment of the present invention.
  • the device having the function of the base station can also send the physical layer signaling to the terminal through the licensed frequency band, so that the terminal obtains the length of the first area and the first starting position through the physical layer signaling, or transmits the licensed frequency band to the terminal.
  • the terminal is from the indication information Acquiring the first region length of the first control region and the first starting location of the first control region on the CCA subframe, and the indication method is notified by the device with the base station function in the Pcell:
  • the terminal In the LAA (Licensed Assisted Access) system, the terminal always has the Pcell that grants the spectrum to provide the service, so the Pcell can be notified by the Pcell of the start position and length of the first control area on the CCA subframe.
  • the method may be displayed or implicit.
  • the display method means that the Pcell directly informs the length of the first control area and the first starting position on the unlicensed spectrum through physical layer signaling, and the implicit method is Specifying a certain rule, implicitly indicating the size of the first control area and the first starting position on the unlicensed spectrum of the terminal, for example, predefining the length of the first control area on the unlicensed spectrum is the second control area on the Pcell Half of the length, the first start position of the first control region is the start of the first OFDM symbol after the CCA symbol on the CCA subframe, and the second start position of the second control region on the Pcell is determined by using the licensed band a correspondence between a first starting position of a control region, and a correspondence between a length of the second control region and a length of the first control region to The form of the information to the terminal so that the terminal can obtain the size of the first control region and the first start position;
  • the size of the second control region on the Pcell is 2 OFDM symbols, and the terminal knows the subframe N+1 of the unlicensed spectrum after acquiring the indication information.
  • the length of the first control region on the (ie, CCA subframe) is 1 OFDM symbol, and the starting position of the first control region is the first OFDM symbol after the CCA symbol.
  • FIG. 12 shows a control area on a channel idle detection subframe according to still another embodiment of the present invention. Schematic diagram of the indication principle of the domain.
  • the device having the function of the base station may further send a reservation signal, that is, a reservation signal, to the terminal when the channel idle detection subframe detects that the downlink channel is idle, so that the terminal indicates the first according to the reserved signal. And obtaining a first region length and a first starting position by using a first sequence value of the region length and a second sequence value indicating the first starting location:
  • the device with the function of the base station may send a reservation signal. Therefore, the reservation signal may be implicitly indicated on the unlicensed spectrum.
  • the length of the first control region and the first starting position may be implicitly indicated by different sequences of the reservation signal.
  • the reservation signal is a sequence of length 10
  • the first two bits of the specified sequence are used to indicate the length of the first control region, that is, the sequence value of the first two sequences of the 10-bit sequence is the first sequence value, and the last 8 bits are used for the first start position of the first control region.
  • the sequence value of the last octet sequence of the 10-bit sequence is the second sequence value, and the definition is sent to the terminal in the form of indication information, so that the terminal can implicitly know that the sequence value according to the first two sequences can be obtained.
  • the length of a control region, and the first starting position can be obtained according to the sequence value of the last 8-bit sequence, as shown in FIG. 12, in FIG. 12, when the sequence value of the current two-bit sequence is 00, the terminal according to the indication information Knowing that the length of the first control region is 1 OFDM symbol; when the sequence value of the current two-bit sequence is 01, the terminal knows that the length of the first control region is 2 OFDM symbols according to the indication information; When the sequence value of the sequence is 10, the terminal knows that the length of the first control region is 3 OFDM symbols according to the indication information; when the sequence value of the current two-bit sequence is 11, the terminal knows that the length of the first control region is based on the indication information.
  • the terminal when the sequence value of the last 8-bit sequence is 00000000, the terminal knows that the first start position is the first OFDM symbol after the reservation signal according to the indication information, and when the sequence value of the last 8-bit sequence is 00000001 According to the indication information, the terminal knows that the first starting position is the second OFDM symbol after the reservation signal, and so on.
  • the sequence shown in FIG. 12 is merely an example, and the length of the sequence may be different (such as 12 bits, etc.), and the sequence indicating the size of the first control region and the first starting position in the sequence.
  • the location may also be different, for example, when the length of the reservation signal is still 10 sequences, if the first three bits of the sequence are specified in advance to indicate the length of the first control region, that is, the first three sequences of the 10-bit sequence.
  • the sequence value is the first sequence value, and the second bit after the reciprocal is used for the first start position of the first control region, that is, the sequence of the last two digits of the 10-bit sequence is the second sequence value, and the definition is indicated by the information.
  • the form is sent to the terminal.
  • Figure 13 shows a block diagram of a device in accordance with an embodiment of the present invention.
  • the apparatus may include at least one transceiver 503, at least one processor 501, such as a CPU, a memory 504, and at least one communication bus 502.
  • the communication bus 502 is configured to connect the transceiver 503, the processor 501, and the memory 504.
  • the above memory 504 may be a high speed RAM memory or a non-volatile memory such as a disk memory.
  • the memory 504 is further configured to store a set of program codes, and the transceiver 503 and the processor 501 are configured to call the program code stored in the memory 504, and perform the following operations:
  • Controlling by the transceiver device, sending indication information to a terminal that is served by the device having the function of the base station;
  • the indication information includes: radio resource control signaling, media access control unit or physical layer signaling carrying a fixed first area length and a fixed first starting position, or
  • the step of the processor 501 for controlling the sending and receiving device 503 to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transceiver device 503 Controlling, by the licensed frequency band or the unlicensed frequency band, the transceiver device 503 to send, to the terminal, the radio resource control signaling, the medium access control unit, or the physical layer that carries the fixed first region length and the fixed first starting location. Signaling, or
  • the transceiver device 503 Controlling, by the authorized frequency band or the unlicensed frequency band, the transceiver device 503 to send, to the terminal, the radio resource control signaling, the medium access control unit, or the preset first start position and the preset first start position, or Physical layer signaling.
  • the indication information includes: physical layer signaling to be sent through a licensed frequency band, or
  • the step of the processor 501 for controlling the sending and receiving device 503 to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transmitting and receiving device 503 is configured to transmit, by the authorized frequency band, the corresponding relationship between the length of the second area and the length of the first area, and the correspondence between the second starting position and the first starting position.
  • the indication information includes: a reserved signal, where the reserved signal includes a first sequence value for indicating a length of the first region and is used to indicate the first The second sequence value of the starting position, and
  • the step of the processor 501 for controlling the sending and receiving device 503 to send the indication information to the terminal that is served by the device with the function of the base station includes:
  • the transceiver 503 When the channel idle detection subframe detects that the downlink channel is idle, the transceiver 503 is controlled to send the reservation signal to the terminal, so that the terminal is used to indicate the according to the reserved signal.
  • a first sequence value of a length of the first region and a second sequence value for indicating the first start location acquire the first region length and the first start position.
  • the device is adapted to indicate a control region on a channel idle detection subframe on an unlicensed frequency band.
  • FIG. 14 shows a schematic structural diagram of a terminal according to an embodiment of the present invention.
  • the terminal may include at least one transceiver 603, at least one processor 601, such as a CPU, a memory 604, and at least one communication bus 602.
  • the communication bus 602 is used to connect the transceiver 603, the processor 601, and the memory 604.
  • the above memory 604 may be a high speed RAM memory or a non-volatile memory such as a disk memory.
  • the memory 604 is further configured to store a set of program codes, and the transceiver 603 and the processor 601 are configured to call the program code stored in the memory 604, and perform the following operations:
  • the step of the processor 601 controlling the transceiver 603 to receive the indication information sent by the device having the function of the base station specifically includes:
  • the transceiver device 603 Controlling, by the transceiver device 603, the radio resource control signaling, the medium access control unit, or the physical layer signaling that is sent by the device with the function of the base station and carries the fixed first region length and the fixed first starting location, or Receiving, by the device with the function of the base station, the radio resource control signaling, the medium access control unit, or the physical layer signaling that carries the preset first area length and the preset first starting position;
  • the step of the processor 601 acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, and acquiring the downlink control channel according to the parameter information specifically includes:
  • the processor 601 controls the transceiver 603 to connect
  • the step of receiving the indication information sent by the device with the function of the base station specifically includes:
  • the obtaining unit is specifically configured to:
  • the step of the processor 601 controlling the transceiver 603 to receive the indication information sent by the device having the function of the base station specifically includes:
  • the step of the processor 601 acquiring the parameter information of the first control area on the channel idle detection subframe from the indication information, and acquiring the downlink control channel according to the parameter information specifically includes:
  • the terminal can clarify the starting position and length of the control area on the CCA subframe, and accurately receive the downlink control channel, and accurately acquire the bearer on the downlink control channel. Control signaling.

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Abstract

本发明提出了一种信道空闲检测子帧上的控制区域的指示方法及指示系统、一种信道空闲检测子帧上的控制区域的获取方法及获取系统、一种具有基站功能的设备、一种终端和一种通信系统，其中，信道空闲检测子帧上的控制区域的指示方法包括：向具有基站功能的设备服务的终端发送指示信息；指示终端从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，其中，参数信息包括：第一控制区域的第一区域长度和第一控制区域的第一起始位置。通过本发明的技术方案，可以使终端明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。

Description

指示方法、指示系统、获取方法、获取系统和通信系统
本申请要求于2015年05月25日提交中国专利局、申请号为201510272332.X，发明名称为“指示方法、指示系统、获取方法、获取系统和通信系统”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，具体而言，涉及一种信道空闲检测子帧上的控制区域的指示方法、一种信道空闲检测子帧上的控制区域的指示系统、一种信道空闲检测子帧上的控制区域的获取方法、一种信道空闲检测子帧上的控制区域的获取系统、一种具有基站功能的设备、一种终端和一种通信系统。
背景技术
随着通信业务量的急剧增加，现有的分配给移动业务的无线频谱的容量已经无法满足要求了。在3GPP Rel-13阶段，一种称作LAA(licensed-assisted access，辅助的接入技术)的机制被引入了。在LAA机制中，移动通信的传输可以在非授权频谱上承载，如5GHz的频段。且这些未授权频谱目前主要是Wi-Fi、蓝牙、雷达、医疗等系统在使用。
由于非授权频谱上系统的多样性和复杂性，直接把LTE(Long Term Evolution，长期演进)的机制用于非授权频谱上是无法保证用户的安全性以及连接的稳定性的。因此，在LAA的机制中，通过CCA机制，使用授权频谱来帮助非授权频谱上的接入。目前，在非授权频谱上使用LTE的话，系统可以有两种工作方式，一种是补充下行(SDL，Supplemental Downlink)，即只有下行传输子帧；另一种是TDD(Time Division Duplex，时分双工)模式，既包含下行子帧、上行子帧。补充下行这种情况只能是借助载波聚合技术使用(如图1所示)：
而在现有的LAA系统中，LAA系统在占用非授权信道之前，首先要执行LBT(Listen Before Talk，先听后说)机制。即需要首先做CCA检测以判断信道是否空闲。如果判断信道空闲，LAA系统可以占用信道，如果 判断信道忙，LAA系统需要等待信道空闲后才能占用信道。
目前LBT的机制分为两种，一种是基于帧结构的(FBE，Framed based equipment)的LBT机制，在这种机制下LBT的周期是固定的，CCA(channel clear assessment)的时间是每个周期的最开始。另外一种是基于负载的(LBE，Load based equipment)的LBT机制的，该机制主要原理是在负载到达时，马上进行信道检测，如果检测信道空闲，则马上发送数据业务；如果检测信道忙，则随机选择一个数N，在接下来的信道检测时间内，若检测到信道忙，则N不变，若检测到信道闲，则N-1，当N减为0时，则可以发送数据。
无论是哪种LBE机制，由于检测到信道闲并且可以占用信道的时间可能出现在任何时刻，即没有与LTE的子帧的边界对齐，那么终端无法得知从哪个位置来开始接收CCA上的下行控制信道PCFICH，同时也无法得知控制区域的大小，因而也无法得知PCFICH(Physical Control Format Indicator Channel，物理控制格式指示信道)，PHICH(Physical Hybird ARQ Indicator Channel，物理HARQ指示信道)和PDCCH(Physical Downlink Control Channel，物理下行控制信道)等下行控制信道的起始位置，如下图2所示，进而导致无法接收下行控制信道PCFICH、PHICH和(E)PDCCH上承载的控制信令，以根据该控制信令进行相关操作。
因此，如何使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令，成为亟待解决的问题。
发明内容
本发明正是基于上述问题，提出了一种新的技术方案，使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
有鉴于此，本发明的一方面提出了一种信道空闲检测子帧上的控制区域的指示方法用于具有基站功能的设备，包括：向所述具有基站功能的设备服务的终端发送指示信息；指示所述终端从所述指示信息中获取所述信 道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过向具有基站功能的设备服务的终端发送指示信息，并指示终端从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，可以使终端获取第一控制区域的长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要是具有基站功能的设备服务的终端即可，另外，具有基站功能的设备包括基站、通过通信设备(如智能手机等)实现的微小区基站等。
在上述技术方案中，优选地，还包括：所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过将上述指示信息使用授权频段或非授权频段发送至终端，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述指示信息包括：需通过授权频段发送的物理层信令，或授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或通过授权频段向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过将上述指示信息通过授权频段发送至终端，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号时，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号；
当然，基站通过授权频段发送的指示信息还可以包括第二控制区域的第二区域长度和第二起始位置，或由终端自己检测第二控制区域的第二区域长度和第二起始位置。
在上述技术方案中，优选地，还包括：所述指示信息包括：预留信号， 其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过向终端发送该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，还包括：所述指示方法适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
在该技术方案中，由于信道空闲检测子帧CCA存在于非授权频段的帧 结构上，因此，该指示方法适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
本发明的另一方面提出了一种信道空闲检测子帧上的控制区域的指示系统，用于具有基站功能的设备，包括：发送单元，向所述具有基站功能的设备服务的终端发送指示信息；指示单元，指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过向具有基站功能的设备服务的终端发送指示信息，并指示终端从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，可以使终端获取第一控制区域的长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要是具有基站功能的设备服务的终端即可，另外，具有基站功能的设备包括基站、通过通信设备(如智能手机等)实现的微小区基站等。
在上述技术方案中，优选地，还包括：所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及所述发送单元具体用于：通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element) 或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过将上述指示信息使用授权频段或非授权频段发送至终端，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述指示信息包括：需通过授权频段发送的物理层信令，或授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及所述发送单元具体用于：通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或通过授权频段向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过将上述指示信息通过授权频段发送至终端，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号时，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一 控制区域的起始位置是CCA后的第一个OFDM个符号。
在上述技术方案中，优选地，还包括：所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及所述发送单元具体用于：在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过向终端发送该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，还包括：所述指示系统适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
在该技术方案中，由于信道空闲检测子帧CCA存在于非授权频段的帧结构上，因此，该指示系统适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
本发明的又一方面提出了一种信道空闲检测子帧上的控制区域的获取方法，用于终端，包括：接收来自具有基站功能的设备发送的指示信息；从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过接收来自具有基站功能的设备发送的指示信息，可以从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，进而获取第一控制区域的长度和第一起始位置，以实现及时准确地接收下行控制信道，以及获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要位于具有基站功能的设备覆盖范围内即可。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、 媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过使用授权频段或非授权频段接收上述指示信息，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体还包括：从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或根据所述授权频段上所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度和第二控制区域的第二起始位置，和第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过授权频段接收上述指示信息，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度和第二控制区域的第二起始位置，以及第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的 大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备发送的预留信号；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过接收该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频 位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
本发明的又一方面提出了一种信道空闲检测子帧上的控制区域的获取系统，用于终端，包括：接收单元，接收来自具有基站功能的设备发送的指示信息；获取单元，从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过接收来自具有基站功能的设备发送的指示信息，可以从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，进而获取第一控制区域的长度和第一起始位置，以实现及时准确地接收下行控制信道，以及获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要位于具有基站功能的设备覆盖范围内即可。
在上述技术方案中，优选地，还包括：所述接收单元具体用于：接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；所述获取单元具体用于：从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即 变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过使用授权频段或非授权频段接收上述指示信息，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述接收单元具体用于：接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；所述获取单元具体用于：从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度和第二控制区域的第二起始位置，和第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过授权频段接收上述指示信息，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度和第二控制区域的第二起始位置，以及第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非 授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号。
在上述技术方案中，优选地，还包括：所述接收单元具体用于接收所述具有基站功能的设备发送的预留信号；所述获取单元具体用于根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过接收该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
本发明的再一方面提出了一种具有基站功能的设备，包括：通信总线、收发装置、存储器以及处理器，其中：
所述通信总线，用于实现所述收发装置、所述存储器以及所述处理器之间的连接通信；
所述存储器中存储一组程序代码，且处理器调用存储器中存储的程序代码，用于执行以下操作：
控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息；
指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在上述技术方案中，优选地，所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及
所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
通过授权频段或非授权频段控制所述收发装置向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
通过授权频段或非授权频段控制所述收发装置向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在上述技术方案中，优选地，所述指示信息包括：需通过授权频段发送的物理层信令，或
授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及
所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
通过授权频段控制所述收发装置向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
通过授权频段控制所述收发装置向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在上述技术方案中，优选地，所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及
所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
在所述信道空闲检测子帧检测到下行信道空闲时，控制所述收发装置向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述设备适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
在该技术方案中，通过在具有基站功能的设备上设置信道空闲检测子帧上的控制区域的指示系统，能够使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
本发明的再一方面提出了一种终端，包括：通信总线、收发装置、存储器以及处理器，其中：
所述通信总线，用于实现所述收发装置、所述存储器以及所述处理器之间的连接通信；
所述存储器中存储一组程序代码，且处理器调用存储器中存储的程序代码，用于执行以下操作：
控制所述收发装置接收来自具有基站功能的设备发送的指示信息；
从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在上述技术方案中，优选地，所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
控制所述收发装置接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；
所述处理器从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；
所述获取单元具体用于：
从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
接收所述具有基站功能的设备发送的预留信号；
所述处理器从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，通过在终端上设置信道空闲检测子帧上的控制区域的获取系统，能够使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
本发明的再一方面提出了一种通信系统，包括：如上述技术方案所述的具有基站功能的设备和如上述技术方案所述的终端，所述终端与所述具有基站功能的设备通过无线信号连接。
在该技术方案中，通过由如上述技术方案所述的具有基站功能的设备和如上述技术方案所述的终端所组成的通信系统，可以使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
通过本发明的技术方案，可以使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
附图说明
图1示出了移动通信在非授权频谱上传输的工作原理图；
图2示出了相关技术中的一个实施例的信道空闲检测子帧上的控制区域的起始位置；
图3示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域 的指示方法的流程示意图；
图4示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的指示系统的结构示意图；
图5示出了根据本发明的一个实施例的具有基站功能的设备的结构示意图；
图6示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的获取方法的流程示意图；
图7示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的获取系统的结构示意图；
图8示出了根据本发明的一个实施例的终端的结构示意图；
图9示出了根据本发明的一个实施例的通信系统的结构示意图；
图10示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的指示原理示意图；
图11示出了本发明的另一个实施例的信道空闲检测子帧上的控制区域的指示原理示意图；
图12示出了本发明的又一个实施例的信道空闲检测子帧上的控制区域的指示原理示意图。
图13示出了根据本发明的一个实施例的设备的结构示意图。
图14示出了根据本发明的一个实施例的终端的结构示意图。
具体实施方式
为了可以更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的其他方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
图3示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的指示方法的流程示意图。
如图3所示，示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的指示方法，包括：步骤302，向所述具有基站功能的设备服务的终端发送指示信息；步骤304，指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过向具有基站功能的设备服务的终端发送指示信息，并指示终端从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，可以使终端获取第一控制区域的长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要是具有基站功能的设备服务的终端即可，另外，具有基站功能的设备包括基站、通过通信设备(如智能手机等)实现的微小区基站等。
在上述技术方案中，优选地，还包括：所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即 变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过将上述指示信息使用授权频段或非授权频段发送至终端，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述指示信息包括：需通过授权频段发送的物理层信令，或授权频段上的第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或通过授权频段向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过将上述指示信息通过授权频段发送至终端，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号时，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号；
当然，基站通过授权频段发送的指示信息还可以包括第二控制区域的第二区域长度和第二起始位置，或由终端自己检测第二控制区域的第二区域长度和第二起始位置。
在上述技术方案中，优选地，还包括：所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过向终端发送该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第 一区域长度和所述第一起始位置。
在上述技术方案中，优选地，还包括：所述指示方法适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
在该技术方案中，由于信道空闲检测子帧CCA存在于非授权频段的帧结构上，因此，该指示方法适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
图4示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的指示系统的结构示意图。
如图4所示，示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的指示系统400，包括：发送单元402，向所述具有基站功能的设备服务的终端发送指示信息；指示单元404，指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过向具有基站功能的设备服务的终端发送指示信息，并指示终端从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，可以使终端获取第一控制区域的长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要是具有基站功能的设备服务的终端即可，另外，具有基站功能的设备包括基站、通过通信设备(如智能手机等)实现的微小区基站等。
在上述技术方案中，优选地，还包括：所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及所述发送单元402具体用于：通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒 体接入控制单元或物理层信令，或通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过将上述指示信息使用授权频段或非授权频段发送至终端，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述指示信息包括：需通过授权频段发送的物理层信令，或授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系，以及所述发送单元402具体用于：通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或通过授权频段向所述终端所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过将上述指示信息通过授权频段发送至终端，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。 例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM(Orthogonal Frequency Division Multiplexing，正交频分复用技术)符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号时，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号；
当然，基站通过授权频段发送的指示信息还可以包括第二控制区域的第二区域长度和第二起始位置，或由终端自己检测第二控制区域的第二区域长度和第二起始位置。
在上述技术方案中，优选地，还包括：所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及所述发送单元402具体用于：在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过向终端发送该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列 值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，还包括：所述指示系统适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
在该技术方案中，由于信道空闲检测子帧CCA存在于非授权频段的帧结构上，因此，该指示系统适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
图5示出了根据本发明的一个实施例的具有基站功能的设备的结构示意图。
如图5所示，示出了本发明的一个实施例的具有基站功能的设备500，包括：如上述技术方案中任一项所述的信道空闲检测子帧上的控制区域的指示系统400。
在该技术方案中，通过在具有基站功能的设备500上设置信道空闲检测子帧上的控制区域的指示系统400，能够使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
图6示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的获取方法的流程示意图。
如图6所示，示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的获取方法，包括：步骤602，接收来自具有基站功能的设备发送的指示信息；步骤604，从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控 制区域的第一起始位置。
在该技术方案中，通过接收来自具有基站功能的设备发送的指示信息，可以从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，进而获取第一控制区域的长度和第一起始位置，以实现及时准确地接收下行控制信道，以及获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要位于具有基站功能的设备覆盖范围内即可。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过使用授权频段或非授权频段接收上述指示信息，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的 设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体还包括：从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或根据所述授权频段上的第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度和第二控制区域的第二起始位置，和第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过授权频段接收上述指示信息，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度和第二控制区域的第二起始位置，以及第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号。
在上述技术方案中，优选地，还包括：所述接收来自具有基站功能的 设备发送的指示信息的过程，具体包括：接收所述具有基站功能的设备发送的预留信号；所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过接收该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
图7示出了根据本发明的一个实施例的信道空闲检测子帧上的控制区域的获取系统的结构示意图。
如图7所示，示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的获取系统700，包括：接收单元702，接收来自具有基站功能的设备发送的指示信息；获取单元704，从所述指示信息中获取所述信道空闲 检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在该技术方案中，通过接收来自具有基站功能的设备发送的指示信息，可以从指示信息中获取信道空闲检测子帧上的第一控制区域的参数信息，进而获取第一控制区域的长度和第一起始位置，以实现及时准确地接收下行控制信道，以及获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，该终端可以位于具有基站功能的设备所在的小小区，也可以位于与具有基站功能的设备所在的小小区相邻的邻小小区内，只要位于具有基站功能的设备覆盖范围内即可。
在上述技术方案中，优选地，还包括：所述接收单元702具体用于：接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；所述获取单元704具体用于：从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息可以是携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令(即RRC，Radio Resource Control)、媒体接入控制单元(MAC CE，Medium Access Control Control Element)或物理层信令，或携带有预设的(即变化的)第一区域长度和预设的(即变化的)第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，而通过使用授权频段或非授权频段接收上述指示信息，可以使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。
在上述技术方案中，优选地，还包括：所述接收单元702具体用于： 接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系；所述获取单元704具体用于：从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是需通过授权频段发送的携带有第一控制区域的第一区域长度和第一起始位置的物理层信令，或授权频段上的第二控制区域的第二区域长度和第二控制区域的第二起始位置，和第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系，而通过授权频段接收上述指示信息，可以使终端直接从上述物理层信令中获取该第一控制区域的第一区域长度和第一起始位置，或者根据授权频段上的帧结构中的第二区域长度和第二控制区域的第二起始位置，以及第二区域长度与第一区域长度的对应关系、第二起始位置与第一起始位置的对应关系推算出CCA子帧上的第一控制区域的第一区域长度和第一起始位置，从而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制。例如：如果预先定义了非授权频谱上的第一控制区域的大小是Pcell(Primary-Cell主小区)使用的授权频段上的第二控制区域大小的三分之一，且第一控制区域的起始位置是CCA符号后的第一个OFDM符号，则当Pcell使用的授权频段上的第二控制区域大小是3个OFDM符号，那么终端就会根据第二区域长度与第一区域长度的对应关系推算出非授权频谱上的CCA子帧上的第一控制区域是1个OFDM符号，同时，明确第一控制区域的起始位置是CCA后的第一个OFDM个符号。
在上述技术方案中，优选地，还包括：所述接收单元702具体用于接收所述具有基站功能的设备发送的预留信号；所述获取单元704具体用于 根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在该技术方案中，指示信息还可以是包括了用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值的预留信号，通过接收该预留信号(reservation signal)，可以使终端能够根据预留信号中的用于指示所述第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置，进而使终端能够及时准确地接收下行控制信道，并最终实现准确地获取下行控制信道上承载的控制信令，进而实现具有基站功能的设备对终端的控制，当然，本领域技术人员应当知晓，预留信号有多位序列，而第一序列值和第二序列值对应的序列可以是该多位序列中的一位或者某几位，而且第一序列值和第二序列值对应的序列也可以是该多位序列的任一位置或任几个位置，
例如：当reservation信号是一个长度为10的序列时，可以用第1个序列上的序列值表示第一序列值，或用第10个序列上的序列值表示第二序列值，终端根据第一序列值和第二序列值的即可推算出第一区域长度和第一起始位置，当然也可以用第6个和第7个序列上的序列值表示第一序列值，用第8个和第9个序列上的序列值表示第二序列值；
另外，使用预留信号指示第一区域长度和第一起始位置的方法包括但不限于通过预留信号中的序列值指示终端，例如：还可以通过预留信号占用的时频位置等作为指示信息，以将包含了所述预留信号占用的所述时频位置的所述指示信息发送至终端，以使终端通过所述时频位置判断所述第一区域长度和所述第一起始位置。
图8示出了根据本发明的一个实施例的终端的结构示意图。
如图8所示，示出了本发明的一个实施例的终端800，包括：如上述技术方案中任一项所述的信道空闲检测子帧上的控制区域的获取系统700。
在该技术方案中，通过在终端800上设置信道空闲检测子帧上的控制区域的获取系统700，能够使终端800可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
图9示出了根据本发明的一个实施例的通信系统的结构示意图。
如图9所示，示出了本发明的一个实施例的通信系统900，包括：如上述技术方案所述的具有基站功能的设备500和如上述技术方案所述的终端800，所述终端800与所述具有基站功能500的设备通过无线信号连接。
在该技术方案中，通过由如上述技术方案所述的具有基站功能的设备500和如上述技术方案所述的终端800所组成的通信系统900，可以使终端800可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
图10示出了本发明的一个实施例的信道空闲检测子帧上的控制区域的指示原理示意图。
如图10所示，具有基站功能的设备可以通过授权频段或非授权频段向终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或通过授权频段或非授权频段向终端发送携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以使终端从上述指示信息中获取CCA子帧上的第一控制区域的第一区域长度和第一控制区域的第一起始位置，在这种指示方法中，控制区域的起始位置是固定的或者是可配置的：
比如：指示信息可以是一个预先定义的具有固定第一起始位置和固定第一区域长度的RCC(Radio Resource Control，无线资源控制)信令，MAC CE(Medium Access Control Element，媒体接入控制单元)或者是物理层信令，或者是每次都需要临时配置的具有可变第一起始位置和可变第一区域长度的RCC信令，MAC CE或者是物理层信令，而图10对应的指示信息就是具有固定第一起始位置和固定第一区域长度的RCC信令，MAC CE或者是物理层信令，具体的配置情况为：第一控制区域是从CCA子帧(即子帧N+1)上的倒数第三个OFDM符号开始，第一控制区域的大小是2个OFDM符号，而终端通过授权频段或非授权频段接收该RCC信令，MAC CE或者是物理层信令就可以获知此配置，进而可以在相应的位置上去接收控制信道，当然，RCC信令，MAC CE或者是物理层信令上承载的第一区域长度和第一起始位 置可以是固定的，也可以是不固定的，即每次发送至终端的携带有第一区域长度和第一起始位置的RCC信令，MAC CE或者是物理层信令上的第一区域长度和第一起始位置都是随机配置的。
图11示出了本发明的另一个实施例的信道空闲检测子帧上的控制区域的指示原理示意图。
如图11所示，具有基站功能的设备还可以通过授权频段向终端发送物理层信令，以使终端通过该物理层信令获取第一区域长度和第一起始位置，或通过授权频段向终端发送授权频段上的第二控制区域的第二区域长度与第一区域长度的对应关系、第二控制区域的第二起始位置与第一起始位置的对应关系，以使终端从上述指示信息中获取CCA子帧上的第一控制区域的第一区域长度和第一控制区域的第一起始位置，而这种指示方法，是通过Pcell中的具有基站功能的设备进行通知的：
由于在LAA(Licensed Assisted Access，辅助的接入技术)系统中，终端始终有授权频谱的Pcell提供服务，因此可以通过Pcell通知终端CCA子帧上的第一控制区域的起始位置和长度，通知的方法可以是显示的或是隐式的，显示的方法是指Pcell通过物理层信令显示地直接地告知非授权频谱上的第一控制区域的长度和第一起始位置，隐式的方法是指定义一定的规则，隐含地指示终端非授权频谱上的第一控制区域的大小和第一起始位置，比如：预先定义非授权频谱上的第一控制区域的长度是Pcell上第二控制区域长度的一半，第一控制区域的第一起始位置是CCA子帧上的CCA符号后的第一个OFDM符号开始，并利用授权频段将Pcell上的第二控制区域的第二起始位置与第一控制区域的第一起始位置之间的对应关系，以及第二控制区域的长度与第一控制区域的长度之间的对应关系以指示信息的形式发送至终端，这样，终端就可以获取第一控制区域的大小和第一起始位置；
如图11中所示，在子帧N+1上，Pcell上的第二控制区域大小是2个OFDM符号，那么终端在获取上述指示信息后，就会知道非授权频谱的子帧N+1(即CCA子帧)上第一控制区域的长度是1个OFDM符号，第一控制区域的起始位置是CCA符号后第一个OFDM个符号。
图12示出了本发明的又一个实施例的信道空闲检测子帧上的控制区 域的指示原理示意图。
如图12所示，具有基站功能的设备还可以在信道空闲检测子帧检测到下行信道空闲时，向终端发送预留信号即reservation signal，以使终端根据预留信号中的用于指示第一区域长度的第一序列值和用于指示第一起始位置的第二序列值，获取第一区域长度和第一起始位置：
在这种方法下，由于LAA系统中，在做完CCA检测后，确定信道可以占用之后，具有基站功能的设备可能会发送reservation信号，因此，可以通过reservation信号来隐式的指示非授权频谱上的第一控制区域的大小和第一起始位置；
具体来说，可以通过reservation信号的不同的序列来隐式地指示第一控制区域的长度和第一起始位置，如图12所示，假设reservation信号是一个长度为10的序列，那么，如果预先指定序列的前两位用来指示第一控制区域的长度即该10位序列的前两位序列的序列值为第一序列值，后面8位用来第一控制区域的第一起始位置即该10位序列的后八位序列的序列值为第二序列值，并将该定义以指示信息的形式发送至终端，这样，终端就可以隐式地知道根据前两位序列的序列值可以获取第一控制区域的长度，并根据后8位序列的序列值可以获取第一起始位置，如图12所示，在图12中，当前两位序列的序列值为00时，终端根据指示信息就会知道第一控制区域长度为1个OFDM符号；当前两位序列的序列值为01时，终端根据指示信息就会知道第一控制区域长度为2个OFDM符号；当前两位序列的序列值为10时，终端根据指示信息就会知道第一控制区域长度为3个OFDM符号；当前两位序列的序列值为11时，终端根据指示信息就会知道第一控制区域长度为4个OFDM符号；当后8位序列的序列值为00000000时，终端根据指示信息就会知道第一起始位置是reservation信号后的第1个OFDM符号，当后8位序列的序列值为00000001时，终端根据指示信息就会知道第一起始位置是reservation信号后的第2个OFDM符号，依次类推。
当然，图12所示的序列仅仅是个示例，序列的长度可能是不一样的(如可以为12位等)，序列中指示第一控制区域大小和第一起始位置的序列的 地方也可能是不一样的，例如：当reservation信号的长度仍为10个序列时，如果预先指定序列的前三位用来指示第一控制区域的长度即该10位序列的前三位序列的序列值为第一序列值，倒数后2位用来第一控制区域的第一起始位置即该10位序列的倒数后2位序列的序列值为第二序列值，并将该定义以指示信息的形式发送至终端。
图13示出了根据本发明的实施例的设备的结构示意图。如图13所示，所述设备可以包括：至少一个收发装置503，至少一个处理器501，例如CPU，存储器504和至少一个通信总线502。
其中，上述通信总线502用于连接上述收发装置503、处理器501和存储器504。
上述存储器504可以是高速RAM存储器，也可为非不稳定的存储器(non-volatile memory)，例如磁盘存储器。上述存储器504还用于存储一组程序代码，上述收发装置503和处理器501用于调用存储器504中存储的程序代码，执行如下操作：
控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息；
指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在上述技术方案中，优选地，所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及
所述处理器501控制所述收发装置503向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
通过授权频段或非授权频段控制所述收发装置503向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
通过授权频段或非授权频段控制所述收发装置503向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
在上述技术方案中，优选地，所述指示信息包括：需通过授权频段发送的物理层信令，或
授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及
所述处理器501控制所述收发装置503向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
通过授权频段控制所述收发装置503向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
通过授权频段控制所述收发装置503向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
在上述技术方案中，优选地，所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及
所述处理器501控制所述收发装置503向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
在所述信道空闲检测子帧检测到下行信道空闲时，控制所述收发装置503向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述设备适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
图14示出了根据本发明的实施例的终端的结构示意图。如图14所示，所述终端可以包括：至少一个收发装置603，至少一个处理器601，例如CPU，存储器604和至少一个通信总线602。
其中，上述通信总线602用于连接上述收发装置603、处理器601和存储器604。
上述存储器604可以是高速RAM存储器，也可为非不稳定的存储器(non-volatile memory)，例如磁盘存储器。上述存储器604还用于存储一组程序代码，上述收发装置603和处理器601用于调用存储器604中存储的程序代码，执行如下操作：
控制所述收发装置603接收来自具有基站功能的设备发送的指示信息；
从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
在上述技术方案中，优选地，所述处理器601控制所述收发装置603接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
控制所述收发装置603接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；
所述处理器601从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述处理器601控制所述收发装置603接 收来自具有基站功能的设备发送的指示信息的步骤具体包括：
接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；
所述获取单元具体用于：
从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
在上述技术方案中，优选地，所述处理器601控制所述收发装置603接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
接收所述具有基站功能的设备发送的预留信号；
所述处理器601从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
以上结合附图详细说明了本发明的技术方案，可以使终端可以明确CCA子帧上的控制区域的起始位置和长度，以及时准确地接收下行控制信道，进而准确地获取下行控制信道上承载的控制信令。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (28)

  1. 一种信道空闲检测子帧上的控制区域的指示方法，用于具有基站功能的设备，其特征在于，包括：
    向所述具有基站功能的设备服务的终端发送指示信息；
    指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  2. 根据权利要求1所述的信道空闲检测子帧上的控制区域的指示方法，其特征在于，
    所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及
    所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：
    通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
  3. 根据权利要求1所述的信道空闲检测子帧上的控制区域的指示方法，其特征在于，
    所述指示信息包括：需通过授权频段发送的物理层信令，或
    授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及
    所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具 体包括：
    通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    通过授权频段向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
  4. 根据权利要求1所述的信道空闲检测子帧上的控制区域的指示方法，其特征在于，
    所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及
    所述向所述具有基站功能的设备服务的终端发送指示信息的过程，具体包括：
    在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
  5. 根据权利要求1至4中任一项所述的信道空闲检测子帧上的控制区域的指示方法，其特征在于，
    所述指示方法适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
  6. 一种信道空闲检测子帧上的控制区域的指示系统，用于具有基站功能的设备，其特征在于，包括：
    发送单元，向所述具有基站功能的设备服务的终端发送指示信息；
    指示单元，指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  7. 根据权利要求6所述的信道空闲检测子帧上的控制区域的指示系统，其特征在于，
    所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位 置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及
    所述发送单元具体用于：
    通过授权频段或非授权频段向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    通过授权频段或非授权频段向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令。
  8. 根据权利要求6所述的信道空闲检测子帧上的控制区域的指示系统，其特征在于，
    所述指示信息包括：需通过授权频段发送的物理层信令，或
    授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及
    所述发送单元具体用于：
    通过授权频段向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    通过授权频段向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
  9. 根据权利要求6所述的信道空闲检测子帧上的控制区域的指示系统，其特征在于，
    所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及
    所述发送单元具体用于：
    在所述信道空闲检测子帧检测到下行信道空闲时，向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述 第一区域长度和所述第一起始位置。
  10. 根据权利要求6至9中任一项所述的信道空闲检测子帧上的控制区域的指示系统，其特征在于，
    所述指示系统适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
  11. 一种信道空闲检测子帧上的控制区域的获取方法，用于终端，其特征在于，包括：
    接收来自具有基站功能的设备发送的指示信息；
    从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  12. 根据权利要求11所述的信道空闲检测子帧上的控制区域的获取方法，其特征在于，
    所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：
    接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；
    所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：
    从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
  13. 根据权利要求11所述的信道空闲检测子帧上的控制区域的获取方法，其特征在于，
    所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：
    接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；
    所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体还包括：
    从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
  14. 根据权利要求11所述的信道空闲检测子帧上的控制区域的获取方法，其特征在于，
    所述接收来自具有基站功能的设备发送的指示信息的过程，具体包括：
    接收所述具有基站功能的设备发送的预留信号；
    所述从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息的过程，具体包括：
    根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
  15. 一种信道空闲检测子帧上的控制区域的获取系统，用于终端，其特征在于，包括：
    接收单元，接收来自具有基站功能的设备发送的指示信息；
    获取单元，从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  16. 根据权利要求15所述的信道空闲检测子帧上的控制区域的获取系统，其特征在于，
    所述接收单元具体用于：
    接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；
    所述获取单元具体用于：
    从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
  17. 根据权利要求15所述的信道空闲检测子帧上的控制区域的获取系统，其特征在于，
    所述接收单元具体用于：
    接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；
    所述获取单元具体用于：
    从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
  18. 根据权利要求15所述的信道空闲检测子帧上的控制区域的获取系 统，其特征在于，
    所述接收单元具体用于：接收所述具有基站功能的设备发送的预留信号；
    所述获取单元具体用于：根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
  19. 一种具有基站功能的设备，其特征在于，所述设备包括通信总线、收发装置、存储器以及处理器，其中：
    所述通信总线，用于实现所述收发装置、所述存储器以及所述处理器之间的连接通信；
    所述存储器中存储一组程序代码，且处理器调用存储器中存储的程序代码，用于执行以下操作：
    控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息；
    指示所述终端从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  20. 根据权利要求19所述的设备，其特征在于，
    所述指示信息包括：携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，以及
    所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
    通过授权频段或非授权频段控制所述收发装置向所述终端发送所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或
    通过授权频段或非授权频段控制所述收发装置向所述终端发送所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒 体接入控制单元或物理层信令。
  21. 根据权利要求19所述的设备，其特征在于，
    所述指示信息包括：需通过授权频段发送的物理层信令，或
    授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系，以及
    所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
    通过授权频段控制所述收发装置向所述终端发送所述物理层信令，以使所述终端通过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    通过授权频段控制所述收发装置向所述终端发送所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系。
  22. 根据权利要求19所述的设备，其特征在于，
    所述指示信息包括：预留信号，其中，所述预留信号中包括用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，以及
    所述处理器控制所述收发装置向所述具有基站功能的设备服务的终端发送指示信息的步骤具体包括：
    在所述信道空闲检测子帧检测到下行信道空闲时，控制所述收发装置向所述终端发送所述预留信号，以使所述终端根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
  23. 根据权利要求19至22中任一项所述的设备，其特征在于，
    所述设备适用于指示非授权频段上的信道空闲检测子帧上的控制区域。
  24. 一种终端，其特征在于，所述终端包括通信总线、收发装置、存储器以及处理器，其中：
    所述通信总线，用于实现所述收发装置、所述存储器以及所述处理器之间 的连接通信；
    所述存储器中存储一组程序代码，且处理器调用存储器中存储的程序代码，用于执行以下操作：
    控制所述收发装置接收来自具有基站功能的设备发送的指示信息；
    从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道，其中，所述参数信息包括：所述第一控制区域的第一区域长度和所述第一控制区域的第一起始位置。
  25. 根据权利要求24所述的终端，其特征在于，
    所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
    控制所述收发装置接收所述具有基站功能的设备发送的携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令，或接收所述具有基站功能的设备发送的携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令；
    所述处理器从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
    从所述携带有固定的第一区域长度和固定的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    从所述携带有预设的第一区域长度和预设的第一起始位置的无线资源控制信令、媒体接入控制单元或物理层信令中直接获取所述第一区域长度和所述第一起始位置。
  26. 根据权利要求24所述的终端，其特征在于，
    所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
    接收所述具有基站功能的设备通过授权频段发送的物理层信令，以通 过所述物理层信令获取所述第一区域长度和所述第一起始位置，或
    接收所述具有基站功能的设备通过授权频段发送的授权频段上的第二控制区域的第二区域长度与所述第一区域长度的对应关系、第二起始位置与所述第一起始位置的对应关系；
    所述获取单元具体用于：
    从所述物理层信令中直接获取所述第一区域长度和所述第一起始位置，或
    根据所述授权频段上的所述第二区域长度与所述第一区域长度的对应关系、所述第二起始位置与所述第一起始位置的对应关系获取所述第一区域长度和所述第一起始位置。
  27. 根据权利要求24所述的终端，其特征在于，
    所述处理器控制所述收发装置接收来自具有基站功能的设备发送的指示信息的步骤具体包括：
    接收所述具有基站功能的设备发送的预留信号；
    所述处理器从所述指示信息中获取所述信道空闲检测子帧上的第一控制区域的参数信息，以根据所述参数信息获取下行控制信道的步骤具体包括：
    根据所述预留信号中的用于指示所述第一区域长度的第一序列值和用于指示所述第一起始位置的第二序列值，获取所述第一区域长度和所述第一起始位置。
  28. 一种通信系统，其特征在于，包括：如权利要求19-23任一项所述的具有基站功能的设备和如权利要求24-27任一项所述的终端，所述终端与所述具有基站功能的设备通过无线信号连接。
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