WO2018121772A1 - 控制信道的资源指示方法、用户设备和网络设备 - Google Patents

控制信道的资源指示方法、用户设备和网络设备 Download PDF

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Publication number
WO2018121772A1
WO2018121772A1 PCT/CN2017/120221 CN2017120221W WO2018121772A1 WO 2018121772 A1 WO2018121772 A1 WO 2018121772A1 CN 2017120221 W CN2017120221 W CN 2017120221W WO 2018121772 A1 WO2018121772 A1 WO 2018121772A1
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WIPO (PCT)
Prior art keywords
user equipment
search space
frequency domain
information
domain resource
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PCT/CN2017/120221
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English (en)
French (fr)
Inventor
张旭
薛丽霞
曲秉玉
李俊超
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2019536105A priority Critical patent/JP7032407B2/ja
Priority to BR112019013562-6A priority patent/BR112019013562A2/pt
Priority to RU2019123843A priority patent/RU2760155C2/ru
Priority to EP17888297.3A priority patent/EP3554160B1/en
Publication of WO2018121772A1 publication Critical patent/WO2018121772A1/zh
Priority to US16/456,935 priority patent/US11343800B2/en
Priority to US17/739,950 priority patent/US20220264553A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource configuration method for a control channel, a network device, and a user equipment.
  • a network device needs to indicate a time-frequency resource of a control channel to a user equipment.
  • the indication information of the time-frequency resource of the control channel is carried by the broadcast channel.
  • the network device indicates the size of the frequency domain resource of the control channel by using the indication information carried in the physical broadcast channel (PBCH), and carries the control channel in the physical control format indicator channel (PCFICH). The size of the time domain resource.
  • PBCH physical broadcast channel
  • PCFICH physical control format indicator channel
  • the next-generation communication system supports user equipment access of a plurality of different bandwidth widths, and the bandwidth of the channel that each user equipment can detect is different. If the current design scheme is used, since the PBCH is public signaling, it is not possible to allocate a dedicated working bandwidth for each user equipment, so the user equipment cannot know its own dedicated working frequency domain resource information when establishing a connection with the network device.
  • the embodiment of the present invention provides a resource indication method for a control channel, a network device, and a user equipment, which can indicate, in an initial access phase, a frequency domain resource location of a search space where a control channel is located.
  • the first aspect provides a resource indication method for a control channel, including: transmitting a preamble sequence; receiving high layer signaling corresponding to the preamble sequence, where the high layer signaling is downlink controlled by a common search space
  • the frequency domain resource location information of the user equipment-specific search space is determined according to the high-layer signaling, where the frequency domain resource location information includes the frequency domain resource unit occupied by the user equipment-specific search space in the frequency domain. The number and location of the frequency domain resource unit.
  • the access bandwidth capability message is sent in the preamble sequence or the third message, and the indication information of the dedicated search space is received in the high layer signaling, such as Message 2 or Message 4, so that the user equipment is initially connected.
  • a dedicated search space is determined. And, different dedicated search space locations and sizes are determined for different user equipment bandwidth capabilities. The method expands the control channel capacity, reduces the collision probability when the control channel is initially accessed, and reduces the access delay.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the scrambling sequence of the reference signal is used to demodulate the user equipment specific search space.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment specific search space and/or the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the sequence of preamble signals sent by the user equipment includes the indication information for indicating an access bandwidth capability of the user equipment.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the method further includes: sending uplink response information, where the uplink response information includes an access bandwidth of the user equipment. ability.
  • broadcast information is received, the broadcast information including a mapping manner for indicating the common search space, the mapping manner including discrete mapping and continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a second aspect provides a resource indication method for a control channel, including: receiving a preamble sequence sent by a user equipment; determining high layer signaling corresponding to the preamble sequence, where the high layer signaling is carried by a common search space
  • the high-level signaling is used to indicate the frequency domain resource location information of the user equipment-specific search space, where the frequency domain resource location information includes the frequency occupied by the user equipment-specific search space in the frequency domain.
  • the number of domain resource units and the location of the frequency domain resource unit transmitting the high layer signaling.
  • the indication information of the dedicated search space is received in the high layer signaling, such as Message 2 or Message 4, so that the user equipment determines the dedicated search space when initially accessing. And, different dedicated search space locations and sizes are determined for different user equipment bandwidth capabilities.
  • the method expands the control channel capacity, reduces the collision probability when the control channel is initially accessed, and reduces the access delay.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the received sequence of the preamble signals includes the indication information for indicating an access bandwidth capability of the user equipment.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the method before receiving the high-level signaling after receiving the preamble sequence, the method further includes: receiving uplink response information, where the uplink response information includes an access bandwidth of the user equipment. ability.
  • the method further includes: transmitting broadcast information, the broadcast information including a mapping manner for indicating the common search space, the mapping manner including a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a third aspect provides a resource indication method for a control channel, including: receiving high layer signaling, where the high layer signaling is indicated by downlink control information carried in a common search space; and determining a user according to the high layer signaling
  • the frequency domain resource location information of the device-specific search space where the frequency domain resource location information includes the number of frequency domain resource units occupied by the user equipment-specific search space in the frequency domain and the location of the frequency domain resource unit.
  • the indication information of the dedicated search space may be received in the high layer signaling, such as Message 2 or Message 4, so that the user equipment determines the dedicated search space when initially accessing. And, different dedicated search space locations and sizes are determined for different user equipment bandwidth capabilities.
  • the method expands the control channel capacity, reduces the collision probability when the control channel is initially accessed, and reduces the access delay.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the scrambling sequence of the reference signal is used to demodulate the user equipment specific search space.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment specific search space and/or the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the method before receiving the high layer signaling, the method further includes: sending uplink response information, where the uplink response information includes an access bandwidth capability of the user equipment.
  • broadcast information is received, the broadcast information including a mapping manner for indicating the common search space, the mapping manner including discrete mapping and continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a fourth aspect provides a resource indication method for a control channel, including: determining high layer signaling, where the high layer signaling is indicated by downlink control information carried by a common search space, and the high layer signaling is used to indicate a user.
  • the frequency domain resource location information of the device-specific search space where the frequency domain resource location information includes the number of frequency domain resource units occupied by the user equipment-specific search space in the frequency domain and the location of the frequency domain resource unit; The high layer signaling.
  • the indication information of the dedicated search space is received in the high layer signaling, such as Message 2 or Message 4, so that the user equipment determines the dedicated search space when initially accessing. And, different dedicated search space locations and sizes are determined for different user equipment bandwidth capabilities.
  • the method expands the control channel capacity, reduces the collision probability when the control channel is initially accessed, and reduces the access delay.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the method before the sending the high layer signaling, the method further includes: receiving uplink response information, where the uplink response information includes an access bandwidth capability of the user equipment.
  • the method further includes: transmitting broadcast information, the broadcast information including a mapping manner for indicating the common search space, the mapping manner including a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a fifth aspect provides a user equipment, including: a sending unit, configured to send a preamble sequence; and a receiving unit, configured to receive high layer signaling corresponding to the preamble sequence, where the high layer signaling is performed by a common search
  • the processing unit is configured to determine frequency domain resource location information of the user equipment-specific search space according to the high-layer signaling, where the frequency domain resource location information includes the user equipment-specific search space. The number of frequency domain resource units occupied in the frequency domain and the location of the frequency domain resource unit.
  • the user equipment reports the user equipment access bandwidth capability during initial access, and can determine a dedicated search space suitable for its bandwidth access capability in the initial access phase.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the sequence of preamble signals sent by the sending unit includes the indication information for indicating an access bandwidth capability of a user equipment.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the sending unit is further configured to send uplink response information, the uplink response information, before the receiving unit receives the high layer signaling.
  • the access bandwidth capability of the user equipment is included.
  • the receiving unit is further configured to receive broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • the sixth aspect provides a network device, including: a receiving unit, configured to receive a sequence of preamble signals sent by the user equipment; and a processing unit, configured to determine high layer signaling corresponding to the sequence of the preamble signal, where the high layer signal
  • the high-level signaling is used to indicate frequency domain resource location information of a user equipment-specific search space, where the frequency domain resource location information includes the user equipment-specific search space at a frequency indicated by downlink control information carried by a common search space.
  • the number of frequency domain resource units occupied by the domain and the location of the frequency domain resource unit and a sending unit, configured to send the high layer signaling.
  • the network device receives the capability of the user equipment to access the bandwidth during the initial access, and can send high-level signaling in the initial access phase according to the access bandwidth capability, and is used to indicate a dedicated search space that matches the capability of the user equipment to access the bandwidth.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first Time-frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the sequence of preamble signals received by the receiving unit includes the indication information for indicating an access bandwidth capability of the user equipment.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the receiving unit after the receiving unit receives the preamble sequence, before the sending unit sends the high layer signaling, the receiving unit is further configured to receive uplink response information, the uplink response information.
  • the access bandwidth capability of the user equipment is included.
  • the sending unit is further configured to send broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • the seventh aspect provides a user equipment, including: a receiving unit, configured to receive high layer signaling, where the high layer signaling is indicated by downlink control information carried in a common search space; and a processing unit is configured to perform The high-level signaling determines the frequency domain resource location information of the user equipment-specific search space, where the frequency domain resource location information includes the number of frequency domain resource units occupied by the user equipment-specific search space in the frequency domain, and the frequency domain. The location of the resource unit.
  • the user equipment reports the user equipment access bandwidth capability during initial access, and can determine a dedicated search space suitable for its bandwidth access capability in the initial access phase.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second candidate control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first The one-time frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the user equipment further includes: a sending unit, configured to send uplink response information, where the uplink response information includes access by the user equipment, before the receiving unit receives the high layer signaling Bandwidth capability.
  • the receiving unit is further configured to receive broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a network device including: a processing unit, configured to determine high layer signaling, where the high layer signaling is indicated by downlink control information carried by a common search space, and the high layer signaling is used to indicate Frequency domain resource location information of the user equipment-specific search space, where the frequency domain resource location information includes the number of frequency domain resource units occupied by the user equipment-specific search space in the frequency domain and the location of the frequency domain resource unit; And a sending unit, configured to send the high layer signaling.
  • the network device receives the capability of the user equipment to access the bandwidth during the initial access, and can send high-level signaling in the initial access phase according to the access bandwidth capability, and is used to indicate a dedicated search space that matches the capability of the user equipment to access the bandwidth.
  • the common search space is located in a first time-frequency resource, the first time-frequency resource includes a plurality of first candidate control channels, and each of the plurality of first candidate control channels A candidate control channel includes one or more frequency domain resource units, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, and the second time-frequency resource includes a plurality of second control channels, each of the plurality of second candidate control channels
  • the second candidate control channel includes one or more frequency domain resource units
  • the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first Time-frequency resources do not completely coincide.
  • the high-level signaling further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping, where the mapping manner is the continuous mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit; or the frequency domain resource location further includes at least one of the frequency domain resource unit when the mapping manner is the discrete mapping s position.
  • the high layer signaling further includes one or more of the following information: subcarrier width information of the user equipment specific search space, and scrambling code sequence information of the reference signal in the user equipment specific search space.
  • the aggregation level information of the user equipment-specific search space and the transmission mode of the user equipment-specific search space are included in the high layer signaling.
  • the scrambling code sequence of the reference signal is used to demodulate a user equipment specific search space of the user equipment.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and the value of the aggregation level.
  • the time-frequency resource of the control channel includes the common search space and the user equipment-specific search space, where the time-frequency resource size of the control channel is greater than a predefined threshold.
  • the aggregation level set of the control channel is a first set; and when the time-frequency resource size of the control channel is less than a predefined threshold, the aggregation level set of the control channel is a second set.
  • the high-level signaling further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the high layer signaling is random access feedback information (RAR) signaling or radio resource control protocol (RRC) signaling.
  • RAR random access feedback information
  • RRC radio resource control protocol
  • the network device further includes: a receiving unit, configured to receive uplink response information before the sending unit sends the high layer signaling, where the uplink response information includes access by the user equipment Bandwidth capability.
  • the sending unit is further configured to send broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate the common search space. The way to map.
  • a user equipment comprising: a processor, a receiver, a memory, and a bus system, wherein the processor, the receiver, and the memory are connected by a bus system, the memory is configured to store instructions or code, and the processor is configured to execute the memory
  • the stored instructions or code cause the user device to perform any of the possible implementations of the first aspect or the first aspect or the method of any one of the third or third aspect.
  • a network device comprising: a processor, a transmitter, and a memory.
  • the memory is for storing instructions or code for executing the instructions or code stored by the memory, such that the network device performs any of the possible implementations of the second aspect or the second aspect or the fourth or fourth aspect A possible implementation of the method described.
  • a computer readable storage medium storing a program causing a user equipment to perform any of the above first aspect or any one of the possible implementations of the first aspect or the third Aspect or method of any of the possible implementations of the third aspect.
  • a twelfth aspect a computer readable storage medium storing a program causing a network device to perform any of the above-described second or second possible implementations or fourth Aspect or method of any of the possible implementations of the fourth aspect.
  • a computer program product comprising: computer program code, when the computer program code is executed by a user equipment, causing the user equipment to perform the first aspect or the first aspect Any of the possible implementations or the method of any of the third or third possible implementations.
  • a computer program product comprising: computer program code, when the computer program code is executed by a network device, causing the network device to perform any of the second aspect or the second aspect described above A possible implementation or the method of any of the possible implementations of the fourth aspect or the fourth aspect.
  • a resource indicating device for a control channel comprises at least one processor and at least one storage medium, the at least one storage medium storing an instruction, the instruction being
  • the processor when executed, causes the processor to perform any of the possible implementations of the first aspect or the first aspect, the second aspect, or any one of the possible implementations of the second aspect, the third aspect, or the third Any of the possible implementations of the aspects, or the method of any of the possible implementations of the fourth or fourth aspect.
  • a communication system comprising any one of the possible implementations of the fifth aspect or the fifth aspect, the seventh aspect or the seventh aspect, or any possible implementation or The user device according to the above aspect, and the foregoing any one of the sixth aspect or the sixth aspect, the possible implementation manner of the eighth aspect or the eighth aspect, or the network device of the tenth aspect .
  • 1 is a schematic diagram of an initial access process
  • FIG. 2 is a schematic flowchart of a resource indication method of a control channel according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a common search space and a user-specific search space according to an embodiment of the present invention
  • 4(a) is a schematic structural diagram of a search space in which frequency domain resource units are continuously distributed according to an embodiment of the present invention
  • 4(b) is a schematic structural diagram of a search space in which frequency domain resource units are discretely distributed according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a subcarrier width according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a reference signal of a search space according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a search space aggregation level according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a user equipment according to another embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a network device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a network device according to another embodiment of the present invention.
  • the technical solutions of the embodiments of the present invention can be applied to various communication systems, such as: wireless wifi, Worldwide Interoperability for Microwave Access (WiMAX), and Global System of Global Communications (Global System of Mobile communication, GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), and Third Generation Partnership Project (The 3rd) Generation Partnership Project, 3GPP) related cellular systems, etc., and The Fifth Generation Mobile Telecommunication System (5G).
  • the embodiments of the present invention are not limited.
  • the term "and/or” is merely an association relationship describing an associated object, indicating that there may be three relationships.
  • a and/or B may indicate that A exists separately, and A and B exist simultaneously, and B cases exist alone.
  • the character "/" in this article generally indicates that the contextual object is an "or" relationship.
  • the communication system includes a user equipment (User Equipment) 180 and a network equipment 190.
  • User Equipment User Equipment
  • network device 190 can include different network elements in different wireless communication systems.
  • the network device 190 may be a 5G network device, such as a gNB (gNodeB).
  • gNB gNodeB
  • the network device 190 may Including an evolved network device (eNodeB, eNB), in a wireless access network in Wideband Code Division Multiple Access (WCDMA), the network device 190 may include a Radio Network Controller (RNC) and NodeB, similarly, other wireless networks such as the Worldwide Interoperability for Microwave Access (WiMax) may also use a solution similar to the embodiment of the present invention, but the related modules may be different, and the embodiment of the present invention is not limited. .
  • eNodeB evolved network device
  • WCDMA Wideband Code Division Multiple Access
  • RNC Radio Network Controller
  • WiMax Worldwide Interoperability for Microwave Access
  • the user equipment 180 may also be referred to as a user equipment (Terminal Device), a mobile station (MS, Mobile Station), a mobile terminal (Mobile Terminal), etc., and the terminal may be wirelessly accessed.
  • the RAN Radio Access Network
  • the user equipment 180 may be a mobile phone (or "cellular" phone), a computer with communication function, etc., for example, the user device 180 It can be a portable, pocket, handheld, computer built-in or in-vehicle mobile device.
  • Symbols including but not limited to Orthogonal Frequency Division Multiplexing (OFDM) symbols, Sparse Code Multiplexing Access (SCMA) symbols, filtered Orthogonal Frequency Division Multiplexing (Filtered Orthogonal)
  • OFDM Orthogonal Frequency Division Multiplexing
  • SCMA Sparse Code Multiplexing Access
  • filtered Orthogonal Frequency Division Multiplexing Frtered Orthogonal
  • the frequency division multiplexing (F-OFDM) symbol and the non-orthogonal multiple access (NOMA) symbol may be determined according to actual conditions, and details are not described herein again.
  • Subcarrier width The smallest granularity in the frequency domain. For example, in LTE, the subcarrier width of one subcarrier is 15 kHz.
  • Frequency domain resource unit The resources of P consecutive subcarriers occupied in the frequency domain, and the size of resources occupied in the time domain is not particularly limited. Where P is a natural number greater than one. For example, one frequency domain resource unit can occupy 2, 4, 6, or 12 consecutive subcarriers.
  • Figure 1 is a schematic diagram of an initial access procedure. During the initial access process, the following information interactions may occur between the user device 180 and the network device 190:
  • Step 110 the user equipment 180 sends a preamble sequence (Preamble) to the network device 190, the preamble sequence is also referred to as a first message (Message 1);
  • Step 120 in response to the received preamble sequence, the network device 190 sends random access feedback information (RAR) to the user equipment 180, the RAR is also referred to as a second message (Message 2);
  • RAR random access feedback information
  • the common search space will be detected for a period of time to receive indication information indicating the RAR reception. If the RAR replied by the network device 190 is not received within the RAR time window, the random access procedure is considered to have failed.
  • Step 130 After receiving the RAR, the user equipment 180 sends uplink response information on the uplink data channel according to the information included in the RAR, where the uplink response information is also referred to as a third message (Message 3).
  • the user equipment 180 sends a third message on the time-frequency resource indicated in the uplink scheduling indication information according to the uplink scheduling indication information included in the received RAR, where the third message includes a radio resource control protocol (Radio Resource Control). , RRC) Connection Request, and at least need to carry temporary user equipment identification information, for example, a unique identifier assigned to each user equipment in a non-connected state.
  • RRC Radio Resource Control
  • Step 140 After transmitting the uplink response information, the user equipment 180 receives the feedback information sent by the network device 190 on the downlink data channel, where the feedback information is also referred to as a conflict feedback solution message or a fourth message (Message 4).
  • the feedback information is also referred to as a conflict feedback solution message or a fourth message (Message 4).
  • user equipment 180 can establish an RRC connection with network device 190.
  • the network device 190 cannot know the access bandwidth capability of the user equipment 180 and cannot allocate a dedicated working bandwidth to the user equipment 180, the user equipment 180 cannot learn the dedicated working frequency during the initial access. Domain resource information.
  • the user equipment can know the access bandwidth capability of the user equipment in time and establish the RRC connection with the network device, thereby reducing the access delay.
  • the initial access scenario is taken as an example.
  • the user equipment sends a Preamble request to the network device to establish an RRC connection
  • the method described in the embodiment of the present invention such as RRC re-establishment, is also applicable.
  • a scenario such as connecting or switching a user device from a source network device to a target network device.
  • FIG. 2 is a schematic flowchart of a resource indication method 200 for a control channel according to an embodiment of the present invention. As shown in FIG. 2, method 200 includes the following.
  • Step 210 The user equipment sends a preamble sequence, that is, Preamble or Message 1, to the network device.
  • the user equipment sends the Preamble to the base station to notify the network device that there is a random access request, and at the same time enables the network device to estimate the transmission delay between the network device and the user equipment and thereby calibrate the uplink timing.
  • the preamble sequence may be a Zadoff Chu sequence.
  • Step 220 The network device determines feedback information corresponding to the preamble sequence, where the feedback information is indicated by downlink control information carried by the common search space.
  • the time-frequency resource detected by the user equipment when determining the control channel includes the common search space and the user equipment-specific search space, and the feedback information includes frequency domain resource location information of the user equipment-specific search space, and the frequency domain resource location information.
  • the number of frequency domain resource units occupied by the user equipment-specific search space in the frequency domain and the location of the frequency domain resource unit are included.
  • the feedback information may be a second message, that is, RAR/Message 2 information, or the feedback information may be a fourth message, that is, Message 4 information. That is, in the present specification, the feedback information corresponding to the preamble sequence is not limited to the first feedback information received after the preamble sequence is transmitted.
  • the feedback information corresponding to the preamble sequence includes a second message, and the time-frequency resource location of the second message is indirectly bound to the preamble sequence.
  • the binding relationship is that the user equipment determines the indication information for receiving the RAR included in the common search space according to the sequence information of the transmission preamble sequence.
  • the indication information includes indication information for receiving a location of the RAR time-frequency resource, where the transmitted preamble sequence corresponds to a unique time-frequency resource indication information for receiving the RAR.
  • the feedback information corresponding to the preamble sequence includes a fourth message, where the fourth message includes user identity information of the user equipment, such as a Cell-Radio Network Temporary Identity (C-RNTI).
  • C-RNTI Cell-Radio Network Temporary Identity
  • the common search space is located in a first time-frequency resource, where the first time-frequency resource includes multiple first candidate control channels, and each of the plurality of first candidate control channels is configured as a first candidate control channel.
  • One or more frequency domain resource units are included, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in the second time-frequency resource, the second time-frequency resource includes multiple second candidate control channels, and each of the plurality of second candidate control channels is controlled by the second candidate.
  • the channel includes one or more frequency domain resource units, and the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first time-frequency resource are not Completely coincident.
  • the user equipment needs to detect time-frequency resources when determining the control channel. Specifically, the user equipment detects the common search space in the first time-frequency resource, and detects downlink control information sent by the network device in one or more first candidate control channels.
  • All of the time-frequency resources in the first time-frequency resource may be a common search space.
  • part of the time-frequency resources in the first time-frequency resource is a common search space of the user equipment.
  • the time-frequency resource where the common control channel is located is indicated by a broadcast message or a system message.
  • the user equipment receives the broadcast information, and determines the frequency domain location of the first time-frequency resource, including the number and location of the frequency domain resource units.
  • Step 230 The network device sends feedback information to the user equipment.
  • Step 240 The user equipment receives the feedback information by using an indication of a common search space, and determines frequency domain resource location information of the user-specific search space according to the feedback information.
  • the user equipment determines, according to the feedback information, a frequency domain location of the user-specific search space, where the frequency domain resource location information includes a quantity of the frequency domain resource unit occupied by the user equipment-specific search space in the frequency domain, and the The location of the frequency domain resource unit.
  • the user equipment-specific search space is located in the second time-frequency resource, the second time-frequency resource includes a plurality of second candidate control channels, and the set of the second candidate control channels constitutes a user equipment-specific search space.
  • the second time-frequency resource does not completely overlap with the first time-frequency resource. That is, the second time-frequency resource includes at least one frequency domain resource unit, and the frequency domain resource unit is not included in the first time-frequency resource.
  • the user equipment After confirming the user equipment-specific search space, the user equipment detects one or more second candidate control channels in the user equipment-specific search space as a dedicated control channel of the user equipment.
  • the network device causes the user equipment to determine the dedicated search space at the time of initial access by carrying the indication information of the dedicated search space in a feedback message of the preamble sequence, such as Message 2 or Message 4. And, different dedicated search space locations and sizes are determined for different user equipment bandwidth capabilities.
  • the method expands the control channel capacity, reduces the collision probability when the control channel is initially accessed, and reduces the access delay.
  • the frequency domain resource location information of the user equipment-specific search space further includes a mapping manner of the frequency domain resource.
  • the mapping manner of the user equipment-specific search space in the frequency domain is the mapping manner of the second candidate control channel in the user equipment-specific search space.
  • the mapping manner of the frequency domain resource may include a continuous mapping and a discrete mapping.
  • the frequency domain resource location information further includes a starting location of the frequency domain resource unit.
  • the frequency domain resources of the user equipment-specific search space are consecutive multiple frequency domain resource units.
  • the frequency domain resource location information further includes a location of the at least one frequency domain resource unit occupied by the user equipment-specific search space in the frequency domain.
  • the frequency domain resources of the control channel are discrete multiple frequency domain resource units.
  • the location of all frequency domain resource units can be obtained by knowing the location of one frequency domain resource unit; if the discrete frequency domain resource unit If it is irregularly distributed, it is necessary to know the location of all frequency domain resource units.
  • the feedback information of the preamble information further includes one or more of the following information: subcarrier width information of the user equipment-specific search space, and scrambling sequence information of the reference signal in the user equipment-specific search space, dedicated to the user equipment.
  • the aggregation level information of the search space and the transmission mode of the user equipment-specific search space are included in the feedback information of the preamble information.
  • the feedback information of the preamble sequence includes subcarrier width information for the user equipment specific search space.
  • the subcarrier width refers to the minimum granularity in the frequency domain
  • the subcarrier width used in the search space refers to the minimum granularity of the frequency domain resources used to transmit the control channel.
  • the user equipment search space of different user equipments may use different sub-carrier widths.
  • the subcarrier width used by the common search space of the same user equipment may also be different from the subcarrier width used by the user equipment specific search space. As shown in FIG. 5, the common search space uses a subcarrier width of 15 kHz, and the user equipment dedicated search space uses a subcarrier width of 30 kHz.
  • the feedback information of the preamble information includes scrambling code sequence information of the reference signal, and the scrambling code sequence of the reference signal is used to demodulate one or more second candidate control channels in the user equipment-specific search space.
  • a plurality of frequency domain resource units are included, and a reference signal for demodulating the user equipment-specific search space is included in each frequency domain resource unit.
  • the scrambling code sequence of the reference signal may be a Gold sequence, the initial value of the Gold sequence is different, and the generated scrambling code sequence is different.
  • the initial value can be calculated based on the user equipment ID included in the feedback information.
  • the user equipment ID may be a temporary user equipment ID fed back in the second message; or, the fourth message includes user identity information of the user equipment, such as a C-RNTI.
  • x 1 (n+31) (x 1 (n+3)+x 1 (n))mod2 (1)
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n)) mod2
  • the indication information in the information is determined, for example, And
  • the nID (n_SCID) has no predefined value related to the n_SCID, and the n_SCID is indicated by the random access feedback information.
  • the feedback information of the preamble sequence includes aggregation level information for the user equipment specific search space.
  • the aggregation level indicates the number of time-frequency resources of the control channel unit included in a search space.
  • the unit time-frequency resource includes a frequency domain resource unit in the frequency domain, and includes at least one OFDM symbol in the time domain.
  • the unit time-frequency resource includes at least 4 consecutive subcarriers in the frequency domain, and includes at least 1 OFDM symbol in the time domain; or the time-frequency resource unit includes 12 consecutive subcarriers in the frequency domain, At least 1 OFDM symbol is included in the time domain.
  • the aggregation level of the control channel is K.
  • K is a natural number greater than or equal to 1, for example, K is equal to 1, 2, 4, 8.
  • the aggregation level information includes the number of elements included in the aggregation level set of the user equipment-specific search space and/or the value of the aggregation level.
  • the search space aggregation level set is a set of aggregation levels.
  • the first set may be ⁇ 1, 2, 4, 8 ⁇ , and the number of elements in the set is 4, and the aggregation level is 1, 2, 4, or 8;
  • the second set may be ⁇ 1, 2 ⁇ , the number of elements in the collection is 2, and the aggregation level is 1 or 2.
  • the possible set of aggregation levels used in the user equipment-specific search space may be indirectly indicated by the time-frequency resource size of the user equipment-specific search space. If the time-frequency resource size of the control channel is greater than a predefined threshold, the aggregation level set of the control channel is a first set; and if the time-frequency resource size of the control channel is less than a predefined threshold, the control channel is The aggregation level set is the second set.
  • the set of set levels includes a first set ⁇ 1, 2, 4, 8 ⁇ , and a second set ⁇ 1, 2, if the time-frequency resources of the user equipment dedicated control channel include a control channel unit, the number of time-frequency resources is N, and when N is greater than the predefined threshold N0, the aggregation level set included in the time-frequency resource of the user equipment dedicated control channel is the first set ⁇ 1, 2, 4, 8 ⁇ ; if N is less than a predefined threshold The aggregation level set included in the time-frequency resource of the user equipment dedicated control channel is a second set ⁇ 1, 2 ⁇ .
  • the feedback information of the preamble information includes a transmission mode of the search space.
  • the transmission mode includes spatial diversity, a beamforming based transmission mode, or a multi-antenna based transmission mode.
  • the user equipment receives broadcast information, where the broadcast information includes a mapping manner for indicating a common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field.
  • the indication field is used to indicate the manner in which the common search space is mapped.
  • the scrambling code used by the broadcast information is used to indicate a mapping manner of the common search space.
  • the user equipment prior to step 210, the user equipment detects the synchronization signal and receives information of the broadcast channel. After receiving the broadcast channel information, the user equipment obtains the location of the common control channel time-frequency resource.
  • the location of the frequency domain resource occupied by the synchronization signal and the broadcast channel indirectly binds the resource location of the time-frequency resource set of the common search space.
  • the synchronization signal and the broadcast channel occupy N frequency domain resource units in the middle portion of the system bandwidth, and N is a natural number greater than or equal to 1, and is predefined.
  • N 6
  • the central location of the common search space is the same as the frequency domain center position occupied by the synchronization signal and the broadcast channel.
  • the size of the common search space is predefined, for example, 5 MHz or M frequency domain resource units, where M is a natural number greater than or equal to 1.
  • the broadcast information carried by the broadcast channel may include indication information for indicating the size of the common search space. For example, using 3-bit information, indicating the frequency domain width of the basic common search space, ⁇ 5MHz, 10MHz, 20MHz, 40MHz, 80Mhz ⁇ , or the number of occupied frequency domain resource units, ⁇ 25, 50, 100, 200, 400 ⁇ frequency domain resource units .
  • the M frequency domain resource units included in the common search space may be predefined consecutive multiple frequency domain resource units in the frequency domain;
  • the user equipment receives the information of the broadcast channel, determines the scrambling code sequence used for the broadcast channel transmission, and determines, according to the scrambling code sequence, the M frequency domain resource units included in the frequency domain of the basic resource unit are consecutive multiple frequency domain resource units. Discrete multiple frequency domain resource units.
  • the scrambling code sequence used for the broadcast channel transmission includes a first scrambling code sequence and a second scrambling code sequence; wherein the first scrambling code sequence corresponding to the search space includes a frequency domain resource unit that is a continuous frequency domain resource unit, The second scrambling code sequence corresponding to the search space includes the frequency domain resource unit as a discrete frequency domain resource unit.
  • the broadcast information in the broadcast channel further includes 1-bit indication information, where the indication information is used to indicate that the plurality of frequency domain resource units included in the common search space are consecutive multiple frequency domain resource units or discrete Multiple frequency domain resource units.
  • the network device determines feedback information corresponding to the preamble sequence.
  • the feedback information can be Message 2 or Message 4.
  • the feedback information sent by the network device is Message 2. That is, the feedback information further includes Timing Advance (TA) indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference with respect to the downlink transmission timing when the user equipment sends the uplink information.
  • TA Timing Advance
  • the sequence of preamble signals sent by the user equipment includes the access bandwidth capability of the user equipment.
  • the user equipment has different bandwidth capabilities, which means that the frequency domain width of the signal that the user equipment can receive or transmit is different due to the different frequency domain characteristics of the integrated device on the user equipment. For example, a user equipment employing a narrowband characteristic device cannot transmit/receive a signal having a bandwidth greater than the width of the frequency domain.
  • the frequency domain width of the user equipment receiving channel is mainly related to the specific device used by the user equipment, for example, the frequency domain filter, or the frequency domain width of the radio frequency antenna.
  • Some user equipments contain a frequency domain filter that can receive a large signal bandwidth, while some user equipments contain a frequency domain filter that can receive signals with a small bandwidth; or, some user equipment antenna modules have narrow bands.
  • the transmit and receive characteristics of some antenna devices on some user equipments have broadband transmit and receive characteristics.
  • Narrowband bandwidth and wideband bandwidth are relative concepts.
  • the size of the narrowband and the wideband can be as follows: a narrowband bandwidth of 5 MHz and a wideband bandwidth of 20 MHz; or a narrowband bandwidth of 20 MHz and a wideband bandwidth of 80 MHz.
  • the user equipment transmits a sequence of preamble signals to the network device.
  • the access signal capability of the user equipment may be included in the preamble sequence.
  • the network device may send feedback information of the preamble sequence through the RAR information or the Massage2 information.
  • the downlink control information indicating that the user equipment receives the feedback information is sent on the common search space, and is used to indicate the frequency domain resource location occupied by the feedback information.
  • the network device determines the access bandwidth capability of the user equipment when initially accessing.
  • the user-specific search space is allocated for the user equipment, the user equipment's access bandwidth capability can be considered. For example, when scheduling the frequency domain resources of Message 4, it can be performed in the user equipment-specific search space instead of in the public search space. This method expands the control channel capacity and reduces the collision probability of the initial access of the control channel.
  • the feedback information sent by the network device is high layer signaling. That is, the feedback message can be sent through Message 4.
  • the fourth message carries the unique flag to specify the winning user equipment. Other user equipments that do not win in the conflict resolution will re-initiate random access.
  • the network device after performing step 210, sends random access feedback information, that is, Message 2, to the user equipment.
  • the user equipment After receiving the Message 2, the user equipment sends an uplink response message, that is, Message3, to the network device, and the Message 3 includes the access bandwidth capability of the user equipment.
  • the network device carries the indication information of the control channel time-frequency resource in Message4, so that the user equipment determines the dedicated search space when initially accessing. Since the sending of Message 4 is after the Message 3 uplink response message, the user equipment can report the user bandwidth capability or other user capability information to the network device in more detail through the Message 3, and the user-specific search space information indicated by the network device through the Message 4 will more precise.
  • the method expands the control channel capacity by accurately configuring a dedicated search space for the user equipment. At the same time, since the frequency domain resource allocation of the user-specific search space is completed at the time of initial access, the collision probability of the initial access of the control channel is reduced, and the access delay is reduced.
  • the user equipment further determines a time-frequency resource location of the dedicated search space according to the feedback information.
  • the method 200 may further include the following steps:
  • Step 250 When the uplink synchronization of the user equipment fails, triggering retransmission of the preamble sequence signal.
  • the preamble sequence signal is the same as the preamble sequence signal in step 210, and details are not described herein again.
  • Step 260 The network device resends the corresponding feedback information according to the received preamble signal.
  • the feedback information is the same as the feedback information in step 220, and details are not described herein again.
  • Step 270 The user equipment reconfigures the user-specific search space according to the resent feedback information.
  • the user equipment can ensure that the frequency domain resource location of the user equipment-specific search space can also be obtained when the user equipment retransmits the preamble sequence to connect with the network device after the initial access competition fails.
  • the method 200 may further include the following steps:
  • Step 250' the network device sends high-level control information, such as RRC signaling, to the user equipment in the access state, where the high-layer control information includes frequency domain resource indication information indicating a user-specific search space.
  • high-level control information such as RRC signaling
  • Step 260' the user equipment configures the user equipment-specific search space according to the received RRC signaling.
  • the user equipment may update the user equipment-specific search space by receiving the RRC signaling sent by the network device after the RRC connection is successful.
  • the resource indication method of the control channel according to the embodiment of the present invention is described above with reference to FIG. 2 to FIG. 7.
  • the user equipment and the network equipment according to the embodiment of the present invention are described below with reference to FIG. 8 to FIG.
  • the user equipment 800 may correspond to the user equipment in the resource indication method 200 of the control channel according to the embodiment of the present invention, and the above and other operations and/or functions of the respective units in the user equipment 800.
  • the corresponding processes of the user equipment in the method 200 shown in FIG. 2 are respectively implemented. For brevity, details are not described herein again.
  • FIG. 8 is a schematic structural diagram of a user equipment 800 according to an embodiment of the present invention. As shown in FIG. 8, the user equipment 800 includes a transmitting unit 810, a processing unit 820, and a receiving unit 830.
  • the sending unit 810 is configured to send a sequence of preamble signals.
  • the receiving unit 830 is configured to receive the feedback information corresponding to the sequence of the preamble signal, where the feedback information is indicated by the downlink control information carried in the common search space, and the time-frequency resources detected by the user equipment when determining the control channel include The public search space and the user equipment specific search space.
  • the processing unit 820 is configured to determine, according to the feedback information, frequency domain resource location information of the user equipment-specific search space, where the frequency domain resource location information includes a frequency domain occupied by the user equipment-specific search space in a frequency domain. The number of resource units and the location of the frequency domain resource unit.
  • the common search space is located in a first time-frequency resource, where the first time-frequency resource includes multiple first candidate control channels, and each of the plurality of first candidate control channels is configured as a first candidate control channel.
  • One or more frequency domain resource units are included, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in the second time-frequency resource, the second time-frequency resource includes multiple second candidate control channels, and each of the second candidate control channels is selected.
  • the control channel includes one or more frequency domain resource units, and the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first time-frequency resource Not exactly coincident.
  • a first time-frequency resource a common search space, a relationship between a first candidate control channel and a plurality of time-frequency resource units, and a second time-frequency resource, a user-specific search space, a second candidate control channel, and a plurality of time-frequency resource units
  • a first time-frequency resource a common search space, a relationship between a first candidate control channel and a plurality of time-frequency resource units, and a second time-frequency resource, a user-specific search space, a second candidate control channel, and a plurality of time-frequency resource units
  • the feedback information further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit;
  • the frequency domain resource location further includes a location of at least one of the frequency domain resource units.
  • the feedback information further includes one or more of the following information: sub-carrier width information of the user equipment-specific search space, scrambling code sequence information of the reference signal in the user equipment-specific search space, and user equipment-specific search.
  • sub-carrier width information of the user equipment-specific search space scrambling code sequence information of the reference signal in the user equipment-specific search space
  • user equipment-specific search user equipment-specific search.
  • the scrambling code sequence of the reference signal is used to demodulate the one or more second candidate control channels in a user equipment specific search space of the user equipment.
  • the reference signal scrambling sequence refers to the description of the reference signal scrambling sequence in Method 200.
  • the aggregation level information includes an element number included in the aggregation level set of the user equipment-specific search space and a value of the aggregation level.
  • the aggregation level information includes an element number included in the aggregation level set of the user equipment-specific search space and a value of the aggregation level.
  • the related description of the aggregation level in Method 200 refer to the related description of the aggregation level in Method 200.
  • the feedback information further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the feedback information corresponding to the preamble sequence includes the second message.
  • the sequence of the preamble signal sent by the sending unit 810 includes the indication information for indicating an access bandwidth capability of the user equipment.
  • the user equipment can report the access bandwidth capability when initially accessing.
  • the network device allocates a user-specific search space for the user equipment, it can be considered based on the access bandwidth capability of the user equipment. For example, when scheduling the frequency domain resources of Message 4, it can be performed in the user equipment-specific search space instead of in the public search space. The probability of collision of the control channel when the user equipment is initially accessed is reduced, and an accurate search space dedicated to the user equipment can be obtained.
  • the feedback information is high layer signaling.
  • the feedback information corresponding to the preamble sequence includes the fourth message.
  • the sending unit 810 is further configured to send uplink response information, where the uplink response information includes access by the user equipment. Bandwidth capability.
  • the user equipment determines the dedicated search space at the time of initial access. Since the sending of Message 4 is after the Message 3 uplink response message, the user equipment can report the user bandwidth capability or other user capability information to the network device in more detail through the Message 3, and the user-specific search space information indicated by the network device through the Message 4 will more precise. By reporting the bandwidth capability of the user equipment during access, the user equipment can accurately learn the dedicated search space and expand the control channel capacity. At the same time, since the frequency domain resource allocation of the user-specific search space is completed at the time of initial access, the collision probability of the initial access of the control channel is reduced, and the access delay is reduced.
  • the receiving unit 830 is further configured to receive broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate a mapping manner of the common search space.
  • the indication field is used to indicate a mapping manner of the common search space
  • a scrambling code used by the broadcast information is used to indicate a mapping manner of the common search space.
  • FIG. 9 is a schematic structural diagram of a user equipment 900 according to another embodiment of the present invention.
  • user equipment 900 includes a processor 910, a receiver 920, a transmitter 930, and a memory 940.
  • the memory 940 can be used to store code and the like executed by the processor 910.
  • Transmitter 930 is configured to transmit signals under the control of processor 910.
  • Receiver 920 is configured to receive signals under the control of processor 1110.
  • the user equipment 900 according to the embodiment of the present invention may correspond to the user equipment in the resource indication method 200 of the control channel according to the embodiment of the present invention and the user equipment 800 according to the embodiment of the present invention, and each of the user equipments 800
  • the foregoing and other operations and/or functions of the unit are respectively implemented in order to implement the corresponding processes of the network device in the method 200 shown in FIG. 2, and are not described herein again for brevity.
  • FIG. 10 is a schematic structural diagram of a network device 1000 according to an embodiment of the present invention.
  • the network device 1000 includes a transmitting unit 1010, a processing unit 1020, and a receiving unit 1030.
  • the receiving unit 1030 is configured to receive a sequence of preamble signals sent by the user equipment.
  • the processing unit 1020 is configured to determine feedback information corresponding to the sequence of the preamble signal, where the feedback information is indicated by downlink control information carried by the common search space, and the time-frequency resource detected by the user equipment when determining the control channel includes a common search space and a user equipment-specific search space, the feedback information is used to indicate frequency domain resource location information of the user equipment-specific search space, and the frequency domain resource location information includes the user equipment-specific search space in a frequency domain The number of frequency domain resource units occupied and the location of the frequency domain resource unit;
  • the sending unit 1010 is configured to send the feedback information.
  • the common search space is located in a first time-frequency resource, where the first time-frequency resource includes multiple first candidate control channels, and each of the plurality of first candidate control channels is configured as a first candidate control channel.
  • One or more frequency domain resource units are included, and the common search space is a set of the plurality of first candidate control channels.
  • the user equipment-specific search space is located in a second time-frequency resource, the second time-frequency resource includes multiple second control channels, and each of the multiple second candidate control channels is controlled by a second candidate.
  • the channel includes one or more frequency domain resource units, and the user equipment-specific search space is a set of the plurality of second candidate control channels, wherein the second time-frequency resource and the first time-frequency resource are not Completely coincident.
  • a first time-frequency resource a common search space, a relationship between a first candidate control channel and a plurality of time-frequency resource units, and a second time-frequency resource, a user-specific search space, a second candidate control channel, and a plurality of time-frequency resource units
  • a first time-frequency resource a common search space, a relationship between a first candidate control channel and a plurality of time-frequency resource units, and a second time-frequency resource, a user-specific search space, a second candidate control channel, and a plurality of time-frequency resource units
  • the feedback information further includes a mapping manner of the user equipment-specific search space in a frequency domain, where the mapping manner includes a continuous mapping and a discrete mapping.
  • the frequency domain resource location further includes start location information of the frequency domain resource unit;
  • the frequency domain resource location further includes a location of at least one of the frequency domain resource units.
  • the feedback information further includes one or more of the following information: sub-carrier width information of the user equipment-specific search space, scrambling code sequence information of the reference signal in the user equipment-specific search space, and user equipment-specific search.
  • sub-carrier width information of the user equipment-specific search space scrambling code sequence information of the reference signal in the user equipment-specific search space
  • user equipment-specific search user equipment-specific search.
  • the scrambling code sequence of the reference signal is used to demodulate the one or more second candidate control channels in the user equipment-specific search space of the user equipment.
  • the reference signal scrambling sequence in Method 200 refer to the description of the reference signal scrambling sequence in Method 200.
  • the aggregation level information includes an element number included in the aggregation level set of the user equipment-specific search space and a value of the aggregation level.
  • the aggregation level information includes an element number included in the aggregation level set of the user equipment-specific search space and a value of the aggregation level.
  • the related description of the aggregation level in Method 200 refer to the related description of the aggregation level in Method 200.
  • the feedback information further includes timing advance indication information of the uplink transmission, where the timing advance indication information is used to indicate a time difference relative to the downlink transmission timing when the user equipment sends the uplink information.
  • the feedback information corresponding to the preamble sequence includes the second message.
  • the sequence of the preamble signal received by the receiving unit 1030 includes the indication information for indicating an access bandwidth capability of the user equipment.
  • the network device can obtain the access bandwidth capability of the user equipment during the initial access by carrying the indication information of the control channel time-frequency resource in the Message 2.
  • the network device allocates a user-specific search space for the user equipment, it can be considered based on the access bandwidth capability of the user equipment. For example, when scheduling the frequency domain resources of Message 4, it can be performed in the user equipment-specific search space instead of in the public search space. This method expands the control channel capacity and reduces the collision probability of the initial access of the control channel.
  • the feedback information is high layer signaling.
  • the feedback information corresponding to the preamble sequence includes the fourth message.
  • the receiving unit 1030 is further configured to receive uplink response information, where the uplink response information includes access by the user equipment. Bandwidth capability.
  • the network device carries the indication information of the control channel time-frequency resource in Message4, so that the user equipment determines the frequency domain resource of the dedicated search space when initially accessing. Since the sending of Message 4 is after the Message 3 uplink response message, the user equipment can report the user bandwidth capability or other user capability information to the network device in more detail through the Message 3, and the user-specific search space information indicated by the network device through the Message 4 will more precise.
  • the network device expands the control channel capacity by accurately configuring a dedicated search space for the user equipment.
  • the network device can complete the frequency domain resource allocation of the user-specific search space when the initial access is performed, which reduces the collision probability of the initial access of the control channel and reduces the access delay.
  • the sending unit is further configured to send broadcast information, where the broadcast information includes a mapping manner for indicating the common search space, where the mapping manner includes a discrete mapping and a continuous mapping.
  • the broadcast information includes an indication field, where the indication field is used to indicate a mapping manner of the common search space, or a scrambling code used by the broadcast information is used to indicate a mapping manner of the common search space.
  • the indication field is used to indicate a mapping manner of the common search space
  • a scrambling code used by the broadcast information is used to indicate a mapping manner of the common search space.
  • the network device 1000 may correspond to the network device in the configuration method 200 of the control channel according to the embodiment of the present invention, and the above and other operations and/or functions of the respective units in the network device 1000 are respectively In order to implement the corresponding process of the network device in the method 200 shown in FIG. 2, for brevity, details are not described herein again.
  • FIG. 11 is a schematic structural diagram of a network device 1100 according to another embodiment of the present invention.
  • the user equipment 1100 includes a processor 1110, a receiver 1120, a transmitter 1130, and a memory 1140.
  • the memory 1140 can be used to store code and the like executed by the processor 1110.
  • Receiver 1120 is for receiving signals under the control of processor 1110.
  • Transmitter 1130 is operative to transmit signals under the control of processor 1110.
  • the network device 1100 according to the embodiment of the present invention may correspond to the network device in the resource indication method 200 of the control channel according to the embodiment of the present invention and the network device 1000 according to the embodiment of the present invention, and each of the network devices 1100
  • the foregoing and other operations and/or functions of the unit are respectively implemented in order to implement the corresponding processes of the network device in the method 200 shown in FIG. 2, and are not described herein again for brevity.
  • a power bus in addition to the data bus, a control bus, and a status signal bus may be included.
  • the memory in each of the above embodiments may include a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory, such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the memory may further include a combination of the above types of memories.
  • RAM random-access memory
  • non-volatile memory such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD)
  • the memory may further include a combination of the above types of memories.
  • the processor in each of the above embodiments may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP.
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the embodiments of the present invention, or the part contributing to the prior art or the part of the technical solution, may be embodied in the form of a software product stored in a storage medium.
  • a number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Abstract

本发明实施例提供了一种控制信道的资源指示方法、用户设备和网络设备，该方法包括：用户设备发送前导信号序列；用户设备接收所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示，所述用户设备确定控制信道时检测的时频资源包括所述公共搜索空间和用户设备专用搜索空间；用户设备根据所述高层信令确定所述用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。

Description

控制信道的资源指示方法、用户设备和网络设备
本申请要求在2016年12月30日提交国家专利局、申请号为201611263794.6、发明名称为“控制信道的资源指示方法、用户设备和网络设备”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
本发明涉及通信领域，尤其涉及控制信道的资源配置方法、网络设备和用户设备。
背景技术
通信系统中，网络设备需要向用户设备指示控制信道的时频资源。当前技术中，是由广播信道承载该控制信道时频资源的指示信息。具体的，网络设备通过物理广播信道(Physical Broadcast Channel，PBCH)中携带的指示信息，指示控制信道频域资源的大小；在物理控制格式指示信道(Physical Control Format Indicator Channel，PCFICH)中携带控制信道时域资源的大小。
下一代通信系统支持多种不同带宽宽度的用户设备接入，每个用户设备所能检测的信道的带宽宽度不同。若沿用当前设计方案，由于PBCH是公共信令，无法为每个用户设备分配专用的工作带宽，所以用户设备无法在与网络设备建立连接时就获知自己专用的工作频域资源信息。
发明内容
本发明实施例提供了一种控制信道的资源指示方法、网络设备和用户设备，能够在初始接入阶段为用户设备指示控制信道所在搜索空间的频域资源位置。
第一方面，提供了一种控制信道的资源指示方法，包括：发送前导信号序列；接收所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
本发明实施例中，在前导信号序列或者第三消息中发送接入带宽能力消息，可在高层信令，例如Message 2或者Message 4中接收专用搜索空间的指示信息，使得用户设备在初始接入时确定了专用搜索空间。并且，针对不同用户设备带宽能力，确定不同专用搜索空间位置和大小。所述方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频 资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和/或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述用户设备发送的所述前导信号序列包括所述用于指示所述用户设备的接入带宽能力的指示信息。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在发送所述前导信号序列之后，接收所述高层信令之前，所述方法还包括：发送上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第二方面，提供了一种控制信道的资源指示方法，包括：接收用户设备发送的前导信号序列；确定所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；发送所述高层信令。
本发明实施例中，在高层信令，例如Message 2或者Message 4中接收专用搜索空间的指示信息，使得用户设备在初始接入时确定了专用搜索空间。并且，针对不同用户设备带宽能力，确定不同专用搜索空间位置和大小。所述方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述接收的所述前导信号序列包括所述用于指示所述用户设备的接入带宽能力的指示信息。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在接收所述前导信号序列之后，发送所述高层信令之前，所述方法还包括：接收上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述方法还包括：发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第三方面，提供了一种控制信道的资源指示方法，包括：接收高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
本发明实施例中，可在高层信令，例如Message 2或者Message 4中接收专用搜索空间的指示信息，使得用户设备在初始接入时确定了专用搜索空间。并且，针对不同用户设备带宽能力，确定不同专用搜索空间位置和大小。所述方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和/或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在接收所述高层信令之前，所述方法还包括：发送上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第四方面，提供了一种控制信道的资源指示方法，包括：确定高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间 在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；发送所述高层信令。
本发明实施例中，在高层信令，例如Message 2或者Message 4中接收专用搜索空间的指示信息，使得用户设备在初始接入时确定了专用搜索空间。并且，针对不同用户设备带宽能力，确定不同专用搜索空间位置和大小。所述方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在发送所述高层信令之前，所述方法还包括：接收上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述方法还包括：发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第五方面，提供了一种用户设备，包括：发送单元，用于发送前导信号序列；接收单 元，用于接收所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；处理单元，用于根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
用户设备在初始接入时上报用户设备接入带宽能力，在初始接入阶段即可确定适合自己带宽接入能力的专用搜索空间。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述发送单元发送的所述前导信号序列包括所述用于指示用户设备的接入带宽能力的指示信息。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在所述发送单元发送所述前导信号序列之后，所述接收单元接收所述高层信令之前，所述发送单元还用于发送上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述接收单元还用于接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第六方面，提供了一种网络设备，包括：接收单元，用于接收用户设备发送的前导信号序列；处理单元，用于确定所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；发送单元，用于发送所述高层信令。
网络设备在初始接入时接收用户设备接入带宽能力，即可根据该接入带宽能力在初始接入阶段发送高层信令，用于指示匹配用户设备接入带宽能力的专用搜索空间。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述接收单元接收的所述前导信号序列包括所述用于指示所述用户设备的接入带宽能力的指示信息。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，在所述接收单元接收所述前导信号序列之后，所述发送单元发送所述高层信令之前，所述接收单元还用于接收上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述发送单元还用于发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第七方面，提供了一种用户设备，包括：接收单元，用于接收高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；处理单元，用于根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
用户设备在初始接入时上报用户设备接入带宽能力，在初始接入阶段即可确定适合自己带宽接入能力的专用搜索空间。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控 制协议(RRC)信令。
在一种可能的设计中，所述用户设备还包括：发送单元，用于在所述接收单元接收所述高层信令之前发送上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述接收单元还用于接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第八方面，提供了一种网络设备，包括：处理单元，用于确定高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；发送单元，用于发送所述高层信令。
网络设备在初始接入时接收用户设备接入带宽能力，即可根据该接入带宽能力在初始接入阶段发送高层信令，用于指示匹配用户设备接入带宽能力的专用搜索空间。
在一种可能的设计中，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
在一种可能的设计中，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
在一种可能的设计中，所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
在一种可能的设计中，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的设计中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
在一种可能的设计中，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
在一种可能的设计中，所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
在一种可能的设计中，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在一种可能的设计中，所述高层信令为随机接入反馈信息(RAR)信令或无线资源控制协议(RRC)信令。
在一种可能的设计中，所述网络设备还包括：接收单元，用于在所述发送单元发送所述高层信令之前接收上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
在一种可能的设计中，所述发送单元还用于发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
在一种可能的设计中，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
第九方面，提供了一种用户设备，包括：处理器、接收器、存储器和总线系统，处理器、接收器和存储器通过总线系统相连，存储器用于存储指令或代码，处理器用于执行该存储器存储的指令或代码，使得用户设备执行如第一方面或第一方面的任一种可能的实现方式或者第三方面或第三方面的任一种可能的实现方式所述的方法。
第十方面，提供了一种网络设备，包括：处理器、发送器和存储器。存储器用于存储指令或代码，处理器用于执行该存储器存储的指令或代码，使得网络设备执行如第二方面或第二方面的任一种可能的实现方式或者第四方面或第四方面的任一种可能的实现方式所述的方法。
第十一方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有程序，该程序使得用户设备执行上述第一方面或第一方面的任一种可能的实现方式或者第三方面或第三方面的任一种可能的实现方式所述的方法。
第十二方面，提供了一种计算机可读存储介质，该计算机可读存储介质存储有程序，该程序使得网络设备执行上述第二方面或第二方面的任一种可能的实现方式或者第四方面或第四方面的任一种可能的实现方式所述的方法。
第十三方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当所述计算机程序代码被用户设备运行时，使得所述用户设备执行上述第一方面或第一方面的任一种可能的实现方式或者第三方面或第三方面的任一种可能的实现方式所述的方法。
第十四方面，提供了一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当所述计算机程序代码被网络设备运行时，使得网络设备执行上述第二方面或第二方面的任一种可能的实现方式或者第四方面或第四方面的任一种可能的实现方式所述的方法。
第十五方面，提供了一种控制信道的资源指示装置，其特征在于，所述装置包括至少一个处理器和至少一个存储介质，所述至少一个存储介质存储有指令，所述指令被所述处理器运行时，使得所述处理器执行上述第一方面或第一方面的任一种可能的实现方式、第二方面或第二方面的任一种可能的实现方式、第三方面或第三方面的任一种可能的实现方式、或者第四方面或第四方面的任一种可能的实现方式所述的方法。
第十六方面，提供了一种通信系统，该通信系统包括上述第五方面或第五方面的任一种可能的实现方式、第七方面或第七方面的任一种可能的实现方式或者第九方面所述的用户装置，以及上述第六方面或第六方面的任一种可能的实现方式、第八方面或第八方面的任一种可能的实现方式或者第十方面所述的网络设备。
附图说明
图1是初始接入过程的示意图；
图2是根据本发明实施例的控制信道的资源指示方法的示意性流程图；
图3是根据本发明实施例的公共搜索空间和用户专用搜索空间的结构示意图；
图4(a)是根据本发明实施例的频域资源单元连续分布的搜索空间的结构示意图；
图4(b)是根据本发明实施例的频域资源单元离散分布的搜索空间的结构示意图；
图5是根据本发明实施例的子载波宽度的结构示意图；
图6是根据本发明实施例的搜索空间的参考信号的结构示意图；
图7是根据本发明实施例的搜索空间聚合级别的示意图；
图8是根据本发明实施例的用户设备的结构示意图；
图9是根据本发明另一实施例的用户设备的结构示意图；
图10是根据本发明实施例的网络设备的结构示意图；
图11是根据本发明是另一实施例的网络设备的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行描述。
应理解，本发明实施例的的技术方案可以应用于各种通信系统，例如：无线保真(wifi)、全球微波互联接入(Worldwide Interoperability for Microwave Access，WiMAX)、全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、先进的长期演进(Advanced long term evolution，LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)、以及第三代合作伙伴计划(The 3rd Generation Partnership Project，3GPP)相关的蜂窝系统等，以及第五代移动通信系统(The Fifth Generation Mobile Telecommunication System,5G)。本发明实施例并不限定。
应理解，在本发明实施例中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
本发明实施例中的“第一”、“第二”只是用于区分，不代表先后或大小的含义。
如图1所示，通信系统包括用户设备(用户设备，User Equipment)180和网络设备190。
本发明实施例可以用于不同的制式的无线网络。因此，网络设备190在不同的无线通信系统中可包括不同的网元。例如，在第五代移动通信系统中网络设备190可为5G网络设备，如gNB(gNodeB)，在长期演进(Long Term Evolution，LTE)和LTE-A中无线接入网络中，网络设备190可包括演进型网络设备(eNodeB，eNB)，在宽带码分多址(Wideband Code Division Multiple Access，WCDMA)中无线接入网络中，网络设备190可包括无线网络控制器(Radio Network Controller，RNC)和NodeB，类似地，全球微波互联接入(Worldwide Interoperability for Microwave Access，WiMax)等其它无线网络也可以使用与本发明实施例类似的方案，只是相关模块可能有所不同，本发明实施例并不限定。
还应理解，在本发明实施例中，用户设备180也可称之为用户设备(Terminal Device)、移动台(MS，Mobile Station)、移动终端(Mobile Terminal)等，该终端可以经无线接入网(RAN，Radio Access Network)与一个或多个核心网进行通信，例如，用户设备180可以是移动电话(或称为“蜂窝”电话)、具有通信功能的计算机等，例如，用户设备180还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
以下，对本申请中的部分用语进行解释说明，以便于本领域技术人员理解。
1)符号，包含但不限于正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)符号、稀疏码分多址技术(Sparse Code Multiplexing Access，SCMA)符号、过滤正交频分复用(Filtered Orthogonal Frequency Division Multiplexing，F-OFDM)符号、非正交多址接入(Non-Orthogonal Multiple Access，NOMA)符号，具体可以根据实际情况确定，在此不再赘述。
2)子载波宽度：频域上最小的粒度。例如，LTE中，1个子载波的子载波宽度为15kHZ。
3)频域资源单元：频域上占用的P个连续的子载波的资源，在时域上占用的资源大小不做特殊限定。其中P为大于1的自然数。例如，一个频域资源单元可占用2个、4个、6个或12个连续的子载波。
图1为初始接入过程的示意图。在初始接入过程中，用户设备180与网络设备190之间可发生以下信息交互：
步骤110，用户设备180向网络设备190发送前导信号序列(Preamble)，该前导信号序列也被称为第一消息(Message 1)；
步骤120，响应于接收到的前导信号序列，网络设备190向用户设备180发送随机接入反馈信息(Random Access Response,RAR)，该RAR也被称为第二消息(Message 2)；
用户设备180发送了preamble之后，将在一段时间内检测公共搜索空间，以接收指示RAR接收的指示信息。如果在此RAR时间窗内没有接收到网络设备190回复的RAR，则认为此次随机接入过程失败。
步骤130，用户设备180在接收到RAR之后，根据RAR中包括的信息，在上行数据信道上发送上行应答信息，所述上行应答信息也被称为第三消息(Message 3)；
用户设备180根据接收到的RAR中包括的上行调度指示信息，在所述上行调度指示信息中所指示的时频资源上发送第三消息，所述第三消息包括无线资源控制协议(Radio Resource Control,RRC)连接请求(Connection Request)，且至少需要携带临时用户设备标识信息，例如，在非连接状态下分配给每个用户设备的唯一标识。
步骤140，用户设备180在发送上行应答信息后，接收网络设备190在下行数据信道发送的反馈信息，所述反馈信息也被称为冲突反馈解决消息，或第四消息(Message 4)。
通过交互以上消息，用户设备180可与网络设备190建立RRC连接。
但是，在初始接入中，由于网络设备190无法得知用户设备180的接入带宽能力，无法为用户设备180分配专用的工作带宽，所以用户设备180无法在初始接入时获知专用的工作频域资源信息。
通过本发明实施例所描述的方法，用户设备在与网络设备建立RRC连接的过程中，即可及时获知用户设备的接入带宽能力，降低了接入延时。
应当理解的是，此处是以初始接入场景为例，其他类似场景中，若出现用户设备向网 络设备发送Preamble请求建立RRC连接，也适用本发明实施例所描述的方法，例如RRC重新建立连接，或者将用户设备从源网络设备向目标网络设备切换等场景。
图2是根据本发明实施例的控制信道的资源指示方法200的示意性流程图。如图2所示，方法200包括如下内容。
步骤210，用户设备向网络设备发送前导信号序列，也即Preamble或Message 1。
用户设备发送Preamble给基站，通知网络设备有一个随机接入请求，同时使得网络设备能估计其与用户设备之间的传输时延并以此校准上行定时。
可选的，所述前导信号序列可以为Zadoff Chu序列。
步骤220，网络设备确定该前导信号序列对应的反馈信息，该反馈信息由公共搜索空间承载的下行控制信息所指示。所述用户设备确定控制信道时检测的时频资源包括所述公共搜索空间和用户设备专用搜索空间，所述反馈信息包括用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
可选的，该反馈信息可为第二消息，即RAR/Message 2信息，或者，该反馈信息可为第四消息，即Message 4信息。即在本说明书中，不限制前导信号序列对应的反馈信息为发送完前导信号序列后，接收到的第一个反馈信息。
情况一，前导信号序列对应的反馈信息包括第二消息，接收所述第二消息的时频资源位置与前导信号序列存在间接绑定关系。所述绑定关系为，用户设备根据发送前导信号序列的序列信息，确定公共搜索空间中包括的用于接收RAR的指示信息。所述指示信息包括接收RAR时频资源位置的指示信息，所述发送的前导信号序列对应唯一个接收RAR的时频资源指示信息。
情况二，前导信号序列对应的反馈信息包括第四消息，该第四消息包括用户设备的用户身份信息，例如小区无线网络临时标识(Cell-Radio Network Temporary Identity，C-RNTI)。
可选的，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
另外可选的，用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
如图3所示，用户设备在确定控制信道时需进行时频资源的检测。具体地，用户设备在第一时频资源中的公共搜索空间检测，在一个或多个第一候选控制信道中检测网络设备发送的下行控制信息。
第一时频资源中的全部时频资源可以都为公共搜索空间，或者，如图3所示，第一时频资源中的部分时频资源为用户设备的公共搜索空间。
可选的，公共控制信道所在的时频资源，即第一时频资源，由广播消息或者系统消息指示。
例如，在步骤210之前，用户设备接收广播信息，确定第一时频资源的频域位置，其中包括频域资源单元的数量和位置。
步骤230，网络设备向用户设备发送反馈信息。
步骤240，用户设备通过公共搜索空间的指示，接收反馈信息，并根据反馈信息确定用户专用搜索空间的频域资源位置信息。
可选的，用户设备根据反馈信息确定用户专用搜索空间的频域位置，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
如图3所示，用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，第二候选控制信道的集合构成用户设备专用搜索空间。
可选的，所述第二时频资源与所述第一时频资源不完全重合。也即，所述第二时频资源包括至少一个频域资源单元，所述频域资源单元不包含在所述第一时频资源中。
可选的，用户设备在确认用户设备专用搜索空间后，在用户设备专用搜索空间中检测一个或多个第二候选控制信道作为用户设备的专用控制信道。
网络设备通过在前导信号序列的反馈消息，例如Message 2或者Message 4中携带专用搜索空间的指示信息，使得用户设备在初始接入时确定了专用搜索空间。并且，针对不同用户设备带宽能力，确定不同专用搜索空间位置和大小。所述方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
可选的，用户设备专用搜索空间的频域资源位置信息还包括所述频域资源的映射方式。换言之，用户设备专用搜索空间在频域上的映射方式为用户设备专用搜索空间中的第二候选控制信道的映射方式。如图4所示，该频域资源的映射方式可包括连续映射和离散映射。
情况一，当频域资源的映射方式为连续映射时，频域资源位置信息还包括所述频域资源单元的起始位置。如图4(a)所示，用户设备专用搜索空间的频域资源为连续的多个频域资源单元。
情况二，当频域资源的映射方式为离散映射时，频域资源位置信息还包括用户设备专用搜索空间在频域上所占的至少一个频域资源单元的位置。如图4(b)所示，控制信道的频域资源为离散的多个频域资源单元。
此种情况下，若离散的频域资源单元为有规律分布的，例如等间隔分布，则获知一个频域资源单元的位置即可获知全部频域资源单元的位置；若离散的频域资源单元为无规律分布的，则需要获知全部频域资源单元的位置。
可选的，前导信息的反馈信息还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种实现方式中，前导信号序列的反馈信息包括用户设备专用搜索空间的子载波宽度信息。子载波宽度是指频域上的最小粒度，搜索空间使用的子载波宽度是指发送控制信道所用的频域资源的最小粒度。可选的，不同的用户设备的用户设备搜索空间可使用不同的子载波宽度。同一用户设备的公共搜索空间使用的子载波宽度与用户设备专用搜索空间所使用的子载波宽度也可以不同。如图5所示，公共搜索空间使用的子载波宽度为15kHZ，用户设备专用搜索空间所使用的子载波宽度为30kHZ。
在一种实现方式中，前导信息的反馈信息包括参考信号的扰码序列信息，该参考信号的扰码序列用于解调所述用户设备专用搜索空间中的一个或多个第二候选控制信道。
如图6所示，在用户设备专用搜索空间内，包括多个频域资源单元，且在每个频域资源单元内包括用于解调该用户设备专用搜索空间的参考信号。
可选的，参考信号的扰码序列可为Gold序列，Gold序列的初始值不同，所产生的扰码序列不同。根据在反馈信息内包括的用户设备ID可以计算出所述初始值。该用户设备ID可以为第二消息中反馈的临时的用户设备ID；或者，为第四消息中包括用户设备的用户身份信息，例如C-RNTI。
Gold序列可由c(n)进行表示，所生成的序列长度可记为MPN，其中，n＝0,1,…,MPN-1。
c(n)＝(x 1(n+N C)+x 2(n+N C))mod2
x 1(n+31)＝(x 1(n+3)+x 1(n))mod2                 (1)
x 2(n+31)＝(x 2(n+3)+x 2(n+2)+x 2(n+1)+x 2(n))mod2
其中，NC为一个预定义的值，参考现有技术方法，NC＝1600；其中初始序列包括第一初始序列，x1(n)，n＝0,1,…,30，和第二初始序列,x2(n),n＝0,1,…,30；
其中，所述第一初始序列可以为预定义的序列，例如：x1(0)＝1，x1(n)＝0，n＝1,…,30；所述第二初始序列根据随机接入反馈信息中的指示信息确定，例如，
Figure PCTCN2017120221-appb-000001
且
Figure PCTCN2017120221-appb-000002
其中,nID(n_SCID)未预定义的与n_SCID有关的取值，而n_SCID通过随机接入反馈信息进行指示。
在一种实现方式中，前导信号序列的反馈信息包括用户设备专用搜索空间的聚合等级信息。聚合等级表示一个搜素空间包括的控制信道单位时频资源的数量。所述单位时频资源在频域上包括一个频域资源单元，在时域上包括至少一个OFDM符号。例如，单位时频资源在频域上包括至少4个连续的子载波，在时域上包括至少1个OFDM符号；或者，所述时频资源单元在频域上包括12连续的子载波，在时域上包括至少1个OFDM符号。
如果所述控制信道占用的时频资源包括K个控制信道时频资源，则所述控制信道的聚合等级为K。其中，K为大于等于1的自然数，例如K等于1，2，4，8。
可选的，该聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和/或所述聚合等级的取值。
其中，搜索空间聚合等级集合为聚合等级所组成的集合。例如第一集合可以为{1,2,4,8}，此时该集合中的元素数量为4，聚合等级的取值为1，2,4或8；例如第二集合可为{1,2}，此时该集合中的元素数量为2，聚合等级的取值为1或2。
可选的，所述用户设备专用搜索空间内所使用的聚合等级的可能集合，可由用户设备专用搜索空间的时频资源大小间接指示。若控制信道的时频资源大小大于一个预定义的阈值，则所述控制信道的聚合等级集合为第一集合；若控制信道的时频资源大小小于一个预定义的阈值，则所述控制信道的聚合等级集合为第二集合。
例如，集合等级集合包括第一集合{1,2,4,8}，和第二集合{1,2，若所述用户设备专用控制信道的时频资源包括的控制信道单位时频资源数量为N，且N大于预定义的阈值N0时，所述用户设备专用控制信道的时频资源所包括的聚合等级集合为第一集合{1,2,4,8}；若N小 于预定义的阈值时，所述用户设备专用控制信道的时频资源所包括的聚合等级集合为第二集合{1,2}。
在一种实现方式中，前导信息的反馈信息包括搜索空间的传输模式。所述传输模式包括空间分集，基于波束成型的发送模式，或基于多天线的传输方式。
可选的，在步骤210之前，用户设备接收广播信息，所述广播信息包括用于指示公共搜索空间的映射方式，该映射方式包括离散映射和连续映射。
可选的，广播信息包括指示字段。该指示字段用于指示所述公共搜索空间的映射方式。或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
例如，在步骤210之前，用户设备检测同步信号，并接收广播信道的信息。用户设备在接收到广播信道信息后，获得公共控制信道时频资源的位置。
在一种可能的情况中，同步信号和广播信道所占用的频域资源位置间接绑定了公共搜索空间的时频资源集合的资源位置。例如，同步信号和广播信道占用系统带宽中间部分的N个频域资源单元，N为大于等于1的自然数，且为预定义的。例如，在LTE中，N＝6，公共搜索空间的中心位置与同步信号和广播信道所占用的频域中心位置相同。
可选的，公共搜索空间的大小为预定义的，例如，5MHz或M个频域资源单元，其中M为大于等于1的自然数。
或者可选的，广播信道承载的广播信息中可包括指示信息，用于指示公共搜索空间的大小。例如，采用3比特信息，指示基本公共搜索空间的频域宽度，{5MHz，10MHz，20MHz，40MHz，80Mhz}，或占用的频域资源单元的个数，{25,50,100,200,400}个频域资源单元。
公共搜索空间包括的M个频域资源单元在频域上可为预定义的连续的多个频域资源单元；或者，
用户设备接收广播信道的信息，确定广播信道传输所使用的扰码序列，根据扰码序列确定，基本资源单元在频域上包括的M个频域资源单元为连续的多个频域资源单元还是离散的多个频域资源单元。
例如，广播信道传输所示用的扰码序列包括，第一扰码序列和第二扰码序列；其中第一扰码序列对应搜索空间包括的频域资源单元为连续的频域资源单元，第二扰码序列对应搜索空间包括频域资源单元为离散的频域资源单元。
或者可选的，广播信道中的广播信息，还包含1比特指示信息，所述指示信息用于指示公共搜索空间中，包括的多个频域资源单元为连续的多个频域资源单元或离散的多个频域资源单元。
如前文所述，在步骤220中，网络设备确定前导信号序列对应的反馈信息。该反馈信息可以为Message 2或是Message 4。
在一种可能的情形中，该网络设备发送的反馈信息为Message 2。也即，该反馈信息还包括上行传输的定时提前(Timing Advance,TA)指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
在此种情形下，用户设备发送的前导信号序列包括用户设备的接入带宽能力。
用户设备具有不同的带宽能力，是指由于用户设备上集成器件的频域特性不同导致用户设备所能够接收或发送信号的频域宽度不同。例如，采用窄带特性器件的用户设备无法发射/接收带宽大于所述频域宽度大小的信号。
用户设备接收信道的频域宽度主要与用户设备所使用的具体器件有关，例如，频域滤波器，或者射频天线的频域宽度。
有些用户设备所包含的频域滤波器的所能接收的信号带宽大，而有些用户设备所包含的频域滤波器所能接收的信号的带宽小；或者，有些用户设备上的天线模块具有窄带的发射和接收特性，而有些用户设备上的天线模块具有宽带的发射和接收特性。窄带带宽和宽带带宽是相对的概念。举例来说，窄带和宽带的大小的可如下所述：窄带带宽为5MHz，宽带带宽为20MHz；或者，窄带带宽为20MHz，宽带带宽为80MHz。
在步骤210中，用户设备向网络设备发送前导信号序列。如上述可选方案所述，该前导信号序列中可包括用户设备的接入带宽能力。此时，网络设备可通过RAR信息或Massage2信息发送前导信号序列的反馈信息。
例如，网络设备确定用户设备的接入带宽能力之后，在公共搜索空间上，发送指示用户设备接收反馈信息的下行控制信息，用于指示反馈信息所占用的频域资源位置。
通过在Message2中携带控制信道时频资源的指示信息，使得网络设备在初始接入时即确定了用户设备的接入带宽能力。并可在为用户设备分配用户专用搜索空间时，可以基于用户设备的接入带宽能力进行考虑。例如，调度Message 4的频域资源时就可以在用户设备专用搜索空间进行，而不用放在公共搜索空间。此方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率。
在另一种可能的实现方式中，该网络设备发送的反馈信息为高层信令。也即，该反馈消息可以通过Message 4进行发送。
在网络设备冲突解决机制中，所述第四消息携带该唯一的标志以指定胜出的用户设备。而其它没有在冲突解决中胜出的用户设备将重新发起随机接入。
在此种情况下，在执行步骤210之后，网络设备会向用户设备发送随机接入反馈信息，即Message 2。用户设备在接收到Message 2后，会向网络设备发送上行应答信息，即Message3，该Message 3包括用户设备的接入带宽能力。
网络设备通过在Message4中携带控制信道时频资源的指示信息，使得用户设备在初始接入时确定了专用搜索空间。由于Message 4的发送是在Message 3上行应答信息之后，用户设备通过Message 3可以更为详尽的向网络设备上报用户带宽能力或者其他用户能力信息，网络设备通过Message 4指示的用户专用搜索空间信息会更加准确。所述方法通过准确的为用户设备配置专用搜索空间，扩大了控制信道容量。同时由于在初始接入时即完成了用户专用搜索空间的频域资源分配，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
可选的，在网络设备通过RAR信息携带所述反馈信息的情况下，用户设备根据反馈信息，进一步确定专用搜索空间的时频资源位置。
可选的，在步骤240之后，方法200还可包括以下步骤：
步骤250，用户设备上行同步失败时，触发重新发送前导信号序列信号。该前导信号序列信号与步骤210中的前导信号序列信号相同，在此不再赘述。
步骤260，网络设备根据接收到的前导信号会重新发送对应的反馈信息。该反馈信息与步骤220中的反馈信息相同，在此不再赘述。
步骤270，用户设备根据重新发送的反馈信息重新配置用户专用搜索空间。
通过执行上述步骤，可以保证用户设备在初始接入竞争失败后，重新发送前导信号序列进行与网络设备的连接时，同样可以获得用户设备专用搜索空间的频域资源位置。
可选的，在步骤240之后，方法200还可包括以下步骤：
步骤250’，网络设备向接入状态的用户设备发送高层控制信息，如RRC信令，所述高层控制信息包括指示用户专用搜索空间的频域资源指示信息。
步骤260’,用户设备根据接收到的RRC信令配置用户设备专用搜索空间。
通过执行以上步骤，用户设备可以在RRC连接成功后，通过接收网络设备发送的RRC信令，对用户设备专用搜索空间进行更新。
上文结合图2至图7描述了根据本发明实施例的控制信道的资源指示方法，下面结合图8至图11描述根据本发明实施例的用户设备和网络设备。
应理解，根据本发明实施例的用户设备800可对应于根据本发明实施例的控制信道的资源指示方法200中的用户设备，并且用户设备800中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中用户设备的相应流程，为了简洁，在此不再赘述。
图8是根据本发明实施例的用户设备800的结构示意图。如图8所示，用户设备800包括发送单元810，处理单元820和接收单元830。
发送单元810，用于发送前导信号序列。
接收单元830，用于接收所述前导信号序列对应的反馈信息，其中，所述反馈信息由公共搜索空间内承载的下行控制信息所指示，所述用户设备确定控制信道时检测的时频资源包括所述公共搜索空间和用户设备专用搜索空间。
处理单元820，用于根据所述反馈信息确定所述用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
可选的，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
可选的，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
第一时频资源、公共搜索空间、第一候选控制信道及多个时频资源单元的关系，以及第二时频资源、用户专用搜索空间、第二候选控制信道及多个时频资源单元的关系具体请参见图3的相关描述以及方法200中的相关描述。
可选的，所述反馈信息还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
可选的，所述反馈信息还包括以下信息中的一种或多种：用户设备专用搜索空间的子 载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
在一种可能的方式中，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间中的所述一个或多个第二候选控制信道。具体请参见方法200中关于参考信号扰码序列的描述。
可选的，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。具体请参见方法200中关于聚合等级的相关描述。
可选的，所述反馈信息还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。此时，前导信号序列对应的反馈信息包括第二消息。
可选的，所述发送单元810发送的所述前导信号序列包括所述用于指示用户设备的接入带宽能力的指示信息。
通过在Message2中携带控制信道时频资源的指示信息，使得用户设备在初始接入时即可上报接入带宽能力。使得网络设备为用户设备分配用户专用搜索空间时，可以基于用户设备的接入带宽能力进行考虑。例如，调度Message 4的频域资源时就可以在用户设备专用搜索空间进行，而不用放在公共搜索空间。该用户设备初始接入时的控制信道碰撞概率降低，并可获知准确的用户设备专用搜索空间。
可选的，所述反馈信息为高层信令。此种情况下，前导信号序列对应的反馈信息包括第四消息。
可选的，在发送单元810发送所述前导信号序列之后，接收单元830接收所述反馈信息之前，发送单元810还用于发送上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
通过在Message4中携带控制信道时频资源的指示信息，使得用户设备在初始接入时确定了专用搜索空间。由于Message 4的发送是在Message 3上行应答信息之后，用户设备通过Message 3可以更为详尽的向网络设备上报用户带宽能力或者其他用户能力信息，网络设备通过Message 4指示的用户专用搜索空间信息会更加准确。该用户设备通过在接入时上报用户设备带宽能力，可准确获知专用搜索空间，扩大了控制信道容量。同时由于在初始接入时即完成了用户专用搜索空间的频域资源分配，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
可选的，接收单元830还用于接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
可选的，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。具体请参见方法200中关于广播信息的相关描述。
应注意，处理单元820可以由处理器实现，发送单元810可以由发送器实现，接收单元830可以由接收器实现。图9是根据本发明另一实施例的用户设备900的结构示意图。如图9所示，用户设备900包括处理器910、接收器920、发送器930和存储器940。
其中，存储器940可以用于存储处理器910执行的代码等。发送器930用于在处理器910的控制下发送信号。接收器920用于在处理器1110的控制下接收信号。
应理解，根据本发明实施例的用户设备900可对应于根据本发明实施例的控制信道的资源指示方法200中的用户设备以及根据本发明实施例的用户设备800，并且用户设备800中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中网络设备的相应流程，为了简洁，在此不再赘述。
图10是根据本发明实施例的网络设备1000的结构示意图。如图10所示，网络设备1000包括发送单元1010、处理单元1020和接收单元1030。
接收单元1030，用于接收用户设备发送的前导信号序列。
处理单元1020，用于确定所述前导信号序列对应的反馈信息，其中，所述反馈信息由公共搜索空间承载的下行控制信息所指示，所述用户设备确定控制信道时检测的时频资源包括所述公共搜索空间和用户设备专用搜索空间，所述反馈信息用于指示所述用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；
发送单元1010用于发送所述反馈信息。
可选的，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
可选的，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
第一时频资源、公共搜索空间、第一候选控制信道及多个时频资源单元的关系，以及第二时频资源、用户专用搜索空间、第二候选控制信道及多个时频资源单元的关系具体请参见图3的相关描述以及方法200中的相关描述。
可选的，所述反馈信息还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
可选的，所述反馈信息还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
可选的，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间中的所述一个或多个第二候选控制信道。具体请参见方法200中关于参考信号扰码序列的描述。
可选的，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。具体请参见方法200中关于聚合等级的相关描述。
可选的，所述反馈信息还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。此时，前导信号序列 对应的反馈信息包括第二消息。
可选的，接收单元1030接收的所述前导信号序列包括所述用于指示所述用户设备的接入带宽能力的指示信息。
网络设备通过在Message2中携带控制信道时频资源的指示信息，可在初始接入时获知用户设备的接入带宽能力。使得网络设备为用户设备分配用户专用搜索空间时，可以基于用户设备的接入带宽能力进行考虑。例如，调度Message 4的频域资源时就可以在用户设备专用搜索空间进行，而不用放在公共搜索空间。此方法扩大了控制信道容量，降低了控制信道初始接入时的碰撞概率。
可选的，所述反馈信息为高层信令。此种情况下，前导信号序列对应的反馈信息包括第四消息。
可选的，在接收单元1030接收所述前导信号序列之后，发送单元1010发送所述反馈信息之前，接收单元1030还用于接收上行应答信息，所述上行应答信息包括所述用户设备的接入带宽能力。
网络设备通过在Message4中携带控制信道时频资源的指示信息，使得用户设备在初始接入时确定了专用搜索空间的频域资源。由于Message 4的发送是在Message 3上行应答信息之后，用户设备通过Message 3可以更为详尽的向网络设备上报用户带宽能力或者其他用户能力信息，网络设备通过Message 4指示的用户专用搜索空间信息会更加准确。该网络设备通过准确的为用户设备配置专用搜索空间，扩大了控制信道容量。该网络设备可在初始接入时即完成用户专用搜索空间的频域资源分配，降低了控制信道初始接入时的碰撞概率，降低了接入延时。
可选的，所述发送单元还用于发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
可选的，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。具体请参见方法200中关于广播信息的相关描述。
应理解，根据本发明实施例的网络设备1000可对应于根据本发明实施例的控制信道的配置方法200中的网络设备，并且网络设备1000中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中网络设备的相应流程，为了简洁，在此不再赘述。
应注意，发送单元1010可以由发送器实现，接收单元1030可以由接收器实现，处理单元1020可以由处理器实现。图11是根据本发明另一实施例的网络设备1100的结构示意图。如图11所示，用户设备1100包括处理器1110、接收器1120、发送器1130和存储器1140。
其中，存储器1140可以用于存储处理器1110执行的代码等。接收器1120用于在处理器1110的控制下接收信号。发送器1130用于在处理器1110的控制下发送信号。
应理解，根据本发明实施例的网络设备1100可对应于根据本发明实施例的控制信道的资源指示方法200中的网络设备以及根据本发明实施例的网络设备1000，并且网络设备1100中的各个单元的上述和其它操作和/或功能分别为了实现图2所示方法200中网络设备的相应流程，为了简洁，在此不再赘述。
需要说明的是，以上各实施例中若涉及总线系统，除包括数据总线之外，还可以包括 电源总线、控制总线和状态信号总线。
以上各实施例中的存储器可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)、硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器还可以包括上述种类的存储器的组合。
以上各实施例中的处理器可以是中央处理器(central processing unit，CPU)、网络处理器(network processor，NP)或者CPU和NP的组合。处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)、可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)、现场可编程逻辑门阵列(field-programmable gate array，FPGA)、通用阵列逻辑(generic array logic，GAL)或其任意组合。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明实施例的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以所述权利要求的保护范围为准。

Claims (55)

  1. 一种控制信道的资源指示方法，其特征在于，包括：
    发送前导信号序列；接收所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；
    根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
  2. 一种控制信道的资源指示方法，其特征在于，包括：
    接收高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；
    根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
  3. 根据权利要求1或2所述的方法，其特征在于，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
  4. 根据权利要求3所述的方法，其特征在于，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，
    所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
    所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
    所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
  6. 根据权利要求1-5任一项所述的方法，其特征在于，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
  7. 根据权利要求6所述的方法，其特征在于，所述参考信号的扰码序列用于解调所述用 户设备专用搜索空间。
  8. 根据权利要求6所述的方法，其特征在于，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和/或所述聚合等级的取值。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，
    所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，
    在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；
    在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
  11. 根据权利要求1-10任一项所述的方法，其特征在于，所述高层信令为随机接入反馈信息RAR信令或无线资源控制协议RRC信令。
  12. 根据权利要求1-11任一项所述的方法，其特征在于，所述方法还包括：
    接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
  13. 根据权利要求12所述的方法，其特征在于，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
  14. 一种控制信道的资源指示方法，其特征在于，包括：
    接收用户设备发送的前导信号序列；
    确定所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；
    发送所述高层信令。
  15. 一种控制信道的资源指示方法，其特征在于，包括：
    确定高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位 置；
    发送所述高层信令。
  16. 根据权利要求14或15所述的方法，其特征在于，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
  17. 根据权利要求16所述的方法，其特征在于，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
  18. 根据权利要求14-17任一项所述的方法，其特征在于，
    所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
    所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
    所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
  19. 根据权利要求14-18任一项所述的方法，其特征在于，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
  20. 根据权利要求19所述的方法，其特征在于，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
  21. 根据权利要求19所述的方法，其特征在于，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
  22. 根据权利要求14-21任一项所述的方法，其特征在于，
    所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，
    在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；
    在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
  23. 根据权利要求14-22任一项所述的方法，其特征在于，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
  24. 根据权利要求14-21任一项所述的方法，其特征在于，所述高层信令为随机接入反馈信息RAR信令或无线资源控制协议RRC信令。
  25. 根据权利要求14-24任一项所述的方法，其特征在于，所述方法还包括：
    发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
  26. 根据权利要求25所述的方法，其特征在于，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
  27. 一种用户设备，其特征在于，包括：
    发送单元，用于发送前导信号序列；
    接收单元，用于接收所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；
    处理单元，用于根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
  28. 一种用户设备，其特征在于，包括：
    接收单元，用于接收高层信令，其中，所述高层信令由公共搜索空间内承载的下行控制信息所指示；
    处理单元，用于根据所述高层信令确定用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置。
  29. 根据权利要求27或28所述的方法，其特征在于，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
  30. 根据权利要求29所述的方法，其特征在于，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二候选控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
  31. 根据权利要求27-30任一项所述的用户设备，其特征在于，
    所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
    所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
    所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
  32. 根据权利要求27-31任一项所述的用户设备，其特征在于，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜索空间的传输模式。
  33. 根据权利要求32所述的用户设备，其特征在于，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
  34. 根据权利要求32所述的用户设备，其特征在于，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
  35. 根据权利要求27-34任一项所述的方法，其特征在于，
    所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，
    在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；
    在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
  36. 根据权利要求27-35任一项所述的用户设备，其特征在于，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
  37. 根据权利要求27-33任一项所述的用户设备，其特征在于，所述高层信令为随机接入反馈信息RAR信令或无线资源控制协议RRC信令。
  38. 根据权利要求27-37任一项所述的用户设备，其特征在于，所述接收单元还用于接收广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
  39. 根据权利要求38所述的用户设备，其特征在于，所述广播信息包括指示字段，所述 指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
  40. 一种网络设备，其特征在于，包括：
    接收单元，用于接收用户设备发送的前导信号序列；
    处理单元，用于确定所述前导信号序列对应的高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；
    发送单元，用于发送所述高层信令。
  41. 一种网络设备，其特征在于，包括：
    处理单元，用于确定高层信令，其中，所述高层信令由公共搜索空间承载的下行控制信息所指示，所述高层信令用于指示用户设备专用搜索空间的频域资源位置信息，所述频域资源位置信息包括所述用户设备专用搜索空间在频域上所占用的频域资源单元的数量和所述频域资源单元的位置；
    发送单元，用于发送所述高层信令。
  42. 根据权利要求40或41所述的网络设备，其特征在于，所述公共搜索空间位于第一时频资源，所述第一时频资源包括多个第一候选控制信道，所述多个第一候选控制信道中的每个第一候选控制信道包括一个或多个频域资源单元，所述公共搜索空间为所述多个第一候选控制信道的集合。
  43. 根据权利要求42所述的网络设备，其特征在于，所述用户设备专用搜索空间位于第二时频资源，所述第二时频资源包括多个第二控制信道，所述多个第二候选控制信道中的每个第二候选控制信道包括一个或多个频域资源单元，所述用户设备专用搜索空间为所述多个第二候选控制信道中的集合，其中，所述第二时频资源与所述第一时频资源不完全重合。
  44. 根据权利要求40-43任一项所述的网络设备，其特征在于，
    所述高层信令还包括所述用户设备专用搜索空间在频域上的映射方式，所述映射方式包括连续映射和离散映射，
    所述映射方式为所述连续映射时，所述频域资源位置还包括所述频域资源单元的起始位置信息；或者
    所述映射方式为所述离散映射时，所述频域资源位置还包括至少一个所述频域资源单元的位置。
  45. 根据权利要求40-44任一项所述的网络设备，其特征在于，所述高层信令还包括以下信息中的一种或多种：用户设备专用搜索空间的子载波宽度信息，用户设备专用搜索空间中的参考信号的扰码序列信息，用户设备专用搜索空间的聚合等级信息，和用户设备专用搜 索空间的传输模式。
  46. 根据权利要求42所述的网络设备，其特征在于，所述参考信号的扰码序列用于解调所述用户设备的用户设备专用搜索空间。
  47. 根据权利要求45所述的网络设备，其特征在于，所述聚合等级信息包括所述用户设备专用搜索空间的聚合等级集合包括的元素数量和或所述聚合等级的取值。
  48. 根据权利要求40-47任一项所述的方法，其特征在于，
    所述控制信道的时频资源包括所述公共搜索空间和所述用户设备专用搜索空间，
    在所述控制信道的时频资源大小大于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第一集合；
    在所述控制信道的时频资源大小小于一个预定义的阈值的情况下，所述控制信道的聚合等级集合为第二集合。
  49. 根据权利要求40-48任一项所述的网络设备，其特征在于，所述高层信令还包括上行传输的定时提前指示信息，所述定时提前指示信息用于指示用户设备发送上行信息时，相对于下行传输定时的时间差。
  50. 根据权利要求40-49任一项所述的网络设备，其特征在于，所述高层信令为随机接入反馈信息RAR信令或无线资源控制协议RRC信令。
  51. 根据权利要求40-46任一项所述的网络设备，其特征在于，所述发送单元还用于发送广播信息，所述广播信息包括用于指示所述公共搜索空间的映射方式，所述映射方式包括离散映射和连续映射。
  52. 根据权利要求51所述的网络设备，其特征在于，所述广播信息包括指示字段，所述指示字段用于指示所述公共搜索空间的映射方式，或者，所述广播信息使用的扰码用于指示所述公共搜索空间的映射方式。
  53. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有程序，所述程序使得通信设备执行权利要求1-26任一项所述的方法。
  54. 一种计算机程序产品，其特征在于，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被通信设备运行时，使得所述通信设备执行权利要求1-26任一项所述的方法。
  55. 一种控制信道的资源指示装置，其特征在于，所述装置包括至少一个处理器和至少一个存储介质，所述至少一个存储介质存储有指令，所述指令被所述处理器运行时，使得所述处理器执行权利要求1-26任一项所述的方法。
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