WO2018126886A1 - 无线信号的频率位置指示方法、基站和用户设备 - Google Patents

无线信号的频率位置指示方法、基站和用户设备 Download PDF

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Publication number
WO2018126886A1
WO2018126886A1 PCT/CN2017/117175 CN2017117175W WO2018126886A1 WO 2018126886 A1 WO2018126886 A1 WO 2018126886A1 CN 2017117175 W CN2017117175 W CN 2017117175W WO 2018126886 A1 WO2018126886 A1 WO 2018126886A1
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Prior art keywords
frequency
carrier
subcarrier spacing
synchronization signal
offset
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PCT/CN2017/117175
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English (en)
French (fr)
Inventor
刘仁茂
张萌
Original Assignee
夏普株式会社
刘仁茂
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Filing date
Publication date
Application filed by 夏普株式会社, 刘仁茂 filed Critical 夏普株式会社
Priority to CA3049284A priority Critical patent/CA3049284A1/en
Priority to US16/476,024 priority patent/US20190380098A1/en
Priority to EP17890582.4A priority patent/EP3567948A4/en
Priority to BR112019013778A priority patent/BR112019013778A2/pt
Priority to SG11201906311QA priority patent/SG11201906311QA/en
Priority to KR1020197022976A priority patent/KR102467825B1/ko
Publication of WO2018126886A1 publication Critical patent/WO2018126886A1/zh
Priority to IL267849A priority patent/IL267849B2/en
Priority to PH12019501590A priority patent/PH12019501590A1/en

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    • 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
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals

Definitions

  • the present application relates to the field of wireless communication technologies, and more particularly, to a method for indicating a synchronization signal, a carrier, and a frequency position of a subband, a base station, and a user equipment.
  • NTT DOCOMO proposed a new research project on 5G technology standards (see Non-patent literature: RP-160671) :New SID Proposal: Study on New Radio Access Technology), and approved.
  • the goal of the research project is to develop a new wireless (New Radio: NR) access technology to meet all 5G usage scenarios, requirements and deployment environments.
  • NR mainly has three usage scenarios: Enhanced Mobile Broadband (eMBB), Massive Machine Type Communication (mMTC), and Ultra reliable and low latency communications (URLLC).
  • eMBB Enhanced Mobile Broadband
  • mMTC Massive Machine Type Communication
  • URLLC Ultra reliable and low latency communications
  • the standardization of NR is carried out in two phases: the first phase of standardization will be completed in mid-2018; the second phase of standardization will be completed by the end of 2019.
  • the first-stage standard specification is forward-compatible with the second-stage standard specification, while the second-stage standard specification is based on the first-stage standard specification and meets all the requirements of the 5G NR technical standard.
  • the frequency gate of the NR sync signal can depend on the carrier frequency range, at least for the case where the carrier frequency is greater than 6 GHz, the frequency gate of the sync signal It can be larger than the 100 kHz channel gate of LTE. Moreover, for an NR cell, the center frequency of its synchronization signal can be different from the center frequency of the NR carrier.
  • the present application primarily addresses the problem of how to determine or indicate the frequency position of the NR sync signal, carrier, and subband.
  • a base station including: a configuration unit configured to configure any one or more of a carrier center frequency, a carrier frequency position, and a subband frequency position; and a transmitting unit configured to A synchronization signal is transmitted at the candidate frequency location and the configuration of the configuration unit is transmitted.
  • the configuration unit is configured by any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the configuration unit is configured to determine the candidate frequency location based on a grid of a particular size and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the configuration unit is configured to indicate a carrier center frequency by an indicator and a physical resource block PRB offset.
  • the configuration unit is configured to indicate a carrier frequency location by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the configuration unit is configured to indicate a carrier frequency location by a physical resource block PRB offset and a carrier bandwidth.
  • the configuration unit is configured to indicate a frequency location of a certain subband on the carrier by an indicator, a physical resource block PRB offset, and a subband length.
  • the configuration unit is configured to indicate a frequency location of a certain subband on the carrier by a physical resource block PRB offset, a starting PRB index, and a subband length.
  • the configuration unit is configured to define the PRB based on a default subcarrier spacing or a reference subcarrier spacing.
  • the configuration unit is configured to: configure, by the MIB, a parameter for indicating a carrier center frequency and/or a parameter for indicating a carrier frequency position; configured by the SIB to indicate that the common search space is located a parameter of a frequency position of the subband; and a parameter configured to indicate a frequency position of a subband in which the UE unique search space is located by dedicated RRC signaling.
  • a method performed by a base station comprising: configuring any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position; and transmitting the synchronization at the candidate frequency position Signaling and transmitting the configuration of the configuration unit.
  • the configuration is performed using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the candidate frequency locations are determined based on a particular size of the grid and reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on the frequency range of the carrier.
  • the carrier center frequency is indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location is indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location is indicated by a physical resource block PRB offset and a carrier bandwidth.
  • the frequency location of a certain subband on the carrier is indicated by an indicator, a physical resource block PRB offset, and a subband length.
  • the frequency location of a certain subband on the carrier is indicated by a physical resource block PRB offset, a starting PRB index, and a subband length.
  • the PRB is defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • parameters for indicating a carrier center frequency and/or parameters for indicating a carrier frequency position are configured by an MIB; parameters for indicating a frequency position of a subband in which a common search space is located are configured by an SIB; And configuring parameters for indicating the frequency location of the sub-band in which the UE-specific search space is located by dedicated RRC signaling.
  • a user equipment UE comprising: a receiving unit configured to receive a synchronization signal from a candidate frequency location and receive configuration information; and an extracting unit configured to be configured according to the configuration information Any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position are extracted.
  • the configuration information is configured using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the extracting unit is configured to determine the candidate frequency location based on a grid of a particular size and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the carrier center frequency is indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location is indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location is indicated by the physical resource block PRB offset and the carrier bandwidth.
  • the frequency location of a certain subband on the carrier is indicated by an indicator, a physical resource block PRB offset, and a subband length.
  • the frequency location of a certain subband on the carrier is indicated by the physical resource block PRB offset, the starting PRB index, and the subband length.
  • the PRB is defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • the parameters for indicating the carrier center frequency and/or the parameters for indicating the carrier frequency position are configured by the MIB; the parameters for indicating the frequency position of the sub-band in which the common search space is located are through the SIB Configurable; and parameters for indicating the frequency location of the sub-band in which the UE-specific search space is located are configured by dedicated RRC signaling.
  • a method performed by a user equipment UE comprising: receiving a synchronization signal from a candidate frequency location, and receiving configuration information; and extracting a carrier center frequency, a carrier frequency location according to the configuration information And any one or more of the subband frequency positions.
  • the configuration information is configured using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the candidate frequency locations are determined according to a grid of particular sizes and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the carrier center frequency is indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location is indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location is indicated by the physical resource block PRB offset and the carrier bandwidth.
  • the frequency location of a certain subband on the carrier is indicated by an indicator, a physical resource block PRB offset, and a subband length.
  • the frequency location of a certain subband on the carrier is indicated by the physical resource block PRB offset, the starting PRB index, and the subband length.
  • the PRB is defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • the parameters for indicating the carrier center frequency and/or the parameters for indicating the carrier frequency position are configured by the MIB; the parameters for indicating the frequency position of the sub-band in which the common search space is located are through the SIB Configurable; and parameters for indicating the frequency location of the sub-band in which the UE-specific search space is located are configured by dedicated RRC signaling.
  • FIG. 1 is a block diagram showing a base station according to an embodiment of the present application.
  • FIG. 2 is a block diagram showing a user equipment in accordance with one embodiment of the present application.
  • FIG. 3 is a schematic diagram showing a carrier center frequency indication according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram showing carrier frequency position indication in accordance with an embodiment of the present application.
  • FIG. 5 is a schematic diagram showing subband frequency position indication according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram showing subband frequency position indication according to an embodiment of the present application.
  • FIG. 7 is a flow chart showing a method performed by a base station in accordance with one embodiment of the present application.
  • FIG. 8 is a flow chart showing a method performed by a user equipment in accordance with one embodiment of the present application.
  • LTE Long Term Evolution
  • eLTE Long Term Evolution
  • NR New Radio
  • FIG. 1 shows a block diagram of a base station 100 in accordance with one embodiment of the present application.
  • the base station 100 includes a configuration unit 110 and a transmitting unit 120.
  • base station 100 may also include other functional units necessary to carry out its functions, such as various processors, memories, radio frequency signal processing units, baseband signal processing units, and other physical downlink channel transmission processing units, to name a few.
  • processors such as various processors, memories, radio frequency signal processing units, baseband signal processing units, and other physical downlink channel transmission processing units, to name a few.
  • radio frequency signal processing units such as radio frequency signal processing units
  • baseband signal processing units such as baseband signal processing units
  • other physical downlink channel transmission processing units such as Wi-Fi
  • the configuration unit 110 is configured to configure any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position.
  • the configuration unit 110 may be configured using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • configuration unit 110 can be configured to determine the candidate frequency locations based on a particular size of grid and reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • configuration unit 110 can be configured to indicate the carrier center frequency by an indicator and a physical resource block PRB offset.
  • configuration unit 110 can be configured to indicate a carrier frequency location by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the configuration unit 110 may also be configured to indicate the carrier frequency location by the physical resource block PRB offset and the carrier bandwidth.
  • configuration unit 110 can be configured to indicate the frequency location of a certain subband on the carrier by an indicator, a physical resource block PRB offset, and a subband length.
  • the configuration unit 110 may also be configured to indicate the frequency position of a certain sub-band on the carrier by the physical resource block PRB offset, the starting PRB index, and the sub-band length.
  • configuration unit 110 can be configured to define a PRB based on a default subcarrier spacing or a reference subcarrier spacing.
  • the configuration unit 110 may be configured to: configure, by the MIB, a parameter for indicating a carrier center frequency and/or a parameter for indicating a carrier frequency position; configuring, by the SIB, a child indicating that the common search space is located a parameter of a frequency position of the band; and a parameter configured to indicate a frequency position of a sub-band in which the UE-specific search space is located by dedicated RRC signaling.
  • the transmitting unit 120 is configured to transmit a synchronization signal at the candidate frequency location and transmit the configuration of the configuration unit.
  • FIG. 2 shows a block diagram of a user equipment UE 200 in accordance with one embodiment of the present application.
  • the UE 200 includes a receiving unit 210 and an extracting unit 220.
  • the UE 200 may also include other functional units necessary to perform its functions, such as various processors, memories, radio frequency signal processing units, baseband signal processing units, and other physical uplink channel transmission processing units, to name a few.
  • processors such as various processors, memories, radio frequency signal processing units, baseband signal processing units, and other physical uplink channel transmission processing units, to name a few.
  • radio frequency signal processing units such as radio frequency signal processing units, baseband signal processing units, and other physical uplink channel transmission processing units
  • the receiving unit 210 is arranged to receive the synchronization signal from the candidate frequency location and receive the configuration information.
  • the extracting unit 220 is configured to extract any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position according to the configuration information.
  • the configuration information may be configured by any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the extracting unit 220 can be configured to determine the candidate frequency locations according to a grid of specific sizes and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the carrier center frequency is indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location is indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location may be indicated by a physical resource block PRB offset and a carrier bandwidth.
  • the frequency location of a certain subband on the carrier is indicated by an indicator, a physical resource block PRB offset, and a subband length.
  • the frequency location of a certain subband on the carrier may be indicated by a physical resource block PRB offset, a starting PRB index, and a subband length.
  • the PRB is defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • parameters for indicating a carrier center frequency and/or parameters for indicating a carrier frequency position are configured by an MIB; parameters for indicating a frequency position of a subband in which a common search space is located are by SIB Configured; and parameters for indicating the frequency location of the sub-band in which the UE-specific search space is located are configured by dedicated RRC signaling.
  • base station 100 and UE 200 will be described by way of several specific embodiments.
  • This embodiment relates to a candidate frequency position of a synchronization signal center frequency or a frequency gate of a synchronization signal.
  • the center frequency of the synchronization signal and the center frequency of the carrier are in the same position, that is, the two center frequencies are the same.
  • the base station (eNB) 100 transmits a synchronization signal at a certain candidate frequency position of the synchronization signal, and then notifies the size of the downlink bandwidth of the carrier through the MIB.
  • the channel bandwidth of the carrier can reach above 1 GHz, and for the flexibility of the value of the carrier channel bandwidth, it is possible that the channel bandwidth is not quantized to several specific values like LTE, but may be any value.
  • the size of the transmission bandwidth of the carrier channel can be represented by the number of physical resource blocks (PRBs). In the frequency domain, one PRB contains 12 subcarriers.
  • multiple subbands can be supported on the same carrier, and different subbands use different subcarrier spacing. Due to the difference in subcarrier spacing, a PRB that also contains 12 subcarriers has different physical bandwidths. For example, for a subband with a subcarrier spacing of 15 kHz, the physical bandwidth of one PRB is 180 kHz; and for a subband with a subcarrier spacing of 60 kHz, the physical bandwidth of one PRB will be 720 kHz. Therefore, for a carrier or subband of the same channel bandwidth, if the bandwidth of the carrier or subband is represented by the number of PRBs, the number of PRBs contained therein is different with respect to different subcarrier spacing sizes.
  • the carrier bandwidth of the subcarrier spacing of 60 kHz is used.
  • the number of PRBs will be 25.
  • the subcarrier spacing of NR can be: 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, and the like. If the subcarrier spacing of the synchronization signal can take any of the above subcarrier spacing values, the eNB can transmit the synchronization signal using one of a plurality of subcarrier spacings at the candidate frequency location of each synchronization signal.
  • the UE needs to blindly check the synchronization signals of multiple subcarrier intervals at the candidate frequency positions of each synchronization signal, thus increasing the complexity of the UE and the time required for the synchronization process. Therefore, the subcarrier spacing of one or more synchronization signals can be predefined in accordance with the frequency range of the carrier. As shown in Table 1 below, only one subcarrier spacing is defined in a certain carrier frequency range. Thus, the eNB only needs to transmit a synchronization signal of one subcarrier interval at the candidate frequency position of a certain synchronization signal. Thereby reducing the complexity of the UE and shortening the synchronization time of the UE.
  • the eNB can only transmit the synchronization signal by using one of a plurality of subcarrier intervals when transmitting the synchronization signal.
  • the UE determines the subcarrier spacing of the received synchronization signal by blind detection.
  • the subcarrier spacing of the synchronization signal may be some default subcarrier spacing.
  • the center frequency of the synchronization signal is at the same frequency position as the center frequency of the carrier, and the candidate frequency position or frequency raster of the synchronization signal center frequency is 100 kHz.
  • the frequency gate is also referred to as a channel raster.
  • the candidate frequency position or frequency raster of the sync signal center frequency should be an integer multiple of 100 kHz, and should also be an integer multiple of a PRB physical bandwidth.
  • the candidate frequency position or frequency gate of the sync signal center frequency should be the least common multiple of the 100 kHz and 12* sync signal subcarrier spacing, that is, the center frequency of the sync signal is 100 kHz and 12 *Integer multiple of the least common multiple of the sync signal subcarrier spacing.
  • the candidate frequency position or frequency gate of the center frequency is 900 kHz, that is, the center frequency of the synchronization signal is an integer multiple of 900 kHz.
  • the candidate frequency position or frequency gate of the center frequency of the synchronization signal shown in Table 2 below can be obtained for the frequency range of the different carriers.
  • the candidate frequency position or frequency gate of the sync signal center frequency should be the least common multiple of the 100 kHz and sync signal subcarrier spacing, that is, the center frequency of the sync signal is an integer multiple of the least common multiple of the sync signal subcarrier spacing of 100 kHz. .
  • the candidate frequency position or frequency gate of the center frequency is 300 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 300 kHz.
  • the candidate frequency position or frequency gate of the center frequency of the synchronization signal shown in Table 3 below can be obtained for the frequency range of the different carriers.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency is determined by the frequency range of the carrier or the frequency band of the carrier. As shown in Table 4 below, the frequency range of the carrier or the frequency band in which the carrier is located can obtain the candidate frequency position of the frequency gate of the synchronization signal or the center frequency of the synchronization signal. For example, when the carrier frequency is 3 to 6 GHz, the candidate frequency position or frequency gate of the center frequency of the synchronization signal is 1800 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 1800 kHz.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency is determined by the subcarrier spacing of the sync signal.
  • the candidate frequency position of the frequency gate of the synchronization signal or the center frequency of the synchronization signal can be obtained from the subcarrier spacing of the synchronization signal.
  • the candidate frequency position or frequency gate of the center frequency of the synchronization signal is 1800 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 1800 kHz.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency location or frequency gate of the sync signal center frequency may be determined by the subcarrier spacing and carrier frequency range of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate of the sync signal, the subcarrier spacing of the sync signal, and the carrier frequency range.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate of the sync signal and the subcarrier spacing of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate and carrier frequency range of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the center frequency of the synchronization signal and the center frequency of the carrier are in the same position, that is, the two center frequencies are the same.
  • the user equipment (UE) 200 can obtain the center frequency information of the synchronization signal by detecting the synchronization signal, and at the same time obtain the center frequency information of the carrier.
  • the size of the downlink bandwidth of the carrier can be known through the MIB.
  • the center frequency of the synchronization signal may not coincide with the center frequency of the carrier. That is, after detecting the synchronization signal to obtain the center frequency of the synchronization signal, the center frequency of the carrier cannot be known.
  • the channel bandwidth of the carrier can reach above 1 GHz, and for the flexibility of the value of the carrier channel bandwidth, it is possible that the channel bandwidth is not quantized to several specific values like LTE, but may be any value.
  • the size of the transmission bandwidth of the carrier channel can be represented by the number of physical resource blocks (PRBs).
  • PRBs physical resource blocks
  • one PRB contains 12 subcarriers.
  • multiple subbands can be supported on the same carrier, and different subbands use different subcarrier spacing. Due to the difference in subcarrier spacing, a PRB that also contains 12 subcarriers has a different physical bandwidth. For example, for a subband with a subcarrier spacing of 15 kHz, the physical bandwidth of one PRB is 180 kHz; and for a subband with a subcarrier spacing of 60 kHz, the physical bandwidth of one PRB will be 720 kHz.
  • the bandwidth of the carrier or subband is represented by the number of PRBs
  • the number of PRBs contained therein is different with respect to different subcarrier spacing sizes. For example, for a carrier of a certain bandwidth, if a subcarrier spacing of 15 kHz is used to calculate the number of PRBs included in the carrier bandwidth, and the number of PRBs of the carrier bandwidth is 100, the carrier bandwidth of the subcarrier spacing of 60 kHz is used. The number of PRBs will be 25.
  • the subcarrier spacing of the NR may be: 3.75 kHz, 7.5 kHz, 15 kHz, 30 kHz, 60 kHz, 120 kHz, and the like. If the subcarrier spacing of the synchronization signal can adopt any of the above subcarrier spacing values, the UE needs to blindly detect the synchronization signals of multiple subcarrier intervals at the candidate frequency positions of each synchronization signal, which will increase the complexity of the UE and the synchronization process required. time.
  • the subcarrier spacing of one or more synchronization signals can be predefined in accordance with the frequency range of the carrier. As shown in Table 1 above, only one subcarrier spacing is defined in a certain carrier frequency range. In this way, the UE only needs to detect a synchronization signal of one subcarrier interval at the candidate frequency position of a certain synchronization signal. Thereby reducing the complexity of the UE and shortening the synchronization time of the UE.
  • the eNB can only transmit the synchronization signal by using one of a plurality of subcarrier intervals when transmitting the synchronization signal.
  • the UE determines the subcarrier spacing of the received synchronization signal by blind detection.
  • the subcarrier spacing of the synchronization signal may be some default subcarrier spacing.
  • the center frequency of the synchronization signal is at the same frequency position as the center frequency of the carrier, and the candidate frequency position or frequency raster of the synchronization signal center frequency is 100 kHz.
  • the frequency gate is also referred to as a channel raster.
  • the candidate frequency position or frequency raster of the sync signal center frequency should be an integer multiple of 100 kHz, and should also be an integer multiple of a PRB physical bandwidth.
  • the candidate frequency position or frequency gate of the sync signal center frequency should be the least common multiple of the 100 kHz and 12* sync signal subcarrier spacing.
  • the candidate frequency position or frequency gate of the center frequency is 900 kHz, that is, the center frequency of the synchronization signal is an integer multiple of 900 kHz.
  • a candidate frequency position or frequency gate of the center frequency of the synchronization signal as shown in Table 2 above can be obtained for the frequency range of the different carriers.
  • the candidate frequency position or frequency gate of the sync signal center frequency should be the least common multiple of the 100 kHz and sync signal subcarrier spacing, that is, the center frequency of the sync signal is an integer multiple of the least common multiple of the sync signal subcarrier spacing of 100 kHz. .
  • the candidate frequency position or frequency gate of the center frequency is 300 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 300 kHz.
  • a candidate frequency position or frequency gate of the center frequency of the synchronization signal as shown in Table 3 above can be obtained for the frequency range of the different carriers.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency is determined by the frequency range of the carrier or the frequency band of the carrier. As shown in Table 4 above, the frequency range of the carrier or the frequency band in which the carrier is located can obtain the candidate frequency position of the frequency gate of the synchronization signal or the center frequency of the synchronization signal. For example, when the carrier frequency is 3 to 6 GHz, the candidate frequency position or frequency gate of the center frequency of the synchronization signal is 1800 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 1800 kHz.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency is determined by the subcarrier spacing of the sync signal.
  • the candidate frequency position of the frequency gate of the synchronization signal or the center frequency of the synchronization signal can be obtained from the subcarrier spacing of the synchronization signal.
  • the candidate frequency position or frequency gate of the center frequency of the synchronization signal is 1800 kHz, that is, the center frequency of the synchronization signal is an integral multiple of 1800 kHz.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency location or frequency gate of the sync signal center frequency may be determined by the subcarrier spacing and carrier frequency range of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate of the sync signal, the subcarrier spacing of the sync signal, and the carrier frequency range.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate of the sync signal and the subcarrier spacing of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the candidate frequency position or frequency gate of the sync signal center frequency may be determined by the 100 kHz channel gate and carrier frequency range of the sync signal.
  • the candidate frequency position of the center frequency of the synchronization signal means that a synchronization signal can be transmitted at the frequency or frequency position; or a frequency or frequency position that can be used to transmit the synchronization signal.
  • the candidate frequency position is a set of frequency or frequency positions that can be used to transmit the synchronization signal satisfying a certain condition, and the candidate frequency position of the synchronization signal center frequency may also be referred to as a frequency gate or a channel gate of the synchronization signal.
  • the subcarrier spacing of the synchronization signal or other predefined subcarrier spacing of this embodiment is either a certain default subcarrier spacing.
  • the method for determining the candidate frequency position of the synchronization signal center frequency or the frequency gate of the synchronization signal in this embodiment can also be applied to determine the center frequency of the carrier or the channel gate or frequency gate of the carrier.
  • the interval between candidate frequency positions of the center frequency of the carrier may be greater than or less than or equal to the interval between candidate frequency positions of the center frequency of the synchronization signal, and must be an integer multiple relationship therebetween.
  • the frequency gate or channel gate of the carrier may be greater than or less than or equal to the frequency gate or channel gate of the center frequency of the synchronization signal, and must be an integer multiple relationship between the two.
  • This embodiment relates to a carrier center frequency and a carrier frequency position.
  • the center frequency of the synchronization signal and the center frequency of the carrier are in the same position, that is, the two center frequencies are the same.
  • the base station (eNB) 100 transmits a synchronization signal at a certain candidate frequency position of the synchronization signal, and then notifies the size of the downlink bandwidth of the carrier through the MIB.
  • the center frequency of the synchronization signal may not coincide with the center frequency of the carrier. That is, after detecting the synchronization signal to obtain the center frequency of the synchronization signal, the center frequency of the carrier cannot be known.
  • the channel bandwidth of the carrier can reach above 1 GHz, and for the flexibility of the value of the carrier channel bandwidth, it is possible that the channel bandwidth is not quantized to several specific values like LTE, but may be any value.
  • the size of the transmission bandwidth of the carrier channel can be represented by the number of physical resource blocks (PRBs).
  • PRBs physical resource blocks
  • one PRB contains 12 subcarriers.
  • multiple subbands can be supported on the same carrier, and different subbands use different subcarrier spacing. Due to the difference in subcarrier spacing, a PRB that also contains 12 subcarriers has a different physical bandwidth. For example, for a subband with a subcarrier spacing of 15 kHz, the physical bandwidth of one PRB is 180 kHz; and for a subband with a subcarrier spacing of 60 kHz, the physical bandwidth of one PRB will be 720 kHz.
  • the bandwidth of the carrier or subband is represented by the number of PRBs
  • the number of PRBs contained therein is different with respect to different subcarrier spacing sizes. For example, for a carrier of a certain bandwidth, if a subcarrier spacing of 15 kHz is used to calculate the number of PRBs included in the carrier bandwidth, and the number of PRBs of the carrier bandwidth is 100, the carrier bandwidth of the subcarrier spacing of 60 kHz is used. The number of PRBs will be 25.
  • the base station (eNB) 100 transmits a synchronization signal at a certain candidate frequency position of the synchronization signal, and the center frequency of the carrier can be determined according to the center frequency of the synchronization signal.
  • a high/low indicator indicates whether the center frequency of the carrier is higher than the center frequency of the synchronization signal or lower than the center frequency of the synchronization signal, and is offset by an Indicates the center frequency of the carrier offset from the center frequency of the sync signal.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers. For example, the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by the offset modulo 12 is the PRB number, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the frequency position of a carrier can be indicated by the following two ways:
  • the base station (eNB) 100 transmits a synchronization signal at a certain candidate frequency position of the synchronization signal.
  • the center frequency of the carrier is determined according to the center frequency of the synchronization signal.
  • a high/low indicator indicates whether the center frequency of the carrier is higher than the center frequency of the synchronization signal or lower than the center frequency of the synchronization signal, and is offset by an Indicates the center frequency of the carrier offset from the center frequency of the sync signal.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers.
  • the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the base station (eNB) 100 After indicating the center frequency of the carrier, the base station (eNB) 100 notifies the frequency position of the entire carrier by the channel bandwidth of the carrier or the configuration information of the transmission bandwidth.
  • the base station (eNB) 100 transmits a synchronization signal at a certain candidate frequency position of the synchronization signal. Instead of notifying the center frequency of the carrier, it is only necessary to notify the lowest frequency of the carrier or the offset of the center frequency of the highest frequency offset synchronization channel and the channel bandwidth or the transmission bandwidth of the carrier to inform the frequency position of the entire carrier, such as Figure 4 shows.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers.
  • the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the center frequency of the synchronization signal and the center frequency of the carrier are in the same position, that is, the two center frequencies are the same.
  • the user equipment (UE) can obtain the center frequency information of the synchronization signal by detecting the synchronization signal, and at the same time obtain the center frequency information of the carrier.
  • the size of the downlink bandwidth of the carrier can be known through the MIB.
  • the center frequency of the synchronization signal may not coincide with the center frequency of the carrier. That is, after detecting the synchronization signal to obtain the center frequency of the synchronization signal, the center frequency of the carrier cannot be known.
  • the channel bandwidth of the carrier can reach above 1 GHz, and for the flexibility of the value of the carrier channel bandwidth, it is possible that the channel bandwidth is not quantized to several specific values like LTE, but may be any value.
  • the size of the transmission bandwidth of the carrier channel can be represented by the number of physical resource blocks (PRBs).
  • PRBs physical resource blocks
  • one PRB contains 12 subcarriers.
  • multiple subbands can be supported on the same carrier, and different subbands use different subcarrier spacing. Due to the difference in subcarrier spacing, a PRB that also contains 12 subcarriers has a different physical bandwidth. For example, for a subband with a subcarrier spacing of 15 kHz, the physical bandwidth of one PRB is 180 kHz; and for a subband with a subcarrier spacing of 60 kHz, the physical bandwidth of one PRB will be 720 kHz.
  • the bandwidth of the carrier or subband is represented by the number of PRBs
  • the number of PRBs contained therein is different with respect to different subcarrier spacing sizes. For example, for a carrier of a certain bandwidth, if the subcarrier spacing of 15 kHz is used to calculate the number of PRBs included in the carrier bandwidth, and the number of PRBs of the carrier bandwidth is 100, the carrier bandwidth of the subcarrier spacing of 60 kHz is used. The number of PRBs will be 25.
  • the UE 200 can obtain the center frequency of the synchronization signal by detecting the synchronization signal, and the center frequency of the carrier does not need to be an integer multiple of 100 kHz as in the LTE, that is, the channel gate of the carrier is not required to be defined. It is only necessary to determine the center frequency of the carrier based on the center frequency of the sync signal. As shown in FIG. 3, with reference to the center frequency of the synchronization signal, a high/low indicator indicates whether the center frequency of the carrier is higher than the center frequency of the synchronization signal or lower than the center frequency of the synchronization signal, and is offset by an Indicates the center frequency of the carrier offset from the center frequency of the sync signal.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers. For example, the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time.
  • the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC.
  • the offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the frequency position of a carrier can be obtained in two ways:
  • the UE 200 can obtain the center frequency of the synchronization signal by detecting the synchronization signal, and the center frequency of the carrier does not need to be an integer multiple of 100 kHz like LTE, that is, the channel gate of the carrier is not required to be defined. It is only necessary to determine the center frequency of the carrier based on the center frequency of the sync signal. As shown in FIG. 3, with reference to the center frequency of the synchronization signal, a high/low indicator indicates whether the center frequency of the carrier is higher than the center frequency of the synchronization signal or lower than the center frequency of the synchronization signal, and is offset by an Indicates the center frequency of the carrier offset from the center frequency of the sync signal. The offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers. For example, the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the frequency position of the entire carrier can be known by the channel bandwidth of the carrier or the configuration information of the transmission bandwidth.
  • the UE 200 can obtain the center frequency of the synchronization signal by detecting the synchronization signal, and the center frequency of the carrier does not need to be an integer multiple of 100 kHz like LTE, that is, the channel gate of the carrier is not required to be defined. And the UE 200 does not need to know the center frequency of the carrier, and only needs to know the lowest frequency of the carrier or the offset of the center frequency of the highest frequency offset synchronization channel and the channel bandwidth or the transmission bandwidth of the carrier to know the frequency of the entire carrier. Location, as shown in Figure 4.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers.
  • the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • This embodiment relates to the frequency position of the sub-band.
  • the frequency position of the subband can be indicated in the following three ways:
  • the eNB 100 indicates the frequency location of the entire carrier, which may be indicated in the manner described in Embodiment 2 or other manners. Then, the frequency position of the sub-band can be indicated by a starting PRB index number and the length of the sub-band.
  • the starting PRB index number is one of the PRB index numbers on the entire carrier.
  • the subband length may be a number of consecutively distributed PRBs or subcarriers on a carrier.
  • the subcarrier spacing of the subcarriers may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the eNB 100 does not need to indicate the frequency position of the entire carrier, but refers to the center frequency of the synchronization signal as a reference, and indicates whether the lowest frequency or the highest frequency of the sub-band is higher than the center frequency of the synchronization signal or lower than the synchronization with a high/low indicator.
  • the center frequency of the signal indicates the minimum frequency of the subband or the maximum frequency offset of the center frequency of the synchronization signal by an offset, and then indicates the bandwidth of the subband. In this way, the eNB 100 can indicate the frequency position of the entire subband, as shown in FIG.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers. For example, the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the eNB 100 does not need to indicate the frequency position of the entire carrier, but refers to the center frequency of the synchronization signal as a reference, and indicates the minimum frequency of the carrier or the frequency of the highest frequency offset synchronization signal center frequency by an offset, with a starting PRB index number. Indicates the starting PRB position of the subband, and then indicates the bandwidth of the subband. In this way, the eNB 100 can indicate the frequency position of the entire subband, as shown in FIG.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the offset PRB and the starting PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers.
  • the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the frequency position of the subband can be obtained in the following three ways:
  • the UE 200 first obtains the frequency position of the entire carrier, and the manner of obtaining the UE 200 may be the manner described in Embodiment 2 or other manners. Then, by obtaining a starting PRB index number and the length of the subband, the frequency position of the subband can be known.
  • the starting PRB index number is one of the PRB index numbers on the entire carrier.
  • the subband length may be a number of consecutively distributed PRBs or subcarriers on a carrier.
  • the subcarrier spacing of the subcarriers may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the UE 200 does not need to know the frequency location of the entire carrier.
  • the UE 200 can know the center frequency of the synchronization signal by detecting the synchronization signal.
  • the high/low indicator By receiving the high/low indicator, it can be known whether the lowest frequency or the highest frequency of the sub-band is higher than the center frequency of the synchronization signal or lower than the center frequency of the synchronization signal; and the sub-band can be known by the received offset.
  • the lowest frequency or the highest frequency offsets the center frequency of the synchronization signal, and then the frequency position of the entire sub-band can be known by the received sub-band bandwidth, as shown in FIG.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers. For example, the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • the UE 200 does not need to know the frequency location of the entire carrier.
  • the UE 200 can know the center frequency of the synchronization signal by detecting the synchronization signal.
  • the initial PRB index of the subband can be known by the received initial PRB index number, and then the received sub-band is received. With the bandwidth, you can know the frequency position of the entire sub-band, as shown in Figure 6.
  • the offset may be in units of PRB or sub-carrier spacing of a reference.
  • the reference subcarrier spacing may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the subcarrier spacing of the offset PRB and the starting PRB may be a subcarrier spacing of the synchronization signal or other predefined subcarrier spacing or some default subcarrier spacing.
  • the offset may be measured in terms of the number of PRBs and the number of subcarriers.
  • the offset of the center frequency of the carrier offset synchronization signal center frequency is 1205 subcarriers, and the offset may be represented by 100 PRB+5 subcarriers at this time. That is, the integer part obtained by modulo 12 by the offset is the number of PRBs, and the remainder is the number of subcarriers.
  • the offset may be a certain bandwidth frequency value, for example, the offset of 0.025 MHz or other value.
  • the offset may be an integer multiple of a certain basic bandwidth frequency value, for example, the basic bandwidth has a frequency value of 0.025 MHz or other values, and the integer multiple may be taken as: -5, -4, - 3, -2, -1, 0, 1, 2, 3, 4, 5 may also be other values.
  • the eNB may configure the integer value by physical layer signaling or a primary information block MIB or a system information block SIB or a radio resource control RRC. The offset is obtained by multiplying the integer value by the basic bandwidth frequency value.
  • method 700 begins at step S710.
  • any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position are configured. Configuration may be performed using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • a synchronization signal is transmitted at the candidate frequency location, and the information of the configuration unit configuration is transmitted.
  • the candidate frequency locations may be determined according to a grid of a particular size and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the carrier center frequency can be indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location can be indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location may be indicated by a physical resource block PRB offset and a carrier bandwidth.
  • the frequency position of a certain sub-band on the carrier may be indicated by an indicator, a physical resource block PRB offset, and a sub-band length.
  • the frequency position of a certain sub-band on the carrier may be indicated by a physical resource block PRB offset, a starting PRB index, and a sub-band length.
  • the PRB is defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • Parameters for indicating the carrier center frequency and/or parameters for indicating the carrier frequency position may be configured by the MIB, parameters for indicating the frequency position of the subband in which the common search space is located are configured by the SIB, and the dedicated RRC letter is used.
  • the parameters for indicating the frequency position of the sub-band in which the UE-specific search space is located are configured.
  • method 700 ends at step S740.
  • FIG. 8 is a flow chart showing a method performed by a user equipment in accordance with one embodiment of the present application. As shown in FIG. 8, method 800 begins at step S810.
  • a synchronization signal is received from the candidate frequency location and configuration information is received.
  • any one or more of a carrier center frequency, a carrier frequency position, and a sub-band frequency position are extracted according to the configuration information.
  • the configuration information may be configured using any one or more of the following: a primary information block MIB, a system information block SIB, and dedicated radio resource control RRC signaling.
  • the candidate frequency location may be determined according to a grid of specific sizes and a reference subcarrier spacing, wherein the reference subcarrier spacing is dependent on a frequency range of the carrier.
  • the carrier center frequency can be indicated by an indicator and a physical resource block PRB offset.
  • the carrier frequency location may be indicated by an indicator, a physical resource block PRB offset, and a carrier bandwidth.
  • the carrier frequency location may be indicated by a physical resource block PRB offset and a carrier bandwidth.
  • the frequency location of a certain subband on the carrier can be indicated by an indicator, a physical resource block PRB offset, and a subband length.
  • the frequency location of a certain subband on the carrier may be indicated by a physical resource block PRB offset, a starting PRB index, and a subband length.
  • the PRB may be defined based on a default subcarrier spacing or a reference subcarrier spacing.
  • Parameters for indicating the carrier center frequency and/or parameters for indicating the carrier frequency position may be configured by the MIB
  • parameters for indicating the frequency position of the subband in which the common search space is located may be configured by the SIB, and used for indication
  • the parameters of the frequency location of the sub-band in which the UE-specific search space is located may be configured by dedicated RRC signaling.
  • method 800 ends at step S840.
  • the method of the present application and the apparatus involved have been described above in connection with the preferred embodiments. Those skilled in the art will appreciate that the methods shown above are merely exemplary. The methods of the present application are not limited to the steps and sequences shown above.
  • the network nodes and user equipment shown above may include more modules, for example, may also include modules that may be developed or developed in the future for base stations, or UEs, and the like.
  • the various logos shown above are merely exemplary and not limiting, and the application is not limited to specific cells as examples of such identifications. Many variations and modifications can be made by those skilled in the art in light of the teachings of the illustrated embodiments.
  • the above-described embodiments of the present application can be implemented by software, hardware, or a combination of both software and hardware.
  • the base station and various components within the user equipment in the above embodiments may be implemented by various devices including, but not limited to, analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, and programmable processing. , Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), and more.
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station refers to a mobile communication data and control switching center having a large transmission power and a relatively large coverage area, including resource allocation scheduling, data reception and transmission, and the like.
  • User equipment refers to a user mobile terminal, for example, a terminal device including a mobile phone, a notebook, etc., which can perform wireless communication with a base station or a micro base station.
  • the computer program product is a product having a computer readable medium encoded with computer program logic that, when executed on a computing device, provides related operations to implement The above technical solution of the present application.
  • the computer program logic When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in this application.
  • Such an arrangement of the present application is typically provided as software, code, and/or other data structures, such as one or more, that are arranged or encoded on a computer readable medium such as an optical medium (eg, CD-ROM), floppy disk, or hard disk.
  • Software or firmware or such a configuration may be installed on the computing device such that one or more processors in the computing device perform the technical solutions described in the embodiments of the present application.
  • each functional module or individual feature of the base station and terminal device used in each of the above embodiments may be implemented or executed by circuitry, typically one or more integrated circuits.
  • Circuitry designed to perform the various functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general purpose integrated circuits, field programmable gate arrays (FPGAs), or others.
  • a general purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine.
  • the above general purpose processor or each circuit may be configured by a digital circuit or may be configured by a logic circuit.
  • the present application can also use integrated circuits obtained using the advanced technology.
  • the program running on the device may be a program that causes a computer to implement the functions of the embodiments of the present application by controlling a central processing unit (CPU).
  • the program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory system.
  • a volatile memory such as a random access memory RAM
  • HDD hard disk drive
  • non-volatile memory such as a flash memory
  • a program for realizing the functions of the embodiments of the present application can be recorded on a computer readable recording medium.
  • the corresponding functions can be realized by causing a computer system to read programs recorded on the recording medium and execute the programs.
  • the so-called "computer system” herein may be a computer system embedded in the device, and may include an operating system or hardware (such as a peripheral device).
  • the "computer-readable recording medium” may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium of a short-term dynamic storage program, or any other recording medium readable by a computer.
  • circuitry e.g., monolithic or multi-chip integrated circuits.
  • Circuitry designed to perform the functions described in this specification can include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs), or other programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination of the above.
  • DSPs digital signal processors
  • ASICs application specific integrated circuits
  • FPGAs field programmable gate arrays
  • a general purpose processor may be a microprocessor or any existing processor, controller, microcontroller, or state machine.
  • the above circuit may be a digital circuit or an analog circuit. In the case of new integrated circuit technologies that replace existing integrated circuits due to advances in semiconductor technology, the present application can also be implemented using these new integrated circuit technologies.

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Abstract

本申请提供了一种基站，包括：配置单元，被设置为配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个；以及发送单元，被设置为在候选频率位置上发送同步信号，并发送所述配置单元配置的信息。配置单元采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。本申请还提供了一种用户设备和相应的方法。

Description

无线信号的频率位置指示方法、基站和用户设备 技术领域
本申请涉及无线通信技术领域，更具体地，本申请涉及同步信号、载波以及子带的频率位置的指示方法、基站和用户设备。
背景技术
2016年3月，在第三代合作伙伴计划(3rd Generation Partnership Project：3GPP)RAN#71次全会上，NTT DOCOMO提出了一个关于5G技术标准的新的研究项目(参见非专利文献：RP-160671：New SID Proposal：Study on New Radio Access Technology)，并获批准。该研究项目的目的是开发一个新的无线(New Radio：NR)接入技术以满足5G的所有使用场景、需求和部署环境。NR主要有三个使用场景：增强的移动宽带通信(Enhanced mobile broadband：eMBB)、大规模机器类通信(massive Machine type communication：mMTC)和超可靠低延迟通信(Ultra reliable and low latency communications：URLLC)。按照该研究项目的规划，NR的标准化分二个阶段进行：第一阶段的标准化工作将于2018年中期完成；第二阶段的标准化工作将于2019年底完成。第一阶段的标准规范要前向兼容于第二阶段的标准规范，而第二阶段的标准规范要建立在第一阶段的标准规范之上，并满足5G NR技术标准的所有要求。
2016年11月，在美国里诺举行的3GPP RAN1#87次会议上，达成以下共识：NR同步信号的频率栅可以取决于载波频率范围，至少对于载波频率大于6GHz的情况，同步信号的频率栅可以大于LTE的100kHz的信道栅。而且，对于一个NR小区，其同步信号的中心频率可以不同于NR载波的中心频率。
发明内容
本申请主要解决如何确定或指示NR同步信号、载波和子带的频率位置的问题。
根据本申请的一个方面，提供了一种基站，包括：配置单元，被设置为配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个；以及发送单元，被设置为在候选频率位置上发送同步信号，并发送所述配置单元配置的信息。所述配置单元采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个实施例中，所述配置单元被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
在一个实施例中，所述配置单元被设置为：通过指示符和物理资源块PRB偏移量来指示载波中心频率。
在一个实施例中，所述配置单元被设置为：通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。
在一个实施例中，所述配置单元被设置为：通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
在一个实施例中，所述配置单元被设置为：通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。
在一个实施例中，所述配置单元被设置为：通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
在一个实施例中，所述配置单元被设置为：基于缺省子载波间隔或参考子载波间隔来定义所述PRB。
在一个实施例中，所述配置单元被设置为：通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数；通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数；以及通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
根据本申请的另一个方面，提供了一种由基站执行的方法，包括：配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个；以及在候选频率位置上发送同步信号，并发送所述配置单元配置的信息。采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个实施例中，根据特定大小的栅格和参考子载波间隔来确定所述 候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
在一个实施例中，通过指示符和物理资源块PRB偏移量来指示载波中心频率。
在一个实施例中，通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。
在一个实施例中，通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
在一个实施例中，通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。
在一个实施例中，通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
在一个实施例中，基于缺省子载波间隔或参考子载波间隔来定义所述PRB。
在一个实施例中，通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数；通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数；以及通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
根据本申请的另一个方面，提供了一种用户设备UE，包括：接收单元，被设置为从候选频率位置接收同步信号，并接收配置信息；以及提取单元，被设置为根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。所述配置信息是采用以下任意一个或更多个来配置的：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个实施例中，所述提取单元被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
在一个实施例中，载波中心频率是通过指示符和物理资源块PRB偏移量来指示的。
在一个实施例中，载波频率位置是通过指示符、物理资源块PRB偏移量和载波带宽来指示的。
在一个实施例中，载波频率位置是通过物理资源块PRB偏移量和载波 带宽来指示的。
在一个实施例中，载波上的某一子带的频率位置是通过指示符、物理资源块PRB偏移量和子带长度来指示的。
在一个实施例中，载波上的某一子带的频率位置是通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示的。
在一个实施例中，所述PRB是基于缺省子载波间隔或参考子载波间隔来定义的。
在一个实施例中，用于指示载波中心频率的参数和/或用于指示载波频率位置的参数是通过MIB来配置的；用于指示公共搜索空间所在的子带的频率位置的参数是通过SIB来配置的；以及用于指示UE特有搜索空间所在的子带的频率位置的参数是通过专用RRC信令来配置的。
根据本申请的另一个方面，提供了一种由用户设备UE执行的方法，包括：从候选频率位置接收同步信号，并接收配置信息；以及根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。所述配置信息是采用以下任意一个或更多个来配置的：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个实施例中，根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
在一个实施例中，载波中心频率是通过指示符和物理资源块PRB偏移量来指示的。
在一个实施例中，载波频率位置是通过指示符、物理资源块PRB偏移量和载波带宽来指示的。
在一个实施例中，载波频率位置是通过物理资源块PRB偏移量和载波带宽来指示的。
在一个实施例中，载波上的某一子带的频率位置是通过指示符、物理资源块PRB偏移量和子带长度来指示的。
在一个实施例中，载波上的某一子带的频率位置是通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示的。
在一个实施例中，所述PRB是基于缺省子载波间隔或参考子载波间隔来定义的。
在一个实施例中，用于指示载波中心频率的参数和/或用于指示载波频 率位置的参数是通过MIB来配置的；用于指示公共搜索空间所在的子带的频率位置的参数是通过SIB来配置的；以及用于指示UE特有搜索空间所在的子带的频率位置的参数是通过专用RRC信令来配置的。
附图说明
通过下文结合附图的详细描述，本申请的上述和其它特征将会变得更加明显，其中：
图1是示出了根据本申请一个实施例的基站的框图。
图2是示出了根据本申请一个实施例的用户设备的框图。
图3是示出了根据本申请一个实施例的载波中心频率指示的示意图。
图4是示出了根据本申请一个实施例的载波频率位置指示的示意图。
图5是示出了根据本申请一个实施例的子带频率位置指示的示意图。
图6是示出了根据本申请一个实施例的子带频率位置指示的示意图。
图7是示出了根据本申请一个实施例的由基站执行的方法的流程图。
图8是示出了根据本申请一个实施例的由用户设备执行的方法的流程图。
具体实施方式
下面结合附图和具体实施方式对本公开进行详细阐述。应当注意，本公开不应局限于下文所述的具体实施方式。另外，为了简便起见，省略了对与本公开没有直接关联的公知技术的详细描述，以防止对本公开的理解造成混淆。
下面描述本申请涉及的部分术语，如未特别说明，本申请涉及的术语采用此处定义。此外，本申请以LTE、eLTE和NR为例进行说明。需要说明的是，本申请并不限于所述LTE、eLTE和NR，也可以用于其他无线通信系统，例如6G无线通信系统。
图1示出了根据本申请的一个实施例的基站100的框图。如图1所示，基站100包括配置单元110和发送单元120。本领域技术人员应理解，基站100还可以包括实现其功能所必需的其他功能单元，如各种处理器、存储器、射频信号处理单元、基带信号处理单元和其它物理下行信道发射处理单元 等等。然而为了简便，省略了这些公知元件的详细描述。
配置单元110被设置为配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。例如，配置单元110可以采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个示例中，配置单元110可以被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。例如，配置单元110可以被设置为：通过指示符和物理资源块PRB偏移量来指示载波中心频率。
在一个示例中，配置单元110可以被设置为：通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。备选地，配置单元110也可以被设置为：通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
在一个示例中，配置单元110可以被设置为：通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。备选地，配置单元110也可以被设置为：通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
在一个示例中，配置单元110可以被设置为：基于缺省子载波间隔或参考子载波间隔来定义PRB。
在一个示例中，配置单元110可以被设置为：通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数；通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数；以及通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
发送单元120被设置为在候选频率位置上发送同步信号，并发送所述配置单元配置的信息。
图2示出了根据本申请的一个实施例的用户设备UE 200的框图。如图2所示，UE 200包括接收单元210和提取单元220。本领域技术人员应理解，UE 200还可以包括实现其功能所必需的其他功能单元，如各种处理器、存储器、射频信号处理单元、基带信号处理单元和其它物理上行信道发射处理单元等等。然而为了简便，省略了这些公知元件的详细描述。
接收单元210被设置为从候选频率位置接收同步信号，并接收配置信 息。
提取单元220被设置为根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。例如，所述配置信息可以采用以下任意一个或更多个来配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在一个示例中，提取单元220可以被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。例如，载波中心频率是通过指示符和物理资源块PRB偏移量来指示的。
在一个示例中，载波频率位置是通过指示符、物理资源块PRB偏移量和载波带宽来指示的。备选地，载波频率位置可以通过物理资源块PRB偏移量和载波带宽来指示。
在一个示例中，载波上的某一子带的频率位置是通过指示符、物理资源块PRB偏移量和子带长度来指示的。备选地，载波上的某一子带的频率位置可以通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示。
在一个示例中，PRB是基于缺省子载波间隔或参考子载波间隔来定义的。
在一个示例中，用于指示载波中心频率的参数和/或用于指示载波频率位置的参数是通过MIB来配置的；用于指示公共搜索空间所在的子带的频率位置的参数是通过SIB来配置的；以及用于指示UE特有搜索空间所在的子带的频率位置的参数是通过专用RRC信令来配置的。
下面，通过若干具体实施例来描述基站100和UE 200的操作。
实施例1
本实施例涉及同步信号中心频率的候选频率位置或同步信号的频率栅。
基站100的操作
在LTE中，同步信号的中心频率和载波的中心频率位于相同的位置，即这2个中心频率是一样的。基站(eNB)100在同步信号的某一候选的频率位置上发送同步信号，再通过MIB通知该载波的下行带宽的大小。
在LTE中，载波的信道带宽有6种：1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz。在MIB中由3比特信息表示。而在NR中，同步信号的中心频率可以与载波的中心频率不一致。而且，载波的信道带宽可以达到1GHz以上，而为了载波信道带宽取值的灵活性，有可能不会象LTE那样将信道带宽量化为几个具体的取值，而可能是任意的数值。另外，可以用物理资源块(PRB)的数量表示载波信道的传输带宽的大小。在频域上，一个PRB含有12个子载波。在NR中，可以在同一载波上支持多个子带，不同的子带采用不同的子载波间隔。由于子载波间隔的不同，同样含有12个子载波的一个PRB，其物理带宽的大小是不同的。例如，对于子载波间隔为15kHz的子带，其一个PRB的物理带宽为180kHz；而子载波间隔为60kHz的子带，其一个PRB的物理带宽将为720kHz。因此，对于同一信道带宽的载波或子带，如果用PRB数量来表示载波或子带的带宽，则相对于不同的子载波间隔大小，其含有的PRB数量不同。例如，对于某一带宽的载波，如果采用15kHz的子载波间隔来计算该载波带宽含有的PRB数，并得到该载波带宽的PRB数为100个；则采用60kHz的子载波间隔时，其载波带宽的PRB数将为25个。
在3GPP有关NR的讨论中，已就可采用的子载波间隔达成共识，即为15*2 nkHz。其中，n为整数。因此，NR的子载波间隔可以为：3.75kHz、7.5kHz、15kHz、30kHz、60kHz、120kHz等等。如果同步信号的子载波间隔可以采用以上任何子载波间隔值，则eNB在每一同步信号的候选频率位置可以采用多种子载波间隔中的一种子载波间隔来发送同步信号。这样，UE需要在每一同步信号的候选频率位置盲检多种子载波间隔的同步信号，因此将增加UE的复杂度和同步过程所需的时间。所以，可以根据载波的频率范围不同预先定义一种或多种同步信号的子载波间隔。如下表1所示，在某一载波频率范围只定义一种子载波间隔。这样，eNB在某一同步信号的候选频率位置只需发送一种子载波间隔的同步信号。从而减少UE的复杂度，并缩短UE的同步时间。
Figure PCTCN2017117175-appb-000001
表1
如果在某一频率范围预定义了多种子载波间隔，那么eNB在某次发送同步信号时只能采用多种子载波间隔中的一种子载波间隔来发送该同步信号。而UE则通过盲检来确定所接收的同步信号的子载波间隔。
备选地，同步信号的子载波间隔可以是某一缺省的子载波间隔。
在LTE中，同步信号的中心频率与载波的中心频率位于同一频率位置，其同步信号中心频率的候选频率位置或频率栅(frequency raster)为100kHz。在LTE中，频率栅也称为信道栅(channel raster)。在NR中，其同步信号中心频率的候选频率位置或频率栅(frequency raster)应为100kHz的整数倍，而且还应该是一个PRB物理带宽的整数倍。对某一同步信号的子载波间隔而言，同步信号中心频率的候选频率位置或频率栅应该为100kHz和12*同步信号子载波间隔的最小公倍数，也就是说同步信号的中心频率是100kHz和12*同步信号子载波间隔的最小公倍数的整数倍。例如，同步信号子载波间隔为15kHz，则其中心频率的候选频率位置或频率栅为900kHz，即同步信号的中心频率为900kHz的整数倍。针对不同载波的频率范围可得到如下表2所示的同步信号的中心频率的候选频率位置或频率栅。备选地，同步信号中心频率的候选频率位置或频率栅应该为100kHz和同步信号子载波间隔的最小公倍数，也就是说同步信号的中心频率是100kHz和同步信号子载波间隔的最小公倍数的整数倍。例如，同步信号子载波间隔为15kHz，则其中心频率的候选频率位置或频率栅为300kHz，即同步信号的中心频率为300kHz的整数倍。针对不同载波的频率范围可得到如下表3所示的同步信号的中心频率的候选频率位置或频率栅。
所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
Figure PCTCN2017117175-appb-000002
表2
Figure PCTCN2017117175-appb-000003
表3
备选地，同步信号中心频率的候选频率位置或频率栅由载波的频率范围或载波的频带所决定。如下表4所示，由载波的频率范围或载波所处的频带可以得到同步信号的频率栅或同步信号的中心频率的候选频率位置。例如，当载波频率为3～6GHz时，同步信号的中心频率的候选频率位置或频率栅为1800kHz，即同步信号的中心频率为1800kHz的整数倍。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
载波频率范围 0～3GHz 3～6GHz 6～30GHz 30～60GHz 60GHz以上
同步信号频率栅 900kHz 1800kHz 3600kHz 7200kHz 14400kHz
表4
备选地，同步信号中心频率的候选频率位置或频率栅由同步信号的子载波间隔所决定。如下表5所示，由同步信号的子载波间隔可以得到同步 信号的频率栅或同步信号的中心频率的候选频率位置。例如，当同步信号的子载波间隔为30kHz时，同步信号的中心频率的候选频率位置或频率栅为1800kHz，即同步信号的中心频率为1800kHz的整数倍。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
Figure PCTCN2017117175-appb-000004
表5
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的子载波间隔和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100 kHz的信道栅、同步信号的子载波间隔和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100kHz的信道栅和同步信号的子载波间隔所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或 者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100kHz的信道栅和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
UE 200的操作
在LTE中，同步信号的中心频率和载波的中心频率位于相同的位置，即这2个中心频率是一样的。用户设备(UE)200通过检测同步信号可以得到同步信号的中心频率信息，同时也就得到了该载波的中心频率信息。再通过MIB可以知道该载波的下行带宽的大小。
在LTE中，载波的信道带宽有6种：1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz。在MIB中由3比特信息表示。而在NR中，同步信号的中心频率可以与载波的中心频率不一致，即通过检测同步信号得到同步信号的中心频率后，并不能知道载波的中心频率。而且，载波的信道带宽可以达到1GHz以上，而为了载波信道带宽取值的灵活性，有可能不会象LTE那样将信道带宽量化为几个具体的取值，而可能是任意的数值。另外，可以用物理资源块(PRB)的数量表示载波信道的传输带宽的大小。在频域上，一个PRB含有12个子载波。在NR中，可以在同一载波上支持多个子带，不同的子带采用不同的子载波间隔。由于子载波间隔的不同，同样含有12个子载波的一个PRB，其物理带宽的大小是不同。例如，对于子载波间隔为15kHz的子带，其一个PRB的物理带宽为180kHz；而子载波间隔为60kHz的子带，其一个PRB的物理带宽将为720kHz。因此，对于同一信道带宽的载波或子带，如果用PRB数量来表示载波或子带的带宽，则相对于不同的子载波间隔大小，其含有的PRB数量不同。例如，对于某一带宽的载波，如果采用15kHz的子载波间隔来计算该载波带宽含有的PRB数， 并得到该载波带宽的PRB数为100个；则采用60kHz的子载波间隔时，其载波带宽的PRB数将为25个。
在3GPP有关NR的讨论中，已就可采用的子载波间隔达成共识，即为15*2 nkHz。其中，n为整数。NR的子载波间隔可以为：3.75kHz、7.5kHz、15kHz、30kHz、60kHz、120kHz等等。如果同步信号的子载波间隔可以采用以上任何子载波间隔值，则UE在每一同步信号的候选频率位置需要盲检多种子载波间隔的同步信号，这样将增加UE的复杂度和同步过程所需的时间。因此，可以根据载波的频率范围不同预先定义一种或多种同步信号的子载波间隔。如上表1所示，在某一载波频率范围只定义一种子载波间隔。这样，UE在某一同步信号的候选频率位置只需检测一种子载波间隔的同步信号。从而减少UE的复杂度，并缩短UE的同步时间。
如果在某一频率范围预定义了多种子载波间隔，那么eNB在某次发送同步信号时只能采用多种子载波间隔中的一种子载波间隔来发送该同步信号。而UE则通过盲检来确定所接收的同步信号的子载波间隔。
备选地，同步信号的子载波间隔可以是某一缺省的子载波间隔。
在LTE中，同步信号的中心频率与载波的中心频率位于同一频率位置，其同步信号中心频率的候选频率位置或频率栅(frequency raster)为100kHz。在LTE中，频率栅也称为信道栅(channel raster)。在NR中，其同步信号中心频率的候选频率位置或频率栅(frequency raster)应为100kHz的整数倍，而且还应该是一个PRB物理带宽的整数倍。对某一同步信号的子载波间隔而言，同步信号中心频率的候选频率位置或频率栅应该为100kHz和12*同步信号子载波间隔的最小公倍数。例如，同步信号子载波间隔为15kHz，则其中心频率的候选频率位置或频率栅为900kHz，即同步信号的中心频率为900kHz的整数倍。针对不同载波的频率范围可得到如上表2所示的同步信号的中心频率的候选频率位置或频率栅。备选地，同步信号中心频率的候选频率位置或频率栅应该为100kHz和同步信号子载波间隔的最小公倍数，也就是说同步信号的中心频率是100kHz和同步信号子载波间隔的最小公倍数的整数倍。例如，同步信号子载波间隔为15kHz，则其中心频率的候选频率位置或频率栅为300kHz，即同步信号的中心频率为300kHz的整数倍。针对不同载波的频率范围可得到如上表3所示的同步信号的中心频率的候选频率位置或频率栅。
所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅由载波的频率范围或载波的频带所决定。如上表4所示，由载波的频率范围或载波所处的频带可以得到同步信号的频率栅或同步信号的中心频率的候选频率位置。例如，当载波频率为3～6GHz时，同步信号的中心频率的候选频率位置或频率栅为1800kHz，即同步信号的中心频率为1800kHz的整数倍。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅由同步信号的子载波间隔所决定。如上表5所示，由同步信号的子载波间隔可以得到同步信号的频率栅或同步信号的中心频率的候选频率位置。例如，当同步信号的子载波间隔为30kHz时，同步信号的中心频率的候选频率位置或频率栅为1800kHz，即同步信号的中心频率为1800kHz的整数倍。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的子载波间隔和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100kHz的信道栅、同步信号的子载波间隔和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100kHz的信道栅和同步信号的子载波间隔所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
备选地，同步信号中心频率的候选频率位置或频率栅可以由同步信号的100kHz的信道栅和载波频率范围所决定。所述同步信号中心频率的候选频率位置是指在该频率上或频率位置上可以发送同步信号；或者说是可用于发送同步信号的频率或频率位置。所述候选频率位置是满足某一条件的可用于发送同步信号的频率或频率位置的集合，也可以将同步信号中心频率的候选频率位置称为同步信号的频率栅或信道栅。
本实施例同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。
本实施例用于确定同步信号中心频率的候选频率位置或同步信号的频率栅的方法也可以应用于确定载波的中心频率或载波的信道栅或频率栅。
备选地，载波的中心频率的候选频率位置之间的间隔可以大于或小于或等于同步信号中心频率的候选频率位置之间的间隔，而且两者间必须是整数倍的关系。或者载波的频率栅或信道栅可以大于或小于或等于同步信号中心频率的频率栅或信道栅，而且两者间必须是整数倍的关系。
实施例2
本实施例涉及载波中心频率和载波频率位置。
基站100的操作
在LTE中，同步信号的中心频率和载波的中心频率位于相同的位置，即这2个中心频率是一样的。基站(eNB)100在同步信号的某一候选的频率位置上发送同步信号，再通过MIB通知该载波的下行带宽的大小。
在LTE中，载波的信道带宽有6种：1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz。在MIB中由3比特信息表示。而在NR中，同步信号的中心频率可以与载波的中心频率不一致，即通过检测同步信号得到同步信号的中心频率后，并不能知道载波的中心频率。而且，载波的信道带宽可以达到1GHz以上，而为了载波信道带宽取值的灵活性，有可能不会象LTE那样将信道带宽量化为几个具体的取值，而可能是任意的数值。另外，可以用物理资源块(PRB)的数量表示载波信道的传输带宽的大小。在频域上，一个PRB含有12个子载波。在NR中，可以在同一载波上支持多个子带，不同的子带采用不同的子载波间隔。由于子载波间隔的不同，同样含有12个子载波的一个PRB，其物理带宽的大小是不同。例如，对于子载波间隔为15kHz的子带，其一个PRB的物理带宽为180kHz；而子载波间隔为60kHz的子带，其一个PRB的物理带宽将为720kHz。因此，对于同一信道带宽的载波或子带，如果用PRB数量来表示载波或子带的带宽，则相对于不同的子载波间隔大小，其含有的PRB数量不同。例如，对于某一带宽的载波，如果采用15kHz的子载波间隔来计算该载波带宽含有的PRB数，并得到该载波带宽的PRB数为100个；则采用60kHz的子载波间隔时，其载波带宽的PRB数将为25个。
在NR中，基站(eNB)100在同步信号的某一候选的频率位置上发送同步信号，而载波的中心频率可以依据同步信号的中心频率来确定。如图3所示，以同步信号的中心频率为参照，以一个高/低指示符指示载波的中心频率是高于同步信号的中心频率还是低于同步信号的中心频率，并且由一偏移量指示载波的中心频率偏移同步信号中心频率的大小。该偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载 波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
例如，载波的频率位置可以由以下2种方式来指示：
方式1
基站(eNB)100在同步信号的某一候选的频率位置上发送同步信号。而载波的中心频率依据同步信号的中心频率来确定。如图3所示，以同步信号的中心频率为参照，以一个高/低指示符指示载波的中心频率是高于同步信号的中心频率还是低于同步信号的中心频率，并且由一偏移量指示载波的中心频率偏移同步信号中心频率的大小。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带 宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
基站(eNB)100指示载波的中心频率后，再通过载波的信道带宽或传输带宽的配置信息来通知整个载波的频率位置。
方式2
基站(eNB)100在同步信号的某一候选的频率位置上发送同步信号。而不需要通知载波的中心频率，只需要通知载波的最低频率或最高频率偏移同步信道的中心频率的偏移量以及载波的信道带宽或传输带宽的大小就可以通知整个载波的频率位置，如图4所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
UE 200的操作
在LTE中，同步信号的中心频率和载波的中心频率位于相同的位置，即这2个中心频率是一样的。用户设备(UE)通过检测同步信号可以得到同步信号的中心频率信息，同时也就得到了该载波的中心频率信息。再通过MIB可以知道该载波的下行带宽的大小。
在LTE中，载波的信道带宽有6种：1.4MHz、3MHz、5MHz、10MHz、15MHz和20MHz。在MIB中由3比特信息表示。而在NR中，同步信号的中心频率可以与载波的中心频率不一致，即通过检测同步信号得到同步信号的中心频率后，并不能知道载波的中心频率。而且，载波的信道带宽可以达到1GHz以上，而为了载波信道带宽取值的灵活性，有可能不会象LTE那样将信道带宽量化为几个具体的取值，而可能是任意的数值。另外，可以用物理资源块(PRB)的数量表示载波信道的传输带宽的大小。在频域上，一个PRB含有12个子载波。在NR中，可以在同一载波上支持多个子带，不同的子带采用不同的子载波间隔。由于子载波间隔的不同，同样含有12个子载波的一个PRB，其物理带宽的大小是不同。例如，对于子载波间隔为15kHz的子带，其一个PRB的物理带宽为180kHz；而子载波间隔为60kHz的子带，其一个PRB的物理带宽将为720kHz。因此，对于同一信道带宽的载波或子带，如果用PRB数量来表示载波或子带的带宽，则相对于不同的子载波间隔大小，其含有的PRB数量不同。例如，对于某一带宽的载波，如果采用15kHz的子载波间隔来计算该载波带宽含有的PRB数，并得到该载波带宽的PRB数为100个；则采用60kHz的子载波间隔时，其载波带宽的PRB数将为25个。
在NR中，UE 200通过检测同步信号可以得到同步信号的中心频率，而载波的中心频率并不需要象LTE那样为100kHz的整数倍，即不需要定义载波的信道栅。只需要依据同步信号的中心频率来确定载波的中心频率。如图3所示，以同步信号的中心频率为参照，以一个高/低指示符指示载波的中心频率是高于同步信号的中心频率还是低于同步信号的中心频率，并且由一偏移量指示载波的中心频率偏移同步信号中心频率的大小。该偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔 或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
例如，载波的频率位置可以由以下2种方式获得：
方式1
UE 200通过检测同步信号可以得到同步信号的中心频率，而载波的中心频率并不需要象LTE那样为100kHz的整数倍，即不需要定义载波的信道栅。只需要依据同步信号的中心频率来确定载波的中心频率。如图3所示，以同步信号的中心频率为参照，以一个高/低指示符指示载波的中心频率是高于同步信号的中心频率还是低于同步信号的中心频率，并且由一偏移量指示载波的中心频率偏移同步信号中心频率的大小。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以 是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
UE 200得到载波的中心频率后，再由载波的信道带宽或传输带宽的配置信息就可以知道整个载波的频率位置。
方式2
UE 200通过检测同步信号可以得到同步信号的中心频率，而载波的中心频率并不需要象LTE那样为100kHz的整数倍，即不需要定义载波的信道栅。并且UE 200也不需要知道载波的中心频率，只需要知道载波的最低频率或最高频率偏移同步信道的中心频率的偏移量以及载波的信道带宽或传输带宽的大小就可以知道整个载波的频率位置，如图4所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
实施例3
本实施例涉及子带的频率位置。
基站100的操作
可以采用以下三种方式指示子带的频率位置：
方式1
eNB 100指示整个载波的频率位置，其指示方式可以是实施例2中所述的方式或其它方式。然后，通过一个起始PRB索引号和子带的长度就可以指示出子带的频率位置。所述起始PRB索引号是整个载波上的PRB索引号之一。所述子带长度可以是载波上连续分布的PRB数或子载波数。所述子载波的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。
方式2
eNB 100不需要指示整个载波的频率位置，而是以同步信号的中心频率为参照，以一个高/低指示符指示子带的最低频率或最高频率是高于同步信号的中心频率还是低于同步信号的中心频率，以一偏移量指示子带的最低频率或最高频率偏移同步信号中心频率的大小，再指示出子带的带宽。这样，eNB 100就可以指示出整个子带的频率位置，如图5所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025 MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
方式3
eNB 100不需要指示整个载波的频率位置，而是以同步信号的中心频率为参照，以一偏移量指示载波的最低频率或最高频率偏移同步信号中心频率的大小，以一起始PRB索引号指示出子带起始PRB位置，再指示出子带的带宽。这样，eNB 100就可以指示出整个子带的频率位置，如图6所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述偏移PRB和起始PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
UE 200的操作
可以通过以下三种方式得到子带的频率位置：
方式1
UE 200先获得整个载波的频率位置，其获取方式可以是实施例2中所述的方式或其它方式。然后，获得一个起始PRB索引号和子带的长度就可以知道子带的频率位置。所述起始PRB索引号是整个载波上的PRB索引号之一。所述子带长度可以是载波上连续分布的PRB数或子载波数。所述子载波的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。
方式2
UE 200不需要知道整个载波的频率位置。UE 200通过检测同步信号可以知道同步信号的中心频率。通过接收到的高/低指示符可以知道子带的最低频率或最高频率是高于同步信号的中心频率还是低于同步信号的中心频率；而通过接收到的一偏移量可以知道子带的最低频率或最高频率偏移同步信号中心频率的大小，再通过接收到的子带带宽就可以知道整个子带的频率位置，如图5所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
方式3
UE 200不需要知道整个载波的频率位置。UE 200通过检测同步信号可以知道同步信号的中心频率。通过接收的一偏移量可以知道载波的最低频率或最高频率偏移同步信号中心频率的大小，通过接收到的一起始PRB索引号可以知道子带的起始PRB位置，再通过接收到的子带带宽就可以知道整个子带的频率位置，如图6所示。所述偏移量可以以PRB为计量单位或以某一参考的子载波间隔为计量单位。所述参考子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。而所述偏移PRB和起始PRB的子载波间隔可以是同步信号的子载波间隔或者其它预定义的子载波间隔或者是某一缺省的子载波间隔。备选地，所述偏移量可以以PRB数和子载波数来计量。例如，载波的中心频率偏移同步信号中心频率的偏移量为1205个子载波，则此时所述的偏移量可以以100个PRB+5个子载波来表示。即以偏移量来模12所得的整数部分为PRB数，余数部分为子载波数。备选地，所述偏移量可以是某一带宽频率值，例如，所述偏移量0.025MHz或其它数值。或者，所述偏移量可以是某一基本带宽频率值的整数倍，例如，所述基本带宽的频率值为0.025MHz或其它数值，而整数倍值可以取为：-5、-4、-3、-2、-1、0、1、2、3、4、5，也可以是其它数值。eNB可以通过物理层信令或主信息块MIB或系统信息块SIB或无线资源控制RRC来配置所述整数值。再由所述整数值乘以所述的基本带宽频率值得到所述的偏移量。
图7是示出了根据本申请一个实施例的由基站执行的方法的流程图。如图7所示，方法700在步骤S710处开始。
在步骤S720处，对载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个进行配置。可以采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
在步骤S730处，在候选频率位置上发送同步信号，并发送所述配置单元配置的信息。
优选地，可以根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
优选地，可以通过指示符和物理资源块PRB偏移量来指示载波中心频率。
优选地，可以通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。备选地，可以通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
优选地，可以通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。备选地，可以通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
优选地，基于缺省子载波间隔或参考子载波间隔来定义所述PRB。可以通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数，通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数，以及通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
最后，方法700在步骤S740处结束。
图8是示出了根据本申请一个实施例的由用户设备执行的方法的流程图。如图8所示，方法800在步骤S810处开始。
在步骤S820处，从候选频率位置接收同步信号，并接收配置信息。
在步骤S830处，根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。所述配置信息可以是采用以下任意一个或更多个来配置的：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
优选地，所述候选频率位置可以根据特定大小的栅格和参考子载波间隔来确定，其中所述参考子载波间隔取决于载波的频率范围。
优选地，载波中心频率可以通过指示符和物理资源块PRB偏移量来指示。
优选地，载波频率位置可以通过指示符、物理资源块PRB偏移量和载波带宽来指示。备选地，载波频率位置可以通过物理资源块PRB偏移量和 载波带宽来指示。
优选地，载波上的某一子带的频率位置可以通过指示符、物理资源块PRB偏移量和子带长度来指示。备选地，载波上的某一子带的频率位置可以通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示。
优选地，所述PRB可以基于缺省子载波间隔或参考子载波间隔来定义。用于指示载波中心频率的参数和/或用于指示载波频率位置的参数可以通过MIB来配置，用于指示公共搜索空间所在的子带的频率位置的参数可以通过SIB来配置，以及用于指示UE特有搜索空间所在的子带的频率位置的参数可以通过专用RRC信令来配置。
最后，方法800在步骤S840处结束。
上文已经结合优选实施例对本申请的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的。本申请的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本申请并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
应该理解，本申请的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”是指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”是指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外，这里所公开的本申请的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计 算机程序逻辑提供相关的操作以实现本申请的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本申请实施例所述的操作(方法)。本申请的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本申请实施例所描述的技术方案。
此外，上述每个实施例中所使用的基站和终端设备的每个功能模块或各个特征可以由电路实现或执行，所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器，或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置，或者可以由逻辑电路配置。此外，当由于半导体技术的进步，出现了能够替代目前的集成电路的先进技术时，本申请也可以使用利用该先进技术得到的集成电路。
尽管以上已经结合本申请的优选实施例示出了本申请，但是本领域的技术人员将会理解，在不脱离本申请的精神和范围的情况下，可以对本申请进行各种修改、替换和改变。因此，本申请不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。
运行在根据本申请的设备上的程序可以是通过控制中央处理单元(CPU)来使计算机实现本申请的实施例功能的程序。该程序或由该程序处理的信息可以临时存储在易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器系统中。
用于实现本申请各实施例功能的程序可以记录在计算机可读记录介质上。可以通过使计算机系统读取记录在所述记录介质上的程序并执行这些程序来实现相应的功能。此处的所谓“计算机系统”可以是嵌入在该设备中的计算机系统，可以包括操作系统或硬件(如外围设备)。“计算机可读 记录介质”可以是半导体记录介质、光学记录介质、磁性记录介质、短时动态存储程序的记录介质、或计算机可读的任何其他记录介质。
用在上述实施例中的设备的各种特征或功能模块可以通过电路(例如，单片或多片集成电路)来实现或执行。设计用于执行本说明书所描述的功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、或其他可编程逻辑器件、分立的门或晶体管逻辑、分立的硬件组件、或上述器件的任意组合。通用处理器可以是微处理器，也可以是任何现有的处理器、控制器、微控制器、或状态机。上述电路可以是数字电路，也可以是模拟电路。因半导体技术的进步而出现了替代现有集成电路的新的集成电路技术的情况下，本申请也可以使用这些新的集成电路技术来实现。
如上，已经参考附图对本申请的实施例进行了详细描述。但是，具体的结构并不局限于上述实施例，本申请也包括不偏离本申请主旨的任何设计改动。另外，可以在权利要求的范围内对本申请进行多种改动，通过适当地组合不同实施例所公开的技术手段所得到的实施例也包含在本申请的技术范围内。此外，上述实施例中所描述的具有相同效果的组件可以相互替代。

Claims (36)

  1. 一种基站，包括：
    配置单元，被设置为配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个；以及
    发送单元，被设置为在候选频率位置上发送同步信号，并发送所述配置单元配置的信息；
    其中，所述配置单元采用以下任意一个或更多个来进行配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
  2. 根据权利要求1所述的基站，其中，所述配置单元被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
  3. 根据权利要求1所述的基站，其中，所述配置单元被设置为：通过指示符和物理资源块PRB偏移量来指示载波中心频率。
  4. 根据权利要求1所述的基站，其中，所述配置单元被设置为：通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。
  5. 根据权利要求1所述的基站，其中，所述配置单元被设置为：通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
  6. 根据权利要求1所述的基站，其中，所述配置单元被设置为：通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。
  7. 根据权利要求1所述的基站，其中，所述配置单元被设置为：通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
  8. 根据权利要求3-7中任意一项所述的基站，其中，所述配置单元被设置为：基于缺省子载波间隔或参考子载波间隔来定义所述PRB。
  9. 根据权利要求3-7中任意一项所述的基站，其中，所述配置单元被设置为：
    通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数；
    通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数； 以及
    通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
  10. 一种由基站执行的方法，包括：
    配置载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个；以及
    在候选频率位置上发送同步信号，并发送所述配置单元配置的信息；
    其中，采用以下任意一个或更多个来进行所述配置：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
  11. 根据权利要求10所述的方法，其中，根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
  12. 根据权利要求10所述的方法，其中，通过指示符和物理资源块PRB偏移量来指示载波中心频率。
  13. 根据权利要求10所述的方法，其中，通过指示符、物理资源块PRB偏移量和载波带宽来指示载波频率位置。
  14. 根据权利要求10所述的方法，其中，通过物理资源块PRB偏移量和载波带宽来指示载波频率位置。
  15. 根据权利要求10所述的方法，其中，通过指示符、物理资源块PRB偏移量和子带长度来指示载波上的某一子带的频率位置。
  16. 根据权利要求10所述的方法，其中，通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示载波上的某一子带的频率位置。
  17. 根据权利要求12-16中任意一项所述的方法，其中，基于缺省子载波间隔或参考子载波间隔来定义所述PRB。
  18. 根据权利要求12-16中任意一项所述的方法，其中，
    通过MIB来配置用于指示载波中心频率的参数和/或用于指示载波频率位置的参数；
    通过SIB来配置用于指示公共搜索空间所在的子带的频率位置的参数；以及
    通过专用RRC信令来配置用于指示UE特有搜索空间所在的子带的频率位置的参数。
  19. 一种用户设备UE，包括：
    接收单元，被设置为从候选频率位置接收同步信号，并接收配置信息；以及
    提取单元，被设置为根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。
    其中，所述配置信息是采用以下任意一个或更多个来配置的：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
  20. 根据权利要求19所述的UE，其中，所述提取单元被设置为：根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
  21. 根据权利要求19所述的UE，其中，载波中心频率是通过指示符和物理资源块PRB偏移量来指示的。
  22. 根据权利要求19所述的UE，其中，载波频率位置是通过指示符、物理资源块PRB偏移量和载波带宽来指示的。
  23. 根据权利要求19所述的UE，其中，载波频率位置是通过物理资源块PRB偏移量和载波带宽来指示的。
  24. 根据权利要求19所述的UE，其中，载波上的某一子带的频率位置是通过指示符、物理资源块PRB偏移量和子带长度来指示的。
  25. 根据权利要求19所述的UE，其中，载波上的某一子带的频率位置是通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示的。
  26. 根据权利要求21-25中任意一项所述的UE，其中，所述PRB是基于缺省子载波间隔或参考子载波间隔来定义的。
  27. 根据权利要求21-25中任意一项所述的UE，其中，
    用于指示载波中心频率的参数和/或用于指示载波频率位置的参数是通过MIB来配置的；
    用于指示公共搜索空间所在的子带的频率位置的参数是通过SIB来配置的；以及
    用于指示UE特有搜索空间所在的子带的频率位置的参数是通过专用RRC信令来配置的。
  28. 一种由用户设备UE执行的方法，包括：
    从候选频率位置接收同步信号，并接收配置信息；以及
    根据所述配置信息来提取载波中心频率、载波频率位置以及子带频率位置中的任意一个或更多个。
    其中，所述配置信息是采用以下任意一个或更多个来配置的：主信息块MIB、系统信息块SIB、以及专用无线资源控制RRC信令。
  29. 根据权利要求28所述的方法，其中，根据特定大小的栅格和参考子载波间隔来确定所述候选频率位置，其中所述参考子载波间隔取决于载波的频率范围。
  30. 根据权利要求28所述的方法，其中，载波中心频率是通过指示符和物理资源块PRB偏移量来指示的。
  31. 根据权利要求28所述的方法，其中，载波频率位置是通过指示符、物理资源块PRB偏移量和载波带宽来指示的。
  32. 根据权利要求28所述的方法，其中，载波频率位置是通过物理资源块PRB偏移量和载波带宽来指示的。
  33. 根据权利要求28所述的方法，其中，载波上的某一子带的频率位置是通过指示符、物理资源块PRB偏移量和子带长度来指示的。
  34. 根据权利要求28所述的方法，其中，载波上的某一子带的频率位置是通过物理资源块PRB偏移量、起始PRB索引和子带长度来指示的。
  35. 根据权利要求30-34中任意一项所述的方法，其中，所述PRB是基于缺省子载波间隔或参考子载波间隔来定义的。
  36. 根据权利要求30-34中任意一项所述的方法，其中，
    用于指示载波中心频率的参数和/或用于指示载波频率位置的参数是通过MIB来配置的；
    用于指示公共搜索空间所在的子带的频率位置的参数是通过SIB来配置的；以及
    用于指示UE特有搜索空间所在的子带的频率位置的参数是通过专用RRC信令来配置的。
PCT/CN2017/117175 2017-01-09 2017-12-19 无线信号的频率位置指示方法、基站和用户设备 WO2018126886A1 (zh)

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