WO2015018014A1 - 一种数据传输的方法、装置和系统 - Google Patents

一种数据传输的方法、装置和系统 Download PDF

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Publication number
WO2015018014A1
WO2015018014A1 PCT/CN2013/081030 CN2013081030W WO2015018014A1 WO 2015018014 A1 WO2015018014 A1 WO 2015018014A1 CN 2013081030 W CN2013081030 W CN 2013081030W WO 2015018014 A1 WO2015018014 A1 WO 2015018014A1
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WO
WIPO (PCT)
Prior art keywords
frequency resource
frequency
information
terminal
base station
Prior art date
Application number
PCT/CN2013/081030
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English (en)
French (fr)
Inventor
栗忠峰
卢建民
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201380001592.2A priority Critical patent/CN104521286B/zh
Priority to PCT/CN2013/081030 priority patent/WO2015018014A1/zh
Publication of WO2015018014A1 publication Critical patent/WO2015018014A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method, apparatus, and system. Background technique
  • narrow-band terminals are gradually emerging, especially based on machine communication.
  • MTC machine type communication, MTC
  • Typical MTC applications can include environmental monitoring, smart meter reading, and more.
  • the characteristics of the narrowband terminal are that the transmitted data packet is small, the communication period is long, the cost requirement is low, and the number is larger.
  • the transmission bandwidth configuration of the narrowband terminal is much lower than that of the ordinary terminal, and the transmission bandwidth configuration of the ordinary terminal is reachable.
  • the maximum transmission bandwidth configuration of the base station on a single carrier, that is, 100 resource blocks (RBs), the transmission bandwidth configuration of the narrowband terminal is generally 6 RBs, which is much smaller than 100 RBs.
  • the subframe transmitted to the terminal includes downlink control information, and the downlink control information indicates that the terminal is transmitting bandwidth.
  • Data extraction is performed on at least one RB on the configuration.
  • the normal terminal receives the RBs in the entire transmission bandwidth configuration, and extracts the data on the indicated RBs in all received RBs according to the control information therein.
  • a narrowband terminal is applied to a conventional wireless communication system, and after the narrowband terminal accesses the network, the data is received at an intermediate frequency resource location of the transmission bandwidth configuration of the base station.
  • the data in the transmission bandwidth configuration range (such as 6 RBs) of the narrowband terminal can only be received.
  • the control information sent by the base station indicates that the frequency resource location of the extracted data to the terminal is not the current transmission bandwidth of the terminal.
  • the narrowband terminal can only obtain the data within the current transmission bandwidth configuration range, and cannot receive the data of the frequency resource location indicated by the control information.
  • the data transmission cannot be performed. Therefore, based on the prior art, in the wireless communication system, the narrowband terminal can only work at the intermediate frequency resource location of the transmission bandwidth configuration of the base station, and thus a large amount of system resources will be wasted. Summary of the invention
  • a method for data transmission is provided, where the method includes:
  • the base station allocates a first frequency resource to the terminal, where the bandwidth of the first frequency resource is less than or equal to the transmission bandwidth configuration of the terminal, and the transmission bandwidth configuration of the terminal is smaller than the transmission bandwidth configuration of the base station;
  • the base station sends the information about the first frequency resource to the terminal, so that the terminal determines, according to the information about the first frequency resource,
  • the first frequency resource including:
  • the base station sends the reference frequency information of the first frequency resource to the terminal, so that the terminal determines the reference frequency of the first frequency resource according to the reference frequency information of the first frequency resource, and according to the Determining the first frequency resource, the reference frequency of the first frequency resource, the bandwidth of the first frequency resource, and the relative position of the reference frequency of the first frequency resource in the first frequency resource.
  • the sending, by the base station, information about the first frequency resource to the terminal includes:
  • the base station sends the reference frequency information of the first frequency resource and the bandwidth of the first frequency resource to the terminal.
  • the reference frequency of the first frequency resource includes: a starting frequency, Or intermediate frequency, or end frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or the reference frequency
  • the ARFCN is a number within a frequency band group to which the ARFCN of the reference frequency belongs, wherein the ARFCN-owned frequency band group is an ARFCN set having the same frequency band obtained according to a frequency band to which the ARFCN belongs.
  • the base station sends the information about the first frequency resource to the terminal, specifically:
  • the base station sends the information of the first frequency resource to the terminal by using a physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the base station allocates the first frequency resource to the terminal, including: The base station allocates at least one frequency resource according to a transmission bandwidth configuration of the base station, where a bandwidth of the at least one frequency resource is less than or equal to a transmission bandwidth configuration of the terminal;
  • the base station determines, from the at least one frequency resource, that the first frequency resource is allocated to the terminal.
  • the base station sends the information about the first frequency resource to the terminal, to And the determining, by the terminal, the first frequency resource according to the information about the first frequency resource, and receiving the data sent by the base station according to the first frequency resource, including:
  • the base station sends information about the first frequency resource to the terminal, to And determining, by the terminal, the first frequency resource according to the information about the first frequency resource, and receiving, by the first frequency resource, a reference signal that is sent by the base station on the at least one frequency resource, including: Transmitting, by the base station, the information about the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to the information about the first frequency resource, and receives the base station according to the first frequency resource.
  • a reference signal transmitted using the same reference signal sequence on the at least one frequency resource.
  • the base station sends the information of the first frequency resource and the reference signal information corresponding to the at least one frequency resource to the terminal.
  • the method further includes:
  • the base station determines that the resource element RE used by the enhanced resource element group EREG does not include the RE used by the cell-specific reference signal CRS.
  • the base station After being sent to the terminal, the method further includes:
  • the base station transmits data on at least one subcarrier, and the subcarrier includes subcarriers corresponding to the reference frequency.
  • a method for data transmission comprising:
  • the terminal determines the first frequency resource according to the information about the first frequency resource; the terminal receives data sent by the base station according to the first frequency resource.
  • the information about the first frequency resource includes: reference frequency information of the first frequency resource;
  • Determining, by the terminal, the first frequency resource according to the information about the first frequency resource includes: determining, by the terminal, a reference frequency of the first frequency resource according to reference frequency information of the first frequency resource, and Determining the first frequency resource, the reference frequency of the first frequency resource, the bandwidth of the first frequency resource, and the relative position of the reference frequency of the first frequency resource in the first frequency resource.
  • the information about the first frequency resource includes: reference frequency information of the first frequency resource and a bandwidth of the first frequency resource;
  • Determining, by the terminal, the first frequency resource according to the information about the first frequency resource includes: determining, by the terminal, a reference frequency of the first frequency resource according to reference frequency information of the first frequency resource, and Determining the reference frequency of the first frequency resource, the bandwidth of the first frequency resource, and the relative position of the reference frequency of the first frequency resource in the first frequency resource, determining the The first frequency resource.
  • the reference frequency of the first frequency resource includes: a starting frequency, Or intermediate frequency, or end frequency.
  • the reference frequency information includes: ARFCN of the reference frequency;
  • the ARFCN of the reference frequency is a number in a frequency band group to which the ARFCN of the reference frequency belongs, wherein the ARFCN-owned frequency band group is an ARFCN set having the same frequency band obtained according to a frequency band to which the ARFCN belongs.
  • the terminal receives the first frequency resource that is sent by the base station Information, specifically:
  • the terminal receives the information of the first frequency resource sent by the base station by using the broadcast channel; or the terminal receives the information of the first frequency resource sent by the base station by using the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the terminal is received according to the first frequency resource
  • the data sent by the base station includes:
  • the terminal receives the reference signal sent by the base station according to the first frequency resource.
  • the receiving, by the terminal, the information about the first frequency resource that is sent by the base station includes:
  • the terminal receives the information of the first frequency resource and the reference signal information corresponding to the at least one frequency resource, where the at least one frequency resource is divided by the base station according to the transmission bandwidth configuration of the base station, the at least one frequency The bandwidth of the resource is less than or equal to the terminal transmission bandwidth configuration.
  • the method further includes: The terminal performs channel estimation, time domain or frequency domain synchronization or channel quality measurement according to the received reference signal and the reference signal information.
  • a base station in a third aspect, includes:
  • An allocation module configured to allocate a first frequency resource to the terminal, where a bandwidth of the first frequency resource is less than or equal to a transmission bandwidth configuration of the terminal, and a transmission bandwidth configuration of the terminal is smaller than a transmission bandwidth configuration of the base station;
  • a sending module configured to send information about the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to information about the first frequency resource, and according to the first frequency resource Receiving data transmitted by the base station.
  • the sending module is configured to: send reference frequency information of the first frequency resource to the terminal, so that the terminal is configured according to the Determining, by a reference frequency information of a frequency resource, a reference frequency of the first frequency resource, and according to a reference frequency of the first frequency resource, a bandwidth of the first frequency resource and a reference frequency of the first frequency resource are in a Determining the relative position in the first frequency resource, and determining the first frequency resource.
  • the sending module is configured to: send reference frequency information of the first frequency resource and a bandwidth of the first frequency resource to the terminal.
  • the reference frequency of the first frequency resource includes: a starting frequency, Or intermediate frequency, or end frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or the reference frequency
  • the ARFCN is a number within a frequency band group to which the ARFCN of the reference frequency belongs, wherein the ARFCN-owned frequency band group is an ARFCN set having the same frequency band obtained according to a frequency band to which the ARFCN belongs.
  • the sending module is configured to:
  • the sending module is configured to:
  • the sending module is configured to:
  • the sending module is configured to:
  • the sending module is further configured to:
  • the resource element used by the EREG does not include the RE used by the cell-specific reference signal CRS.
  • the sending module is further configured to:
  • a fourth aspect provides a terminal, where the terminal includes: An information receiving module, configured to receive information about a first frequency resource sent by a base station;
  • the information about the first frequency resource includes: reference frequency information of the first frequency resource;
  • the determining module is configured to:
  • the information about the first frequency resource includes: reference frequency information of the first frequency resource and a bandwidth of the first frequency resource;
  • the determining module is configured to:
  • the reference frequency of the first frequency resource includes: a starting frequency, Or intermediate frequency, or end frequency.
  • the reference frequency information includes: ARFCN of the reference frequency;
  • the ARFCN of the reference frequency is a number in a frequency band group to which the ARFCN of the reference frequency belongs, wherein the ARFCN-owned frequency band group is an ARFCN set having the same frequency band obtained according to a frequency band to which the ARFCN belongs.
  • the information receiving module is configured to:
  • the data receiving module is configured to:
  • the information receiving module is configured to:
  • the base station Receiving, by the base station, the information of the first frequency resource and the reference signal information corresponding to the at least one frequency resource, where the at least one frequency resource is allocated by the base station according to the transmission bandwidth configuration of the base station, and the bandwidth of the at least one frequency resource Less than or equal to the terminal transmission bandwidth configuration.
  • the data receiving module is further configured to:
  • Channel estimation, time domain or frequency domain synchronization or channel quality measurement is performed based on the received reference signal and the reference signal information.
  • a system for data transmission comprising a base station and a terminal as described above.
  • the base station allocates a frequency resource to the terminal in its transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the data sent by the base station according to the frequency resource.
  • the data transmission of the base station and the terminal can be performed on a frequency resource not limited to the intermediate frequency resource location of its transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • FIG. 1 is a flowchart of a method for data transmission according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method for data transmission according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a method for data transmission according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention
  • FIG. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention. detailed description
  • the embodiment of the present invention provides a data transmission method.
  • the processing procedure of the method on the base station side may include the following steps:
  • Step 101 The base station allocates a first frequency resource to the terminal.
  • the bandwidth of the first frequency resource is less than or equal to the transmission bandwidth configuration of the terminal, and the transmission bandwidth configuration of the terminal is smaller than the transmission bandwidth configuration of the base station.
  • the transmission bandwidth configuration of the terminal or the transmission bandwidth configuration of the base station is usually represented by N RBs. It can be understood that the 1 RB can be a frequency bandwidth of 180 kHz. For details, refer to the prior art, and details are not described herein.
  • the first frequency resource may be a frequency.
  • the first frequency resource is represented by lOMHz ⁇ 15MHz, and the bandwidth of the first frequency resource is 5 ⁇ . It should be noted that the above is merely an example, and the present invention is not limited thereto.
  • Step 102 The base station sends the information of the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to the information of the frequency resource, and receives the data sent by the base station according to the first frequency resource.
  • the processing procedure of the method in the terminal measurement may include the following steps:
  • Step 201 The terminal receives information about the first frequency resource sent by the base station.
  • Step 202 The terminal determines the first frequency resource according to the information of the first frequency resource.
  • Step 203 The terminal receives data sent by the base station according to the first frequency resource.
  • the base station allocates a frequency resource to the terminal in its transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the data sent by the base station according to the frequency resource.
  • the data transmission of the base station and the terminal can be performed on a frequency resource not limited to the intermediate frequency resource location of its transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • the embodiment of the present invention provides a method for data transmission.
  • the execution body of the process flow shown in FIG. 1 may preferably be a base station, and the execution body of the process flow shown in FIG. 2 may be a terminal.
  • the terminal in the method may preferably be a narrowband terminal. The following will take a narrowband terminal as an example, combined with the transmission of reference signals.
  • the data transmission method provided by the embodiment of the present invention is described in detail.
  • Reference Signal (also known as pilot signal) is generally used for channel estimation to obtain demodulation parameters, or for time domain frequency domain synchronization, and for channel quality measurement.
  • the application process of the RS may be: the base station and the terminal pre-agreed the RS sequence in different frequency resources (several RBs) (generated by a pseudo-random sequence, each element in the sequence is a complex number), and the base station sends the RS sequence to the terminal, the terminal The received RS sequence is compared with the pre-agreed RS sequence on each frequency resource, and corresponding parameters are obtained through calculation.
  • the processing flow of the data transmission method provided by the embodiment of the present invention may include the following steps:
  • Step 301 The base station allocates a first frequency resource to the narrowband terminal.
  • the bandwidth of the first frequency resource is less than or equal to the transmission bandwidth configuration of the narrowband terminal, and the transmission bandwidth configuration of the narrowband terminal is smaller than the transmission bandwidth configuration of the base station.
  • the first frequency resource allocated for the narrowband terminal may be referred to as a narrowband frequency resource (this name is used in some specific illustrations of this embodiment).
  • the base station may select a part of the frequency resource in the transmission bandwidth configuration of the base station as the first frequency resource allocated to the narrowband terminal according to the allocation of resources. Multiple narrowband terminals can be scheduled on the first frequency resource. Moreover, the bandwidth of the first frequency resource does not exceed the transmission bandwidth configuration of the narrowband terminal, so that the narrowband terminal can receive the data sent on the entire first frequency resource, and the bandwidth of the first frequency resource can be equal to the transmission bandwidth configuration of the narrowband terminal. Such as 6 RB, which is 1080KHz.
  • the base station may divide at least one frequency resource according to its transmission bandwidth configuration, and the bandwidth of the at least one frequency resource is less than or equal to the transmission bandwidth configuration of the narrowband terminal.
  • the base station may determine, in the at least one frequency resource, that the first frequency resource is allocated to the narrowband terminal.
  • the bandwidth value (such as the number of RBs) configured by the transmission bandwidth of the base station
  • the transmission bandwidth configuration multiple frequency resources having the same bandwidth value as the transmission bandwidth configuration of the narrowband terminal are divided, and the number of divided frequency resources is increased.
  • the utilization of bandwidth resources is higher.
  • the transmission bandwidth of the base station is configured to be 66 RBs
  • the transmission bandwidth of the narrowband terminal is configured to be 6 RBs.
  • the transmission bandwidth configuration of the base station can be divided into 11 frequency resources, and multiple narrowband terminals can be scheduled on each frequency resource.
  • the base station may select one of the multiple frequency resources as the first frequency resource, and schedule the narrowband terminal within the selected first frequency resource range.
  • Step 302 The base station sends information about the first frequency resource to the narrowband terminal.
  • the information of the first frequency resource is used to determine the location of the frequency resource in the frequency domain, and may be: a starting frequency location of the frequency resource and a bandwidth of the frequency resource; or, an ending frequency location of the frequency resource and a bandwidth of the frequency resource; Or, the starting frequency position of the frequency resource and the ending frequency position of the frequency resource; or, the intermediate frequency position of the frequency resource and the bandwidth of the frequency resource.
  • the starting frequency position of the frequency resource may be a starting frequency point of the frequency resource, or a color-to-radio frequency channel number (ARFCN) information corresponding to the starting frequency point, or a starting RB number.
  • the ending frequency position may be the ending frequency of the narrowband frequency resource, or the ARFCN information corresponding to the ending frequency point, or the ending RB number.
  • the intermediate frequency position may be an intermediate frequency point of the narrowband frequency resource, or an ARFCN information corresponding to the intermediate frequency point.
  • the intermediate frequency position may be the number of the intermediate RB; and for the case where the narrowband frequency resource is an even number of RBs, the intermediate frequency position may be an odd numbered RB among the two intermediate RBs.
  • the number, or intermediate frequency position may be the number of the RB numbered evenly among the two intermediate RBs.
  • the ARFCN information can be either ARFCN or other information that can correspond to the ARFCN value.
  • one way is to number all the RBs corresponding to the maximum RB number (110) of the system, and the other way is to configure the RB included in the transmission bandwidth configuration of the base station. Numbered.
  • the base station and the narrowband terminal may pre-agreed the bandwidth of the allocated frequency resource, that is, the base station and the narrowband terminal separately store the bandwidth of the allocated frequency resource, and the information of the frequency resource may be: the starting frequency position of the frequency resource; The end frequency position of the frequency resource; or, the intermediate frequency position of the frequency resource.
  • the information of the first frequency resource may be reference frequency information of the first frequency resource, where the reference frequency information may be a frequency point value of the reference frequency or ARFCN information corresponding to the reference frequency, etc., wherein the reference frequency may be determined as The frequency at which a frequency resource is located in the frequency domain, and the reference frequency is within the range of the corresponding first frequency resource.
  • the processing of the step may be: the base station sends the reference frequency information of the first frequency resource to the narrowband terminal; or the base station sends the reference frequency information of the first frequency resource and the bandwidth of the first frequency resource to the narrowband terminal.
  • the narrowband terminal determines the reference frequency of the first frequency resource according to the reference frequency information of the first frequency resource, and according to the reference frequency of the first frequency resource, the bandwidth of the first frequency resource (which may be pre-stored or may be sent by the base station And determining a first frequency resource by a relative position of the reference frequency of the first frequency resource in the first frequency resource.
  • the bandwidth of the first frequency resource 2MHz, the reference frequency is 15MHz
  • the relative position of the reference frequency of the first frequency resource in the first frequency resource is the reference frequency in the middle of the first frequency resource
  • the first frequency resource can be determined to be 14 ⁇ 16MHz.
  • the base station and the narrowband terminal can pre-agreed the relative position information of the reference frequency in the first frequency resource, that is, the narrowband terminal and the base station respectively store the relative position information of the reference frequency in the first frequency resource.
  • the base station and the narrowband terminal may also pre-agreed the bandwidth of the first frequency resource.
  • the relative position information may be an RB in which the reference frequency is located in each RB of the first frequency resource and a subcarrier in which the reference frequency is located in the RB.
  • the second frequency of the 6 RBs of the narrowband frequency resource may be agreed. On the second subcarrier of the RB (from the low frequency).
  • the reference frequency of the first frequency resource may be a starting frequency, an intermediate frequency or an ending frequency.
  • the subcarrier corresponding to the reference frequency information may be used for data transmission (including transmission of data information or control information).
  • the reference frequency information may be ARFCN of the reference frequency.
  • the ARFCNs may be grouped in advance according to the order of the corresponding frequencies.
  • Each group includes a preset number of ARFCNs, and group identifiers are assigned to each group, and are assigned to the ARFCNs in the group in the order of corresponding frequencies.
  • the terminal and the base station store the group identifier and the intra-group number corresponding to each ARFCN.
  • the above ARFCN information may include a group identification and an intra-group number of the corresponding ARFCN. In this way, by sending the ARFCN group identifier and the intra-group number, instead of directly transmitting the ARFCN, the overhead of the ARFCN transmission can be reduced.
  • the terminal can determine the corresponding frequency point according to the group identifier and the intra-group number.
  • the reference frequency information may also be a number of the ARFCN of the reference frequency within the frequency band group to which the ARFCN of the reference frequency belongs, wherein the ARFCN-owned frequency band packet is an ARFCN set having the same frequency band obtained according to the frequency band to which the ARFCN belongs.
  • each ARFCN may be divided into multiple groups according to the frequency band to which it belongs, and the corresponding ARFCNs in the same frequency band may be grouped into one group, and multiple ARFCNs belonging to the same frequency band (ie, belonging to the same group) are respectively allocated with frequency bands.
  • the number in the packet, the group identifier of the ARFCN can use the information of the frequency band to which it belongs.
  • the base station and the terminal may pre-arrange the correspondence between the ARFCN and the number in the frequency band and the frequency band group, so that the terminal can use the number of the ARFCN in the frequency band of the ARFCN to which the reference frequency belongs and the frequency band to which the terminal belongs according to the received reference frequency. , determine the corresponding reference frequency.
  • the group identifier here may correspond to frequency band information, and the frequency band information may be all within the frequency band.
  • the start carrier frequency value corresponding to the ARFCN that is, the start carrier frequency value of the frequency band
  • the number in the frequency band packet corresponds to the value of the ARFCN or the frequency offset value corresponding to the start carrier frequency value.
  • the number of bits used in the numbering within the band grouping may be the number of bits required for the group having the most ARFCN among all groups (or bands).
  • the overhead of the ARFCN transmission can be reduced.
  • 256 ARFCNs are defined in the system. In this way, 8 bits are required to transmit ARFCN. If 256 ARFCNs are divided into 8 groups of 32, each group has 32 numbers, and the corresponding transmission group. The internal numbering needs to be 5 bits, which saves the specificity.
  • the base station can transmit the information of the first frequency resource to the narrowband terminal through the Physical Downlink Control Channal (PDCCH); or, the enhanced physical downlink control channel (Enhanced Physical Downlink)
  • the information of the first frequency resource is sent to the narrowband terminal, and the PDCCH and the EPDCCH may be sent by using a Downlink Control Information (DSI) message; or the first frequency resource may be sent through the broadcast channel.
  • the information is sent to the narrowband terminal, and may be sent through a Master Information Block (MIB) message on the broadcast channel.
  • MIB Master Information Block
  • the first frequency resource may be transmitted through a Physical Downlink Shared Channel (PDSCH).
  • Information sent to narrow With the terminal the information of the first frequency resource may be sent to the narrowband terminal by using a Radio Resource Control (RRC) message or a Media Access Control Control Element (MAC CE) message on the PDSCH.
  • RRC Radio Resource Control
  • MAC CE Media Access Control Element
  • Step 303 The narrowband terminal receives information about the first frequency resource sent by the base station. Specifically, the narrowband terminal may receive information of the first frequency resource sent by the base station by using a PDCCH, an EPDCCH, a PDSCH, or a broadcast channel.
  • Step 304 The narrowband terminal determines the first frequency resource according to the information of the first frequency resource.
  • the narrowband terminal may set the frequency resource corresponding to the transmission bandwidth configuration to the first frequency resource according to the information of the first frequency resource.
  • the carrier frequency of the channel bandwidth corresponding to the transmission bandwidth configuration may be set to the carrier frequency of the channel bandwidth corresponding to the first frequency resource.
  • the transmission bandwidth configuration of a narrowband terminal is a frequency range in which a narrowband terminal baseband is currently capable of efficient data transmission.
  • the terminal may determine the reference frequency of the first frequency resource according to the reference frequency information of the first frequency resource, and according to the reference frequency of the first frequency resource, the bandwidth of the first frequency resource (the bandwidth of the first frequency resource may be included in the first frequency resource)
  • the information may be pre-stored in the terminal and the relative position of the reference frequency of the first frequency resource in the first frequency resource to determine the first frequency resource.
  • the bandwidth of the first frequency resource is 2 MHz
  • the reference frequency is 15 MHz
  • the relative position of the reference frequency of the first frequency resource in the first frequency resource is the reference frequency in the middle of the first frequency resource, then the first can be determined.
  • the frequency resource is 14 ⁇ 16MHz.
  • the terminal may obtain a frequency range of the current system carrier, according to a frequency range of the system carrier.
  • the information of the first frequency resource includes an RB number, and the corresponding frequency point (start frequency point, end frequency point or intermediate frequency point) of the first frequency resource is determined.
  • the frequency resource or the channel bandwidth carrier configured according to the frequency bandwidth of the narrowband terminal may be configured according to the frequency point.
  • the frequency is set, and the bandwidth of the first frequency resource included in the information using the first frequency resource or the bandwidth of the pre-agreed first frequency resource may be set by using.
  • the corresponding frequency point may be determined according to the ARFCN information, and then, according to the frequency point.
  • the frequency resource of the transmission bandwidth configuration of the narrowband terminal or the carrier frequency of the channel bandwidth is set, and may be set by using the bandwidth of the first frequency resource included in the information of the first frequency resource or the bandwidth of the pre-agreed first frequency resource.
  • Step 305 The base station performs data transmission.
  • the data sent by the base station may include control information and data information.
  • the base station allocates time-frequency resources to the narrowband terminal in the first frequency resource, and then allocates data sent to the terminal to the corresponding resource resource, before performing data transmission of the entire transmission bandwidth configuration.
  • Time-frequency position The base station may indicate, by the indication information on the control channel in the first frequency resource, the narrowband terminal, and the data sent to the narrowband terminal is at a specific time-frequency location in the first frequency resource.
  • the process of performing data transmission by the base station may be: the base station transmits data on at least one subcarrier, where the at least one subcarrier includes a reference frequency corresponding to Subcarrier.
  • Step 306 The narrowband terminal receives data sent by the base station according to the first frequency resource.
  • the narrowband terminal may determine the first frequency resource according to the information of the first frequency resource, and receive the data sent by the base station according to the first frequency resource.
  • the narrowband terminal may receive data on the entire first frequency resource allocated thereto, read the indication information sent by the base station, obtain the time-frequency location indicated therein, and select the corresponding time-frequency location in the received data. The data on it.
  • the base station may send the reference signal, and the narrowband terminal may determine the first frequency resource according to the information of the first frequency resource, and receive the reference signal sent by the base station according to the first frequency resource. That is, the reference signal transmitted by the base station is received on the first frequency resource, and then processing such as channel estimation, time domain or frequency domain synchronization, or channel quality measurement may be performed.
  • the base station can transmit the reference signal on at least one frequency resource.
  • the narrowband terminal may determine the first frequency resource according to the information of the first frequency resource, and receive the reference signal sent by the base station on the at least one frequency resource according to the first frequency resource.
  • the reference signal may be a conventional defined reference signal, for example, a cell specific reference signal (CRS), a channel state information-reference signal (CSI-RS), and a reduced reference. Signal (Redunded CRS, RCRS) or Demodulation Reference Signal (DMRS). Among them, CRS, CSI-RS,
  • the RCRS is a reference signal transmitted by the base station in full transmission bandwidth configuration.
  • the base station performs transmission of the full transmission bandwidth configuration on the reference signal, and the narrowband terminal can receive the reference signal on the narrowband frequency resource.
  • the reference signal may also be a newly defined reference signal, and the newly defined reference signal may be a reference signal at a different time-frequency position than the conventionally defined reference signal.
  • the base station may transmit a reference signal on the at least one frequency resource.
  • the at least one frequency resource includes the first frequency resource allocated for the narrowband terminal.
  • the reference signal transmitted only on part of the frequency resources in the transmission bandwidth configuration of the base station may be referred to as a narrowband reference signal, relative to a conventional wideband reference signal (a reference signal transmitted by the base station full transmission bandwidth configuration).
  • each of the above-mentioned divided at least one frequency resource may be allocated as a first frequency resource to a different narrowband terminal.
  • the narrowband reference signal is not transmitted, and the utilization of system resources can be improved.
  • the corresponding traditional reference can be used for the time-frequency position in the subframe.
  • the time-frequency position of the signal for example, the narrow-band CRS can use the time-frequency position of the conventional CRS in the subframe.
  • the time-frequency position of the newly defined reference signal can also be used. If the narrowband reference signal and the corresponding legacy reference signal (wideband reference signal) are to be transmitted simultaneously, they can be transmitted at the same time-frequency position by means of code division multiplexing.
  • a sequence of narrow-band reference signals used in each frequency band which can multiplex a sequence of a conventional reference signal in a corresponding frequency band, for example, a sequence of narrow-band CRS transmitted at a certain time-frequency position, which can be used A sequence of traditional CRS sent at the location.
  • a base station and a terminal generally have a CRS sequence corresponding to 110 RBs.
  • a CRS sequence of a plurality of RBs among 110 RBs may be transmitted, for example, a transmission bandwidth of the base station.
  • the configuration is 50 RBs, and the CRS sequence corresponding to 50 RBs among 110 RBs is taken as the CRS sequence transmitted on the transmission bandwidth configuration of the base station.
  • the base station may send the reference signal by using the same reference signal sequence on the at least one frequency resource, and correspondingly, the terminal may determine the first frequency resource according to the information of the first frequency resource, and receive the base station according to the first frequency resource.
  • the same reference signal sequence can be used on each frequency resource.
  • a CRS sequence of a plurality of RBs among 110 RBs may be transmitted according to the bandwidth of each frequency resource, for example, a base station
  • the transmission bandwidth is configured as 50 RBs, and the bandwidth of each frequency resource is 6 RBs.
  • the CRS sequences corresponding to 6 RBs among 110 RBs can be taken, respectively.
  • the frequency resource is transmitted, or the CRS sequence may be determined according to the corresponding frequency resource position of each frequency resource located in 50 RBs or 110 RBs.
  • the resource element (Resource Element, RE) used by the enhanced resource element group (EREG) may also be set, and the following settings may be adopted according to specific requirements:
  • the base station determines that the RE used by the EREG (the EPDCCH is mapped to several EREGs for transmission) does not include the RE used by the CRS. Both CRS and DMRS can be used as channel estimation. Based on the above EREG settings, the base station may not transmit the DMRS, and the terminal may perform channel estimation based on the CRS to complete channel demodulation. In this way, the resources used to send DMRS can be saved, and the resources can be improved. Utilization rate.
  • the base station determines that the RE used by the EREG does not include the RE used by the CRS and the RE used by the DMRS.
  • CRS and DMRS can be simultaneously transmitted, channel estimation based on CRS and DMRS, and channel estimation accuracy can be improved in the case of poor channel quality.
  • the reference signal type used for demodulation by the terminal may be configured: using CRS for channel demodulation, or using DMRS for channel demodulation, or simultaneously using CRS and DMRS for channel demodulation.
  • the transmission subframe of the reference signal may be configured or pre-defined by signaling, the transmission subframe of the narrowband RS may include a subframe for transmitting the RCRS, or the transmission subframe of the narrowband RS may include a subframe for transmitting the MIB or the SIB. .
  • the narrowband terminal reference signal information (reference signal type, RS index, etc.) may be notified by the base station to send a message to the terminal, so that the narrowband terminal stores the reference signal information, and then the narrowband terminal may according to the reference signal information and the received
  • the reference signal is processed later, and the specific process can be: 3 ⁇ 4 under:
  • the base station transmits the information of the first frequency resource and the reference signal information corresponding to the divided at least one frequency resource to the narrowband terminal.
  • the narrowband terminal receives the information of the first frequency resource sent by the base station and the reference signal information corresponding to the at least one frequency resource.
  • the base station may notify the reference signal information corresponding to the at least one frequency resource of the narrowband terminal by using a synchronization channel or a broadcast channel, and the corresponding terminal may acquire the reference signal information on the synchronization channel or the broadcast channel.
  • the sending operation may be performed when the narrowband terminal accesses the base station, or may be performed by the switched target base station when the base station handover is performed in a Coordinated Multipoint Transmission (CoMP) scenario.
  • CoMP Coordinated Multipoint Transmission
  • the base station may send the reference signal information by sending an indication message to the narrowband terminal.
  • the RS information carried in the indication message may include an RS index, and the narrowband terminal stores a preset RS corresponding to different RS indexes, and the corresponding preset RS may be determined by using the RS index.
  • the RS information may also include some types of information such as an RS type (which may be a type or a combination of multiple types), an identifier of a narrowband frequency resource, a carrier identifier, an RS antenna port number, an RS scrambling identifier, and an RS frequency domain offset.
  • the indication message may be an RRC message or a DCI message or the like.
  • the base station then transmits a reference signal.
  • the narrowband terminal performs channel estimation, time domain frequency domain synchronization or channel quality measurement according to the received reference signal and the reference signal information.
  • the base station allocates a frequency resource to the terminal in the transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the number sent by the base station according to the frequency resource. According to. In this way, the data transmission of the base station and the terminal can be performed on the frequency resource not limited to the intermediate frequency resource location of the transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • an embodiment of the present invention further provides a base station.
  • the base station includes:
  • the allocation module 410 is configured to allocate a first frequency resource to the terminal, where a bandwidth of the first frequency resource is less than or equal to a transmission bandwidth configuration of the terminal, and a transmission bandwidth configuration of the terminal is smaller than a transmission bandwidth configuration of the base station;
  • the sending module 420 is configured to send information about the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to information about the first frequency resource, and according to the first frequency
  • the resource receives data transmitted by the base station.
  • the sending module 420 is configured to:
  • the terminal Transmitting the reference frequency information of the first frequency resource to the terminal, so that the terminal determines a reference frequency of the first frequency resource according to the reference frequency information of the first frequency resource, and according to the first a reference frequency of the frequency resource, a bandwidth of the first frequency resource, and a relative position of the reference frequency of the first frequency resource in the first frequency resource, determining the first frequency resource.
  • the sending module 420 is configured to:
  • the reference frequency of the first frequency resource includes: a starting frequency, or an intermediate frequency, or an ending frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or a number of the ARFCN of the reference frequency in a frequency band group of the ARFCN to which the reference frequency belongs, where the ARFCN belongs to a frequency band group according to ARFCN set with the same frequency band obtained by band division of ARFCN.
  • the sending module 420 is configured to:
  • the allocating module 410 is configured to:
  • the sending module 420 is configured to:
  • the sending module 420 is configured to:
  • the sending module 420 is configured to:
  • the sending module 420 is further configured to:
  • the resource element used by the EREG does not include the RE used by the cell-specific reference signal CRS.
  • the sending module 420 is further configured to:
  • the embodiment of the present invention further provides a terminal.
  • the terminal includes:
  • the information receiving module 510 is configured to receive information about the first frequency resource sent by the base station;
  • the determining module 520 is configured to determine the first frequency resource according to the information about the first frequency resource
  • the data receiving module 530 is configured to receive data sent by the base station according to the first frequency resource.
  • the information about the first frequency resource includes: a reference frequency signal of the first frequency resource Interest rate
  • the determining module 520 is configured to:
  • the information about the first frequency resource includes: a reference frequency information of the first frequency resource and a bandwidth of the first frequency resource;
  • the determining module 520 is configured to:
  • the reference frequency of the first frequency resource includes: a starting frequency, or an intermediate frequency, or an ending frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or a number of the ARFCN of the reference frequency in a frequency band group of the ARFCN to which the reference frequency belongs, where the ARFCN belongs to a frequency band group according to ARFCN set with the same frequency band obtained by band division of ARFCN.
  • the information receiving module 510 is configured to:
  • the information of the first frequency resource sent by the base station is received by the physical downlink shared channel PDSCH.
  • the data receiving module 530 is configured to:
  • the information receiving module 510 is configured to:
  • the data receiving module 530 is further configured to:
  • Channel estimation, time domain or frequency domain synchronization or channel quality measurement is performed based on the received reference signal and the reference signal information.
  • the base station allocates a frequency resource to the terminal in its transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the data sent by the base station according to the frequency resource.
  • the data transmission of the base station and the terminal can be performed on a frequency resource not limited to the intermediate frequency resource location of its transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • the embodiment of the present invention further provides a system for data transmission, where the system includes the base station and the terminal as described in the foregoing embodiments.
  • the base station allocates a frequency resource to the terminal in its transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the data sent by the base station according to the frequency resource.
  • the data transmission of the base station and the terminal can be performed on a frequency resource not limited to the intermediate frequency resource location of its transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • the embodiment of the invention provides a base station.
  • the base station can include a transmitter, a receiver, a memory, and a processor coupled to the transmitter, receiver, and memory, respectively.
  • the base station may further include a common component such as an antenna, a baseband processing component, a medium RF processing component, an input/output device, and the like, and the embodiment of the present invention is not limited herein.
  • the storage unit stores a set of program codes
  • the processor is configured to call the program code stored in the memory, and is used to execute any one of the foregoing method embodiments, for example, the following operations are performed: the base station allocates the first frequency resource to the terminal, The bandwidth of the first frequency resource is less than or equal to the transmission bandwidth configuration of the terminal, and the transmission bandwidth configuration of the terminal is smaller than the transmission bandwidth configuration of the base station;
  • the base station sends information about the first frequency resource to the terminal, so that the Determining, by the terminal, the first frequency resource according to the information about the first frequency resource, the method includes: the base station transmitting, by the base station, reference frequency information of the first frequency resource to the terminal, so that the terminal is according to the first The reference frequency information of the frequency resource determines a reference frequency of the first frequency resource, and according to the reference frequency of the first frequency resource, the bandwidth of the first frequency resource and the reference frequency of the first frequency resource are in the The relative position in the first frequency resource determines the first frequency resource.
  • the sending, by the base station, the information about the first frequency resource to the terminal includes: sending, by the base station, reference frequency information of the first frequency resource and a bandwidth of the first frequency resource to the terminal.
  • the reference frequency of the first frequency resource includes: a starting frequency, or an intermediate frequency, or an ending frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or a number of the ARFCN of the reference frequency in a frequency band group of the ARFCN to which the reference frequency belongs, where the ARFCN belongs to a frequency band group according to ARFCN set with the same frequency band obtained by band division of ARFCN.
  • the base station sends the information about the first frequency resource to the terminal, where the base station sends the information about the first frequency resource to the terminal by using a physical downlink control channel PDCCH; or
  • the base station sends the information of the first frequency resource to the terminal by using a physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the base station allocates the first frequency resource to the terminal, including:
  • the base station allocates at least one frequency resource according to a transmission bandwidth configuration of the base station, where a bandwidth of the at least one frequency resource is less than or equal to a transmission bandwidth configuration of the terminal;
  • the base station determines, from the at least one frequency resource, that the first frequency resource is allocated to the terminal.
  • the base station sends the information about the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to the information of the first frequency resource, and according to the first frequency
  • the rate resource receives the data sent by the base station, and includes:
  • the base station sends the information about the first frequency resource to the terminal, so that the terminal determines the first frequency resource according to the information of the first frequency resource, and according to the first frequency
  • Receiving, by the base station, the reference signal sent by the base station on the at least one frequency resource the method includes: sending, by the base station, information about the first frequency resource to the terminal, so that the terminal is configured according to the first frequency resource And determining, according to the first frequency resource, a reference signal that is sent by the base station using the same reference signal sequence on the at least one frequency resource according to the first frequency resource.
  • the sending, by the base station, the information about the first frequency resource to the terminal includes: sending, by the base station, information of the first frequency resource and reference signal information corresponding to the at least one frequency resource to Said terminal.
  • the method further includes:
  • the base station determines that the resource element RE used by the enhanced resource element group EREG does not include the RE used by the cell-specific reference signal CRS.
  • the method further includes:
  • the base station transmits data on at least one subcarrier, and the subcarrier includes subcarriers corresponding to the reference frequency.
  • the embodiment of the invention provides a terminal.
  • the terminal can include a transmitter, a receiver, a memory, and a processor coupled to the transmitter, receiver, and memory, respectively.
  • the terminal may further include a common component such as an antenna, a baseband processing component, a medium RF processing component, an input/output device, and the like, and the embodiment of the present invention does not impose any limitation herein.
  • the program stores a set of program codes
  • the processor is configured to call the program code stored in the memory, and is used to execute any one of the foregoing method embodiments, for example, the following operations are performed: the terminal receives the first frequency resource sent by the base station. Information;
  • the terminal determines the first frequency resource according to the information about the first frequency resource; the terminal receives data sent by the base station according to the first frequency resource.
  • the information about the first frequency resource includes: reference frequency information of the first frequency resource;
  • Determining, by the terminal, the first frequency resource according to the information about the first frequency resource includes: determining, by the terminal, a reference frequency of the first frequency resource according to reference frequency information of the first frequency resource, and Determining the first frequency resource, the reference frequency of the first frequency resource, the bandwidth of the first frequency resource, and the relative position of the reference frequency of the first frequency resource in the first frequency resource.
  • the information about the first frequency resource includes: a reference frequency information of the first frequency resource and a bandwidth of the first frequency resource;
  • Determining, by the terminal, the first frequency resource according to the information about the first frequency resource includes: determining, by the terminal, a reference frequency of the first frequency resource according to reference frequency information of the first frequency resource, and Determining the first frequency resource, the reference frequency of the first frequency resource, the bandwidth of the first frequency resource, and the relative position of the reference frequency of the first frequency resource in the first frequency resource.
  • the reference frequency of the first frequency resource includes: a starting frequency, or an intermediate frequency, or an ending frequency.
  • the reference frequency information includes: ARFCN of the reference frequency; or a number of the ARFCN of the reference frequency in a frequency band group of the ARFCN to which the reference frequency belongs, where the ARFCN belongs to a frequency band group according to ARFCN set with the same frequency band obtained by band division of ARFCN.
  • the terminal receives the information of the first frequency resource sent by the base station, where the terminal receives the information of the first frequency resource sent by the base station by using the physical downlink control channel PDCCH; or
  • the terminal receives the information of the first frequency resource sent by the base station by using the broadcast channel; or the terminal receives the information of the first frequency resource sent by the base station by using the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the receiving, by the terminal, the data sent by the base station according to the first frequency resource includes: receiving, by the terminal, a reference signal sent by the base station according to the first frequency resource.
  • the receiving, by the terminal, information about the first frequency resource sent by the base station includes: The terminal receives the information of the first frequency resource and the reference signal information corresponding to the at least one frequency resource, where the at least one frequency resource is divided by the base station according to the transmission bandwidth configuration of the base station, the at least one frequency The bandwidth of the resource is less than or equal to the terminal transmission bandwidth configuration.
  • the method further includes:
  • the terminal performs channel estimation, time domain or frequency domain synchronization or channel quality measurement according to the received reference signal and the reference signal information.
  • the base station allocates a frequency resource to the terminal in its transmission bandwidth configuration, and sends the information of the frequency resource to the terminal, so that the terminal can receive the data sent by the base station according to the frequency resource.
  • the data transmission of the base station and the terminal can be performed on a frequency resource not limited to the intermediate frequency resource location of its transmission bandwidth configuration, so that the resource utilization of the wireless communication system can be improved.
  • a person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium.
  • the storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

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Abstract

本发明实施例提供了一种数据传输的方法、装置和系统,涉及通信技术领域,所述方法包括:基站为终端分配第一频率资源,所述第一频率资源的带宽小于或者等于所述终端的传输带宽配置,所述终端的传输带宽配置小于所述基站的传输带宽配置;所述基站将所述第一频率资源的信息发送给所述终端,以使所述终端根据所述第一频率资源的信息确定所述第一频率资源,并根据所述第一频率资源接收所述基站发送的数据。采用本发明,可以提高无线通信系统的资源利用率。

Description

说 明 书 一种数据传输的方法、 装置和系统 技术领域
本发明涉及通信技术领域, 特别涉及一种数据传输的方法、 装置和系统。 背景技术
随着通信技术的发展, 窄带终端正逐渐的兴起, 尤其是基于机器通信
( machine type communication, MTC )技术的 MTC终端。 典型的 MTC应用 可以包括环境监测、 智能抄表等。 窄带终端的特点是, 传输的数据包小, 通信 的周期长, 成本要求低, 数量更庞大等, 尤其是窄带终端的传输带宽配置相对 于普通终端要低很多,普通终端的传输带宽配置可达基站在单个载波上的最大 传输带宽配置, 即 100个资源块(Resource Block, RB ), 窄带终端的传输带宽 配置一般为 6个 RB , 远小于 100个 RB。
在传统的无线通信系统(如长期演进 ( Long Term Evolution, LTE ) 系统 ) 中, 基站向普通终端传输数据时, 向终端发送的子帧中包含有下行控制信息, 下行控制信息指示终端在传输带宽配置上的至少一个 RB上进行数据提取。 普 通终端对整个传输带宽配置内的 RB进行接收, 并根据其中的控制信息, 在接 收的全部 RB中提取指示的 RB上的数据。
在实现本发明的过程中, 发明人发现现有技术至少存在以下问题: 将窄带终端应用到传统的无线通信系统中, 窄带终端入网后是在基站的传 输带宽配置的中间频率资源位置接收数据的, 只能接收到窄带终端的传输带宽 配置范围 (如 6个 RB ) 内的数据, 在进行数据传输时, 如果基站发送的控制 信息指示给该终端的提取数据的频率资源位置不在终端当前传输带宽配置范 围内, 这时, 窄带终端在接收到携带该控制信息的子帧后, 只能获取到其当前 传输带宽配置范围内的数据, 而并不能接收到控制信息指示的频率资源位置的 数据, 将导致无法进行数据传输, 所以, 基于现有技术, 在无线通信系统中, 窄带终端只能工作在基站的传输带宽配置的中间频率资源位置, 这样, 将浪费 大量的系统资源。 发明内容
为了解决现有技术中存在的上述问题, 本发明实施例提供了一种数据传输 的方法、装置和系统, 以提高无线通信系统的资源利用率。所述技术方案如下: 第一方面, 提供了一种数据传输的方法, 所述方法包括:
基站为终端分配第一频率资源, 所述第一频率资源的带宽小于或者等于所 述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基站的传输带宽配 置;
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站发送的数据。
在所述第一方面的第一种可能的实现方式中, 所述基站将所述第一频率资 源的信息发送给所述终端, 以使所述终端根据所述第一频率资源的信息确定所 述第一频率资源, 包括:
所述基站将所述第一频率资源的基准频率信息发送给所述终端, 以使得所 述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准 频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述 第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频 率资源。
在所述第一方面的第二种可能的实现方式中, 所述基站将所述第一频率资 源的信息发送给所述终端, 包括:
所述基站将所述第一频率资源的基准频率信息和所述第一频率资源的带 宽发送给所述终端。
结合所述第一方面的第一种或第二种可能的实现方式, 在所述第一方面的 第三种可能的实现方式中, 所述第一频率资源的基准频率包括: 起始频率, 或 者中间频率, 或者结束频率。
结合第一方面的第一种至第三种可能的实现方式之一, 在第四种可能的实 现方式中, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所述 基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号,其中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同频带 的 ARFCN集合。
结合第一方面或第一方面的第一种至第四种可能的实现方式之一,在所述 第一方面的第五种可能的实现方式中, 所述基站将所述第一频率资源的信息发 送给所述终端, 具体为:
所述基站通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送 给所述终端; 或者,
所述基站通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信 息发送给所述终端; 或者,
所述基站通过广播信道将所述第一频率资源的信息发送给所述终端; 或 者,
所述基站通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送 给所述终端。
结合第一方面或第一方面的第一种至第五种可能的实现方式之一,在所述 第一方面的第六种可能的实现方式中, 基站为终端分配第一频率资源, 包括: 所述基站根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少 一个频率资源的带宽小于或者等于所述终端的传输带宽配置;
所述基站从所述至少一个频率资源中确定出第一频率资源分配给所述终 端。
结合所述第一方面的第六种可能的实现方式,在所述第一方面的第七种可 能的实现方式中, 所述基站将所述第一频率资源的信息发送给所述终端, 以使 所述终端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第 一频率资源接收所述基站发送的数据, 包括:
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上发送的参考信号。
结合所述第一方面的第七种可能的实现方式,在所述第一方面的第八种可 能的实现方式中, 所述基站将所述第一频率资源的信息发送给所述终端, 以使 所述终端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第 一频率资源接收所述基站在所述至少一个频率资源上发送的参考信号, 包括: 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上使用相同的参考信号序列发送的参考 信号。 结合所述第一方面的第七种或第八种可能的实现方式, 在所述第一方面的 第九种可能的实现方式中, 所述基站将所述第一频率资源的信息发送给所述终 端, 包括:
所述基站将所述第一频率资源的信息和所述至少一个频率资源对应的参 考信号信息发送给所述终端。
结合第一方面的第七种至第九种可能的实现方式之一, 在所述第一方面的 第十种可能的实现方式中, 所述方法还包括:
所述基站确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专 用参考信号 CRS使用的 RE。
结合第一方面的第一种至第十种可能的实现方式之一, 在所述第一方面的 第十一种可能的实现方式中, 所述所述基站将所述第一频率资源的信息发送给 所述终端之后, 还包括:
所述基站在至少一个子载波上发送数据, 所述子载波包括所述基准频率对 应的子载波。
第二方面, 提供了一种数据传输的方法, 所述方法包括:
终端接收基站发送的第一频率资源的信息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源; 所述终端根据所述第一频率资源接收所述基站发送的数据。
在所述第二方面的第一种可能的实现方式中, 所述第一频率资源的信息包 括: 所述第一频率资源的基准频率信息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源 的基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽 和所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述 第一频率资源。
在所述第二方面的第二种可能的实现方式中, 所述第一频率资源的信息包 括: 所述第一频率资源的基准频率信息和所述第一频率资源的带宽;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源 的基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽 和所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述 第一频率资源。
结合所述第二方面的第一种或第二种可能的实现方式, 在所述第二方面的 第三种可能的实现方式中, 所述第一频率资源的基准频率包括: 起始频率, 或 者中间频率, 或者结束频率。
结合第二方面的第一种至第三种可能的实现方式之一, 在所述第二方面的 第四种可能的实现方式中,所述基准频率信息,包括:所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的 编号, 其中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的 具有相同频带的 ARFCN集合。
结合第二方面或第二方面的第一种至第四种可能的实现方式之一,在所述 第二方面的第五种可能的实现方式中, 所述终端接收基站发送的第一频率资源 的信息, 具体为:
所述终端通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的 信息; 或者,
所述终端通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率 资源的信息; 或者,
所述终端通过广播信道接收基站发送的第一频率资源的信息; 或者, 所述终端通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的 信息。
结合第二方面或第二方面的第一种至第五种可能的实现方式之一,在所述 第二方面的第六种可能的实现方式中, 所述终端根据所述第一频率资源接收所 述基站发送的数据, 包括:
所述终端根据所述第一频率资源接收所述基站发送的参考信号。
结合所述第二方面的第六种可能的实现方式,在所述第二方面的第七种可 能的实现方式中, 所述终端接收基站发送的第一频率资源的信息, 包括:
所述终端接收基站发送的第一频率资源的信息和至少一个频率资源对应 的参考信号信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽 配置划分的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配 置。
结合所述第二方面的第六种或第七种可能的实现方式, 在所述第二方面的 第八种可能的实现方式中, 所述方法还包括: 所述终端根据接收到的参考信号,以及所述参考信号信息,进行信道估计、 时域或频域同步或信道质量测量。
第三方面, 提供了一种基站, 所述基站包括:
分配模块, 用于为终端分配第一频率资源, 所述第一频率资源的带宽小于 或者等于所述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基站的 传输带宽配置;
发送模块, 用于将所述第一频率资源的信息发送给所述终端, 以使所述终 端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率 资源接收所述基站发送的数据。
在所述第三方面的第一种可能的实现方式中, 所述发送模块, 用于: 将所述第一频率资源的基准频率信息发送给所述终端, 以使得所述终端根 据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频率, 并根 据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第一频率资 源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率资源。
在所述第三方面的第二种可能的实现方式中, 所述发送模块, 用于: 将所述第一频率资源的基准频率信息和所述第一频率资源的带宽发送给 所述终端。
结合所述第三方面的第一种或第二种可能的实现方式, 在所述第三方面的 第三种可能的实现方式中, 所述第一频率资源的基准频率包括: 起始频率, 或 者中间频率, 或者结束频率。
结合第三方面的第一种至第三种可能的实现方式之一, 在第四种可能的实 现方式中, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所述 基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号,其中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同频带 的 ARFCN集合。
结合第三方面或第三方面的第一种至第四种可能的实现方式之一,在所述 第三方面的第五种可能的实现方式中, 所述发送模块, 用于:
通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送给所述终 端; 或者,
通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信息发送给 所述终端; 或者, 通过广播信道将所述第一频率资源的信息发送给所述终端; 或者, 通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送给所述终 端。
结合第三方面或第三方面的第一种至第五种可能的实现方式之一,在所述 第三方面的第六种可能的实现方式中, 所述分配模块, 用于:
根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少一个频率 资源的带宽小于或者等于所述终端的传输带宽配置;
从所述至少一个频率资源中确定出第一频率资源分配给所述终端。
结合所述第三方面的第六种可能的实现方式,在所述第三方面的第七种可 能的实现方式中, 所述发送模块, 用于:
将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上发送的参考信号。
结合所述第三方面的第七种可能的实现方式,在所述第三方面的第八种可 能的实现方式中, 所述发送模块, 用于:
将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上使用相同的参考信号序列发送的参考信号。
结合所述第三方面的第七种或第八种可能的实现方式, 在所述第三方面的 第九种可能的实现方式中, 所述发送模块, 用于:
将所述第一频率资源的信息和所述至少一个频率资源对应的参考信号信 息发送给所述终端。
结合第三方面的第七种至第九种可能的实现方式之一, 在所述第三方面的 第十种可能的实现方式中, 所述发送模块, 还用于:
确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专用参考信 号 CRS使用的 RE。
结合第三方面的第一种至第十种可能的实现方式之一, 在所述第三方面的 第十一种可能的实现方式中, 所述发送模块, 还用于:
在至少一个子载波上发送数据, 所述子载波包括所述基准频率对应的子载 波。
第四方面, 提供了一种终端, 所述终端包括: 信息接收模块, 用于接收基站发送的第一频率资源的信息;
确定模块, 用于根据所述第一频率资源的信息确定所述第一频率资源; 数据接收模块, 用于根据所述第一频率资源接收所述基站发送的数据。 在所述第四方面的第一种可能的实现方式中, 所述第一频率资源的信息包 括: 所述第一频率资源的基准频率信息;
所述确定模块, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置,确定所述第一频率 资源。
在所述第四方面的第二种可能的实现方式中, 所述第一频率资源的信息包 括: 所述第一频率资源的基准频率信息和所述第一频率资源的带宽;
所述确定模块, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置,确定所述第一频率 资源。
结合所述第四方面的第一种或第二种可能的实现方式, 在所述第四方面的 第三种可能的实现方式中, 所述第一频率资源的基准频率包括: 起始频率, 或 者中间频率, 或者结束频率。
结合第四方面的第一种至第三种可能的实现方式之一, 在所述第四方面的 第四种可能的实现方式中,所述基准频率信息,包括:所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的 编号, 其中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的 具有相同频带的 ARFCN集合。
结合第四方面或第四方面的第一种至第四种可能的实现方式之一,在所述 第四方面的第五种可能的实现方式中, 所述信息接收模块, 用于:
通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的信息; 或 者,
通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率资源的信 息; 或者, 通过广播信道接收基站发送的第一频率资源的信息; 或者,
通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的信息。 结合第四方面或第四方面的第一种至第五种可能的实现方式之一,在所述 第四方面的第六种可能的实现方式中, 所述数据接收模块, 用于:
根据所述第一频率资源接收所述基站发送的参考信号。
结合所述第四方面的第六种可能的实现方式,在所述第四方面的第七种可 能的实现方式中, 所述信息接收模块, 用于:
接收基站发送的第一频率资源的信息和至少一个频率资源对应的参考信 号信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽配置划分 的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配置。
结合所述第四方面的第六种或第七种可能的实现方式, 在所述第四方面的 第八种可能的实现方式中, 所述数据接收模块, 还用于:
根据接收到的参考信号, 以及所述参考信号信息, 进行信道估计、 时域或 频域同步或信道质量测量。
第五方面, 提供了一种数据传输的系统, 所述系统包括如上所述的基站和 终端。
本发明实施例提供的技术方案的有益效果是:
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 附图说明
为了更清楚地说明本发明实施例中的技术方案, 下面将对实施例描述中所 需要使用的附图作筒单地介绍, 显而易见地, 下面描述中的附图仅仅是本发明 的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下, 还可以根据这些附图获得其他的附图。
图 1是本发明实施例提供的数据传输的方法流程图;
图 2是本发明实施例提供的数据传输的方法流程图;
图 3是本发明实施例提供的数据传输的方法流程图;
图 4是本发明实施例提供的基站的结构示意图; 图 5是本发明实施例提供的终端的结构示意图。 具体实施方式
为使本发明的目的、 技术方案和优点更加清楚, 下面将结合附图对本发明 实施方式作进一步地详细描述。
实施例一
本发明实施例提供了一种数据传输的方法, 如图 1所示, 该方法在基站侧 的处理流程可以包括如下的步骤:
步骤 101 , 基站为终端分配第一频率资源。 其中, 第一频率资源的带宽小 于或者等于终端的传输带宽配置, 终端的传输带宽配置小于基站的传输带宽配 置。
终端的传输带宽配置或者基站的传输带宽配置通常表现为 N个 RB, 可以 理解的是 1RB可以为 180KHz频率带宽,具体可参见现有技术,在此不再赘述。
第一频率资源可以是一段频率, 例如, 第一频率资源用 lOMHz~15MHz表 示, 第一频率资源的带宽为 5ΜΗζ。 需要说明的是, 上述只是举例说明, 本发 明不限于此。
步骤 102, 基站将第一频率资源的信息发送给终端, 以使终端根据该频率 资源的信息确定出第一频率资源, 并根据第一频率资源接收基站发送的数据。
如图 2所示, 该方法在终端测的处理流程可以包括如下的步骤:
步骤 201 , 终端接收基站发送的第一频率资源的信息。
步骤 202, 终端根据第一频率资源的信息确定第一频率资源。
步骤 203 , 终端根据第一频率资源接收基站发送的数据。
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 实施例二
本发明实施例提供了一种数据传输的方法, 上述图 1所示的处理流程的执 行主体可以优选为基站, 图 2所示的处理流程的执行主体可以为终端。 该方法 中的终端可以优选为窄带终端。 下面将以窄带终端为例, 结合参考信号的传输 过程, 对本发明实施例提供的数据传输方法进行详细的阐述。
参考信号 (Reference Signal, RS ) (也可称导频信号)一般用于进行信道 估计获取解调参数, 或用于时域频域同步, 还用于信道质量测量等。 RS 的应 用过程可以是, 基站和终端预先约定好不同频率资源 (若干个 RB ) 中的 RS 序列 (通过伪随机序列生成, 序列中的每一个元素是复数), 基站向终端发送 RS序列, 终端在各频率资源上将接收到的 RS序列与预先约定的 RS序列进行 比较, 经过计算得到相应的参数。
如图 3所示, 本发明实施例提供的数据传输方法的处理流程可以包括如下 步骤:
步骤 301 , 基站为窄带终端分配第一频率资源。 其中, 该第一频率资源的 带宽小于或者等于该窄带终端的传输带宽配置, 该窄带终端的传输带宽配置小 于基站的传输带宽配置。 为窄带终端分配的第一频率资源可称作一种窄带频率 资源 (在本实施例的一些具体阐述中采用此名称)。
该步骤中, 具体的, 基站可以根据资源的分配, 在基站的传输带宽配置中 选取一部分频率资源作为分配给该窄带终端的第一频率资源。 第一频率资源上 可以调度多个窄带终端。 而且, 第一频率资源的带宽不超过窄带终端的传输带 宽配置, 这样, 窄带终端可以对整个第一频率资源上发送的数据进行接收, 第 一频率资源的带宽可以等于窄带终端的传输带宽配置, 如 6 个 RB, 也就是 1080KHz。
另外, 优选的, 基站可以根据其传输带宽配置中划分至少一个频率资源, 此至少一个频率资源的带宽小于或者等于窄带终端的传输带宽配置。 当执行步 骤 301时,基站可以在这至少一个频率资源中确定出第一频率资源分配给该窄 带终端。
可以根据基站的传输带宽配置的带宽值(如 RB数), 在其传输带宽配置 中, 划分出多个与窄带终端的传输带宽配置的带宽值相同的频率资源, 划分的 频率资源的数目越多则带宽资源的利用率越高。 例如, 基站的传输带宽配置为 66个 RB, 窄带终端的传输带宽配置为 6个 RB, 可以将基站的传输带宽配置 划分为 11 个频率资源, 每个频率资源上都可以调度多个窄带终端。 在执行该 步骤时, 基站可以在多个频率资源中选取一个作为第一频率资源, 并在选取的 第一频率资源范围内对窄带终端进行调度。
步骤 302, 基站将第一频率资源的信息发送给该窄带终端。 第一频率资源的信息用于确定该频率资源在频域上的位置, 具体可以是: 频率资源的起始频率位置和频率资源的带宽; 或, 频率资源的结束频率位置和 频率资源的带宽; 或, 频率资源的起始频率位置和频率资源的结束频率位置; 或, 频率资源的中间频率位置和频率资源的带宽。
其中, 频率资源的起始频率位置可以是该频率资源的起始频点, 或起始频 点对应的色对无线频率信道号 ( Absolute Radio Frequency Channel Number, ARFCN )信息, 或起始的 RB编号。 结束频率位置可以是窄带频率资源的结束 频点, 或结束频点对应的 ARFCN信息, 或结束的 RB编号。 中间频率位置可 以是窄带频率资源的中间频点, 或中间频点对应的 ARFCN信息。 或者, 对于 窄带频率资源为奇数个 RB的情况, 中间频率位置可以是中间 RB的编号; 对 于窄带频率资源为偶数个 RB的情况, 中间频率位置可以是中间的两个 RB中 编号为奇数的 RB的编号, 或中间频率位置可以是中间的两个 RB中编号为偶 数的 RB的编号。 ARFCN信息可以是 ARFCN的数值也可以是能够对应得到 ARFCN数值的其它信息。
对于上述 RB编号的设置, 可以采用如下方式: 一种方式是, 对系统最大 RB数( 110个)对应的所有 RB进行编号, 另一种方式是, 对基站的传输带宽 配置中所包括的 RB进行编号。
另外, 基站和窄带终端可以预先约定分配的频率资源的带宽, 即基站和窄 带终端分别预先存储分配的频率资源的带宽, 那么此频率资源的信息可以是: 频率资源的起始频率位置; 或, 频率资源的结束频率位置; 或, 频率资源的中 间频率位置。
另外, 第一频率资源的信息还可以是第一频率资源的基准频率信息, 该基 准频率信息可以是基准频率的频点值或基准频率对应的 ARFCN信息等,其中, 基准频率可以是作为确定第一频率资源在频域上位置的频率,基准频率在相应 的第一频率资源的范围内。
相应的, 该步骤的处理可以是: 基站将第一频率资源的基准频率信息发送 给窄带终端; 或者, 基站将第一频率资源的基准频率信息和第一频率资源的带 宽发送给窄带终端。 相应的, 窄带终端根据第一频率资源的基准频率信息确定 第一频率资源的基准频率, 并根据第一频率资源的基准频率, 第一频率资源的 带宽(可以是预先存储的也可以是基站发送的 )和第一频率资源的基准频率在 第一频率资源中的相对位置, 确定第一频率资源。 例如, 第一频率资源的带宽 为 2MHz, 基准频率为 15MHz, 第一频率资源的基准频率在第一频率资源中的 相对位置为基准频率在第一频率资源的中间位置, 那么, 可以确定第一频率资 源为 14~16MHz。
对于这种情况,基站和窄带终端可以预先约定基准频率在第一频率资源中 的相对位置信息, 即窄带终端和基站分别预先存储基准频率在第一频率资源中 的相对位置信息。此外,基站和窄带终端还可以预先约定第一频率资源的带宽。 上述相对位置信息可以是在第一频率资源的各 RB中基准频率所在的 RB和该 RB 中基准频率所在的子载波, 例如, 可以约定基准频率在窄带频率资源的 6 个 RB中的第 2个 RB的第 2个子载波上(由低频数起)。
优选的, 第一频率资源的基准频率可以是起始频率、 中间频率或者结束频 率。
可选的, 上述基准频率信息对应的子载波可以用于进行数据的传输(包括 数据信息或控制信息的传输)。
优选的, 上述基准频率信息可以是基准频率的 ARFCN。
为了降低 ARFCN发送开销, 可以预先将 ARFCN按对应频率的大小顺序 进行分组, 每组中包含有预设数目个 ARFCN , 为各组分配组标识, 并为组内 的各 ARFCN按对应频率的顺序分配组内编号, 终端和基站存储各 ARFCN对 应的组标识和组内编号。 基于此, 上述 ARFCN信息可以包括相应 ARFCN的 组标识和组内编号。 这样, 采用发送 ARFCN的组标识和组内编号的方式, 取 代直接发送 ARFCN, 可以降低 ARFCN发送的开销, 终端根据组标识和组内 编号就可以确定对应的频点。
另外, 基准频率信息还可以是基准频率的 ARFCN在基准频率的 ARFCN 所属频带分组内的编号, 其中, ARFCN所属频带分组是根据 ARFCN所属频 带划分得到的具有相同频带的 ARFCN集合。
在对 ARFCN分组时, 各 ARFCN可以按照所属频带的不同划分为多组, 可以将同一频带内对应的 ARFCN分在一个组中, 属于相同频带(即属于相同 组) 的多个 ARFCN各自分配有频带分组内的编号, ARFCN的组标识可以采 用其所属频带的信息。 基站和终端可以预先约定存储 ARFCN与所属频带、 频 带分组内的编号的对应关系,这样,终端可以根据接收到的基准频率的 ARFCN 在基准频率的 ARFCN所属频带分组内的编号和终端当前所属的频带, 确定对 应的基准频率。 这里的组标识可以对应频带信息, 频带信息可以是频带内所有 ARFCN对应的开始载波频率值, 即频带的开始载波频率值, 频带分组内的编 号对应 ARFCN的数值或对应相对于开始载波频率值的频率偏移值。 频带分组 内的编号采用的比特(bit )数可以是所有组(或频带) 中具有最多 ARFCN的 组所需要的比特数。
上述处理中, 只需要发送 ARFCN 的频带分组内的标识, 取代直接发送 ARFCN , 可以降低 ARFCN发送的开销。 例如, 系统中定义了 256个 ARFCN , 这样,传输 ARFCN则需要 8bit,如果将 256的 ARFCN分为 8组,每组 32个, 那么每个频带分组内的编号则有 32个,相应的传输组内编号需要 5bit,节约了 具体的, 基站可以通过物理下行控制信道( Physical Downlink Control Channal, PDCCH )将第一频率资源的信息发送给窄带终端; 或者, 可以通过 增强物理下行控制信道 ( Enhanced Physical Downlink Control Channal , EPDCCH )将第一频率资源的信息发送给窄带终端,在 PDCCH和 EPDCCH上 具体可以通过下行控制信息( Downlink Control Information, DCI )消息进行发 送; 或者, 可以通过广播信道将第一频率资源的信息发送给窄带终端, 在广播 信道上具体可以通过主信息块 ( Master Information Block, MIB ) 消息进行发 送; 或者, 可以通过物理下行共享信道(Physical Downlink Shared Channel, PDSCH )将第一频率资源的信息发送给窄带终端, 在 PDSCH上具体可以通过 无线资源控制 (Radio Resource Control, RRC ) 消息或媒质接入控制 (Media Access Control Control Element, MAC CE ) 消息将第一频率资源的信息发送 给窄带终端。
步骤 303, 窄带终端接收基站发送的第一频率资源的信息。 具体的, 窄带 终端可以通过 PDCCH、 EPDCCH, PDSCH或广播信道接收基站发送的第一频 率资源的信息。
步骤 304, 窄带终端根据第一频率资源的信息确定第一频率资源。
进一步的, 窄带终端可以根据第一频率资源的信息, 将自身传输带宽配置 对应的频率资源设置为该第一频率资源。 具体可以是将自身传输带宽配置对应 的信道带宽的载波频率设置为该第一频率资源所对应的信道带宽的载波频率。 窄带终端的传输带宽配置是窄带终端基带当前能够进行有效数据传输的频率 范围。
具体的, 如果第一频率资源的信息中包括第一频率资源的基准频率信息, 终端可以根据第一频率资源的基准频率信息确定第一频率资源的基准频率, 并 根据第一频率资源的基准频率, 第一频率资源的带宽(第一频率资源的带宽可 以包括在第一频率资源的信息中, 也可以预先存储在终端)和第一频率资源的 基准频率在第一频率资源中的相对位置, 确定第一频率资源。 例如, 第一频率 资源的带宽为 2MHz, 基准频率为 15MHz, 第一频率资源的基准频率在第一频 率资源中的相对位置为基准频率在第一频率资源的中间位置, 那么, 可以确定 第一频率资源为 14~16MHz。
具体的, 如果第一频率资源的信息中包括 RB编号 (如起始的 RB编号、 结束的 RB编号、中间 RB的编号等 ),终端可以获取当前系统载波的频率范围, 根据系统载波的频率范围和第一频率资源的信息中包括 RB编号, 确定第一频 率资源的相应频点 (起始频点、 结束频点或中间频点)。
具体的, 如果第一频率资源的信息中包括频点 (如起始频点、 结束频点、 中间频点等), 可以根据频点对窄带终端的传输带宽配置的频率资源或信道带 宽的载波频率进行设置,设置时可以借助使用第一频率资源的信息中包括的第 一频率资源的带宽或预先约定的第一频率资源的带宽。
具体的, 如果第一频率资源的信息中包括频点 (如起始频点、 结束频点、 中间频点等)对应的 ARFCN信息, 可以根据 ARFCN信息确定对应的频点, 然后,根据频点对窄带终端的传输带宽配置的频率资源或信道带宽的载波频率 进行设置,设置时可以借助使用第一频率资源的信息中包括的第一频率资源的 带宽或预先约定的第一频率资源的带宽。
步骤 305, 基站进行数据发送。 其中, 基站发送的数据可以包括控制信息 和数据信息。
具体的, 基站在进行整个传输带宽配置的数据发送前, 进行终端的资源分 配时, 可以在上述第一频率资源中为该窄带终端分配时频资源, 然后将发送给 该终端的数据分配到相应的时频位置。基站可以在第一频率资源内的控制信道 上, 通过指示信息指示该窄带终端, 发送给该窄带终端的数据在第一频率资源 内的具体时频位置。
对于上述第一频率资源的信息为第一频率资源的基准频率信息的情况, 则 基站进行数据发送的处理可以是: 基站在至少一个子载波上发送数据, 此至少 一个子载波包括基准频率对应的子载波。
步骤 306, 窄带终端根据第一频率资源接收基站发送的数据。 窄带终端可以根据第一频率资源的信息确定第一频率资源, 并根据第一频 率资源接收基站发送的数据。
具体的, 窄带终端可以对为其分配的整个第一频率资源上的数据进行接 收,读取基站发送的指示信息,获取其中指示的时频位置, 并在接收的数据中, 选取相应时频位置上的数据。
上述步骤 305和步骤 306, 可选的, 基站可以发送参考信号, 窄带终端可 以根据第一频率资源的信息确定第一频率资源, 并根据第一频率资源接收基站 发送的参考信号。 即在第一频率资源上对基站发送的参考信号进行接收, 进而 可以进行信道估计、 时域或频域同步或信道质量测量等处理。 具体的, 基站可 以在至少一个频率资源上发送参考信号。 窄带终端可以根据第一频率资源的信 息确定第一频率资源, 并根据第一频率资源接收基站在至少一个频率资源上发 送的参考信号。
其中, 参考信号可以是传统的已定义的参考信号, 例如, 小区专用参考信 号 ( Cell specific reference signal, CRS )、信道状态信息参考信号 ( Channel state information-reference signal , CSI-RS ),降低的参考信号( Reduced CRS , RCRS ) 或解调参考信号( Demodulation reference signal, DMRS )等。其中, CRS、 CSI-RS、
RCRS都是基站全传输带宽配置发送的参考信号, 基站对参考信号进行全传输 带宽配置的发送, 窄带终端可以在窄带频率资源上对参考信号进行接收。
另外, 参考信号还可以是新定义的参考信号, 新定义的参考信号可以是与 传统已定义的参考信号处于不同的时频位置的参考信号。对于上述基站根据其 传输带宽配置划分至少一个频率资源的情况,基站可以在此至少一个频率资源 上发送参考信号。 此至少一个频率资源中, 包括上述为窄带终端分配的第一频 率资源。
相对于传统的宽带的参考信号 (基站全传输带宽配置发送的参考信号), 这种只在基站的传输带宽配置中的部分频率资源上发送的参考信号可以称作 窄带的参考信号。
优选的, 可以将上述划分出的至少一个频率资源中的每个频率资源分别作 为第一频率资源分配给不同的窄带终端。 这样, 在没有为窄带终端分配第一频 率资源的频率资源上, 则不发送此窄带的参考信号, 可以提高系统资源的利用 率。
对于上述窄带的参考信号, 在子帧中的时频位置可以使用对应的传统参考 信号的时频位置, 例如, 窄带的 CRS可以使用传统的 CRS在子帧中的时频位 置, 当然, 也可以使用新定义的参考信号的时频位置。 如果窄带的参考信号和 对应的传统参考信号(宽带的参考信号)要同时进行发送, 则可以采用码分复 用的方式在相同的时频位置发送。
在各频段上使用的窄带的参考信号的序列, 可以复用传统的参考信号在相 应的频段上的序列, 例如, 在某个时频位置上发送的窄带的 CRS 的序列, 可 以使用该时频位置上发送的传统的 CRS 的序列。 当然, 也可以不复用传统参 考信号的序列, 而是配置新的参考信号或为参考信号配置新的序列。 例如, 对 于传统的 CRS, 基站和终端一般约定有 110个 RB对应的 CRS序列, 根据基 站的传输带宽配置,可以取 110个 RB中间的若干个 RB的 CRS序列进行发送, 如,基站的传输带宽配置为 50个 RB, 则取 110个 RB中间的 50个 RB对应的 CRS序列作为基站的传输带宽配置上发送的 CRS序列。
优选的,基站可以在上述至少一个频率资源上使用相同的参考信号序列发 送参考信号, 相应的, 终端可以根据上述第一频率资源的信息确定第一频率资 源, 并根据第一频率资源接收基站在至少一个频率资源上使用相同的参考信号 序列发送的参考信号。
对于上述划分出的频率资源的数目为多个的情况, 基站发送参考信号时, 在各个频率资源上可以使用相同的参考信号序列。 优选的, 在配置新定义的窄 带的 CRS序列时, 对于划分出的每个频率资源, 可以根据各频率资源的带宽, 取 110个 RB中间的若干个 RB的 CRS序列进行发送, 如, 基站的传输带宽配 置为 50个 RB, 划分的每个频率资源的带宽为 6个 RB, 那么, 为每个频率资 源都可以取 110个 RB中间的 6个 RB对应的 CRS序列,分别在划分的每个频 率资源上进行发送, 或者, 也可以根据各频率资源位于 50个 RB或 110个 RB 中的对应频率资源位置来确定 CRS序列。
本发明实施例中,在发送参考信号时,还可以对增强资源元素组( Enhanced resource element group, EREG )使用的资源元素 ( Resource Element, RE )进 行设置, 根据具体需求可以采用如下设置:
基站确定 EREG ( EPDCCH就是映射到若干的 EREG进行传输的)使用的 RE中不包括 CRS使用的 RE。 CRS和 DMRS都可以用作信道估计, 基于上述 EREG的设置, 基站可以不发送 DMRS, 终端可以基于 CRS进行信道估计, 以完成信道解调。 这样, 可以节省发送 DMRS 所要占用的资源, 提高资源利 用率。
或者, 基站确定 EREG使用的 RE中不包括 CRS使用的 RE和 DMRS使 用的 RE。 这样, 可以对 CRS和 DMRS同时传输, 基于 CRS和 DMRS进行信 道估计, 对于信道质量较差的情况, 可以提高信道估计的精度。
本发明实施例中, 可以对终端使用的用于解调的参考信号类型进行配置: 采用 CRS进行信道解调, 或者, 采用 DMRS进行信道解调, 或者, 同时采用 CRS和 DMRS进行信道解调。 可以通过信令配置或预定义参考信号的传输子 帧, 窄带 RS的传输子帧可以包括用于传输 RCRS的子帧, 或者, 窄带 RS的 传输子帧可以包括用于传输 MIB或 SIB的子帧。
本发明实施例中, 可以通过基站向终端发送消息的方式通知窄带终端参考 信号信息(参考信号类型、 RS索引等), 使窄带终端存储参考信号信息, 然后 窄带终端可以根据参考信号信息和接收的参考信号进行后续的处理, 具体过程 可以: ¾口下:
首先,基站将第一频率资源的信息和上述划分的至少一个频率资源对应的 参考信号信息发送给窄带终端。 相应的, 窄带终端接收基站发送的第一频率资 源的信息和上述至少一个频率资源对应的参考信号信息。 例如, 基站可以通过 同步信道或广播信道通知该窄带终端至少一个频率资源对应的参考信号信息, 相应的终端可以在同步信道或广播信道上获取此参考信号信息。
优选的, 可以在窄带终端接入基站时进行此发送操作, 或者可以在协作多 点通信 ( Coordinated Multipoint Transmission, CoMP ) 的场景中进行基站切换 时由切换的目标基站进行此发送操作。
具体的,基站可以通过向窄带终端发送指示消息的方式来发送参考信号信 息。 在指示消息中携带的 RS信息可以包括 RS索引, 窄带终端存储有不同 RS 索引对应的预设的 RS, 通过 RS索引可以确定出相应的预设的 RS。 RS信息还 可以包括 RS类型(可以是一种类型或多种类型的组合)、窄带频率资源的标识、 载波标识、 RS天线端口数、 RS加扰标识、 RS频域偏移等信息中的若干种信 息。 该指示消息可以是 RRC消息或 DCI消息等。
然后, 基站发送参考信号。 相应的, 窄带终端根据接收到的参考信号, 以 及上述参考信号信息, 进行信道估计、 时域频域同步或信道质量测量。
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 实施例三
基于相同的技术构思, 本发明实施例还提供了一种基站, 如图 4所示, 所 述基站包括:
分配模块 410, 用于为终端分配第一频率资源, 所述第一频率资源的带宽 小于或者等于所述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基 站的传输带宽配置;
发送模块 420, 用于将所述第一频率资源的信息发送给所述终端, 以使所 述终端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一 频率资源接收所述基站发送的数据。
优选的, 所述发送模块 420, 用于:
将所述第一频率资源的基准频率信息发送给所述终端, 以使得所述终端根 据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频率, 并根 据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第一频率资 源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率资源。
优选的, 所述发送模块 420, 用于:
将所述第一频率资源的基准频率信息和所述第一频率资源的带宽发送给 所述终端。
优选的, 所述第一频率资源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
优选的, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所 述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号, 其 中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同 频带的 ARFCN集合。
优选的, 所述发送模块 420, 用于:
通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送给所述终 端; 或者,
通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信息发送给 所述终端; 或者, 通过广播信道将所述第一频率资源的信息发送给所述终端; 或者, 通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送给所述终 端。
优选的, 所述分配模块 410, 用于:
根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少一个频率 资源的带宽小于或者等于所述终端的传输带宽配置;
从所述至少一个频率资源中确定出第一频率资源分配给所述终端。
优选的, 所述发送模块 420, 用于:
将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上发送的参考信号。
优选的, 所述发送模块 420, 用于:
将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上使用相同的参考信号序列发送的参考信号。
优选的, 所述发送模块 420, 用于:
将所述第一频率资源的信息和所述至少一个频率资源对应的参考信号信 息发送给所述终端。
优选的, 所述发送模块 420, 还用于:
确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专用参考信 号 CRS使用的 RE。
优选的, 所述发送模块 420, 还用于:
在至少一个子载波上发送数据, 所述子载波包括所述基准频率对应的子载
基于相同的技术构思, 本发明实施例还提供了一种终端, 如图 5所示, 所 述终端包括:
信息接收模块 510, 用于接收基站发送的第一频率资源的信息;
确定模块 520,用于根据所述第一频率资源的信息确定所述第一频率资源; 数据接收模块 530,用于根据所述第一频率资源接收所述基站发送的数据。 优选的, 所述第一频率资源的信息包括: 所述第一频率资源的基准频率信 息;
所述确定模块 520, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置,确定所述第一频率 资源。
优选的, 所述第一频率资源的信息包括: 所述第一频率资源的基准频率信 息和所述第一频率资源的带宽;
所述确定模块 520, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置,确定所述第一频率 资源。
优选的, 所述第一频率资源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
优选的, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所 述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号, 其 中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同 频带的 ARFCN集合。
优选的, 所述信息接收模块 510, 用于:
通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的信息; 或 者,
通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率资源的信 息; 或者,
通过广播信道接收基站发送的第一频率资源的信息; 或者,
通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的信息。 优选的, 所述数据接收模块 530, 用于:
根据所述第一频率资源接收所述基站发送的参考信号。
优选的, 所述信息接收模块 510, 用于:
接收基站发送的第一频率资源的信息和至少一个频率资源对应的参考信 号信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽配置划分 的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配置。 优选的, 所述数据接收模块 530, 还用于:
根据接收到的参考信号, 以及所述参考信号信息, 进行信道估计、 时域或 频域同步或信道质量测量。
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 实施例四
基于相同的技术构思, 本发明实施例还提供了一种数据传输的系统, 所述 系统包括如上述实施例所述的基站和终端。
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 实施例五
本发明实施例提供了一种基站。 该基站可以包括发射机、 接收机、 存储器 以及分别与发射机、 接收机和存储器连接的处理器。 此外, 该基站还可以包括 天线、 基带处理部件、 中射频处理部件、 输入输出装置等通用部件, 本发明实 施例在此不做任何限制。
其中, 存储器中存储一组程序代码, 且处理器用于调用存储器中存储的程 序代码, 用于执行以上方法实施例中任一种方法, 例如, 执行以下操作: 基站为终端分配第一频率资源, 所述第一频率资源的带宽小于或者等于所 述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基站的传输带宽配 置;
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站发送的数据。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述 终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述基站将所述第一频率资源的基准频率信息发送给所述终端, 以使得所 述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准 频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述 第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频 率资源。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 包括: 所述基站将所述第一频率资源的基准频率信息和所述第一频率资源的带 宽发送给所述终端。
优选的, 所述第一频率资源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
优选的, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所 述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号, 其 中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同 频带的 ARFCN集合。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 具体为: 所述基站通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送 给所述终端; 或者,
所述基站通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信 息发送给所述终端; 或者,
所述基站通过广播信道将所述第一频率资源的信息发送给所述终端; 或 者,
所述基站通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送 给所述终端。
优选的, 基站为终端分配第一频率资源, 包括:
所述基站根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少 一个频率资源的带宽小于或者等于所述终端的传输带宽配置;
所述基站从所述至少一个频率资源中确定出第一频率资源分配给所述终 端。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述 终端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频 率资源接收所述基站发送的数据, 包括:
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上发送的参考信号。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述 终端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频 率资源接收所述基站在所述至少一个频率资源上发送的参考信号, 包括: 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上使用相同的参考信号序列发送的参考 信号。
优选的, 所述基站将所述第一频率资源的信息发送给所述终端, 包括: 所述基站将所述第一频率资源的信息和所述至少一个频率资源对应的参 考信号信息发送给所述终端。
优选的, 所述方法还包括:
所述基站确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专 用参考信号 CRS使用的 RE。
优选的, 所述所述基站将所述第一频率资源的信息发送给所述终端之后, 还包括:
所述基站在至少一个子载波上发送数据, 所述子载波包括所述基准频率对 应的子载波。 本发明实施例提供了一种终端。 该终端可以包括发射机、 接收机、 存储器 以及分别与发射机、 接收机和存储器连接的处理器。 此外, 该终端还可以包括 天线、 基带处理部件、 中射频处理部件、 输入输出装置等通用部件, 本发明实 施例在此不做任何限制。
其中, 存储器中存储一组程序代码, 且处理器用于调用存储器中存储的程 序代码, 用于执行以上方法实施例中任一种方法, 例如, 执行以下操作: 终端接收基站发送的第一频率资源的信息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源; 所述终端根据所述第一频率资源接收所述基站发送的数据。 优选的, 所述第一频率资源的信息包括: 所述第一频率资源的基准频率信 息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源 的基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽 和所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述 第一频率资源。
优选的, 所述第一频率资源的信息包括: 所述第一频率资源的基准频率信 息和所述第一频率资源的带宽;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源 的基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽 和所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述 第一频率资源。
优选的, 所述第一频率资源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
优选的, 所述基准频率信息, 包括: 所述基准频率的 ARFCN; 或者, 所 述基准频率的 ARFCN在所述基准频率的 ARFCN所属频带分组内的编号, 其 中, 所述 ARFCN所属频带分组是根据 ARFCN所属频带划分得到的具有相同 频带的 ARFCN集合。
优选的, 所述终端接收基站发送的第一频率资源的信息, 具体为: 所述终端通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的 信息; 或者,
所述终端通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率 资源的信息; 或者,
所述终端通过广播信道接收基站发送的第一频率资源的信息; 或者, 所述终端通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的 信息。
优选的,所述终端根据所述第一频率资源接收所述基站发送的数据,包括: 所述终端根据所述第一频率资源接收所述基站发送的参考信号。
优选的, 所述终端接收基站发送的第一频率资源的信息, 包括: 所述终端接收基站发送的第一频率资源的信息和至少一个频率资源对应 的参考信号信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽 配置划分的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配 置。
优选的, 所述方法还包括:
所述终端根据接收到的参考信号,以及所述参考信号信息,进行信道估计、 时域或频域同步或信道质量测量。
本发明实施例中, 基站在其传输带宽配置中为终端分配频率资源, 并将该 频率资源的信息发送给该终端,使终端可以根据该频率资源接收基站发送的数 据。 这样, 基站和终端的数据传输可以在不限于其传输带宽配置的中间频率资 源位置的频率资源上进行, 从而, 可以提高无线通信系统的资源利用率。 本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通 过硬件来完成, 也可以通过程序来指令相关的硬件完成, 所述的程序可以存储 于一种计算机可读存储介质中, 上述提到的存储介质可以是只读存储器, 磁盘 或光盘等。 以上所述仅为本发明的较佳实施例, 并不用以限制本发明, 凡在本发明的 精神和原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的 保护范围之内。

Claims

权 利 要 求 书
1、 一种数据传输的方法, 其特征在于, 所述方法包括:
基站为终端分配第一频率资源, 所述第一频率资源的带宽小于或者等于所 述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基站的传输带宽配 置;
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站发送的数据。
2、 根据权利要求 1所述的方法, 其特征在于, 所述基站将所述第一频率资 源的信息发送给所述终端, 以使所述终端根据所述第一频率资源的信息确定所 述第一频率资源, 包括:
所述基站将所述第一频率资源的基准频率信息发送给所述终端, 以使得所 述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率 资源。
3、 根据权利要求 1所述的方法, 其特征在于, 所述基站将所述第一频率资 源的信息发送给所述终端, 包括:
所述基站将所述第一频率资源的基准频率信息和所述第一频率资源的带宽 发送给所述终端。
4、 根据权利要求 2或者 3所述的方法, 其特征在于, 所述第一频率资源的 基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
5、 根据权利要求 2至 4任一项所述的方法, 其特征在于, 所述基准频率信 息, 包括: 所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所述基 准频率的 ARFCN所属频带分组内的编号, 其中, 所述 ARFCN所属频带分组是 根据 ARFCN所属频带划分得到的具有相同频带的 ARFCN集合。
6、 根据权利要求 1至 5任一项所述的方法, 其特征在于, 所述基站将所述 第一频率资源的信息发送给所述终端, 具体为:
所述基站通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送 给所述终端; 或者, 所述基站通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信息 发送给所述终端; 或者,
所述基站通过广播信道将所述第一频率资源的信息发送给所述终端; 或者, 所述基站通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送 给所述终端。
7、 根据权利要求 1至 6任一项所述的方法, 其特征在于, 基站为终端分配 第一频率资源, 包括:
所述基站根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少 一个频率资源的带宽小于或者等于所述终端的传输带宽配置;
所述基站从所述至少一个频率资源中确定出第一频率资源分配给所述终 端。
8、 根据权利要求 7所述的方法, 其特征在于, 所述基站将所述第一频率资 源的信息发送给所述终端, 以使所述终端根据所述第一频率资源的信息确定所 述第一频率资源, 并根据所述第一频率资源接收所述基站发送的数据, 包括: 所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上发送的参考信号。
9、 根据权利要求 8所述的方法, 其特征在于, 所述基站将所述第一频率资 源的信息发送给所述终端, 以使所述终端根据所述第一频率资源的信息确定所 述第一频率资源, 并根据所述第一频率资源接收所述基站在所述至少一个频率 资源上发送的参考信号, 包括:
所述基站将所述第一频率资源的信息发送给所述终端, 以使所述终端根据 所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接 收所述基站在所述至少一个频率资源上使用相同的参考信号序列发送的参考信 号。
10、 根据权利要求 8或者 9所述的方法, 其特征在于, 所述基站将所述第 一频率资源的信息发送给所述终端, 包括:
所述基站将所述第一频率资源的信息和所述至少一个频率资源对应的参考 信号信息发送给所述终端。
11、 根据权利要求 8至 10任一项所述的方法, 其特征在于, 所述方法还包 括: 所述基站确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专用 参考信号 CRS使用的 RE。
12、 根据权利要求 2至 11任一项所述的方法, 其特征在于, 所述所述基站 将所述第一频率资源的信息发送给所述终端之后, 还包括:
所述基站在至少一个子载波上发送数据, 所述子载波包括所述基准频率对 应的子载波。
13、 一种数据传输的方法, 其特征在于, 所述方法包括:
终端接收基站发送的第一频率资源的信息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源;
所述终端根据所述第一频率资源接收所述基站发送的数据。
14、 根据权利要求 13所述的方法, 其特征在于, 所述第一频率资源的信息 包括: 所述第一频率资源的基准频率信息;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源的 基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和 所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第 一频率资源。
15、 根据权利要求 13所述的方法, 其特征在于, 所述第一频率资源的信息 包括: 所述第一频率资源的基准频率信息和所述第一频率资源的带宽;
所述终端根据所述第一频率资源的信息确定所述第一频率资源, 包括: 所述终端根据所述第一频率资源的基准频率信息确定所述第一频率资源的 基准频率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和 所述第一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第 一频率资源。
16、 根据权利要求 14或者 15所述的方法, 其特征在于, 所述第一频率资 源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
17、 根据权利要求 14至 16任一项所述的方法, 其特征在于, 所述基准频 率信息, 包括: 所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所 述基准频率的 ARFCN所属频带分组内的编号, 其中, 所述 ARFCN所属频带分 组是根据 ARFCN所属频带划分得到的具有相同频带的 ARFCN集合。
18、 根据权利要求 13至 17任一项所述的方法, 其特征在于, 所述终端接 收基站发送的第一频率资源的信息, 具体为:
所述终端通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的 信息; 或者,
所述终端通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率资 源的信息; 或者,
所述终端通过广播信道接收基站发送的第一频率资源的信息; 或者, 所述终端通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的 信息。
19、 根据权利要求 13至 18任一项所述的方法, 其特征在于, 所述终端根 据所述第一频率资源接收所述基站发送的数据, 包括:
所述终端根据所述第一频率资源接收所述基站发送的参考信号。
20、 根据权利要求 19所述的方法, 其特征在于, 所述终端接收基站发送的 第一频率资源的信息, 包括:
所述终端接收基站发送的第一频率资源的信息和至少一个频率资源对应的 参考信号信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽配 置划分的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配置。
21、 根据权利要求 19或者 20所述的方法, 其特征在于, 所述方法还包括: 所述终端根据接收到的参考信号, 以及所述参考信号信息, 进行信道估计、 时域或频域同步或信道质量测量。
22、 一种基站, 其特征在于, 所述基站包括:
分配模块, 用于为终端分配第一频率资源, 所述第一频率资源的带宽小于 或者等于所述终端的传输带宽配置, 所述终端的传输带宽配置小于所述基站的 传输带宽配置;
发送模块, 用于将所述第一频率资源的信息发送给所述终端, 以使所述终 端根据所述第一频率资源的信息确定所述第一频率资源, 并根据所述第一频率 资源接收所述基站发送的数据。
23、 根据权利要求 22所述的基站, 其特征在于, 所述发送模块, 用于: 将所述第一频率资源的基准频率信息发送给所述终端, 以使得所述终端根 据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频率, 并根 据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第一频率资 源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率资源。
24、 根据权利要求 22所述的基站, 其特征在于, 所述发送模块, 用于: 将所述第一频率资源的基准频率信息和所述第一频率资源的带宽发送给所 述终端。
25、 根据权利要求 23或者 24所述的基站, 其特征在于, 所述第一频率资 源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
26、 根据权利要求 23至 25任一项所述的基站, 其特征在于, 所述基准频 率信息, 包括: 所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所 述基准频率的 ARFCN所属频带分组内的编号, 其中, 所述 ARFCN所属频带分 组是根据 ARFCN所属频带划分得到的具有相同频带的 ARFCN集合。
27、 根据权利要求 22至 26任一项所述的基站, 其特征在于, 所述发送模 块, 用于:
通过物理下行控制信道 PDCCH将所述第一频率资源的信息发送给所述终 端; 或者,
通过增强物理下行控制信道 EPDCCH将所述第一频率资源的信息发送给所 述终端; 或者,
通过广播信道将所述第一频率资源的信息发送给所述终端; 或者, 通过物理下行共享信道 PDSCH将所述第一频率资源的信息发送给所述终 端。
28、 根据权利要求 22至 27任一项所述的基站, 其特征在于, 所述分配模 块, 用于:
根据所述基站的传输带宽配置划分至少一个频率资源, 所述至少一个频率 资源的带宽小于或者等于所述终端的传输带宽配置;
从所述至少一个频率资源中确定出第一频率资源分配给所述终端。
29、 根据权利要求 28所述的基站, 其特征在于, 所述发送模块, 用于: 将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上发送的参考信号。
30、 根据权利要求 29所述的基站, 其特征在于, 所述发送模块, 用于: 将所述第一频率资源的信息发送给所述终端, 以使所述终端根据所述第一 频率资源的信息确定所述第一频率资源, 并根据所述第一频率资源接收所述基 站在所述至少一个频率资源上使用相同的参考信号序列发送的参考信号。
31、 根据权利要求 29或者 30所述的基站, 其特征在于, 所述发送模块, 用于:
将所述第一频率资源的信息和所述至少一个频率资源对应的参考信号信息 发送给所述终端。
32、 根据权利要求 29至 31任一项所述的基站, 其特征在于, 所述发送模 块, 还用于:
确定增强资源元素组 EREG使用的资源元素 RE中不包括小区专用参考信号 CRS使用的 RE。
33、 根据权利要求 23至 32任一项所述的基站, 其特征在于, 所述发送模 块, 还用于:
在至少一个子载波上发送数据, 所述子载波包括所述基准频率对应的子载 波。
34、 一种终端, 其特征在于, 所述终端包括:
信息接收模块, 用于接收基站发送的第一频率资源的信息;
确定模块, 用于根据所述第一频率资源的信息确定所述第一频率资源; 数据接收模块, 用于根据所述第一频率资源接收所述基站发送的数据。
35、 根据权利要求 34所述的终端, 其特征在于, 所述第一频率资源的信息 包括: 所述第一频率资源的基准频率信息;
所述确定模块, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率 资源。
36、 根据权利要求 34所述的终端, 其特征在于, 所述第一频率资源的信息 包括: 所述第一频率资源的基准频率信息和所述第一频率资源的带宽;
所述确定模块, 用于:
根据所述第一频率资源的基准频率信息确定所述第一频率资源的基准频 率, 并根据所述第一频率资源的基准频率, 所述第一频率资源的带宽和所述第 一频率资源的基准频率在所述第一频率资源中的相对位置, 确定所述第一频率 资源。
37、 根据权利要求 35或者 36所述的终端, 其特征在于, 所述第一频率资 源的基准频率包括: 起始频率, 或者中间频率, 或者结束频率。
38、 根据权利要求 35至 37任一项所述的终端, 其特征在于, 所述基准频 率信息, 包括: 所述基准频率的 ARFCN; 或者, 所述基准频率的 ARFCN在所 述基准频率的 ARFCN所属频带分组内的编号, 其中, 所述 ARFCN所属频带分 组是根据 ARFCN所属频带划分得到的具有相同频带的 ARFCN集合。
39、 根据权利要求 34至 38任一项所述的终端, 其特征在于, 所述信息接 收模块, 用于:
通过物理下行控制信道 PDCCH接收基站发送的第一频率资源的信息; 或 者,
通过增强物理下行控制信道 EPDCCH接收基站发送的第一频率资源的信 息; 或者,
通过广播信道接收基站发送的第一频率资源的信息; 或者,
通过物理下行共享信道 PDSCH接收基站发送的第一频率资源的信息。
40、 根据权利要求 34至 39任一项所述的终端, 其特征在于, 所述数据接 收模块, 用于:
根据所述第一频率资源接收所述基站发送的参考信号。
41、根据权利要求 40所述的终端, 其特征在于, 所述信息接收模块, 用于: 接收基站发送的第一频率资源的信息和至少一个频率资源对应的参考信号 信息, 所述至少一个频率资源是所述基站根据所述基站的传输带宽配置划分的, 所述至少一个频率资源的带宽小于或者等于所述终端传输带宽配置。
42、 根据权利要求 40或者 41所述的终端, 其特征在于, 所述数据接收模 块, 还用于:
根据接收到的参考信号, 以及所述参考信号信息, 进行信道估计、 时域或 频域同步或信道质量测量。
43、 一种数据传输的系统, 其特征在于, 所述系统包括如权利要求 22至 33 任一项所述的基站和如权利要求 34至 42任一项所述的终端。
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