WO2017206103A1 - 一种信道估计方法、相关设备及系统 - Google Patents

一种信道估计方法、相关设备及系统 Download PDF

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Publication number
WO2017206103A1
WO2017206103A1 PCT/CN2016/084301 CN2016084301W WO2017206103A1 WO 2017206103 A1 WO2017206103 A1 WO 2017206103A1 CN 2016084301 W CN2016084301 W CN 2016084301W WO 2017206103 A1 WO2017206103 A1 WO 2017206103A1
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Prior art keywords
crs
terminal
damaged
channel estimation
bandwidth
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PCT/CN2016/084301
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English (en)
French (fr)
Inventor
贺宁
叶济宇
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.)
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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 CN201680086274.4A priority Critical patent/CN109314616B/zh
Priority to EP16903488.1A priority patent/EP3457610B1/en
Priority to PCT/CN2016/084301 priority patent/WO2017206103A1/zh
Publication of WO2017206103A1 publication Critical patent/WO2017206103A1/zh
Priority to US16/204,984 priority patent/US10778474B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel estimation method, related device, and system.
  • the Long Term Evolution (LTE) network supports six standard bandwidths of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, and 20MHz. Due to Global System for Mobile Communication (GSM)/Universal Mobile Telecommunications System (UMTS)/Code Division Multiple Access (English: Code Division Multiple Access, English) Abbreviation: CDMA)
  • GSM Global System for Mobile Communication
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • the network cannot carry the intelligent terminal to a large number of voice and data service requirements. Therefore, the intelligent terminal is rapidly moving to the LTE network, resulting in a gradual reduction of the GSM/UMTS/CDMA network load and an LTE network load will gradually increase, in order to properly configure Resources, operators are trying to release the spectrum originally used for GSM/UMTS/CDMA networks for use in LTE networks to improve spectrum efficiency and data throughput.
  • the bandwidth of GSM/UMTS/CDMA is not the standard bandwidth of LTE networks, so the use of non-standard bandwidth will become an important application scenario of L
  • the TTL network needs to compress the standard bandwidth to a non-standard bandwidth.
  • some resource blocks (English: Resource Block, RB for short) are compressed.
  • the standard bandwidth includes RB1, RB2, RB3, ... RB(n-1), RBn before being compressed, and the compressed bandwidth includes RB2, RB3, ... RB(n-1), RBn;
  • the structure of RB is shown in Figure 2. There is one CRS every six subcarriers in the frequency domain, and one CRS every three symbol bits in the time domain. If some RBs are compressed, the RBs in some RBs CRS will be damaged.
  • the channel estimation mechanism in the prior art is: the base station schedules RBs for the terminal, and the terminal selects other RBs from the standard bandwidth to which the scheduled RBs (currently scheduled to its own RBs) belong, and then uses the CRSs in the scheduled RBs and the The CRS in other RBs performs channel estimation.
  • a disadvantage of the prior art is that if the base station compresses the standard bandwidth, the non-standard bandwidth is obtained.
  • the RB (which may be referred to as a "compressed RB") is scheduled to the terminal, and the terminal determines that the compressed RB falls within the range of the standard bandwidth, and then selects other RBs from the standard bandwidth, and then according to the CRS in the compressed RB and the The CRS in the other RBs performs channel estimation. If the other RBs selected from the standard bandwidth are compressed RBs, the channel estimation result of the terminal is inaccurate, resulting in data demodulation services based on the channel estimation result. The demodulation result has a large error.
  • the embodiment of the invention discloses a channel estimation method, a related device and a system, which can improve the accuracy of channel estimation, and solve the problem that the demodulation result of the data demodulation service based on the channel estimation result has a large error.
  • a first aspect of the embodiments of the present invention discloses a channel estimation method, where the method includes:
  • the target RB is an RB in a compressed standard bandwidth
  • the terminal uses the undamaged CRS of the plurality of CRSs for channel estimation, and does not use the damaged CRS of the multiple CRSs for channel estimation.
  • the process of processing the standard bandwidth resulting in a decrease in the width of the standard bandwidth is a process of compressing the standard bandwidth.
  • the terminal determines whether there is a damaged CRS in the target RB, and if so, uses the CRS in the target RB except the damaged CRS for channel estimation, thereby avoiding channel estimation caused by the standard bandwidth being compressed. As a result, a large error occurs, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • the scenario that the plurality of cell measurement reference signals CRS in the target resource block RB have a damaged CRS includes:
  • the scenario that the plurality of cells in the target resource block RB measure the damaged CRS in the reference signal CRS includes:
  • Channel estimation is performed by CRS of each of the plurality of groups
  • the CRS of the first group is damaged when a channel quality estimated by a CRS of the first group of the plurality of groups is lower than a channel quality preset threshold estimated by a CRS of the second group of the plurality of groups
  • the second set of CRSs is intact, and the first set and the second set are any two of the plurality of sets.
  • the scenario that the plurality of cells in the target resource block RB measure the damaged CRS in the reference signal CRS includes:
  • Using a plurality of CRSs of the target RB for channel estimation if it is estimated that the channel quality is lower than a preset threshold, it indicates that there is a damaged CRS in the multiple CRSs, and the CRS in the currently allocated RBs of the terminal is intact. CRS.
  • the standard bandwidth is the bandwidth of the secondary cell.
  • the standard bandwidth of the secondary cell is compressed without compressing the bandwidth of the primary cell, thereby avoiding the impact of the compressed bandwidth on the primary cell.
  • the terminal uses the undamaged CRS in the multiple CRSs to perform channel estimation, without using the Before the CRS of multiple CRSs is used for channel estimation, it also includes:
  • the terminal receives a resource indication message that is sent by the base station in a cross-carrier scheduling manner by using a physical downlink control channel PDCCH of the primary cell, where the resource indication message is used to schedule an RB in the secondary cell for the terminal to transmit data.
  • a resource indication message that is sent by the base station in a cross-carrier scheduling manner by using a physical downlink control channel PDCCH of the primary cell, where the resource indication message is used to schedule an RB in the secondary cell for the terminal to transmit data.
  • an embodiment of the present invention provides a resource scheduling method, where the method includes:
  • the base station compresses the standard bandwidth of the secondary cell to obtain a compressed bandwidth.
  • the base station sends a resource indication message to the terminal in a cross-carrier scheduling manner by using the physical downlink control channel PDCCH of the primary cell, and instructs the terminal to use the resource block RB in the compressed bandwidth to transmit data.
  • the base station After performing the foregoing steps, after the base station compresses the standard bandwidth of the secondary cell to obtain the compressed bandwidth, the base station does not send the resource indication message through the PDCCH of the secondary cell, but schedules the secondary cell for the terminal by using the primary cell in a cross-carrier scheduling manner.
  • the RB in the compressed bandwidth avoids using the PDCCH of the compressed RB, and the RB resource cannot be smoothly scheduled.
  • the resource indication message is further used to indicate a cell measurement reference signal CRS of the RB that is lost in the process of compressing the standard bandwidth, where the terminal A channel estimation is performed for using a CRS other than the CRS of the lost RB in the standard bandwidth.
  • an embodiment of the present invention provides a terminal, where the terminal includes a processor, a memory, and a transceiver, and the processor invokes a program in the memory to perform the following operations:
  • the target RB is an RB in a compressed standard bandwidth
  • Channel estimation is performed by the transceiver using the undamaged CRS of the plurality of CRSs, and the corrupted CRS of the plurality of CRSs is not used for channel estimation.
  • the terminal determines whether there is a damaged CRS in the target RB, and if so, uses the CRS of the target RB except the damaged CRS for channel estimation, thereby avoiding channel estimation caused by the standard bandwidth being compressed. As a result, a large error occurs, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • the multiple cell in the target resource block RB measures a damaged CRS in the reference signal CRS, specifically:
  • the multiple cell in the target resource block RB measures the presence of the damaged CRS in the reference signal CRS, specifically:
  • the CRS of the first group is damaged when a channel quality estimated by a CRS of the first group of the plurality of groups is lower than a channel quality preset threshold estimated by a CRS of the second group of the plurality of groups
  • the second set of CRSs is intact, and the first set and the second set are any two of the plurality of sets.
  • the multiple cell in the target resource block RB measures the presence of the damaged CRS in the reference signal CRS, specifically:
  • Performing channel estimation by using the multiple CRSs of the target RB by the transceiver if it is estimated that the channel quality is lower than a preset threshold, indicating that there is a damaged CRS in the multiple CRSs, where the terminal is currently allocated in the RB CRS is an undamaged CRS.
  • the standard bandwidth is the bandwidth of the secondary cell.
  • the standard bandwidth of the secondary cell is compressed without compressing the bandwidth of the primary cell, thereby avoiding the impact of the compressed bandwidth on the primary cell.
  • the processor by using the transceiver, using the undamaged CRS of the multiple CRSs as a channel Estimating, before using the damaged CRS in the multiple CRSs for channel estimation, a resource indication message that is sent by the transceiver through a physical downlink control channel PDCCH of the primary cell in a cross-carrier scheduling manner, The resource indication message is used to schedule RBs in the secondary cell for the terminal to transmit data.
  • an embodiment of the present invention provides a base station, where the base station includes a processor, a memory, and a transceiver, where the processor invokes a program in the memory to perform the following operations:
  • the base station After performing the above operation, after the base station compresses the standard bandwidth of the secondary cell to obtain the compressed bandwidth, the base station does not transmit the resource indication message through the PDCCH of the secondary cell, but schedules the secondary cell for the terminal by using the primary cell in a cross-carrier scheduling manner.
  • the RB in the compressed bandwidth avoids using the PDCCH of the compressed RB, and the RB resource cannot be smoothly scheduled.
  • the resource indication message is further used to indicate a cell measurement reference signal CRS of the RB that is lost in the process of compressing the standard bandwidth, where the terminal A channel estimation is performed for using a CRS other than the CRS of the lost RB in the standard bandwidth.
  • an embodiment of the present invention provides a terminal, where the terminal includes a functional unit for performing some or all of the steps of any implementation of the first aspect.
  • an embodiment of the present invention provides a base station, where the terminal includes a functional unit for performing some or all of the steps of any implementation of the second aspect.
  • an embodiment of the present invention provides a system chip (for example, a SOC (System-on-a-Chip) chip, where the system chip includes at least one processor and a memory, and the processor and the memory can pass through a bus. Connected, the processor can invoke a program in the memory to perform the method described in any of the implementations of the first aspect.
  • a system chip for example, a SOC (System-on-a-Chip) chip
  • the system chip includes at least one processor and a memory, and the processor and the memory can pass through a bus.
  • the processor can invoke a program in the memory to perform the method described in any of the implementations of the first aspect.
  • an embodiment of the present invention provides a system chip (for example, a SOC chip), where the system chip includes at least one processor, a memory, and a communication interface, and the processor and the memory are connected by a bus, and the processor can be invoked.
  • a program in the memory to perform the method described in any of the implementations of the second aspect.
  • the present invention provides a computer readable storage medium storing one or more computer programs, the electronic device executing the above by running the one or more computer programs A channel estimation method on the one hand.
  • the present invention provides a computer readable storage medium storing one or more computer programs, the electronic device executing the above by running the one or more computer programs Two aspects of resource scheduling methods.
  • an embodiment of the present invention provides a communication system, where the communication system includes a terminal and a base station, where the terminal is the terminal described in the third aspect or the fifth aspect; the base station is the fourth aspect or the sixth aspect. The base station described.
  • the embodiment of the present invention provides a communication system, where the communication system includes a terminal and a base station, where the terminal is the terminal described in the third aspect or the fifth aspect; the base station is configured to schedule the terminal.
  • the embodiment of the present invention provides a communication system, where the communication system includes a terminal and a base station, where the base station is the base station described in the fourth aspect or the sixth aspect, and the terminal is scheduled by the base station.
  • the terminal determines whether there is a damaged CRS in the target RB, and if yes, uses the CRS except the damaged CRS in the target RB to perform channel estimation, thereby avoiding that the standard bandwidth is compressed. A large error occurs in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • FIG. 1 is a schematic diagram of a scenario in which a standard bandwidth is compressed in the prior art
  • FIG. 2 is a schematic diagram of a scenario in which an RB includes a CRS in the prior art
  • FIG. 3 is a schematic flowchart of a channel estimation method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a scenario for selecting a CRS for channel estimation according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of another scenario of selecting a CRS for channel estimation according to an embodiment of the present disclosure
  • FIG. 6 is a schematic diagram of a scenario for compressing a standard bandwidth of a secondary cell according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart diagram of a resource scheduling method according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another terminal according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of a communication system according to an embodiment of the present invention.
  • the terminal described in the embodiment of the present invention may be a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a mobile internet device (English: mobile internet device, referred to as MID), a wearable device (such as a smart watch (such as iWatch, etc.), and a smart device.
  • a terminal device that can communicate with a base station such as a wristband, a pedometer, or the like.
  • the base station described in the present invention may be an evolved base station (English: Evolved Node B, eNB for short) in the LTE, and the transmission/reception point (TRP) in the NR can perform the above terminal. Scheduled device.
  • FIG. 3 is a schematic flowchart diagram of a channel estimation method according to an embodiment of the present invention, where the method includes but is not limited to the following steps:
  • Step S301 The base station compresses the standard bandwidth.
  • the base station can compress a standard bandwidth of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, etc. to obtain a compressed bandwidth, and the process of processing the standard bandwidth to reduce the width of the standard bandwidth is to compress the The process of standard bandwidth.
  • compressing a standard bandwidth of 10 MHz results in a compressed bandwidth of 9 MHz, which can be used for data transmission like the standard bandwidth.
  • the total number of resource blocks RBs available for data transmission in the standard bandwidth before compression is greater than the total number of resource blocks RB available for data transmission in the compressed standard bandwidth, that is, the standard bandwidth is compressed. A part of the RBs will be lost. For example, there are a total of 6 RBs in the standard bandwidth.
  • the standard bandwidth is compressed and has 5 RBs.
  • the 6 RBs in the standard bandwidth are RB1, RB2, RB3, RB4, RB5, and RB6.
  • the five RBs after the standard bandwidth is compressed are RB1, RB2, RB3, RB4, and RB5, respectively, wherein the five RBs have the same one-to-one correspondence with the first five RBs of the six RBs.
  • Step S302 If there is a damaged CRS in the plurality of cell measurement reference signals CRS in the target resource block RB, the terminal uses the undamaged CRS in the multiple CRSs for channel estimation, and does not use the multiple The CRS in the CRS is used for channel estimation.
  • the target RB is in the standard bandwidth that may be used when the terminal performs channel estimation. RB, so the terminal needs to determine whether the CRS in the target RB is damaged; for example, the standard bandwidth includes RB1, RB2, RB3, RB4, RB5, and RB6, and the target RB is RB5, RB6, if the base station compresses the When the RB6 is compressed in the standard bandwidth, the CRS of the RB6 of the target RB is damaged, and the CRS of the RB5 of the plurality of CRSs of the target RB is not damaged.
  • the standard bandwidth includes RB1, RB2, RB3, RB4, RB5, and RB6, and the target RB is RB5, RB6, if the base station compresses the When the RB6 is compressed in the standard bandwidth, the CRS of the RB6 of the target RB is damaged, and the CRS of the RB5 of the plurality of CRSs of the target RB is not damaged.
  • How to determine whether there are damaged CRSs in multiple cell measurement reference signals CRS in the target resource block RB includes but is not limited to the following cases:
  • the terminal receives the CRS damage indication information sent by the base station, where the CRS impairment indication information indicates that the base station compresses the CRS caused by the standard bandwidth compression; the terminal further determines the target RB according to the CRS damage indication information.
  • the multiple CRSs is the damaged CRS.
  • the base station informs the CRS of the RBs of the standard bandwidth by using the CRS impairment indication information, and the terminal determines whether the CRSs of the target RB are damaged, and whether the CRS of the target RB is included in the CRS.
  • the damaged CRS indicated by the loss indication information indicates that there is a damaged CRS among the plurality of CRSs in the target RB, and if not, it indicates that there is no damaged CRS among the plurality of CRSs in the target RB.
  • the terminal divides the target RB into multiple groups. For example, if the target RB includes RB1, RB2, RB3, and RB4, the RB1 and the RB2 may be divided into one group, and the RB3 and the RB4 are divided into one group. 2 groups; or RB1, RB2, RB3, RB4 are each 1 group, a total of 4 groups; the plurality of groups includes the first group and the second group. Channel estimation is then performed separately for the CRSs in each of the plurality of groups, and the first group is considered if the channel quality estimated by the CRS of the first group is lower than the channel quality preset threshold estimated by the CRS of the second group.
  • RB is a compressed RB, and the CRS in the first group is damaged; and the CRS in the second group is considered to be intact. That is to say, when the channel quality estimated by a certain group of CRSs is smaller than the channel quality estimated by other groups of CRSs, and the smaller amount exceeds a preset preset threshold value, the CRS of the certain group is considered to be subjected to Loss of CRS.
  • a plurality of RBs may be selected from the RBs other than the RBs in which the damaged CRS is located in the target RB according to a preset rule, where the multiple RBs include scheduled RBs.
  • the RB of the terminal transmitting data determines the CRS in the plurality of RBs as an undamaged CRS, and then uses the undamaged CRS for channel estimation.
  • the RB damage indication information It indicates that the CRS in RB1 in FIG. 4 is damaged, and the scheduled RB includes RB3 and RB4, and RB3, RB4, and RB1 belong to the same standard bandwidth, so the CRS in RB2, RB3, RB4, and RB5 can be determined to be unacceptable.
  • the lossy CRS is used for channel estimation.
  • the second set of CRSs can be used as the undamaged CRS.
  • the terminal may determine the CRS in the scheduled RB as an undamaged CRS. Since the base station does not allocate the compressed RB to the terminal, if the base station allocates an RB to the terminal, it indicates that the certain RB is not compressed, so the CRS in the certain RB can be determined to be undamaged. The CRS is then used for channel estimation using the undamaged CRS. For example, as shown in FIG. 5, if RB3 and RB4 are RBs currently scheduled to the terminal, the CRSs in RB3 and RB4 may be regarded as undamaged CRSs.
  • steps S304 and S305 may be performed before step S301, and the detailed descriptions of steps S304 and S305 are as follows:
  • Step S303 The base station sends a resource indication message to the terminal in a cross-carrier scheduling manner by using a physical downlink control channel (English: Physical Downlink Control Channel, PDCCH for short) of the primary cell.
  • a physical downlink control channel English: Physical Downlink Control Channel, PDCCH for short
  • the base station uses the joint scheduling mode of the primary cell and the secondary cell to perform data transmission, where the compressed standard bandwidth is the bandwidth in the secondary cell instead of the bandwidth in the primary cell, that is, the base station is The standard bandwidth of the primary cell is not compressed. As shown in FIG. 6, the primary cell does not have a compressed RB, and the secondary cell has a compressed RB.
  • Step S304 The terminal receives the resource indication message sent by the base station by means of the PDCCH of the primary cell in a cross-carrier scheduling manner.
  • the base station when the base station compresses the standard bandwidth of the secondary cell, the PDCCH may be damaged. Therefore, the base station does not send the resource indication message through the PDCCH of the secondary cell, but uses the cross-carrier joint scheduling manner to pass the The PDCCH of the primary cell sends the resource indication message.
  • the resource indication message is used to indicate which RBs of the secondary cell the terminal transmits data.
  • the terminal determines whether there is a damaged CRS in the target RB, and if so, uses the CRS other than the damaged CRS in the target RB for channel estimation, thereby avoiding compression due to standard bandwidth. As a result, a large error occurs in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • FIG. 7 is a schematic flowchart diagram of a resource scheduling method according to an embodiment of the present invention, where the method includes but is not limited to the following steps:
  • Step S701 The base station compresses the standard bandwidth of the secondary cell to obtain a compressed bandwidth.
  • the base station uses the joint scheduling mode of the primary cell and the secondary cell to perform data transmission, where the compressed standard bandwidth is the bandwidth in the secondary cell instead of the bandwidth in the primary cell, that is, the base station is The standard bandwidth of the primary cell is not compressed. As shown in FIG. 6, the primary cell does not have a compressed RB, and the secondary cell has a compressed RB.
  • the base station can compress a standard bandwidth of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz to obtain a compressed compression bandwidth. For example, compressing a standard bandwidth of 10 MHz to obtain a compressed bandwidth of 9 MHz, the compressed bandwidth can be It is used for data transmission like standard bandwidth.
  • the total number of resource blocks RBs available for data transmission in the standard bandwidth before compression is greater than the total number of resource blocks RBs that can be used for data transmission after the standard bandwidth is compressed, that is, the standard bandwidth is compressed. Loss a part of the RB. For example, there are a total of 6 RBs in the standard bandwidth. After the standard bandwidth is compressed, there are 5 RBs.
  • the 6 RBs in the standard bandwidth are RB1, RB2, RB3, RB4, RB5, and RB6, respectively.
  • the five RBs after the standard bandwidth is compressed are RB1, RB2, RB3, RB4, and RB5, respectively, wherein the five RBs have the same correspondence with the five RBs of the six RBs.
  • Step S702 The base station sends a resource indication message to the terminal in a cross-carrier scheduling manner by using the physical downlink control channel PDCCH of the primary cell, instructing the terminal to use the resource block RB in the compressed bandwidth to transmit data.
  • the base station when the base station compresses the standard bandwidth of the secondary cell, the PDCCH may be damaged. Therefore, the base station does not send the resource indication message through the PDCCH of the secondary cell, but uses the cross-carrier joint scheduling manner to pass the The PDCCH of the primary cell sends the resource indication message.
  • the resource The indication message is used to indicate which RBs of the secondary cell the terminal transmits data.
  • Step S703 The terminal receives the resource indication message sent by the base station, and parses out the RB resource scheduled for itself from the resource indication message.
  • an RB resource that can be called to be allocated to the terminal is a scheduled RB.
  • the terminal needs to perform channel estimation through the undamaged CRS when transmitting data using the scheduled RB.
  • the terminal needs to confirm which CRBs of the RBs in the standard bandwidth are not damaged, and confirms the undamaged CRS, and then performs channel estimation based on the CRS.
  • CRS channel estimation
  • the base station after the base station compresses the standard bandwidth of the secondary cell to obtain the compressed bandwidth, the base station does not send the resource indication message through the PDCCH of the secondary cell, but uses the method of the cross-carrier scheduling of the primary cell as the terminal.
  • the scheduling of the RBs in the compressed bandwidth of the secondary cell avoids the use of the PDCCH of the compressed RB, and the RB resources cannot be smoothly scheduled.
  • FIG. 8 is a terminal 80 according to an embodiment of the present invention.
  • the terminal 80 includes a processor 801 (the number of processors 801 may be one or more, and one processor in FIG. 8 is taken as an example).
  • the memory 802 and the transceiver 803 (which may include a radio frequency module, an antenna, etc.), in some embodiments of the present invention, the processor 801, the memory 802, and the transceiver 803 may be connected by a bus or other means, in FIG. Connection is an example.
  • the memory 80802 is configured to store a program
  • the processor 801 calls a program in the memory 802 to perform the following operations:
  • the target RB is an RB in a compressed standard bandwidth
  • Channel estimation is performed by the transceiver 803 using the undamaged CRS of the plurality of CRSs, and the CRSs in the plurality of CRSs are not used for channel estimation.
  • the terminal 80 determines whether there is a damaged CRS in the target RB, and if so, uses the CRS other than the damaged CRS in the target RB for channel estimation, thereby avoiding the cause.
  • the standard bandwidth is compressed resulting in a large error in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • the multiple cell in the target resource block RB measures the presence of a damaged CRS in the reference signal CRS, specifically:
  • the multiple cell in the target resource block RB measures the presence of a damaged CRS in the reference signal CRS, specifically:
  • the CRS of the first group is damaged when a channel quality estimated by a CRS of the first group of the plurality of groups is lower than a channel quality preset threshold estimated by a CRS of the second group of the plurality of groups
  • the second set of CRSs is intact, and the first set and the second set are any two of the plurality of sets.
  • the multiple cell in the target resource block RB measures the presence of a damaged CRS in the reference signal CRS, specifically:
  • the transceiver 803 uses the transceiver 803 to perform channel estimation by using multiple CRSs of the target RB, if it is estimated that the channel quality is lower than the preset threshold, it indicates that there is a damaged CRS in the multiple CRSs, and the terminal is currently allocated in the RB.
  • the CRS is an undamaged CRS.
  • the standard bandwidth is a bandwidth of the secondary cell.
  • the standard bandwidth of the secondary cell is compressed without compressing the bandwidth of the primary cell, thereby avoiding the impact of the compressed bandwidth on the primary cell.
  • the processor 801 performs channel estimation by using the undamaged CRS of the multiple CRSs by using the transceiver 803, without using the damaged CRS in the multiple CRSs.
  • the terminal transmits data.
  • terminal 80 shown in FIG. 8 may also correspond to the implementation of the method embodiment shown in FIG. 3.
  • the terminal 80 determines whether there is a damaged CRS in the target RB, and if so, uses the CRS other than the damaged CRS in the target RB for channel estimation, thereby avoiding the standard bandwidth.
  • the compression results in a large error in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • FIG. 9 is a base station 90 according to an embodiment of the present invention.
  • the base station 90 includes a processor 901 (the number of processors 901 may be one or more, and one processor in FIG. 9 is taken as an example).
  • the memory 902 and the transceiver 903 (which may include a radio frequency module, an antenna, etc.), in some embodiments of the present invention, the processor 901, the memory 902, and the transceiver 903 may be connected by a bus or other means, in FIG. Connection is an example.
  • the memory 902 is configured to store a program
  • the processor 901 calls a program in the memory 902 to perform the following operations:
  • the resource indication message is further used to indicate a cell measurement reference signal CRS of the RB lost in the process of compressing the standard bandwidth, where the terminal is used to use the standard bandwidth.
  • the CRS other than the CRS of the lost RB is used for channel estimation.
  • the base station 90 After the base station 90 compresses the standard bandwidth of the secondary cell to obtain a compressed bandwidth, the base station does not transmit the resource indication message through the PDCCH of the secondary cell, but uses the primary cell to perform cross-carrier scheduling.
  • the RB in the compressed bandwidth of the secondary cell is scheduled for the terminal, and the PDCCH using the compressed RB is avoided, so that the RB resource cannot be smoothly scheduled.
  • FIG. 10 is a schematic structural diagram of still another terminal 100 according to an embodiment of the present invention.
  • the terminal 100 includes an estimating unit 1001, and a detailed description of the estimating unit 1001 is as follows.
  • the estimating unit 1001 is configured to: when there is a damaged CRS in the plurality of cell measurement reference signals CRS in the target resource block RB, the target RB is an RB in the compressed standard bandwidth;
  • Channel estimation is performed using undamaged CRSs in multiple CRSs, and corrupted CRSs in the multiple CRSs are not used for channel estimation.
  • the terminal 100 determines whether there is a damaged CRS in the target RB, and if so, uses the CRS of the target RB except the damaged CRS for channel estimation, thereby avoiding the channel caused by the standard bandwidth being compressed.
  • the estimation result shows a large error, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • the terminal 100 further includes a receiving unit and a confirming unit, where:
  • the receiving unit is configured to receive CRS impairment indication information sent by the base station, where the CRS impairment indication information indicates that the base station compresses the standard bandwidth to cause a damaged CRS;
  • the confirming unit is configured to learn, according to the CRS damage indication information, whether a damaged CRS exists in multiple CRSs in the target RB.
  • the terminal 100 further includes a dividing unit and a determining unit, wherein a detailed description of each unit is as follows:
  • a dividing unit configured to divide the target RB into multiple groups, each group including at least one RB;
  • the estimating unit 1001 is further configured to perform channel estimation by using CRSs of each of the multiple groups;
  • a determining unit configured to determine the first group when a channel quality estimated by a CRS of the first group of the plurality of groups is lower than a channel quality preset threshold estimated by a CRS of the second group of the plurality of groups The CRS is impaired and the second set of CRS is intact, the first set and the second set being any two of the multiple sets.
  • the estimating unit 1001 is further configured to perform channel estimation by using multiple CRSs of the target RB, and if the estimated channel quality is lower than a preset threshold, indicating that the multiple CRSs are damaged.
  • CRS the CRS in the RB currently allocated by the terminal is an undamaged CRS.
  • the standard bandwidth is a bandwidth of the secondary cell.
  • the standard bandwidth of the secondary cell is performed. Compression does not compress the bandwidth of the primary cell, thereby avoiding the impact of the compressed bandwidth on the primary cell.
  • the receiving unit is further configured to receive a resource indication message that is sent by the base station by using a physical downlink control channel PDCCH of the primary cell in a cross-carrier scheduling manner, where the resource indication message is used to schedule the The RBs in the secondary cell are used by the terminal to transmit data.
  • the terminal 100 determines whether there is a damaged CRS in the target RB, and if so, uses the CRS other than the damaged CRS in the target RB for channel estimation, thereby avoiding the standard bandwidth.
  • the compression results in a large error in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • FIG. 11 is a base station 110 according to an embodiment of the present invention.
  • the base station 110 includes a compression unit 1101 and a sending unit 1102. The detailed description of each unit is as follows.
  • the compression unit 1101 is configured to compress a standard bandwidth of the secondary cell to obtain a compressed bandwidth.
  • the sending unit 1102 is configured to send a resource indication message to the terminal in a cross-carrier scheduling manner by using a physical downlink control channel PDCCH of the primary cell, and instruct the terminal to use the resource block RB in the compressed bandwidth to transmit data.
  • the resource indication message is further used to indicate a cell measurement reference signal CRS of the RB lost in the process of compressing the standard bandwidth, where the terminal is used to use the standard bandwidth.
  • the CRS other than the CRS of the lost RB is used for channel estimation.
  • the base station 110 after the base station compresses the standard bandwidth of the secondary cell to obtain a compressed bandwidth, the base station does not transmit the resource indication message through the PDCCH of the secondary cell, but The terminal schedules the RB in the compressed bandwidth of the secondary cell, and avoids using the PDCCH of the compressed RB, so that the RB resource cannot be smoothly scheduled.
  • FIG. 12 is a schematic structural diagram of a communication system 120 according to an embodiment of the present invention.
  • the communication system 120 includes a terminal 1201 that is the terminal 80 shown in FIG. 8 or the terminal 100 shown in FIG. 10, and the base station 1202 is the base station 90 shown in FIG. 9 or shown in FIG. Base station 110.
  • the embodiment of the present invention provides a communication system, where the communication system includes a base station, which is a base station 90 shown in FIG. 9 or a base station 110 shown in FIG. 11, and is used for scheduling other terminal devices.
  • a base station which is a base station 90 shown in FIG. 9 or a base station 110 shown in FIG. 11, and is used for scheduling other terminal devices.
  • the embodiment of the present invention provides a communication system, where the communication system includes a terminal, and the terminal is the terminal 80 shown in FIG. 8 or the terminal 100 shown in FIG. 10, and the terminal is used for data transmission under scheduling of the base station. .
  • an embodiment of the present invention provides a system chip (for example, a SOC (System-on-a-Chip) chip, where the system chip includes at least one processor and a memory, and the processor and the memory can be connected through a bus.
  • the processor is operative to perform the operations performed by the processor 801 shown in FIG.
  • an embodiment of the present invention provides a system chip (for example, a SOC chip), where the system chip includes at least one processor, a memory, and a communication interface, and the processor and the memory are connected by a bus, and the processor is configured to execute a map.
  • a system chip for example, a SOC chip
  • the system chip includes at least one processor, a memory, and a communication interface, and the processor and the memory are connected by a bus, and the processor is configured to execute a map. The operation performed by the processor 901 shown in FIG.
  • the terminal determines whether there is a damaged CRS in the target RB, and if so, uses the CRS except the damaged CRS in the target RB to perform channel estimation, thereby avoiding the standard.
  • the bandwidth is compressed resulting in a large error in the channel estimation result, thereby reducing the deviation of the data demodulation service based on the channel estimation result.
  • the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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Abstract

本发明实施例公开一种信道估计方法、相关设备及系统，该方法包括：在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。采用本发明实施例，能够提高信道估计的准确度，解决了基于该信道估计结果进行的数据解调业务的解调结果误差较大的问题。

Description

一种信道估计方法、相关设备及系统 技术领域
本发明涉及通信技术领域，尤其涉及一种信道估计方法、相关设备及系统。
背景技术
长期演进(英文：Long Term Evolution，简称：LTE)网络支持1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz这6种标准带宽。由于全球移动通信系统(英文：Global System for Mobile Communication，简称：GSM)/通用移动通信系统(英文：Universal Mobile Telecommunications System，简称：UMTS)/码分多址接入(英文：Code Division Multiple Access，简称：CDMA)网络无法承载智能终端对大量语音和数据业务需求，因此智能终端正在迅速向LTE网络的迁移，导致GSM/UMTS/CDMA网络负荷将逐渐减轻而LTE网络负荷将逐渐加重，为了合理配置资源，运营商正在尝试将原来用于GSM/UMTS/CDMA网络的频谱释放出来，供LTE网络使用，以提升频谱效率和数据吞吐量。GSM/UMTS/CDMA的带宽不是LTE网络的标准带宽，因此非标准带宽的使用将成为LTE的重要应用场景。
在某些非标准带宽的应用场景下，TLE网络中需要将上述标准带宽压缩为非标准带宽来使用，导致该标准带宽中的某些资源块(英文：Resource Block，简称：RB)被压缩掉，如图1所示，标准带宽被压缩之前包含RB1、RB2、RB3、……RB(n-1)、RBn，压缩后的带宽包括RB2、RB3、……RB(n-1)、RBn；RB的结构如图2所示，频域上每隔六个子载波就有一个CRS，时域上每隔三个符号位就有一个CRS，如果压缩掉了某些RB则该某些RB中的CRS会受损。现有技术中的信道估计机制为：基站为该终端调度RB，终端从被调度RB(当前调度给自身的RB)所属的标准带宽中选择其他RB，然后使用该被调度RB中的CRS和该其他RB中的CRS做信道估计。
现有技术的缺陷在于，如果基站将标准带宽经压缩后得到的非标准带宽中 的RB(可以称为“压缩RB”)调度给终端，终端会判断出该压缩RB落入该标准带宽的范围，然后从该标准带宽中选择其他RB，再根据该压缩RB中的CRS和该其他RB中的CRS做信道估计，如果从该标准带宽中选择的其他RB为被压缩掉的RB则会导致该终端的信道估计结果不准确，从而导致基于该信道估计结果进行的数据解调业务的解调结果误差较大。
发明内容
本发明实施例公开了一种信道估计方法、相关设备及系统，能够提高信道估计的准确率，解决了基于该信道估计结果进行的数据解调业务的解调结果误差较大的问题。
本发明实施例第一方面公开了一种信道估计方法，该方法包括：
在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。可选的，对标准带宽进行处理而导致该标准带宽的宽度变小的过程即是压缩该标准带宽的过程。
通过执行上述步骤，终端判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
结合第一方面，在第一方面的第一种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
根据所述CRS受损指示信息获知目标RB内的多个CRS中是否存在受损的CRS。
结合第一方面，在第一方面的第二种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
将目标RB划分成多组，每组包含至少一个RB；
通过所述多组中每组的CRS分别做信道估计；
当通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
结合第一方面，在第一方面的第三种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
结合第一方面，或者第一方面的第一种可能的实现方式，或者第一方面的第二种可能的实现方式，或者第一方面的第三种可能的实现方式，在第一方面的第四种可能的实现方式中，所述标准带宽为辅小区的带宽。
也即是说，由于主小区比辅小区更重要，因此对该辅小区的标准带宽进行压缩而不对该主小区的带宽进行压缩，避免了压缩带宽对主小区的的影响。
结合第一方面的第四种可能的实现方式，在第一方面的第五种可能的实现方式中，所述终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计之前，还包括：
所述终端接收基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
第二方面，本发明实施例提供一种资源调度方法，该方法包括：
基站对辅小区的标准带宽进行压缩，得到压缩带宽；
所述基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块RB传输数据。
通过执行上述步骤，当基站对辅小区的标准带宽进行了压缩得到压缩带宽后，不通过该辅小区的PDCCH发送资源指示消息，而是通过主小区以跨载波调度的方式为终端调度该辅小区的该压缩带宽中的RB，避免了使用被压缩的RB的PDCCH而导致无法顺利调度RB资源。
结合第二方面，在第二方面的第一种可能的实现方式中，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
第三方面，本发明实施例提供一种终端，所述终端包括处理器、存储器和收发器，所述处理器调用所述存储器中的程序，用于执行如下操作：
在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
通过所述收发器使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。
通过执行上述操作，终端判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
结合第三方面，在第三方面的第一种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
通过所述收发器接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
根据所述CRS受损指示信息获知目标RB内的多个CRS中是否存在受损的CRS。
结合第三方面，在第三方面的第二种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
将目标RB划分成多组，每组包含至少一个RB；
通过所述收发器通过所述多组中每组的CRS分别做信道估计；
当通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
结合第三方面，在第三方面的第三种可能的实现方式中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
通过所述收发器使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
结合第二方面，或者第二方面的第一种可能的实现方式，或者第二方面的第二种可能的实现方式，或者第二方面的第三种可能的实现方式，在第二方面的第四种可能的实现方式中，所述标准带宽为辅小区的带宽。
也即是说，由于主小区比辅小区更重要，因此对该辅小区的标准带宽进行压缩而不对该主小区的带宽进行压缩，避免了压缩带宽对主小区的的影响。
结合第二方面的第四种可能的实现方式，在第二方面的第五种可能的实现方式中，所述处理器通过所述收发器使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计之前，还用于通过所述收发器通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
第四方面，本本发明实施例提供一种基站，所述基站包括处理器、存储器和收发器，所述处理器调用所述存储器中的程序，用于执行如下操作：
对辅小区的标准带宽进行压缩，得到压缩带宽；
通过所述收发器通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块 RB传输数据。
通过执行上述操作，当基站对辅小区的标准带宽进行了压缩得到压缩带宽后，不通过该辅小区的PDCCH发送资源指示消息，而是通过主小区以跨载波调度的方式为终端调度该辅小区的该压缩带宽中的RB，避免了使用被压缩的RB的PDCCH而导致无法顺利调度RB资源。
结合第四方面，在第四方面的的一种可能的实现方式中，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
第五方面，本发明实施例提供一种终端，所述终端包含用于执行第一方面任一实现方式的部分或全部步骤的功能单元。
第六方面，本发明实施例提供一种基站，所述终端包含用于执行第二方面任一实现方式的部分或全部步骤的功能单元。
第七方面，本发明实施例提供一种系统芯片(例如，SOC(System-on-a-Chip)芯片)，该系统芯片包括至少一个处理器和存储器存储器，该处理器与该存储器可以通过总线相连，该处理器可以调用该存储器中的程序来执行第一方面任一实现方式所描述的方法。
第八方面，本发明实施例提供一种系统芯片(例如，SOC芯片)，该系统芯片包括至少一个处理器、存储器和通信接口，该处理器与该存储器可以通过总线相连，该处理器可以调用该存储器中的程序来执行第二方面任一实现方式所描述的方法。
第九方面，本发明提供了一种计算机可读存储介质，所述计算机可读存储介质存储有一个或多个计算机程序，所述电子设备通过运行所述一个或多个计算机程序来执行上述第一方面的信道估计方法。
第十方面，本发明提供了一种计算机可读存储介质，所述计算机可读存储介质存储有一个或多个计算机程序，所述电子设备通过运行所述一个或多个计算机程序来执行上述第二方面的资源调度方法。
第十一方面，本发明实施例提供一种通信系统，该通信系统包括终端和基站，所述终端为第三方面或者第五方面所描述的终端；所述基站为第四方面或者第六方面所描述的基站。
第十二方面，本发明实施例提供一种通信系统，该通信系统包括终端和基站，所述终端为第三方面或者第五方面所描述的终端；该基站用于对该终端进行调度。
第十三方面，本发明实施例提供一种通信系统，该通信系统包括终端和基站，所述基站为第四方面或者第六方面所描述的基站，该终端受该基站的调度。
通过实施本发明实施例，终端判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍。
图1为现有技术中的一种标准带宽被压缩的场景示意图；
图2为现有技术中的一种RB包含CRS的场景示意图；
图3为本发明实施例公开的一种信道估计方法的流程示意图；
图4为本发明实施例公开的一种选择做信道估计的CRS的场景示意图；
图5为本发明实施例公开的又一种选择做信道估计的CRS的场景示意图；
图6为本发明实施例公开的一种压缩辅小区的标准带宽的场景示意图；
图7为本发明实施例公开的一种资源调度方法的流程示意图；
图8为本发明实施例公开的一种终端的结构示意图；
图9为本发明实施例公开的一种基站的结构示意图；
图10为本发明实施例公开的又一种终端的结构示意图；
图11为本发明实施例公开的又一种基站的结构示意图；
图12为本发明实施例公开的一种通信系统的结构示意图。
具体实施方式
下面将结合附图对本发明实施例中的技术方案进行清楚、完整地描述。
本发明实施例所描述的终端可以是手机、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(英文：mobile internet device，简称：MID)、可穿戴设备(例如智能手表(如iWatch等)、智能手环、计步器等)等可以与基站进行通信的终端设备。本发明所描述的基站可以为LTE中的演进型基站(英文：Evolved Node B，简称：eNB)，NR中的发送接收点(英文：Transmission/Reception Point，简称：TRP)等能够对上述终端进行调度的设备。
请参见图3，图3是本发明实施例提供的一种信道估计方法的流程示意图，该方法包括但不限于如下步骤：
步骤S301：基站对标准带宽进行压缩。
具体地，该基站可以对1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz等标准带宽进行压缩得到被压缩的带宽，对标准带宽进行处理而导致该标准带宽的宽度变小的过程即是压缩该标准带宽的过程。例如，对10MHz的标准带宽进行压缩得到被压缩的带宽9MHz，该被压缩的带宽可以像标准带宽一样被用作数据传输。被压缩前的标准带宽中可用于数据传输的资源块RB的总数量，比被压缩后的标准带宽中可用于数据传输的资源块RB的总数量要多，也即是说，标准带宽被压缩后会损失一部分的RB，例如，该标准带宽内总共有6个RB，该标准带宽被压缩后共有5个RB，标准带宽内的6个RB分别为RB1、RB2、RB3、RB4、RB5和RB6，该标准带宽被压缩后的5个RB分别为RB1、RB2、RB3、RB4和RB5，其中，该5个RB与该6个RB中的前5个RB一一对应相同。
步骤S302：在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。
具体地，该目标RB为该终端进行信道估计时可能用到的该标准带宽中的 RB，因此该终端需要判断该目标RB中的CRS是否受损；举例来说，标准带宽中包含RB1、RB2、RB3、RB4、RB5和RB6，该目标RB为RB5、RB6，如果该基站压缩该标准带宽时压缩掉了该RB6，那么该目标RB的CRS中处于该RB6的CRS受损，该目标RB的多个CRS中处于该RB5的CRS未受损。
如何确定目标资源块RB内的多个小区测量参考信号CRS中是否存在受损的CRS包括但不限于如下几种情况：
情况一，该终端接收基站发送的CRS受损指示信息，该CRS受损指示信息指示了该基站对标准带宽压缩后导致受损的CRS；该终端进一步根据该CRS受损指示信息确定目标RB内的多个CRS中是在受损的CRS。
也即是说，该基站通过CRS受损指示信息告知该标准带宽中哪些RB的CRS受损，该终端获知该标识带宽中哪些CRS受损后，判断该目标RB的CRS中是否包含该CRS受损指示信息所指示的受损CRS，若包含则表明该目标RB内的多个CRS中存在受损的CRS，若不包含则表明该目标RB内的多个CRS中不存在受损的CRS。
情况二，该终端将该目标RB分成多组，例如，如果该目标RB包括RB1、RB2、RB3和RB4，那么可以将该RB1和RB2分为1组，将RB3和RB4分为1组，总共2组；或者将RB1、RB2、RB3、RB4各为1组，总共4组；该多组中包括第一组和第二组。然后用该多组中的每组中的CRS分别做信道估计，如果通过第一组的CRS估计的信道质量低于通过第二组的CRS估计的信道质量预设阈值，则认为该第一组RB为被压缩的RB，且该第一组中的CRS受损；且认为该第二组中的CRS未受损。也就是说，当通过某组的CRS估计出的信道质量小于通过其他组CRS估计出的信道质量，且小于的量超过预设设定的预设阈值时，则认为该某组的CRS为受损的CRS。
在上述情况一下，可以根据预设规则从该目标RB中除该受损CRS所在的RB外的RB中选择多个RB，该多个RB包括被调度RB(该被调度RB为当前调度给该终端传输数据的RB)，将该多个RB中的CRS确定为未受损的CRS，然后使用该未受损的CRS做信道估计。举例来说，该RB受损指示信息 指示了图4中的RB1中的CRS受损，而被调度RB包括RB3和RB4，RB3、RB4和RB1又属于同一标准带宽，因此可以将RB2、RB3、RB4和RB5中的CRS确定为未受损的CRS供信道估计。
在上述情况二下的一种可选的方案中，可以将该第二组的CRS作为未受损的CRS。
在上述情况二下的又一种可选的方案中，该终端可以将被调度RB中的CRS确定为未受损的CRS。由于基站不会将压缩掉的RB分配给该终端，如果基站将某个RB分配给该终端则表明该某个RB没有被压缩掉，因此可以将该某个RB中的CRS确定为未受损的CRS，然后使用该未受损的CRS做信道估计。举例来说，如图5所示，如果RB3和RB4为当前被调度给该终端的RB，那么可以将该RB3和RB4中的CRS作为未受损的CRS。
在一种可选的方案中，当步骤S301压缩了辅小区的标准带宽而未压缩主小区的标准带宽时，步骤S301之前还可以执行步骤S304和S305，步骤S304和S305的详细描述如下：
步骤S303：该基站通过主小区的物理下行控制信道(英文：Physical Downlink Control Channel，简称：PDCCH)以跨载波调度的方式向终端发送资源指示消息。
具体地，该基站采用的是主小区和辅小区联合调度的方式进行数据传输，该被压缩的标准带宽为该辅小区中的带宽而不是该主小区中的带宽，也即是说，该基站不对该主小区的标准带宽进行压缩。如图6所示，主小区不存在被压缩的RB，辅小区存在被压缩的RB。
步骤S304：该终端接收基站通过主小区的PDCCH以跨载波调度的方式发送的该资源指示消息。
具体地，该基站对该辅小区的标准带宽压缩时可能会导致部分PDCCH受损，因此该基站不通过该辅小区的PDCCH发送该资源指示消息，而是采用跨载波联合调度的方式来通过该主小区的PDCCH发送该资源指示消息。该资源指示消息用于指示该终端在该辅小区的哪些RB上传输数据。
在图3所示的方法中，终端判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
请参见图7，图7是本发明实施例提供的一种资源调度方法的流程示意图，该方法包括但不限于如下步骤：
步骤S701：基站对辅小区的标准带宽进行压缩，得到压缩带宽。
具体地，该基站采用的是主小区和辅小区联合调度的方式进行数据传输，该被压缩的标准带宽为该辅小区中的带宽而不是该主小区中的带宽，也即是说，该基站不对该主小区的标准带宽进行压缩。如图6所示，主小区不存在被压缩的RB，辅小区存在被压缩的RB。
该基站可以对1.4MHz、3MHz、5MHz、10MHz、15MHz、20MHz等标准带宽进行压缩得到被压缩的压缩带宽，例如，对10MHz的标准带宽进行压缩得到被压缩的带宽9MHz，该被压缩的带宽可以像标准带宽一样被用作数据传输。被压缩前的标准带宽中可用于数据传输的资源块RB的总数量，比标准带宽被压缩后可用于数据传输的资源块RB的总数量要多，也即是说，标准带宽被压缩后会损失一部分的RB，例如，该标准带宽内总共有6个RB，该标准带宽被压缩后共有5个RB，标准带宽内的6个RB分别为RB1、RB2、RB3、RB4、RB5和RB6，该标准带宽被压缩后的5个RB分别为RB1、RB2、RB3、RB4和RB5，其中，该5个RB与该6个RB中的5个RB一一对应相同。
步骤S702：该基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示该终端使用该压缩带宽中的资源块RB传输数据。
具体地，该基站对该辅小区的标准带宽压缩时可能会导致部分PDCCH受损，因此该基站不通过该辅小区的PDCCH发送该资源指示消息，而是采用跨载波联合调度的方式来通过该主小区的PDCCH发送该资源指示消息。该资源 指示消息用于指示该终端在该辅小区的哪些RB上传输数据。
步骤S703：该终端接收该基站发送的该资源指示消息，从该资源指示消息中解析出被调度给自身的RB资源。
具体地，为了方便描述可称被调度给该终端的RB资源为被调度RB。该终端在使用该被调度RB传输数据时需要通过未受损的CRS做信道估计。
在一种可选的方案中，该终端需要确认该标准带宽中哪些RB的CRS未受损，确认了未受损的CRS后再基于该CRS做信道估计。具体过程可以参照图3所示实施例中的步骤S301～S303，此处不再赘述。
在图7所示的方法中，当基站对辅小区的标准带宽进行了压缩得到压缩带宽后，不通过该辅小区的PDCCH发送资源指示消息，而是通过主小区以跨载波调度的方式为终端调度该辅小区的该压缩带宽中的RB，避免了使用被压缩的RB的PDCCH而导致无法顺利调度RB资源。
上述详细阐述了本发明实施例的方法，为了便于更好地实施本发明实施例的上述方案，相应地，下面提供了本发明实施例的装置。
请参见图8，图8是本发明实施例提供的一种终端80，所述终端80为包括处理器801(处理器801的数量可以一个或多个，图8中以一个处理器为例)、存储器802和收发器803(可以包括射频模块、天线等)，在本发明的一些实施例中，处理器801、存储器802和收发器803可通过总线或者其它方式连接，图8中以通过总线连接为例。
所述存储器80802用于存储程序；
所述处理器801调用所述存储器802中的程序，用于执行如下操作：
在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
通过所述收发器803使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。
通过执行上述操作，终端80判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因 标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
在一种可选的方案中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
通过所述收发器803接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
根据所述CRS受损指示信息获知目标RB内的多个CRS中是否存在受损的CRS。
在又一种可选的方案中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
将目标RB划分成多组，每组包含至少一个RB；
通过所述收发器803通过所述多组中每组的CRS分别做信道估计；
当通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
在又一种可选的方案中，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
通过所述收发器803使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
在又一种可选的方案中，所述标准带宽为辅小区的带宽。
也即是说，由于主小区比辅小区更重要，因此对该辅小区的标准带宽进行压缩而不对该主小区的带宽进行压缩，避免了压缩带宽对主小区的的影响。
在又一种可选的方案中，所述处理器801通过所述收发器803使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计之前，还用于通过所述收发器通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
需要说明的是，图8所示的终端80的具体实现还可以对应参照图3所示的方法实施例的实现。
在图8所示的终端80中，终端80判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
请参见图9，图9是本发明实施例提供的一种基站90，所述基站90为包括处理器901(处理器901的数量可以一个或多个，图9中以一个处理器为例)、存储器902和收发器903(可以包括射频模块、天线等)，在本发明的一些实施例中，处理器901、存储器902和收发器903可通过总线或者其它方式连接，图9中以通过总线连接为例。
所述存储器902用于存储程序；
所述处理器901调用所述存储器902中的程序，用于执行如下操作：
对辅小区的标准带宽进行压缩，得到压缩带宽；
通过所述收发器903通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块RB传输数据。
在一种可选的方案中，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
需要说明的是，图9所示的基站90的具体实现可以对应参照图7所示方法实施例的实现。
在图9所示的基站90中，当基站90对辅小区的标准带宽进行了压缩得到压缩带宽后，不通过该辅小区的PDCCH发送资源指示消息，而是通过主小区以跨载波调度的方式为终端调度该辅小区的该压缩带宽中的RB，避免了使用被压缩的RB的PDCCH而导致无法顺利调度RB资源。
请参见图10，图10是本发明实施例提供的又一种终端100的结构示意图， 该终端100包括估计单元1001，估计单元1001的详细描述如下。
估计单元1001用于在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
使用多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。
通过运行上述单元，终端100判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
在一种可选的方案中，所述终端100还包括接收单元和确认单元，其中：
所述接收单元用于接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
所述确认单元用于根据所述CRS受损指示信息获知目标RB内的多个CRS中是否存在受损的CRS。
在又一种可选的方案中，所述终端100还包括划分单元和确定单元，其中，各个单元的详细描述如下：
划分单元，用于将目标RB划分成多组，每组包含至少一个RB；
估计单元1001还用于通过所述多组中每组的CRS分别做信道估计；
确定单元，用于在通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
在又一种可选的方案中，所述估计单元1001还用于使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
在又一种可选的方案中，所述标准带宽为辅小区的带宽。
也即是说，由于主小区比辅小区更重要，因此对该辅小区的标准带宽进行 压缩而不对该主小区的带宽进行压缩，避免了压缩带宽对主小区的的影响。
在又一种可选的方案中，所述接收单元还用于接收基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
需要说明的是，图10所示的终端100的具体实现还可以参照图3所示的方法实施例的实现。
在图10所示的终端100中，终端100判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
请参见图11，图11是本发明实施例提供的一种基站110，该基站110包括压缩单元1101和发送单元1102，其中，各个单元的详细描述如下。
压缩单元1101用于对辅小区的标准带宽进行压缩，得到压缩带宽；
发送单元1102用于通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块RB传输数据。
在一种可选的方案中，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
需要说明的是，图11所示的基站110的具体实现还可以对应参照图7所示的方法实施例的实现。
在图11所示的基站110中，当基站对辅小区的标准带宽进行了压缩得到压缩带宽后，不通过该辅小区的PDCCH发送资源指示消息，而是通过主小区以跨载波调度的方式为终端调度该辅小区的该压缩带宽中的RB，避免了使用被压缩的RB的PDCCH而导致无法顺利调度RB资源。
请参见图12，图12是本发明实施例提供的一种通信系统120的结构示意 图，该通信系统120包括终端1201和基站1202，其中，终端1201为图8所示的终端80或者图10所示的终端100，基站1202为图9所示的基站90或者图11所示的基站110。
进一步地，本发明实施例提供一种通信系统，该通信系统包括基站，该基站为图9所示的基站90或者图11所示的基站110，该基站用于对其它终端设备进行调度。
进一步地，本发明实施例提供一种通信系统，该通信系统包括终端，该终端为图8所示的终端80或者图10所示的终端100，该终端用于在基站的调度下进行数据传输。
进一步地，本发明实施例提供一种系统芯片(例如，SOC(System-on-a-Chip)芯片)，该系统芯片包括至少一个处理器和存储器存储器，该处理器与该存储器可以通过总线相连，该处理器用于执行图8所示的处理器801所执行的操作。
进一步地，本发明实施例提供一种系统芯片(例如，SOC芯片)，该系统芯片包括至少一个处理器、存储器和通信接口，该处理器与该存储器可以通过总线相连，该处理器用于执行图9所示的处理器901所执行的操作。
综上所述，通过实施本发明实施例，终端判断目标RB中是否存在受损的CRS，如果存在则使用该目标RB中除该受损的CRS之外的CRS做信道估计，避免了因标准带宽被压缩而导致信道估计结果出现较大误差，从而减小了基于该信道估计结果进行的数据解调业务的偏差。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。而前述的存储介质包括：ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
以上实施例仅揭露了本发明中较佳实施例，不能以此来限定本发明之权利范围，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流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (16)

  1. 一种信道估计方法，其特征在于，包括：
    在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
    终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计。
  2. 根据权利要求1所述的方法，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
    所述终端接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
    所述终端根据所述CRS受损指示信息获知目标RB内的多个CRS中受损的CRS。
  3. 根据权利要求1所述的方法，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
    所述终端将目标RB划分成多组，每组包含至少一个RB；
    所述终端通过所述多组中每组的CRS分别做信道估计；
    当通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
  4. 根据权利要求1所述的方法，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，包括：
    所述终端使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
  5. 根据权利要求1～4任一项所述的方法，其特征在于，所述标准带宽为辅小区的带宽。
  6. 根据权利要求5所述的方法，其特征在于，所述终端使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计之前，还包括：
    所述终端接收基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
  7. 一种资源调度方法，其特征在于，包括：
    基站对辅小区的标准带宽进行压缩，得到压缩带宽；
    所述基站通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块RB传输数据。
  8. 根据权利要求7所述的方法，其特征在于，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
  9. 一种终端，其特征在于，所述终端包括处理器、存储器和收发器，所述处理器调用所述存储器中的程序，用于执行如下操作：
    在目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况下，所述目标RB为被压缩的标准带宽中的RB；
    通过所述收发器使用所述多个CRS中未受损的CRS做信道估计，不使用 所述多个CRS中受损的CRS做信道估计。
  10. 根据权利要求9所述的终端，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
    通过所述收发器接收基站发送的CRS受损指示信息，所述CRS受损指示信息指示了所述基站对标准带宽压缩后导致受损的CRS；
    根据所述CRS受损指示信息获知目标RB内的多个CRS中是否存在受损的CRS。
  11. 根据权利要求9所述的终端，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
    将目标RB划分成多组，每组包含至少一个RB；
    通过所述收发器通过所述多组中每组的CRS分别做信道估计；
    当通过所述多组中的第一组的CRS估计的信道质量低于通过所述多组中第二组的CRS估计的信道质量预设阈值时，确定所述第一组的CRS受损且所述第二组的CRS未受损，所述第一组和所述第二组为所述多组中的任意两组。
  12. 根据权利要求9所述的终端，其特征在于，所述目标资源块RB内的多个小区测量参考信号CRS中存在受损的CRS的情况，具体为：
    通过所述收发器使用目标RB的多个CRS做信道估计，若估计出信道质量低于预设阈值则表明所述多个CRS中存在受损的CRS，所述终端当前被分配的RB中的CRS为未受损的CRS。
  13. 根据权利要求9～12任一项所述的终端，其特征在于，所述标准带宽为辅小区的带宽。
  14. 根据权利要求13所述的终端，其特征在于，所述处理器通过所述收 发器使用所述多个CRS中未受损的CRS做信道估计，不使用所述多个CRS中受损的CRS做信道估计之前，还用于通过所述收发器通过主小区的物理下行控制信道PDCCH以跨载波调度的方式发送的资源指示消息，所述资源指示消息用于调度所述辅小区中的RB供所述终端传输数据。
  15. 一种基站，其特征在于，所述基站包括处理器、存储器和收发器，所述处理器调用所述存储器中的程序，用于执行如下操作：
    对辅小区的标准带宽进行压缩，得到压缩带宽；
    通过所述收发器通过主小区的物理下行控制信道PDCCH以跨载波调度的方式向终端发送资源指示消息，指示所述终端使用所述压缩带宽中的资源块RB传输数据。
  16. 根据权利要求15所述的基站，其特征在于，所述资源指示消息还用于指示压缩所述标准带宽的过程中损失掉的RB的小区测量参考信号CRS，所述终端用于使用所述标准带宽中除所述损失掉的RB的CRS之外的CRS做信道估计。
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US10778474B2 (en) 2020-09-15
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