WO2015010269A1 - 一种信道检测方法、装置及终端 - Google Patents

一种信道检测方法、装置及终端 Download PDF

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Publication number
WO2015010269A1
WO2015010269A1 PCT/CN2013/079982 CN2013079982W WO2015010269A1 WO 2015010269 A1 WO2015010269 A1 WO 2015010269A1 CN 2013079982 W CN2013079982 W CN 2013079982W WO 2015010269 A1 WO2015010269 A1 WO 2015010269A1
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WO
WIPO (PCT)
Prior art keywords
crs
pcfich
channel
phich
target
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PCT/CN2013/079982
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English (en)
French (fr)
Inventor
余政
程型清
Original Assignee
华为技术有限公司
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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 CN201380002704.6A priority Critical patent/CN104508991B/zh
Priority to PCT/CN2013/079982 priority patent/WO2015010269A1/zh
Publication of WO2015010269A1 publication Critical patent/WO2015010269A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022Site diversity; Macro-diversity
    • H04B7/024Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00Baseband systems
    • H04L25/02Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202Channel estimation
    • H04L25/0224Channel estimation using sounding signals
    • H04L25/0228Channel estimation using sounding signals with direct estimation from sounding signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal
    • H04B7/0671Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same signal using different delays between antennas
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037Inter-user or inter-terminal allocation

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a PCFICH channel or PHICH channel detection method, apparatus, and terminal in an LTE system. Background technique
  • the Internet of Things refers to the acquisition of information in the physical world by deploying various devices with certain sensing, computing, execution and communication capabilities, and the realization of information transmission, coordination and processing through the network, thereby realizing the interconnection of people, objects and objects.
  • the internet In short, the Internet of Things is to achieve the interconnection of people and things, things and things (that is, M2M).
  • LTE Long Term Evolution (Long Term Evolution) terminal replaces the GSM/GPRS terminal used in the ,2 ⁇ application, thereby replacing the GSM/GPRS network with the LTE network in the ⁇ 2 ⁇ application.
  • the maximum system bandwidth that the LTE system can support is 20 MHz.
  • a normal LTE terminal can receive and transmit data on the entire carrier.
  • MTC Machine Type Communication
  • the receiving bandwidth of data, control and/or reference signals that the terminal can support is reduced, thereby enabling low-cost MTC.
  • the processing power of the terminal can only handle data, control and/or reference signals, etc. within a small bandwidth (eg 1.4 MHz, 3 MHz or 5 MHz), thereby reducing its RF and/or baseband costs.
  • the downlink data reception of the MTC terminal on a broadband carrier can only process data within a small bandwidth (ie, narrowband), and reduce the downlink of the MTC terminal.
  • Data processing capabilities and data storage resulting in MTC terminal cost savings.
  • the terminal needs to know the start time of the data transmission in the current subframe before receiving the data, where each subframe is composed of multiple OFDM (Orthogonal Frequency Division Multiplexing) symbols.
  • the CFI (Control Format Indicator) value carried by the PCFICH (Physical Control Format Indicator Channel) channel is indicated in this sub- The number of OFDM symbols occupied by the intra control channel, and the data transmission is mapped from the last OFDM symbol occupied by the control.
  • the base station needs to feed back the response information to the terminal through the physical hybrid indication channel.
  • the base station If the base station successfully receives the uplink data sent by the terminal, the base station feeds back the ACK (ACKnowledge) to the terminal through the PHICH (Physical Hybrid Indicator Channel) channel, otherwise the base station feeds back NACK (Not ACKnowledge) to the terminal.
  • ACK acknowledgeledge
  • PHICH Physical Hybrid Indicator Channel
  • the channel estimation may be performed based on the CRS (Common Reference Signal) on the entire carrier frequency band, and data demodulation and detection may be performed on the PCFICH channel or the PHICH channel determined by the system according to the result of the channel estimation.
  • CRS Common Reference Signal
  • MTC terminals based on cost reduction considerations, MTC terminals cannot generally support broadband data processing.
  • the embodiments of the present invention provide a channel detection method, device, and terminal, which are used to solve the technical problem that a narrowband MTC terminal cannot detect a PCFICH channel and a PHICH channel in the prior art.
  • an embodiment of the present invention provides a channel detection method, including: determining, adjacent to a resource element RE used for a physical control format indication channel PCFICH and/or a physical hybrid indication channel PHICH transmission, and carrying a common reference signal CRS The target CRS on the RE; the neighboring means: the number of intervals RE between the RE carrying the CRS and the RE used for PCFICH or PHICH transmission does not exceed a preset value, and based on the preset value
  • the machine type communication terminal MTC UE stores the CRS buffer size smaller than the standard UE storage CRS buffer size:
  • the information is based on the target CRS information Perform PCFICH channel estimation, including:
  • the information is performed according to the target CRS information.
  • PHICH channel estimation including:
  • the target CRS includes: a CRS on another subcarrier within the same orthogonal frequency division multiplexing OFDM symbol as the RE used for the PCFICH and/or the PHICH transmission, and / or CRS within the OFDM symbol adjacent to the RE used for PCFICH and/or PHICH transmission.
  • the time domain resource location of the target CRS, the frequency domain resource location, and the number of REs corresponding to the target CRS are predetermined.
  • the time domain resource location, the frequency domain resource location, and the number of REs corresponding to the target CRS of the target CRS are specifically determined according to PHICH and/or PCFICH channel detection requirements and/or The baseband signal processing capability is predetermined.
  • the embodiment of the present invention further provides a channel detecting apparatus, including: a determining module, configured to determine an RE that is adjacent to a resource element RE used for PCFICH and/or PHICH transmission and carries a common reference signal CRS Targeted CRS; the neighboring means: the number of intervals RE between the RE carrying the CRS and the RE used for PCFICH or PHICH transmission does not exceed a preset value, and the machine is based on the preset value
  • the buffer size of the type communication terminal MTC UE storing the CRS is smaller than the buffer size of the standard UE storage CRS;
  • a channel estimation module configured to perform the PCFICH and/or PHICH according to the target CRS Channel estimation of the channel
  • a channel detecting module configured to perform PCFICH and/or PHICH channel detection according to the result of the channel estimation.
  • the channel estimation module includes: a first determining submodule, configured to determine whether an RE of the four resource element groups REG used for the PCFICH channel transmission has an RE bearer CRS;
  • a first estimation submodule configured to use, according to the CRS carried in the REs included in the four REGs, a target CRS according to the result of the first determining submodule, and according to the target CRS PCFICH channel estimation.
  • the channel estimation module includes: a second determining submodule, configured to determine whether the RE included in the three resource element groups REG used for the PHICH channel transmission has an RE bearer CRS;
  • a second estimation submodule configured to: when a result of the second determining submodule is YES, use a CRS carried in an RE included in the three REGs as a target CRS, and perform PHICH according to the target CRS. Channel estimation.
  • an MTC terminal including: the device according to any one of the preceding items.
  • an embodiment of the present invention further provides an MTC terminal, including at least one processor, at least one network interface or other communication interface, a memory, and at least one communication bus, for implementing connection communication between the devices; ,
  • the program instructions include a determining module, a channel estimating module, and a channel detecting module; the determining module, configured to determine resources used for PCFICH and/or PHICH transmission a target CRS on the RE of the element RE that is adjacent to and carrying the common reference signal CRS; the neighbor is Means: the number of intervals RE between the RE carrying the CRS and the RE used for PCFICH or PHICH transmission does not exceed a preset value, and the machine type communication terminal MTC UE based on the preset value stores the CRS
  • the buffer size is smaller than the buffer size of the standard UE storage CRS: the channel estimation module is configured to perform channel estimation of the PCFICH and/or the PHICH channel according to the target CRS; The result of the channel estimation is performed for PCFICH and/or PHICH channel detection.
  • Advantages of the present invention include:
  • the terminal since the terminal only needs to perform channel estimation based on the CRS in the REG and/or the CRS adjacent to the REG, even if the MTC terminal only needs to store a limited CRS value, it is The narrowband PCFICH channel and/or PHICH channel estimation is performed based on the limited CRS, thereby implementing demodulation detection of the PCFICH and/or PHICH channel. Further, by adopting the method of the embodiment of the invention, the low-cost feature of the low-end MTC terminal can be maintained, and no development is needed. DRAWINGS
  • FIG. 1 is a flowchart of a channel detecting method according to an embodiment of the present invention
  • FIG. 2 is a flowchart of step 102 in the channel detection method according to an embodiment of the present invention
  • FIG. 3 is another flowchart of step 102 in the channel detection method according to an embodiment of the present invention
  • a schematic structural diagram of a channel detecting device provided;
  • FIG. 5 is a schematic structural diagram of a channel estimation module in a channel detecting apparatus according to an embodiment of the present invention.
  • FIG. 6 is another structure of a channel estimation module in a channel detecting apparatus according to an embodiment of the present invention.
  • FIG. 7 is a hardware architecture diagram of a user equipment according to an embodiment of the present invention.
  • the embodiments of the present invention provide a channel detection method, apparatus, and terminal.
  • the preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It is to be understood that the preferred embodiments described herein are merely illustrative and It is not intended to limit the invention. And in the case of no conflict, the features in the embodiments and the embodiments of the present application can be combined with each other.
  • the resources occupied by the PCFICH and the PHICH are in units of Resource Element Groups (REGs).
  • REGs Resource Element Groups
  • each PCFICH is mapped on 4 REGs
  • each PHICH channel is mapped on 3 or 2 REGs
  • multiple PHICH channels can be code-multiplexed on the same REG resource.
  • the REG is composed of a plurality of consecutive different REs (Resource Elements) in the same OFDM symbol, and the size of the REG is related to whether there is a CRS on the OFDM symbol.
  • each REG in the OFDM includes 6 REs, and two of the 6 REs are to be used for CRS mapping, and the other 4 REs are used for PCFICH or PHICH channel. If there is no CRS on the OFDM symbol, then each REG within the OFDM contains 4 REs, which are used for the PCFICH or PHICH channel. Therefore, in general, the PCFICH channel is mapped on 16 REs (that is, four REGs), and the PHICH channel is mapped on 12 (that is, three REGs) REs.
  • the PCFICH is mapped only on the first OFDM symbol, and the PHICH can be mapped in a normal duration or an extended duration manner.
  • the "normal duration” indicates that the PHICH is mapped only on the first OFDM symbol, and the “extended duration” indicates that the PHICH is mapped on multiple OFDM symbols.
  • the protocol has a specific number of OFDM symbols occupied by the "extended duration" mapping mode of the PHICH. Provisions.
  • 3 REG or PHICH channel transmissions occupied by PCFICH channel transmission occupy 3
  • the frequency interval between the REGs of the REG at the time of mapping, the protocol is also pre-defined, so that both the base station and the terminal can determine the frequency positions of the three REGs of the PCFICH channel or the three REGs of the PHICH channel.
  • the embodiment of the present invention provides an embodiment of a channel detection method. As shown in FIG. 1 , it is a flowchart of a channel detection method provided in Embodiment 1 of the present invention.
  • Step S101 Determine a target CRS on the RE adjacent to the resource element RE for PCFICH and/or PHICH transmission and carrying the common reference signal CRS.
  • Embodiments of the present invention can be applied to an MTC terminal. Since the MTC terminal can predetermine the RE resources for PCFICH and PHICH transmission, for the low-end MTC terminal, when it detects the PCFICH channel, it only needs to extract the data on the 16 REs corresponding to the PCFICH channel. And performing channel estimation according to the target CRS on the REs adjacent to the 16 REs and carrying the common reference signal CRS, the data on the 16 REs can be demodulated and decoded, thereby obtaining the CFI value and implementing the PCFICH channel. Detection.
  • the low-end MTC terminal only needs to extract the data on the 12 REs corresponding to the PHICH channel, and perform channel estimation according to the target CRS on the REs adjacent to the 12 REs and carrying the CRS. Therefore, the data on the 12 REs is demodulated and decoded, so that the response information carried by the PHICH is obtained, and the PHICH channel detection is implemented. Therefore, first, the terminal needs to determine the target CRS on the RE that is adjacent to the RE used for PCFICH and/or PHICH transmission and that carries the CRS.
  • adjacent means that the number of intervals RE between the RE carrying the CRS and the RE used for PCFICH or PHICH transmission does not exceed a preset value, and based on the preset value
  • the machine type communication terminal stores the buffer size of the CRS (buffer size) smaller than the buffer size of the normal UE storage CRS.
  • the target CRS may be on other subcarriers within the same OFDM symbol as the RE used for PCFICH and/or PHICH transmission.
  • the CRS may also be a CRS within an OFDM symbol adjacent to the RE used for PCFICH and/or PHICH transmission.
  • the embodiment of the present invention does not provide the specific number of "target CRSs", and the time domain resource location and frequency of the target CRS.
  • the number of REs corresponding to the domain resource location and the target CRS can be predetermined.
  • the base station pre-defines the number of antenna ports of the CRS
  • the number of target CRSs on each antenna port can be determined by a person skilled in the art according to channel detection requirements (eg, accuracy, algorithm complexity, or cost). And/or baseband signal processing capabilities are predetermined.
  • Step S102 Perform channel estimation of the PCFICH and/or PHICH channel according to the target CRS.
  • the terminal After determining the target CRS, the terminal can perform channel estimation of the PCFICH and/or PHICH channel according to the target CRS.
  • a flowchart for performing PCFICH channel estimation according to the target CRS may specifically include:
  • Step 201 Determine four resource element groups used in PCFICH channel transmission, including REG
  • N is a positive integer, and the typical value is 1, 2 or 4; then this step needs to determine the four resources used for PCFICH channel transmission. Whether the RE included in the element group REG has an RE bearer CRS;
  • Step 202 The CRS carried on the REs included in the four REGs is used as the target CRS, and the PCFICH channel estimation is performed according to the target CRS.
  • Step 203 Perform PCFICH channel estimation according to the target CRS.
  • the channel estimate on port i of REG j is based only on the CRS of port i adjacent to REG j.
  • a flowchart for performing PHICH channel estimation according to the neighboring CRS information may specifically include:
  • Step 301 Determine whether there are RE bearer CRSs in the REs included in the three resource element groups REG used for PHICH channel transmission, if yes, proceed to step 302; if no, proceed to step 303;
  • the base station is configured with N CRS ports ( ortO, , port ( Nl ) ), where N is a positive integer, and the typical value is 1, 2 or 4; in this step, it is necessary to first determine three resource element groups REG occupied by the PHICH channel. Whether the CRS is carried on the included RE.
  • Step 302 The CRS carried in the REs included in the three REGs is used as a target CRS, and the PHICH channel estimation is performed according to the target CRS.
  • Step 303 Perform PHICH channel estimation according to the target CRS.
  • the channel estimate on port i of REG j is based only on the CRS of port i adjacent to REG j.
  • Step S103 Perform the PCFICH and/or PHICH channel detection according to the result of the channel estimation.
  • step S102 demodulation detection of the PCFICH and/or PHICH channel is implemented, and the PCFICH and/or PHICH channel is detected.
  • the CRS of the neighboring port i occupies a part of the port i CRS on the entire carrier within one subframe.
  • the terminal only needs to perform channel estimation based on the CRS carried on the RE included in the REG and/or the CRS on the RE that is adjacent to the RE used by the PCFICH and/or the PHICH channel transmission, and the CRS.
  • the low-end MTC terminal only needs to store a limited CRS value, and can perform narrowband channel estimation based on the limited CRS, and implement demodulation detection of the PCFICH and/or the PHICH channel.
  • the method of the embodiment of the present invention does not need to be low-end.
  • the MTC terminal is developed to maintain the low cost of low-end MTC terminals.
  • the channel detection method according to the above embodiment of the present invention correspondingly, the embodiment of the present invention further provides a channel detection apparatus, and the structure diagram thereof is as shown in FIG. 4, and specifically includes:
  • the determining module 401 is configured to determine a target CRS on the RE that is adjacent to the resource element RE used for PCFICH and/or PHICH transmission and carries the common reference signal CRS.
  • the neighboring CRS information is: a CRS that is close to the RE time-frequency resource, and includes a CRS that is close to other subcarriers in the same OFDM symbol as the RE, and/or a CRS in the OFDM symbol adjacent to the RE.
  • the number of the neighboring CRSs is determined according to the requirements of PHICH and/or PCFICH channel detection.
  • the channel estimation module 402 is configured to perform channel estimation of the PCFICH and/or PHICH channel according to the target CRS.
  • the channel estimation module 402 may specifically include:
  • a first determining sub-module 501 configured to determine four resource elements used for channel transmission of the PCFICH Whether the RE included in the REG included in the group REG carries the CRS;
  • the first estimation sub-module 502 is configured to: when the result of the first determining sub-module is YES, use the CRS carried in the REs included in the four REGs as the target CRS, and according to the target CRS Perform PCFICH channel estimation;
  • the second estimation sub-module 503 is configured to perform PCFICH channel estimation according to the target CRS if the result of the first determining sub-module is NO.
  • the channel estimation module may specifically include:
  • the second determining sub-module 601 is configured to determine whether the RE included in the three resource element groups REG used for PHICH channel transmission has a RE bearer CRS;
  • the third estimation sub-module 602 is configured to: according to the result of the second determining sub-module, the CRS carried in the RE included in the three REGs as the target CRS, and according to the target CRS PHICH channel estimation;
  • the fourth estimation sub-module 603 is configured to perform PHICH channel estimation according to the target CRS if the result of the second determining sub-module is NO.
  • the channel detection module 403 is configured to perform PCFICH and/or PHICH channel detection according to the result of the channel estimation.
  • a hardware architecture diagram of a user equipment includes at least one processor 701 (eg, a CPU), at least one network interface 702, or other communication interface.
  • a memory 703, and at least one communication bus 704, are used to implement connection communication between the devices.
  • the processor 701 is configured to execute an executable module, such as a computer program, stored in the memory 703.
  • the memory 703 may include a high speed random access memory (RAM: Random Access Memory), and may also include a non-volatile memory such as at least one disk memory.
  • the communication connection between the system gateway and at least one other network element is implemented by at least one network interface 702 (which may be wired or wireless), and may use an Internet, a wide area network, a local network, a metropolitan area network, or the like.
  • the memory 703 stores program instructions for execution by the processor 701, the program instructions being executable by the processor 701, the program instructions comprising a determination module 401 channel estimation module 402 and a channel detection module 403,
  • the program instructions comprising a determination module 401 channel estimation module 402 and a channel detection module 403,
  • a determination module 401 channel estimation module 402 and a channel detection module 403
  • the device provided by the embodiment of the present invention only needs to perform channel estimation based on the CRS carried on the RE included in the REG and/or the CRS on the RE that is adjacent to the RE used in the PCFICH and/or the PHICH channel transmission and the CRS.
  • the terminal MTC terminal only needs to store a limited CRS value, and then performs narrowband channel estimation based on the limited CRS, and implements demodulation detection of the PCFICH and/or PHICH channel.
  • the channel detection method according to the foregoing embodiment of the present invention correspondingly, the embodiment of the present invention further provides an MTC terminal, and the terminal may include the foregoing channel detection apparatus.
  • the method of the embodiment of the present invention does not need to develop the low-end MTC terminal, and can maintain the cost characteristics of the low-end MTC terminal.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

一种信道检测方法、装置及终端,该方法包括:确定与用于物理控制格式指示信道PCFICH和/或物理混合指示信道PHICH传输的资源元素RE的邻近的且承载公共参考信号CRS的RE上的目标CRS;依据所述目标CRS信息进行PCFICH和/或PHICH信道的信道估计,依据所述信道估计的结果进行所述PCFICH和/或PHICH信道检测。采用本发明实施例提供的方案,基于有限的CRS进行窄带的PCFICH信道和/或PHICH信道估计,从而实现PCFICH和/或PHICH信道的解调检测。进一步的,采用本发明实施例,还能保持低端MTC终端的低成本特点,无需对其进行开发。

Description

一种信道检测方法、 装置及终端
技术领域
本发明涉及通信技术领域, 尤其涉及一种 LTE ***中 PCFICH信道或 PHICH信道检测方法、 装置及终端。 背景技术
物联网是指,通过部署具有一定感知、计算、执行和通信能力的各种设备, 获取物理世界的信息,通过网络实现信息传输、协同和处理,从而实现人与物、 物与物的互联的网络。 简而言之, 物联网就是要实现人与物、 物与物 (即是 M2M ) 的互联互通。 为了提供成本能够与 GSM (全球移动通讯***, Global System of Mobile communication ) /GPRS (通用分组无线服务技术, General Packet Radio Service )终端成本相比的,甚至比 GSM/GPRS终端成本还低的 LTE ( Long Term Evolution , 长期演进) 终端, 以替换在 Μ2Μ应用中应用的 GSM/GPRS终端 , 从而在 Μ2Μ应用中使用 LTE网络替换 GSM/GPRS网络。
LTE***可以支持的最大***带宽为 20MHz, 普通的 LTE终端能够在整个 载波上进行数据接收和发送。 而对于低成本 MTC ( Machine Type Communication, 机器类型通信)终端, 作为降低其成本的技术手段之一, 减 少终端所能支持的数据、控制和 /或参考信号的接收带宽,从而使低成本的 MTC 终端的处理能力只能够处理较小带宽内 (例如 1.4MHz, 3MHz或者 5MHz的) 数据、控制和 /或参考信号等,从而降低其射频和 /或基带成本。例如,对于 MTC 终端而言, 出于降低 MTC终端的成本考虑, 让 MTC终端在一个宽带的载波上 其下行数据接收只能够处理较小带宽内 (即是窄带) 的数据, 降低 MTC终端 的下行数据处理能力和数据存储, 从而实现了 MTC终端成本的节省。 在 LTE***中, 终端在接收数据之前需要获知在当前子帧中数据传输的起 始时刻, 其中, 每一个子帧是由多个 OFDM (正交频分复用, Orthogonal Frequency Division Multiplexing )符号构成, 在子帧的第一个 OFDM符号上, 通过 PCFICH (物理控制格式指示, Physical Control Format Indicator Channel ) 信道携带的 CFI (标准格式指示位, Control Format Indicator )值指示在这个子 帧内控制信道占用的 OFDM符号数, 数据传输则从控制占用的最后一个 OFDM 符号开始进行映射。 另外, LTE***中, 当终端在上行 PUSCH (物理上行共享 信道, Physical Uplink Shared Channel )传输数据后, 基站需要通过物理混合指 示信道反馈应答信息给终端。若基站成功接收到终端发送的上行数据,基站通 过 PHICH (物理混合指示, Physical Hybrid Indicator Channel )信道反馈 ACK ( ACKnowledge )给终端, 否则基站反馈 NACK ( Not ACKnowledge )给终端。 在现有技术中, 终端进行 PCFICH信道或 PHICH信道检测时, 因为承载 CFI值的 PCFICH信道和承载 ACK/NACK应答信息的 PHICH信道所占用的时 频资源是***预先确定好的, 所以对于非 MTC终端来讲, 可以基于整个载波 频段上的 CRS ( Common Reference Signal, 公共参考信号 )进行信道估计, 并 根据信道估计的结果去***预先确定的 PCFICH信道或 PHICH信道上进行数 据解调和检测。 而对于 MTC终端, 基于成本降低的考虑, 一般情况下 MTC 终端不能支持宽带的数据处理。
发明内容
本发明实施例提供一种信道检测方法、装置及终端, 用以解决现有技术中 存在的窄带的 MTC终端无法检测到 PCFICH信道和 PHICH信道的技术问题。
第一方面, 本发明实施例提供一种信道检测方法, 包括: 确定与用于物理控制格式指示信道 PCFICH 和 /或物理混合指示信道 PHICH传输所用的资源元素 RE邻近的且承载公共参考信号 CRS的 RE上的 目标 CRS; 所述邻近的是指: 承载所述 CRS的 RE与用于 PCFICH或 PHICH 传输所用的 RE之间的间隔 RE数不超过预先设定值, 且基于所述预先设定值 的机器类型通信终端 MTC UE存储 CRS的緩冲器大小小于标准 UE存储 CRS 的緩冲器大小:
依据所述目标 CRS进行所述 PCFICH和 /或 PHICH信道的信道估计; 依据所述信道估计的结果进行所述 PCFICH和 /或 PHICH信道检测。
在第一方面的第一种可能的实现方式中, 所述依据所述目标 CRS信息 进行 PCFICH信道估计, 包括:
判断 PCFICH信道传输所用的四个资源元素组 REG所包含的 RE中是否 有 RE承载 CRS, 如果是, 则将所述四个 REG所包含的 RE中所承载的 CRS 作为目标 CRS , 并根据所述目标 CRS进行 PCFICH信道估计。
在第一方面的第二种可能的实现方式中, 依据所述目标 CRS信息进行
PHICH信道估计, 包括:
判断 PHICH信道传输所用的三个资源元素组 REG所包含的 RE中是否有 RE承载 CRS, 如果是, 则将所述三个 REG所包含的 RE中所承载的 CRS作 为目标 CRS , 并根据所述目标 CRS进行 PHICH信道估计。
在第一方面的第三种可能的实现方式中,所述目标 CRS包括:与 PCFICH 和 /或 PHICH传输所用的 RE同一个正交频分复用 OFDM符号内的其他子载波 上的 CRS, 和 /或, 与 PCFICH和 /或 PHICH传输所用的 RE相邻的 OFDM符 号内的 CRS。
在第一方面的第四种可能的实现方式中, 所述目标 CRS 的时域资源位 置、 频域资源位置和目标 CRS所对应的 RE数目是预先确定的。
在第一方面的第五种可能的实现方式中, 所述目标 CRS 的时域资源位 置、频域资源位置和目标 CRS所对应的 RE数目具体根据 PHICH和 /或 PCFICH 信道检测的需求和 /或基带信号处理能力预先确定。
第二方面, 本发明实施例还提供一种信道检测装置, 包括: 确定模块, 用于确定与用于 PCFICH和 /或 PHICH传输所用的资源元素 RE的邻近的且承 载公共参考信号 CRS的 RE上的目标 CRS; 所述邻近的是指: 承载所述 CRS 的 RE与用于 PCFICH或 PHICH传输所用的 RE之间的间隔 RE数不超过预先 设定值, 且基于所述预先设定值的机器类型通信终端 MTC UE存储 CRS的緩 冲器大小小于标准 UE存储 CRS的緩冲器大小;
信道估计模块, 用于依据所述目标 CRS进行所述 PCFICH和 /或 PHICH 信道的信道估计;
信道检测模块, 用于依据所述所述信道估计的结果进行 PCFICH 和 /或 PHICH信道检测。
在第二方面的第一种可能的实现方式中, 所述信道估计模块包括: 第一判断子模块,用于判断 PCFICH信道传输所用的四个资源元素组 REG 所包含的 RE中是否有 RE承载 CRS;
第一估计子模块, 用于在所述第一判断子模块的结果为是的情况下,依据 所述四个 REG所包含的 RE中所承载的 CRS作为目标 CRS, 并根据所述目标 CRS进行 PCFICH信道估计。
在第二方面的第二种可能的实现方式中, 所述信道估计模块包括: 第二判断子模块, 用于判断 PHICH信道传输所用的三个资源元素组 REG 所包含的 RE中是否有 RE承载 CRS;
第二估计子模块, 用于在所述第二判断子模块的结果为是的情况下,将所 述三个 REG所包含的 RE中承载的 CRS作为目标 CRS,并根据所述目标 CRS 进行 PHICH信道估计。
第三方面, 本发明实施例还提供一种 MTC终端, 包括: 前述任一项所述 的装置。 第四方面, 本发明实施例还提供一种 MTC终端, 包括至少一个处理 器, 至少一个网络接口或者其他通信接口, 存储器, 和至少一个通信总 线, 用于实现这些装置之间的连接通信; 其中,
存储了用于被所述处理器执行的程序指令, 其中, 程序指令包括确定模 块、 信道估计模块和信道检测模块; 所述确定模块, 用于确定与用于 PCFICH和 /或 PHICH传输所用的资源元 素 RE的邻近的且承载公共参考信号 CRS的 RE上的目标 CRS;所述邻近的是 指: 承载所述 CRS的 RE与用于 PCFICH或 PHICH传输所用的 RE之间的间 隔 RE数不超过预先设定值,且基于所述预先设定值的机器类型通信终端 MTC UE存储 CRS的緩冲器大小小于标准 UE存储 CRS的緩冲器大小: 所述信道估计模块, 用于依据所述目标 CRS 进行所述 PCFICH 和 /或 PHICH信道的信道估计; 所述信道检测模块, 用于依据所述所述信道估计的结果进行 PCFICH和 / 或 PHICH信道检测。 本发明有益效果包括: 在本发明实施例中, 因为终端只需要基于 REG内 的 CRS和 /或 REG邻近的 CRS进行信道估计, 所以即便氏端 MTC终端也只 需要存储有限的 CRS值, 即是基于有限的 CRS进行窄带的 PCFICH信道和 / 或 PHICH信道估计, 从而实现 PCFICH和 /或 PHICH信道的解调检测。 进一 步的, 采用本发明实施例的方法, 还能保持低端 MTC终端的低成本特点, 无 需对其进行开发。 附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例描述中所 需要使用的附图作简单地介绍,显而易见地, 下面描述中的附图仅仅是本申请 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性的前提 下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例提供的信道检测方法的流程图;
图 2为本发明实施例提供的信道检测方法中步骤 102的一种流程图; 图 3为本发明实施例提供的信道检测方法中步骤 102的另一种流程图; 图 4为本发明实施例提供的信道检测装置的结构示意图;
图 5 为本发明实施例提供的信道检测装置中信道估计模块的一种结构示 意图;
图 6 为本发明实施例提供的信道检测装置中信道估计模块的另一种结构 示意图;
图 7为本发明实施例提供的一种用户设备的硬件架构图。
具体实施方式
本发明实施例提供了一种信道检测方法、装置及终端, 以下结合说明书附 图对本发明的优选实施例进行说明,应当理解, 此处所描述的优选实施例仅用 于说明和解释本发明, 并不用于限定本发明。 并且在不冲突的情况下, 本申请 中的实施例及实施例中的特征可以相互组合。
在 LTE***中, PCFICH和 PHICH占用的资源是以资源元素组( REG, Resource Element Group )为单位的。 其中,每个 PCFICH在 4个 REG上映射, 而每个 PHICH信道在 3个或 2个 REG上映射, 多个 PHICH信道可以在相同 的 REG资源上进行码分复用。 其中, REG是由同一个 OFDM符号内的多个 连续的不同 RE (资源元素, Resource Element )构成, REG的大小与该 OFDM 符号上是否有 CRS有关。 若一个 OFDM符号上有 CRS, 则在该 OFDM内的 每个 REG包含 6个 RE, 且这 6个 RE中有两个 RE要用于 CRS映射, 除此之 外的 4个 RE用于 PCFICH或者 PHICH信道。 若该 OFDM符号上没有 CRS, 则在该 OFDM内的每个 REG包含 4个 RE,这 4个 RE用于 PCFICH或者 PHICH 信道。 因此, 一般情况下, PCFICH信道要在 16个 RE (即是四个 REG )上进 行映射, PHICH信道要在 12个(即是三个 REG ) RE上映射。
此外, LTE***中, PCFICH只在第一个 OFDM符号上映射, 而 PHICH 可以采用标准期间 ( normal duration )或者演进期间 ( extended duration )方式 进行映射。 其中, "normal duration" 表示 PHICH只在第一个 OFDM符号上映 射, "extended duration" 表示 PHICH在多个 OFDM符号上进行映射, 协议对 PHICH 的 "extended duration" 映射方式占用的 OFDM符号数有具体的规定。 此外, PCFICH信道传输占用的 4个 REG或 PHICH信道传输占用的 3个 REG在映射时的 REG之间的频率间隔, 协议也有预先的规定, 这样基站和终 端两侧就都能够确定 PCFICH信道的 4个 REG或 PHICH信道的 3个 REG的 频率位置。
较佳的, 下面结合附图, 用具体实施例对本发明提供的方法、 装置及终端 进行详细描述。
本发明实施例提供一种信道检测方法实施例,如图 1所示, 为本发明实施 例 1中提供的信道检测方法的流程图, 本实施例具体可以包括:
步骤 S101、确定与用于 PCFICH和 /或 PHICH传输的资源元素 RE邻近的 且承载公共参考信号 CRS的 RE上的目标 CRS。
本发明实施例可以应用于 MTC终端。 因为 MTC终端可以预先确定出用 于 PCFICH和 PHICH传输的 RE资源 , 所以对于低端 MTC终端而言, 当其检 测 PCFICH信道时, 其只需要把 PCFICH信道对应的 16个 RE上的数据提取 出来,并根据这 16个 RE邻近的且承载公共参考信号 CRS的 RE上的目标 CRS 进行信道估计, 即可对这 16个 RE上的数据进行解调译码, 从而求解出 CFI 的值, 实现 PCFICH信道检测。 类似的, 对于 PHICH信道的检测, 低端 MTC 终端只需要把 PHICH信道对应的 12个 RE上的数据提取出来, 并根据这 12 个 RE邻近的且承载 CRS的 RE上的目标 CRS进行信道估计,从而对这 12个 RE上的数据进行解调译码, 从而获知 PHICH携带的应答信息, 实现 PHICH 信道检测。 因此, 首先, 终端需要确定与用于 PCFICH和 /或 PHICH传输所占 用的 RE邻近的且承载 CRS的 RE上的目标 CRS。
在本发明实施例中, "邻近的" 是指承载所述 CRS的 RE与用于 PCFICH 或 PHICH传输所用的 RE之间的间隔 RE数不超过预先设定值,且基于所述预 先设定值的机器类型通信终端( MTC UE )存储 CRS的緩冲器大小( buffer size ) 小于标准(normal ) UE存储 CRS的緩冲器大小。 具体的, 目标 CRS可以是 与 PCFICH和 /或 PHICH传输所用的 RE同一个 OFDM符号内的其它子载波上 的 CRS,也可以是与 PCFICH和 /或 PHICH传输所用的 RE相邻的 OFDM符号 内的 CRS。 不过因为信道检测的需求不同, 例如精度、 算法复杂度或者成本 等因素不确定, 所以本发明实施例也未给出具体的 "目标 CRS" 的个数, 该 目标 CRS的时域资源位置、 频域资源位置和目标 CRS所对应的 RE数目是可 以预先确定的。 具体的, 在基站预先定义 CRS的天线点 ( antenna port )数的 情况下,在每个 antenna port上的目标 CRS的数目可以由本领域技术人员根据 信道检测的需求(例如精度, 算法复杂度或成本等)和 /或基带信号处理能力 预先确定。
步骤 S102、 依据所述目标 CRS进行 PCFICH和 /或 PHICH信道的信道估 计。
终端在确定目标 CRS之后, 就可以根据该目标 CRS进行 PCFICH和 /或 PHICH信道的信道估计。
其中, 对于 PCFICH信道估计来讲, 参考图 2所示, 为依据目标 CRS进 行 PCFICH信道估计的流程图, 具体可以包括:
步骤 201 : 判断 PCFICH信道传输所用的四个资源元素组 REG所包含的
RE中是否有 RE承载 CRS, 如果是, 则进入步骤 202; 如果否, 则进入步骤 203;
殳设基站侧配置了 N个 CRS点 ( port ) ( portO, , port ( N-l ) ), N 为正整数, 典型值为 1、 2或 4; 则本步骤需要判断 PCFICH信道传输所用的 四个资源元素组 REG所包含的 RE中是否有 RE承载 CRS;
步骤 202:将所述四个 REG所包含的 RE上所承载的 CRS作为目标 CRS, 并依据所述目标 CRS进行 PCFICH信道估计;
若 PCFICH信道占用的 REG j ( j=0, , K-l )内包含 port i ( i=0, ,
N-l ) 的 CRS, 其中, K=4; 贝' J REGj的 port i ( i=0, , N-l )上的信道估 计则基于 REGj内的 port i 的 CRS和 /或 REGj邻近的 port i 的 CRS进行; 步骤 203: 依据所述目标 CRS进行 PCFICH信道估计。
否则, REG j的 port i上的信道估计则只基于 REG j邻近的 port i 的 CRS 进行。
而对于 PHICH信道估计来讲, 参考图 3所示, 为依据邻近 CRS信息进行 PHICH信道估计的流程图, 具体可以包括:
步骤 301 : 判断 PHICH信道传输所用用的三个资源元素组 REG所包含的 RE中是否有 RE承载 CRS, 如果是, 则进入步骤 302; 如果否, 则进入步骤 303;
殳设基站配置了 N个 CRS port ( ortO, , port ( N-l ) ), N为正整数, 典型值为 1、 2或 4; 在本步骤中需要首先判断 PHICH信道占用的三个资源元 素组 REG所包含的 RE上是否承载 CRS。
步骤 302:将所述三个 REG所包含的 RE中所承载的 CRS作为目标 CRS, 并依据所述目标 CRS进行 PHICH信道估计;
若该 PHICH信道占用的 REG j ( j=0, , K-l )内包含 port i( i=0, , N-l ) 的 CRS, 其中, K=3 , 贝' J REG j的 port i ( i=0, , N-l )上的信道 估计则基于 REG j内的 port i 的 CRS和 /或 REG j邻近的 port i 的 CRS进行; 步骤 303: 依据所述目标 CRS进行 PHICH信道估计。
否则, REG j的 port i上的信道估计则只基于 REG j邻近的 port i 的 CRS 进行。
步骤 S 103、依据所述信道估计的结果进行所述 PCFICH和 /或 PHICH信道 检测。
再根据步骤 S102的信道估计结果实现 PCFICH和 /或 PHICH信道的解调 检测 , 检测出 PCFICH和 /或 PHICH信道。
可见, 在本发明实施例中, 只要 PCFICH信道或 PHICH信道占用的 REG j (j=0, , K-l ) 内包含 port i ( i=0, , N-l ) 的 CRS, 贝' J PCFICH 或 PHICH信道占用的 REG j内的 port i上的信道估计就可以基于 REG j内的 port i 的 CRS和 /或 REG j邻近的 port i 的 CRS进行; 否则, REG j的 port i 上的信道估计则只能基于 REG j邻近的 port i 的 CRS进行。其中,邻近的 port i的 CRS占据了一个子帧内的整个载波上的 port i CRS中的一部分。
因为在本发明实施例中,终端只需要基于 REG所包含的 RE上承载的 CRS 和 /或与 PCFICH和 /或 PHICH信道传输所用的 RE邻近的且承载 CRS的 RE上 的 CRS进行信道估计, 这样低端 MTC终端只需要存储有限的 CRS值, 即可 基于有限的 CRS进行窄带信道估计, 实现 PCFICH和 /或 PHICH信道的解调 检测,进一步的,采用本发明实施例的方式不需要对低端 MTC终端进行开发, 还能保持低端 MTC终端的低成本特点。 基于同一发明构思,根据本发明上述实施例提供的信道检测方法,相应地, 本发明实施例还提供了一种信道检测装置, 其结构示意图如图 4所示, 具体包 括:
确定模块 401 , 用于确定与用于 PCFICH和 /或 PHICH传输所用的资源元 素 RE的邻近的且承载公共参考信号 CRS的 RE上的目标 CRS。
所述邻近 CRS信息为: 与 RE时频资源上相近的 CRS, 包括与 RE同一个 OFDM符号内的其他子载波上相近的 CRS , 和 /或 , 与 RE相邻的 OFDM符号 内的 CRS。 其中 , 所述邻近 CRS的数目根据 PHICH和 /或 PCFICH信道检测 的需求进行确定。
信道估计模块 402,用于依据所述目标 CRS进行所述 PCFICH和 /或 PHICH 信道的信道估计。
参考图 5所示,在进行 PCFICH信道估计时, 所述信道估计模块 402具体 可以包括:
第一判断子模块 501 , 用于判断 PCFICH信道传输所用用的四个资源元素 组 REG所包含的 RE中是否有 RE承载 CRS;
第一估计子模块 502, 用于在所述第一判断子模块的结果为是的情况下, 将所述四个 REG所包含的 RE中所承载的 CRS作为目标 CRS, 并依据所述目 标 CRS进行 PCFICH信道估计;
第二估计子模块 503 , 用于在所述第一判断子模块的结果为否的情况下, 依据所述目标 CRS进行 PCFICH信道估计。
参考图 6所示, 在进行 PHICH信道估计时, 所述信道估计模块具体可以 包括:
第二判断子模块 601 , 用于判断 PHICH信道传输所用用的三个资源元素 组 REG所包含的 RE中是否有 RE承载 CRS;
第三估计子模块 602, 用于在所述第二判断子模块的结果为是的情况下, 依据所述三个 REG所包含的 RE中承载的 CRS作为目标 CRS, 并依据所述目 标 CRS进行 PHICH信道估计;
第四估计子模块 603 , 用于在所述第二判断子模块的结果为否的情况下, 依据所述目标 CRS进行 PHICH信道估计。
信道检测模块 403 , 用于依据所述所述信道估计的结果进行 PCFICH和 / 或 PHICH信道检测。
因为在本发明实施例中, 信道检测装置只需要基于 REG所包含的 RE上 承载的 CRS和 /或与 PCFICH和 /或 PHICH信道传输所用的 RE邻近的且承载 CRS的 RE上的 CRS进行信道估计, 这样低端 MTC终端只需要存储有限的 CRS值, 即可基于有限的 CRS进行窄带信道估计, 实现 PCFICH和 /或 PHICH 信道的解调检测。 参考图 7所示, 为本发明实施例提供的一种用户设备的硬件架构图, 包括 至少一个处理器 701 (例如 CPU ), 至少一个网络接口 702或者其他通信接口, 存储器 703 , 和至少一个通信总线 704, 用于实现这些装置之间的连接通信。 其中, 所述处理器 701用于执行所述存储器 703中存储的可执行模块, 例如计 算机程序。 存储器 703可能包含高速随机存取存储器(RAM: Random Access Memory ), 也可能还包括非不稳定的存者器( non- volatile memory ), 例如至少 一个磁盘存储器。 通过至少一个网络接口 702 (可以是有线或者无线) 实现该 ***网关与至少一个其他网元之间的通信连接, 可以使用互联网, 广域网, 本 地网, 城域网等。 在一些实施方式中,所述存储器 703存储了用于被所述处理器 701执行的 程序指令,程序指令可以被处理器 701执行,程序指令包括确定模块 401信道 估计模块 402和信道检测模块 403 , 其中, 各个模块的实现可以参考图 4所揭 示的相应模块, 这里不再贅述。 本发明实施例提供的装置, 只需要基于 REG所包含的 RE上承载的 CRS 和 /或与 PCFICH和 /或 PHICH信道传输所用的 RE邻近的且承载 CRS的 RE上 的 CRS进行信道估计, 这样低端 MTC终端只需要存储有限的 CRS值, 即可 基于有限的 CRS进行窄带信道估计, 实现 PCFICH和 /或 PHICH信道的解调 检测。 基于同一发明构思,根据本发明上述实施例提供的信道检测方法,相应地, 本发明实施例还提供了一种 MTC终端,该终端可以包括前述的信道检测装置。 采用本发明实施例的方式不需要对低端 MTC 终端进行开发, 还能保持低端 MTC终端的氏成本特点。
需要说明的是,在本文中,诸如第一和第二等之类的关系术语仅仅用来将 一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些 实体或操作之间存在任何这种实际的关系或者顺序。 而且, 术语 "包括"、 "包 含"或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素 的过程、 方法、 物品或者设备不仅包括那些要素, 而且还包括没有明确列出的 其他要素, 或者是还包括为这种过程、 方法、 物品或者设备所固有的要素。 在 没有更多限制的情况下, 由语句 "包括一个 ... ... " 限定的要素, 并不排除在包 括所述要素的过程、 方法、 物品或者设备中还存在另外的相同要素。 明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及 其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种信道检测方法, 其特征在于, 包括:
确定与用于物理控制格式指示信道 PCFICH 和 /或物理混合指示信道 PHICH传输所用的资源元素 RE邻近的且承载公共参考信号 CRS的 RE上的 目标 CRS; 所述邻近的是指: 承载所述 CRS的 RE与用于 PCFICH或 PHICH 传输所用的 RE之间的间隔 RE数不超过预先设定值, 且基于所述预先设定值 的机器类型通信终端 MTC UE存储 CRS的緩冲器大小小于标准 UE存储 CRS 的緩冲器大小:
依据所述目标 CRS进行所述 PCFICH和 /或 PHICH信道的信道估计; 依据所述信道估计的结果进行所述 PCFICH和 /或 PHICH信道检测。
2、 如权利要求 1所述的方法, 其特征在于, 所述依据所述目标 CRS信息 进行 PCFICH信道估计, 包括:
判断 PCFICH信道传输所用的四个资源元素组 REG所包含的 RE中是否 有 RE承载 CRS, 如果是, 则将所述四个 REG所包含的 RE中所承载的 CRS 作为目标 CRS , 并根据所述目标 CRS进行 PCFICH信道估计。
3、 如权利要求 1所述的方法, 其特征在于, 依据所述目标 CRS信息进行 PHICH信道估计, 包括:
判断 PHICH信道传输所用的三个资源元素组 REG所包含的 RE中是否有 RE承载 CRS, 如果是, 则将所述三个 REG所包含的 RE中所承载的 CRS作 为目标 CRS, 并根据所述目标 CRS进行 PHICH信道估计。
4、如权利要求 1所述的方法,其特征在于,所述目标 CRS包括:与 PCFICH 和 /或 PHICH传输所用的 RE同一个正交频分复用 OFDM符号内的其他子载波 上的 CRS, 和 /或, 与 PCFICH和 /或 PHICH传输所用的 RE相邻的 OFDM符 号内的 CRS。
5、 如权利要求 1所述的方法, 其特征在于, 所述目标 CRS的时域资源位 置、 频域资源位置和目标 CRS所对应的 RE数目是预先确定的。
6、 如权利要求 5所述的方法, 其特征在于, 其中, 所述目标 CRS的时域 资源位置、 频域资源位置和目标 CRS所对应的 RE数目具体根据 PHICH和 / 或 PCFICH信道检测的需求和 /或基带信号处理能力预先确定。
7、 一种信道检测装置, 其特征在于, 包括:
确定模块, 用于确定与用于 PCFICH和 /或 PHICH传输所用的资源元素 RE的邻近的且承载公共参考信号 CRS的 RE上的目标 CRS;所述邻近的是指: 承载所述 CRS的 RE与用于 PCFICH或 PHICH传输所用的 RE之间的间隔 RE 数不超过预先设定值, 且基于所述预先设定值的机器类型通信终端 MTC UE 存储 CRS的緩冲器大小小于标准 UE存储 CRS的緩冲器大小;
信道估计模块, 用于依据所述目标 CRS进行所述 PCFICH和 /或 PHICH 信道的信道估计;
信道检测模块, 用于依据所述所述信道估计的结果进行 PCFICH 和 /或 PHICH信道检测。
8、 如权利要求 7所述的装置, 其特征在于, 所述信道估计模块包括: 第一判断子模块,用于判断 PCFICH信道传输所用的四个资源元素组 REG 所包含的 RE中是否有 RE承载 CRS;
第一估计子模块, 用于在所述第一判断子模块的结果为是的情况下,依据 所述四个 REG所包含的 RE中所承载的 CRS作为目标 CRS, 并根据所述目标 CRS进行 PCFICH信道估计。
9、 如权利要求 7所述的装置, 其特征在于, 所述信道估计模块包括: 第二判断子模块, 用于判断 PHICH信道传输所用的三个资源元素组 REG 所包含的 RE中是否有 RE承载 CRS;
第二估计子模块, 用于在所述第二判断子模块的结果为是的情况下,将所 述三个 REG所包含的 RE中承载的 CRS作为目标 CRS ,并根据所述目标 CRS 进行 PHICH信道估计。
10、一种 MTC终端, 其特征在于, 包括权利要求 7〜9任一项所述的装置。
11、 一种 MTC终端, 包括至少一个处理器, 至少一个网络接口或者 其他通信接口, 存储器, 和至少一个通信总线, 用于实现这些装置之间 的连接通信; 其中,
存储了用于被所述处理器执行的程序指令, 其中, 程序指令包括确定模 块、 信道估计模块和信道检测模块; 所述确定模块, 用于确定与用于 PCFICH和 /或 PHICH传输所用的资源元 素 RE的邻近的且承载公共参考信号 CRS的 RE上的目标 CRS;所述邻近的是 指: 承载所述 CRS的 RE与用于 PCFICH或 PHICH传输所用的 RE之间的间 隔 RE数不超过预先设定值,且基于所述预先设定值的机器类型通信终端 MTC UE存储 CRS的緩冲器大小小于标准 UE存储 CRS的緩冲器大小: 所述信道估计模块, 用于依据所述目标 CRS 进行所述 PCFICH 和 /或 PHICH信道的信道估计; 所述信道检测模块, 用于依据所述所述信道估计的结果进行 PCFICH和 / 或 PHICH信道检测。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017181375A1 (zh) * 2016-04-20 2017-10-26 华为技术有限公司 传输信号的方法、基站和用户设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101621492A (zh) * 2009-08-14 2010-01-06 中兴通讯股份有限公司 一种专用解调数据参考信号的资源确定方法
CN102461053A (zh) * 2009-06-25 2012-05-16 摩托罗拉*** 异构无线通信网络中的控制和数据信令
CN102511130A (zh) * 2009-08-14 2012-06-20 诺基亚西门子通信公司 对协作多点传输的改进
WO2013049768A1 (en) * 2011-09-30 2013-04-04 Interdigital Patent Holdings, Inc. Device communication using a reduced channel bandwidth

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102238680B (zh) * 2010-05-07 2013-12-04 华为技术有限公司 异构网络切换控制方法和信号发送方法及设备和通信***
US9078253B2 (en) * 2011-11-28 2015-07-07 Samsung Electronics Co., Ltd. Apparatus and method for machine-type communications

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102461053A (zh) * 2009-06-25 2012-05-16 摩托罗拉*** 异构无线通信网络中的控制和数据信令
CN101621492A (zh) * 2009-08-14 2010-01-06 中兴通讯股份有限公司 一种专用解调数据参考信号的资源确定方法
CN102511130A (zh) * 2009-08-14 2012-06-20 诺基亚西门子通信公司 对协作多点传输的改进
WO2013049768A1 (en) * 2011-09-30 2013-04-04 Interdigital Patent Holdings, Inc. Device communication using a reduced channel bandwidth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017181375A1 (zh) * 2016-04-20 2017-10-26 华为技术有限公司 传输信号的方法、基站和用户设备

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