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WO2015010269A1 - Procédé, appareil et terminal de détection de canal - Google Patents

Procédé, appareil et terminal de détection de canal 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
Authority
WO
WIPO (PCT)
Prior art keywords
crs
pcfich
channel
phich
target
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2013/079982
Other languages
English (en)
Chinese (zh)
Inventor
余政
程型清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to PCT/CN2013/079982 priority Critical patent/WO2015010269A1/fr
Priority to CN201380002704.6A priority patent/CN104508991B/zh
Publication of WO2015010269A1 publication Critical patent/WO2015010269A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • 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
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity 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
    • H04B7/0667—Diversity 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
    • H04B7/0671—Diversity 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
    • 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
    • H04L5/0037—Inter-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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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention porte sur un procédé, un appareil et un terminal de détection de canal. Le procédé consiste : à déterminer un CRS (signal de référence commun) cible, lequel est adjacent à un élément de ressource (RE) pour la transmission d'un canal d'indicateur de format de commande physique (PCFICH) et/ou d'un canal d'indicateur d'ARQ (demande automatique de répétition) hybride physique (PHICH) et qui est situé sur le RE véhiculant le signal de référence commun (CRS); à effectuer une estimation de canal sur le PCFICH et/ou le PHICH en fonction des informations du CRS cible, et effectuer une détection de canal sur le PCFICH et/ou le PHICH en fonction du résultat d'estimation de canal. Par adoption de la solution technique décrite dans le mode de réalisation de la présente invention, une estimation de canal à bande étroite sur le PCFICH et/ou le PHICH est effectuée sur la base d'un CRS fini, ce qui permet en outre une détection de démodulation du PCFICH et/ou du PHICH. En outre, par adoption du mode de réalisation de la présente invention, il est également possible de conserver la caractéristique d'un faible coût pour un terminal de communication du type machine (MTC) bas de gamme, et il n'est pas nécessaire de développer le terminal MTC.
PCT/CN2013/079982 2013-07-24 2013-07-24 Procédé, appareil et terminal de détection de canal Ceased WO2015010269A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/079982 WO2015010269A1 (fr) 2013-07-24 2013-07-24 Procédé, appareil et terminal de détection de canal
CN201380002704.6A CN104508991B (zh) 2013-07-24 2013-07-24 一种信道检测方法、装置及终端

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PCT/CN2013/079982 WO2015010269A1 (fr) 2013-07-24 2013-07-24 Procédé, appareil et terminal de détection de canal

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