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WO2017063177A1 - 一种信号确定方法及装置 - Google Patents

一种信号确定方法及装置 Download PDF

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Publication number
WO2017063177A1
WO2017063177A1 PCT/CN2015/092031 CN2015092031W WO2017063177A1 WO 2017063177 A1 WO2017063177 A1 WO 2017063177A1 CN 2015092031 W CN2015092031 W CN 2015092031W WO 2017063177 A1 WO2017063177 A1 WO 2017063177A1
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WO
WIPO (PCT)
Prior art keywords
signal
subcarriers
reference signal
tae
receiving device
Prior art date
Application number
PCT/CN2015/092031
Other languages
English (en)
French (fr)
Inventor
薛剑韬
李伊婕
崔杰
李安俭
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP15906062.3A priority Critical patent/EP3352500B1/en
Priority to PCT/CN2015/092031 priority patent/WO2017063177A1/zh
Priority to CN201580080440.5A priority patent/CN107615812B/zh
Publication of WO2017063177A1 publication Critical patent/WO2017063177A1/zh
Priority to US15/952,840 priority patent/US10306585B2/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H04W64/006Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
    • 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
    • H04L5/0091Signaling for the administration of the divided path
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/02Traffic management, e.g. flow control or congestion control
    • H04W28/10Flow control between communication endpoints
    • H04W28/12Flow control between communication endpoints using signalling between network elements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/0055Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007Open loop measurement
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W64/00Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a signal determining method and apparatus.
  • the positioning service is a value-added service that provides location information (such as latitude and longitude coordinate information) of the mobile terminal through the network of the telecommunication mobile operator and provides corresponding services for the user under the support of the electronic map platform.
  • the Time Difference Of Arrival (TDOA) technology is a commonly used positioning technology.
  • the principle is that when positioning a mobile terminal, three or more network nodes (such as a base station) can be used as reference nodes. Wherein, the location information of each reference node is known; and when the mobile terminal separately sends an uplink sounding reference signal (SRS) to each reference node, according to the SRS on different reference nodes.
  • SRS uplink sounding reference signal
  • the TDOA determining the location of the mobile terminal; or when each reference node sends a downlink Positioning Reference Signal (PSR) detection signal to the mobile terminal, according to the PSR on the mobile terminal TDOA, determining the location of the mobile terminal.
  • PSR downlink Positioning Reference Signal
  • the method for realizing positioning according to the TDOA of the uplink signal is also called the Uplink Time Difference Of Arrival (UTDOA) positioning method, and the method for realizing the positioning according to the TDOA of the downlink signal is also called Observed Time difference (Observed Time). Difference Of Arrival, OTDOA) positioning method.
  • UTDOA Uplink Time Difference Of Arrival
  • OTDOA Observed Time difference
  • the accuracy of obtaining the position information according to the TDOA of the signal is inversely proportional to the bandwidth of the signal.
  • the signal width of the UWB system is in the order of nanoseconds, and the bandwidth can reach several gigahertz (GHz), so the obtained position information and actual information
  • the error of the position information is in the centimeter level.
  • the bandwidth of the PSR and SRS for positioning in the current communication system is 20 megahertz (MHz), and the limited bandwidth results in a large error in the position information obtained by the positioning, and the accuracy is higher. low.
  • the signal can be transmitted by the carrier aggregation technology to increase the bandwidth of the signal.
  • the generated aggregated reference signal has a large change in waveform compared with the signal before the aggregation. Therefore, the signal is received.
  • the device cannot accurately determine whether the received signal is the aggregated reference signal. As a result, when the transmission time of the aggregated reference signal is determined, a large error occurs, and finally the position information obtained by the positioning has a large error and the positioning fails.
  • the embodiment of the invention provides a signal determining method and device, which are used to solve the problem that the signal receiving device in the traditional positioning method cannot accurately determine whether the received signal is an aggregated reference signal, resulting in a large error in the position information obtained by the positioning, and the positioning fails.
  • the problem is a signal determining method and device, which are used to solve the problem that the signal receiving device in the traditional positioning method cannot accurately determine whether the received signal is an aggregated reference signal, resulting in a large error in the position information obtained by the positioning, and the positioning fails.
  • a signal determining method includes:
  • the signal receiving device receives the configuration information sent by the signal sending device, and determines a Time Alignment Error (TAE) between the at least two subcarriers used by the signal sending device to transmit the reference signal; the signal receiving device is to be located. a mobile terminal or a reference node, and if the signal receiving device is a mobile terminal to be located, the signal sending device is a reference node; if the signal receiving device is a reference node, the signal sending device is a mobile terminal to be located The reference node is configured to locate the mobile terminal to be located, where the configuration information includes: reference signal configuration information set for each of the at least two subcarriers;
  • the signal receiving device After receiving the signal, the signal receiving device matches the signal with the first aggregated reference signal; and when the signal matches the first aggregated reference signal, determining that the signal is sent by the signal a second aggregation reference signal sent by the device, where the second aggregation reference signal is generated by the signal sending device performing carrier aggregation on a reference signal sent on each of the at least two subcarriers.
  • the signal receiving Receiving, by the device, the configuration information sent by the signaling device including:
  • the signal receiving device receives the configuration information periodically sent by the signal sending device on each of the at least two subcarriers.
  • the signal receiving device determines the TAE, including:
  • the signal receiving device uses the stored TAE corresponding to the signal transmitting device as the TAE.
  • the signal receiving device when the signal receiving device is a reference node, the signal receiving device is configured to store the signal
  • the TAE corresponding to the sending device, before the TAE includes:
  • the signal receiving device determines a TAE corresponding to the signal sending device at a time when the location information of the signal transmitting device is determined, and stores the TAE;
  • the signal receiving device determines that the signal is sent when the location information of the transceiver corresponding to each of the at least two subcarriers in the signal receiving device is different from the location information of the signal receiving device.
  • the moment of the location information of the device, determining the TAE corresponding to the signaling device including:
  • the signal receiving device receives, by a transceiver corresponding to each of the at least two subcarriers, a reference signal sent by the signal transmitting device on each of the at least two subcarriers;
  • the signal receiving device determines a transmission time of the reference signal transmitted on each subcarrier; and determines a transceiver corresponding to each subcarrier according to the location information of the transceiver corresponding to each subcarrier and the location information of the signal transmitting device. The distance between the signal transmitting devices;
  • the signal receiving device performs the following operations for each of the at least two subcarriers:
  • the signal receiving device determines a TAE corresponding to the signal sending device according to the determined length of time synchronization error between each two subcarriers;
  • the signal receiving device determines the signal transmitting device The moment of the location information, determining the TAE corresponding to the signaling device, including:
  • the signal receiving device receives a reference signal sent by the signal sending device on each of the at least two subcarriers
  • the signal receiving device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signal receiving device performs the following operations for each of the at least two subcarriers:
  • the signal receiving device determines a TAE corresponding to the signal transmitting device according to the determined length of time synchronization error between each two subcarriers.
  • the transceiver corresponding to each of the at least two subcarriers in the signal receiving device When the location information is different from the location information of the signal receiving device, the length of the time synchronization error between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the signal sending device
  • S 2 is the transceiver corresponding to the second subcarrier and the
  • C is the transmission speed of the reference signal
  • n 1 is the distance estimation error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is the second subcarrier The distance estimation error caused by the noise of the reference signal transmitted.
  • the signal receiving device is based on the generated reference The signal, and the determined TAE, generates a first aggregated reference signal, including:
  • the signal receiving device performs a synthesis process on the generated reference signal according to the TAE to generate the first aggregated reference signal.
  • a signal determining method includes:
  • the signal sending device sends the configuration information to the signal receiving device, and the signal transmitting device is configured to transmit a time synchronization error TAE between the at least two subcarriers of the reference signal;
  • the signal sending device is a mobile terminal or a reference node to be located, and if The signal sending device is a mobile terminal to be located, and the signal receiving device is a reference node; if the signal sending device is a reference node, the signal receiving device is a mobile terminal to be located;
  • the mobile terminal to be located performs positioning; wherein the configuration information includes: reference signal configuration information set for each of the at least two subcarriers;
  • the signal sending device performs carrier aggregation on a reference signal sent on each of the at least two subcarriers to obtain an aggregated reference signal
  • the signal transmitting device transmits the aggregated reference signal to the signal receiving device.
  • the sending, by the signal sending device, the configuration information to the signal receiving device includes:
  • the signal transmitting device periodically transmits the configuration information to the signal receiving device on each of the at least two subcarriers.
  • the signal transmitting device determines the TAE.
  • the signal sending device determines the TAE, including :
  • the signal transmitting device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal transmitting device determines the TAE according to the determined length of time synchronization error between every two subcarriers.
  • the signal sending device when the signal sending device is a reference node, the at least two children in the signal sending device When the location information of the transceiver corresponding to each subcarrier in the carrier is different from the location information of the signaling device, the signaling device determines the TAE, including:
  • the signal transmitting device determines a transmission time of the reference signal transmitted on each subcarrier; and determines a transceiver corresponding to each subcarrier according to the location information of the transceiver corresponding to each subcarrier and the location information of the reference mobile terminal The distance between the reference mobile terminals;
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal sending device determines the TAE according to the determined length of time synchronization error between every two subcarriers
  • the signal sending device determines the TAE, including:
  • the signal transmitting device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal transmitting device determines the TAE according to the determined length of time synchronization error between every two subcarriers.
  • the location of the transceiver corresponding to each of the at least two subcarriers in the signal sending device When the information is different from the location information of the signal transmitting device, the length of the time synchronization error between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the reference mobile terminal
  • S 2 is the transceiver corresponding to the second subcarrier and the Referring to the distance between the mobile terminals
  • C is the transmission speed of the reference signal
  • n 1 is the distance error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is on the second subcarrier The distance error caused by the noise of the transmitted reference signal.
  • the third aspect is a signal receiving device, where the signal receiving device is a mobile terminal or a reference node to be located, and the signal receiving device includes:
  • a receiving unit configured to receive configuration information sent by the signal sending device, if the signal receiving device is a mobile terminal to be located, the signal sending device is a reference node; if the signal receiving device is a reference node, the signal is The sending device is a mobile terminal to be located; the reference node is configured to locate the mobile terminal to be located; wherein the configuration information includes: reference signal configuration information set for each of the at least two subcarriers;
  • a determining unit configured to determine a time synchronization error TAE between the at least two subcarriers used by the signal transmitting device to transmit the reference signal
  • a generating unit configured to generate, according to the reference signal configuration information in the configuration information, a reference signal on each of the at least two subcarriers; and generate, according to the generated reference signal, and the determined TAE First aggregated reference signal;
  • a processing unit configured to: after the receiving unit receives a signal, match the signal with the first aggregated reference signal; determine the signal when the signal matches the first aggregated reference signal a second aggregation reference signal sent by the signal sending device, where the second aggregation reference signal is generated by the signal transmitting device performing carrier aggregation on a reference signal sent on each of the at least two subcarriers.
  • the receiving unit is specifically configured to:
  • the determining unit is specifically configured to:
  • the TAE corresponding to the stored signal transmitting device is used as the TAE.
  • the determining unit when the signal receiving device is a reference node, the determining unit further includes: before the TAE corresponding to the stored signal transmitting device, the determining unit further includes:
  • the determining unit determines the signal sending device The moment of the location information, when determining the TAE corresponding to the signaling device, specifically for:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the signal transmitting device, the transceiver corresponding to each subcarrier and the signal sending device the distance between;
  • the determining unit determines the location of the signaling device The moment of the information, when determining the TAE corresponding to the signal sending device, specifically for:
  • the transceiver corresponding to each of the at least two subcarriers in the signal receiving device When the location information is different from the location information of the signal receiving device, the length of the time synchronization error between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the signal sending device
  • S 2 is the transceiver corresponding to the second subcarrier and the
  • C is the transmission speed of the reference signal
  • n 1 is the distance estimation error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is the second subcarrier The distance estimation error caused by the noise of the reference signal transmitted.
  • any one of the first to fourth possible implementation manners of the third aspect in a fifth possible implementation manner of the third aspect, the generating unit, The reference signal, and the determined TAE, when the first aggregated reference signal is generated, specifically for:
  • a fourth aspect is a signaling device, where the signal sending device is a mobile terminal or a reference node to be located, and the signal sending device includes:
  • a sending unit configured to send configuration information to the signal receiving device, and the signal transmitting device is configured to transmit a time synchronization error TAE between the at least two subcarriers of the reference signal; and if the signal If the sending device is a mobile terminal to be located, the signal receiving device is a reference node; if the signal sending device is a reference node, the signal receiving device is a mobile terminal to be located; and the reference node is used to determine the pending Positioning by the mobile terminal; wherein the configuration information includes: reference signal configuration information set for each of the at least two subcarriers;
  • a processing unit configured to perform carrier aggregation on a reference signal sent on each of the at least two subcarriers to obtain an aggregated reference signal
  • the sending unit is further configured to send the aggregated reference signal to the signal receiving device.
  • the sending unit when the sending unit sends the configuration information to the signal receiving device, the sending unit is specifically configured to:
  • the configuration information is periodically transmitted to the signal receiving device on each of the at least two subcarriers.
  • the signal sending device further includes:
  • a determining unit configured to determine the TAE before the sending unit sends the TAE to the signal receiving device.
  • the determining unit when the signal sending device is a mobile terminal to be located, the determining unit is specifically configured to:
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • the determining unit is specifically configured to:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the reference mobile terminal, the transceiver corresponding to each subcarrier and the reference mobile terminal the distance between;
  • the determining unit is specifically configured to:
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • the location of the transceiver corresponding to each of the at least two subcarriers in the signal sending device When the information is different from the location information of the signal transmitting device, the length of the time synchronization error between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the reference mobile terminal
  • S 2 is the transceiver corresponding to the second subcarrier and the Referring to the distance between the mobile terminals
  • C is the transmission speed of the reference signal
  • n 1 is the distance error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is on the second subcarrier The distance error caused by the noise of the transmitted reference signal.
  • the signal receiving device may use a TAE between at least two subcarriers used by the signal sending device to transmit the reference signal, and the signal sending device.
  • a reference signal on each subcarrier is estimated to obtain an aggregated reference signal after the carrier is sent by the signal sending device, and after receiving a signal, whether the signal is matched according to whether the signal matches the estimated aggregated reference signal.
  • the aggregated reference signal sent by the signal sending device so that the signal receiving device can accurately determine whether the received signal is an aggregated reference signal, thereby accurately determining the transmission time of the aggregated reference signal, and finally obtaining the location information with higher accuracy.
  • FIG. 1 is a schematic diagram of a network architecture for positioning a mobile terminal according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a signal determining method according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a signal receiving device generating an aggregation reference signal according to an embodiment of the present disclosure
  • FIG. 4 is a flowchart of a signal determining method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a signal receiving device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a signal sending device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a signal receiving device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a signal sending device according to an embodiment of the present invention.
  • the embodiment of the invention provides a signal determining method and device, which are used to solve the problem that the signal receiving device existing in the prior art cannot accurately determine whether the received signal is an aggregated reference signal, resulting in a large error in the position information obtained by the positioning, and the positioning fails. problem.
  • the method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.
  • the signal receiving device generates a reference signal on each of the at least two subcarriers according to the configuration information sent by the signal sending device, in the process of transmitting the signal to the mobile terminal by using the carrier aggregation technology, where The at least two subcarriers are used by the signal sending device to transmit a reference signal, where the configuration information includes reference signal configuration information set for each of the at least two subcarriers; the signal receiving device is generated according to the The reference signal, and the TAE between the at least two subcarriers, generate a first aggregated reference signal; after receiving the signal, the signal receiving device matches the signal with the first aggregated reference signal, When the signal matches the first aggregated reference signal, determining that the signal is a second aggregated reference signal sent by the signal sending device, where the second aggregated reference signal is that the signal transmitting device A reference signal transmitted on each of the two subcarriers is generated after carrier aggregationThe signal receiving device may estimate, according to the TAE between the at least two subcarriers used by the signal
  • the reference signal is aggregated, and after receiving a signal, whether the signal is an aggregated reference signal sent by the signal sending device according to whether the signal matches the estimated aggregated reference signal, so that the signal receiving device can In order to accurately determine whether the received signal is an aggregated reference signal, the transmission time of the aggregated reference signal is accurately determined, and finally the position information with higher accuracy is obtained.
  • the embodiment of the present invention provides a signal determining method and device, which is applicable to a network architecture for transmitting a signal to a mobile terminal by using a carrier aggregation technology.
  • the network architecture includes: a mobile terminal to be located. MT, and at least three reference nodes configured for the mobile terminal to be located - reference node 1, reference node 2, and reference node 3, wherein the location information of each reference node is known.
  • the MT may be a handheld mobile device such as a mobile phone or a tablet computer, and may also be other mobile devices.
  • the present invention does not limit this.
  • the reference node 1, the reference node 2, and the reference node 3 may each be a base station such as a macro cell, a micro cell, or a pico cell, or an access point (AP), which is not limited by the present invention.
  • the steps of the positioning method include:
  • Step a1 The MT has a carrier aggregation function, and can synthesize reference signals on multiple carriers into one aggregated reference signal;
  • Step a2 The MT sends an aggregated reference signal to the reference node 1, the reference node 2, and the reference node 3, respectively.
  • Step a3 The reference node 1, the reference node 2, and the reference node 3 determine the transmission time of the aggregated reference signal after determining that the aggregated reference signal sent by the MT is received;
  • Step a4 the reference node 1, the reference node 2, and the reference node 3 may send the determined transmission time of the aggregated reference signal to the MT;
  • a transmission time difference of the aggregated reference signal of each two reference nodes according to a transmission time of the aggregated reference signal sent by each of the reference nodes determined by each reference node, and a transmission time difference of the aggregated reference signal of each of the two reference nodes and a transmission speed of the reference signal determine a distance difference between the reference node and the MT in each of the two reference nodes, that is, a distance between the reference node 1 and the MT and the The difference between the distances of the reference node 2 and the MT is referred to as a first distance difference, and the distance between the reference node 2 and the MT and the reference node 3 The difference between the distances to the MT is referred to as a second distance difference, and the difference between the distance from the reference node 1 to the MT and the distance from the reference node 3 to the MT is referred to as a third distance difference;
  • the MT may establish a first hyperbolic equation according to position information of
  • the network architecture may further include an Evolved Serving Mobile Location Center (E-SMLC), where in step a4, the reference node 1, the reference node 2, and the The reference node 3 may send the transmission time of the respective determined aggregated reference signal to the E-SMLC, and in a subsequent step, the E-SMLC adopts the same conventional algorithm as the MT, as described above, according to The transmission time of the aggregated reference signal sent by each of the reference nodes and the location information of each reference node determined by each reference node determines the location information of the MT, and details are not described herein again.
  • E-SMLC Evolved Serving Mobile Location Center
  • the steps of the positioning method include:
  • Step b1 The reference node 1, the reference node 2, and the reference node 3 all have a carrier aggregation function, and can synthesize reference signals on multiple carriers into one aggregated reference signal;
  • Step b2 the reference node 1, the reference node 2, and the reference node 3 respectively send an aggregated reference signal to the MT;
  • Step b3 After receiving any signal, the MT determines that the signal is an aggregated reference signal sent by the reference node 1, the reference node 2, and any one of the reference nodes 3, and determines the Aggregating a transmission time of the reference signal until determining a transmission time of the aggregated reference signal sent by the reference node 1, the reference node 2, and each of the reference nodes 3;
  • Step b4 Same as step a4, the MT may adopt a conventional algorithm, according to the determined transmission time of the aggregated reference signal sent by each reference node to the MT, and each reference The location information of the node is determined, and the location information of the MT is determined, and details are not described herein.
  • the network architecture further includes an E-SMLC
  • the MT may send each reference node to the MT.
  • the transmission time of the aggregated reference signal is sent to the E-SMLC, and the E-SMLC adopts the same conventional algorithm as the MT, according to the determined aggregated reference sent to the MT by each reference node.
  • the transmission time of the signal and the location information of each reference node determine the location information of the MT, and details are not described herein again.
  • a method for determining a signal according to an embodiment of the present invention is applicable to a signal receiving device in a network architecture (for example, the network architecture shown in FIG. 1) for transmitting a signal to a mobile terminal by using a carrier aggregation technology, as shown in FIG. 2,
  • the specific process of the method includes:
  • Step 201 The signal receiving device receives the configuration information sent by the signal sending device, and determines a TAE between the at least two subcarriers used by the signal sending device to transmit the reference signal.
  • the signal receiving device is a mobile terminal or a reference node to be located. And if the signal receiving device is a mobile terminal to be located, the signal sending device is a reference node; if the signal receiving device is a reference node, the signal sending device is a mobile terminal to be located; Positioning the mobile terminal to be located; wherein the configuration information includes: reference signal configuration information set for each of the at least two subcarriers.
  • the mobile terminal to be located When the UTDOA positioning method is used to locate the mobile terminal, the mobile terminal to be located sends an aggregation reference signal to the reference node. Therefore, the signal receiving device is the reference node, and the signal sending device is When the mobile terminal to be located is located by using the OTDOA positioning method in this embodiment, the reference node configured for the mobile terminal to be located sends an aggregation reference signal to the mobile terminal to be located, therefore, The signal receiving device is the mobile terminal to be located, and the signal sending device is the reference node.
  • the receiving, by the signal receiving device, the configuration information sent by the signal sending device includes:
  • the signal receiving device receives the configuration information periodically sent by the signal sending device on each of the at least two subcarriers.
  • the signal sending device Before the signal sending device sends the aggregated reference signal, it needs to be set to transmit the reference signal. At least two subcarriers of the number, and then periodically transmit, on each subcarrier, reference signal configuration information set for the subcarrier, the reference signal configuration information being used to notify the signal receiving device of the reference signal transmitted on the subcarrier Waveform and other information.
  • the signal receiving device determines the TAE, and includes the following two methods:
  • the first mode the signal receiving device receives the TAE sent by the signal sending device;
  • the second mode the signal receiving device uses the stored TAE of the signal sending device as the TAE.
  • the TAE corresponding to the signal sending device stored by the signal receiving device may be sent by the signal sending device to the signal receiving device or determined by the signal receiving device.
  • the signal receiving device when the signal receiving device is a reference node, the signal receiving device, before the TAE corresponding to the signal sending device that is stored, is further included as:
  • the signal receiving device determines a TAE corresponding to the signal transmitting device at a time when the location information of the signal transmitting device is determined, and stores the TAE.
  • the following two methods may be included:
  • the first mode when the location information of the transceiver corresponding to each of the at least two subcarriers in the signal receiving device is different from the location information of the signal receiving device, the signal receiving device determines Determining the TAE corresponding to the signal sending device at the moment of the location information of the signal transmitting device, including:
  • the signal receiving device receives, by a transceiver corresponding to each of the at least two subcarriers, a reference signal sent by the signal transmitting device on each of the at least two subcarriers;
  • the signal receiving device determines a transmission time of the reference signal transmitted on each subcarrier; and determines a transceiver corresponding to each subcarrier according to the location information of the transceiver corresponding to each subcarrier and the location information of the signal transmitting device. The distance between the signal transmitting devices;
  • the signal receiving device performs the following operations for each of the at least two subcarriers Make:
  • the signal receiving device determines a TAE corresponding to the signal transmitting device according to the determined length of time synchronization error between each two subcarriers.
  • the length of the time synchronization error between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the signal sending device
  • S 2 is the transceiver corresponding to the second subcarrier and the
  • C is the transmission speed of the reference signal
  • n 1 is the distance estimation error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is the second subcarrier The distance estimation error caused by the noise of the reference signal transmitted.
  • a second mode when the location information of the transceiver corresponding to each of the at least two subcarriers in the signal receiving device is the same as the location information of the signal receiving device, the signal receiving device determines Determining the TAE corresponding to the signal sending device at the moment of the location information of the signal transmitting device, including:
  • the signal receiving device receives a reference signal sent by the signal sending device on each of the at least two subcarriers
  • the signal receiving device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signal receiving device performs the following operations for each of the at least two subcarriers:
  • the signal receiving device determines a TAE corresponding to the signal transmitting device according to the determined length of time synchronization error between each two subcarriers.
  • the signal receiving device determines the TAE corresponding to the signal sending device according to the determined length of the time synchronization error between each two subcarriers, which may include multiple modes, and the present invention does not Qualifying:
  • the signal receiving device may use a time synchronization error length between every two subcarriers as a TAE corresponding to the signal sending device; the signal receiving device may also be between every two subcarriers determined
  • the length of the time synchronization error of the portion of the time synchronization error length is used as the TAE corresponding to the signal transmitting device, but the signal receiving device can infer the length of the time synchronization error between each two subcarriers according to the length of the time synchronization error of the portion. .
  • the signal receiving device may determine the subcarrier 1 and the subcarrier.
  • the time synchronization error length between two is TAE 1-2
  • the time synchronization error length between the subcarrier 1 and the subcarrier 3 is TAE 1-3
  • the time between the subcarrier 2 and the subcarrier 3 The synchronization error length is TAE 2-3
  • Step 202 The signal receiving device generates a reference signal on each of the at least two subcarriers according to the reference signal configuration information in the configuration information, and based on the generated reference signal, and the determined TAE, generating a first aggregated reference signal.
  • the signal receiving device generates a first aggregated reference signal based on the generated reference signal and the determined TAE, including:
  • the signal receiving device performs a synthesis process on the generated reference signal according to the TAE to generate the first aggregated reference signal.
  • the signal receiving device when at least two subcarriers used by the signal transmitting device for transmitting a reference signal include subcarrier 1, subcarrier 2, the signal receiving device according to the parameter in the configuration information Referring to the signal configuration information, the reference signal 1 on the subcarrier 1 and the reference signal 2 on the subcarrier 2 are generated, as shown in the left figure of the figure, the signal receiving device further determines the subcarrier 1 and the Describe the TAE between subcarriers 2.
  • the signal receiving device synthesizes the reference signal 1 and the reference signal 2 according to the TAE to generate a first aggregated reference signal, as shown in the right figure of the figure. For example, the signal receiving device performs corresponding delay processing on the reference signal 2 according to the TAE, and superimposes the reference signal 1 and the post-delay reference signal 2 to generate a first aggregated reference signal.
  • Step 203 After receiving the signal, the signal receiving device matches the signal with the first aggregated reference signal; and when the signal matches the first aggregated reference signal, determining that the signal is a second aggregation reference signal sent by the signal sending device, where the second aggregation reference signal is generated by the signal sending device performing carrier aggregation on a reference signal sent on each of the at least two subcarriers.
  • the signal receiving device matching the signal with the first aggregated reference signal may include:
  • the signal receiving device performs correlation processing on the signal and the first aggregated reference signal to generate a correlation spectrum; and in the correlation spectrum, matches the signal with the first aggregated reference signal.
  • the signal receiving device determines that the signal matches the first aggregated reference signal, and determines that the signal is a second aggregated reference signal, so that the signal receiving device may further determine The arrival time of the second aggregated reference signal.
  • the transmission time of the second aggregated reference signal is accurately determined according to the arrival time and the transmission time of the second aggregated reference signal, and finally the position information with higher precision is obtained.
  • the transmission time of the second aggregation reference signal may be carried in the configuration information sent by the signal sending device in step 203.
  • the signal receiving device is the reference node
  • the signal sending device is the mobile terminal to be located.
  • the reference is performed. Sending, by the node, the determined transmission time of the second aggregation reference signal to the to-be-located mobile terminal or the E-SMLC, and determining the to-be-located mobile terminal or the E-SMLC according to each reference node by using a conventional algorithm.
  • the mobile terminal to be located is directed to Determining the location information of the mobile terminal to be located, the transmission time of the second aggregation reference signal sent by each reference node, and the location information of each reference node;
  • the signal receiving device is the mobile terminal to be located, and the signal sending device is the reference node, then the to-be-positioned After the mobile terminal determines, according to the foregoing method, the transmission time of the second aggregation reference signal sent by each reference node to the to-be-located mobile terminal, the to-be-located mobile terminal may directly determine each reference node according to a conventional algorithm.
  • the location information of each reference node is known.
  • the location information of the transceiver corresponding to each of the at least two subcarriers in any one of the reference nodes is different from the location information of the reference node, Determining location information of the reference node according to location information of the transceiver, or presetting location information of the reference node.
  • the signal receiving device uses a reference on each subcarrier of the at least two subcarriers for transmitting the reference signal according to the generated signal transmitting device. a signal, and a TAE between the at least two subcarriers, generating a first aggregated reference signal; and after receiving a signal that matches the first aggregated reference signal, determining that the signal is sent by the signal transmitting device The second aggregated reference signal.
  • the signal receiving device can accurately determine whether the received signal is the second aggregated reference signal sent by the signal sending device, thereby accurately determining the transmission time of the second aggregated reference signal, and improving the transmission time precision of the second aggregated reference signal. Finally, the location information with higher accuracy is obtained.
  • the embodiment of the present invention further provides a signal determining method, which is applicable to a network architecture (for example, the network architecture shown in FIG. 1) for transmitting a signal to a mobile terminal by using a carrier aggregation technology.
  • a network architecture for example, the network architecture shown in FIG. 1
  • No. Sending device as shown in Figure 4, the specific process of the method includes:
  • Step 401 The signal sending device sends configuration information to the signal receiving device, and the signal sending device is configured to transmit a TAE between at least two subcarriers of the reference signal; the signal sending device is a mobile terminal or a reference node to be located, and if The signal sending device is a mobile terminal to be located, and the signal receiving device is a reference node; if the signal sending device is a reference node, the signal receiving device is a mobile terminal to be located; The mobile terminal to be located performs positioning; wherein the configuration information includes: reference signal configuration information set for each of the at least two subcarriers.
  • the sending, by the signaling device, the configuration information to the signal receiving device includes:
  • the signal transmitting device periodically transmits the configuration information to the signal receiving device on each of the at least two subcarriers.
  • the signal sending device Before the signal sending device sends the aggregated reference signal, it is required to set at least two subcarriers for transmitting the reference signal, and then periodically transmit reference signal configuration information set for the subcarrier on each subcarrier, the reference signal configuration information. And a message for notifying a waveform of a reference signal transmitted by the signal receiving device on the subcarrier.
  • the method before the signaling device sends the TAE to the signal receiving device, the method further includes:
  • the signal transmitting device determines the TAE.
  • the signal sending device determines the TAE, including:
  • the signal transmitting device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal transmitting device determines the TAE according to the determined length of time synchronization error between every two subcarriers.
  • the determining, by the mobile terminal to be located, the node may be any reference node or other node, which is not limited by the disclosure.
  • the signaling device determines the TAE, including:
  • the signal transmitting device determines a transmission time of the reference signal transmitted on each subcarrier; and determines a transceiver corresponding to each subcarrier according to the location information of the transceiver corresponding to each subcarrier and the location information of the reference mobile terminal The distance between the reference mobile terminals;
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal sending device determines the TAE according to the determined length of time synchronization error between every two subcarriers
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the reference mobile terminal
  • S 2 is the transceiver corresponding to the second subcarrier and the Referring to the distance between the mobile terminals
  • C is the transmission speed of the reference signal
  • n 1 is the distance error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is on the second subcarrier The distance error caused by the noise of the transmitted reference signal.
  • the signaling device determines the TAE, including:
  • the signal transmitting device determines a transmission time of a reference signal transmitted on each subcarrier
  • the signaling device performs the following operations for each of the at least two subcarriers:
  • the signal transmitting device determines the TAE according to the determined length of time synchronization error between every two subcarriers.
  • step 401 when the signal sending device determines the TAE, in step 201 of the foregoing embodiment, determining a TAE corresponding to the signal sending device according to the determined length of time synchronization error between each two subcarriers.
  • the methods are the same, and all of them include multiple ways, and are not described here.
  • Step 402 The signal sending device performs carrier aggregation on a reference signal sent on each of the at least two subcarriers to obtain an aggregated reference signal.
  • the signal transmitting device obtains an aggregated reference signal by performing carrier aggregation on a plurality of reference signals, so as to improve the bandwidth of the signal and improve the accuracy of the positioning.
  • Step 403 The signal sending device sends the aggregation reference signal to the signal receiving device.
  • the signal transmitting device in the process of transmitting a signal to a mobile terminal by using a carrier aggregation technology, sends a TAE between at least two subcarriers for transmitting a reference signal. Sending to the signal receiving device, causing the signal receiving device to generate a first aggregated reference signal according to a reference signal on each of the at least two subcarriers and a TAE between the at least two subcarriers; After the first aggregated reference signal matches a signal, the signal is determined to be a second aggregated reference signal sent by the signal transmitting device.
  • the signal receiving device can accurately determine whether the received signal is the second aggregated reference signal sent by the signal sending device, thereby accurately determining the transmission time of the second aggregated reference signal, and improving the transmission time precision of the second aggregated reference signal. Finally, the location information with higher accuracy is obtained.
  • the embodiment of the present invention further provides a signal receiving device, where the signal receiving device is a mobile terminal or a reference node to be located.
  • the signal receiving device 500 includes: a receiving unit 501, determining Unit 502, generating unit 503, and processing unit 504, wherein
  • the receiving unit 501 is configured to receive configuration information sent by the signal sending device. If the signal receiving device 500 is a mobile terminal to be located, the signal sending device is a reference node; if the signal receiving device 500 is a reference node, The signal transmitting device is a mobile terminal to be located; the reference node is configured to locate the mobile terminal to be located; wherein the configuration information includes: a reference signal set for each of the at least two subcarriers Configuration information;
  • a determining unit 502 configured to determine a time synchronization error TAE between the at least two subcarriers used by the signal sending device to transmit a reference signal;
  • a generating unit 503 configured to generate, according to the reference signal configuration information in the configuration information, a reference signal on each of the at least two subcarriers; and based on the generated reference signal, and the determined TAE, Generating a first aggregated reference signal;
  • the processing unit 504 is configured to: after the receiving unit 501 receives a signal, match the signal with the first aggregated reference signal; and when the signal matches the first aggregated reference signal, determine The signal is a second aggregation reference signal sent by the signal sending device, and the second aggregation reference signal is generated by the signal sending device by performing carrier aggregation on a reference signal sent on each of the at least two subcarriers. of.
  • the receiving unit 501 is specifically configured to:
  • the determining unit 502 is specifically configured to:
  • the TAE corresponding to the stored signal transmitting device is used as the TAE.
  • the determining unit 502 before the TAE corresponding to the stored signal sending device, before the TAE further includes:
  • the determining unit 502 determines the When the location information of the signal transmitting device is determined, when the TAE corresponding to the signal sending device is determined, it is specifically used to:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the signal transmitting device, the transceiver corresponding to each subcarrier and the signal sending device the distance between;
  • the determining unit 502 determines that the signal is sent. Determining the signal transmitting device at the moment of the location information of the device Corresponding TAE, specifically used to:
  • the time between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the signal sending device
  • S 2 is the transceiver corresponding to the second subcarrier and the
  • C is the transmission speed of the reference signal
  • n 1 is the distance estimation error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is the second subcarrier The distance estimation error caused by the noise of the reference signal transmitted.
  • the generating unit 503 is configured to: when generating the first aggregated reference signal based on the generated reference signal and the determined TAE, specifically:
  • the embodiment of the present invention further provides a signal sending device, where the signal sending device is a mobile terminal or a reference node to be located.
  • the signal sending device 600 is provided.
  • the method includes: a sending unit 601, a processing unit 602, where
  • the sending unit 601 is configured to send configuration information to the signal receiving device, and the signal sending device 600 is configured to transmit a time synchronization error TAE between the at least two subcarriers of the reference signal; and if the signal sending device 600 is to be positioned to move And the signal receiving device is a reference node; if the signal sending device 600 is a reference node, the signal receiving device is a mobile terminal to be located; and the reference node is used to locate the mobile terminal to be located.
  • the configuration information includes: reference signal configuration information set for each of the at least two subcarriers;
  • the processing unit 602 is configured to perform carrier aggregation on a reference signal sent on each of the at least two subcarriers to obtain an aggregated reference signal.
  • the sending unit 601 is further configured to send the aggregated reference signal to the signal receiving device.
  • the sending unit 601 when the sending unit sends the configuration information to the signal receiving device, the sending unit 601 is specifically configured to:
  • the configuration information is periodically transmitted to the signal receiving device on each of the at least two subcarriers.
  • the signaling device 600 further includes:
  • the determining unit 603 is configured to determine the TAE before the sending unit 601 sends the TAE to the signal receiving device.
  • the determining unit 603 is specifically configured to:
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • the determining unit 603 is specifically configured to:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the reference mobile terminal, the transceiver corresponding to each subcarrier and the reference mobile terminal the distance between;
  • the determining unit 603 is specifically configured to:
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • a time synchronization error between the two subcarriers meets the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the reference mobile terminal
  • S 2 is the transceiver corresponding to the second subcarrier and the Referring to the distance between the mobile terminals
  • C is the transmission speed of the reference signal
  • n 1 is the distance error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is on the second subcarrier The distance error caused by the noise of the transmitted reference signal.
  • the present invention further provides a signal receiving device.
  • the signal receiving device may adopt the method provided by the embodiment corresponding to FIG. 2, and may be the same device as the signal receiving device shown in FIG. 5.
  • the signal receiving device 700 is a mobile terminal or a reference node to be located. Referring to FIG. 7, the signal receiving device 700 includes a transceiver 701, a processor 702, a bus 703, and a memory 704, where:
  • the transceiver 701, the processor 702, and the memory 704 are connected to each other through a bus 703.
  • the bus 703 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 701 is configured to communicate with other devices, such as the signal transmitting device, such as configuration information sent by the signal transmitting device, an aggregated reference signal, and the like.
  • the processor 702 is configured to implement the signal determining method shown in FIG. 2 of the embodiment of the present invention, including:
  • the processor 702 receives the configuration information sent by the signaling device, including:
  • the processor 702 determines the TAE, including:
  • the TAE corresponding to the stored signal transmitting device is used as the TAE.
  • the processor 702 further includes: before the TAE corresponding to the stored signal sending device, the processor 702:
  • the processor 702 determines the location when the location information of the transceiver corresponding to each of the at least two subcarriers in the signal receiving device 700 is different from the location information of the signal receiving device 700. Determining the TAE corresponding to the signal sending device at the moment of transmitting the location information of the device, including:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the signal transmitting device, the transceiver corresponding to each subcarrier and the signal sending device the distance between;
  • the processor 702 determines that the signal is sent.
  • the moment of the location information of the device, determining the TAE corresponding to the signaling device including:
  • the time between the two subcarriers satisfies the following formula:
  • TAE 1_2 is a time synchronization error length between the two subcarriers
  • TOA 2 is a transmission time of a reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is a second sub of the two subcarriers
  • S 1 is the distance between the transceiver corresponding to the first subcarrier and the signal sending device
  • S 2 is the transceiver corresponding to the second subcarrier and the distance between the signal transmitting apparatus
  • C is the speed reference signal transmitted from the noise reference signal
  • n 1 is transmitted on the first subcarrier estimation error caused
  • n 2 is the second sub-carrier
  • the processor 702 generates a first aggregated reference signal, based on the generated reference signal and the determined TAE, including:
  • the signal receiving device 700 further includes a memory 704 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 704 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 702 executes the application stored in the memory 704 to implement the above signal determination method.
  • the present invention further provides a signal transmitting device, which may adopt the method provided by the embodiment corresponding to FIG. 4, and may be the same device as the signal transmitting device shown in FIG. 6.
  • the signal sending device 800 is a mobile terminal or a reference node to be located. Referring to FIG. 8, the signal sending device 800 includes a transceiver 801, a processor 802, a bus 803, and a memory 804, where:
  • the transceiver 801, the processor 802, and the memory 804 are connected to each other through a bus 803.
  • the bus 803 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. Wait.
  • PCI peripheral component interconnect
  • EISA extended industry standard architecture
  • the bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 8, but it does not mean that there is only one bus or one type of bus.
  • the transceiver 801 is configured to communicate with other devices, such as the signal receiving device, etc., such as transmitting configuration information to the signal receiving device, the TAE between the at least two subcarriers used by the signal transmitting device 800 for transmitting the reference signal, and the aggregation reference. Signals, etc.
  • the processor 802 is used to implement the signal determining method shown in FIG. 4 of the embodiment of the present invention, including:
  • the signal transmitting device 800 is configured to transmit a TAE between at least two subcarriers of the reference signal; if the signal transmitting device 800 is a mobile terminal to be located, the signal receiving device is a reference a node; if the signal sending device 800 is a reference node, the signal receiving device is a mobile terminal to be located; the reference node is used to locate the mobile terminal to be located; wherein the configuration information includes: Reference signal configuration information set for each of the at least two subcarriers;
  • the aggregated reference signal is sent to the signal receiving device.
  • the sending, by the processor 802, the configuration information to the signal receiving device includes:
  • the configuration information is periodically transmitted to the signal receiving device on each of the at least two subcarriers.
  • the method before the sending, by the processor 802, the TAE to the signal receiving device, the method further includes:
  • the processor 802 determines the TAE, including:
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • the processor 802 determines the TAE, including:
  • Determining a transmission time of the reference signal transmitted on each subcarrier and determining, according to the location information of the transceiver corresponding to each subcarrier, the location information of the reference mobile terminal, the transceiver corresponding to each subcarrier and the reference mobile terminal the distance between;
  • the processor 802 determines the TAE, including :
  • the TAE is determined based on the determined length of time synchronization error between every two subcarriers.
  • the time between the two subcarriers satisfies the following formula:
  • TAE 1_2 is the time synchronization error length between the two subcarriers
  • TOA 2 is the transmission time of the reference signal transmitted on the first subcarrier of the two subcarriers
  • TOA 1 is the second subcarrier of the two subcarriers.
  • the transmission time of the reference signal transmitted on the carrier S 1 is the distance between the transceiver corresponding to the first subcarrier and the reference mobile terminal
  • S 2 is the transceiver corresponding to the second subcarrier and the Referring to the distance between the mobile terminals
  • C is the transmission speed of the reference signal
  • n 1 is the distance error caused by the noise of the reference signal transmitted on the first subcarrier
  • n 2 is on the second subcarrier The distance error caused by the noise of the transmitted reference signal.
  • the signal transmitting device 800 also includes a memory 804 for storing programs and the like.
  • the program can include program code, the program code including computer operating instructions.
  • the memory 804 may include a random access memory (RAM), and may also include a non-volatile memory such as at least one disk storage.
  • the processor 802 executes the application stored in the memory 804 to implement the above signal determination method.
  • the signal receiving device in a process of transmitting a signal to a mobile terminal by using a carrier aggregation technology, may be configured to transmit a reference signal according to the signal transmitting device.
  • a TAE between at least two subcarriers, and a reference signal of the signal transmitting device on each subcarrier, estimating an aggregated reference signal after the carrier aggregation sent by the signal transmitting device, and after receiving a signal, according to Whether the signal matches the estimated aggregated reference signal, determining whether the signal is an aggregated reference signal sent by the signal sending device, so that the signal receiving device can accurately determine whether the received signal is an aggregated reference signal, thereby accurately determining the aggregated reference signal.
  • the transmission time finally results in higher accuracy position information.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It should be understood that the flow chart can be implemented by computer program instructions And/or a combination of the processes and/or blocks in the block diagrams, and the flowcharts and/or blocks in the flowcharts. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本发明提供了一种信号确定方法及装置,用以解决传统的定位方法存在的信号接收设备无法准确判断接收的信号是否为聚合参考信号,导致定位得到的位置信息误差较大,定位失败的问题。该方法为:信号接收设备可以根据信号发送设备用于传输参考信号的至少两个子载波间的TAE,以及所述信号发送设备在每个子载波上的参考信号,估计得到所述信号发送设备发送的载波聚合后的聚合参考信号,并在接收到一信号后,根据该信号与估计的聚合参考信号是否匹配,确定该信号是否为所述信号发送设备发送的聚合参考信号,这样,信号接收设备可以准确判断接收的信号是否为聚合参考信号,进而准确确定聚合参考信号的传输时间,最终得到精确度较高的位置信息。

Description

一种信号确定方法及装置 技术领域
本发明涉及通信技术领域,尤其涉及一种信号确定方法及装置。
背景技术
随着通信业务的发展,定位业务作为移动通信和个人通信服务中的不可或缺的一部分,具有重要的实际意义。定位业务是通过电信移动运营商的网络获取移动终端的位置信息(如经纬度坐标信息),并在电子地图平台的支持下,为用户提供相应服务的一种增值业务。
到达时间差(Time Difference Of Arrival,TDOA)技术是当前常用的定位技术,其原理为,在对一个移动终端进行定位时,可以将三个或三个以上网络节点(如基站等)作为参考节点,其中,每个参考节点的位置信息是已知的;并在所述移动终端分别向每个参考节点发送上行的探测参考信号(Sounding Reference Signal,SRS)时,根据在不同参考节点上所述SRS的TDOA,确定所述移动终端的位置;或者在每个参考节点向所述移动终端发送下行的定位参考信号(Positioning Reference Signal,PSR)探测信号时,根据在所述移动终端上所述PSR的TDOA,确定所述移动终端的位置。其中,根据上行信号的TDOA实现定位的方法,又称为上行信号到达时间差(Uplink Time Difference Of Arrival,UTDOA)定位方法,根据下行信号的TDOA实现定位的方法,又称为观察到达时间差(Observed Time Difference Of Arrival,OTDOA)定位方法。
然而,根据信号的TDOA得到位置信息的精度与该信号的带宽成反比关系,例如超宽带系统信号脉冲宽度在纳秒级,带宽可以达到几千兆赫兹(GHz),因此得到的位置信息与实际的位置信息的误差处于厘米级,然而,在当前通信系统中的用于定位的PSR和SRS的带宽为20兆赫兹(MHz),带宽的有限导致定位得到的位置信息误差较大,精确度较低。
传统的,可以通过载波聚合技术发送信号,提高信号的带宽,然而,将多个信号经过载波聚合后,生成的聚合参考信号与聚合前的信号相比,波形发生较大变化,因此,信号接收设备无法准确判断接收的信号是否为该聚合参考信号,导致确定聚合参考信号的传输时间时,产生较大误差,最终导致定位得到的位置信息误差较大,定位失败。
发明内容
本发明实施例提供了一种信号确定方法及装置,用以解决传统的定位方法存在的信号接收设备无法准确判断接收的信号是否为聚合参考信号,导致定位得到的位置信息误差较大,定位失败的问题。
第一方面,一种信号确定方法,包括:
信号接收设备接收信号发送设备发送的配置信息,以及确定所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差(Time Alignment Error,TAE);所述信号接收设备为待定位移动终端或参考节点,且若所述信号接收设备为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
所述信号接收设备根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号;
所述信号接收设备接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
结合第一方面,在第一方面的第一种可能的实现方式中,所述信号接收 设备接收所述信号发送设备发送的所述配置信息,包括:
所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
结合第一方面或第一方面的第一种可能的实现方式,在第一方面的第二种可能的实现方式中,所述信号接收设备确定所述TAE,包括:
所述信号接收设备接收所述信号发送设备发送的所述TAE;或者
所述信号接收设备将存储的所述信号发送设备对应的TAE,作为所述TAE。
结合第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现方式中,当所述信号接收设备为参考节点时,所述信号接收设备在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
其中,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
所述信号接收设备通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波 间的时间同步误差长度;
所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
或者
在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息相同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;
所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
结合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,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000001
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所 述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
结合第一方面、第一方面的第一种至第四种可能的实现方式中任一项,在第一方面的第五种可能的实现方式中,所述信号接收设备基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号,包括:
所述信号接收设备根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
第二方面,一种信号确定方法,包括:
信号发送设备向信号接收设备发送配置信息,以及所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;所述信号发送设备为待定位移动终端或参考节点,且若所述信号发送设备为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
所述信号发送设备将所述聚合参考信号发送至所述信号接收设备。
结合第二方面,在第二方面的第一种可能的实现方式中,所述信号发送设备向所述信号接收设备发送所述配置信息,包括:
所述信号发送设备在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
结合第二方面或第二方面的第一种可能的实现方式,在第二方面的第二种可能的实现方式中,在所述信号发送设备向所述信号接收设备发送所述TAE之前,还包括:
所述信号发送设备确定所述TAE。
结合第二方面第二种可能的实现方式,在第二方面的第三种可能的实现方式中,当所述信号发送设备为待定位移动终端时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波向一节点发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
结合第二方面第二种可能的实现方式,在第二方面的第四种可能的实现方式中,当所述信号发送设备为参考节点时,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
或者
在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息相同时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
结合第二方面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,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000002
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送 的参考信号的噪声带来的距离误差。
第三方面,一种信号接收设备,所述信号接收设备为待定位移动终端或参考节点,所述信号接收设备包括:
接收单元,用于接收信号发送设备发送的配置信息,若所述信号接收设备为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
确定单元,用于确定所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;
生成单元,用于根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号;
处理单元,用于在所述接收单元接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
结合第三方面,在第三方面的第一种可能的实现方式中,所述接收单元,具体用于:
接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
结合第三方面或第三方面的第一种可能的实现方式,在第三方面的第二种可能的实现方式中,所述确定单元,具体用于:
确定所述接收单元接收所述信号发送设备发送的所述TAE;或者
将存储的所述信号发送设备对应的TAE,作为所述TAE。
结合第三方面的第二种可能的实现方式,在第三方面的第三种可能的实 现方式中,当所述信号接收设备为参考节点时,所述确定单元在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
其中,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,所述确定单元在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE时,具体用于:
通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
或者
在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息相同时,所述确定单元在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE时,具体用于:
接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
结合第三方面的第三种可能的实现方式,在第三方面的第四种可能的实现方式中,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000003
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
结合第三方面、第三方面的第一种至第四种可能的实现方式中任一项,在第三方面的第五种可能的实现方式中,所述生成单元,在基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号时,具体用于:
根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
第四方面,一种信号发送设备,所述信号发送设备为待定位移动终端或参考节点,所述信号发送设备包括:
发送单元,用于向信号接收设备发送配置信息,以及所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;且若所述信号 发送设备为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
处理单元,用于将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
所述发送单元还用于将所述聚合参考信号发送至所述信号接收设备。
结合第四方面,在第四方面的第一种可能的实现方式中,所述发送单元在向所述信号接收设备发送所述配置信息时,具体用于:
在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
结合第四方面或第四方面的第一种可能的实现方式,在第四方面的第二种可能的实现方式中,所述信号发送设备还包括:
确定单元,用于在所述发送单元向所述信号接收设备发送所述TAE之前,确定所述TAE。
结合第四方面第二种可能的实现方式,在第四方面的第三种可能的实现方式中,当所述信号发送设备为待定位移动终端时,所述确定单元,具体用于:
通过所述至少两个子载波中每个子载波向一节点发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
结合第四方面第二种可能的实现方式,在第四方面的第四种可能的实现方式中,当所述信号发送设备为参考节点时,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备 的位置信息不同时,所述确定单元,具体用于:
通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
或者
在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息相同时,所述确定单元,具体用于:
通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
结合第四方面第四种可能的实现方式,在第四方面的第五种可能的实现方式中,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000004
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
本发明实施例中,在通过载波聚合技术发送信号对移动终端进行定位的过程中,信号接收设备可以根据信号发送设备用于传输参考信号的至少两个子载波间的TAE,以及所述信号发送设备在每个子载波上的参考信号,估计得到所述信号发送设备发送的载波聚合后的聚合参考信号,并在接收到一信号后,根据该信号与估计的聚合参考信号是否匹配,确定该信号是否为所述信号发送设备发送的聚合参考信号,这样,信号接收设备可以准确判断接收的信号是否为聚合参考信号,进而准确确定聚合参考信号的传输时间,最终得到精确度较高的位置信息。
附图说明
图1为本发明实施例提供的一种对移动终端进行定位的网络架构示意图;
图2为本发明实施例提供的一种信号确定方法的流程图;
图3为本发明实施例提供的信号接收设备生成聚合参考信号的示意图;
图4为本发明实施例提供的一种信号确定方法的流程图;
图5为本发明实施例提供的一种信号接收设备的结构示意图;
图6为本发明实施例提供的一种信号发送设备的结构示意图;
图7为本发明实施例提供的一种信号接收设备的结构示意图;
图8为本发明实施例提供的一种信号发送设备的结构示意图。
具体实施方式
为了使本发明的目的、技术方案和优点更加清楚,下面将结合附图对本发明作进一步地详细描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例,都属于本发明保护的范围。
本发明实施例提供一种信号确定方法及装置,用以解决现有技术中存在的信号接收设备无法准确判断接收的信号是否为聚合参考信号,导致定位得到的位置信息误差较大,定位失败的问题。其中,方法和装置是基于同一发明构思的,由于方法及装置解决问题的原理相似,因此装置与方法的实施可以相互参见,重复之处不再赘述。
采用本发明技术方案,在通过载波聚合技术发送信号对移动终端进行定位的过程中,信号接收设备根据信号发送设备发送的配置信息,生成至少两个子载波中每个子载波上的参考信号,其中,所述至少两个子载波为所述信号发送设备用于传输参考信号的,所述配置信息包括针对所述至少两个子载波中每个子载波设置的参考信号配置信息;所述信号接收设备根据生成的所述参考信号,以及所述至少两个子载波间的TAE,生成第一聚合参考信号;所述信号接收设备在接收到一信号后,对所述信号与所述第一聚合参考信号进行匹配,当所述信号与所述第一聚合参考信号匹配,则确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。所述信号接收设备可以根据所述信号发送设备用于传输参考信号的至少两个子载波间的TAE,以及所述信号发送设备在每个子载波上的参考信号,估计得到所述信号发送设备发送的载波聚合后的聚合参考信号,并在接收到一信号后,根据该信号与估计的聚合参考信号是否匹配,确定该信号是否为所述信号发送设备发送的聚合参考信号,这样,信号接收设备可 以准确判断接收的信号是否为聚合参考信号,进而准确确定聚合参考信号的传输时间,最终得到精确度较高的位置信息。
本发明实施例提供了一种信号确定方法及装置,适用于通过载波聚合技术发送信号对移动终端进行定位的网络架构,参阅图1所示,其中,所述网络架构中包括:待定位移动终端MT,以及为所述待定位移动终端配置的至少三个参考节点——参考节点1,参考节点2,以及参考节点3,其中每个参考节点的位置信息均是已知的。
其中,所述MT可以为手机、平板电脑等手持移动设备,还可以为其他移动设备,本发明对此不做限定。参考节点1、参考节点2和参考节点3均可以为宏小区、微小区或微微小区等的基站,或接入点(Access Point,AP),本发明也对此不做限定。
在该网络架构中采用UTDOA定位方法时,该定位方法的步骤包括:
步骤a1:所述MT具备载波聚合功能,可以将多个载波上的参考信号合成为一个聚合参考信号;
步骤a2:所述MT分别向所述参考节点1、所述参考节点2以及所述参考节点3发送聚合参考信号;
步骤a3:所述参考节点1、所述参考节点2以及所述参考节点3在确定接收到所述MT发送的所述聚合参考信号后,确定所述聚合参考信号的传输时间;
步骤a4:可选的,所述参考节点1、所述参考节点2以及所述参考节点3可以将各自确定的所述聚合参考信号的传输时间发送给所述MT;
所述MT采用传统的算法,根据每个参考节点确定的所述MT向每个参考节点发送的所述聚合参考信号的传输时间,确定每两个参考节点的聚合参考信号的传输时间差,并将每两个参考节点的聚合参考信号的传输时间差与参考信号的传输速度确定每两个参考节点中参考节点到所述MT的距离差,即所述参考节点1到所述MT的距离与所述参考节点2到所述MT的距离之差,称为第一距离差,所述参考节点2到所述MT的距离与所述参考节点3 到所述MT的距离之差,称为第二距离差,以及所述参考节点1到所述MT的距离与所述参考节点3到所述MT的距离之差,称为第三距离差;最后,如图所示,所述MT可以根据所述参考节点1和所述参考节点2的位置信息,以及第一距离差,建立第一双曲线方程;根据所述参考节点2和所述参考节点3的位置信息,以及第二距离差,建立第二双曲线方程;根据所述参考节点1和所述参考节点3的位置信息,以及第三距离差,建立第三双曲线方程;所述MT确定所述第一双曲线方程、所述第二双曲线方程以及所述第三双曲线方程的交点,该交点的位置信息即为所述MT的位置信息;
可选的,所述网络架构中还可以包括演进的服务移动定位中心(Evolved Serving Mobile Location Center,E-SMLC),那么在步骤a4中,所述参考节点1、所述参考节点2以及所述参考节点3可以将各自确定的所述聚合参考信号的传输时间发送给所述E-SMLC,在后续步骤中,所述E-SMLC采用与所述MT相同的传统的算法,同上所述,根据每个参考节点确定的所述MT向每个参考节点发送的所述聚合参考信号的传输时间、以及每个参考节点的位置信息,确定所述MT的位置信息,此处不再赘述。
在该网络架构中采用OTDOA定位方法时,该定位方法的步骤包括:
步骤b1:所述参考节点1、所述参考节点2以及所述参考节点3均具备载波聚合功能,可以将多个载波上的参考信号合成为一个聚合参考信号;
步骤b2:所述参考节点1、所述参考节点2以及所述参考节点3分别向所述MT发送聚合参考信号;
步骤b3:所述MT在接收到任意一个信号后,确定该信号是所述参考节点1、所述参考节点2以及所述参考节点3中任意一个参考节点发送的聚合参考信号后,确定所述聚合参考信号的传输时间,直至确定所述参考节点1、所述参考节点2以及所述参考节点3中每个参考节点发送的聚合参考信号的传输时间;
步骤b4:与步骤a4相同,所述MT可以采用传统的算法,根据确定的每个参考节点向所述MT发送的所述聚合参考信号的传输时间、以及每个参考 节点的位置信息,确定所述MT的位置信息,此处不再赘述;可选的,在所述网络架构中还包括E-SMLC时,所述MT可以将每个参考节点向所述MT发送的所述聚合参考信号的传输时间发送给所述E-SMLC,所述E-SMLC采用与所述MT相同的传统的算法,根据确定的每个参考节点向所述MT发送的所述聚合参考信号的传输时间、以及每个参考节点的位置信息,确定所述MT的位置信息,此处不再赘述。
本发明实施例提供的一种信号确定方法,适用于通过载波聚合技术发送信号对移动终端进行定位的网络架构(例如图1所示的网络架构)中的信号接收设备,参阅图2所示,该方法的具体流程包括:
步骤201:信号接收设备接收信号发送设备发送的配置信息,以及确定所述信号发送设备用于传输参考信号的至少两个子载波间的TAE;所述信号接收设备为待定位移动终端或参考节点,且若所述信号接收设备为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息。
在本实施例采用UTDOA定位方法对待定位移动终端进行定位时,所述待定位移动终端向参考节点发送聚合参考信号,因此,所述信号接收设备为所述参考节点,所述信号发送设备为所述待定位移动终端;在本实施例采用OTDOA定位方法对所述待定位移动终端进行定位时,为所述待定位移动终端配置的参考节点向所述待定位移动终端发送聚合参考信号,因此,所述信号接收设备为所述待定位移动终端,所述信号发送设备为所述参考节点。
可选的,所述信号接收设备接收所述信号发送设备发送的所述配置信息,包括:
所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
在所述信号发送设备发送聚合参考信号之前,需要设置用于传输参考信 号的至少两个子载波,然后在每个子载波上周期性发送针对该子载波设置的参考信号配置信息,该参考信号配置信息用于通知所述信号接收设备在该子载波上发送的参考信号的波形等信息。
可选的,所述信号接收设备确定所述TAE,包括以下两种方式:
第一种方式:所述信号接收设备接收所述信号发送设备发送的所述TAE;
第二种方式:所述信号接收设备将存储的所述信号发送设备对应的TAE,作为所述TAE。
在第二种方式中,所述信号接收设备存储的所述信号发送设备对应的TAE,可以为所述信信号发送设备之前发送给所述信号接收设备的,或者所述信号接收设备确定的。
可选的,当所述信号接收设备为参考节点时,所述信号接收设备在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE。
在执行上述步骤中,确定所述信号发送设备对应的TAE时,可选的,可以包括以下两种方式:
第一种方式:在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
所述信号接收设备通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操 作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
可选的,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000005
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
第二种方式:在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息相同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;
所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
在以上两种方式中,具体的,所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE,可以包括多种方式,本发明对此不做限定:可选的,所述信号接收设备可以将每两个子载波间的时间同步误差长度,作为所述信号发送设备对应的TAE;所述信号接收设备还可以在确定的每两个子载波间的时间同步误差长度中部分的时间同步误差长度作为所述信号发送设备对应的TAE,但是,所述信号接收设备可以根据该部分的时间同步误差长度推断出每两个子载波间的时间同步误差长度。
例如,当所述信号发送设备用于传输参考信号的至少两个子载波包括子载波1、子载波2,以及子载波3时,所述信号接收设备可以确定所述子载波1和所述子载波2间的时间同步误差长度为TAE1-2,所述子载波1和所述子载波3间的时间同步误差长度为TAE1-3,所述子载波2和所述子载波3间的时间同步误差长度为TAE2-3,那么,所述信号接收设备可以将TAE1-2、TAE1-3和TAE2-3作为所述信号发送设备对应的TAE;所述信号接收设备也可以将TAE1-2和TAE1-3作为所述信号发送设备对应的TAE;所述信号接收设备还可以将TAE1-2和TAE2-3作为所述信号发送设备对应的TAE……
步骤202:所述信号接收设备根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号。
可选的,所述信号接收设备基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号,包括:
所述信号接收设备根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
例如,图3所示,当所述信号发送设备用于传输参考信号的至少两个子载波包括子载波1、子载波2时,所述信号接收设备根据所述配置信息中的参 考信号配置信息,生成所述子载波1上的参考信号1和所述子载波2上的参考信号2,如图中左图所示,所述信号接收设备还确定所述子载波1和所述子载波2间的TAE。所述信号接收设备根据所述TAE,将所述参考信号1和所述参考信号2合成处理,生成第一聚合参考信号,如图中右图所示。例如所述信号接收设备根据所述TAE,对参考信号2进行相应的时延处理,并对参考信号1和时延后参考信号2,进行叠加,生成第一聚合参考信号。
步骤203:所述信号接收设备接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
所述信号接收设备对所述信号与所述第一聚合参考信号进行匹配,可以包括:
所述信号接收设备对所述信号和所述第一聚合参考信号进行相关处理,生成相关谱;并在所述相关谱中,将所述信号与所述第一聚合参考信号进行匹配。
在步骤203中,所述信号接收设备在接收到所述信号后,确定所述信号与所述第一聚合参考信号进匹配时,确定所述信号为第二聚合参考信号,这样,可以进而确定第二聚合参考信号的到达时间。在根据第二聚合参考信号的到达时间和发送时间,准确地确定第二聚合参考信号的传输时间,最终得到精度较高的位置信息。其中,所述第二聚合参考信号的传输时间,可以在步骤203中,所述信号发送设备发送的配置信息中携带。
在本实施例采用UTDOA定位方法对待定位移动终端进行定位时,所述信号接收设备为所述参考节点,所述信号发送设备为所述待定位移动终端,那么,在步骤203后,所述参考节点将确定的所述第二聚合参考信号的传输时间发送至所述待定位移动终端或E-SMLC,令所述待定位移动终端或E-SMLC通过传统的算法,根据每个参考节点确定的所述待定位移动终端向 每个参考节点发送的第二聚合参考信号的传输时间、以及每个参考节点的位置信息,确定所述待定位移动终端的位置信息;
在本实施例采用OTDOA定位方法对所述待定位移动终端进行定位时,所述信号接收设备为所述待定位移动终端,所述信号发送设备为所述参考节点,那么,在所述待定位移动终端根据上述方法,确定每个参考节点向所述待定位移动终端发送的第二聚合参考信号的传输时间后,所述待定位移动终端可以直接根据传统的算法,根据确定的每个参考节点向所述待定位移动终端发送的所述第二聚合参考信号的传输时间,以及每个参考节点的位置信息,确定所述待定位移动终端的位置信息;或者所述待定位移动终端将确定的每个参考节点向所述待定位移动终端发送的所述第二聚合参考信号的传输时间发送至E-SMLC,令所述E-SMLC通过传统的算法,根据每个参考节点向所述待定位移动终端发送的第二聚合参考信号的传输时间,以及每个参考节点的位置信息,确定所述待定位移动终端的位置信息。
其中,每个参考节点的位置信息均是已知的,在任意一个参考节点中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述参考节点的位置信息不同时,可以根据所述收发器的位置信息确定所述参考节点的位置信息,或者预设所述参考节点的位置信息。
采用本发明实施例提供的方法,在通过载波聚合技术发送信号对移动终端进行定位的过程中,信号接收设备根据生成信号发送设备用于传输参考信号的至少两个子载波中每个子载波上的参考信号,以及所述至少两个子载波间的TAE,生成第一聚合参考信号;并在接收到与所述第一聚合参考信号匹配的一信号后,确定所述信号为所述信号发送设备发送的第二聚合参考信号。这样,信号接收设备可以准确判断接收的信号是否为信号发送设备发送的第二聚合参考信号,进而准确确定所述第二聚合参考信号的传输时间,提高了第二聚合参考信号的传输时间精度,最终得到精确度较高的位置信息。
本发明实施例还提供了一种信号确定方法,适用于通过载波聚合技术发送信号对移动终端进行定位的网络架构(例如图1所示的网络架构)中的信 号发送设备,参阅图4所示,该方法的具体流程包括:
步骤401:信号发送设备向信号接收设备发送配置信息,以及所述信号发送设备用于传输参考信号的至少两个子载波间的TAE;所述信号发送设备为待定位移动终端或参考节点,且若所述信号发送设备为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息。
可选的,所述信号发送设备向所述信号接收设备发送所述配置信息,包括:
所述信号发送设备在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
在所述信号发送设备发送聚合参考信号之前,需要设置用于传输参考信号的至少两个子载波,然后在每个子载波上周期性发送针对该子载波设置的参考信号配置信息,该参考信号配置信息用于通知所述信号接收设备在该子载波上发送的参考信号的波形等信息。
可选的,在所述信号发送设备向所述信号接收设备发送所述TAE之前,还包括:
所述信号发送设备确定所述TAE。
其中,可选的,当所述信号发送设备为待定位移动终端时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波向一节点发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波 间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
其中,所述待定位移动终端在确定所述TAE时,所述节点可以为任意一个参考节点,或者其他节点,本发明对此不做限定。
可选的,当所述信号发送设备为参考节点时,且在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
其中,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000006
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所 述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
可选的,当所述信号发送设备为参考节点时,且在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息相同时,所述信号发送设备确定所述TAE,包括:
所述信号发送设备通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
其中,在步骤401中,所述信号发送设备在确定所述TAE时,与上述实施例步骤201中,根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE,方法相同,均包括多种方式,此处不再赘述。
步骤402:所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号。
所述信号发送设备通过将多个参考信号进行载波聚合得到聚合参考信号,用以提高信号的带宽,提高定位的精确度。
步骤403:所述信号发送设备将所述聚合参考信号发送至所述信号接收设备。
采用本发明实施例,在通过载波聚合技术发送信号对移动终端进行定位的过程中,信号发送设备将用于传输参考信号的至少两个子载波间的TAE发 送至信号接收设备,令信号接收设备根据所述至少两个子载波中每个子载波上的参考信号,以及所述至少两个子载波间的TAE,生成第一聚合参考信号;并在接收到与所述第一聚合参考信号匹配的一信号后,确定所述信号为所述信号发送设备发送的第二聚合参考信号。这样,信号接收设备可以准确判断接收的信号是否为信号发送设备发送的第二聚合参考信号,进而准确确定所述第二聚合参考信号的传输时间,提高了第二聚合参考信号的传输时间精度,最终得到精确度较高的位置信息。
基于以上实施例,本发明实施例还提供了一种信号接收设备,所述信号接收设备为待定位移动终端或参考节点,参阅图5所示,该信号接收设备500包括:接收单元501、确定单元502、生成单元503和处理单元504,其中,
接收单元501,用于接收信号发送设备发送的配置信息,若所述信号接收设备500为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备500为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
确定单元502,用于确定所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;
生成单元503,用于根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号;
处理单元504,用于在所述接收单元501接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
可选的,所述接收单元501,具体用于:
接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发 送的所述配置信息。
可选的,所述确定单元502,具体用于:
确定所述接收单元501接收所述信号发送设备发送的所述TAE;或者
将存储的所述信号发送设备对应的TAE,作为所述TAE。
可选的,当所述信号接收设备500为参考节点时,所述确定单元502在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
其中,在所述信号接收设备500中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备500的位置信息不同时,所述确定单元502在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE时,具体用于:
通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
或者
在所述信号接收设备500中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备500的位置信息相同时,所述确定单元502在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备 对应的TAE时,具体用于:
接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
可选的,在所述信号接收设备500中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备500的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000007
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
可选的,所述生成单元503,在基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号时,具体用于:
根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
基于上述实施例,本发明实施例还提供了一种信号发送设备,所述信号发送设备为待定位移动终端或参考节点,参阅图6所示,该信号发送设备600 包括:发送单元601、处理单元602,其中,
发送单元601,用于向信号接收设备发送配置信息,以及所述信号发送设备600用于传输参考信号的至少两个子载波间的时间同步误差TAE;且若所述信号发送设备600为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备600为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
处理单元602,用于将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
所述发送单元601还用于将所述聚合参考信号发送至所述信号接收设备。
可选的,所述发送单元601在向所述信号接收设备发送所述配置信息时,具体用于:
在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
可选的,所述信号发送设备600还包括:
确定单元603,用于在所述发送单元601向所述信号接收设备发送所述TAE之前,确定所述TAE。
可选的,当所述信号发送设备600为待定位移动终端时,所述确定单元603,具体用于:
通过所述至少两个子载波中每个子载波向一节点发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
可选的,当所述信号发送设备600为参考节点时,在所述信号发送设备600中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述 信号发送设备600的位置信息不同时,所述确定单元603,具体用于:
通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
或者
在所述信号发送设备600中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备600的位置信息相同时,所述确定单元603,具体用于:
通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
可选的,在信号发送设备600中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备600的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000008
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
基于以上实施例,本发明还提供了一种信号接收设备,所述信号接收设备可采用图2对应的实施例提供的方法,可以是与图5所示的信号接收设备相同的设备。所述信号接收设备700为待定位移动终端或参考节点,参阅图7所示,该信号接收设备700包括:收发器701、处理器702、总线703以及存储器704,其中:
收发器701、处理器702以及存储器704通过总线703相互连接;总线703可以是外设部件互连标准(peripheral component interconnect,简称PCI)总线或扩展工业标准结构(extended industry standard architecture,简称EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示,图7中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
收发器701用于与其它设备如所述信号发送设备等进行通信,如接收信号发送设备发送的配置信息、聚合参考信号等。
处理器702用于实现本发明实施例图2所示的信号确定方法,包括:
接收信号发送设备发送的配置信息,以及确定所述信号发送设备用于传输参考信号的至少两个子载波间的TAE;若所述信号接收设备700为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备700为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号;
接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
可选的,所述处理器702接收所述信号发送设备发送的所述配置信息,包括:
接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
可选的,所述处理器702确定所述TAE,包括:
接收所述信号发送设备发送的所述TAE;或者
将存储的所述信号发送设备对应的TAE,作为所述TAE。
可选的,当所述信号接收设备700为参考节点时,所述处理器702在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
其中,在所述信号接收设备700中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备700的位置信息不同时,所述处理器702在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
或者
在所述信号接收设备700中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备700的位置信息相同时,所述处理器702在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
可选的,在所述信号接收设备700中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备700的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000009
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发 器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
可选的,所述处理器702基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号,包括:
根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
该信号接收设备700还包括存储器704,用于存放程序等。具体地,程序可以包括程序代码,该程序代码包括计算机操作指令。存储器704可能包含随机存取存储器(random access memory,RAM),也可能还包括非易失性存储器(non-volatile memory),例如至少一个磁盘存储器。处理器702执行存储器704所存放的应用程序,实现如上信号确定方法。
基于以上实施例,本发明还提供了一种信号发送设备,所述信号发送设备可采用图4对应的实施例提供的方法,可以是与图6所示的信号发送设备相同的设备。所述信号发送设备800为待定位移动终端或参考节点,参阅图8所示,该信号发送设备800包括:收发器801、处理器802、总线803以及存储器804,其中:
收发器801、处理器802以及存储器804通过总线803相互连接;总线803可以是外设部件互连标准(peripheral component interconnect,简称PCI)总线或扩展工业标准结构(extended industry standard architecture,简称EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示,图8中仅用一条粗线表示,但并不表示仅有一根总线或一种类型的总线。
收发器801用于与其它设备如所述信号接收设备等进行通信,如向信号接收设备发送配置信息、所述信号发送设备800用于传输参考信号的至少两个子载波间的TAE,以及聚合参考信号等。
处理器802用于实现本发明实施例图4所示的信号确定方法,包括:
向信号接收设备发送配置信息,以及所述信号发送设备800用于传输参考信号的至少两个子载波间的TAE;若所述信号发送设备800为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备800为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
将所述聚合参考信号发送至所述信号接收设备。
可选的,所述处理器802向所述信号接收设备发送所述配置信息,包括:
在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
可选的,在所述处理器802向所述信号接收设备发送所述TAE之前,还包括:
确定所述TAE。
可选的,当所述信号发送设备800为待定位移动终端时,所述处理器802确定所述TAE,包括:
通过所述至少两个子载波中每个子载波向一节点发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
可选的,当所述信号发送设备800为参考节点时,在所述信号发送设备800中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备800的位置信息不同时,所述处理器802确定所述TAE,包括:
通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
针对所述至少两个子载波中每两个子载波执行以下操作:
根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
或者
在所述信号发送设备800中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备800的位置信息相同时,所述处理器802确定所述TAE,包括:
通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
确定在每个子载波上发送的参考信号的传输时间;
针对所述至少两个子载波中每两个子载波执行以下操作:
将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
可选的,在所述信号发送设备800中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备800的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
Figure PCTCN2015092031-appb-000010
其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子 载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
该信号发送设备800还包括存储器804,用于存放程序等。具体地,程序可以包括程序代码,该程序代码包括计算机操作指令。存储器804可能包含随机存取存储器(random access memory,RAM),也可能还包括非易失性存储器(non-volatile memory),例如至少一个磁盘存储器。处理器802执行存储器804所存放的应用程序,实现如上信号确定方法。
综上所述,通过本发明实施例中提供的一种信号确定方法及装置,在通过载波聚合技术发送信号对移动终端进行定位的过程中,信号接收设备可以根据信号发送设备用于传输参考信号的至少两个子载波间的TAE,以及所述信号发送设备在每个子载波上的参考信号,估计得到所述信号发送设备发送的载波聚合后的聚合参考信号,并在接收到一信号后,根据该信号与估计的聚合参考信号是否匹配,确定该信号是否为所述信号发送设备发送的聚合参考信号,这样,信号接收设备可以准确判断接收的信号是否为聚合参考信号,进而准确确定聚合参考信号的传输时间,最终得到精确度较高的位置信息。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图 和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例做出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例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 (24)

  1. 一种信号确定方法,其特征在于,包括:
    信号接收设备接收信号发送设备发送的配置信息,以及确定所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;所述信号接收设备为待定位移动终端或参考节点,且若所述信号接收设备为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
    所述信号接收设备根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号;
    所述信号接收设备接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
  2. 如权利要求1所述的方法,其特征在于,所述信号接收设备接收所述信号发送设备发送的所述配置信息,包括:
    所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
  3. 如权利要求1或2所述的方法,其特征在于,所述信号接收设备确定所述TAE,包括:
    所述信号接收设备接收所述信号发送设备发送的所述TAE;或者
    所述信号接收设备将存储的所述信号发送设备对应的TAE,作为所述TAE。
  4. 如权利要求3所述的方法,其特征在于,当所述信号接收设备为参考节点时,所述信号接收设备在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
    所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
    其中,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
    所述信号接收设备通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
    所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对应的收发器与所述信号发送设备之间的距离;
    所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操作:
    根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
    所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
    或者
    在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息相同时,所述信号接收设备在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,包括:
    所述信号接收设备接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
    所述信号接收设备确定在每个子载波上发送的参考信号的传输时间;
    所述信号接收设备针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
    所述信号接收设备根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
  5. 如权利要求4所述的方法,其特征在于,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
    Figure PCTCN2015092031-appb-100001
    其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
  6. 如权利要求1-5任一项所述的方法,其特征在于,所述信号接收设备基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号,包括:
    所述信号接收设备根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
  7. 一种信号确定方法,其特征在于,包括:
    信号发送设备向信号接收设备发送配置信息,以及所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;所述信号发送设备为待定位移动终端或参考节点,且若所述信号发送设备为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
    所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
    所述信号发送设备将所述聚合参考信号发送至所述信号接收设备。
  8. 如权利要求7所述的方法,其特征在于,所述信号发送设备向所述信号接收设备发送所述配置信息,包括:
    所述信号发送设备在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
  9. 如权利要求7或8所述的方法,其特征在于,在所述信号发送设备向所述信号接收设备发送所述TAE之前,还包括:
    所述信号发送设备确定所述TAE。
  10. 如权利要求9所述的方法,其特征在于,当所述信号发送设备为待定位移动终端时,所述信号发送设备确定所述TAE,包括:
    所述信号发送设备通过所述至少两个子载波中每个子载波向一节点发送参考信号;
    所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
    所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
    所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确 定所述TAE。
  11. 如权利要求9所述的方法,其特征在于,当所述信号发送设备为参考节点时,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,所述信号发送设备确定所述TAE,包括:
    所述信号发送设备通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
    所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
    所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
    根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
    所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
    或者
    在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息相同时,所述信号发送设备确定所述TAE,包括:
    所述信号发送设备通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
    所述信号发送设备确定在每个子载波上发送的参考信号的传输时间;
    所述信号发送设备针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波 间的时间同步误差长度;
    所述信号发送设备根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
  12. 如权利要求11所述的方法,其特征在于,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
    Figure PCTCN2015092031-appb-100002
    其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
  13. 一种信号接收设备,其特征在于,所述信号接收设备为待定位移动终端或参考节点,所述信号接收设备包括:
    接收单元,用于接收信号发送设备发送的配置信息,若所述信号接收设备为待定位移动终端,则所述信号发送设备为参考节点;若所述信号接收设备为参考节点,则所述信号发送设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
    确定单元,用于确定所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;
    生成单元,用于根据所述配置信息中的参考信号配置信息,生成所述至少两个子载波中每个子载波上的参考信号;并基于生成的所述参考信号,以 及确定的所述TAE,生成第一聚合参考信号;
    处理单元,用于在所述接收单元接收一信号后,对所述信号与所述第一聚合参考信号进行匹配;在当所述信号与所述第一聚合参考信号匹配时,确定所述信号为所述信号发送设备发送的第二聚合参考信号,所述第二聚合参考信号为所述信号发送设备将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合后生成的。
  14. 如权利要求13所述的信号接收设备,其特征在于,所述接收单元,具体用于:
    接收所述信号发送设备在所述至少两个子载波中每个子载波上周期性发送的所述配置信息。
  15. 如权利要求13或14所述的信号接收设备,其特征在于,所述确定单元,具体用于:
    确定所述接收单元接收所述信号发送设备发送的所述TAE;或者
    将存储的所述信号发送设备对应的TAE,作为所述TAE。
  16. 如权利要求15所述的信号接收设备,其特征在于,当所述信号接收设备为参考节点时,所述确定单元在将存储的所述信号发送设备对应的TAE,作为所述TAE之前,还包括:
    在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE,并存储所述TAE;
    其中,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,所述确定单元在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE时,具体用于:
    通过所述至少两个子载波中每个子载波对应的收发器接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
    确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述信号发送设备的位置信息,确定每个子载波对 应的收发器与所述信号发送设备之间的距离;
    针对所述至少两个子载波中每两个子载波执行以下操作:
    根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述信号发送设备之间的距离,确定该两个子载波间的时间同步误差长度;
    根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE;
    或者
    在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息相同时,所述确定单元在确定所述信号发送设备的位置信息的时刻,确定所述信号发送设备对应的TAE时,具体用于:
    接收所述信号发送设备在所述至少两个子载波中每个子载波上发送的参考信号;
    确定在每个子载波上发送的参考信号的传输时间;
    针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
    根据确定的每两个子载波间的时间同步误差长度,确定所述信号发送设备对应的TAE。
  17. 如权利要求16所述的信号接收设备,其特征在于,在所述信号接收设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号接收设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
    Figure PCTCN2015092031-appb-100003
    其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子 载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述信号发送设备之间的距离,S2为所述第二子载波对应的收发器与所述信号发送设备之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离估计误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离估计误差。
  18. 如权利要求13-17任一项所述的信号接收设备,其特征在于,所述生成单元,在基于生成的所述参考信号,以及确定的所述TAE,生成第一聚合参考信号时,具体用于:
    根据所述TAE,将生成的所述参考信号进行合成处理,生成所述第一聚合参考信号。
  19. 一种信号发送设备,其特征在于,所述信号发送设备为待定位移动终端或参考节点,所述信号发送设备包括:
    发送单元,用于向信号接收设备发送配置信息,以及所述信号发送设备用于传输参考信号的至少两个子载波间的时间同步误差TAE;且若所述信号发送设备为待定位移动终端,则所述信号接收设备为参考节点;若所述信号发送设备为参考节点,则所述信号接收设备为待定位移动终端;所述参考节点用于对所述待定位移动终端进行定位;其中,所述配置信息包括:针对所述至少两个子载波中每个子载波设置的参考信号配置信息;
    处理单元,用于将所述至少两个子载波中每个子载波上发送的参考信号进行载波聚合得到聚合参考信号;
    所述发送单元还用于将所述聚合参考信号发送至所述信号接收设备。
  20. 如权利要求19所述的信号发送设备,其特征在于,所述发送单元在向所述信号接收设备发送所述配置信息时,具体用于:
    在所述至少两个子载波中每个子载波上周期性向所述信号接收设备发送所述配置信息。
  21. 如权利要求19或20所述的信号发送设备,其特征在于,所述信号发送设备还包括:
    确定单元,用于在所述发送单元向所述信号接收设备发送所述TAE之前,确定所述TAE。
  22. 如权利要求21所述的信号发送设备,其特征在于,当所述信号发送设备为待定位移动终端时,所述确定单元,具体用于:
    通过所述至少两个子载波中每个子载波向一节点发送参考信号;
    确定在每个子载波上发送的参考信号的传输时间;
    针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
    根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
  23. 如权利要求21所述的信号发送设备,其特征在于,当所述信号发送设备为参考节点时,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,所述确定单元,具体用于:
    通过所述至少两个子载波中每个子载波对应的收发器向一参考移动终端发送参考信号;
    确定在每个子载波上发送的参考信号的传输时间;并根据每个子载波对应的收发器的位置信息、所述参考移动终端的位置信息,确定每个子载波对应的收发器与所述参考移动终端之间的距离;
    针对所述至少两个子载波中每两个子载波执行以下操作:
    根据在该两个子载波上发送的参考信号的传输时间、该两个子载波中每个子载波对应的收发器与所述参考移动终端之间的距离,确定该两个子载波间的时间同步误差长度;
    根据确定的每两个子载波间的时间同步误差长度,确定所述TAE;
    或者
    在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息相同时,所述确定单元,具体用于:
    通过所述至少两个子载波中每个子载波向一参考移动终端发送参考信号;
    确定在每个子载波上发送的参考信号的传输时间;
    针对所述至少两个子载波中每两个子载波执行以下操作:
    将在该两个子载波上发送的参考信号的传输时间差,作为该两个子载波间的时间同步误差长度;
    根据确定的每两个子载波间的时间同步误差长度,确定所述TAE。
  24. 如权利要求23所述的信号发送设备,其特征在于,在所述信号发送设备中的所述至少两个子载波中每个子载波对应的收发器的位置信息与所述信号发送设备的位置信息不同时,该两个子载波间的时间同步误差长度,满足以下公式:
    Figure PCTCN2015092031-appb-100004
    其中,TAE1_2为该两个子载波间的时间同步误差长度,TOA2为该两个子载波中在第一子载波上发送的参考信号的传输时间,TOA1为该两个子载波中在第二子载波上发送的参考信号的传输时间,S1为所述第一子载波对应的收发器与所述参考移动终端之间的距离,S2为所述第二子载波对应的收发器与所述参考移动终端之间的距离,C为参考信号的传输速度,n1为在所述第一子载波上发送的参考信号的噪声带来的距离误差,n2为在所述第二子载波上发送的参考信号的噪声带来的距离误差。
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