WO2014005481A1 - 一种信号传输方法及装置 - Google Patents

一种信号传输方法及装置 Download PDF

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Publication number
WO2014005481A1
WO2014005481A1 PCT/CN2013/077401 CN2013077401W WO2014005481A1 WO 2014005481 A1 WO2014005481 A1 WO 2014005481A1 CN 2013077401 W CN2013077401 W CN 2013077401W WO 2014005481 A1 WO2014005481 A1 WO 2014005481A1
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WO
WIPO (PCT)
Prior art keywords
identification signal
resource
signal
information
location information
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PCT/CN2013/077401
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English (en)
French (fr)
Inventor
刘佳敏
焦斌
许芳丽
Original Assignee
电信科学技术研究院
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 电信科学技术研究院 filed Critical 电信科学技术研究院
Priority to EP13812873.1A priority Critical patent/EP2871907B1/en
Priority to US14/412,455 priority patent/US9693376B2/en
Publication of WO2014005481A1 publication Critical patent/WO2014005481A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a signal transmission method and apparatus. Background technique
  • the centralized control mode of the network is adopted, that is, the uplink and downlink data of the UE (user equipment) are transmitted and received under the control of the network.
  • the communication between the UE and the UE is forwarded and controlled by the network. There is no direct communication link between the UE and the UE, and the UE does not allow itself to send uplink data.
  • the existing D2D (Device to Device) communication refers to direct communication between the UE and the UE through technologies such as Bluetooth, Wifi (Wireless Fidelity), and the like. It is an unlicensed band resource and is the user's own behavior. It is not managed and controlled by the network operator, and the application scenario is limited.
  • Another mode is to introduce D2D technology in the mobile communication carrier network.
  • this D2D communication mode certain direct communication is allowed between the UE and the UE. These direct communication links can be established under network control or assistance. Get up.
  • the basis for D2D communication between the UE and the UE is to discover the neighboring UEs.
  • the embodiment of the invention provides a signal transmission method and device, which are used to implement a technical solution for UEs to discover each other under the control of a mobile communication network.
  • the UE # ⁇ determines a specific resource for transmitting the identification signal according to the resource location information, and sends an identification signal of the UE on the specific resource.
  • the UE acquires information required for receiving an identification signal of another UE from the network side;
  • a signal sending apparatus provided by an embodiment of the present invention includes:
  • An information acquiring unit configured to acquire, from the network side, resource location information used to indicate that the UE sends the identity signal of the UE;
  • a sending unit configured to: determine, according to the resource location information, a specific resource that sends the identity signal, and send the identity signal of the UE on the specific resource.
  • An information acquiring unit configured to acquire, from a network side, information required for receiving an identification signal of the UE
  • a receiving decoding unit configured to receive and decode an identification signal of the UE according to the information required for receiving the identification signal of the other UE.
  • an information acquiring unit configured to acquire, from the network side, resource location information used to indicate that the UE sends the identity signal of the UE, and acquire information required to receive the identity signal of the UE from the network side;
  • a sending unit configured to: determine, according to the resource location information, a specific resource that sends an identity signal, and send an identity signal of the UE on the specific resource;
  • a receiving decoding unit configured to receive and decode the identification signal of the UE according to the acquired information required for receiving the identity signal of the UE.
  • a user equipment provided by an embodiment of the present invention includes the device.
  • the UE acquires resource location information for indicating that the UE sends the identity signal of the UE from the network side, and the UE sends the identity signal of the UE on the specific resource according to the resource location information.
  • the user equipment UE acquires information required for receiving the identification signals of other UEs from the network side; the UE receives and decodes the identification signals of other UEs according to the information.
  • FIG. 1 is a schematic diagram of the principle of a mobile communication system in the background art
  • FIG. 3 is a schematic flowchart of a signal sending method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a signal receiving method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of a process for transmitting an identification signal according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a process of transmitting an identification signal according to Embodiment 2 of the present invention.
  • FIG. 7 is a schematic diagram of a process for transmitting an identification signal according to Embodiment 3 of the present invention
  • FIG. FIG. 8 is a schematic diagram of a process for transmitting an identification signal according to Embodiment 4 of the present invention
  • FIG. 7 is a schematic diagram of a process for transmitting an identification signal according to Embodiment 3 of the present invention
  • FIG. 8 is a schematic diagram of a process for transmitting an identification signal according to Embodiment 4 of the present invention
  • FIG. 9 is a schematic structural diagram of a signal sending apparatus according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of a signal receiving apparatus according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of another signal sending apparatus according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic structural diagram of another signal receiving apparatus according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic structural diagram of another signal transmission apparatus according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a signal transmission method and device, which are used to implement a technical solution for UEs to discover each other under the control of a mobile communication network.
  • the embodiment of the present invention provides A signal transmission method and device are implemented to implement the mutual discovery of UEs under the control of a mobile communication network. Under the control of the network, the mobile devices can efficiently discover each other and reduce the probability of collision.
  • a signal sending method provided by an embodiment of the present invention includes:
  • the UE acquires resource location information used by the UE to indicate that the UE sends the identity signal of the UE.
  • the UE # ⁇ determines, according to the resource location information, a specific resource that sends the identity signal, and sends the identity signal of the UE on the specific resource.
  • the resource location information includes:
  • Frequency domain resource location information and time domain resource location information are used, and the like.
  • the method further includes:
  • the UE # ⁇ determines the specific resource that sends the identifier signal according to the resource location information, and sends the identifier signal of the UE on the specific resource, including:
  • the UE determines a specific resource that sends the identification signal according to the resource location information and the parameter information, and sends the identification signal of the UE on the specific resource.
  • the parameter information is at least one of the following parameters:
  • the power parameter for example, the maximum transmit power limit of the UE sending the identification signal
  • a period parameter such as a minimum period limit at which the UE sends the identification signal, etc.
  • Repeating parameters for example, to ensure the success rate found by other users, the number of repetitions of the identity signal sent by the UE, and the like;
  • the UE transmits a modulation coding parameter or the like of the identification signal.
  • the UE may repeat its own identification signal and periodically broadcast it if necessary;
  • the identification signal is a special identifier of each UE, and is sent according to a specific coding manner or format, and the identification signal includes identity information of each UE and/or information for providing services.
  • the UE determines the specific resource that sends the identification signal according to the resource location information and the parameter information, and sends the identification signal of the UE on the specific resource, including:
  • the UE sends the identification signal of the UE in a broadcast manner on a specific resource according to the parameter information.
  • the UE when the UE is found to be discovered by other users, according to the resource location information and the parameter information parameters acquired from the network side, in a manner of avoiding collision and improving the success rate as much as possible, the UE is broadcasted to the surrounding on a specific resource. Identification signal.
  • the discovered UE needs to be discovered by other users, for example: the user has corresponding business requirements, and the function switch of D2D discovery is turned on; or the user has the demand, the network only resides in the algorithm and control, and allows the D2D discovery process to be performed. .
  • the identification signal is sent to the surrounding area in a broadcast manner on a specific resource.
  • the UE randomly selects a time-frequency position and sends an identification signal to the surrounding area in a broadcast manner within a time range of the network configuration. .
  • a signal receiving method includes: S201: A UE acquires information required for receiving an identification signal of another UE from a network side;
  • the UE receives and decodes identifier signals of other UEs according to information required for receiving identifier signals of other UEs.
  • the information required for receiving the identification signals of other UEs includes at least:
  • the resource location information of the identification signals of other UEs and the modulation and coding information of the identification signals of other UEs are transmitted.
  • the UE receives and decodes the identification signals of other UEs according to the information required for receiving the identification signals of the other UEs, including:
  • the UE receives the identification signals of other UEs according to the resource location information
  • the UE decodes the identification signals of other UEs according to the modulation and coding information.
  • the UE receives and decodes the identification signal sent by the surrounding UE according to the configured manner in the resource location of the network configured transmission identification signal.
  • the discovered UE identification signal of interest may be further processed, for example, the UE may be interested in It is interesting to find that the UE requests further detailed information from the network, or performs D2D communication with the UE, etc. under the assistance of the network.
  • the process of obtaining various configuration information by the UE from the network side may be specified by a standard, or may be sent by using a public signaling, that is, a broadcast, or may be sent by the base station to the UE or sent by using a dedicated signaling. Give the UE.
  • Embodiment 1 Basic mode.
  • Step S301 The UE obtains resource location information from the network side.
  • Step S302 The UE starts to select a resource at a time when the identifier signal needs to be sent (for example, the time when the UE turns on the function switch), and randomly selects a resource to send its own identification signal, and waits for the surrounding user to find it;
  • the UE may randomly select all the resource elements that are available for the identification signal transmission in the consecutive multiple identification signal subframes. A piece of resources.
  • Step S303 In order to cope with the change of the surrounding users, the UE may send its own identification signal in a certain period, so that the newly approached user finds itself.
  • the minimum period in which the UE sends the identification signal should meet the configuration limitation of the periodic parameter sent by the network side. In order to avoid frequent transmission of the identification signal by the user, the probability of interference and collision to other users is increased, and the overall success rate of the discovery is decreased.
  • step S302 is repeated.
  • Embodiment 2 Repeating method
  • Step S401 The UE obtains resource location information from the network side.
  • Step S402 The UE randomly selects a resource according to the indication of the resource location information to send its own identification signal, waiting to be discovered by the surrounding users, from the moment when the identification signal needs to be sent.
  • Step S403 After transmitting the identification signal for the first time, the UE sends the repetitive parameter according to the network side, and repeatedly sends the identification signal N times in a specific time. This repetition may increase the probability that the UE is found in response to the resource collision;
  • the specific time and N are both repeated parameters, and N can be set to 2 or 3, for example.
  • the specific time length of a specific time can be set according to actual needs, and the unit is in the order of milliseconds, for example, 10 milliseconds.
  • N is a positive integer.
  • the rules for repeatedly sending identification signals can be as follows:
  • the UE repeats according to a specific subframe interval. For example, the UE randomly selects a frequency reserved for the identification signal in the next N-1 identification signal subframes after the first transmission of the identifier signal subframe.
  • the domain resource to repeatedly send the identification signal;
  • the subframe interval may be pre-configured to be 1, and after the UE initially sends the identification signal, it may be sent again in the next next identification signal subframe until N times.
  • the UE repeats according to a random subframe interval.
  • the interval between the subframe in which the UE first sends the identifier signal and the subframe in which the identifier signal is sent the second time may satisfy a certain random distribution, for example, [0, M Random distribution, on the basis of satisfying a certain random distribution in the time domain, randomly selecting a frequency domain resource reserved for the identification signal in the second selected identification signal subframe, and repeatedly transmitting the identification signal until the N repetitions.
  • the value of M can be set according to actual needs, for example, it can be set to 10 subframes.
  • M is a positive integer.
  • the repetition period may be relatively short and can be on the order of milliseconds.
  • Step S404 In order to cope with the change of the surrounding users, the UE may still send its own identification signal in a certain period, so that the newly approached user finds itself, wherein the minimum period for the UE to send the identification signal should meet the configuration limitation of the network side to avoid Users frequently send identification signals, causing the probability of interference and collision to other users to rise, and the overall discovery success rate is degraded.
  • step S402 and step S403 are repeated.
  • Embodiment 3 Monitoring mode
  • Step S501 The UE obtains resource location information from the network side.
  • Step S502 The UE starts to listen to the time when the identification signal needs to be sent, and the UE monitors the N consecutive identification signal sub-frames from the following, and according to the monitoring result, performs the following steps S503 or S504;
  • Step S503 If the result of the monitoring is that the identification signal subframe is idle, the UE may randomly select an identification signal resource and send its own identification signal.
  • the principle of randomly selecting resources can be referred to in the first embodiment.
  • the principle for determining that the identity signal subframe is idle may be as follows:
  • the N consecutive identification signal sub-frames are idle, wherein one identification signal sub-frame is idle, and may be defined as the frequency domain resource of all identification signals on the sub-frame, and no other user's identification signal is detected;
  • the N consecutive identification signal sub-frames are lightly loaded, wherein the identification signal sub-frame is lightly loaded, and may be defined as a resource in which the identification signal of other users is detected in the frequency domain resources of all identification signals on the sub-frame.
  • the proportion of the total number of uplink identification resources is less than a certain threshold;
  • the entire N identification signal sub-frames are lightly loaded, which means that the number of resources sent by the identification signals of other users in the total reserved frequency domain resources of the consecutive N identification signal sub-frames accounts for the total number of the entire uplink identification resources.
  • the ratio is less than a certain threshold
  • the overall N identification signals are determined.
  • the frames are lightly loaded.
  • Step S504 If the result of the monitoring is that the identification signal subframe is not in an idle state, the UE performs backoff according to a certain rule.
  • the backoff rules can be as follows:
  • the UE waits for a certain period of time according to a certain random distribution according to the backoff parameter of the network configuration. For example, a uniformly distributed random number can be taken in [0, T] time, and wait, where T is a positive integer, and then steps are performed. Alternatively, the UE may continuously detect N consecutive identification signal subframes according to the window mechanism until the idle condition is satisfied, and then the UE may directly proceed to step S503;
  • the window mechanism that is, the UE continuously maintains a window, and the window always maintains N consecutive identification signal subframes, and calculates whether the N identification signal subframes meet the threshold requirement, and if yes, the subsequent transmission, if not If yes, the oldest identification signal sub-frame in the window is removed from the window, and the next latest identification signal sub-frame is included in the window, and the threshold judgment of N consecutive sub-frames is performed again.
  • Step S505 In order to cope with the change of the surrounding users, the UE may still send its own identification signal in a certain period, so that the newly approached user finds itself, wherein the minimum period for the UE to send the identification signal should meet the configuration limitation of the network side to avoid Users frequently send identification signals, causing the probability of interference and collision to other users to rise, and the overall discovery success rate is degraded.
  • step S502 to step S503 or S504 are repeated.
  • Embodiment 4 Listening + repeating mode
  • Step S601 The UE obtains resource location information from the network side.
  • Step S602 The UE starts to listen to the N consecutive identification signal sub-frames from the time when the identification signal needs to be sent, and performs the following steps S603 or S604 according to the monitoring result;
  • Step S603 If the result of the monitoring is that the identification signal subframe is idle, the UE may randomly select an identification signal resource and send its own identification signal. After transmitting the identification signal for the first time, the UE repeatedly sends the identification signal M times in a short time. This repetition can increase the probability of being discovered in order to cope with the collision;
  • the principle of randomly selecting resources can be referred to in the first embodiment.
  • Embodiment 3 For the principle of determining that the identifier signal subframe is idle, reference may be made to Embodiment 3.
  • Step S604 If the result of the monitoring is that the identification signal subframe is not in an idle state, the UE performs backoff according to a certain rule;
  • the backoff rule can be referred to in the third embodiment.
  • Step S605 In order to cope with the change of the surrounding users, the UE can still send its own identification signal in a certain period, so that the newly approached user can find himself.
  • the minimum period for the UE to send the identification signal should meet the configuration limitation of the network side to avoid Users frequently send identification signals, causing the probability of interference and collision to other users to rise, and the overall discovery success rate is degraded.
  • the next time the UE needs to send the identification signal then repeat step S602 to step S603 or S604;
  • a signaling apparatus provided by an embodiment of the present invention includes:
  • the information acquiring unit 11 is configured to acquire, from the network side, resource location information used to indicate that the UE sends the identity signal of the UE;
  • the sending unit 12 is configured to determine, by using the resource location information, a specific resource that sends the identity signal, and send the identity signal of the UE on the specific resource.
  • the resource location information includes:
  • Frequency domain resource location information and time domain resource location information are Frequency domain resource location information and time domain resource location information.
  • the information acquiring unit 11 is further configured to:
  • the sending unit 12 is specifically configured to:
  • the parameter information includes at least one of the following parameters:
  • the sending unit 12 is specifically configured to:
  • the identification signal of the UE is broadcasted on a specific resource.
  • the sending unit 12 sends the identification signal of the UE in a broadcast manner on a specific resource according to the parameter information, including:
  • the resource is selected to transmit its own identification signal
  • the identification signal is repeatedly sent N times in a specific time according to the repeated parameter sent by the network side, where the specific time and N are repeated parameters.
  • the sending unit 12 After transmitting the identification signal for the first time, the sending unit 12 repeatedly sends the identification signal N times in a specific time according to the repeated parameter sent by the network side, including:
  • the identification signal is repeatedly transmitted N times in a specific time according to a random sub-frame interval.
  • the sending unit 12 sends the identification signal of the UE in a broadcast manner on a specific resource according to the parameter information, including:
  • the N consecutive identification signal sub-frames after the monitoring are monitored; if the identification signal sub-frame is idle, an identification signal resource is randomly selected, and the own identification signal is sent.
  • the sending unit 12 is further configured to:
  • the identifier signal sub-frame If the identifier signal sub-frame is not in the idle state, wait for the preset duration according to the preset random distribution parameter, and then start listening to the N consecutive identification signal subframes from then on, starting from the moment when the identification signal needs to be sent; Or,
  • the N consecutive identification signal sub-frames are detected in real time until the N consecutive identification signal sub-frames are idle, the UE randomly selects an identification signal resource, and sends its own identification signal.
  • the sending unit 12 determines that the identifier signal subframe is idle, and includes:
  • the load of consecutive N identification signal subframes is less than a preset threshold
  • the load of the entire N identification signal subframes is less than a preset threshold.
  • a signal receiving apparatus includes:
  • the information acquiring unit 21 is configured to acquire, from the network side, information required for receiving the identification signal of the UE; a receiving decoding unit 22, configured to receive and decode according to information required for receiving identification signals of other UEs
  • the identification signal of the UE is the identification signal of the UE.
  • the information required for receiving the identification signals of other UEs includes at least:
  • the resource location information of the identity signal of the UE and the modulation and coding information of the identity signal of the UE are transmitted.
  • the receiving decoding unit 22 is specifically configured to:
  • the identification signal of the UE is decoded according to the modulation and coding information.
  • a signal transmission device provided by an embodiment of the present invention, that is, a receiving device that can be used as an identification signal, or a transmitting device for identifying a signal, the device includes:
  • an information acquiring unit configured to acquire, from the network side, resource location information used to indicate that the UE sends the identity signal of the UE, and acquire information required to receive the identity signal of the UE from the network side;
  • a sending unit configured to determine, according to the resource location information, a specific resource that sends the identity signal, and send the identity signal of the UE on the specific resource;
  • a receiving decoding unit configured to receive and decode the identification signal of the UE according to the acquired information required for receiving the identification signal of the UE.
  • another signal transmitting apparatus provided by an embodiment of the present invention includes: a first processor 1110 and a first transmitter 1111.
  • the first processor 1110 is configured to acquire, from the network side, resource location information used to indicate that the user equipment UE sends the identity signal of the UE;
  • the first transmitter 1111 is configured to determine, according to the resource location information, a specific resource that sends an identity signal, and send the identity signal of the UE on the specific resource.
  • the resource location information includes:
  • Frequency domain resource location information and time domain resource location information are Frequency domain resource location information and time domain resource location information.
  • the first processor 1110 is further configured to:
  • the first transmitter 1111 is specifically configured to:
  • the parameter information includes at least one of the following parameters:
  • the first transmitter 1111 is specifically configured to:
  • the first transmitter 1111 broadcasts the identification signal of the UE on a specific resource according to the parameter information, including:
  • the resource is selected to transmit its own identification signal
  • the identification signal is repeatedly sent N times in a specific time according to the repeated parameter sent by the network side, where the specific time and N are the repeated parameters;
  • N is a positive integer.
  • the first transmitter 1111 is specifically configured to:
  • the identification signal After transmitting the identification signal for the first time, according to the repeated parameters sent by the network side, the identification signal is repeatedly sent N times in a specific time, and the identifier is repeatedly sent N times in a specific time according to a specific subframe interval or a random subframe interval. signal.
  • the first transmitter 1111 is specifically configured to:
  • N is positive Integer; If N consecutive identification signal subframes are idle, randomly select an identification signal resource and send its own identification signal.
  • the first transmitter 1111 is further configured to:
  • the identifier signal sub-frame If the identifier signal sub-frame is not in the idle state, wait for the preset duration according to the preset random distribution parameter, and then start listening to the N consecutive identification signal subframes from then on, starting from the moment when the identification signal needs to be sent; Or,
  • the N consecutive identification signal sub-frames are detected in real time until the N consecutive identification signal sub-frames are idle, the UE randomly selects an identification signal resource, and sends its own identification signal.
  • the first transmitter 1111 determines that the identifier signal subframe is idle, and includes:
  • the load of consecutive N identification signal subframes is less than a preset threshold
  • the load of the entire N identification signal subframes is less than a preset threshold.
  • another signal receiving apparatus provided by an embodiment of the present invention includes: a second processor 1200 and a first receiver 1210.
  • the second processor 1200 is configured to acquire, from the network side, information required for receiving an identification signal of the UE;
  • the first receiver 1210 is configured to receive and decode an identification signal of the UE according to the information required for receiving an identification signal of another UE.
  • the information required for receiving the identification signals of other UEs includes:
  • the first receiver 1210 is specifically configured to:
  • another signal transmission apparatus includes: a third processor 1300, a second transmitter 1310, and a second receiver 1320.
  • the third processor 1300 is configured to acquire, from the network side, resource location information used to indicate that the user equipment UE sends the identity signal of the UE, and acquire information required to receive the identity signal of the UE from the network side;
  • a second transmitter 1310 configured to determine, according to the resource location information, a specific resource that sends an identity signal, and send an identifier signal of the UE on the specific resource;
  • the second receiver 1320 is configured to receive and decode the identification signal of the UE according to the acquired information required for receiving the identity signal of the UE.
  • a user equipment includes the foregoing apparatus, that is, the user equipment can be used as a receiving device for the identification signal, or can be used as a transmitting device for the identification signal.
  • the UE obtains the parameter information of the sending identifier signal from the network side, and completes the sending of the identifier signal under a certain rule, so that the surrounding users can find the neighboring UE by parsing the identification signal, so A technical solution for mutual discovery between UEs is given, which effectively avoids collisions and improves the probability of success of discovery.
  • 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 present invention is in the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) in which computer usable program code is embodied.
  • 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

本申请公开了一种信号传输方法及装置,用以实现在移动通信网络控制下的UE彼此发现的技术方案。本发明提体一种信号发送方法包括:UE从网络侧获取用于指示该UE发送该UE的标识信号的资源位置信息;UE根据所述资源位置信息确定出发送标识信号的特定资源,并在所述特定资源上发送该UE的标识信号。

Description

一种信号传输方法及装置
本申请要求在 2012年 7月 4 日提交中国专利局、 申请号为 201210230624.3、 发明名 称为"一种信号传输方法及装置"的中国专利申请的优先权, 其全部内容通过引用结合在本 申请中。
技术领域
本发明涉及通信技术领域, 尤其涉及一种信号传输方法及装置。 背景技术
参见图 1 , 在 LTE ( Long Term Evolution, 长期演进) 系统中, 釆取的是网络集中控制 的方式, 即 UE (用户设备 ) 的上下行数据都在网络的控制下进行发送和接收。 UE和 UE 之间的通信, 是由网络进行转发和控制的。 UE与 UE之间不存在直接的通信链路, UE也 不允许自行发送上行数据。
参见图 2, 现有的 D2D ( Device to Device, 设备间 ) 的通信, 是指 UE和 UE之间通 过蓝牙, Wifi ( Wireless Fidelity, 无线保真技术)等技术进行直接通信, 这种通信利用的 是免授权频段资源, 是用户自身的行为, 不受网络运营商的管理和控制, 应用场景比较受 限。
另一种模式是在移动通信运营商网络中引入 D2D技术, 在这种 D2D通信模式中, UE 和 UE之间允许进行一定的直接通信, 这些直接通信链路可以是在网络控制或者辅助下建 立起来的。 UE和 UE之间进行 D2D通信的基础是对靠近的 UE进行发现。
然而, 现有技术中, 不存在移动通信网络控制下的 UE彼此发现的技术方案。 发明内容
本发明实施例提供了一种信号传输方法及装置,用以实现在移动通信网络控制下的 UE 彼此发现的技术方案。
本发明实施例提供的一种信号发送方法包括:
UE从网络侧获取用于指示该 UE发送该 UE的标识信号的资源位置信息;
UE # ^据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特定资源上发 送该 UE的标识信号。
本发明实施例提供的一种信号接收方法包括:
UE从网络侧获取用于接收其他 UE的标识信号所需的信息;
UE根据所述信息, 接收并解码其他 UE的标识信号。 本发明实施例提供的一种信号发送装置包括:
信息获取单元, 用于从网络侧获取用于指示 UE发送该 UE的标识信号的资源位置信 息;
发送单元, 用于 #>据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特 定资源上发送该 UE的标识信号。
本发明实施例提供的一种信号接收装置包括:
信息获取单元, 用于从网络侧获取用于接收 UE的标识信号所需的信息;
接收解码单元, 用于根据所述用于接收其他 UE的标识信号所需的信息, 接收并解码 UE的标识信号。
本发明实施例提供的一种信号传输装置包括:
信息获取单元, 用于从网络侧获取用于指示 UE发送该 UE的标识信号的资源位置信 息; 以及, 从网络侧获取用于接收 UE的标识信号所需的信息;
发送单元, 用于 #>据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特 定资源上发送 UE的标识信号;
接收解码单元, 用于根据所述获取的用于接收 UE的标识信号所需的信息, 接收并解 码 UE的标识信号。
本发明实施例提供的一种用户设备, 包括所述装置。
本发明实施例, 在发送侧, UE从网络侧获取用于指示该 UE发送该 UE的标识信号的 资源位置信息; UE根据所述资源位置信息,在特定资源上发送该 UE的标识信号。相应地, 在接收侧, 用户设备 UE从网络侧获取用于接收其他 UE的标识信号所需的信息; UE根 据所述信息, 接收并解码其他 UE的标识信号。 从而实现了在移动通信网络控制下的 UE 彼此发现的技术方案。 附图说明
图 1为背景技术中移动通信系统的原理示意图;
图 2为背景技术中 D2D通信的原理示意图;
图 3为本发明实施例提供的一种信号发送方法的流程示意图;
图 4为本发明实施例提供的一种信号接收方法的流程示意图;
图 5为本发明实施例一提供的发送标识信号的过程示意图;
图 6为本发明实施例二提供的发送标识信号的过程示意图;
图 7为本发明实施例三提供的发送标识信号的过程示意图; 图 8为本发明实施例四提供的发送标识信号的过程示意图;
图 9为本发明实施例提供的一种信号发送装置的结构示意图;
图 10为本发明实施例提供的一种信号接收装置的结构示意图;
图 11为本发明实施例提供的另一种信号发送装置的结构示意图;
图 12为本发明实施例提供的另一种信号接收装置的结构示意图;
图 13为本发明实施例提供的另一种信号传输装置的结构示意图。 具体实施方式
本发明实施例提供了一种信号传输方法及装置,用以实现在移动通信网络控制下的 UE 彼此发现的技术方案。
在移动通信系统未来发展中, 为了更好的满足用户需求, 提升交互信息的效率, 引入 移动设备之间的互相发现甚至直接通信的机制, 移动设备之间如何发现对方, 因此本发明 实施例提供了一种信号传输方法及装置, 用以实现在移动通信网络控制下的 UE彼此发现 的技术方案, 在网络的控制之下, 使得移动设备之间能够高效的互相发现, 并降低碰撞的 概率。
参见图 3 , 在标识信号的发送端, 本发明实施例提供的一种信号发送方法, 包括:
5101、 UE从网络侧获取用于指示该 UE发送该 UE的标识信号的资源位置信息;
5102、 UE # ^据资源位置信息确定出发送标识信号的特定资源, 并在特定资源上发送 该 UE的标识信号。
较佳地, 资源位置信息, 包括:
频域资源位置信息和时域资源位置信息等。
较佳地, 该方法还包括:
UE从网络侧获取用于指示 UE发送标识信号的参数信息;
UE # ^据资源位置信息确定出发送标识信号的特定资源, 并在特定资源上发送该 UE 的标识信号, 包括:
UE根据资源位置信息以及参数信息确定出发送标识信号的特定资源, 并在特定资源 上发送该 UE的标识信号。
较佳地, 参数信息至少下列参数之一:
功率参数、 周期参数、 重复参数和调制编码参数。
其中, 功率参数, 例如 UE发送标识信号的最大发送功率限制;
周期参数 , 例如 UE发送标识信号的最小周期限制等; 重复参数, 例如为了保证被其它用户发现的成功率, UE发送标识信号的重复次数等;
UE发送标识信号的调制编码参数等。
如果有需要的话, UE可以将自己的标识信号重复和周期性地广播;
其中, 标识信号是每个 UE的特殊标识, 按照特定的编码方式或者格式进行发送, 标 识信号中含有每个 UE的身份信息和 /或提供服务的信息等。
较佳地, UE根据资源位置信息以及参数信息确定出发送标识信号的特定资源, 并在 特定资源上发送该 UE的标识信号, 包括:
UE #>据资源位置信息确定用于发送该 UE的标识信号的特定资源;
UE按照参数信息, 在特定资源上以广播方式发送该 UE的标识信号。
也就是说, 被发现 UE在需要被其它用户发现时, 根据从网络侧获取的资源位置信息 以及参数信息参数, 以尽量避免碰撞和提高成功率的方式, 在特定资源上以广播方式向周 围发送标识信号。
其中, 被发现 UE需要被其它用户发现, 例如: 用户本人有相应的业务需求, 打开了 D2D发现的功能开关; 或者用户有了需求, 网络才 居算法和控制等, 又允许其进行 D2D 发现过程。
在特定资源上以广播方式向周围发送标识信号, 例如: UE在网络配置的资源范围之 内, 在距离较近的一段时频位置上, 随机选择一个时频位置以广播方式向周围发送标识信 号。
参见图 4, 在标识信号的接收端, 本发明实施例提供的一种信号接收方法, 包括: S201、 UE从网络侧获取用于接收其他 UE的标识信号所需的信息;
S202、 UE根据用于接收其他 UE的标识信号所需的信息,接收并解码其他 UE的标识 信号。
较佳地, 用于接收其他 UE的标识信号所需的信息, 至少包括:
传输其他 UE的标识信号的资源位置信息和其他 UE的标识信号的调制编码信息。 较佳地, UE根据用于接收其他 UE的标识信号所需的信息, 接收并解码其他 UE的标 识信号, 包括:
UE根据资源位置信息, 接收其他 UE的标识信号;
UE根据调制编码信息, 对其他 UE的标识信号进行解码。
也就是说, UE在网络配置的发送标识信号的资源位置, 按照配置的方式, 对周围 UE 所发送的标识信号进行接收和解码。
进一步, 还可以将感兴趣的被发现 UE标识信号进行后续处理, 例如 UE可以对感兴 趣的被发现 UE向网络请求进一步的详细信息, 或者在网络辅助下, 与该 UE进行 D2D通 信等。
其中, UE从网络侧获得各种配置信息的过程, 可以是标准事先规定, 也可以是通过 公共信令即广播形式发送, 还可以由基站主动下发给 UE或者基于 UE请求通过专用信令 发送给 UE。
下面给出本发明的四个具体实施例的说明。
实施例一: 基本方式。
在标识信号的发送端, 参见图 5 , 发送标识信号的过程如下:
步骤 S301: UE从网络侧获得资源位置信息;
步骤 S302: UE从需要发送标识信号的时刻 (例如 UE打开功能开关的时刻)开始, 按照资源位置信息的指示, 随机选取一块资源, 来发送自身的标识信号, 等待被周围用户 发现;
其中, 随机选取资源的原则有如下两种:
一: 在离当前子帧最近的标识信号子帧 (即才 据网络侧的配置, 能够发送标识信号的 子帧) 中, 在所有预留给标识信号的频域资源中, 等概率的随机选取一块资源;
二: 从离当前子帧最近的标识信号子帧开始, 在连续多个标识信号子帧中, 先随机选 取一个标识信号子帧, 然后在选定的标识信号子帧中, 再在所有预留给标识信号的频域资 源中, 等概率的随机选取一块资源。
其中, 在每个标识信号子帧中的用于发送标识信号的资源大小不一致的情况下, UE 可以从连续多个标识信号子帧中的所有可用于标识信号发送的资源单元中等概率的随机 选取一块资源。
步骤 S303 : 为了应对周围用户的变化, UE可以以一定的周期发送自己的标识信号, 以便于新接近的用户发现自己, 其中 UE发送标识信号的最小周期应该满足网络侧发送的 周期参数的配置限制, 以避免用户频繁发送标识信号, 造成对其它用户的千扰和碰撞概率 上升, 整体发现成功率下降的情况。 下一次 UE需要发送标识信号时, 则重复步骤 S302。
实施例二: 重复方式
在标识信号的发送端, 参见图 6 , 发送标识信号的过程如下:
步骤 S401: UE从网络侧获得资源位置信息;
步骤 S402: UE从需要发送标识信号的时刻开始, 按照资源位置信息的指示, 随机选 取一块资源, 来发送自身的标识信号, 等待被周围用户发现;
其中, 随机选取资源的原则可以参考实施例一中。 步骤 S403: UE在第一次发送标识信号之后, 按照网络侧发送重复参数, 在特定时间 内重复发送 N次标识信号, 这种重复为了应对资源碰撞的情况, 可以增加 UE被发现的概 率; 其中, 特定时间和 N均为重复参数, N例如可以设置为 2或者 3; 特定时间的具体时 间长度可以根据实际需要设置, 单位为毫秒量级, 例如可以为 10毫秒。
本发明实施例中, N为正整数。
重复发送标识信号的规则可以有如下几种:
一、 UE按照特定的子帧间隔来重复,例如 UE在第一次发送标识信号子帧之后的紧接 着的 N-1个标识信号子帧中, 都随机的选择一个预留给标识信号的频域资源, 来重复发送 标识信号;
例如, 可以预先配置子帧间隔为 1 , 则 UE初始发送标识信号之后, 可以在紧接着的 下一个标识信号子帧再次发送, 直至重复 N次。
二、 UE按照随机的子帧间隔来重复,例如 UE第一次发送标识信号的子帧和第二次发 送标识信号的子帧之间的间隔, 可以满足一定的随机分布, 例如 [0, M]的随机分布, 在满 足时域一定随机分布的基础上, 在第二次选定的标识信号子帧中, 随机的选择一个预留给 标识信号的频域资源, 重复发送标识信号, 直至第 N次重复。
其中, M的值可以根据实际需要设置, 例如可以设置为 10子帧。
本发明实施例中, M为正整数。
特别的, 因为这种重复是为了增加一次发现的概率, 重复周期可能比较短, 可以在毫 秒量级。
步骤 S404: 为了应对周围用户的变化, UE仍旧可以以一定的周期发送自己的标识信 号, 以便于新接近的用户发现自己, 其中 UE发送标识信号的最小周期应该满足网络侧的 配置限制, 以避免用户频繁发送标识信号, 造成对其它用户的千扰和碰撞概率上升, 整体 发现成功率下降的情况。 下一次 UE需要发送标识信号时, 则重复步骤 S402和步骤 S403。
实施例三: 监听方式
在标识信号的发送端, 参见图 7 , 发送标识信号的过程如下:
步骤 S501: UE从网络侧获得资源位置信息;
步骤 S502: UE在需要发送标识信号的时刻开始, UE对自此之后的 N个连续的标识 信号子帧进行监听, 根据监听结果, 执行下面的步骤 S503或 S504;
步骤 S503: 如果监听的结果为标识信号子帧空闲, 则 UE可以随机选择一个标识信号 资源, 发送自己的标识信号;
其中, 随机选取资源的原则可以参考实施例一中。 其中, 判断标识信号子帧空闲的原则可以有如下几种:
一、 连续 N个标识信号子帧都空闲, 其中, 一个标识信号子帧空闲, 可以定义为在该 子帧上的所有标识信号的频域资源中, 没有检测出任何其它用户的标识信号发送;
二、 连续 N个标识信号子帧都轻负荷, 其中, 标识信号子帧轻负荷, 可以定义为在该 子帧上的所有标识信号的频域资源中, 检测出其它用户的标识信号发送的资源数占整个上 行标识资源总数的比例小于一定的阈值;
例如: 在该子帧上的所有标识信号的频域资源中, 当检测出其它用户的标识信号发送 的资源数占整个上行标识资源总数的比例小于 50%时,确定连续 N个标识信号子帧都轻负 荷。
三、整体 N个标识信号子帧都轻负荷, 意味着, 在连续 N个标识信号子帧的所有预留 频域资源中, 检测出其它用户的标识信号发送的资源数占整个上行标识资源总数的比例小 于一定的阈值;
例如: 在连续 N个标识信号子帧的所有预留频域资源中, 检测出其它用户的标识信号 发送的资源数占整个上行标识资源总数的比例小于 50%时,确定整体 N个标识信号子帧都 轻负荷。
步骤 S504: 如果监听的结果为标识信号子帧没有处于空闲状态, 则 UE按照一定的规 则进行退避。
退避规则可以如下:
UE按照网络配置的退避参数,按照一定的随机分布,等待一定的时长,例如可以在 [0, T]时间内取均匀分布的随机数, 进行等待, 其中, T为正整数, 之后再进行步骤二; 或者, UE可以按照窗口机制, 不断地检测 N个连续的标识信号子帧, 直至满足空闲的条件 , 之后 UE可以直接进行步骤 S503;
其中, 窗口机制, 即 UE不断的维护一个窗口, 该窗口中总保持有 N个连续的标识信 号子帧, 计算该 N个标识信号子帧是否满足阈值要求, 如果满足, 则后续发送, 如果不满 足, 则将窗口中最老的一个标识信号子帧从窗口中剔除出去, 并将接下来最新的一个标识 信号子帧纳入窗口中, 重新进行 N个连续子帧的阈值判断。
步骤 S505: 为了应对周围用户的变化, UE仍旧可以以一定的周期发送自己的标识信 号, 以便于新接近的用户发现自己, 其中 UE发送标识信号的最小周期应该满足网络侧的 配置限制, 以避免用户频繁发送标识信号, 造成对其它用户的千扰和碰撞概率上升, 整体 发现成功率下降的情况。 下一次 UE有需要发送标识信号, 则重复步骤 S502至步骤 S503 或 S504。 实施例四: 监听 +重复方式
在标识信号的发送端, 参见图 8 , 发送标识信号的过程如下:
步骤 S601: UE从网络侧获得资源位置信息;
步骤 S602: UE从需要发送标识信号的时刻开始, UE对自此之后的 N个连续的标识 信号子帧进行监听, 根据监听结果, 执行下面的步骤 S603或 S604;
步骤 S603: 如果监听的结果为标识信号子帧空闲, 则 UE可以随机选择一个标识信号 资源, 发送自己的标识信号; UE在第一次发送标识信号之后, 在短时间内重复发送 M次 标识信号, 这种重复为了应对碰撞的情况, 可以增加被发现的概率;
其中, 随机选取资源的原则可以参考实施例一中。
其中, 判断标识信号子帧空闲的原则可以参考实施例三中。
其中, 重复的规则可以参考实施例二中。
步骤 S604: 如果监听的结果为标识信号子帧没有处于空闲状态, 则 UE按照一定的规 则进行退避;
退避规则可以参考实施例三中。
步骤 S605: 为了应对周围用户的变化, UE仍旧可以以一定的周期发送自己的标识信 号, 以便于新接近的用户发现自己, 其中 UE发送标识信号的最小周期应该满足网络侧的 配置限制, 以避免用户频繁发送标识信号, 造成对其它用户的千扰和碰撞概率上升, 整体 发现成功率下降的情况。 下一次 UE有需要发送标识信号, 则重复步骤 S602至步骤 S603 或 S604;
参见图 9, 本发明实施例提供的一种信号发送装置, 包括:
信息获取单元 11 , 用于从网络侧获取用于指示 UE发送该 UE的标识信号的资源位置 信息;
发送单元 12, 用于才 居资源位置信息确定出发送标识信号的特定资源, 并在特定资源 上发送该 UE的标识信号。
较佳地, 资源位置信息, 包括:
频域资源位置信息和时域资源位置信息。
较佳地, 信息获取单元 11还用于:
从网络侧获取用于指示 UE发送标识信号的参数信息;
发送单元 12, 具体用于:
根据资源位置信息以及参数信息确定出发送标识信号的特定资源, 并在特定资源上发 送该 UE的标识信号。 较佳地, 参数信息至少包括下列参数之一:
功率参数、 周期参数、 重复参数、 调制编码参数。
较佳地, 发送单元 12, 具体用于:
才艮据资源位置信息确定用于发送该 UE的标识信号的特定资源;
按照参数信息, 在特定资源上以广播方式发送该 UE的标识信号。
较佳地,发送单元 12按照参数信息,在特定资源上以广播方式发送该 UE的标识信号, 包括:
从需要发送标识信号的时刻开始, 按照资源位置信息的指示, 选取资源发送自身的标 识信号;
在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N 次标识信号, 其中, 特定时间和 N为重复参数。
较佳地, 发送单元 12在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在 特定时间内重复发送 N次标识信号, 包括:
按照特定的子帧间隔, 在特定时间内重复发送 N次标识信号; 或者,
按照随机的子帧间隔, 在特定时间内重复发送 N次标识信号。
较佳地,发送单元 12按照参数信息,在特定资源上以广播方式发送该 UE的标识信号, 包括:
从需要发送标识信号的时刻开始, 对自此之后的 N个连续的标识信号子帧进行监听; 如果标识信号子帧空闲, 则随机选择一个标识信号资源, 发送自己的标识信号。
较佳地, 发送单元 12, 还用于:
如果标识信号子帧不处于空闲状态, 按照预设的随机分布参数, 等待预设时长, 然后 再次从需要发送标识信号的时刻开始, 对自此之后的 N个连续的标识信号子帧进行监听; 或者,
按照窗口机制, 实时对 N个连续的标识信号子帧进行检测,直到 N个连续的标识信号 子帧空闲时, UE随机选择一个标识信号资源, 发送自己的标识信号。
较佳地, 发送单元 12, 确定标识信号子帧空闲, 包括:
连续 N个标识信号子帧都空闲; 或者,
连续 N个标识信号子帧的负荷都小于预设阈值; 或者,
整体 N个标识信号子帧的负荷都小于预设阈值。
参见图 10, 本发明实施例提供的一种信号接收装置, 包括:
信息获取单元 21 , 用于从网络侧获取用于接收 UE的标识信号所需的信息; 接收解码单元 22, 用于根据用于接收其他 UE 的标识信号所需的信息, 接收并解码
UE的标识信号。
较佳地, 用于接收其他 UE的标识信号所需的信息, 至少包括:
传输 UE的标识信号的资源位置信息和 UE的标识信号的调制编码信息。
较佳地, 接收解码单元 22, 具体用于:
根据资源位置信息, 接收 UE的标识信号;
根据调制编码信息, 对 UE的标识信号进行解码。
本发明实施例提供的一种信号传输装置, 即可以作为标识信号的接收装置, 也可以作 为标识信号的发送装置, 该装置包括:
信息获取单元, 用于从网络侧获取用于指示 UE发送该 UE的标识信号的资源位置信 息; 以及, 从网络侧获取用于接收 UE的标识信号所需的信息;
发送单元, 用于#>据资源位置信息确定出发送标识信号的特定资源, 并在特定资源上 发送 UE的标识信号;
接收解码单元,用于根据获取的用于接收 UE的标识信号所需的信息,接收并解码 UE 的标识信号。
如图 11所示, 本发明实施例提供的另一种信号发送装置包括: 第一处理器 1110和第 一发射器 1111。
第一处理器 1110, 用于从网络侧获取用于指示用户设备 UE发送该 UE的标识信号的 资源位置信息;
第一发射器 1111 , 用于根据所述资源位置信息确定出发送标识信号的特定资源, 并在 所述特定资源上发送该 UE的标识信号。
较佳地, 所述资源位置信息, 包括:
频域资源位置信息和时域资源位置信息。
较佳地, 第一处理器 1110还用于:
从网络侧获取用于指示 UE发送标识信号的参数信息;
第一发射器 1111 , 具体用于:
根据所述参数信息, 在所述特定资源上发送该 UE的标识信号。
较佳地, 所述参数信息至少包括下列参数之一:
功率参数、 周期参数、 重复参数和调制编码参数。
较佳地, 第一发射器 1111 , 具体用于:
才艮据所述资源位置信息确定用于发送该 UE的标识信号的特定资源; 按照所述参数信息确定出发送标识信号的特定资源, 并在所述特定资源上以广播方式 发送该 UE的标识信号。
较佳地, 第一发射器 1111按照所述参数信息, 在特定资源上以广播方式发送该 UE的 标识信号, 包括:
从需要发送标识信号的时刻开始, 按照资源位置信息的指示, 选取资源发送自身的标 识信号;
在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N 次标识信号, 其中, 所述特定时间和 N为所述重复参数;
其中, N为正整数。
较佳地, 第一发射器 1111具体用于:
在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N 次标识信号, 按照特定的子帧间隔或随机的子帧间隔, 在特定时间内重复发送 N次标识信 号。
较佳地, 第一发射器 1111具体用于:
按照所述参数信息, 在特定资源上以广播方式发送该 UE的标识信号, 从需要发送标 识信号的时刻开始,对自此之后的 N个连续的标识信号子帧进行监听;其中, N为正整数; 如果 N个连续的标识信号子帧空闲, 则随机选择一个标识信号资源, 发送自己的标识 信号。
较佳地, 第一发射器 1111 , 还用于:
如果标识信号子帧不处于空闲状态, 按照预设的随机分布参数, 等待预设时长, 然后 再次从需要发送标识信号的时刻开始, 对自此之后的 N个连续的标识信号子帧进行监听; 或者,
按照窗口机制, 实时对 N个连续的标识信号子帧进行检测,直到 N个连续的标识信号 子帧空闲时, UE随机选择一个标识信号资源, 发送自己的标识信号。
较佳地, 第一发射器 1111 , 确定标识信号子帧空闲, 包括:
连续 N个标识信号子帧都空闲; 或者,
连续 N个标识信号子帧的负荷都小于预设阈值; 或者,
整体 N个标识信号子帧的负荷都小于预设阈值。
如图 12所示, 本发明实施例提供的另一种信号接收装置包括: 第二处理器 1200和第 一接收器 1210。
第二处理器 1200, 用于从网络侧获取用于接收 UE的标识信号所需的信息; 第一接收器 1210, 用于根据所述用于接收其他 UE的标识信号所需的信息, 接收并解 码 UE的标识信号。
较佳地, 用于接收其他 UE的标识信号所需的信息, 包括:
传输所述 UE的标识信号的资源位置信息和所述 UE的标识信号的调制编码信息。 较佳地, 第一接收器 1210, 具体用于:
根据所述资源位置信息, 接收 UE的标识信号;
根据所述调制编码信息, 对所述 UE的标识信号进行解码。
如图 13所示, 本发明实施例提供的另一种信号传输装置包括: 第三处理器 1300、 第 二发射器 1310和第二接收器 1320。
第三处理器 1300, 用于从网络侧获取用于指示用户设备 UE发送该 UE的标识信号的 资源位置信息; 以及, 从网络侧获取用于接收 UE的标识信号所需的信息;
第二发射器 1310, 用于才 居所述资源位置信息确定出发送标识信号的特定资源, 并在 所述特定资源上发送 UE的标识信号;
第二接收器 1320, 用于根据所述获取的用于接收 UE的标识信号所需的信息, 接收并 解码 UE的标识信号。
本发明实施例提供的一种用户设备, 包括上述装置, 即用户设备即可以作为标识信号 的接收装置, 也可以作为标识信号的发送装置。
综上, 本发明实施例中, UE从网络侧获取发送标识信号的参数信息, 并在一定的规 则下完成标识信号的发送, 以便于周围的用户通过对标识信号的解析, 发现临近 UE , 因 此给出了 UE之间相互发现的技术方案, 有效避免碰撞, 并提高了发现的成功概率。
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, 本发明可釆用完全硬件实施例、 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, 本发明可釆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 可用存储介盾 (包括但不限于磁盘存储器和光学存储器等)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。
显然, 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和 范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内, 则本发明也意图包含这些改动和变型在内。

Claims

权 利 要 求
1、 一种信号发送方法, 其特征在于, 该方法包括:
用户设备 UE从网络侧获取用于指示该 UE发送该 UE的标识信号的资源位置信息; 所述 UE # ^据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特定资源 上发送该 UE的标识信号。
2、 根据权利要求 1所述的方法, 其特征在于, 所述资源位置信息, 包括:
频域资源位置信息和时域资源位置信息。
3、 根据权利要求 1所述的方法, 其特征在于, 该方法还包括:
所述 UE从网络侧获取用于指示 UE发送标识信号的参数信息;
所述 UE在所述特定资源上发送该 UE的标识信号, 包括:
所述 UE根据所述参数信息, 在所述特定资源上发送该 UE的标识信号。
4、 根据权利要求 3所述的方法, 其特征在于, 所述参数信息至少包括下列参数之一: 功率参数、 周期参数、 重复参数和调制编码参数。
5、根据权利要求 3所述的方法, 其特征在于, 所述 UE根据所述资源位置信息以及所 述参数信息确定出发送标识信号的特定资源,并在所述特定资源上发送该 UE的标识信号, 包括:
所述 UE 居所述资源位置信息确定用于发送该 UE的标识信号的特定资源; 所述 UE按照所述参数信息, 在所述特定资源上以广播方式发送该 UE的标识信号。
6、 根据权利要求 5所述的方法, 其特征在于, 所述 UE按照所述参数信息, 在所述特 定资源上以广播方式发送该 UE的标识信号, 包括:
所述 UE从需要发送标识信号的时刻开始, 按照资源位置信息的指示, 选取资源发送 自身的标识信号;
所述 UE在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重 复发送 N次标识信号, 其中, 所述特定时间和 N为所述重复参数。
7、 根据权利要求 6所述的方法, 其特征在于, 所述 UE在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N次标识信号, 包括:
所述 UE按照特定的子帧间隔或随机的子帧间隔, 在特定时间内重复发送 N次标识信 号;
其中, N为正整数。
8、 根据权利要求 5所述的方法, 其特征在于, 所述 UE按照所述参数信息, 在所述特 定资源上以广播方式发送该 UE的标识信号, 包括: 所述 UE从需要发送标识信号的时刻开始, 对自此之后的 N个连续的标识信号子帧进 行监听; 其中, N为正整数;
如果 N个连续的标识信号子帧空闲, 则所述 UE随机选择一个标识信号资源, 发送自 己的标识信号。
9、 根据权利要求 8 所述的方法, 其特征在于, 如果标识信号子帧不处于空闲状态, 该方法还包括:
所述 UE按照预设的随机分布参数, 等待预设时长, 然后再次从需要发送标识信号的 时刻开始, 对自此之后的 N个连续的标识信号子帧进行监听; 或者,
所述 UE按照窗口机制, 实时对 N个连续的标识信号子帧进行检测, 直到 N个连续的 标识信号子帧空闲时, UE随机选择一个标识信号资源, 发送自己的标识信号。
10、 根据权利要求 8或 9所述的方法, 其特征在于, 所述 UE确定标识信号子帧空闲 的步骤包括:
连续 N个标识信号子帧都空闲; 或者,
连续 N个标识信号子帧的负荷都小于预设阈值; 或者,
整体 N个标识信号子帧的负荷都小于预设阈值。
11、 一种信号接收方法, 其特征在于, 该方法包括:
用户设备 UE从网络侧获取用于接收其他 UE的标识信号所需的信息;
所述 UE根据所述用于接收其他 UE的标识信号所需的信息, 接收并解码其他 UE的 标识信号。
12、 根据权利要求 11所述的方法, 其特征在于, 所述用于接收其他 UE的标识信号所 需的信息, 包括:
传输所述其他 UE的标识信号的资源位置信息和所述其他 UE的标识信号的调制编码 信息。
13、 根据权利要求 12所述的方法, 其特征在于, 所述 UE根据所述用于接收其他 UE 的标识信号所需的信息, 接收并解码其他 UE的标识信号, 包括:
所述 UE根据所述资源位置信息, 接收其他 UE的标识信号;
所述 UE根据所述调制编码信息, 对所述其他 UE的标识信号进行解码。
14、 一种信号发送装置, 其特征在于, 该装置包括:
信息获取单元, 用于从网络侧获取用于指示用户设备 UE发送该 UE的标识信号的资 源位置信息;
发送单元, 用于 #>据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特 定资源上发送该 UE的标识信号。
15、 根据权利要求 14所述的装置, 其特征在于, 所述资源位置信息, 包括: 频域资源位置信息和时域资源位置信息。
16、 根据权利要求 14所述的装置, 其特征在于, 所述信息获取单元还用于: 从网络侧获取用于指示 UE发送标识信号的参数信息;
所述发送单元, 具体用于:
根据所述参数信息, 在所述特定资源上发送该 UE的标识信号。
17、 根据权利要求 16 所述的装置, 其特征在于, 所述参数信息至少包括下列参数之 功率参数、 周期参数、 重复参数和调制编码参数。
18、 根据权利要求 16所述的装置, 其特征在于, 所述发送单元, 具体用于: 才艮据所述资源位置信息确定用于发送该 UE的标识信号的特定资源;
按照所述参数信息确定出发送标识信号的特定资源, 并在所述特定资源上以广播方式 发送该 UE的标识信号。
19、 根据权利要求 18所述的装置, 其特征在于, 所述发送单元具体用于:
从需要发送标识信号的时刻开始, 按照资源位置信息的指示, 选取资源发送自身的标 识信号;
在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N 次标识信号, 其中, 所述特定时间和 N为所述重复参数;
其中, N为正整数。
20、 根据权利要求 19所述的装置, 其特征在于, 所述发送单元具体用于:
在第一次发送标识信号之后, 按照网络侧发送的重复参数, 在特定时间内重复发送 N 次标识信号, 按照特定的子帧间隔或随机的子帧间隔, 在特定时间内重复发送 N次标识信 号。
21、 根据权利要求 16所述的装置, 其特征在于, 所述发送单元具体用于:
按照所述参数信息, 在特定资源上以广播方式发送该 UE的标识信号, 从需要发送标 识信号的时刻开始,对自此之后的 N个连续的标识信号子帧进行监听;其中, N为正整数; 如果 N个连续的标识信号子帧空闲, 则随机选择一个标识信号资源, 发送自己的标识 信号。
22、 根据权利要求 21所述的装置, 其特征在于, 所述发送单元, 还用于:
如果标识信号子帧不处于空闲状态, 按照预设的随机分布参数, 等待预设时长, 然后 再次从需要发送标识信号的时刻开始, 对自此之后的 N个连续的标识信号子帧进行监听; 或者,
按照窗口机制, 实时对 N个连续的标识信号子帧进行检测,直到 N个连续的标识信号 子帧空闲时, UE随机选择一个标识信号资源, 发送自己的标识信号。
23、 根据权利要求 21或 22所述的装置, 其特征在于, 所述发送单元, 确定标识信号 子帧空闲, 包括:
连续 N个标识信号子帧都空闲; 或者,
连续 N个标识信号子帧的负荷都小于预设阈值; 或者,
整体 N个标识信号子帧的负荷都小于预设阈值。
24、 一种信号接收装置, 其特征在于, 该装置包括:
信息获取单元, 用于从网络侧获取用于接收 UE的标识信号所需的信息;
接收解码单元, 用于根据所述用于接收其他 UE的标识信号所需的信息, 接收并解码 UE的标识信号。
25、根据权利要求 24所述的装置, 其特征在于, 所述用于接收其他 UE的标识信号所 需的信息, 包括:
传输所述 UE的标识信号的资源位置信息和所述 UE的标识信号的调制编码信息。
26、 根据权利要求 25所述的装置, 其特征在于, 所述接收解码单元, 具体用于: 根据所述资源位置信息, 接收 UE的标识信号;
根据所述调制编码信息, 对所述 UE的标识信号进行解码。
27、 一种信号传输装置, 其特征在于, 该装置包括:
信息获取单元, 用于从网络侧获取用于指示用户设备 UE发送该 UE的标识信号的资 源位置信息; 以及, 从网络侧获取用于接收 UE的标识信号所需的信息;
发送单元, 用于 #>据所述资源位置信息确定出发送标识信号的特定资源, 并在所述特 定资源上发送 UE的标识信号;
接收解码单元, 用于根据所述获取的用于接收 UE的标识信号所需的信息, 接收并解 码 UE的标识信号。
28、 一种用户设备, 其特征在于, 所述用户设备包括权利要求 14-21任一权项所述的 装置。
PCT/CN2013/077401 2012-07-04 2013-06-18 一种信号传输方法及装置 WO2014005481A1 (zh)

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