WO2015139555A1 - 一种信号发送、接收方法及装置 - Google Patents

一种信号发送、接收方法及装置 Download PDF

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Publication number
WO2015139555A1
WO2015139555A1 PCT/CN2015/073604 CN2015073604W WO2015139555A1 WO 2015139555 A1 WO2015139555 A1 WO 2015139555A1 CN 2015073604 W CN2015073604 W CN 2015073604W WO 2015139555 A1 WO2015139555 A1 WO 2015139555A1
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Prior art keywords
signal
synchronization channel
configuration
signal format
information
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PCT/CN2015/073604
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English (en)
French (fr)
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陈文洪
高秋彬
赵锐
彭莹
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电信科学技术研究院
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Publication of WO2015139555A1 publication Critical patent/WO2015139555A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a signal transmitting and receiving method and apparatus.
  • the D2D (Device-to-Device) communication technology that is, the terminal direct-through technology, refers to a method in which a neighboring terminal can transmit data through a direct link in a short-range range without passing through a central node (ie, a base station). ) Forward, as shown in Figure 1.
  • D2D technology's short-range communication characteristics and direct communication methods have the following advantages:
  • the terminal short-distance direct communication mode can achieve higher data rate, lower delay and lower power consumption
  • D2D's direct communication method can adapt to the local data sharing requirements of services such as wireless P2P (peer-to-peer), and provide flexible data services;
  • services such as wireless P2P (peer-to-peer), and provide flexible data services;
  • D2D direct communication can utilize a large number of widely distributed communication terminals in the network to expand the coverage of the network.
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • LTE Long Term Evolution
  • the advantages of D2D technology can be fully utilized, and the control of LTE network can also overcome some problems of traditional D2D technology, such as uncontrollable interference.
  • the introduction of LTE D2D features will enable LTE technology to evolve from pure wireless mobile cellular communication technology to "Universal Connectivity Technology".
  • the UE User Equipment
  • the UE must first synchronize before performing D2D transmission.
  • the UE obtains a synchronization reference for transmitting the D2D signal according to the D2DSS (Device to Device Synchronization Signal) sent by the reference synchronization source.
  • the synchronization signal and the PD2DSCH Physical Device to Device Synchronization Channel
  • the synchronization signal may provide synchronization reference for other UEs.
  • the synchronization channel may carry some resource configuration information or synchronize.
  • Source information is generally the resource pool information used by the UE to send the D2D signal
  • the synchronization source information generally includes information about the type of the reference synchronization source of the UE, the current number of times of forwarding, and the like.
  • the general procedure for the UE to detect and transmit D2D signals includes:
  • the UE detects the synchronization signal and the synchronization channel
  • the UE obtains a resource pool used for signal detection by using other signaling indications or resource configuration information in the synchronization channel, and detects a synchronization signal and a D2D signal corresponding to the synchronization channel according to the resource pool and the synchronization reference.
  • the D2D signal is transmitted according to the synchronization reference obtained at the synchronization signal of the reference synchronization source and the resource pool used for signal transmission obtained by other signaling indication or resource configuration information in the synchronization channel.
  • FIG. 2 includes several typical D2D transmission scenarios: intra-cell, inter-cell, partial network coverage, and D2D transmission without network coverage.
  • the length of the CP (Cyclic Prefix) used for transmitting the D2D signal may be determined by the eNB (evolved NodeB, evolved base station), and the UE may detect the PSS (Packet). Switching System, packet switching system) to know the CP type of the current cell.
  • the size of the GP (Guard Interval) included in the D2D signal can also be configured by the eNB or by a predetermined fixed size.
  • GP refers to the guard interval introduced in the D2D signal, and the UE does not transmit the D2D signal in the GP.
  • the D2D signal sent by the UE in the network coverage generally includes the GP.
  • the two CP types used in LTE are a regular CP and an extended CP.
  • different D2D discovery types may also adopt different CP types.
  • the CP type or GP size adopted by the UE is generally configured by a pre-configured method or by eNB configuration information forwarded by the UE in the network coverage. If the D2D signal sent by the UE outside the network coverage does not interfere with the cellular signal, there may be no GP.
  • a D2D UE may want to detect different types of D2D signals transmitted by UEs from different coverage situations or different cells, and the CP types or GP sizes used by these D2D signals may be different. For example, as shown in FIG. 3, the CP type and GP size used by the in-cover UE1 and the out-of-cover UE2 may be different. For the receiving end UE3 and UE4, since the CP type or GP size of the currently detected D2D signal cannot be known, the signal detection cannot be performed accurately. If each test is detected separately based on the possible CP type or GP size, the complexity of the test is greatly increased.
  • UE1 and UE2 use the same resource pool to send D2D signals, but their CP types are different, and the signals between them are not orthogonal to OFDM (Orthogonal Frequency Division Multiplex). There is a serious interference.
  • UE2 sends D2D The last symbol of the signal is GP-free, and UE1 transmits the cellular signal on the adjacent cellular subframe just after the D2D subframe. Since the timing of the D2D signal is transmitted according to the downlink timing, the timing of the cellular signal is advanced, their The signals will have overlapping parts, causing mutual interference.
  • the types of CPs used may be different, and the CP type of the D2D synchronization signal may be different, so the UE cannot reuse the present.
  • the embodiment of the present application provides a signal sending and receiving method and device, so that the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that it is not necessary to traverse different signal format configurations and perform separate signal detection.
  • the detection can effectively reduce the detection complexity of the received signal.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel;
  • the first UE sends the signal format indication information to the second UE by using a synchronization channel when determining that the signal format indication information needs to be carried in the synchronization channel;
  • the first UE generates a signal that needs to be sent to the second UE according to the signal format configuration, and sends the signal to the second UE.
  • the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that the receiving end UE does not need to traverse different signal format configurations and perform detection separately when performing signal detection, which can effectively reduce the detection complexity of the received signal. degree.
  • the first UE determines a signal format configuration of the signal that needs to be sent to the second UE, including:
  • Manner 1 The first UE determines the signal format configuration of the signal that needs to be sent to the second UE according to the signal format configuration information indicated by the network side; or
  • Manner 2 The first UE determines the signal format configuration of the signal that needs to be sent to the second UE according to the signal format configuration information forwarded by the other UE; or
  • Manner 3 The first UE adopts a pre-configured signal format configuration as a signal format configuration of a signal that needs to be sent to the second UE.
  • the signal format is configured as a cyclic prefix CP type configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes Whether to use the length configuration of GP and / or GP.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel, including:
  • the first UE determines the CP type configuration of the signal to be sent to the second UE by using the mode one or the second mode, the first UE determines that the 1-bit CP type indication information needs to be adopted in the synchronization channel, indicating that the synchronization channel carries The CP type of the signal sent by the first UE to the second UE; or,
  • the first UE adopts one or more bits of CP type indication information in the synchronization channel, and indicates a CP type of a signal that is sent by the first UE to the second UE that is carried in the synchronization channel.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel, including:
  • the first UE indicates the GP configuration by using synchronization information and/or resource configuration information carried in the synchronization channel; or
  • the first UE adopts one or more bits of GP configuration indication information in the synchronization channel, and indicates a GP configuration of a signal sent by the first UE to the second UE.
  • the first UE sends the length indication information to the second UE by using the synchronization channel, where the first UE sends the length indication information to the second UE by using a preset signal format configuration by using the synchronization channel.
  • the first UE needs to send a signal to the second UE, and has at least one association relationship with the synchronization channel as follows:
  • a scrambling mode or demodulation reference signal configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the second UE detects a signal in the synchronization channel, and acquires information carried in the synchronization channel;
  • the second UE is configured to detect, according to the signal format configuration, a signal that is sent by the first UE corresponding to the synchronization channel to the second UE.
  • the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that it is not necessary to traverse different signal format configurations and perform detection separately when performing signal detection, which can effectively reduce the detection complexity of the received signal.
  • the second UE detects signals in the synchronization channel, including:
  • the second UE is configured to perform detection of signals in the synchronization channel based on a preset signal format configuration.
  • the signal in the synchronization channel comprises one or a combination of the following information:
  • Synchronization source information of the first UE
  • Signal format indication information of a signal transmitted by the first UE to the second UE is transmitted by the first UE to the second UE.
  • the signal sent by the first UE to the second UE has at least one relationship with the synchronization channel as follows:
  • a scrambling mode or a demodulation reference signal DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the second UE determines, according to information carried in the synchronization channel, a signal used by the first UE corresponding to the synchronization channel to be sent to the second UE.
  • CP type configuration including:
  • the preset CP type is used as the CP type configuration used by the first UE corresponding to the synchronization channel to send the signal to the second UE; if the synchronization channel includes the CP type indication information Determining, according to the CP type indication information, a CP type configuration adopted by the first UE corresponding to the synchronization channel to send a signal to the second UE;
  • the second UE determines, according to information carried in the synchronization channel, a signal used by the first UE corresponding to the synchronization channel to be sent to the second UE.
  • Signal format configuration including:
  • the second UE determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE has a GP, and when the GP exists, adopts a preset GP configuration; or ,
  • the second UE determines, according to the GP configuration indication information in the synchronization channel, a GP configuration adopted by the signal that the first UE corresponding to the synchronization channel sends to the second UE.
  • the second UE determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE is GP, including:
  • the second UE determines that the GP exists; otherwise, determines that there is no GP; or
  • the second UE determines that the GP exists; otherwise, determines that there is no GP; or
  • the second UE determines that the GP exists; otherwise, determines that the GP does not exist; or
  • the second UE directly determines whether there is a GP according to the GP indication information in the synchronization channel.
  • the method further comprises:
  • the second UE determines, according to the determined signal format configuration, a signal format configuration of a signal sent by the second UE to the first UE.
  • a first signal format configuration determining unit configured to determine a signal format configuration of a signal that the first UE needs to send to the second UE
  • a signal format indication information determining unit configured to determine signal format indication information that needs to be carried in the synchronization channel according to the signal format configuration
  • a signal format indication information sending unit configured to send the signal format indication information to the second UE by using a synchronization channel when determining that the signal format indication information needs to be carried in the synchronization channel;
  • a signal sending unit configured to generate, according to the signal format configuration, the signal that needs to be sent to the second UE, and send the signal to the second UE.
  • the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that it is not necessary to traverse different signal format configurations and perform detection separately when performing signal detection, which can effectively reduce the received signal. Detection complexity.
  • the first signal format configuration determining unit determines, according to one of the following manners, a signal format configuration of a signal that the first UE needs to send to the second UE:
  • Manner 1 According to the signal format configuration information indicated by the network side, determining a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 2 determining, according to signal format configuration information forwarded by another UE, a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 3 The signal format configuration of the signal that the first UE needs to send to the second UE is configured by using a pre-configured signal format.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the signal format indication information determining unit is specifically configured to:
  • the signal format configuration determining unit determines the CP type configuration of the signal that needs to be sent to the second UE by using the mode one or the second mode, it is determined that the 1-bit CP type indication information needs to be adopted in the synchronization channel, indicating that the synchronization channel is in the synchronization channel. Carrying the CP type of the signal sent by the first UE to the second UE; or
  • the CP type indication information of one or more bits is used in the synchronization channel, and indicates the CP type of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the signal format indication information determining unit is specifically configured to:
  • the GP configuration indication information of one or more bits is used in the synchronization channel, and indicates the GP configuration of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the signal format indication information sending unit when the length indication information is sent to the second UE by using the synchronization channel, is specifically configured to: send the length to the second UE by using a preset signal format configuration by using the synchronization channel. Instructions.
  • the first UE needs to send a signal to the second UE, and has at least one association relationship with the synchronization channel as follows:
  • a scrambling mode or a demodulation reference signal DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • a synchronization channel detecting unit configured to detect a signal in the synchronization channel, and acquire information carried in the synchronization channel
  • a second signal format configuration determining unit configured to determine, according to information carried in the synchronization channel, a signal format configuration used by a signal sent by the first UE corresponding to the synchronization channel to the second UE;
  • a signal detecting unit configured to detect, according to the signal format configuration, a signal that is sent by the first UE corresponding to the synchronization channel to the second UE.
  • the method is specifically configured to: perform detection of a signal in the synchronization channel based on a preset signal format configuration.
  • the signal in the synchronization channel comprises one or a combination of the following information:
  • Signal format indication information of a signal transmitted by the first UE to the second UE is transmitted by the first UE to the second UE.
  • the signal sent by the first UE to the second UE has at least one relationship with the synchronization channel as follows:
  • a scrambling mode or a demodulation reference signal DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the second signal format configuration determining unit is specifically configured to:
  • the preset CP type is used as the CP type configuration used by the first UE corresponding to the synchronization channel to send the signal to the second UE; if the synchronization channel includes the CP type indication information Determining, according to the CP type indication information, a CP type configuration adopted by the first UE corresponding to the synchronization channel to send a signal to the second UE;
  • the second signal format configuration determining unit is specifically configured to:
  • the second signal format configuration determining unit determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE is GP, specifically used for :
  • the type of the synchronization source indicated in the synchronization channel is a network side device, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or,
  • the synchronization channel includes resource configuration information of a signal sent by the first UE to the second UE, determining that there is a GP; otherwise determining that there is no GP; or
  • the type of the synchronization source indicated in the synchronization signal is a network side device, and the resource configuration information is included in the synchronization channel, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or
  • Whether or not the GP exists is directly determined according to the GP indication information in the synchronization channel.
  • the second signal format configuration determining unit is further configured to:
  • the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that it is not necessary to traverse different signal format configurations and perform detection separately when performing signal detection, which can effectively reduce the detection complexity of the received signal.
  • a first signal format configuration determining unit configured to determine a signal format configuration of a signal that the local UE needs to send to the opposite UE;
  • a signal format indication information determining unit configured to determine signal format indication information that needs to be carried in the synchronization channel according to the signal format configuration
  • a signal format indication information sending unit configured to: when the signal format indication information needs to be carried in the synchronization channel, send the signal format indication information to the opposite UE through the synchronization channel;
  • a signal sending unit configured to generate, according to the signal format configuration, a signal that the local UE needs to send to the peer UE, and send the signal to the peer UE;
  • a synchronization channel detecting unit configured to detect a signal in the synchronization channel, and acquire information carried in the synchronization channel
  • a second signal format configuration determining unit configured to determine, according to the information carried in the synchronization channel detected by the synchronization channel detecting unit, a signal format configuration used by the peer UE corresponding to the synchronization channel to send the signal to the local UE;
  • the signal detecting unit is configured to detect, according to the signal format configuration determined by the second signal format configuration determining unit, the signal sent by the opposite UE corresponding to the synchronization channel to the local UE.
  • the user equipment can function as both a transmitting UE and a receiving UE, and has the functions of the above-mentioned signal transmitting device and signal receiving device.
  • FIG. 2 is a schematic diagram of a D2D transmission scenario in the background art
  • FIG. 3 is a schematic diagram of a D2D transmission interference scenario in the background art
  • FIG. 4 is a schematic flowchart of a signal sending method according to an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a signal receiving method according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a signal sending apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a signal receiving apparatus according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another signal sending apparatus according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another signal receiving apparatus according to an embodiment of the present application.
  • the embodiment of the present application provides a signal sending and receiving method and device, so that the receiving end UE learns the signal format configuration of the signal sent by the transmitting end UE, so that it is not necessary to traverse different signal format configurations and perform separate signal detection.
  • the detection can effectively reduce the detection complexity of the received signal.
  • the CP and GP configurations may be different.
  • the receiving end For the receiving end to separately detect the D2D signals from these UEs, it is necessary to know the CP used for the D2D signal. Type or GP length. If the receiving end itself also needs to transmit the D2D signal, in order to ensure that the signal with the surrounding UE does not generate strong interference, it may be necessary to generate its own D2D signal according to the CP type or GP length of the signals of other UEs.
  • the UE directly or indirectly obtains the CP configuration or the GP configuration used by the corresponding D2D signal by using the information carried in the synchronization channel, and configures the CP configuration or the GP configuration for the corresponding D2D signal.
  • the first UE is the transmitting UE, and the second UE is the receiving UE.
  • the specific solution provided by the embodiment of the present application includes:
  • Step 1 The first UE determines a CP configuration or a GP configuration of the control signal or the data signal.
  • control signal here may be a signal carried by a control channel of D2D communication, where the data signal may be a D2D discovery signal or a data signal of D2D communication.
  • the control signal or the data signal that is, the signal that the first UE needs to send to the second UE.
  • the CP configuration or the GP configuration that is, the signal format configuration of the signal that the first UE needs to send to the second UE.
  • the CP is configured as a regular CP or an extended CP, and the GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the specific method for the first UE to determine the CP configuration includes one of the following methods:
  • Manner 1 The first UE receives the CP configuration information of the network side to determine the CP configuration; for example, the network side notifies the CP configuration information by using high layer signaling or broadcast signaling;
  • Manner 2 The first UE receives the CP configuration information forwarded by other UEs, and determines the CP configuration; for example, the other UEs forward the CP configuration information through the synchronization channel;
  • Manner 3 The first UE adopts the pre-configured CP type as the CP configuration. For example, for the UE outside the network coverage, the pre-configuration uses the extended CP as the CP configuration.
  • the specific method for the first UE to determine the GP configuration includes one of the following methods:
  • the first UE receives the GP configuration information of the network side to determine the GP configuration; for example, the network side notifies the GP configuration information by using high layer signaling or broadcast signaling, where the indication information of the GP size is included;
  • Manner 2 The first UE receives the GP configuration information forwarded by other UEs, and determines the GP configuration. For example, the other UEs forward the GP configuration information through the synchronization channel, where the indication information of the GP is used.
  • Manner 3 The first UE adopts the pre-configured GP size as the GP configuration.
  • Different pre-configured GPs can be used for different network connection situations. For example, for a UE in a network coverage, a GP size of one OFDM symbol is pre-configured as a GP configuration; for a UE outside the network coverage, if a synchronization channel of a UE within the network coverage is received, a GP of a pre-configured OFDM symbol is used. Size, otherwise, pre-configured does not use GP.
  • the CP is configured as a CP type, such as a regular CP or an extended CP; where the GP is configured as Whether the size of the GP and/or GP is adopted; for example, the GP size may be 0.5 OFDM symbols or 1 OFDM symbol or 2 OFDM symbols.
  • Step 2 The first UE determines the CP indication information that needs to be carried in the synchronization channel according to the determined CP configuration, or determines the GP indication information that needs to be carried in the synchronization channel according to the determined GP configuration, and the first UE determines that the When the signal format indication information is carried in the synchronization channel, the signal format indication information is sent to the second UE by using a synchronization channel.
  • a method for determining, by the first UE, the CP indication information that needs to be carried in the synchronization channel according to the determined CP configuration including:
  • Method 1 If the CP of the first UE is configured as a pre-configured CP type, it is determined that the CP indication information does not need to be carried in the synchronization channel; if the CP configuration of the first UE is obtained through the CP configuration information of the network side or forwarded by other UEs If the CP configuration information is obtained, it is determined that the 1-bit CP indication information needs to be used in the synchronization channel to indicate the CP type of the control signal or the data signal corresponding to the synchronization channel; specifically, the 1-bit information indicates that the conventional CP or the extended CP is used;
  • Method 2 Regardless of how the CP configuration is obtained, the first UE uses a number of bits of CP indication information in the synchronization channel to indicate the synchronization channel corresponding to the control signal or the CP type of the data signal. For example, a 1-bit information is used to indicate the use of a regular CP or an extended CP. For different control signals or data signals (such as D2D discovery signals and D2D communication signals) corresponding to the same synchronization channel, independent CP indication information may be used to indicate the CP type of the respective signals, or the same CP indication information may be used to indicate that the respective signals are the same. CP type.
  • the method for determining, by the first UE, the GP indication information that needs to be carried in the synchronization channel according to the determined GP configuration includes:
  • the first UE implicitly indicates the GP configuration by using other information carried in the synchronization channel, and does not carry independent GP indication information in the synchronization channel; or
  • the first UE uses a number of bits of GP indication information in the synchronization channel to indicate the GP configuration of the synchronization channel corresponding control signal or data signal.
  • independent GP indication information may be used to indicate respective GP lengths, or the same GP indication information may be used to indicate that each signal uses the same GP length.
  • a 1 or 2 bit GP indication information is used to indicate whether a GP and/or a GP size is used in the corresponding signal.
  • the 1-bit GP indication information indicates whether there is a GP (if present, the length is predefined);
  • 1-bit GP indication information indicating that the GP size is 0.5 OFDM symbol or 1 OFDM symbol
  • the 2-bit GP indication information indicates the following:
  • Indicating index Indicating content 00 No GP exists 01 GP size is 0.5 OFDM symbol 10 GP size is 1 OFDM symbol
  • 11 GP size is 2 OFDM symbols
  • the first UE sends the signal format indication information to the second UE by using the synchronization channel when determining that the signal format indication information needs to be carried in the synchronization channel, and the specific method includes: the first UE adopts a preset CP configuration by using the synchronization channel. Or the GP configuration sends the length indication information to the second UE.
  • the signals in the synchronization channel are transmitted by using an extended CP, or the signals in the synchronization channel are transmitted by using the GP length of one OFDM symbol.
  • the corresponding synchronization channels may be different for different types of control signals or data signals.
  • the corresponding synchronization channel is generally a synchronization channel between physical devices.
  • Step 3 The first UE generates and sends a control signal or a data signal according to the determined CP configuration or GP configuration.
  • control signal or the data signal has at least one association relationship with the foregoing synchronization channel:
  • the control channel/data channel is synchronized with the timing and frequency of the synchronization channel, or there is a predetermined offset; for example, the control channel/data channel is transmitted at the same timing as the synchronization channel, and the transmission frequency is also the same;
  • the physical resources used by the control channel/data channel have an agreed mapping relationship with the physical resources of the synchronization channel; for example, the control channel/data channel is transmitted in several subframes after N subframes sent by the synchronization channel, and N is a fixed value of the convention. ;
  • the physical resources used by the control channel/data channel are indicated by information in the synchronization channel; for example, the physical resource pool used by the control channel/data channel is indicated by resource configuration information in the synchronization channel;
  • the control channel/data channel scrambling mode or Demodulation Reference Signal (DMRS) configuration is indicated by information in the synchronization channel; for example, the control channel/data channel is added according to the synchronization identifier (ID) in the synchronization channel. Interference or generation of DMRS sequences.
  • ID synchronization identifier
  • Step 4 The second UE detects a signal in the synchronization channel, and acquires information carried in the synchronization channel.
  • the method for the second UE to detect a signal in the synchronization channel includes the second UE performing detection of a signal in the synchronization channel based on a predefined CP configuration or a GP configuration. For example, the signals in the synchronization channel are detected based on the assumption of the extended CP, or the signals in the synchronization channel are detected based on the GP length of one OFDM symbol.
  • the information carried in the synchronization channel includes one or a combination of the following:
  • Synchronization source information of the synchronization channel such as a synchronization source type of the transmitting UE
  • Resource configuration information of a signal sent by the first UE to the second UE such as resource pool information used by the first UE to send a signal
  • the CP indication information of the signal sent by the first UE to the second UE for example, for indicating the CP type
  • the GP indication information of the signal sent by the first UE to the second UE such as for indicating whether there is a GP, and/or a GP size.
  • Step 5 The second UE determines, according to information in the synchronization channel, a CP configuration or a GP configuration used for a control signal or a data signal corresponding to the synchronization channel.
  • control signal here may be a signal carried by a control channel of D2D communication, where the data signal may be a D2D discovery signal or a data signal of D2D communication.
  • control signal or the data signal has at least one association relationship with the foregoing synchronization channel:
  • the control channel/data channel is synchronized with the timing and frequency of the synchronization channel, or there is a predetermined offset; for example, the control channel/data channel is transmitted at the same timing as the synchronization channel, and the transmission frequency is also the same;
  • the physical resources used by the control channel/data channel have an agreed mapping relationship with the physical resources of the synchronization channel; for example, the control channel/data channel is transmitted in several subframes after N subframes sent by the synchronization channel, and N is a fixed value of the convention. ;
  • the physical resources used by the control channel/data channel are indicated by information in the synchronization channel; for example, the physical resource pool used by the control channel/data channel is indicated by resource configuration information in the synchronization channel;
  • the scrambling mode or DMRS configuration of the control channel/data channel is indicated by information in the synchronization channel; for example, the scrambling of the control channel/data channel or the generation of the DMRS sequence is performed according to the synchronization identification (ID) in the synchronization channel.
  • ID synchronization identification
  • the second UE determines the CP configuration used by the corresponding signal according to the information in the synchronization channel, and the specific determining method includes:
  • the synchronization type channel does not include the CP type indication information, the pre-configured CP type is used as the CP configuration; if the synchronization channel includes the CP type indication information, the CP configuration used by the corresponding signal is determined according to the CP type indication information; for example, synchronization
  • the 1-bit information in the channel indicates the use of a regular CP or an extended CP.
  • independent CP indication information may be used to indicate respective CP types, or the same CP indication information may be used to indicate the same CP of each signal. Types of.
  • the CP configuration used for the corresponding signal is directly determined according to the CP type indication information in the synchronization channel; for example, the 1-bit information in the synchronization channel indicates that the conventional CP or the extended CP is used.
  • the 1-bit information in the synchronization channel indicates that the conventional CP or the extended CP is used.
  • independent CP indication information may be used to indicate respective CP types, or the same CP indication information may be used to indicate that each signal uses the same CP type.
  • the determining, by the second UE, the GP configuration used by the corresponding signal according to the information in the synchronization channel specifically includes:
  • the UE determines whether the corresponding signal has a GP according to the GP indication information or other information in the synchronization channel. If a GP is present, a predefined GP length can be used.
  • the synchronization channel contains resource configuration information, it is determined that there is a GP; otherwise, it is determined that there is no GP; or
  • the synchronization source type indicated in the synchronization signal is a network side device, such as an eNB, and the resource configuration information is included in the synchronization channel, it is determined that there is a GP; otherwise, it is determined that there is no GP.
  • Determining whether there is a GP directly according to the GP indication information in the synchronization channel for example, a 1-bit GP indication information in the synchronization channel indicates whether there is a GP; different control signals or data signals corresponding to the same synchronization channel (such as D2D discovery signal and D2D) The communication signal) may be indicated by separate GP indication information, or the same GP indication information may be used to indicate that each signal adopts the same GP length.
  • the UE determines the GP length of the corresponding signal according to the GP indication information in the synchronization channel.
  • independent GP indication information may be used to indicate or adopt the same GP indication information. For example, for a data signal:
  • the 1-bit GP indication information indicates that the GP size is 0.5 OFDM symbol or 1 OFDM symbol;
  • the 2-bit GP indication information indicates the following:
  • Indicating index Indicating content 00 No GP exists 01 GP size is 0.5 OFDM symbol 10 GP size is 1 OFDM symbol 11 GP size is 2 OFDM symbols
  • Step 6 The second UE detects a control signal or a data signal corresponding to the synchronization channel according to the determined CP configuration or GP configuration.
  • the second UE may further determine a CP or GP configuration of a control signal or a data signal sent by itself according to the determined CP configuration or GP configuration.
  • Embodiment 1 The first UE and the second UE are both D2D UEs in the network coverage, the first UE sends a discovery signal, and the second UE discovers the first UE by using the discovery signal.
  • the first UE determines a CP type configuration used by its own discovery signal, and the CP type configuration is notified to each UE by the eNB through broadcast signaling. It is assumed that the CP type of the first UE is configured as a regular CP.
  • the first UE uses a 1-bit CP indication information in the synchronization channel (PD2DSCH) to indicate the CP type used for its discovery signal; where 0 represents a regular CP, 1 represents an extended CP, and the current indication information is 0.
  • the signals in the synchronization channel and the corresponding synchronization signals are generated and transmitted using a predefined CP type, assuming an extended CP.
  • the synchronization channel further indicates a physical resource pool configured by the eNB for the first UE to send the discovery signal.
  • the first UE generates a discovery signal based on the regular CP, and transmits a discovery signal on the resources in the physical resource pool configured by the eNB; the discovery signal uses the same transmission timing and transmission frequency as the synchronization signal/synchronization channel.
  • the second UE detects the synchronization signal of the first UE and the signal in the corresponding synchronization channel, acquires a synchronization reference (including timing information and frequency point information), and CP type indication information and resource configuration information carried in the synchronization channel; wherein, the second The UE performs synchronization channel detection based on a predefined extended CP type.
  • the second UE according to the CP type indication information in the synchronization channel (the bit indication is 0), knows that the CP of the discovery signal corresponding to the synchronization channel is configured as a regular CP.
  • the second UE learns, according to the resource configuration information in the synchronization channel, a resource region that detects a discovery signal of the first UE;
  • the second UE detects a discovery signal of the first UE corresponding to the synchronization channel of the first UE in the determined resource region based on the determined normal CP type.
  • Embodiment 2 The first UE is a D2D UE within the network coverage, and the second UE is a D2D UE outside the network coverage, where the first UE transmits a D2D broadcast communication signal, and the second UE receives the D2D broadcast communication signal.
  • the first UE determines the GP configuration used for its own broadcast communication signal according to its own network coverage. Since the first UE is within the network coverage, the GP used for broadcasting the communication signal is a GP of one OFDM symbol length and the last symbol in the subframe.
  • the first UE implicitly indicates the GP configuration used for the broadcast communication signal by using the synchronization source information and the resource configuration information carried in the synchronization channel (PD2DSCH), and does not carry the independent GP indication information in the synchronization channel.
  • the first UE sends the synchronization source information and the resource configuration information in the synchronization channel, where the synchronization source information indicates that the synchronization source type of the first UE is an eNB, and the resource configuration information indicates a resource pool used for transmission of the broadcast communication signal of the first UE.
  • the signals in the synchronization channel are all generated and transmitted based on the GP length of a predefined one OFDM symbol, that is, the last symbol does not transmit a signal.
  • the first UE generates and transmits a broadcast communication signal corresponding to the synchronization channel according to the GP configuration of one OFDM symbol length. Specifically, the last OFDM symbol of the broadcast communication signal is used as a GP in which no signal is transmitted.
  • the broadcast communication signal uses the same transmission frequency as the synchronization signal/synchronization channel, but there is a predetermined offset in the timing between them.
  • the second UE detects the synchronization signal of the first UE and the signal in the synchronization channel, and acquires synchronization reference information and resource configuration information carried in the synchronization channel.
  • the second UE performs the detection of the synchronization channel based on the GP length of the predefined one OFDM symbol.
  • the second UE learns that the synchronization source of the first UE is an eNB according to the synchronization source information in the synchronization channel, and the resource configuration information is carried in the synchronization channel, so that the GP exists in the broadcast communication signal of the first UE, and the length is a predefined length. (1 OFDM symbol).
  • the second UE learns the physical resources used by the first UE for the broadcast communication signal from the resource configuration information. Source area.
  • the second UE detects a broadcast communication signal of the first UE corresponding to the synchronization channel of the first UE, that is, a broadcast communication signal, based on the determined GP configuration of one OFDM symbol length, and the determined synchronization reference within the determined physical resource region.
  • the last OFDM symbol does not send a signal;
  • the second UE determines, according to other information in the synchronization channel, that the first UE is a UE within the network coverage, and further configures the GP configuration of the first UE as a GP configuration of the broadcast communication signal of the first UE, that is, the broadcast communication signal of the second UE is also based on one GP length generation of OFDM symbols.
  • a signal sending method provided by an embodiment of the present application includes the following steps:
  • the first UE determines a signal format configuration of a signal that needs to be sent to the second UE.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel.
  • the first UE sends the signal format indication information to the second UE by using a synchronization channel when determining that the signal format indication information needs to be carried in the synchronization channel.
  • the first UE generates a signal that needs to be sent to the second UE according to the signal format configuration, and sends the signal to the second UE.
  • the first UE determines a signal format configuration of the signal that needs to be sent to the second UE, including:
  • Manner 1 The first UE determines the signal format configuration of the signal that needs to be sent to the second UE according to the signal format configuration information indicated by the network side; or
  • Manner 2 The first UE determines the signal format configuration of the signal that needs to be sent to the second UE according to the signal format configuration information forwarded by the other UE; or
  • Manner 3 The first UE adopts a pre-configured signal format configuration as a signal format configuration of a signal that needs to be sent to the second UE.
  • the signal format is configured as a cyclic prefix CP type configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel, including:
  • the first UE determines the CP type configuration of the signal to be sent to the second UE by using the mode one or the second mode, the first UE determines that the 1-bit CP type indication information needs to be adopted in the synchronization channel, indicating that the synchronization channel carries The CP type of the signal sent by the first UE to the second UE; or,
  • the first UE adopts one or more bits of CP type indication information in the synchronization channel, indicating that the synchronization channel carries The CP type of the signal transmitted by the first UE to the second UE.
  • the first UE determines, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel, including:
  • the first UE indicates the GP configuration by using information carried in the synchronization channel;
  • the first UE adopts one or more bits of GP configuration indication information in the synchronization channel, and indicates a GP configuration of a signal that is sent by the first UE to the second UE that is carried in the synchronization channel.
  • the first UE sends the length indication information to the second UE by using the synchronization channel, where the first UE sends the length indication information to the second UE by using a preset signal format configuration by using the synchronization channel.
  • the first UE needs to send a signal to the second UE, and has at least one association relationship with the synchronization channel as follows:
  • a scrambling mode or a DMRS (Demodulation Reference Symbol) configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • a signal receiving method provided by an embodiment of the present application includes the following steps:
  • the second UE detects a signal in the synchronization channel, and acquires information carried in the synchronization channel.
  • the second UE determines, according to the information carried in the synchronization channel, a signal format configuration used by the first UE corresponding to the synchronization channel to send a signal to the second UE.
  • the second UE is configured to detect, according to the signal format configuration, a signal that is sent by the first UE corresponding to the synchronization channel to the second UE.
  • the second UE detects signals in the synchronization channel, including:
  • the second UE is configured to perform detection of signals in the synchronization channel based on a preset signal format configuration.
  • the signal in the synchronization channel comprises one or a combination of the following information:
  • Synchronization source information of the first UE
  • Signal format indication information of a signal transmitted by the first UE to the second UE is transmitted by the first UE to the second UE.
  • the signal sent by the first UE to the second UE is associated with the synchronization channel by at least one of the following system:
  • a scrambling mode or DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the second UE determines, according to information carried in the synchronization channel, a signal used by the first UE corresponding to the synchronization channel to be sent to the second UE.
  • CP type configuration including:
  • the preset CP type is used as the CP type configuration used by the first UE corresponding to the synchronization channel to send the signal to the second UE; if the synchronization channel includes the CP type indication information Determining, according to the CP type indication information, a CP type configuration adopted by the first UE corresponding to the synchronization channel to send a signal to the second UE;
  • the second UE determines, according to information carried in the synchronization channel, a signal used by the first UE corresponding to the synchronization channel to be sent to the second UE.
  • Signal format configuration including:
  • the second UE determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE has a GP, and when the GP exists, adopts a preset GP configuration; or ,
  • the second UE determines, according to the GP configuration indication information in the synchronization channel, a GP configuration adopted by the signal that the first UE corresponding to the synchronization channel sends to the second UE.
  • the second UE determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE is GP, including:
  • the second UE determines that the GP exists; otherwise, determines that there is no GP; or
  • the second UE determines that the GP exists; otherwise, determines that the GP does not exist; or
  • the second UE determines that the GP exists; otherwise, determines that the GP does not exist; or
  • the second UE directly determines whether there is a GP according to the GP indication information in the synchronization channel.
  • the method further comprises:
  • the second UE determines, according to the determined signal format configuration, a signal format configuration of a signal sent by the second UE to the first UE.
  • a signal sending apparatus provided by an embodiment of the present application includes:
  • a first signal format configuration determining unit 11 configured to determine a signal format configuration of a signal that the first UE needs to send to the second UE;
  • the signal format indication information determining unit 12 is configured to determine, according to the signal format configuration, signal format indication information that needs to be carried in the synchronization channel;
  • the signal format indication information sending unit 13 is configured to: when the signal format indication information needs to be carried in the synchronization channel, send the signal format indication information to the second UE by using a synchronization channel;
  • the signal sending unit 14 is configured to generate the signal that needs to be sent to the second UE according to the signal format configuration, and send the signal to the second UE.
  • the first signal format configuration determining unit determines, according to one of the following manners, a signal format configuration of a signal that the first UE needs to send to the second UE:
  • Manner 1 According to the signal format configuration information indicated by the network side, determining a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 2 determining, according to signal format configuration information forwarded by another UE, a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 3 The signal format configuration of the signal that the first UE needs to send to the second UE is configured by using a pre-configured signal format.
  • the signal format is configured as a cyclic prefix CP type configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the signal format indication information determination form is specifically used for:
  • the signal format configuration determining unit determines the CP type configuration of the signal that needs to be sent to the second UE by using the mode one or the second mode, it is determined that the 1-bit CP type indication information needs to be adopted in the synchronization channel, indicating that the synchronization channel is in the synchronization channel. Carrying the CP type of the signal sent by the first UE to the second UE; or
  • the CP type indication information of one or more bits is used in the synchronization channel, and indicates the CP type of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the signal format indication information determining unit is specifically configured to:
  • the GP configuration indication information of one or more bits is used in the synchronization channel, and indicates the GP configuration of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the signal format indication information sending unit when the length indication information is sent to the second UE by using the synchronization channel, is specifically configured to: send the length to the second UE by using a preset signal format configuration by using the synchronization channel. Instructions.
  • the first UE needs to send a signal to the second UE, and has at least one association relationship with the synchronization channel as follows:
  • a scrambling mode or DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • a signal receiving apparatus provided by an embodiment of the present application includes:
  • the synchronization channel detecting unit 21 is configured to detect a signal in the synchronization channel, and acquire information carried in the synchronization channel;
  • a second signal format configuration determining unit 22 configured to determine, according to information carried in the synchronization channel, a signal format configuration used by a signal sent by the first UE corresponding to the synchronization channel to the second UE;
  • the signal detecting unit 23 is configured to detect, according to the signal format configuration, a signal that is sent by the first UE corresponding to the synchronization channel to the second UE.
  • the synchronization channel detecting unit detects the signal in the synchronization channel, it is specifically used to: based on a preset letter The number format configuration is used to detect signals in the synchronization channel.
  • the signal in the synchronization channel comprises one or a combination of the following information:
  • Synchronization source information of the first UE
  • Signal format indication information of a signal transmitted by the first UE to the second UE is transmitted by the first UE to the second UE.
  • the signal sent by the first UE to the second UE has at least one relationship with the synchronization channel as follows:
  • a scrambling mode or DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the second signal format configuration determining unit is specifically configured to:
  • the preset CP type is used as the CP type configuration used by the first UE corresponding to the synchronization channel to send the signal to the second UE; if the synchronization channel includes the CP type indication information Determining, according to the CP type indication information, a CP type configuration adopted by the first UE corresponding to the synchronization channel to send a signal to the second UE;
  • the second signal format configuration determining unit is specifically configured to:
  • the second signal format configuration determining unit determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE is GP, specifically used for :
  • the type of the synchronization source indicated in the synchronization channel is a network side device, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or,
  • the synchronization channel includes resource configuration information of a signal sent by the first UE to the second UE, determining that there is a GP; otherwise determining that there is no GP; or
  • the type of the synchronization source indicated in the synchronization signal is a network side device, and the resource configuration information is included in the synchronization channel, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or
  • Whether or not the GP exists is directly determined according to the GP indication information in the synchronization channel.
  • the second signal format configuration determining unit is further configured to:
  • a user equipment provided by an embodiment of the present application includes the above-mentioned signal transmitting apparatus of FIG. 6 and/or the signal receiving apparatus of FIG. 7.
  • another signal sending apparatus provided by the embodiment of the present application includes:
  • the processor 801 is configured to read a program in the memory 804 and perform the following process:
  • the control transceiver 802 sends the signal format indication information to the second UE through the synchronization channel; generates the signal that needs to be sent to the second UE according to the signal format configuration, and controls the transceiver 802 to send to the second UE. ;
  • the transceiver 802 is configured to receive and transmit data under the control of the processor 801.
  • the processor 801 determines, according to one of the following manners, a signal format configuration of a signal that the first UE needs to send to the second UE:
  • Manner 1 According to the signal format configuration information indicated by the network side, determining a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 2 determining, according to signal format configuration information forwarded by another UE, a signal format configuration of a signal that the first UE needs to send to the second UE; or
  • Manner 3 The signal format configuration of the signal that the first UE needs to send to the second UE is configured by using a pre-configured signal format.
  • the signal format is configured as a cyclic prefix CP type configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the processor 801 is specifically configured to:
  • the CP type indication information of one or more bits is used in the synchronization channel, and indicates the CP type of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the processor 801 is specifically configured to:
  • the GP configuration indication information of one or more bits is used in the synchronization channel, and indicates the GP configuration of the signal sent by the first UE to the second UE carried in the synchronization channel.
  • the processor 801 is configured to send the length indication information to the second UE by using a preset signal format configuration on the synchronization channel when the length indication information is sent to the second UE by using the synchronization channel.
  • the first UE needs to send a signal to the second UE, and has at least one association relationship with the synchronization channel as follows:
  • a scrambling mode or DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • bus 800 may include any number of interconnected buses and bridges, and bus 800 will include one or more processors and memory 804 represented by general purpose processor 801. The various circuits of the memory are linked together.
  • the bus 800 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 803 provides an interface between bus 800 and transceiver 802.
  • Transceiver 802 can be an element or a plurality of elements, such as multiple receivers and transmitters, providing means for communicating with various other devices on a transmission medium. For example, transceiver 802 receives external data from other devices. Transceiver 802 is used to process The processed data of the device 801 is sent to other devices.
  • a user interface 805 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 801 is responsible for managing the bus 800 and the usual processing, running the general purpose operating system as described above.
  • the memory 804 can be used to store data used by the processor 801 when performing operations.
  • the processor 801 may be a CPU (Central Embedded Device), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device). , complex programmable logic devices).
  • CPU Central Embedded Device
  • ASIC Application Specific Integrated Circuit
  • FPGA Field-Programmable Gate Array
  • CPLD Complex Programmable Logic Device
  • another signal receiving apparatus provided by an embodiment of the present application includes:
  • the processor 901 is configured to read a program in the memory 904 and perform the following process:
  • the signal in the synchronization channel is detected by the transceiver 902, and the information carried in the synchronization channel is obtained.
  • the signal format used by the first UE corresponding to the synchronization channel to be sent to the second UE is determined according to the information carried in the synchronization channel. And configured to detect, according to the signal format configuration, a signal that is sent by the first UE corresponding to the synchronization channel to the second UE.
  • the transceiver 902 is configured to receive and transmit data under the control of the processor 901.
  • the processor 901 when the processor 901 detects a signal in the synchronization channel, the processor 901 is specifically configured to perform detection of a signal in the synchronization channel based on a preset signal format configuration.
  • the signal in the synchronization channel comprises one or a combination of the following information:
  • Synchronization source information of the first UE
  • Signal format indication information of a signal transmitted by the first UE to the second UE is transmitted by the first UE to the second UE.
  • the signal sent by the first UE to the second UE has at least one relationship with the synchronization channel as follows:
  • a scrambling mode or DMRS configuration for transmitting a channel of a signal that the first UE needs to transmit to the second UE is indicated by information in the synchronization channel.
  • the signal format is configured as a cyclic prefix CP configuration or a signal protection interval GP configuration.
  • the cyclic prefix is configured as a regular CP or an extended CP
  • the signal protection interval GP configuration includes whether to adopt a length configuration of the GP and/or GP.
  • the processor 901 is specifically configured to:
  • the preset CP type is used as the CP type configuration used by the first UE corresponding to the synchronization channel to send the signal to the second UE; if the synchronization channel includes the CP type indication information Determining, according to the CP type indication information, a CP type configuration adopted by the first UE corresponding to the synchronization channel to send a signal to the second UE;
  • the processor 901 is specifically configured to:
  • the processor 901 determines, according to the GP configuration indication information or other information in the synchronization channel, whether the signal sent by the first UE corresponding to the synchronization channel to the second UE is GP, specifically used for:
  • the type of the synchronization source indicated in the synchronization channel is a network side device, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or,
  • the synchronization channel includes resource configuration information of a signal sent by the first UE to the second UE, determining that there is a GP; otherwise determining that there is no GP; or
  • the type of the synchronization source indicated in the synchronization signal is a network side device, and the resource configuration information is included in the synchronization channel, it is determined that the GP exists; otherwise, it is determined that the GP does not exist; or
  • Whether or not the GP exists is directly determined according to the GP indication information in the synchronization channel.
  • the processor 901 is further configured to:
  • bus 900 may include any number of interconnected buses and bridges, and bus 900 will include one or more processors and memory 904 represented by general purpose processor 901. The various circuits of the memory are linked together.
  • the bus 900 can also link various other circuits, such as peripherals, voltage regulators, and power management circuits, as is known in the art, and therefore, will not be further described herein.
  • Bus interface 903 provides an interface between bus 900 and transceiver 902.
  • the transceiver 902 can be one component or multiple components, such as multiple receivers and transmitters, provided for use on transmission media and various He is the unit that communicates with the device. For example, transceiver 902 receives external data from other devices.
  • the transceiver 902 is configured to send the processed data of the processor 901 to other devices.
  • a user interface 905 can also be provided, such as a keypad, display, speaker, microphone, joystick.
  • the processor 901 is responsible for managing the bus 900 and the usual processing, running a general purpose operating system as described above.
  • the memory 904 can be used to store data used by the processor 901 in performing operations.
  • the processor 901 can be a CPU, an ASIC, an FPGA, or a CPLD.
  • a user equipment provided by an embodiment of the present application includes the above-mentioned signal transmitting apparatus of FIG. 8 and/or the signal receiving apparatus of FIG.
  • the UE directly or indirectly obtains the CP configuration or the GP configuration used by the corresponding D2D signal by using the information carried in the synchronization channel, and uses the CP configuration or the GP configuration for the CP configuration or the GP configuration.
  • the interference of its own D2D signals to other signals is reduced.
  • the UE does not need to traverse different CP configurations for detection, which can effectively reduce the detection complexity of the receiving UE.
  • the UE After the UE knows the GP configuration of the D2D signal, the UE can directly detect the D2D signal. The GP performs rate-matching and is consistent with the transmitting end to ensure the accuracy of the D2D signal detection. After the UE learns the configuration of the CP or GP used by the surrounding cellular UE or the D2D UE, the GP can be configured according to the CP or GP configuration. Its own D2D signal, thereby reducing interference to surrounding cellular UEs or D2D UEs.
  • embodiments of the present application can be provided as a method, system, or computer program product.
  • the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware.
  • the application 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 and optical storage, etc.) including computer usable program code.
  • 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 include instructions.
  • the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a 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.

Abstract

本申请公开了一种信号发送、接收方法及装置，用以使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。本申请提供的一种信号发送方法包括：第一UE确定需要发送给第二UE的信号的信号格式配置；第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；第一UE根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。

Description

一种信号发送、接收方法及装置
本申请要求在2014年3月20日提交中国专利局、申请号为201410105778.9、申请名称为“一种信号发送、接收方法及装置”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
本申请涉及通信技术领域，尤其涉及一种信号发送、接收方法及装置。
背景技术
D2D(Device-to-Device，设备到设备)通信技术，即终端直通技术，是指邻近的终端可以在近距离范围内通过直连链路进行数据传输的方式，不需要通过中心节点(即基站)进行转发，如图1所示。D2D技术本身的短距离通信特点和直接通信方式使其具有如下优势：
终端近距离直接通信方式可实现较高的数据速率、较低的延迟和较低的功耗；
利用网络中广泛分布的用户终端以及D2D通信链路的短距离特点，可以实现频谱资源的有效利用；
D2D的直接通信方式能够适应如无线P2P(点对点)等业务的本地数据共享需求，提供具有灵活适应能力的数据服务；
D2D直接通信能够利用网络中数量庞大且分布广泛的通信终端以拓展网络的覆盖范围。
LTE(Long Term Evolution，长期演进)D2D技术是指工作在LTE授权频段上的受LTE网络控制的D2D发现和通信过程。一方面可以充分发挥D2D技术的优势，同时LTE网络的控制也可以克服传统D2D技术的一些问题，例如干扰不可控等。LTE D2D特性的引入将使LTE技术从单纯的无线移动蜂窝通信技术向着“通用连接技术”(Universal Connectivity Technology)的方向演进。
UE(User Equipment，用户设备)在进行D2D传输前，首先要进行同步。UE根据参考同步源发送的D2DSS(Device to Device Synchronization Signal，设备间同步信号)来获得发送D2D信号的同步参考。UE发送D2D信号之前，可能会先发送同步信号和PD2DSCH(Physical Device to Device Synchronization Channel，物理设备间同步信道)，其中同步信号可以为其他UE提供同步参考，同步信道可以携带一些资源配置信息或者同步源信息。资源配置信息一般是该UE发送D2D信号所用的资源池信息，同步源信息一般包含该UE的参考同步源的类型，当前的转发次数等信息。
UE检测和发送D2D信号的一般流程包括：
UE检测同步信号和同步信道；
在检测到同步信号和同步信道后，根据同步信号确定接收的同步参考，并从同步信道中获得资源配置信息或者同步源信息；
UE通过其他信令指示或者同步信道中的资源配置信息获得信号检测所用的资源池，并根据此资源池和同步参考检测同步信号和同步信道对应的D2D信号。
UE需要发送D2D信号时，根据参考同步源的同步信号处获得的同步参考，以及通过其他信令指示或者同步信道中的资源配置信息获得的信号发送所用的资源池，进行D2D信号的发送。
参见图2，图2中包含了几种典型的D2D传输场景：小区内、小区间、部分网络覆盖和无网络覆盖的D2D传输。对于小区内或者小区间的D2D传输，由于UE在网络覆盖内，其发送D2D信号所用的CP(Cyclic Prefix，循环前缀)长度可以由eNB(evolved NodeB，演进基站)决定，UE通过检测PSS(Packet Switching System，分组交换系统)来获知当前小区的CP类型。D2D信号中所包含的GP(保护间隔)的大小也可以由eNB配置或者采用预先约定的固定大小。这里GP是指D2D信号中引入的保护间隔，在GP内UE不发送D2D信号。为了防止对蜂窝信号的干扰，一般情况下网络覆盖内UE发送的D2D信号都会包含GP。LTE中使用的两种CP类型分别为常规CP和扩展CP。而且，对于网络覆盖内UE，不同的D2D发现类型也可能采用不同的CP类型。
对于网络覆盖外的UE，由于没有节点进行配置，UE所采用的CP类型或者GP大小一般采用预先配置的方法，或者通过网络覆盖内的UE转发的eNB配置信息得到。网络覆盖外的UE发送的D2D信号如果不会对蜂窝信号造成干扰，可以没有GP。
综上，一个D2D UE可能要检测来自不同覆盖情况或者不同小区的UE发送的不同类型的D2D信号，这些D2D信号所采用的CP类型或者GP大小可能各不相同。例如，如图3所示，覆盖内UE1和覆盖外UE2所使用的CP类型和GP大小可能不一样。对于接收端UE3和UE4，由于无法知道当前所检测的D2D信号的CP类型或者GP大小，就无法准确地进行信号检测。如果每次检测都基于可能的CP类型或GP大小分别检测，则会大大增加检测的复杂度。
在UE发送D2D信号时，如果与周围的D2D UE或者蜂窝UE采用不同的CP类型或者GP大小，也可能会引入额外的干扰。例如，UE1和UE2采用相同的资源池中的子帧发送D2D信号，但他们的CP类型不同，相互之间的信号就不是OFDM(Orthogonal Frequency Division Multiplex，正交频分复用)正交的，存在严重的干扰。同时，如果UE2发送的D2D 信号最后一个符号是没有GP的，而UE1正好在D2D子帧后相邻的蜂窝子帧上发送蜂窝信号，由于D2D信号的定时是按照下行定时发送，而蜂窝信号的定时是提前的，他们的信号就会有重叠的部分，从而产生相互干扰。
由于不同类型的发现信号，或者不同类型的D2D信号，即发现信号或通信信号，所采用的CP类型可能是各不相同的，且与D2D同步信号的CP类型也会不同，因此UE不能重用现有的机制，通过盲检D2D同步信号的CP类型来获知其他D2D信号(发现信号或者通信信号)的CP类型。
发明内容
本申请实施例提供了一种信号发送、接收方法及装置，用以使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。
本申请实施例提供的一种信号发送方法包括：
第一UE确定需要发送给第二UE的信号的信号格式配置；
第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
第一UE根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
通过该方法，使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在接收端UE进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。
较佳地，第一UE确定需要发送给第二UE的信号的信号格式配置，包括：
方式一：第一UE根据网络侧的指示的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
方式二：第一UE根据另一UE转发的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
方式三：第一UE采用预配置的信号格式配置作为需要发送给第二UE的信号的信号格式配置。
较佳地，所述信号格式配置为循环前缀CP类型配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括 是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息，包括：
当第一UE通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，第一UE确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
第一UE在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息，包括：
第一UE通过同步信道中携带的同步信息和/或资源配置信息，指示GP配置；或者，
第一UE在同步信道中采用一个或多个比特的GP配置指示信息，指示第一UE发送给第二UE的信号的GP配置。
较佳地，第一UE通过同步信道向第二UE发送所述长度指示信息，包括：第一UE通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
较佳地，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号配置，通过同步信道中的信息指示。
本申请实施例提供的一种信号接收方法，包括：
第二UE检测同步信道中的信号，获取同步信道中携带的信息；
第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
第二UE根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
通过该方法，接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。
较佳地，第二UE检测同步信道中的信号，包括：
第二UE基于预设的信号格式配置，进行同步信道中的信号的检测。
较佳地，所述同步信道中的信号包括如下信息之一或组合：
第一UE的同步源信息；
第一UE的资源配置信息；
第一UE发送给第二UE的信号的信号格式指示信息。
较佳地，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置，包括：
如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置，包括：
第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
第二UE根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的GP配置。
较佳地，第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，包括：
如果同步信道中指示的同步源类型是网络侧设备，则第二UE确定存在GP；否则确定不存在GP；或者，
如果同步信道中包含第一UE发送给第二UE的信号的资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
第二UE直接根据同步信道中的GP指示信息，判断是否存在GP。
较佳地，该方法还包括：
第二UE根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
本申请实施例提供的一种信号发送装置，包括：
第一信号格式配置确定单元，用于确定第一UE需要发送给第二UE的信号的信号格式配置；
信号格式指示信息确定单元，用于根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
信号格式指示信息发送单元，用于在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
信号发送单元，用于根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
通过该装置，使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的 检测复杂度。
较佳地，所述第一信号格式配置确定单元具体通过如下方式之一确定第一UE需要发送给第二UE的信号的信号格式配置：
方式一：根据网络侧的指示的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式二：根据另一UE转发的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式三：采用预配置的信号格式配置作为第一UE需要发送给第二UE的信号的信号格式配置。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，信号格式指示信息确定单元具体用于：
当所述信号格式配置确定单元通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，信号格式指示信息确定单元具体用于：
通过同步信道中携带的信息，指示GP配置；或者，
在同步信道中采用一个或多个比特的GP配置指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的GP配置。
较佳地，所述信号格式指示信息发送单元，通过同步信道向第二UE发送所述长度指示信息时，具体用于：通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
较佳地，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
本申请实施例提供的一种信号接收装置，包括：
同步信道检测单元，用于检测同步信道中的信号，获取同步信道中携带的信息；
第二信号格式配置确定单元，用于根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
信号检测单元，用于根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
较佳地，所述同步信道检测单元检测同步信道中的信号时，具体用于：基于预设的信号格式配置，进行同步信道中的信号的检测。
较佳地，所述同步信道中的信号包括如下信息之一或组合：
同步信道的同步源信息；
第一UE发送给第二UE的信号的资源配置信息；
第一UE发送给第二UE的信号的信号格式指示信息。
较佳地，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，所述第二信号格式配置确定单元具体用于：
如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，所述第二信号格式配置确定单元具体用于：
根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的GP配置。
较佳地，所述第二信号格式配置确定单元根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP时，具体用于：
如果同步信道中指示的同步源类型是网络侧设备，则确定存在GP；否则确定不存在GP；或者，
如果同步信道中包含第一UE发送给第二UE的信号的资源配置信息，则确定存在GP；否则确定不存在GP；或者，
如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP；或者，
直接根据同步信道中的GP指示信息，判断是否存在GP。
较佳地，所述第二信号格式配置确定单元还用于：
根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
通过该装置，使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。
本申请实施例提供的一种用户设备，包括：
第一信号格式配置确定单元，用于确定本端UE需要发送给对端UE的信号的信号格式配置；
信号格式指示信息确定单元，用于根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
信号格式指示信息发送单元，用于在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向对端UE发送所述信号格式指示信息；
信号发送单元，用于根据所述信号格式配置生成本端UE需要发送给对端UE的信号，并发送给对端UE；
同步信道检测单元，用于检测同步信道中的信号，获取同步信道中携带的信息；
第二信号格式配置确定单元，用于根据同步信道检测单元检测得到的同步信道中携带的信息，确定该同步信道对应的对端UE发送给本端UE的信号所采用的信号格式配置；
信号检测单元，用于根据第二信号格式配置确定单元确定的信号格式配置，检测同步信道对应的对端UE发送给本端UE的信号。
该用户设备既可以作为发送端UE又可以作为接收端UE，具有上述信号发送装置和信号接收装置的功能。
附图说明
图1为背景技术中终端直连通信的数据流程；
图2为背景技术中D2D传输场景示意图；
图3为背景技术中D2D传输干扰场景示意图；
图4为本申请实施例提供的一种信号发送方法的流程示意图；
图5为本申请实施例提供的一种信号接收方法的流程示意图；
图6为本申请实施例提供的一种信号发送装置的结构示意图；
图7为本申请实施例提供的一种信号接收装置的结构示意图；
图8为本申请实施例提供的另一种信号发送装置的结构示意图；
图9为本申请实施例提供的另一种信号接收装置的结构示意图。
具体实施方式
本申请实施例提供了一种信号发送、接收方法及装置，用以使得接收端UE获知发送端UE发送的信号的信号格式配置，从而在进行信号检测时不需要遍历不同的信号格式配置并分别进行检测，可以有效降低接收信号的检测复杂度。
对于网络连接情况不同或者同步源类型不同的D2D UE，其CP和GP配置可能各不相同。对于接收端要分别检测来自这些UE的D2D信号，就需要获知D2D信号所用的CP 类型或者GP长度。如果接收端自己也要发送D2D信号，为了保证与周围UE的信号不会产生强干扰，可能需要按照其他UE的信号的CP类型或者GP长度生成自身的D2D信号。本申请实施例给出的技术方案中，UE通过同步信道中携带的信息，直接或者间接地获知对应的D2D信号所用的CP配置或者GP配置，将该CP配置或者GP配置用于对应D2D信号的接收或者自身D2D信号的发送，在保证D2D信号检测的准确性的同时，降低自身的D2D信号对其他信号的干扰。
第一UE为发送端UE，第二UE为接收端UE，本申请实施例提供的具体方案包括：
步骤一：第一UE确定控制信号或者数据信号的CP配置或者GP配置。
比如，这里的控制信号可以是D2D通信的控制信道所携带的信号，这里的数据信号可以是D2D发现信号或者D2D通信的数据信号。
所述的控制信号或数据信号，即第一UE需要发送给第二UE的信号。
所述的CP配置或者GP配置，即第一UE需要发送给第二UE的信号的信号格式配置。
所述CP配置为常规CP或者扩展CP，所述GP配置包括是否采用GP和/或GP的长度配置。
其中，第一UE确定CP配置的具体方法包括如下方式之一：
方式一：第一UE接收网络侧的CP配置信息确定CP配置；比如，网络侧通过高层信令或者广播信令通知CP配置信息；
方式二：第一UE接收其他UE转发的CP配置信息，确定CP配置；比如，其他UE通过同步信道转发CP配置信息；
方式三：第一UE采用预配置的CP类型作为CP配置；比如，对于网络覆盖外的UE，预配置采用扩展CP作为CP配置。
其中，第一UE确定GP配置的具体方法包括如下方式之一：
方式一：第一UE接收网络侧的GP配置信息确定GP配置；比如，网络侧通过高层信令或者广播信令通知GP配置信息，其中包含了GP大小的指示信息；
方式二：第一UE接收其他UE转发的GP配置信息，确定GP配置；比如，其他UE通过同步信道转发GP配置信息，其中包含了是否采用GP的指示信息；
方式三：第一UE采用预配置的GP大小作为GP配置，针对不同的网络连接情况，可以采用不同的预配置的GP。比如，对于网络覆盖内的UE，预配置采用一个OFDM符号的GP大小作为GP配置；对于网络覆盖外的UE，如果收到网络覆盖内UE的同步信道，则使用预配置的一个OFDM符号的GP大小，否则，预配置不使用GP。
需要说明的是，这里CP配置为CP类型，比如常规CP或者扩展CP；这里GP配置为 是否采用GP和/或GP的大小；比如，GP大小可以为0.5个OFDM符号或者1个OFDM符号或者2个OFDM符号。
步骤二：第一UE根据确定的CP配置确定需要在同步信道中携带的CP指示信息，或者根据确定的GP配置确定需要在同步信道中携带的GP指示信息，并且，第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息。
第一UE根据确定的CP配置确定需要在同步信道中携带的CP指示信息的方法，包括：
方法1：如果第一UE的CP配置为预配置的CP类型，则确定不需要在同步信道中携带CP指示信息；如果第一UE的CP配置通过网络侧的CP配置信息得到或者通过其他UE转发的CP配置信息得到，则确定需要在同步信道中用1比特CP指示信息指示同步信道对应的控制信号或者数据信号的CP类型；具体的，1比特信息指示采用常规CP或扩展CP；
方法2：无论CP配置如何得到，第一UE在同步信道中采用若干比特CP指示信息指示同步信道对应控制信号或者数据信号的CP类型。比如，用1比特信息指示采用常规CP或扩展CP。对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的CP指示信息指示各自信号的CP类型，或者采用相同的CP指示信息指示各个信号采用相同的CP类型。
第一UE根据确定的GP配置确定需要在同步信道中携带的GP指示信息的方法，包括：
第一UE通过同步信道中携带的其他信息隐性指示GP配置，不在同步信道中携带独立的GP指示信息；或者，
第一UE在同步信道中采用若干比特GP指示信息指示同步信道对应控制信号或者数据信号的GP配置。对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的GP指示信息指示各自的GP长度，或者采用相同的GP指示信息指示各个信号采用相同的GP长度。比如，采用1或2比特GP指示信息指示对应信号中是否存在GP和/或所用的GP大小。例如：
1比特GP指示信息指示是否存在GP(如果存在，长度预定义)；
1比特GP指示信息指示GP大小为0.5OFDM符号或者1OFDM符号
2比特GP指示信息指示内容如下：
指示索引 指示内容
00 不存在GP
01 GP大小为0.5OFDM符号
10 GP大小为1OFDM符号
11 GP大小为2OFDM符号
第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息，具体方法包括：第一UE通过同步信道采用预设的CP配置或者GP配置向第二UE发送所述长度指示信息。比如，同步信道中的信号都采用扩展CP进行发送，或者，同步信道中的信号都采用一个OFDM符号的GP长度进行发送。
需要说明的是，对于不同类型的控制信号或者数据信号，其对应的同步信道可能各不相同。具体的，对于D2D信号，其对应的同步信道一般为物理设备间同步信道。
步骤三：第一UE根据确定的CP配置或者GP配置生成并发送控制信号或者数据信号。
其中，所述控制信号或者数据信号与前述的同步信道具有如下至少一种关联关系：
控制信道/数据信道与同步信道的定时和频率同步，或者存在约定的偏移；比如，控制信道/数据信道与同步信道的发送定时相同，发送频点也相同；
控制信道/数据信道所用的物理资源与同步信道的物理资源有约定的映射关系；比如，控制信道/数据信道在同步信道发送的N个子帧后的若干个子帧中传输，N为约定的固定值；
控制信道/数据信道所用的物理资源通过同步信道中的信息进行指示；比如，通过同步信道中的资源配置信息指示控制信道/数据信道所用的物理资源池；
控制信道/数据信道的加扰方式或者解调参考信号(Demodulation Reference Signal，DMRS)配置通过同步信道中的信息指示；比如，根据同步信道中的同步标识(ID)进行控制信道/数据信道的加扰或者DMRS序列的生成。
步骤四：第二UE检测同步信道中的信号，获取同步信道中携带的信息；
第二UE检测同步信道中的信号的方法包括：第二UE基于预定义的CP配置或者GP配置进行同步信道中的信号的检测。比如，同步信道中的信号都基于扩展CP的假设进行检测，或者，同步信道中的信号都基于一个OFDM符号的GP长度进行检测。
同步信道中携带的信息包括如下之一或组合：
同步信道的同步源信息，比如发送UE的同步源类型；
第一UE发送给第二UE的信号的资源配置信息，比如第一UE发送信号所用的资源池信息；
第一UE发送给第二UE的信号的CP指示信息，比如用于指示CP类型；
第一UE发送给第二UE的信号的GP指示信息，比如用于指示是否存在GP，和/或GP大小。
步骤五：第二UE根据同步信道中的信息确定该同步信道对应的控制信号或者数据信号所用的CP配置或者GP配置；
比如，这里的控制信号可以是D2D通信的控制信道所携带的信号，这里的数据信号可以是D2D发现信号或者D2D通信的数据信号。
其中，所述控制信号或者数据信号与前述的同步信道具有如下至少一种关联关系：
控制信道/数据信道与同步信道的定时和频率同步，或者存在约定的偏移；比如，控制信道/数据信道与同步信道的发送定时相同，发送频点也相同；
控制信道/数据信道所用的物理资源与同步信道的物理资源有约定的映射关系；比如，控制信道/数据信道在同步信道发送的N个子帧后的若干个子帧中传输，N为约定的固定值；
控制信道/数据信道所用的物理资源通过同步信道中的信息进行指示；比如，通过同步信道中的资源配置信息指示控制信道/数据信道所用的物理资源池；
控制信道/数据信道的加扰方式或者DMRS配置通过同步信道中的信息指示；比如，根据同步信道中的同步标识(ID)进行控制信道/数据信道的加扰或者DMRS序列的生成。
其中，第二UE根据同步信道中的信息确定对应信号所用的CP配置，具体确定方法包括：
如果同步信道中不包含CP类型指示信息，则采用预配置的CP类型作为CP配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定对应信号所用的CP配置；比如，同步信道中的1比特信息指示采用常规CP或扩展CP。对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的CP指示信息指示各自的CP类型，或者采用相同的CP指示信息指示各个信号相同的CP类型。
或者，
直接根据同步信道中的CP类型指示信息，确定对应信号所用的CP配置；比如，同步信道中的1比特信息指示采用常规CP或扩展CP。对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的CP指示信息指示各自的CP类型，或者采用相同的CP指示信息指示各个信号采用相同的CP类型。
第二UE根据同步信道中的信息确定对应信号所用的GP配置，具体包括：
UE根据同步信道中的GP指示信息或者其他信息确定对应信号是否存在GP。如果存在GP，可以采用预定义的GP长度。
如果同步信道中指示的同步源类型是网络侧设备，例如eNB，则确定存在GP；否则 确定不存在GP；或者，
如果同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP；或者
如果同步信号中指示的同步源类型是网络侧设备，例如eNB，且同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP。
直接根据同步信道中的GP指示信息，确定是否存在GP；比如同步信道中的1比特GP指示信息指示是否存在GP；对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的GP指示信息分别指示，或者采用相同的GP指示信息指示各个信号采用相同的GP长度。
UE根据同步信道中的GP指示信息确定对应信号的GP长度。对于同一同步信道对应的不同的控制信号或者数据信号(比如D2D发现信号和D2D通信信号)，可以采用独立的GP指示信息分别指示或者采用相同的GP指示信息。比如，针对某个数据信号:
1比特GP指示信息指示GP大小为0.5OFDM符号或者1OFDM符号；
2比特GP指示信息指示内容如下：
指示索引 指示内容
00 不存在GP
01 GP大小为0.5OFDM符号
10 GP大小为1OFDM符号
11 GP大小为2OFDM符号
步骤六：第二UE根据确定的CP配置或者GP配置，检测同步信道对应的控制信号或者数据信号。
进一步地，第二UE还可以根据确定的CP配置或者GP配置，确定自身发送的控制信号或者数据信号的CP或者GP配置。
以下给出两个具体实施例的说明。
实施例1：第一UE和第二UE均为网络覆盖内的D2D UE，第一UE发送发现信号，第二UE通过该发现信号发现第一UE。
第一UE确定自身的发现信号所用的CP类型配置，所述CP类型配置由eNB通过广播信令通知给各UE。假设第一UE的CP类型配置为常规CP。
第一UE在同步信道(PD2DSCH)中采用1比特CP指示信息指示它的发现信号所用的CP类型；其中0表示常规CP，1表示扩展CP，当前的指示信息为0。所述同步信道中的信号和对应的同步信号均采用预定义的CP类型生成并进行发送，假设为扩展CP。同时，所述同步信道中还指示eNB配置的用于第一UE发送发现信号的物理资源池。
第一UE基于常规CP生成发现信号，并在eNB配置的物理资源池内的资源上发送发现信号；所述发现信号与同步信号/同步信道采用相同的发送定时和发送频点。
第二UE检测第一UE的同步信号和相应同步信道中的信号，获取同步参考(其中包括定时信息和频点信息)以及同步信道中携带的CP类型指示信息和资源配置信息；其中，第二UE基于预定义的扩展CP类型进行同步信道的检测。
第二UE根据同步信道中的CP类型指示信息(该比特位指示为0)，获知同步信道对应的发现信号的CP配置为常规CP。第二UE根据同步信道中的资源配置信息，获知检测第一UE的发现信号的资源区域；
第二UE基于确定的常规CP类型，在确定的资源区域内以确定的同步参考检测第一UE的同步信道对应的第一UE的发现信号。
实施例2：第一UE为网络覆盖内的D2D UE，第二UE为网络覆盖外的D2D UE，其中第一UE发送D2D广播通信信号，第二UE接收D2D广播通信信号。
第一UE根据自身的网络覆盖情况，确定自己的广播通信信号所用的GP配置。由于第一UE在网络覆盖内，其广播通信信号所用的GP为一个OFDM符号长度的GP，且在子帧最后一个符号。
第一UE通过同步信道(PD2DSCH)中携带的同步源信息和资源配置信息，隐性指示其广播通信信号所用的GP配置，不在同步信道中携带独立的GP指示信息。第一UE将同步源信息和资源配置信息在同步信道中发送，其中同步源信息指示第一UE的同步源类型为eNB，资源配置信息指示了第一UE的广播通信信号传输所用的资源池。所述同步信道中的信号均基于预定义的一个OFDM符号的GP长度生成并进行发送，即最后一个符号不发送信号。
第一UE根据一个OFDM符号长度的GP配置生成并发送同步信道对应的广播通信信号。具体的，广播通信信号的最后一个OFDM符号作为GP其中不发送任何信号。所述广播通信信号与同步信号/同步信道采用相同的发送频点，但是它们之间的定时存在约定好的偏移。
第二UE检测第一UE的同步信号以及同步信道中的信号，获取同步参考以及同步信道中携带的同步源信息和资源配置信息。其中，第二UE基于预定义的一个OFDM符号的GP长度进行同步信道的检测。
第二UE根据同步信道中的同步源信息获知第一UE的同步源为eNB，且同步信道中携带了资源配置信息，从而确定第一UE的广播通信信号中存在GP，长度为预定义的长度(1OFDM符号)。第二UE从资源配置信息中获知第一UE的广播通信信号所用的物理资 源区域。
第二UE基于确定的一个OFDM符号长度的GP配置，在确定的物理资源区域内以确定的同步参考，检测第一UE的同步信道对应的第一UE的广播通信信号，即假设其广播通信信号的最后一个OFDM符号没有发送信号；
第二UE根据同步信道中的其他信息，确定第一UE为网络覆盖内UE，进而将第一UE的GP配置作为自身的广播通信信号的GP配置，即第二UE的广播通信信号也基于一个OFDM符号的GP长度生成。
综上，参见图4，在发送端，本申请实施例提供的一种信号发送方法，包括步骤：
S101、第一UE确定需要发送给第二UE的信号的信号格式配置；
S102、第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
S103、第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
S104、第一UE根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
较佳地，第一UE确定需要发送给第二UE的信号的信号格式配置，包括：
方式一：第一UE根据网络侧的指示的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
方式二：第一UE根据另一UE转发的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
方式三：第一UE采用预配置的信号格式配置作为需要发送给第二UE的信号的信号格式配置。
较佳地，所述信号格式配置为循环前缀CP类型配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息，包括：
当第一UE通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，第一UE确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
第一UE在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携 带的第一UE发送给第二UE的信号的CP类型。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息，包括：
第一UE通过同步信道中携带的信息，指示GP配置；或者，
第一UE在同步信道中采用一个或多个比特的GP配置指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的GP配置。
较佳地，第一UE通过同步信道向第二UE发送所述长度指示信息，包括：第一UE通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
较佳地，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS(Demodulation Reference Symbol，解调参考符号)配置，通过同步信道中的信息指示。
相应地，在接收端，参见图5，本申请实施例提供的一种信号接收方法，包括步骤：
S201、第二UE检测同步信道中的信号，获取同步信道中携带的信息；
S202、第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
S203、第二UE根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
较佳地，第二UE检测同步信道中的信号，包括：
第二UE基于预设的信号格式配置，进行同步信道中的信号的检测。
较佳地，所述同步信道中的信号包括如下信息之一或组合：
第一UE的同步源信息；
第一UE的资源配置信息；
第一UE发送给第二UE的信号的信号格式指示信息。
较佳地，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关 系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS配置，通过同步信道中的信息指示。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置，包括：
如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置，包括：
第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
第二UE根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的GP配置。
较佳地，第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，包括：
如果同步信道中指示的同步源类型是网络侧设备，则第二UE确定存在GP；否则确定不存在GP；或者，
如果同步信道中包含第一UE的资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
第二UE直接根据同步信道中的GP指示信息，判断是否存在GP。
较佳地，该方法还包括：
第二UE根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
与上述方法相对应地，参见图6，本申请实施例提供的一种信号发送装置，包括：
第一信号格式配置确定单元11，用于确定第一UE需要发送给第二UE的信号的信号格式配置；
信号格式指示信息确定单元12，用于根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
信号格式指示信息发送单元13，用于在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
信号发送单元14，用于根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
较佳地，所述第一信号格式配置确定单元具体通过如下方式之一确定第一UE需要发送给第二UE的信号的信号格式配置：
方式一：根据网络侧的指示的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式二：根据另一UE转发的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式三：采用预配置的信号格式配置作为第一UE需要发送给第二UE的信号的信号格式配置。
较佳地，所述信号格式配置为循环前缀CP类型配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，信号格式指示信息确定单 元具体用于：
当所述信号格式配置确定单元通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，信号格式指示信息确定单元具体用于：
通过同步信道中携带的信息，指示GP配置；或者，
在同步信道中采用一个或多个比特的GP配置指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的GP配置。
较佳地，所述信号格式指示信息发送单元，通过同步信道向第二UE发送所述长度指示信息时，具体用于：通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
较佳地，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS配置，通过同步信道中的信息指示。
相应地，参见图7，本申请实施例提供的一种信号接收装置，包括：
同步信道检测单元21，用于检测同步信道中的信号，获取同步信道中携带的信息；
第二信号格式配置确定单元22，用于根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
信号检测单元23，用于根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
较佳地，所述同步信道检测单元检测同步信道中的信号时，具体用于：基于预设的信 号格式配置，进行同步信道中的信号的检测。
较佳地，所述同步信道中的信号包括如下信息之一或组合：
第一UE的同步源信息；
第一UE的资源配置信息；
第一UE发送给第二UE的信号的信号格式指示信息。
较佳地，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS配置，通过同步信道中的信息指示。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，所述第二信号格式配置确定单元具体用于：
如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，所述第二信号格式配置确定单元具体用于：
根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE 的信号所采用的GP配置。
较佳地，所述第二信号格式配置确定单元根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP时，具体用于：
如果同步信道中指示的同步源类型是网络侧设备，则确定存在GP；否则确定不存在GP；或者，
如果同步信道中包含第一UE发送给第二UE的信号的资源配置信息，则确定存在GP；否则确定不存在GP；或者，
如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP；或者，
直接根据同步信道中的GP指示信息，判断是否存在GP。
较佳地，所述第二信号格式配置确定单元还用于：
根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
本申请实施例提供的一种用户设备，包括上述的图6信号发送装置和/或图7信号接收装置。
如图8所示，本申请实施例提供的另一种信号发送装置，包括：
处理器801，用于读取存储器804中的程序，执行下列过程：
确定第一UE需要发送给第二UE的信号的信号格式配置；根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；在确定需要在同步信道中携带所述信号格式指示信息时，控制收发机802通过同步信道向第二UE发送所述信号格式指示信息；根据所述信号格式配置生成所述需要发送给第二UE的信号，并控制收发机802发送给第二UE；
收发机802，用于在处理器801的控制下接收和发送数据。
较佳地，所述处理器801具体通过如下方式之一确定第一UE需要发送给第二UE的信号的信号格式配置：
方式一：根据网络侧的指示的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式二：根据另一UE转发的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
方式三：采用预配置的信号格式配置作为第一UE需要发送给第二UE的信号的信号格式配置。
较佳地，所述信号格式配置为循环前缀CP类型配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，处理器801具体用于：
当通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，处理器801具体用于：
通过同步信道中携带的信息，指示GP配置；或者，
在同步信道中采用一个或多个比特的GP配置指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的GP配置。
较佳地，所述处理器801，通过同步信道向第二UE发送所述长度指示信息时，具体用于：通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
较佳地，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS配置，通过同步信道中的信息指示。
在图8中，总线架构(用总线800来代表)，总线800可以包括任意数量的互联的总线和桥，总线800将包括由通用处理器801代表的一个或多个处理器和存储器804代表的存储器的各种电路链接在一起。总线800还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口803在总线800和收发机802之间提供接口。收发机802可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其他装置通信的单元。例如：收发机802从其他设备接收外部数据。收发机802用于将处理 器801处理后的数据发送给其他设备。取决于计算系统的性质，还可以提供用户接口805，例如小键盘、显示器、扬声器、麦克风、操纵杆。
处理器801负责管理总线800和通常的处理，如前述所述运行通用操作系统。而存储器804可以被用于存储处理器801在执行操作时所使用的数据。
可选的，处理器801可以是CPU(中央处埋器)、ASIC(Application Specific Integrated Circuit，专用集成电路)、FPGA(Field－Programmable Gate Array，现场可编程门阵列)或CPLD(Complex Programmable Logic Device，复杂可编程逻辑器件)。
如图9所示，本申请实施例提供的另一种信号接收装置，包括：
处理器901，用于读取存储器904中的程序，执行下列过程：
通过收发机902检测同步信道中的信号，获取同步信道中携带的信息；根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
收发机902，用于在处理器901的控制下接收和发送数据。
较佳地，所述处理器901检测同步信道中的信号时，具体用于：基于预设的信号格式配置，进行同步信道中的信号的检测。
较佳地，所述同步信道中的信号包括如下信息之一或组合：
第一UE的同步源信息；
第一UE的资源配置信息；
第一UE发送给第二UE的信号的信号格式指示信息。
较佳地，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者DMRS配置，通过同步信道中的信息指示。
较佳地，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
较佳地，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
较佳地，当所述信号格式配置为循环前缀CP类型配置时，所述处理器901具体用于：
如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
较佳地，当所述信号格式配置为信号保护间隔GP配置时，所述处理器901具体用于：
根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的GP配置。
较佳地，所述处理器901根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP时，具体用于：
如果同步信道中指示的同步源类型是网络侧设备，则确定存在GP；否则确定不存在GP；或者，
如果同步信道中包含第一UE发送给第二UE的信号的资源配置信息，则确定存在GP；否则确定不存在GP；或者，
如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP；或者，
直接根据同步信道中的GP指示信息，判断是否存在GP。
较佳地，所述处理器901还用于：
根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
在图9中，总线架构(用总线900来代表)，总线900可以包括任意数量的互联的总线和桥，总线900将包括由通用处理器901代表的一个或多个处理器和存储器904代表的存储器的各种电路链接在一起。总线900还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口903在总线900和收发机902之间提供接口。收发机902可以是一个元件，也可以是多个元件，比如多个接收器和发送器，提供用于在传输介质上与各种其 他装置通信的单元。例如：收发机902从其他设备接收外部数据。收发机902用于将处理器901处理后的数据发送给其他设备。取决于计算系统的性质，还可以提供用户接口905，例如小键盘、显示器、扬声器、麦克风、操纵杆。
处理器901负责管理总线900和通常的处理，如前述所述运行通用操作系统。而存储器904可以被用于存储处理器901在执行操作时所使用的数据。
可选的，处理器901可以是CPU、ASIC、FPGA或CPLD。
本申请实施例提供的一种用户设备，包括上述的图8信号发送装置和/或图9信号接收装置。
综上所述，本申请实施例提供的技术方案中，UE通过同步信道中携带的信息，直接或者间接地获知对应的D2D信号所用的CP配置或者GP配置，将该CP配置或者GP配置用于对应D2D信号的接收或者自身D2D信号的发送，在保证D2D信号检测的准确性的同时，降低自身的D2D信号对其他信号的干扰。具体地，UE在获知D2D信号的CP配置后，检测时不需要遍历不同的CP配置分别进行检测，可以有效降低接收UE的检测复杂度；UE获知D2D信号的GP配置后，检测时可以直接对GP进行速率匹配(rate-matching)，与发送端保持一致，从而保证D2D信号检测的准确性；UE获知周围的蜂窝UE或者D2D UE所用的CP或者GP配置后，可以按照此CP或者GP配置生成自己的D2D信号，从而降低对周围的蜂窝UE或者D2D UE的干扰。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请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，本申请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和光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、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申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (37)

  1. 一种信号发送方法，其特征在于，该方法包括：
    第一UE确定需要发送给第二UE的信号的信号格式配置；
    所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
    所述第一UE在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
    所述第一UE根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
  2. 根据权利要求1所述的方法，其特征在于，所述第一UE确定需要发送给第二UE的信号的信号格式配置，包括：
    方式一：所述第一UE根据网络侧的指示的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
    方式二：所述第一UE根据另一UE转发的信号格式配置信息，确定需要发送给第二UE的信号的信号格式配置；或者，
    方式三：所述第一UE采用预配置的信号格式配置作为需要发送给第二UE的信号的信号格式配置。
  3. 根据权利要求2所述的方法，其特征在于，所述信号格式配置为循环前缀CP类型配置或者信号保护间隔GP配置。
  4. 根据权利要求3所述的方法，其特征在于，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
  5. 根据权利要求3所述的方法，其特征在于，当所述信号格式配置为循环前缀CP类型配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息，包括：
    当第一UE通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，所述第一UE确定需要在同步信道中采用1比特的CP类型指示信息，指示第一UE发送给第二UE的信号的CP类型；或者，
    所述第一UE在同步信道中采用一个或多个比特的CP类型指示信息，指示第一UE发送给第二UE的信号的CP类型。
  6. 根据权利要求3所述的方法，其特征在于，当所述信号格式配置为信号保护间隔GP配置时，所述第一UE根据所述信号格式配置，确定需要在同步信道中携带的信号格式 指示信息，包括：
    所述第一UE通过同步信道中携带的同步信息和/或资源配置信息，指示GP配置；或者，
    所述第一UE在同步信道中采用一个或多个比特的GP配置指示信息，指示第一UE发送给第二UE的信号的GP配置。
  7. 根据权利要求1所述的方法，其特征在于，所述第一UE通过同步信道向第二UE发送所述长度指示信息，包括：第一UE通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
  8. 根据权利要求1所述的方法，其特征在于，所述第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
    用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
    用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
  9. 一种信号接收方法，其特征在于，该方法包括：
    第二UE检测同步信道中的信号，获取同步信道中携带的信息；
    所述第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
    所述第二UE根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
  10. 根据权利要求9所述的方法，其特征在于，所述第二UE检测同步信道中的信号，包括：
    所述第二UE基于预设的信号格式配置，进行同步信道中的信号的检测。
  11. 根据权利要求9所述的方法，其特征在于，所述同步信道中的信号包括如下信息之一或组合：
    第一UE的同步源信息；
    第一UE的资源配置信息；
    第一UE发送给第二UE的信号的信号格式指示信息。
  12. 根据权利要求9所述的方法，其特征在于，所述第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
    用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
    用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
  13. 根据权利要求9所述的方法，其特征在于，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
  14. 根据权利要求13所述的方法，其特征在于，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
  15. 根据权利要求13所述的方法，其特征在于，当所述信号格式配置为循环前缀CP类型配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置，包括：
    如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
    或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
  16. 根据权利要求13所述的方法，其特征在于，当所述信号格式配置为信号保护间隔GP配置时，第二UE根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置，包括：
    第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
    第二UE根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第 二UE的信号所采用的GP配置。
  17. 根据权利要求16所述的方法，其特征在于，第二UE根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，包括：
    如果同步信道中指示的同步源类型是网络侧设备，则第二UE确定存在GP；否则确定不存在GP；或者，
    如果同步信道中包含第一UE的资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
    如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则第二UE确定存在GP；否则确定不存在GP；或者，
    第二UE直接根据同步信道中的GP指示信息，判断是否存在GP。
  18. 根据权利要求9所述的方法，其特征在于，该方法还包括：
    第二UE根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
  19. 一种信号发送装置，其特征在于，该装置包括：
    第一信号格式配置确定单元，用于确定第一UE需要发送给第二UE的信号的信号格式配置；
    信号格式指示信息确定单元，用于根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
    信号格式指示信息发送单元，用于在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向第二UE发送所述信号格式指示信息；
    信号发送单元，用于根据所述信号格式配置生成所述需要发送给第二UE的信号，并发送给第二UE。
  20. 根据权利要求19所述的装置，其特征在于，所述第一信号格式配置确定单元具体通过如下方式之一确定第一UE需要发送给第二UE的信号的信号格式配置：
    方式一：根据网络侧的指示的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
    方式二：根据另一UE转发的信号格式配置信息，确定第一UE需要发送给第二UE的信号的信号格式配置；或者，
    方式三：采用预配置的信号格式配置作为第一UE需要发送给第二UE的信号的信号格式配置。
  21. 根据权利要求20所述的装置，其特征在于，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
  22. 根据权利要求21所述的装置，其特征在于，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
  23. 根据权利要求21所述的装置，其特征在于，当所述信号格式配置为循环前缀CP类型配置时，信号格式指示信息确定单元具体用于：
    当所述信号格式配置确定单元通过所述方式一或方式二确定需要发送给第二UE的信号的CP类型配置时，确定需要在同步信道中采用1比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型；或者，
    在同步信道中采用一个或多个比特的CP类型指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的CP类型。
  24. 根据权利要求21所述的装置，其特征在于，当所述信号格式配置为信号保护间隔GP配置时，信号格式指示信息确定单元具体用于：
    通过同步信道中携带的信息，指示GP配置；或者，
    在同步信道中采用一个或多个比特的GP配置指示信息，指示同步信道中携带的第一UE发送给第二UE的信号的GP配置。
  25. 根据权利要求19所述的装置，其特征在于，所述信号格式指示信息发送单元，通过同步信道向第二UE发送所述长度指示信息时，具体用于：通过同步信道采用预设的信号格式配置向第二UE发送所述长度指示信息。
  26. 根据权利要求19所述的装置，其特征在于，第一UE需要发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
    用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
    用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
  27. 一种信号接收装置，其特征在于，该装置包括：
    同步信道检测单元，用于检测同步信道中的信号，获取同步信道中携带的信息；
    第二信号格式配置确定单元，用于根据所述同步信道中携带的信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的信号格式配置；
    信号检测单元，用于根据所述信号格式配置，检测所述同步信道对应的第一UE发送给第二UE的信号。
  28. 根据权利要求27所述的装置，其特征在于，所述同步信道检测单元检测同步信道中的信号时，具体用于：基于预设的信号格式配置，进行同步信道中的信号的检测。
  29. 根据权利要求27所述的装置，其特征在于，所述同步信道中的信号包括如下信息之一或组合：
    第一UE的同步源信息；
    第一UE的资源配置信息；
    第一UE发送给第二UE的信号的信号格式指示信息。
  30. 根据权利要求27所述的装置，其特征在于，第一UE发送给第二UE的信号，与所述同步信道具有如下至少一种关联关系：
    用于传输第一UE需要发送给第二UE的信号的信道，与同步信道的定时和频率同步，或者存在预设偏移；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，与同步信道的物理资源具有预设的映射关系；
    用于传输第一UE需要发送给第二UE的信号的信道所用的物理资源，通过同步信道中的信息进行指示；
    用于传输第一UE需要发送给第二UE的信号的信道的加扰方式或者解调参考信号DMRS配置，通过同步信道中的信息指示。
  31. 根据权利要求27所述的装置，其特征在于，所述信号格式配置为循环前缀CP配置或者信号保护间隔GP配置。
  32. 根据权利要求31所述的装置，其特征在于，所述循环前缀配置为常规CP或者扩展CP，所述信号保护间隔GP配置包括是否采用GP和/或GP的长度配置。
  33. 根据权利要求31所述的装置，其特征在于，当所述信号格式配置为循环前缀CP类型配置时，所述第二信号格式配置确定单元具体用于：
    如果同步信道中不包含CP类型指示信息，则采用预设的CP类型作为该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；如果同步信道中包含CP类型指示信息，则根据此CP类型指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置；
    或者，直接根据同步信道中的CP类型指示信息，确定该同步信道对应的第一UE发送给第二UE的信号所采用的CP类型配置。
  34. 根据权利要求31所述的装置，其特征在于，当所述信号格式配置为信号保护间隔GP配置时，所述第二信号格式配置确定单元具体用于：
    根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP，当存在GP时，则采用预设的GP配置；或者，
    根据同步信道中的GP配置指示信息确定该同步信道对应的第一UE发送给第二UE的信号所采用的GP配置。
  35. 根据权利要求34所述的装置，其特征在于，所述第二信号格式配置确定单元根据同步信道中的GP配置指示信息或者其他信息，判断该同步信道对应的第一UE发送给第二UE的信号是否存在GP时，具体用于：
    如果同步信道中指示的同步源类型是网络侧设备，则确定存在GP；否则确定不存在GP；或者，
    如果同步信道中包含第一UE发送给第二UE的信号的资源配置信息，则确定存在GP；否则确定不存在GP；或者，
    如果同步信号中指示的同步源类型是网络侧设备，且同步信道中包含资源配置信息，则确定存在GP；否则确定不存在GP；或者，
    直接根据同步信道中的GP指示信息，判断是否存在GP。
  36. 根据权利要求27所述的装置，其特征在于，所述第二信号格式配置确定单元还用于：
    根据确定的信号格式配置，确定第二UE向第一UE发送的信号的信号格式配置。
  37. 一种用户设备，其特征在于，该用户设备包括：
    第一信号格式配置确定单元，用于确定本端UE需要发送给对端UE的信号的信号格式配置；
    信号格式指示信息确定单元，用于根据所述信号格式配置，确定需要在同步信道中携带的信号格式指示信息；
    信号格式指示信息发送单元，用于在确定需要在同步信道中携带所述信号格式指示信息时，通过同步信道向对端UE发送所述信号格式指示信息；
    信号发送单元，用于根据所述信号格式配置生成本端UE需要发送给对端UE的信号，并发送给对端UE；
    同步信道检测单元，用于检测同步信道中的信号，获取同步信道中携带的信息；
    第二信号格式配置确定单元，用于根据同步信道检测单元检测得到的同步信道中携带的信息，确定该同步信道对应的对端UE发送给本端UE的信号所采用的信号格式配置；
    信号检测单元，用于根据第二信号格式配置确定单元确定的信号格式配置，检测同步信道对应的对端UE发送给本端UE的信号。
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