WO2015106683A1 - 一种设备到设备信号传输方法及设备 - Google Patents

一种设备到设备信号传输方法及设备 Download PDF

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Publication number
WO2015106683A1
WO2015106683A1 PCT/CN2015/070678 CN2015070678W WO2015106683A1 WO 2015106683 A1 WO2015106683 A1 WO 2015106683A1 CN 2015070678 W CN2015070678 W CN 2015070678W WO 2015106683 A1 WO2015106683 A1 WO 2015106683A1
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WIPO (PCT)
Prior art keywords
resource
transmission physical
hopping pattern
signal
parameter
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Ceased
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PCT/CN2015/070678
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English (en)
French (fr)
Inventor
陈文洪
高秋彬
彭莹
赵锐
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to EP15737011.5A priority Critical patent/EP3096555B1/en
Priority to JP2016547008A priority patent/JP6411522B2/ja
Priority to US15/111,344 priority patent/US10028125B2/en
Priority to KR1020167022279A priority patent/KR101833843B1/ko
Publication of WO2015106683A1 publication Critical patent/WO2015106683A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W28/00Network traffic management; Network resource management
    • H04W28/16Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/005Discovery of network devices, e.g. terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/0012Hopping in multicarrier systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/08Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/54Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/541Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/50Allocation or scheduling criteria for wireless resources
    • H04W72/51Allocation or scheduling criteria for wireless resources based on terminal or device properties

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a device-to-device (D2D) signal transmission method and device.
  • D2D device-to-device
  • a user equipment (User Equipment, UE) can only work in a half-duplex manner, and cannot detect D2D signals of other UEs in a subframe in which the D2D signal is transmitted by itself. Therefore, if the D2D signals of two UEs are transmitted in the same subframe, they cannot be found in each other within the subframe. Further, if they are still transmitting on the same frequency domain resource, mutual interference will occur due to resource conflicts. If they are transmitted on different frequency domain resources, the probability of other UEs successfully detecting their D2D signals due to in-band leakage interference is also reduced. In either case, the overall D2D transmission performance of the system will decrease.
  • UE User Equipment
  • the D2D communication technology that is, the UE direct-through technology, refers to a method in which a neighboring UE can perform data transmission through a direct link in a short range, and does not need to be forwarded through a central node (ie, a base station), as shown in FIG.
  • D2D technology's short-range communication characteristics and direct communication methods have the following advantages:
  • the UE short-range direct communication mode can achieve higher data rate, lower delay and lower power consumption
  • the direct communication method of D2D can adapt to the local data sharing requirements of services such as wireless point-to-point (P2P), and provide flexible data adapting services;
  • P2P wireless point-to-point
  • D2D direct communication can utilize a large number of widely distributed UEs in the network to extend the coverage of the network.
  • the LTE D2D technology refers to a D2D discovery and communication process controlled by an LTE network operating on an LTE licensed frequency band.
  • 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 D2D technology includes D2D discovery and D2D communication.
  • the D2D discovery is taken as an example to describe the D2D transmission physical resource allocation mode.
  • the UE In the D2D discovery process, the UE needs to know the receiving resource area (the receiving resource area is used for receiving the UE to discover other users), and also needs to know the sending resource area (the sending resource area is used for sending the UE's own discovery signal). Due to hardware limitations, the UE cannot simultaneously transmit and receive discovery signals within one subframe.
  • the system discovery resource includes a subframe set or a physical resource block (PRB) set and a period in which the subframe set or the PRB set appears, and the period is a period in which the system discovers resources, as shown in FIG. 2 . Show.
  • a system discovery resource period may include several subframes, and each subframe includes a plurality of PRBs.
  • the subframes or PRBs are consecutive uplink or downlink resources (for example, consecutive uplink subframes).
  • the UE may perform detection of discovery signals of other UEs in a subframe that does not transmit a discovery signal.
  • the system discovery resource is generally configured by the base station when there is network coverage, and can be configured or pre-defined by the cluster head when there is no network coverage.
  • the discovery signals that allow the UE to transmit its own in which system discovery resources (ie, subframes) can also be configured by the network or cluster head, or determined according to pre-agreed rules.
  • the UE specifically transmits the discovery signal on which discovery resource in the system discovery resource, and may be selected by the UE from the allowed resources (referred to as type 1 discovery), or may be configured by the base station (referred to as type 2 discovery).
  • one UE can only work in a half-duplex manner, and cannot detect the discovery signals of other UEs in the subframe in which the discovery signal is transmitted by itself. Therefore, if the discovery signals of two UEs are transmitted in the same subframe, they cannot be found each other during the period. Further, if they are still transmitting on the same frequency domain resource, mutual interference may occur due to resource conflicts; if they are transmitted on different frequency domain resources, other UEs may successfully discover them due to in-band leakage interference. The probability drops. Generally, for UEs transmitting signals in the same subframe, the smaller the frequency domain resource distance is, the more serious the corresponding in-band leakage is.
  • the prior art proposes a resource hopping pattern between discovery resources used by the UE in different discovery resource periods, so that the discovery resources used by the UE have a fixed resource hopping relationship in different discovery resource periods. Therefore, the D2D UEs that are transmitted in different frequency domain resources in the same subframe can use the discovery resources of different subframes to discover each other. For example, the UE uses the following resource hopping pattern:
  • SF(i) [floor(PRB(0)/nSF)*i*i+mod(PRB(0), nSF)*i+SF(0)]mod nSF
  • PRB(i) [PRB(0)+3*i]mod nRB
  • the SF(i) represents the subframe index of the discovery resource of the UE in the discovery resource period with the index i; the PRB(i) represents the PRB index of the discovery resource of the UE in the discovery resource period with the index i, and the nSF represents a The total number of discovered subframes in the resource period is found, and nRB represents the total number of PRB resources in a discovery resource period.
  • the existing resource hopping scheme can enable the UEs occupying different frequency domain resources in the same subframe to subsequently discover each other, but for different UEs occupying the same frequency domain resource in the same subframe, the subsequent collisions will continue. Can not discover each other, thus reducing the overall discovery probability of the system.
  • the receiving end cannot be based on a certain The physical resource of the D2D signal is detected at a moment, and the physical resource used by the UE to transmit the D2D signal next time is known, and the blind detection can be performed again at the next time, thereby increasing the complexity of the subsequent detection of the D2D signal by the UE.
  • An embodiment of the present application provides a device-to-device signal transmission method and device, which are used to determine, according to their own D2D parameters, a resource hopping pattern between different D2D transmission physical resources, thereby obtaining multiple D2D transmission physical resources.
  • the D2D UE that transmits the D2D signal in the same subframe at any time can subsequently transmit the D2D signal in different subframes, thereby improving the overall D2D transmission performance of the system.
  • a D2D signal sending method provided by an embodiment of the present application includes:
  • the first UE transmits the D2D signal on the determined plurality of D2D transmission physical resources.
  • the UE determines the resource hopping pattern between different D2D transmission physical resources according to the D2D parameter of the UE, thereby obtaining multiple D2D transmission physical resources, so that the D2D UE transmitting the D2D signal in the same subframe at any time is obtained.
  • the subsequent D2D signals can be transmitted in different sub-frames, thereby improving the overall D2D transmission performance of the system.
  • the receiving end can detect the D2D transmission physical resource of the D2D signal according to any time, and know the D2D transmission physical resource used by the UE that sends the D2D signal to transmit the D2D signal next time, so that only the corresponding D2D transmission physical resource needs to be subsequently transmitted.
  • the detection of the D2D signal can be performed, and the detection complexity of the UE can be effectively reduced.
  • the D2D parameter includes any one of the following parameters:
  • the D2D device ID of the first UE The D2D device ID of the first UE
  • the IP address of the target UE of the first UE is the IP address of the target UE of the first UE
  • the D2D frequency hopping configuration parameter of the first UE is the D2D frequency hopping configuration parameter of the first UE.
  • the D2D parameter is pre-configured on the network side.
  • the first UE determines, according to the preset D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt, including:
  • the first UE determines, according to the resource hopping pattern, the multiple D2D transmission physical resources, including:
  • the initial D2D transmission physical resource by means of randomly selecting a resource, or by using resource configuration information indicated by the network side or other UEs;
  • the first UE determines other D2D transmission physical resources according to the resource hopping pattern and the initial D2D transmission physical resource.
  • the D2D parameter is included in the D2D signal.
  • the D2D transmission physical resource is specifically one of the following:
  • a physical resource used to transmit D2D communication signals is a physical resource used to transmit D2D communication signals.
  • the D2D signal is specifically one of the following:
  • a D2D signal receiving method provided by an embodiment of the present application includes:
  • the second UE detects the D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • the UE determines the resource hopping pattern between different D2D transmission physical resources of the peer UE according to the D2D parameter of the peer UE that performs the D2D communication, thereby obtaining multiple D2D transmission physical resources of the peer UE. Then, the D2D signal of the peer UE is received, so that the D2D UE that transmits the D2D signal in the same subframe at any time, and then the D2D signal can be transmitted in different subframes, thereby improving the overall D2D transmission performance of the system.
  • the receiving end UE can detect the D2D transmission physical resource of the D2D signal at any time, and learn the D2D transmission physical resource used by the UE that transmits the D2D signal to transmit the D2D signal next time, so that only the corresponding D2D transmission physical resource needs to be subsequently transmitted.
  • the detection of the D2D signal can be performed, and the detection complexity of the UE can be effectively reduced.
  • the second UE determines a first D2D transmission physical resource for transmitting a D2D signal of the first UE, including:
  • the second UE detects the D2D signal of the first UE, and determines the D2D transmission physical resource of the D2D signal of the first UE to be the first D2D transmission physical resource for transmitting the D2D signal of the first UE; or
  • the second UE determines, by the network side or other UEs, a first D2D transmission physical resource for transmitting the D2D signal of the first UE.
  • the determining, by the second UE, the D2D parameter of the first UE includes:
  • the second UE determines, by the network side or other UEs, the D2D parameter of the first UE.
  • the second UE determines, according to the D2D parameter of the first UE, a resource hopping pattern between multiple D2D transmission physical resources of the first UE, including:
  • a first resource hopping pattern determining unit configured to determine, according to a preset D2D parameter, a resource hopping pattern between multiple D2D transmission physical resources that the device needs to adopt;
  • a first D2D transmission physical resource determining unit configured to determine the multiple D2D transmission physical resources according to the resource hopping pattern
  • a D2D signal sending unit configured to send the D2D signal on the determined plurality of D2D transmission physical resources.
  • the UE determines the resource hopping pattern between different D2D transmission physical resources according to the D2D parameter of the UE, thereby obtaining multiple D2D transmission physical resources, so that the D2D UE transmitting the D2D signal in the same subframe at any time is obtained.
  • the subsequent D2D signals can be transmitted in different sub-frames, thereby improving the overall D2D transmission performance of the system.
  • the receiving end can detect the D2D transmission physical resource of the D2D signal according to any time, and know the D2D transmission physical resource used by the UE that sends the D2D signal to transmit the D2D signal next time, so that only the corresponding D2D transmission physical resource needs to be subsequently transmitted.
  • the detection of the D2D signal can be performed, and the detection complexity of the UE can be effectively reduced.
  • the D2D parameter includes any one of the following parameters:
  • the D2D device ID of the first UE The D2D device ID of the first UE
  • the IP address of the target UE of the first UE is the IP address of the target UE of the first UE
  • the D2D frequency hopping configuration parameter of the first UE is the D2D frequency hopping configuration parameter of the first UE.
  • the D2D parameter is pre-configured on the network side.
  • the first resource hopping pattern determining unit is specifically configured to:
  • the first D2D transmission physical resource determining unit is specifically configured to:
  • Determining initial D2D transmission physical resources by randomly selecting resources, or by resource configuration information indicated by the network side or other UEs;
  • the D2D parameter is included in the D2D signal.
  • the D2D transmission physical resource is specifically one of the following:
  • a physical resource used to transmit D2D communication signals is a physical resource used to transmit D2D communication signals.
  • the D2D signal is specifically one of the following:
  • Another user equipment provided by the embodiment of the present application includes: a processor and a memory, where the processor is configured with a computer program for performing the method performed by the transmitting side UE in the embodiment of the present application; the memory is used to store the computer.
  • the program may be used to configure the processor; the processor may include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. specifically:
  • the processor is configured to: determine, according to the preset device-to-device D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt; determine, according to the resource hopping pattern, the multiple D2D transmission physics a resource; transmitting a D2D signal on the determined plurality of D2D transmission physical resources.
  • the processor determines, according to the preset D2D parameter, a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt; or determines, according to the preset D2D parameter, the device needs to adopt Decoding a time domain resource hopping pattern between the plurality of D2D transmission physical resources; or determining a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt according to the preset D2D parameter, and then, according to The frequency domain resource hopping pattern determines a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt; or, according to the preset D2D parameter, determines multiple D2D transmission physical resources that the device needs to adopt.
  • a time domain resource hopping pattern is obtained, and then a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt is determined according to the time domain resource hopping pattern.
  • the processor determines the initial D2D transmission physical resource by means of randomly selecting a resource, or by performing interference measurement on the candidate resource, or by using resource configuration information indicated by the network side or other UE;
  • the hopping pattern and the initial D2D transmission physical resources determine other D2D transmission physical resources.
  • a first D2D transmission physical resource determining unit configured to determine, for transmitting, a D2D communication with the device a first D2D transmission physical resource of a UE's D2D signal
  • a D2D parameter determining unit configured to determine a D2D parameter of the first UE
  • a second resource hopping pattern determining unit configured to determine, according to the D2D parameter of the first UE, a resource hopping pattern between multiple D2D transmission physical resources of the first UE;
  • a second D2D transmission physical resource determining unit configured to determine, according to the first D2D transmission physical resource and the determined resource hopping pattern, a D2D transmission physical resource used by the first UE to transmit a D2D signal;
  • the D2D signal detecting unit is configured to detect the D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • the device is configured to determine a resource hopping pattern between different D2D transmission physical resources of the peer UE according to the D2D parameter of the peer UE that performs the D2D communication, so as to obtain multiple D2D transmission physical resources of the peer UE. Then, the D2D signal of the peer UE is received, so that the D2D UE that transmits the D2D signal in the same subframe at any time, and then the D2D signal can be transmitted in different subframes, thereby improving the overall D2D transmission performance of the system.
  • the receiving end UE can detect the D2D transmission physical resource of the D2D signal at any time, and learn the D2D transmission physical resource used by the UE that transmits the D2D signal to transmit the D2D signal next time, so that only the corresponding D2D transmission physical resource needs to be subsequently transmitted.
  • the detection of the D2D signal can be performed, and the detection complexity of the UE can be effectively reduced.
  • the first D2D transmission physical resource determining unit is specifically configured to:
  • the D2D parameter determining unit is specifically configured to:
  • the D2D parameter of the first UE is determined by the network side or other UE indication.
  • the second resource hopping pattern determining unit is specifically configured to:
  • the device further includes:
  • a first resource hopping pattern determining unit configured to determine, according to a preset device-to-device D2D parameter, a resource hopping pattern between multiple D2D transmission physical resources that the device needs to adopt;
  • a first D2D transmission physical resource determining unit configured to determine the multiple D2D transmission physical resources according to the resource hopping pattern determined by the first resource hopping pattern determining unit;
  • a D2D signal sending unit configured to send the D2D signal on the plurality of D2D transmission physical resources determined by the first D2D transmission physical resource determining unit.
  • Another user equipment provided by the embodiment of the present application includes: a processor and a memory, where the processor is configured with a computer program for performing the method performed by the receiving side UE in the embodiment of the present application; the memory is used to store the computer.
  • the program may be used to configure the processor; the processor may include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. specifically:
  • the processor is configured to: determine a first D2D transmission physical resource for transmitting a D2D signal of the first UE that performs D2D communication with the device; determine a D2D parameter of the first UE; and determine the D2D parameter according to the first UE Determining a resource hopping pattern between the plurality of D2D transmission physical resources of the first UE; determining, according to the first D2D transmission physical resource and the determined resource hopping pattern, the D2D transmission physical resource used by the first UE to transmit the D2D signal And detecting a D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • the processor detects the D2D signal of the first UE, and determines the D2D transmission physical resource of the D2D signal of the first UE to be the first D2D transmission physical resource for transmitting the D2D signal of the first UE; or, determining The D2D parameter of the first UE is a pre-agreed parameter; or the first D2D transmission physical resource for transmitting the D2D signal of the first UE is determined by the network side or other UE indication.
  • the processor obtains the D2D parameter of the first UE from the D2D signal detected on the first D2D transmission physical resource; or determines the D2D parameter of the first UE by using the network side or other UE indication .
  • the processor determines, according to the D2D parameter of the first UE, a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt; or, according to the D2D parameter of the first UE Determining a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt; or determining, according to the D2D parameter of the first UE, multiple D2D transmission physical resources that the first UE needs to adopt a frequency domain resource hopping pattern between the two, and then determining, according to the frequency domain resource hopping pattern, a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt; or, according to the first Determining a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt, and then determining, according to the time domain resource hopping pattern, the multiple D2Ds that the first UE needs to adopt A frequency domain resource hopping pattern
  • the processor further has a function of a transmitting side processor, that is, also used for:
  • FIG. 1 is a schematic diagram of a data flow of a terminal direct connection communication in the prior art
  • FIG. 2 is a schematic diagram of a discovery resource of a UE in the prior art
  • FIG. 3 is a schematic flowchart diagram of a D2D signal transmission method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a method for transmitting a D2D signal according to an embodiment of the present application
  • FIG. 5 is a schematic flowchart of a method for receiving a D2D signal according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a UE on a sending side according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of another UE on a sending side according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a UE on a receiving side according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another UE on the receiving side according to an embodiment of the present disclosure.
  • the embodiment of the present invention provides a device-to-device signal transmission method and device, which implements a resource hopping pattern between different D2D transmission physical resources according to the D2D parameter of the UE, thereby obtaining multiple D2D transmission physical resources, thereby
  • the D2D UE transmitting the D2D signal in the same subframe at any time may subsequently transmit the D2D signal in different subframes, thereby improving the overall D2D transmission performance of the system.
  • a D2D signal transmission method provided by an embodiment of the present application, referring to FIG. 3, the specific steps include:
  • the first UE determines, according to its own D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt, where the frequency hopping pattern of the frequency domain and/or the time domain is included.
  • the D2D parameter includes any one of the following parameters:
  • the D2D device ID of the first UE The D2D device ID of the first UE
  • the IP address of the target UE of the first UE is the IP address of the target UE of the first UE
  • GPS Global Positioning System
  • the D2D frequency hopping configuration parameter of the first UE is the D2D frequency hopping configuration parameter of the first UE.
  • the D2D parameter used by the first UE may be pre-configured on the network side.
  • the D2D frequency hopping configuration parameter is a parameter specifically used for obtaining a hopping pattern used for D2D signal transmission, and is one or more configuration parameters in the corresponding hopping frequency formula, and the value range is pre-agreed, and the value is determined by
  • the network side is configured or pre-configured in the UE.
  • P in the frequency hopping formula is a D2D parameter, which may be a dedicated D2D frequency hopping configuration parameter.
  • the value of P ranges from ⁇ 0, 1, ..., 10 ⁇ , and the specific value is configured by the network side, regardless of other D2D parameters of the UE.
  • the D2D parameter used by the first UE is agreed with the second UE in advance, or is subsequently indicated by the network side or other UE to the second UE.
  • the D2D parameter may be a source ID of a first UE, a ProSe ID (ProSeimity Service ID), a ProSe Application ID, or a ProSe App User ID. It may also be a target ID (Target ID), a ProSe ID (Proximity Service ID), a ProSe Application ID or a ProSe App User ID of the target UE (ie, the second UE) of the first UE.
  • the D2D parameter may also be a frequency hopping index that is configured by the network side to the first UE by using high layer signaling, where the frequency hopping index is used to determine an index of the hopping pattern in the candidate hopping pattern, and other parameters. Together, the hopping pattern of the UE is determined.
  • the first UE performing D2D communication is consistent with the D2D parameter of the first UE selected by the second UE.
  • Manner 1 The method for determining, by the first UE, the resource hopping pattern according to the D2D parameter includes: determining, by the first UE, a frequency domain resource hopping pattern according to the D2D parameter.
  • the frequency of the D2D transmission physical resource occupied by the index in the frequency domain resource hopping pattern is i.
  • the domain resource index can be expressed as:
  • PRB(i) P mod nRB
  • PRB(i) [PRB(i-1)+P]mod nRB;
  • PRB(i) [PRB(0)+i*P]mod nRB;
  • PRB(i) [PRB(i-1)+f(P)] mod nRB;
  • PRB(i) [PRB(i-1) + f(P, i)] mod nRB.
  • f(P) is a function or sequence with P as a parameter.
  • a pseudo-random sequence C is obtained by using a function of P as an initial value, and a frequency hopping pattern f(P) is obtained by C;
  • f(P, i) is P and i are functions or sequences of parameters.
  • a pseudo-random sequence C(i) is obtained by using a function of P as an initial value, and a frequency hopping pattern f(P, i) is obtained by C(i), and i is an arbitrary natural number.
  • Manner 2 The method for determining, by the first UE, the resource hopping pattern according to the D2D parameter comprises: determining, by the first UE, a time domain resource hopping pattern according to the D2D parameter.
  • the domain resource index can be expressed as:
  • SF(i) [SF(0)+i*PRB(0)+i*(i-1)*P/2]mod nSF;
  • SF(i) [SF(i-1)+f(P)] mod nSF;
  • SF(i) [SF(i-1)+f(P,i)] mod nSF.
  • the method for determining a resource hopping pattern according to the D2D parameter by the first UE includes: determining, by the first UE, a frequency domain resource hopping pattern according to the D2D parameter, and determining a time domain resource hop according to the determined frequency domain resource hopping pattern Frequency pattern.
  • the index in the frequency domain resource hopping pattern is The frequency domain resource index occupied by the D2D transmission physical resource of i may be:
  • PRB(i) P mod nRB
  • PRB(i) [PRB(i-1)+P]mod nRB; or,
  • PRB(i) [PRB(0)+i*P]mod nRB; or,
  • PRB(i) [PRB(i-1)+f(P)] mod nRB;
  • PRB(i) [PRB(i-1) + f(P, i)] mod nRB.
  • the time domain resource index occupied by the D2D transmission physical resource whose index is i is:
  • SF(i) [SF(i-1)+PRB(i-1)] mod nSF; or,
  • SF(i) [SF(0)+i*PRB(0)+i*(i-1)*P/2] mod nSF.
  • the method for determining a resource hopping pattern by the first UE according to the D2D parameter includes: determining, by the first UE, time domain resource hopping between the plurality of D2D transmission physical resources that the first UE needs to adopt according to the preset D2D parameter And then determining, according to the time domain resource hopping pattern, a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt.
  • the D2D transmission physical resource described in this embodiment may be a D2D discovery resource for transmitting a D2D discovery signal, or a D2D communication resource for transmitting a D2D communication signal or a D2D synchronization resource for transmitting a D2D synchronization signal. .
  • the first UE determines, according to the resource hopping pattern, a plurality of D2D transmission physical resources used. Specific methods include:
  • Manner 1 The first UE determines the initial D2D transmission physical resource by randomly selecting resources; and then obtains other D2D transmission physical resources according to the resource hopping pattern and the initial D2D transmission physical resource.
  • the first UE randomly selects one frequency domain resource from the nRB frequency domain resources as the PRB (0), randomly selects one time domain resource from the nSF time domain resources as the SF (0), and then according to the resource hopping pattern.
  • the frequency domain resource index PRB(i) and the time domain resource index SF(i) of the D2D transmission physical resource indexed as i are obtained.
  • the first UE determines the initial D2D transmission physical resource by using the resource configuration information indicated by the network side or other UEs, and obtains other D2D transmission physical resources according to the resource hopping pattern and the initial D2D transmission physical resource.
  • the first UE obtains PRB(0) and SF(0) from resource configuration information indicated by the network side or other UEs, and obtains a frequency domain resource index of the D2D transmission physical resource indexed as i according to the resource hopping pattern.
  • the first UE determines an initial D2D transmission physical resource by performing interference measurement on the candidate resource; the first UE determines another D2D transmission physics according to the resource hopping pattern and the initial D2D transmission physical resource. Resources.
  • the first UE performs interference measurement on all candidate D2D transmission physical resources, and selects a D2D transmission physical resource with less interference as the initial D2D transmission physical resource.
  • the first UE sends a D2D signal on the determined D2D transmission physical resource.
  • the D2D signal carries a D2D parameter used by the first UE to determine a resource hopping pattern
  • the D2D signal may be a D2D discovery signal, or may be a D2D communication signal or a D2D synchronization signal.
  • the D2D transmission physical resource described in this embodiment of the present application may be that the UE actually transmits the D2D letter.
  • the physical resource of the number may also be a physical resource that the UE can use to transmit the D2D signal (but the UE does not necessarily transmit the D2D signal on the resource).
  • the UE transmitting the D2D signal on the determined multiple D2D transmission physical resources does not mean that the UE sends the D2D signal on all the determined D2D transmission physical resources, and the UE may also only partially determine the D2D transmission physical resources. Send a D2D signal.
  • the second UE determines a first D2D transmission physical resource used to transmit the D2D signal of the first UE.
  • the method for the second UE to determine the first D2D transmission physical resource includes:
  • the first D2D transmission physical resource is indicated by the network side or other UE to the second UE; or the first D2D transmission physical resource is determined by the second UE's own blind detection D2D signal, that is, the second UE will detect the D2D
  • the physical resource of the signal is determined to be the first D2D transmission physical resource.
  • the D2D signal of the first UE that is detected by the second UE on the first D2D transmission physical resource carries the D2D parameter used by the first UE to determine the resource hopping pattern.
  • the second UE determines a D2D parameter of the first UE.
  • the D2D parameter of the first UE that sends the D2D signal may be a parameter that is pre-agreed with the first UE, or obtained by using the information carried in the D2D signal, or indicated to the second UE by the network side or other UE.
  • the parameter agreed with the first UE may be the D2D ID of the second UE, the D2D device ID, the D2D application ID, the D2D application user ID, or the IP address of the second UE, for example, the Source ID of the second UE, ProSe ID. (Proximity Service ID), ProSe Application ID or ProSe App User ID.
  • the second UE determines, according to the D2D parameter of the first UE, a resource hopping pattern between multiple D2D transmission physical resources of the first UE.
  • the formula (also referred to as a rule) for determining the resource hopping pattern of the opposite end used by the first UE and the second UE that performs D2D communication is consistent.
  • the second UE determines, according to the first D2D transmission physical resource and the determined resource hopping pattern, a D2D transmission physical resource used by the first UE to transmit a D2D signal.
  • the second UE detects the D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • a method for transmitting a D2D signal includes the following steps:
  • the first UE determines, according to the preset D2D parameter, a resource hopping pattern between multiple D2D transmission physical resources that the first UE needs to adopt;
  • the first UE determines, according to the resource hopping pattern, the multiple D2D transmission physical resources.
  • the first UE sends a D2D signal on the determined multiple D2D transmission physical resources.
  • a method for receiving a D2D signal includes the following steps:
  • the second UE determines a first D2D transmission physical resource for transmitting a D2D signal of the first UE.
  • the second UE determines a D2D parameter of the first UE.
  • the second UE determines, according to the D2D parameter of the first UE, a resource hopping pattern between multiple D2D transmission physical resources of the first UE.
  • the second UE determines, according to the first D2D transmission physical resource and the determined resource hopping pattern, a D2D transmission physical resource used by the first UE to transmit a D2D signal.
  • the second UE detects the D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • a resource hopping pattern for the discovery resource used to send the discovery signal is assumed that the number of frequency domain resources available in the period of each system discovery resource is nRB, and the number of available time domain resources is nSF, and the resource index occupied by UE1 in the period of the system discovery resource with index i is:
  • Frequency domain resource index PRB(i) [PRB(0)+i*P1]mod nRB;
  • Time domain resource index SF(i) [SF(0)+i*PRB(0)+i*(i-1)*P2/2]mod nSF;
  • the resource index occupied by UE2 is:
  • Frequency domain resource index PRB(i) [PRB(0)+i*P2]mod nRB;
  • Time domain resource index SF(i) [SF(0)+i*PRB(0)+i*(i-1)*P2/2]mod nSF;
  • the UE1 and the UE2 respectively send a discovery signal on the discovery resource determined in the period of each system discovery resource, and detect the discovery signals of other UEs in other subframes except the subframe in which the discovery signal is transmitted in the period of the system discovery resource.
  • the first UE and the second UE transmit discovery signals in the same subframe, and thus cannot discover each other; but in the discovery resource period of the first or second UE, they are in different children. Frame transmissions can be found on each other.
  • the second UE is the discovery UE
  • the first UE is the target UE of the second UE
  • the second UE discovers the first UE by detecting the discovery signal of the first UE.
  • the first UE determines a resource hopping pattern of the discovery resource used for transmitting the discovery signal in a period of different system discovery resources according to its own D2D application ID (assuming the ID value is P). Specifically, assuming that the number of frequency domain resources available in the period of each system discovery resource is nRB, and the number of available time domain resources is nSF, the resource index of the first UE occupied by the system discovery resource with index i is:
  • Frequency domain resource index PRB(i) [PRB(i-1)+f(P,i)] mod nRB;
  • Time domain resource index SF(i) [SF(i-1)+PRB(i-1)] mod nSF;
  • the first UE determines multiple discovery resources used by itself according to the resource hopping pattern. Specifically, the first UE receives the discovery resource configuration information of the network side, determines an initial discovery resource configuration, and obtains a frequency domain resource index PRB(i) and a time domain resource of the discovery resource indexed as i according to the resource hopping pattern. Index SF(i). For example, the first UE obtains PRB(0) and SF(0) from the D2D transmission physical resource configuration information indicated by the network side, and then obtains a discovery signal in the system discovery resource period indexed by i according to the resource hopping pattern. The frequency domain resource index PRB(i) and the time domain resource index SF(i) of the discovery resource. Since the values of P of different UEs are different, different pseudo-random sequences c(i) can be obtained, so that the effect of randomization of frequency domain resources can be achieved.
  • the first UE sends a discovery signal on the discovery resource determined in each system discovery resource period, and the discovery signal carries the D2D application ID (P) used by the first UE to determine the resource hopping pattern;
  • P D2D application ID
  • the second UE detects the discovery signal of the first UE on each discovery resource in the system discovery resource period, and detects the discovery signal of the first UE on a certain discovery resource (PRB(k), SF(k)); Obtaining, from the detected discovery signal, a D2D application ID (P) used by the first UE to determine a resource hopping pattern;
  • PRB(k), SF(k) certain discovery resource
  • P D2D application ID
  • Frequency domain resource index PRB(i) [PRB(i-1)+P] mod nRB;
  • Time domain resource index SF(i) [SF(i-1)+PRB(i-1)] mod nSF;
  • the second UE determines, according to the discovery resource (PRB(k), SF(k)) of the first UE discovery signal, and the determined resource hopping pattern, that the first UE sends a discovery signal in a subsequent each system discovery resource period.
  • the second UE detects the discovery signal of the first UE on the discovery resource determined in the subsequent each system discovery resource period.
  • the first UE is a transmitting UE in D2D communication and the second UE is a receiving UE in D2D communication.
  • the first UE determines a resource hopping pattern between the plurality of D2D communication resources used for transmitting the D2D communication signal according to its own D2D broadcast ID (assuming the ID value is P). Specifically, it is assumed that the number of available frequency domain resources for each D2D communication signal transmission is nRB, and the number of available time domain resources is nSF, and the resource index occupied by the communication signal transmission indexed as i is:
  • Frequency domain resource index PRB(i) [PRB(i-1)+P] mod nRB;
  • Time domain resource index SF(i) [SF(i-1)+PRB(i-1)] mod nSF;
  • the first UE determines, according to the resource hopping pattern, a plurality of D2D communication resources used by the D2D communication signal. Specifically, the first UE randomly selects one frequency domain resource from the nRB frequency domain resources as the PRB (0), randomly selects one time domain resource from the nSF time domain resources as the SF (0), and then hops according to the foregoing resources.
  • the picture shows the frequency domain resource index PRB(i) and the time domain resource index SF(i) of the D2D communication resource occupied by the D2D communication signal transmission indexed as i. The specific use effect is the same as that of the first embodiment.
  • the first UE sends a D2D communication signal on the determined multiple D2D communication resources, where the D2D communication signal carries a D2D broadcast ID used by the first UE to determine a resource hopping pattern;
  • the second UE detects the D2D communication signal of the first UE on a certain D2D communication resource (PRB(k), SF(k)) by detecting the D2D communication signal of the first UE on each D2D communication resource; and detecting from the second UE Obtaining, in the received signal, a D2D broadcast ID used by the first UE to determine a resource hopping pattern;
  • PRB(k), SF(k) D2D communication resource
  • the second UE detects the D2D communication signal of the first UE on the determined D2D communication resource.
  • a user equipment provided by the embodiment of the present application includes:
  • the first resource hopping pattern determining unit 11 is configured to determine, according to the preset device-to-device D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt;
  • the first D2D transmission physical resource determining unit 12 is configured to determine, according to the resource hopping pattern, the multiple D2D transmission physical resources;
  • the D2D signal sending unit 13 is configured to send the D2D signal on the determined plurality of D2D transmission physical resources.
  • the D2D parameter includes any one of the following parameters:
  • the D2D device ID of the first UE The D2D device ID of the first UE
  • the IP address of the target UE of the first UE is the IP address of the target UE of the first UE
  • Global positioning system GPS location information of the first UE
  • the D2D frequency hopping configuration parameter of the first UE is the D2D frequency hopping configuration parameter of the first UE.
  • the D2D parameter is pre-configured on the network side.
  • the first resource hopping pattern determining unit 11 is specifically configured to:
  • the first D2D transmission physical resource determining unit 12 is specifically configured to:
  • Determining an initial D2D transmission physical resource by randomly selecting a resource, or by performing interference measurement on the candidate resource, or by using resource configuration information indicated by the network side or other UEs;
  • the D2D parameter is included in the D2D signal.
  • the D2D transmission physical resource is specifically one of the following:
  • a physical resource used to transmit D2D communication signals is a physical resource used to transmit D2D communication signals.
  • the D2D signal is specifically one of the following:
  • another user equipment provided by the embodiment of the present application includes: a processor 31 and a memory 32, where the processor 31 is configured to perform the foregoing execution by the transmitting side UE in the embodiment of the present application.
  • the computer program of the method is used for storing the computer program, and can be used to configure the processor 31.
  • the processor 31 can include a baseband processing component, a radio frequency processing component, and the like according to actual needs, for transmitting related information. specifically:
  • the processor 31 is configured to: determine, according to the preset device-to-device D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt; determine, according to the resource hopping pattern, the multiple D2Ds Transmitting a physical resource; transmitting the D2D signal on the determined plurality of D2D transmission physical resources.
  • the processor 31 determines a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt according to the preset D2D parameter; or determines that the device needs to be adopted according to the preset D2D parameter.
  • the time domain resource hopping pattern between the plurality of D2D transmission physical resources or, according to the preset D2D parameter, determining a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt, and then Determining a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt according to the frequency domain resource hopping pattern; or determining, according to the preset D2D parameter, multiple D2D transmission physics that the device needs to adopt A time domain resource hopping pattern between the resources, and then determining, according to the time domain resource hopping pattern, a frequency domain resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt.
  • the processor 31 determines an initial D2D transmission physical resource by randomly selecting a resource, or by performing interference measurement on the candidate resource, or by using resource configuration information indicated by the network side or other UEs;
  • the resource hopping pattern and the initial D2D transmission physical resources determine other D2D transmission physical resources.
  • a user equipment provided by the embodiment of the present application includes:
  • a first D2D transmission physical resource determining unit 21 configured to determine a first D2D transmission physical resource for transmitting a D2D signal of the first UE that performs D2D communication with the device;
  • a D2D parameter determining unit 22 configured to determine a D2D parameter of the first UE
  • the second resource hopping pattern determining unit 23 is configured to determine, according to the D2D parameter of the first UE, a resource hopping pattern between multiple D2D transmission physical resources of the first UE;
  • a second D2D transmission physical resource determining unit 24 configured to determine, according to the first D2D transmission physical resource and the determined resource hopping pattern, a D2D transmission physical resource used by the first UE to transmit a D2D signal;
  • the D2D signal detecting unit 25 is configured to detect the D2D signal of the first UE on the D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • the first D2D transmission physical resource determining unit 21 is specifically configured to:
  • the D2D parameter determining unit 22 is specifically configured to:
  • the D2D parameter of the first UE is determined by the network side or other UE indication.
  • the second resource hopping pattern determining unit 23 is specifically configured to:
  • the device further includes:
  • the first resource hopping pattern determining unit 11 is configured to determine, according to the preset device-to-device D2D parameter, a resource hopping pattern between the plurality of D2D transmission physical resources that the device needs to adopt;
  • the first D2D transmission physical resource determining unit 12 is configured to determine, according to the resource hopping pattern determined by the first resource hopping pattern determining unit, the plurality of D2D transmission physical resources;
  • the D2D signal sending unit 13 is configured to send the D2D signal on the plurality of D2D transmission physical resources determined by the first D2D transmission physical resource determining unit.
  • the units shown in FIGS. 6 and 8 can be placed on the same UE.
  • another user equipment provided by the embodiment of the present application includes: a processor 41 and a memory 42, where the processor 41 is configured to perform the foregoing implementation of the receiving side UE by the embodiment of the present application.
  • a computer program of the method the memory 42 is configured to store the computer program, can be used to configure the processor 41; According to actual needs, it may include a baseband processing component, a radio frequency processing component, and the like for transmitting related information. specifically:
  • the processor 41 is configured to: determine a first D2D transmission physical resource for transmitting a D2D signal of the first UE that performs D2D communication with the device; determine a D2D parameter of the first UE; according to the D2D parameter of the first UE, Determining a resource hopping pattern between the plurality of D2D transmission physical resources of the first UE; determining, according to the first D2D transmission physical resource and the determined resource hopping pattern, the D2D transmission used by the first UE to transmit the D2D signal a physical resource; detecting a D2D signal of the first UE on a D2D transmission physical resource used by the first UE to transmit the D2D signal.
  • the processor 41 detects the D2D signal of the first UE, and determines the D2D transmission physical resource of the D2D signal of the first UE to be the first D2D transmission physical resource for transmitting the D2D signal of the first UE; or Determining, by the network side or other UE, a first D2D transmission physical resource for transmitting a D2D signal of the first UE.
  • the processor 41 obtains the D2D parameter of the first UE from the D2D signal detected on the first D2D transmission physical resource; or determines the D2D of the first UE by using the network side or other UE indication. parameter.
  • the processor 41 determines, according to the D2D parameter of the first UE, a frequency domain resource hopping pattern between multiple D2D transmission physical resources that the first UE needs to adopt; or, according to the D2D of the first UE a parameter, determining a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt; or determining, according to the D2D parameter of the first UE, multiple D2D transmission physics that the first UE needs to adopt a frequency domain resource hopping pattern between the resources, and then determining, according to the frequency domain resource hopping pattern, a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt; or, according to the a D2D parameter of the UE, determining a time domain resource hopping pattern between the plurality of D2D transmission physical resources that the first UE needs to adopt, and then determining, according to the time domain resource hopping pattern, the first UE needs to adopt multiple The D2D
  • the processor 41 further has the function of the processor 31, that is, also used for:
  • the UE determines a resource hopping pattern between different D2D transmission physical resources according to its own D2D parameter, thereby obtaining a transmission physical resource used by multiple D2D signals, so that a certain UEs that transmit D2D signals in the same subframe at a time can be subsequently transmitted in different subframes, thereby improving the overall D2D signal transmission performance of the system.
  • the technical solution provided by the embodiment of the present application has strong flexibility, and can be used for determining D2D discovery resources and for determining D2D communication resources; it can be used for type 1 discovery and type 2 discovery.
  • UEs that transmit D2D signals in the same subframe regardless of whether they occupy the same frequency domain resources, have the opportunity to transmit on different subframes through the given resource hopping patterns, thereby detecting each other's D2D signals and improving The overall D2D transmission performance of the system.
  • the processing of different frequency domain resource distances in the prior art is the same, and this effect cannot be achieved.
  • 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 produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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Abstract

本申请公开了一种设备到设备信号传输方法及设备,用以实现UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D传输物理资源,使得任一时刻在相同子帧传输D2D信号的D2D UE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。本申请提供的方法包括:第一用户设备UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样;第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源;第一UE在确定的所述多个D2D传输物理资源上发送D2D信号。

Description

一种设备到设备信号传输方法及设备
本申请要求在2014年01月16日提交中国专利局、申请号为201410020037.0、发明名称为“一种设备到设备信号传输方法及设备”的中国专利申请的优先权,以及在2014年09月25日提交中国专利局、申请号为201410498703.1、发明名称为“一种设备到设备信号传输方法及设备”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,尤其涉及一种设备到设备(Device-to-Device,D2D)信号传输方法及设备。
背景技术
在D2D信号的传输过程中,一个用户设备(User Equipment,UE)只能以半双工的方式工作,不能在自己发送D2D信号的子帧中检测其他UE的D2D信号。所以,如果两个UE的D2D信号在同一子帧中传输,它们就无法在该子帧内相互发现。进一步的,如果它们还在相同的频域资源上传输,则会由于资源冲突引起相互干扰。如果它们在不同的频域资源上传输,也会由于带内泄露的干扰导致其他UE成功检测它们的D2D信号的概率下降。无论哪种情况,都会导致系统整体D2D传输性能的下降。
下面给出现有技术的详细介绍。
D2D通信技术,即UE直通技术,是指邻近的UE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:
UE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UE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例如无线点对点(Point to Point,P2P)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UE以拓展网络的覆盖范围。
LTE 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。
D2D技术包括D2D发现和D2D通信,下面以D2D发现为例描述D2D传输物理资源分配方式。
在D2D发现过程中,UE需要知道接收资源区域(该接收资源区域用于UE对其他用户发现信号的接收),也需要知道发送资源区域(该发送资源区域用于UE自身发现信号的发送),由于硬件限制,UE无法在一个子帧内同时进行发现信号的发送和接收。一般情况下,系统发现资源包括一个子帧集合或者物理资源块(Physical Resource Block,PRB)集合以及该子帧集合或者PRB集合出现的周期,该周期即为系统发现资源的周期,如图2所示。一个系统发现资源周期内可以包含若干子帧,每个子帧包含若干PRBs,一般情况下这些子帧或者PRB是连续的上行或者下行资源(比如是连续的上行子帧)。在每个发现资源周期内,UE可以在不发送发现信号的子帧内都进行其他UE的发现信号的检测。系统发现资源在有网络覆盖时一般由基站进行配置,在没有网络覆盖时可以由簇头配置或者预先定义。在哪些系统发现资源(即子帧)中允许UE发送自身的发现信号也可以由网络或者簇头配置,或者按照预先约定的规则确定。UE具体在系统发现资源中的哪个发现资源上发送发现信号,可以由UE从允许的资源中进行选择(称为type 1发现),也可以由基站进行配置(称为type 2发现)。
在D2D发现过程中,一个UE只能以半双工的方式工作,不能在自己发送发现信号的子帧中检测其他UE的发现信号。所以,如果两个UE的发现信号在同一子帧中传输,它们就无法在该周期内相互发现。进一步的,如果它们还在相同的频域资源上传输,则会由于资源冲突引起相互干扰;如果它们在不同的频域资源上传输,也会由于带内泄露的干扰导致其他UE成功发现它们的概率下降。一般情况下,同一子帧内传输信号的UE,它们的频域资源距离越小,相应的带内泄露越严重。
在D2D的讨论中,现有技术提出了UE在不同发现资源周期内使用的发现资源之间的资源跳频图样,使UE使用的发现资源在不同发现资源周期内有固定的资源跳频关系,从而在同一子帧不同频域资源中传输的D2D UE后续使用不同子帧的发现资源,可以相互发现。比如,UE采用如下资源跳频图样:
SF(i)=[floor(PRB(0)/nSF)*i*i+mod(PRB(0),nSF)*i+SF(0)]mod nSF
PRB(i)=[PRB(0)+3*i]mod nRB
其中,SF(i)代表索引为i的发现资源周期内UE的发现资源所在的子帧索引;PRB(i)代表索引为i的发现资源周期内UE的发现资源所在的PRB索引,nSF代表一个发现资源周期内总的发现子帧数,nRB代表一个发现资源周期内总的PRB资源数。
但是,现有的资源跳频方案可以使同一子帧中占用不同频域资源的UE后续可以相互发现,但对于在同一子帧中占用相同频域资源的不同UE,后续仍然会持续冲突,始终无法相互发现,从而降低系统整体的发现概率。而且,基于现有的跳频方案,接收端无法根据某 一时刻检测到D2D信号的物理资源,获知该UE下次发送D2D信号所用的物理资源,只能在下次重新进行盲检,从而增加了UE后续检测D2D信号的复杂度。
发明内容
本申请实施例提供了一种设备到设备信号传输方法及设备,用以实现UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D传输物理资源,使得任一时刻在相同子帧传输D2D信号的D2D UE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。
本申请实施例提供的一种D2D信号发送方法,包括:
第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样;
第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源;
第一UE在确定的所述多个D2D传输物理资源上发送D2D信号。
通过该方法,实现了UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D传输物理资源,使得任一时刻在相同子帧传输D2D信号的D2D UE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。并且,使得接收端可以根据任一时刻检测到D2D信号的D2D传输物理资源,获知发送该D2D信号的UE下次发送D2D信号所用的D2D传输物理资源,从而后续只需要在对应的D2D传输物理资源上检测D2D信号即可,可以有效降低UE的检测复杂度。
较佳地,所述D2D参数包括如下任意一种参数:
网络侧预先通过高层信令配置的第一UE的跳频索引;
第一UE的D2D标识ID;
第一UE的目标UE的D2D标识ID;
第一UE的D2D应用ID;
第一UE的D2D应用用户ID;
第一UE的目标UE的D2D应用用户ID;
第一UE的D2D设备ID;
第一UE的目标UE的D2D设备ID;
第一UE的IP地址;
第一UE的目标UE的IP地址;
第一UE的全球定位系统位置信息;
第一UE的广播ID;
第一UE传输的D2D信号中携带的信息;
第一UE的D2D跳频配置参数。
较佳地,上述D2D参数是网络侧预先配置的。
较佳地,所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样,包括:
所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样。
较佳地,所述第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源,包括:
所述第一UE通过随机选择资源的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;
所述第一UE根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
较佳地,所述D2D信号中包括所述D2D参数。
较佳地,所述D2D传输物理资源具体为如下之一:
用于传输D2D同步信号的物理资源;
用于传输D2D发现信号的物理资源;
用于传输D2D通信信号的物理资源。
较佳地,所述D2D信号具体为如下之一:
D2D同步信号;
D2D发现信号;
D2D通信信号。
相应地,在接收侧,本申请实施例提供的一种D2D信号接收方法,包括:
第二UE确定用于传输第一UE的D2D信号的第一D2D传输物理资源;
第二UE确定该第一UE的D2D参数;
第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
第二UE根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE 传输D2D信号所采用的D2D传输物理资源;
第二UE在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
通过该方法,实现了UE根据进行D2D通信的对端UE的D2D参数,确定对端UE的不同D2D传输物理资源之间的资源跳频图样,从而得到对端UE的多个D2D传输物理资源,进而进行对端UE的D2D信号的接收,使得任一时刻在相同子帧传输D2D信号的D2DUE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。并且,接收端UE可以根据任一时刻检测到D2D信号的D2D传输物理资源,获知发送该D2D信号的UE下次发送D2D信号所用的D2D传输物理资源,从而后续只需要在对应的D2D传输物理资源上检测D2D信号即可,可以有效降低UE的检测复杂度。
较佳地,所述第二UE确定用于传输第一UE的D2D信号的第一D2D传输物理资源,包括:
第二UE检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,
第二UE通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
较佳地,所述第二UE确定该第一UE的D2D参数,包括:
第二UE从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,
第二UE确定该第一UE的D2D参数为预先约定好的参数;或者,
第二UE通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
较佳地,所述第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样,包括:
所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样。
本申请实施例提供的一种用户设备,包括:
第一资源跳频图样确定单元,用于根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
第一D2D传输物理资源确定单元,用于根据所述资源跳频图样,确定所述多个D2D传输物理资源;
D2D信号发送单元,用于在确定的所述多个D2D传输物理资源上发送D2D信号。
通过该设备,实现了UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D传输物理资源,使得任一时刻在相同子帧传输D2D信号的D2D UE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。并且,使得接收端可以根据任一时刻检测到D2D信号的D2D传输物理资源,获知发送该D2D信号的UE下次发送D2D信号所用的D2D传输物理资源,从而后续只需要在对应的D2D传输物理资源上检测D2D信号即可,可以有效降低UE的检测复杂度。
较佳地,所述D2D参数包括如下任意一种参数:
网络侧预先通过高层信令配置的第一UE的跳频索引;
第一UE的D2D标识ID;
第一UE的目标UE的D2D标识ID;
第一UE的D2D应用ID;
第一UE的D2D应用用户ID;
第一UE的目标UE的D2D应用用户ID;
第一UE的D2D设备ID;
第一UE的目标UE的D2D设备ID;
第一UE的IP地址;
第一UE的目标UE的IP地址;
第一UE的全球定位系统位置信息;
第一UE的广播ID;
第一UE传输的D2D信号中携带的信息;
第一UE的D2D跳频配置参数。
较佳地,上述D2D参数是网络侧预先配置的。
较佳地,所述第一资源跳频图样确定单元,具体用于:
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样。
较佳地,所述第一D2D传输物理资源确定单元,具体用于:
通过随机选择资源的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;
根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
较佳地,所述D2D信号中包括所述D2D参数。
较佳地,所述D2D传输物理资源具体为如下之一:
用于传输D2D同步信号的物理资源;
用于传输D2D发现信号的物理资源;
用于传输D2D通信信号的物理资源。
较佳地,所述D2D信号具体为如下之一:
D2D同步信号;
D2D发现信号;
D2D通信信号。
本申请实施例提供的另一种用户设备,包括:处理器和存储器,其中,处理器被配置了用于执行上述本申请实施例发送侧UE执行的方法的计算机程序;存储器用于存储该计算机程序,可以用于配置所述处理器;处理器根据实际需要可以包括基带处理部件、射频处理部件等设备,用于传输相关信息。具体地:
处理器用于:根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;根据所述资源跳频图样,确定所述多个D2D传输物理资源;在确定的所述多个D2D传输物理资源上发送D2D信号。
较佳地,处理器根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,处理器通过随机选择资源的方式,或者通过在候选资源上进行干扰测量的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
本申请实施例提供的一种用户设备,包括:
第一D2D传输物理资源确定单元,用于确定用于传输与所述设备进行D2D通信的第 一UE的D2D信号的第一D2D传输物理资源;
D2D参数确定单元,用于确定该第一UE的D2D参数;
第二资源跳频图样确定单元,用于根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
第二D2D传输物理资源确定单元,用于根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
D2D信号检测单元,用于在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
通过该设备,实现了UE根据进行D2D通信的对端UE的D2D参数,确定对端UE的不同D2D传输物理资源之间的资源跳频图样,从而得到对端UE的多个D2D传输物理资源,进而进行对端UE的D2D信号的接收,使得任一时刻在相同子帧传输D2D信号的D2DUE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。并且,接收端UE可以根据任一时刻检测到D2D信号的D2D传输物理资源,获知发送该D2D信号的UE下次发送D2D信号所用的D2D传输物理资源,从而后续只需要在对应的D2D传输物理资源上检测D2D信号即可,可以有效降低UE的检测复杂度。
较佳地,所述第一D2D传输物理资源确定单元,具体用于:
检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,
通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
较佳地,所述D2D参数确定单元,具体用于:
从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,
确定该第一UE的D2D参数为预先约定好的参数;或者,
通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
较佳地,所述第二资源跳频图样确定单元,具体用于:
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样。
较佳地,所述设备还包括:
第一资源跳频图样确定单元,用于根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
第一D2D传输物理资源确定单元,用于根据所述第一资源跳频图样确定单元确定的资源跳频图样,确定所述多个D2D传输物理资源;
D2D信号发送单元,用于在所述第一D2D传输物理资源确定单元确定的所述多个D2D传输物理资源上发送D2D信号。
本申请实施例提供的另一种用户设备,包括:处理器和存储器,其中,处理器被配置了用于执行上述本申请实施例接收侧UE执行的方法的计算机程序;存储器用于存储该计算机程序,可以用于配置所述处理器;处理器根据实际需要可以包括基带处理部件、射频处理部件等设备,用于传输相关信息。具体地:
处理器用于:确定用于传输与所述设备进行D2D通信的第一UE的D2D信号的第一D2D传输物理资源;确定该第一UE的D2D参数;根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
较佳地,处理器检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,确定该第一UE的D2D参数为预先约定好的参数;或者,通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
较佳地,处理器,从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
较佳地,处理器,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,所述处理器,还具有发送侧处理器的功能,即还用于:
根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
根据确定的资源跳频图样,确定多个D2D传输物理资源;
在确定的所述多个D2D传输物理资源上发送D2D信号。
附图说明
图1为现有技术中终端直连通信的数据流程示意图;
图2为现有技术中UE的发现资源示意图;
图3为本申请实施例提供的一种D2D信号传输方法的流程示意图;
图4为本申请实施例提供的一种D2D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D2D信号接收方法的流程示意图;
图6为本申请实施例提供的发送侧的一种UE的结构示意图;
图7为本申请实施例提供的发送侧的另一种UE的结构示意图;
图8为本申请实施例提供的接收侧的一种UE的结构示意图;
图9为本申请实施例提供的接收侧的另一种UE的结构示意图。
具体实施方式
本申请实施例提供了一种设备到设备信号传输方法及设备,实现了UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D传输物理资源,使得任一时刻在相同子帧传输D2D信号的D2D UE,后续可以在不同的子帧传输D2D信号,从而提高系统整体D2D传输性能。
本申请实施例提供的一种D2D信号传输方法,参见图3,具体步骤包括:
S101、第一UE根据自己的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样,其中包括频域和/或时域的资源跳频图样。
所述D2D参数包括如下任意一种参数:
网络侧预先通过高层信令配置的第一UE的跳频索引;
第一UE的D2D标识(ID);
第一UE的目标UE的D2D标识ID;
第一UE的D2D应用ID;
第一UE的D2D应用用户ID;
第一UE的目标UE的D2D应用用户ID;
第一UE的D2D设备ID;
第一UE的目标UE的D2D设备ID;
第一UE的IP地址;
第一UE的目标UE的IP地址;
第一UE的全球定位系统(Global Positioning System,GPS)位置信息;
第一UE的广播ID;
第一UE传输的D2D信号中携带的信息;
第一UE的D2D跳频配置参数。
其中,第一UE所采用的D2D参数,可以是网络侧预先配置的。
其中,D2D跳频配置参数是专门用于得到D2D信号传输所用的跳频图样的参数,是相应跳频公式中的一个或多个配置参数,其取值范围是预先约定的,且取值由网络侧配置或者预先配置在UE中。本申请所给实施方式中,跳频公式中的P为D2D参数,其可以是一个专用的D2D跳频配置参数。例如,P取值范围为{0,1,……,10},且由网络侧配置具体取值,与UE的其他D2D参数无关。
其中,第一UE所采用的D2D参数,是预先与第二UE约定好的,或者后续由网络侧或其他UE指示给第二UE。比如,所述D2D参数可以是第一UE的源标识(Source ID),邻近服务标识(ProSe ID(Proximity Service ID)),邻近应用标识(ProSe Application ID)或者邻近应用用户标识(ProSe App User ID),也可以是第一UE的目标UE(即第二UE)的目标标识(Target ID),ProSe ID(Proximity Service ID),ProSe Application ID或者ProSe App User ID。另外,所述D2D参数还可以是网络侧预先通过高层信令配置给第一UE的跳频索引,所述跳频索引用于确定跳频图样在候选的跳频图样中的索引,与其他参数一起确定UE的跳频图样。总之,进行D2D通信的第一UE与第二UE所选用的第一UE的D2D参数是一致的。
方式一:第一UE根据D2D参数确定资源跳频图样的方法包括:第一UE根据所述D2D参数确定频域资源跳频图样。
比如,假设所述D2D参数的取值为P,每个D2D传输物理资源可用的频域资源数为nRB,则所述频域资源跳频图样中的索引为i的D2D传输物理资源占用的频域资源索引可以表示为:
PRB(i)=P mod nRB;或者
PRB(i)=[PRB(i-1)+P]mod nRB;或者
PRB(i)=[PRB(0)+i*P]mod nRB;或者
PRB(i)=[PRB(i-1)+f(P)]mod nRB;或者
PRB(i)=[PRB(i-1)+f(P,i)]mod nRB。
其中,f(P)为以P为参数的函数或者序列,比如以P的函数作为初始值得到伪随机序列C,再由C得到跳频图样f(P);f(P,i)为以P和i为参数的函数或者序列,比如以P的函数作为初始值得到伪随机序列C(i),再由C(i)得到跳频图样f(P,i),i为任意自然数。
基于上述公式,只要不同D2D UE的D2D参数不同,一般都可以得到不同的频域跳频图样,从而保证频域资源冲突的UE在后续的传输中可以占用不同的频域资源。
至于采用上述哪一种公式(即规则),是第一UE预先与第二UE约定好的。
方式二:第一UE根据D2D参数确定资源跳频图样的方法包括:第一UE根据所述D2D参数确定时域资源跳频图样。
比如,假设所述D2D参数的取值为P,每个D2D传输物理资源可用的时域资源数为nSF,则所述时域资源跳频图样中的索引为i的D2D传输物理资源占用的时域资源索引可以表示为:
SF(i)=P mod nSF;或者,
SF(i)=[SF(i-1)+P]mod nSF;或者,
SF(i)=[SF(0)+i*P]mod nSF;或者,
SF(i)=[SF(0)+i*PRB(0)+i*(i-1)*P/2]mod nSF;或者
SF(i)=[SF(i-1)+f(P)]mod nSF;或者
SF(i)=[SF(i-1)+f(P,i)]mod nSF。
基于上述公式,只要不同D2D UE的D2D参数不同,都可以得到不同的时域资源跳频图样,从而保证在同一时域资源传输的UE在后续的传输中可以占用不同的时域资源,从而可以接收对方的D2D信号。
至于采用上述哪一种公式(即规则),是第一UE预先与第二UE约定好的。
方式三:第一UE根据D2D参数确定资源跳频图样的方法包括:第一UE根据所述D2D参数确定频域资源跳频图样,再根据所确定的频域资源跳频图样确定时域资源跳频图样。
比如,假设所述D2D参数的取值为P,每个D2D传输物理资源可用的频域资源数为nRB,可用的时域资源数为nSF,则所述频域资源跳频图样中的索引为i的D2D传输物理资源占用的频域资源索引可以为:
PRB(i)=P mod nRB;或者,
PRB(i)=[PRB(i-1)+P]mod nRB;或者,
PRB(i)=[PRB(0)+i*P]mod nRB;或者,
PRB(i)=[PRB(i-1)+f(P)]mod nRB;或者
PRB(i)=[PRB(i-1)+f(P,i)]mod nRB。
索引为i的D2D传输物理资源占用的时域资源索引为:
SF(i)=[SF(i-1)+PRB(i-1)]mod nSF;或者,
SF(i)=[SF(0)+i*PRB(0)+i*(i-1)*P/2]mod nSF。
至于采用上述哪一种公式(即规则),是第一UE预先与第二UE约定好的。
基于上述公式,只要不同D2D UE的D2D参数不同,一般都可以得到不同的频域资源跳频图样,从而保证在同一时频资源传输的UE在后续的传输中可以占用不同的频域资源;而占用同一时域资源不同频域资源的UE,通过时域资源跳频图样在后续的传输中可以占用不同的时域资源,从而可以接收对方的D2D信号。
方式四:第一UE根据D2D参数确定资源跳频图样的方法包括:第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
本申请实施例中所述的D2D传输物理资源既可以是用于传输D2D发现信号的D2D发现资源,也可以是用于传输D2D通信信号的D2D通信资源或用于传输D2D同步信号的D2D同步资源。
S102、第一UE根据所述资源跳频图样,确定所用的多个D2D传输物理资源。具体方法包括:
方式一:第一UE通过随机选择资源的方式确定初始的D2D传输物理资源;再根据所述资源跳频图样以及初始的D2D传输物理资源,得到其他D2D传输物理资源。
比如,第一UE从nRB个频域资源中随机选择一个频域资源作为PRB(0),从nSF个时域资源中随机选择一个时域资源作为SF(0),再根据上述资源跳频图样,得到索引为i的D2D传输物理资源的频域资源索引PRB(i)和时域资源索引SF(i)。
或者,方式二:第一UE通过网络侧或者其他UE指示的资源配置信息确定初始的D2D传输物理资源;再根据所述资源跳频图样以及初始的D2D传输物理资源,得到其他D2D传输物理资源。
比如,第一UE从网络侧或者其他UE指示的资源配置信息中获得PRB(0)和SF(0),再根据上述资源跳频图样,得到索引为i的D2D传输物理资源的频域资源索引PRB(i)和时域资源索引SF(i)。
或者,方式三:第一UE通过在候选资源上进行干扰测量的方式,确定初始的D2D传输物理资源;第一UE根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
比如,第一UE在所有候选D2D传输物理资源上进行干扰测量,选择其中干扰较小的D2D传输物理资源作为初始的D2D传输物理资源。
S103、第一UE在确定的D2D传输物理资源上发送D2D信号。
较佳地,所述D2D信号中携带第一UE用于确定资源跳频图样的D2D参数;
所述D2D信号可以是D2D发现信号,也可以是D2D通信信号或D2D同步信号。
需要说明的是,本申请实施例所述的D2D传输物理资源可以是UE实际传输D2D信 号的物理资源,也可以是UE可用于传输D2D信号的物理资源(但UE并不一定会在该资源上传输D2D信号)。同样的,UE在确定的多个D2D传输物理资源上发送D2D信号,并不意味着UE在所有确定的D2D传输物理资源上发送D2D信号,UE也可以只在其中部分确定的D2D传输物理资源上发送D2D信号。
S104、第二UE确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
其中,第二UE确定第一D2D传输物理资源的方法,具体包括:
所述第一D2D传输物理资源由网络侧或者其他UE指示给该第二UE;或者,所述第一D2D传输物理资源由第二UE自己盲检D2D信号确定,即第二UE将检测到D2D信号的物理资源确定为第一D2D传输物理资源。
其中,所述第二UE在第一D2D传输物理资源上检测到的第一UE的D2D信号中携带第一UE用于确定资源跳频图样的D2D参数。
S105、第二UE确定该第一UE的D2D参数。
其中,发送该D2D信号的第一UE的D2D参数可以是与第一UE预先约定好的参数,或者通过所述D2D信号中携带的信息得到,或者通过网络侧或者其他UE指示给该第二UE。其中,与第一UE约定好的参数可以是第二UE的D2D ID,D2D设备ID,D2D应用ID,D2D应用用户ID或者第二UE的IP地址,比如,第二UE的Source ID,ProSe ID(Proximity Service ID),ProSe Application ID或者ProSe App User ID。
S106、第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样。
本申请实施例中,进行D2D通信的第一UE和第二UE所采用的确定对端的资源跳频图样的公式(也可以称之为规则)是一致的。
S107、第二UE根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
S108、第二UE在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
由此可见,参见图4,在发送侧,本申请实施例提供的一种D2D信号的发送方法包括步骤:
S201、第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样;
S202、第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源;
S203、第一UE在确定的所述多个D2D传输物理资源上发送D2D信号。
相应地,参见图5,在接收侧,本申请实施例提供的一种D2D信号的接收方法包括步骤:
S301、第二UE确定用于传输第一UE的D2D信号的第一D2D传输物理资源;
S302、第二UE确定该第一UE的D2D参数;
S303、第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
S304、第二UE根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
S305、第二UE在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
下面给出几个具体实施例的举例说明。
实施例1:
UE1和第二2根据自己的D2D设备ID(假设该ID取值分别为P1=2和P2=53),确定在不同系统发现资源的周期(即UE自身发送发现信号的资源区域的周期)内发送发现信号所用的发现资源的资源跳频图样。具体的,假设每个系统发现资源的周期内可用的频域资源数为nRB,可用的时域资源数为nSF,则索引为i的系统发现资源的周期内UE1占用的资源索引为:
频域资源索引PRB(i)=[PRB(0)+i*P1]mod nRB;
时域资源索引SF(i)=[SF(0)+i*PRB(0)+i*(i-1)*P2/2]mod nSF;
UE2占用的资源索引为:
频域资源索引PRB(i)=[PRB(0)+i*P2]mod nRB;
时域资源索引SF(i)=[SF(0)+i*PRB(0)+i*(i-1)*P2/2]mod nSF;
UE1和UE2根据所述资源跳频图样,确定自身所用的多个发现资源。具体的,UE1和UE2分别从nRB=50个频域资源中随机选择一个频域资源作为PRB(0),从nSF=10个时域资源中随机选择一个时域资源作为SF(0),再根据上述资源跳频图样,得到索引为i的系统发现资源的周期内发送发现信号所用的发现资源的频域资源索引PRB(i)和时域资源索引SF(i)。
假设UE1选择的PRB(0)=0,SF(0)=2,UE2选择的PRB(0)=3,SF(0)=2,即它们选择了同一子帧中的不同频域资源,则在第二个系统发现资源的周期内,UE1的PRB(1)=P1mod 50=2,SF(1)=2,UE2的PRB(1)=(3+P2)mod 50=6,SF(1)=5,即它们的发现资源在不同子帧;
假设UE1选择的PRB(0)=0,SF(0)=2,UE2选择的PRB(0)=0,SF(0)=2,即它们选择了同一子帧中的相同频域资源;则在第二个系统发现资源的周期内,UE1的PRB(1)=P1mod 50=2,SF(1)=2,UE2的PRB(1)=P2mod 50=3,SF(1)=2,即它们的发现资源位于同一子帧的不同频域资源;这样在第三个系统发现资源的周期内,UE1的PRB(2)=4,SF(2)= 4,UE2的PRB(2)=6,SF(2)=5,即它们的发现资源位于不同子帧。
UE1和UE2分别在每个系统发现资源的周期内确定的发现资源上发送发现信号,并在系统发现资源的周期内除发送发现信号的子帧外的其他子帧上检测其他UE的发现信号。在第一个UE的发现资源周期内,第一UE和第二UE在相同子帧传输发现信号,因此无法相互发现;但在第1或者第2个UE的发现资源周期内,它们在不同子帧传输,可以相互发现。
实施例2:
第二UE为发现UE,第一UE为第二UE的目标UE,第二UE通过检测第一UE的发现信号来发现第一UE。
第一UE根据自己的D2D应用ID(假设该ID取值为P),确定在不同系统发现资源的周期内发送发现信号所用的发现资源的资源跳频图样。具体的,假设每个系统发现资源的周期内可用的频域资源数为nRB,可用的时域资源数为nSF,则索引为i的系统发现资源的周期第一UE占用的资源索引为:
频域资源索引PRB(i)=[PRB(i-1)+f(P,i)]mod nRB;
时域资源索引SF(i)=[SF(i-1)+PRB(i-1)]mod nSF;
其中f(P,i)=c(i),c(i)为伪随机序列,由Cint=P mod nRB在第一个系统发现资源的周期进行初始化。
第一UE根据所述资源跳频图样,确定自身所用的多个发现资源。具体的,第一UE接收网络侧的发现资源配置信息,确定初始的发现资源配置;再根据上述资源跳频图样,得到索引为i的发现资源的频域资源索引PRB(i)和时域资源索引SF(i)。比如,第一UE从网络侧指示的D2D传输物理资源配置信息中获得PRB(0)和SF(0),再根据上述资源跳频图样,得到索引为i的系统发现资源周期内发送发现信号所用的发现资源的频域资源索引PRB(i)和时域资源索引SF(i)。由于不同UE的P的取值不同,可以得到不同的伪随机序列c(i),因此能达到频域资源随机化的效果。
第一UE在每个系统发现资源周期内确定的发现资源上发送发现信号,发现信号中携带第一UE用于确定资源跳频图样的D2D应用ID(P);
第二UE通过在系统发现资源周期内的各个发现资源上检测第一UE的发现信号,在某个发现资源(PRB(k),SF(k))上检测到了第一UE的发现信号;并从检测到的发现信号中得到第一UE用于确定资源跳频图样的D2D应用ID(P);
第二UE根据该D2D应用ID,确定第一UE在不同系统发现资源周期内发送发现信号所用的发现资源的资源跳频图样;所述资源跳频图样的确定方法同前述第一UE行为:
频域资源索引PRB(i)=[PRB(i-1)+P]mod nRB;
时域资源索引SF(i)=[SF(i-1)+PRB(i-1)]mod nSF;
第二UE根据所述检测到第一UE发现信号的发现资源(PRB(k),SF(k)),以及确定的资源跳频图样,确定后续各个系统发现资源周期内第一UE发送发现信号所用的发现资源;
第二UE在后续各个系统发现资源周期内确定的发现资源上检测第一UE的发现信号。
实施例3:
假设第一UE为D2D通信中的发送UE,第二UE为D2D通信中的接收UE。
第一UE根据自己的D2D广播ID(假设该ID取值为P),确定自己发送D2D通信信号所用的多个D2D通信资源之间的资源跳频图样。具体的,假设每次D2D通信信号传输可用的频域资源数为nRB,可用的时域资源数为nSF,则索引为i的通信信号传输占用的资源索引为:
频域资源索引PRB(i)=[PRB(i-1)+P]mod nRB;
时域资源索引SF(i)=[SF(i-1)+PRB(i-1)]mod nSF;
第一UE根据所述资源跳频图样,确定自身发送D2D通信信号所用的多个D2D通信资源。具体的,第一UE从nRB个频域资源中随机选择一个频域资源作为PRB(0),从nSF个时域资源中随机选择一个时域资源作为SF(0),再根据上述资源跳频图样,得到索引为i的D2D通信信号传输占用的D2D通信资源的频域资源索引PRB(i)和时域资源索引SF(i)。具体的使用效果与实施例1相同。
第一UE在所确定的多个D2D通信资源上发送D2D通信信号,D2D通信信号中携带第一UE用于确定资源跳频图样的D2D广播ID;
第二UE通过在各个D2D通信资源上检测第一UE的D2D通信信号,在某个D2D通信资源(PRB(k),SF(k))上检测到了第一UE的D2D通信信号;并从检测到的信号中得到第一UE用于确定资源跳频图样的D2D广播ID;
第二UE根据该D2D广播ID,确定第一UE发送D2D通信信号所用的多个D2D通信资源的资源跳频图样;所述资源跳频图样的确定方法同前述第一UE行为;
第二UE根据所述检测到第一UE的D2D通信信号的D2D通信资源(PRB(k),SF(k)),以及确定的资源跳频图样,确定第一UE用于传输D2D通信信号的其他D2D通信资源;
第二UE在确定的D2D通信资源上检测第一UE的D2D通信信号。
与上述方法相对应的,下面介绍一下本申请实施例提供的设备。
在发送侧,参见图6,本申请实施例提供的一种用户设备,包括:
第一资源跳频图样确定单元11,用于根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
第一D2D传输物理资源确定单元12,用于根据所述资源跳频图样,确定所述多个D2D传输物理资源;
D2D信号发送单元13,用于在确定的所述多个D2D传输物理资源上发送D2D信号。
较佳地,所述D2D参数包括如下任意一种参数:
网络侧预先通过高层信令配置的第一UE的跳频索引;
第一UE的D2D标识ID;
第一UE的目标UE的D2D标识ID;
第一UE的D2D应用ID;
第一UE的D2D应用用户ID;
第一UE的目标UE的D2D应用用户ID;
第一UE的D2D设备ID;
第一UE的目标UE的D2D设备ID;
第一UE的IP地址;
第一UE的目标UE的IP地址;
第一UE的全球定位系统GPS位置信息;
第一UE的广播ID;
第一UE传输的D2D信号中携带的信息;
第一UE的D2D跳频配置参数。
较佳地,所述D2D参数是网络侧预先配置的。
较佳地,所述第一资源跳频图样确定单元11,具体用于:
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,所述第一D2D传输物理资源确定单元12,具体用于:
通过随机选择资源的方式,或者通过在候选资源上进行干扰测量的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;
根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
较佳地,所述D2D信号中包括所述D2D参数。
较佳地,所述D2D传输物理资源具体为如下之一:
用于传输D2D同步信号的物理资源;
用于传输D2D发现信号的物理资源;
用于传输D2D通信信号的物理资源。
较佳地,所述D2D信号具体为如下之一:
D2D同步信号;
D2D发现信号;
D2D通信信号。
在发送侧,参见图7,本申请实施例提供的另一种用户设备,包括:处理器31和存储器32,其中,处理器31被配置了用于执行上述本申请实施例发送侧UE执行的方法的计算机程序;存储器32用于存储该计算机程序,可以用于配置所述处理器31;处理器31根据实际需要可以包括基带处理部件、射频处理部件等设备,用于传输相关信息。具体地:
处理器31用于:根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;根据所述资源跳频图样,确定所述多个D2D传输物理资源;在确定的所述多个D2D传输物理资源上发送D2D信号。
较佳地,处理器31根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,处理器31通过随机选择资源的方式,或者通过在候选资源上进行干扰测量的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
在接收侧,参见图8,本申请实施例提供的一种用户设备,包括:
第一D2D传输物理资源确定单元21,用于确定用于传输与所述设备进行D2D通信的第一UE的D2D信号的第一D2D传输物理资源;
D2D参数确定单元22,用于确定该第一UE的D2D参数;
第二资源跳频图样确定单元23,用于根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
第二D2D传输物理资源确定单元24,用于根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
D2D信号检测单元25,用于在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
较佳地,所述第一D2D传输物理资源确定单元21,具体用于:
检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,
通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
较佳地,所述D2D参数确定单元22,具体用于:
从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,
通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
较佳地,所述第二资源跳频图样确定单元23,具体用于:
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,所述设备还包括:
第一资源跳频图样确定单元11,用于根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
第一D2D传输物理资源确定单元12,用于根据所述第一资源跳频图样确定单元确定的资源跳频图样,确定所述多个D2D传输物理资源;
D2D信号发送单元13,用于在所述第一D2D传输物理资源确定单元确定的所述多个D2D传输物理资源上发送D2D信号。
也就是说,图6和图8所示的单元可以设置在同一UE上。
在接收侧,参见图9,本申请实施例提供的另一种用户设备,包括:处理器41和存储器42,其中,处理器41被配置了用于执行上述本申请实施例接收侧UE执行的方法的计算机程序;存储器42用于存储该计算机程序,可以用于配置所述处理器41;处理器41根 据实际需要可以包括基带处理部件、射频处理部件等设备,用于传输相关信息。具体地:
处理器41用于:确定用于传输与所述设备进行D2D通信的第一UE的D2D信号的第一D2D传输物理资源;确定该第一UE的D2D参数;根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
较佳地,处理器41检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
较佳地,处理器41,从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
较佳地,处理器41,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
较佳地,所述处理器41,还具有处理器31的功能,即还用于:
根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
根据确定的资源跳频图样,确定多个D2D传输物理资源;
在确定的所述多个D2D传输物理资源上发送D2D信号。
综上所述,本申请实施例提供的技术方案中,UE根据自己的D2D参数,确定不同D2D传输物理资源之间的资源跳频图样,从而得到多个D2D信号使用的传输物理资源,使某个时刻在相同子帧传输D2D信号的UE,后续可以在不同的子帧传输,从而提高系统整体D2D信号传输性能。本申请实施例提供的技术方案灵活性强,既可用于D2D发现资源的确定,也可以用于D2D通信资源的确定;既可以用于type 1发现,也可以用于type 2发现。在同一子帧中传输D2D信号的UE,无论它们是否占用相同的频域资源,通过所给的资源跳频图样后续都有机会在不同的子帧上传输,从而相互检测对方的D2D信号,提高系统整体的D2D传输性能。基于本申请所提供的时域跳频图样(如SF(i)=[SF(i-1)+ PRB(i-1)]mod nSF),在索引为i-1的传输资源占用相同时域资源不同频域资源的UE,它们的频域资源距离越小,在索引为i的传输资源它们的时域资源距离就越小,在nSF数量有限的情况下,它们占用不同子帧的可能性越高,从而达到将带内泄露较大的UE放到不同时域资源上的效果。现有技术不同频域资源距离的处理情况相同,无法达到这种效果。
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 (25)

  1. 一种设备到设备D2D信号发送方法,其特征在于,该方法包括:
    第一用户设备UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样;
    第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源;
    第一UE在确定的所述多个D2D传输物理资源上发送D2D信号。
  2. 根据权利要求1所述的方法,其特征在于,所述D2D参数包括如下任意一种参数:
    网络侧预先通过高层信令配置的第一UE的跳频索引;
    第一UE的D2D标识ID;
    第一UE的目标UE的D2D标识ID;
    第一UE的D2D应用ID;
    第一UE的D2D应用用户ID;
    第一UE的目标UE的D2D应用用户ID;
    第一UE的D2D设备ID;
    第一UE的目标UE的D2D设备ID;
    第一UE的IP地址;
    第一UE的目标UE的IP地址;
    第一UE的全球定位系统GPS位置信息;
    第一UE的广播ID;
    第一UE传输的D2D信号中携带的信息;
    第一UE的D2D跳频配置参数。
  3. 根据权利要求2所述的方法,其特征在于,所述D2D参数是网络侧预先配置的。
  4. 根据权利要求1所述的方法,其特征在于,所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的资源跳频图样,包括:
    所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
    所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
    所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
    所述第一UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
  5. 根据权利要求1所述的方法,其特征在于,所述第一UE根据所述资源跳频图样,确定所述多个D2D传输物理资源,包括:
    所述第一UE通过随机选择资源的方式,或者通过在候选资源上进行干扰测量的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;
    所述第一UE根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
  6. 根据权利要求1所述的方法,其特征在于,所述D2D信号中包括所述D2D参数。
  7. 根据权利要求1所述的方法,其特征在于,所述D2D传输物理资源具体为如下之一:
    用于传输D2D同步信号的物理资源;
    用于传输D2D发现信号的物理资源;
    用于传输D2D通信信号的物理资源。
  8. 根据权利要求1所述的方法,其特征在于,所述D2D信号具体为如下之一:
    D2D同步信号;
    D2D发现信号;
    D2D通信信号。
  9. 一种设备到设备D2D信号接收方法,其特征在于,该方法包括:
    第二用户设备UE确定用于传输第一UE的D2D信号的第一D2D传输物理资源;
    第二UE确定该第一UE的D2D参数;
    第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
    第二UE根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
    第二UE在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D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确定用于传输第一UE的D2D信号的第一D2D传输物理资源,包括:
    第二UE检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,
    第二UE通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一 D2D传输物理资源。
  11. 根据权利要求9所述的方法,其特征在于,所述第二UE确定该第一UE的D2D参数,包括:
    第二UE从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,
    第二UE确定该第一UE的D2D参数为预先约定好的参数;或者,
    第二UE通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
  12. 根据权利要求9所述的方法,其特征在于,所述第二UE根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样,包括:
    所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
    所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
    所述第二UE根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
    所述第二UE根据预先设置的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
  13. 一种用户设备,其特征在于,该设备包括:
    第一资源跳频图样确定单元,用于根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
    第一D2D传输物理资源确定单元,用于根据所述资源跳频图样,确定所述多个D2D传输物理资源;
    D2D信号发送单元,用于在确定的所述多个D2D传输物理资源上发送D2D信号。
  14. 根据权利要求13所述的设备,其特征在于,所述D2D参数包括如下任意一种参数:
    网络侧预先通过高层信令配置的第一UE的跳频索引;
    第一UE的D2D标识ID;
    第一UE的目标UE的D2D标识ID;
    第一UE的D2D应用ID;
    第一UE的D2D应用用户ID;
    第一UE的目标UE的D2D应用用户ID;
    第一UE的D2D设备ID;
    第一UE的目标UE的D2D设备ID;
    第一UE的IP地址;
    第一UE的目标UE的IP地址;
    第一UE的全球定位系统GPS位置信息;
    第一UE的广播ID;
    第一UE传输的D2D信号中携带的信息;
    第一UE的D2D跳频配置参数。
  15. 根据权利要求14所述的设备,其特征在于,所述D2D参数是网络侧预先配置的。
  16. 根据权利要求13所述的设备,其特征在于,所述第一资源跳频图样确定单元,具体用于:
    根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
    根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
    根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
    根据预先设置的D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该设备需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
  17. 根据权利要求13所述的设备,其特征在于,所述第一D2D传输物理资源确定单元,具体用于:
    通过随机选择资源的方式,或者通过在候选资源上进行干扰测量的方式,或者通过网络侧或者其他UE指示的资源配置信息,确定初始的D2D传输物理资源;
    根据所述资源跳频图样以及初始的D2D传输物理资源,确定其他D2D传输物理资源。
  18. 根据权利要求13所述的设备,其特征在于,所述D2D信号中包括所述D2D参数。
  19. 根据权利要求13所述的设备,其特征在于,所述D2D传输物理资源具体为如下之一:
    用于传输D2D同步信号的物理资源;
    用于传输D2D发现信号的物理资源;
    用于传输D2D通信信号的物理资源。
  20. 根据权利要求13所述的设备,其特征在于,所述D2D信号具体为如下之一:
    D2D同步信号;
    D2D发现信号;
    D2D通信信号。
  21. 一种用户设备,其特征在于,该设备包括:
    第一D2D传输物理资源确定单元,用于确定用于传输与所述设备进行D2D通信的第一UE的D2D信号的第一D2D传输物理资源;
    D2D参数确定单元,用于确定该第一UE的D2D参数;
    第二资源跳频图样确定单元,用于根据该第一UE的D2D参数,确定该第一UE的多个D2D传输物理资源之间的资源跳频图样;
    第二D2D传输物理资源确定单元,用于根据所述第一D2D传输物理资源以及确定的资源跳频图样,确定该第一UE传输D2D信号所采用的D2D传输物理资源;
    D2D信号检测单元,用于在该第一UE传输D2D信号所采用的D2D传输物理资源上检测第一UE的D2D信号。
  22. 根据权利要求21所述的设备,其特征在于,所述第一D2D传输物理资源确定单元,具体用于:
    检测第一UE的D2D信号,将检测到第一UE的D2D信号的D2D传输物理资源确定为用于传输第一UE的D2D信号的第一D2D传输物理资源;或者,
    通过网络侧或者其他UE指示,确定用于传输第一UE的D2D信号的第一D2D传输物理资源。
  23. 根据权利要求21所述的设备,其特征在于,所述D2D参数确定单元,具体用于:
    从所述第一D2D传输物理资源上检测到的D2D信号中获取该第一UE的D2D参数;或者,
    确定该第一UE的D2D参数为预先约定好的参数;或者,
    通过网络侧或者其他UE指示,确定该第一UE的D2D参数。
  24. 根据权利要求21所述的设备,其特征在于,所述第二资源跳频图样确定单元,具体用于:
    根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样;或者,
    根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;或者,
    根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样,然后,根据该频域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样;
    根据该第一UE的D2D参数,确定该第一UE需要采用的多个D2D传输物理资源之间的时域资源跳频图样,然后,根据该时域资源跳频图样确定该第一UE需要采用的多个D2D传输物理资源之间的频域资源跳频图样。
  25. 根据权利要求21-24任一权项所述的设备,其特征在于,所述设备还包括:
    第一资源跳频图样确定单元,用于根据预先设置的设备到设备D2D参数,确定该设备需要采用的多个D2D传输物理资源之间的资源跳频图样;
    第一D2D传输物理资源确定单元,用于根据所述第一资源跳频图样确定单元确定的资源跳频图样,确定所述多个D2D传输物理资源;
    D2D信号发送单元,用于在所述第一D2D传输物理资源确定单元确定的所述多个D2D传输物理资源上发送D2D信号。
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