WO2018028386A1 - V2x通信的信道发送方法及装置 - Google Patents

V2x通信的信道发送方法及装置 Download PDF

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Publication number
WO2018028386A1
WO2018028386A1 PCT/CN2017/093236 CN2017093236W WO2018028386A1 WO 2018028386 A1 WO2018028386 A1 WO 2018028386A1 CN 2017093236 W CN2017093236 W CN 2017093236W WO 2018028386 A1 WO2018028386 A1 WO 2018028386A1
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Prior art keywords
resource
indication information
information
channel
control channel
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PCT/CN2017/093236
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English (en)
French (fr)
Inventor
王文焕
杨瑾
卢有雄
袁明
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中兴通讯股份有限公司
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Publication of WO2018028386A1 publication Critical patent/WO2018028386A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0215—Traffic management, e.g. flow control or congestion control based on user or device properties, e.g. MTC-capable devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1221—Wireless traffic scheduling based on age of data to be sent
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present invention relates to the field of mobile communications, and in particular to a vehicle-to-vehicle (V2V), vehicle-to-human V2P (Vehicle to Person), vehicle and infrastructure V2I (Vehicle) in a vehicle network.
  • V2V vehicle-to-vehicle
  • V2P vehicle-to-human V2P
  • V2I Vehicle and infrastructure
  • V2X communication A channel transmission method and apparatus collectively referred to as V2X communication.
  • the vehicle networking system refers to providing vehicle information through sensors, vehicle terminals, and electronic tags mounted on the vehicle, and adopts various communication technologies to realize V2V (Vehicle to Vehicle), Vehicle to Person V2P (Vehicle to Person), The interconnection between the vehicle and the infrastructure V2I (Vehicle to Infrastructure), and the effective use of information extraction and sharing on the information network platform to effectively control the vehicle and provide comprehensive services.
  • Vehicle networking can realize communication-based vehicle information notification and collision hazard warning. By using advanced wireless communication technology and next-generation information processing technology, real-time information interaction between vehicle, vehicle, and roadside infrastructure can be realized, and each other can be informed.
  • Status including vehicle position, speed, acceleration, driving route
  • learned road environment information collaboratively aware of road hazard conditions, timely providing a variety of collision warning information to prevent road traffic safety accidents, and become the current solution to road traffic safety issues A new idea.
  • LTE Long Term Evolution
  • UE User Equipment
  • this communication mode has a characteristic that is distinct from the traditional cellular system communication mode, and for the V2V communication of the vehicle network, the close distance between the vehicle and the vehicle Communication can apply D2D communication mode, which saves wireless spectrum resources, reduces data transmission pressure of core network, can reduce system resource occupation, increase spectrum efficiency of cellular communication system, reduce terminal transmission power consumption, and save network to a large extent. Operating costs and other effects.
  • a broadcast communication method is adopted, and each UE separately transmits a broadcast message to be notified by itself, and the existing conference has basically reached a conclusion, and the resource scheduling allocation information and its related service data may be transmitted in the same subframe, or may be Different subframes are sent.
  • SCI ServiceLink Control Information
  • the receiving user may obtain the SCI information by detecting the PSCCH channel of the resource pool or blindly detecting the PSCCH at the pre-configured location, thereby further decoding the relevant service data on the indicated resource, and obtaining the road related information of the transmitting user.
  • the RBs included in the resources of the SA are discretely distributed in multiple locations of the frequency band in a predefined manner, and the SA and the data are adjacent to the frequency domain of the subframe transmission, which reduces the MPR, but considers the number of SA blind detections.
  • the subchannel mode is adopted, such that the SA and its adjacent data divide the frequency domain resources by resource blocks, and the data resources lack the flexibility of resource scheduling after the block is divided.
  • the embodiment of the invention provides a channel sending method and device for V2X communication, so as to at least solve the related art, when the SA and its related data have the same subframe transmission and different subframe transmission, the system resource utilization efficiency is low, blind. Check for complicated problems.
  • a channel sending method for V2X communication including: a channel mode and a message format according to a configuration of a channel resource pool of a V2X device, a transmission mode, and a control channel transmission rule selection transmission control information; Control channel transmission is performed on the V2X device based on the selected channel and information format.
  • the configuration of the V2X resource pool includes at least one of the following: a configuration of a control channel resource pool of the V2V device, a configuration of a service data resource pool of the V2V device, and a number of control channels for transmitting in the same subframe.
  • the sending mode comprises: the control information and the related service information are sent in the same subframe, or the control information is sent in different subframes from the related service information.
  • the first transmission and retransmission of the control channel are sent in a predefined manner; or the first transmission and retransmission of the control channel are sent in a random selection manner.
  • control channel transmission rule further comprises at least one of the following:
  • control channel and the traffic channel when the same subframe is transmitted are selected by the same rule to select the same subframe resource for transmission;
  • control channels of the same subframe and different subframes are retransmitted, they are uniformly sent according to predefined resources;
  • the resource transmission is randomly selected, and when the control channel of the different subframes is retransmitted, it is sent according to a predefined resource.
  • the same channel format is used for the control channel transmission of the same subframe and different subframes; when the control channel is retransmitted with the same subframe or different subframes, the control channel randomly selects the transmission resource, and the resource indication information of the information format includes And transmitting the SA domain resource indication information and the service data resource indication information, where the retransmission SA domain indication information includes at least the frequency domain indication information and/or the time domain indication information of the retransmission SA, where the service data indication information includes the frequency domain indication information and the time The field indicates information, wherein for the same subframe transmission, the time domain indication of the service data is 0.
  • the same channel format is used for the control channel transmission of the same subframe and different subframes; when the control channel is retransmitted with the same subframe or different subframes, the control channel selects the transmission resource according to a predefined rule, and retransmits the SA resource by Defined rule definitions,
  • the resource indication information of the information format includes service data resource indication information, and the service data indication information includes frequency domain indication information and time domain indication information. For the same subframe transmission, the time domain indication of the service data is 0.
  • the control channel transmissions of the same subframe and different subframes adopt different resource scheduling channel formats; when the same subframe or different subframe control channel retransmission, the control channel randomly selects the transmission resource, where, for the same subframe transmission
  • the information format resource indication information includes retransmission SA domain indication information and service data frequency domain indication information.
  • the channel format includes: retransmitting SA domain indication information, service data time domain and frequency domain indication. information.
  • the control channel transmissions of the same subframe and different subframes use different resource scheduling channel formats; when the same subframe or different subframe control channel is retransmitted, the control channel selects the transmission resource according to a predefined rule, and retransmits the SA.
  • the resource data indication information includes a service data indication information, and the service data indication information includes frequency domain indication information when the same subframe is transmitted; and the service data indication information includes Frequency domain indication information and time domain indication information.
  • the frequency domain indication information is a frequency domain resource occupation number, where the frequency domain resource is one PRB or a predetermined resource block; when transmitting in different subframes, the frequency domain indication information
  • the frequency domain resource occupation indication of the subframe used by the service data includes the following schemes: the relative offset of the SA or SA resource pool or the frequency domain index of the data resource pool and the number of occupied frequency domain resources. Wherein the frequency domain resource is a PRB or a predetermined resource block.
  • control information channel and the frequency domain physical resource or the logical resource of the service data channel are in adjacency relationship; when the control information is transmitted in different subframes of the service channel, the control information channel and the service are controlled.
  • the frequency domain physical resources or logical resources of the data channel are non-adjacent and in different subframes.
  • a channel transmitting apparatus for V2X communication including: a selecting module, configured to transmit a mode according to a configuration of a channel resource pool of a V2X device, and a control channel sending rule to select a sending control information Channel and information format; the transmitting module is configured to perform control channel and service data transmission on the V2X device based on the selected channel and information format.
  • the sending mode comprises: the control information and the related service information are sent in the same subframe, or the control information is sent in different subframes from the related service information.
  • the first transmission and retransmission of the control channel are sent in a predefined manner; or the first transmission and retransmission of the control channel are sent in a random selection manner.
  • control channel transmission rule further comprises at least one of the following:
  • control channel and the traffic channel when the same subframe is transmitted are selected by the same rule to select the same subframe resource for transmission;
  • control channels of the same subframe and different subframes are retransmitted, they are uniformly sent according to predefined resources;
  • the resource transmission is randomly selected, and when the control channel of the different subframes is retransmitted, it is sent according to a predefined resource.
  • the same channel format is used for the control channel transmission of the same subframe and different subframes; when the control channel is retransmitted with the same subframe or different subframes, the control channel randomly selects the transmission resource, and the resource indication information of the information format includes And transmitting the SA domain resource indication information and the service data resource indication information, where the retransmission SA domain indication information includes at least the frequency domain indication information and/or the time domain indication information of the retransmission SA, where the service data indication information includes the frequency domain indication information and the time The field indicates information, wherein for the same subframe transmission, the time domain indication of the service data is 0.
  • the same channel format is used for the control channel transmission of the same subframe and different subframes; when the control channel is retransmitted with the same subframe or different subframes, the control channel selects the transmission resource according to a predefined rule, and retransmits the SA resource by
  • the defined rule defines that the resource indication information of the information format includes service data resource indication information, and the service data indication information includes frequency domain indication information and time domain indication information. For the same subframe transmission, the time domain indication of the service data is 0.
  • the control channel transmissions of the same subframe and different subframes adopt different resource scheduling channel formats; when the same subframe or different subframe control channel retransmission, the control channel randomly selects the transmission resource, where, for the same subframe transmission
  • the information format resource indication information includes retransmission SA domain indication information and service data frequency domain indication information.
  • the channel format includes: retransmitting SA domain indication information, service data time domain and frequency domain indication. information.
  • the control channel transmissions of the same subframe and different subframes adopt different resource scheduling channel formats; when retransmitting the same subframe or different subframes, the control channel selects the transmission resource according to a predefined rule, and retransmits the SA resources by
  • the information format resource indication information includes the service data indication information, and when the same subframe is sent, the service data indication information includes the frequency domain indication information; when the different subframes are sent, the service data indication information includes the frequency domain. Indication information and time domain indication information.
  • the frequency domain indication information is a frequency domain resource occupation number, where the frequency domain resource is one PRB or a predetermined resource block; when transmitting in different subframes, the frequency domain indication information
  • the frequency domain resource occupation indication of the subframe used by the service data includes the following schemes: the relative offset of the SA or SA resource pool or the frequency domain index of the data resource pool and the number of occupied frequency domain resources. Wherein the frequency domain resource is a PRB or a predetermined resource block.
  • the channel and the information format of the transmission control information are selected based on the resource pool configuration parameter and the transmission requirement, so that the SA and its related data are used to improve the system when the same subframe transmission and different subframe transmission occur simultaneously.
  • the efficiency of resource utilization and the effectiveness of blind inspection complexity At the same time, the low MPR of the SA and its related data when transmitting in the same subframe is guaranteed, and the SA is guaranteed to be re-transmitted when different subframes are transmitted to overcome the half-duplex problem.
  • FIG. 1 is an indication manner of a SA centralized resource pool in the related art
  • FIG. 3 is a schematic diagram of a sending process according to an embodiment of the present invention.
  • FIG. 4 is a method for selecting a SA in a single-edge resource pool and a subframe position for randomly specifying a retransmission SA according to an embodiment of the present invention, and selecting, by a different manner, a re-sending SA resource and service data in a different manner.
  • FIG. 5 is a diagram of selecting an SA in a SA bilateral resource pool when a subframe is transmitted and randomly specifying a subframe position of a retransmission SA according to an embodiment of the present invention, and an indication that a different subframe SA selects a retransmission SA resource and service data in a predefined manner.
  • the SA in different subframes selects an indication relationship intention of retransmitting the SA resource and the service data in a predefined manner
  • FIG. 7 is a schematic diagram of frequency domain locations of multiple subframe resource configurations according to an embodiment of the present invention, selecting a SA when a subframe is transmitted, and randomly specifying a subframe position of a retransmission SA, and different subframes SA are selected in a predefined manner. Indicate the relationship between SA resources and business data;
  • FIG. 8 is a schematic diagram showing an indication relationship between resending SA resources and service data in a pre-defined manner in which the SA resource pool is located in the same sub-band of the intermediate frequency band according to the embodiment of the present invention
  • FIG. 9 is a schematic structural diagram of frequency domain locations of multiple subframe resource configurations in an SA resource pool according to an embodiment of the present invention.
  • FIG. 10 is a structural diagram of a transmitting device module according to an embodiment of the present invention.
  • a system uplink subframe is used as a physical link shared channel (PSSCH) subframe for transmitting D2D data.
  • the D2D transmitting end UE indicates the used PSSCH resource in the link (ie, D2D link) control information SCI (Sidelink Control Information).
  • SCI Servicelink Control Information
  • the V2V system can use the D2D communication scheme, that is, the SCI information is used to indicate the corresponding data channel resource allocation information, that is, SA (Scheduling Assignment), and the V2V service data is transmitted on the corresponding data channel resource. information.
  • the frequency domain resource of the system includes a number of RBs, wherein the system available RBs are RBs that can be used for signal transmission of the communication system (such as D2D, V2V system), and the available RBs may be actual continuous physical RB resources within the system bandwidth, or Is a plurality of discrete physical RB resources.
  • the actually available RBs are discrete physical RBs
  • the discrete RBs may be logically numbered sequentially to form logically continuous RB resources, and the frequency domain resources of the system are divided into one or more control resource pools and one or more data sharing.
  • a resource pool in which RBs included between a control channel resource pool and a data resource pool do not overlap.
  • the configuration information of the SA and data resource pools in the system needs to be notified to the UEs in the system in a certain way.
  • the configuration information is public information and should be known to all available UEs.
  • the system can be pre-defined and the system broadcasts messages (system information blocks, System). Information Block (SIB), or higher layer signaling, such as Radio Resource Control (RRC) The message is instructed.
  • SIB System information Block
  • RRC Radio Resource Control
  • the user transmission mode (the SA and its related data are transmitted in the same subframe as the SA and its associated data are transmitted in different subframes), and the base station determines the base station scheduling information according to the user reporting information; and for the mode2 (random resource) Select), the user selects the sending mode according to the listening result and the type of business information. And selecting, according to the sending mode and the sending rule, the channel resource, the information format, and the service data channel resource of the SA to be sent, and receiving the blind detection SA of the UE, and adopting the same format for all sending SAs in the SA resource pool.
  • the information of the SA is detected by the format, and the information content of the SA is detected according to the format corresponding to the adjacent relationship between the SA and the data resource pool, and the resource location indicated by the information content of the SA is decoded according to the control information indication. Data information.
  • FIG. 3 is a flowchart of resource scheduling for V2V communication according to an embodiment of the present invention. As shown in FIG. 3, the method includes the following steps:
  • Step S302 According to the configuration of the channel resource pool of the V2X device, the transmission mode, and the channel and information format of the control channel transmission rule selection transmission control information;
  • Step S304 Perform control channel transmission on the V2X device based on the selected channel and information format.
  • the sending mode may include: the control information and the related service information are sent in the same subframe, or the control information is sent in different subframes from the related service information.
  • the first transmission and retransmission of the control channel are sent in a predefined manner; or the first transmission and retransmission of the control channel are sent in a random selection manner.
  • control channel sending rule further includes:
  • control channel and the traffic channel when the same subframe is transmitted are selected by the same rule to select the same subframe resource for transmission;
  • control channels of the same subframe and different subframes are retransmitted, they are uniformly sent according to predefined resources;
  • the resource transmission is randomly selected, and when the control channel of the different subframes is retransmitted, it is sent according to a predefined resource.
  • the same channel format is used for the transmission of the same subframe and different subframes; when the control channel is retransmitted with the same subframe or different subframes, the control channel randomly selects the transmission resource, and the resource indication information of the information format includes the retransmission SA.
  • the domain resource indication information and the service data resource indication information where the retransmission SA domain indication information includes at least frequency domain indication information and/or time domain indication information of the retransmission SA, where the service data indication information includes frequency domain indication information and a time domain indication Information, in which the time domain indication of the service data is 0 for the same subframe transmission.
  • the same channel format is used for sending the same subframe and different subframes; when the retransmission is sent in the same subframe or different subframes, the control channel selects the sending resource according to a predefined rule, and retransmits the SA resource by a predefined rule.
  • the resource indication information of the information format includes service data resource indication information, and the service data indication information includes frequency domain indication information and time domain indication information. For the same subframe transmission, the time domain indication of the service data is 0.
  • the same subframe and different subframes are transmitted using different resource scheduling channel formats; the same subframe or different subframes
  • the control channel randomly selects a transmission resource, where, for the same subframe transmission, the information format resource indication information includes retransmission SA domain indication information and service data frequency domain indication information, and the channel is sent for different subframes.
  • the format includes: resending the SA domain indication information, the service data time domain and the frequency domain indication information.
  • the same subframe and different subframes are transmitted using different resource scheduling channel formats; when retransmitting in the same subframe or different subframes, the control channel selects the sending resource according to a predefined rule, and retransmitting the SA resource by the predefined
  • the service data indication information includes the frequency domain indication information, and the service data indication information includes the frequency domain indication information when the same subframe is transmitted, and the service data indication information includes the frequency domain indication information. And time domain indication information.
  • the frequency domain indication information is a frequency domain resource occupation number, where the frequency domain resource is one PRB or a predetermined resource block; when transmitting in different subframes, the frequency domain indication information
  • the frequency domain resource occupation indication of the subframe used by the service data includes the following schemes: the relative offset of the SA or SA resource pool or the frequency domain index of the data resource pool and the number of occupied frequency domain resources. Wherein the frequency domain resource is a PRB or a predetermined resource block.
  • control information channel and the frequency domain physical resource or the logical resource of the service data channel are in adjacency relationship; when the control information is transmitted in different subframes of the service channel, the control information channel and the service are controlled.
  • the frequency domain physical resources or logical resources of the data channel are non-adjacent and in different subframes.
  • the resource scheduling of the embodiment includes the following steps:
  • Step 1 Obtain the parameters and obtain the resource scheduling parameters through the configuration of the SA and the data resource pool.
  • the specific parameters are as shown in Table 1:
  • Table 1 Indicates the configuration relationship between SA resources and data resources
  • the resource pool configuration determines the maximum number of resources that can be used for the same subframe, and determines the number of identical subframes to be used according to the transmission pre-configuration parameters of the same subframe.
  • the randomly selected SA channel resource and the retransmitted SA channel resource and the data data resource thereof are used for controlling information and/or data information by randomly selecting or listening to obtain the vacant resource according to the transmission mode.
  • Bearer transmission for example, the same subframe used in the same subframe is used to transmit SA channel resources, such as SAs adjacent to the data resource pool, otherwise, select SA channel resources sent in different subframes, and select the PSCCH in the selected PSCCH.
  • the SCI ie, SA
  • the selected PSSCH resource is indicated in the SCI
  • the transmission service data is further carried on the selected PSSCH resource.
  • Mode1 is scheduled by the eNB based on mode1.
  • Mode 1 V2V communication means that the eNB schedules the Tx UE for data communication, that is, the resource of each data packet transmitted by the Tx UE is indicated by the eNB configuration, and after the coverage UE and the eNB establish an RRC connection, the coverage may be Mode1 communication is performed under the configuration of the eNB.
  • the eNodeB displays or implicitly indicates the sidelink link resource configuration information, the control information, and the SA resource selection information used by the Tx UE by using the downlink DCI signaling.
  • the specific resource configuration information is shown in Table 2:
  • the Vehicle Tx UE obtains the resource configuration for the V2V communication from the eNB, that is, the control channel PSCCH resource configuration information and the SCI information (ie, SA) of the V2V obtained by blindly checking the DCI, that is, the resource configuration information for the service data transmission.
  • the PSCCH resource is used by the Tx UE to send the SCI information (that is, the SA) to the Rx UE.
  • the SA resource index indicates the configured PSCCH time domain and the frequency domain resource.
  • the specific indication method is as described in Table 2.
  • the Tx UE is configured in the PSCCH resource.
  • the corresponding SCI information is indicated according to the configuration of the eNB, that is, the resource indicating the PSSCH, and the control and service data are transmitted on the corresponding PSCCH and PSSCH resources. Specific description as step two
  • Step 2 Sending format and method of SA
  • the subframes adjacent to the SA resource and the data resource are used to send the same subframe SA, and the SAs sent in different subframes can adopt the pattern structure to improve the mutual listening capability, that is, the first transmission and the retransmission are sent in a predefined manner, as shown in the figure.
  • the SA is transmitted in the same subframe as shown in Figure 6.
  • the SAs sent in different subframes and the same subframe SA in the same SA resource pool can be retransmitted by the pattern structure, that is, the resources of the SA initial and retransmission are fixed. If the retransmission resource is fixed, the resource indication information of the SA transmitted in the same subframe only needs to indicate the current resource occupancy information, so the SCI overhead sent in different subframes will be larger.
  • the parameters related to resource scheduling that can be used in the same subframe transmission include the parameters shown in Table 3-1 below:
  • the same sub-frame data resource is located above and below the frequency resource adjacent to the SA, and the specific location is determined by the relationship between the SA and the data resource.
  • the parameters of the SCI format when the different subframes are transmitted are related to the resource scheduling: the content includes the frequency domain resource indication and the time domain resource indication, as shown in Table 3-2: (Note: the same information format is used, which is different from the subframe.
  • the subframe control channels are all shown in Table 3-2)
  • the SA retransmission is indicated by the last scheduling information, and the SA is transmitted in a fixed pattern when different subframes are transmitted.
  • the same subframe in which the SA resource and the data resource are adjacent to each other is used to send the SA, and the retransmission resource may be randomly selected.
  • the second transmission is indicated when the SA is sent for the first time.
  • the resource location of the SA, the format in which the SCI information is sent may be the same as that of the different subframes, or may be inconsistent.
  • whether the same subframe is transmitted by the location of the SA in the SA resource pool, and the subframe position indicating the retransmission is indicated in the SA. 7 is the same sub-frame SA resource, such as SA pool 2, except for the same subframe SA in the immediately adjacent subframe SA resource pool, where the frequency domain resource indication is further indicated as needed. Is the upper frequency of the SA or the lower frequency of the SA, or other non-adjacent SA resources whose frequency domain is indicated as a single upper side or a single lower frequency band.
  • its subframe scheduling information includes the time domain information of the next SA and data to be transmitted, in addition to the frequency domain resource number information.
  • the SA and the related data are transmitted in the same SCI format as the subframe and the different subframes, and the parameters included in the same SCI format are determined, wherein the location relationship of the SA in the resource pool determines whether the SA and its data are transmitted in the same subframe, when the same subframe is sent.
  • the resource resource field indicated by the data resource field is the resource location T-RPT of the retransmitted SA, as shown in Table 3-4, the unified resource indication method,
  • the scheduling information includes frequency domain indication information, and time domain resource information of the transmitted service data, as shown in Table 3-4: (Note: since different subframes are in a pattern structure, the retransmission SA is pre- Define location without instructions)
  • the SA randomly selects to transmit when transmitting in the same subframe and different subframes. That is, the SA and the retransmission selection have no fixed rules.
  • the data resources are located in the time-frequency domain resource after the SA retransmission, and the location relationship of the SA in the resource pool determines whether the SA and its data are transmitted in the same subframe.
  • the SA initial transmission not only the data subframe position but also the resource location of the SA retransmission is indicated.
  • the SA indication information may only include the retransmission SA time domain offset information to further reduce The SA indicates the information overhead.
  • the SCI indicates the meaning of the frequency domain resource number information, and does not include the time domain resource indication information, and is transmitted in the same subframe, and the time domain information is implicit information.
  • Table 4-1 The same format indications for different subframes of the same subframe are shown in Table 4-1:
  • another indication manner may be adopted, that is, the bitmap indication manner in which the SA is combined with the data is unified, and the subframe SA is retransmitted twice, for example, 1001000000, where 1 indicates that the same subframe is transmitted, and the second one is 1 Is the same sub-frame position of the retransmission. For example, 0001001101, where 0 indicates different subframe transmission, the second 1 is the SA retransmission position, and 1101 is the data transmission subframe.
  • the SA first retransmission selects the same frequency domain location.
  • the subframe scheduling information When different subframe scheduling information is retransmitted, resource selection is selected according to rules, and the same subframe scheduling randomly selects resource transmission.
  • the subframe scheduling information When the subframe is transmitted, the subframe scheduling information has only the frequency domain resource number information.
  • the 1 bit overhead indication can be used, as shown in FIG. 6 and FIG. 7.
  • the scheduling information For different subframe transmissions, the scheduling information includes frequency domain indication information and transmitted subframe information.
  • Step 3 The receiving UE obtains the resource pool configuration of the SA and the data according to the pre-configuration or RRC signaling, and detects the resource scheduling information according to the corresponding format according to the corresponding signaling parameter, and then decodes the corresponding service data in the corresponding location. .
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
  • the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
  • a resource scheduling apparatus for V2V communication includes: a selecting module 10 and a sending module 20.
  • the selecting module 10 is configured to send a mode according to a configuration of a channel resource pool of the V2X device, and
  • the control channel transmission rule selects the channel and information format in which the control information is transmitted.
  • the transmitting module 20 is configured to perform control channel transmission on the V2X device based on the selected channel and information format.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.
  • An embodiment of the present invention further provides a storage medium storing program code for executing the above embodiments, which may include, but is not limited to, a U disk, a read only memory (ROM, Read-Only Memory). ), random access memory (RAM, Random Access Memory), removable hard disk, disk or optical disk, and other media that can store program code.
  • a storage medium storing program code for executing the above embodiments, which may include, but is not limited to, a U disk, a read only memory (ROM, Read-Only Memory). ), random access memory (RAM, Random Access Memory), removable hard disk, disk or optical disk, and other media that can store program code.
  • the various modules or steps of the present invention described above can be used with general calculations.
  • the devices are implemented, they may be centralized on a single computing device, or distributed over a network of multiple computing devices, optionally they may be implemented in program code executable by the computing device, such that they may be stored Executed by the computing device in a storage device, and in some cases, the steps shown or described may be performed in an order different than that herein, or separately fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.

Abstract

本发明提供了一种V2X通信的信道发送方法及装置，该方法包括：根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；基于所选择出的信道和信息格式对所述V2X设备进行控制信道发送。在本发明中，基于资源池配置参数及发送需求来选择发送控制信息的信道和信息格式，使SA与其相关数据在同时存在同子帧发送和不同子帧发送时，提高了系统资源的利用效率，降低了盲检复杂度。

Description

V2X通信的信道发送方法及装置 技术领域
本发明涉及移动通信领域，具体而言，涉及车联网中的一种车辆到车辆(Vehicle-to-Vehicle，简称为V2V)、车与人V2P(Vehicle to Person)、车与基础设施V2I(Vehicle to Infrastructure)统称为V2X的通信的信道发送方法及装置。
背景技术
车联网系统是指通过装载在车辆上的传感器、车载终端及电子标签等设备提供车辆信息，采用各种通信技术实现车与车V2V(Vehicle to Vehicle)、车与人V2P(Vehicle to Person)、车与基础设施V2I(Vehicle to Infrastructure)之间的互连互通，并在信息网络平台上对信息进行提取、共享等有效利用，对车辆进行有效的管控和提供综合服务的系统。车联网可以实现基于通信的车辆信息通知及碰撞危险预警，通过利用先进的无线通信技术和新一代信息处理技术，实现车与车、车与路侧基础设施间的实时信息交互，告知彼此目前的状态(包括车辆的位置、速度、加速度、行驶路径)及获知的道路环境信息，协作感知道路危险状况，及时提供多种碰撞预警信息，防止道路交通安全事故的发生，成为当前解决道路交通安全问题的一种新的思路。
近年来随着新的移动通信技术的发展，基于长期演进系统LTE(Long Term Evolution)技术来解决车联网通信是热点研究之一。其中，在LTE系统的设备到设备(Device to Device，简称为D2D)通信方式中，用户设备(User Equipment，简称为UE)之间有业务需要传输时，UE之间的业务数据不经过基站的转发，而是直接由数据源UE通过空中接口传输给目标UE，这种通信模式具有明显区别于传统蜂窝系统通信模式的特征，对于车联网的V2V通信来说，车与车之间的近距离通信可以应用D2D通信方式，达到节省了无线频谱资源，降低了核心网的数据传输压力，能够减少系统资源占用，增加蜂窝通信系统频谱效率，降低终端发射功耗，并在很大程度上节省网络运营成本等效果。
V2V通信系统中采用广播的通信方式，由各个UE分别发送自身待通知的广播消息，现有会议已基本达成结论，资源调度分配信息和它相关的业务数据可以是同子帧发送，也可以是不同子帧发送。在控制信道资源池上选择相应PSCCH(Physical Sidelink Control Channel)信道发送SCI(SideLink Control information)，在SCI指示中其相关业务数据的资源分配信息及调度控制相关信息，并在SCI指示的资源上按要求发送其业务信息。接收用户可以通过检测资源池的PSCCH信道或在预配置的位置盲检PSCCH获得SCI信息，从而进一步在其指示的资源上解码相关业务数据，获得发送用户的道路相关信息。
现有V2V通信中，关于资源池的技术讨论主要集中如何配置控制信道与业务数据，主要集中在两个方向，承载发送的SCI信息(SA信息)，SA(Scheduling Assignment)与其相关数据同子帧发送，或SA与其相关数据不同子帧发送，目前资源池讨论集中的两种方案，如图1 和图2所示。在图1方式中，SA资源池集中在V2V频段的两侧或一侧，此时对于SA与其相关数据子帧同子帧发送时，SA与其数据不相邻用户的MPR较高。在图2方式中，SA的资源所含RBs按预定义方式离散分布在频段的多个位置，其SA与数据同子帧发送数频域相邻，减少了MPR，但由于考虑SA盲检次数所采用子信道方式，这样SA与其相邻的data将频域资源按资源块进行划分，data资源分块后缺少资源调度的灵活性。
发明内容
本发明实施例提供了一种V2X通信的信道发送方法及装置，以至少解决相关技术中，SA与其相关数据在同时存在同子帧发送和不同子帧发送时，系统资源的利用效率低，盲检复杂的问题。
根据本发明实施例的一个方面，提供了一种V2X通信的信道发送方法，包括：根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；基于所选择出的信道和信息格式对所述V2X设备进行控制信道发送。
优选地，所述V2X资源池的配置包括以下至少之一：V2V设备的控制信道资源池的配置，V2V设备的业务数据资源池的配置，用于同子帧发送的控制信道数目。
优选地，所述发送模式包括：控制信息与相关的业务信息同子帧发送，或控制信息与相关的业务信息不同子帧发送。
优选地，所述控制信道的首发与重发按预定义的方式发送；或所述控制信道的首发与重发按随机选择方式发送。
优选地，控制信道发送规则进一步包括以下至少之一：
同子帧发送时的控制信道与业务信道按相同规则选择相同的子帧资源发送；
同子帧和不同子帧的控制信道重发时统一按预定义资源发送；
同子帧和不同子帧的控制信道重发时随机选择选择资源发送；
同子帧的控制信道重发时随机选择资源发送，不同子帧的控制信道重发时按预定义资源发送。
优选地，同子帧和不同子帧的控制信道发送采用相同的信道格式；同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，所述信息格式的资源指示信息包括重发SA域资源指示信息和业务数据资源指示信息，其中，重发SA域指示信息至少包括重发SA的频域指示信息和/或时域指示信息，业务数据指示信息包括频域指示信息和时域指示信息，其中，对于同子帧发送，其业务数据的时域指示为0。
优选地，同子帧和不同子帧的控制信道发送采用相同的信道格式；同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义， 所述信息格式的资源指示信息包括业务数据资源指示信息，业务数据指示信息包括频域指示信息和时域指示信息，对于同子帧发送，业务数据的时域指示为0。
优选地，同子帧和不同子帧的控制信道发送采用不相同的资源调度信道格式；同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，其中，对于同子帧发送，所述信息格式资源指示信息包括重发SA域指示信息和业务数据频域指示信息，对于不同子帧发送，所述信道格式包含：重发SA域指示信息，业务数据时域和频域指示信息。
优选地，同子帧和不同子帧的控制信道发送采用不相同的资源调度信道格式；同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，信息格式资源指示信息包括业务数据指示信息，对于同子帧发送时，业务数据指示信息包括频域指示信息；对于不同子帧发送时，所述业务数据指示信息包括频域指示信息和时域指示信息。
优选地，对于同子帧发送时，所述频域指示信息为频域资源占用数，其中，频域资源为一个PRB或预定的资源块；对于不同子帧发送时，所述频域指示信息包括业务数据使用的子帧的频域资源占用指示，其频域占用指示包括以下几种方案：和SA或SA资源池相对偏移量或数据资源池的频域索引及频域资源的占用数目，其中，频域资源为一个PRB或预定的资源块。
优选地，控制信息与业务信道同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为相邻关系；控制信息与业务信道不同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为不相邻关系且在不同子帧。
根据本发明实施例的另一方面，提供了一种V2X通信的信道发送装置，包括：选择模块，设置为根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；发送模块，设置为基于所选择出的信道和信息格式对所述V2X设备进行控制信道及业务数据的发送。
优选地，所述发送模式包括：控制信息与相关的业务信息同子帧发送，或控制信息与相关的业务信息不同子帧发送。
优选地，所述控制信道的首发与重发按预定义的方式发送；或所述控制信道的首发与重发按随机选择方式发送。
优选地，控制信道发送规则进一步包括以下至少之一：
同子帧发送时的控制信道与业务信道按相同规则选择相同的子帧资源发送；
同子帧和不同子帧的控制信道重发时统一按预定义资源发送；
同子帧和不同子帧的控制信道重发时随机选择选择资源发送；
同子帧的控制信道重发时随机选择资源发送，不同子帧的控制信道重发时按预定义资源发送。
优选地，同子帧和不同子帧的控制信道发送采用相同的信道格式；同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，所述信息格式的资源指示信息包括重发SA域资源指示信息和业务数据资源指示信息，其中，重发SA域指示信息至少包括重发SA的频域指示信息和/或时域指示信息，业务数据指示信息包括频域指示信息和时域指示信息，其中，对于同子帧发送，其业务数据的时域指示为0。
优选地，同子帧和不同子帧的控制信道发送采用相同的信道格式；同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，所述信息格式的资源指示信息包括业务数据资源指示信息，业务数据指示信息包括频域指示信息和时域指示信息，对于同子帧发送，业务数据的时域指示为0。
优选地，同子帧和不同子帧的控制信道发送采用不相同的资源调度信道格式；同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，其中，对于同子帧发送，所述信息格式资源指示信息包括重发SA域指示信息和业务数据频域指示信息，对于不同子帧发送，所述信道格式包含：重发SA域指示信息，业务数据时域和频域指示信息。
优选地，同子帧和不同子帧的控制信道发送采用不相同的资源调度信道格式；同子帧或不同子帧重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，信息格式资源指示信息包括业务数据指示信息，对于同子帧发送时，业务数据指示信息包括频域指示信息；对于不同子帧发送时，所述业务数据指示信息包括频域指示信息和时域指示信息。
优选地，对于同子帧发送时，所述频域指示信息为频域资源占用数，其中，频域资源为一个PRB或预定的资源块；对于不同子帧发送时，所述频域指示信息包括业务数据使用的子帧的频域资源占用指示，其频域占用指示包括以下几种方案：和SA或SA资源池相对偏移量或数据资源池的频域索引及频域资源的占用数目，其中，频域资源为一个PRB或预定的资源块。
在本发明的上述实施例中，基于资源池配置参数及发送需求来选择发送控制信息的信道和信息格式，使SA与其相关数据在同时存在同子帧发送和不同子帧发送时用于提高系统资源的利用效率，降低盲检复杂度等效果。同时，保证SA与其相关数据在同子帧发送时的低的MPR，以及不同子帧发送时重发SA保证互听性，以克服半双工问题。
附图说明
此处所说明的附图用来提供对本发明的进一步理解，构成本申请的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是相关技术中SA集中资源池的指示方式；
图2是相关技术中SA分布资源池的指示方式；
图3是根据本发明实施例的发送流程示意图；
图4根据本发明实施例的SA单边资源池时同子帧发送时SA的选择及随机指定重发SA的子帧位置，不同子帧SA按预定义方式选择重发SA资源及业务数据的指示关系示意图；
图5根据本发明实施例的SA双边资源池时同子帧发送时SA的选择及随机指定重发SA的子帧位置，不同子帧SA按预定义方式选择重发SA资源及业务数据的指示关系示意图；
图6根据本发明实施例的SA双边资源池时同子帧，不同子帧发送SA按预定义方式选择重发SA资源及业务数据的指示关系意图；
图7根据本发明实施例的多个同子帧资源配置的频域位置示意图，同子帧发送时SA的选择及随机指定重发SA的子帧位置，不同子帧SA按预定义方式选择重发SA资源及业务数据的指示关系；
图8根据本发明实施例的SA资源池位于中间频段的同子帧，不同子帧SA按预定义方式选择重发SA资源及业务数据的指示关系示意图；
图9根据本发明实施例的SA资源池多个同子帧资源配置的频域位置的结构示意图；
图10根据本发明实施例的发送装置模块结构图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本发明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
基于LTE的D2D通信系统中，使用系统上行子帧作为物理链路共享信道PSSCH(Physical Sidelink Shared Channel)子帧，用于传输D2D数据。D2D发送端UE在链路(即D2D链路)控制信息SCI(Sidelink Control Information)中指示所使用的PSSCH资源。V2V系统作为一种D2D通信方式的特殊应用，可以使用D2D通信方案，即采用SCI信息指示相应的数据信道资源分配信息，即SA(Scheduling Assignment)，并在相应的数据信道资源上传输V2V业务数据信息。
系统的频域资源包含若干RB，其中，系统可用RB是指可以用于此通信系统(如D2D，V2V系统)信号承载的RB，可用RB可以是系统带宽内实际连续的物理RB资源，也可以是多个离散的物理RB资源。当实际可用的RB为离散物理RB时，可以将离散RB从逻辑上进行顺序编号，形成逻辑连续的RB资源，系统的频域资源划分为一个或多个控制资源池和一个或多个数据共享资源池，其中控制信道资源池和数据资源池之间所包含的RB不重叠。
系统中SA和data资源池配置信息需要通过一定的方式通知给系统中的UE，配置信息为公共信息，应为所有可用UE共同获知，可以采用系统预定义，系统广播消息(系统信息块，System Information Block，SIB)，或高层信令，如无线资源控制(Radio Resource Control，RRC) 消息进行指示。对于mode1基于基站控制的V2V，其用户发送模式(SA与其相关数据同子帧发送和SA与其相关数据不同子帧发送)，由基站根据用户上报信息，基站调度信息决定；而对于mode2(随机资源选择)，用户根据侦听结果，业务信息类型选择发送模式。并根据发送模式和发送规则选择SA首发和重发的信道资源，信息格式，及业务数据信道资源进行发送；接收UE盲检SA，对于所有发送SA采用相同的格式则在SA资源池按设置的格式检测SA的信息内容，对于发送SA采用不同格式则按SA与数据资源池的相邻关系所对应的格式检测SA的信息内容，并按SA的信息内容指示的资源位置按控制信息指示解码对应的数据信息。
在本实施例中提供了一种V2V通信的资源调度方法，图3是根据本发明实施例的V2V通信的资源调度的流程图，如图3所示，该方法包括如下步骤：
步骤S302：根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；
步骤S304：基于所选择出的信道和信息格式对所述V2X设备进行控制信道发送。
在本实施例中，所发送模式可以包括：控制信息与相关的业务信息同子帧发送，或控制信息与相关的业务信息不同子帧发送。
其中，所述控制信道的首发与重发按预定义的方式发送；或所述控制信道的首发与重发按随机选择方式发送。
在上述实施例中，控制信道发送规则进一步包括：
同子帧发送时的控制信道与业务信道按相同规则选择相同的子帧资源发送；
同子帧和不同子帧的控制信道重发时统一按预定义资源发送；
同子帧和不同子帧的控制信道重发时随机选择选择资源发送；
同子帧的控制信道重发时随机选择资源发送，不同子帧的控制信道重发时按预定义资源发送。
优选地，同子帧和不同子帧的发送采用相同的信道格式；同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，所述信息格式的资源指示信息包括重发SA域资源指示信息和业务数据资源指示信息，其中，重发SA域指示信息至少包括重发SA的频域指示信息和/或时域指示信息，业务数据指示信息包括频域指示信息和时域指示信息，其中，对于同子帧发送，其业务数据的时域指示为0。
优选地，同子帧和不同子帧的发送采用相同的信道格式；同子帧或不同子帧发送重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，所述信息格式的资源指示信息包括业务数据资源指示信息，业务数据指示信息包括频域指示信息和时域指示信息，对于同子帧发送，业务数据的时域指示为0。
优选地，同子帧和不同子帧的发送采用不相同的资源调度信道格式；同子帧或不同子帧 重发时，控制信道随机选择发送资源，其中，对于同子帧发送，所述信息格式资源指示信息包括重发SA域指示信息和业务数据频域指示信息，对于不同子帧发送，所述信道格式包含：重发SA域指示信息，业务数据时域和频域指示信息。
优选地，同子帧和不同子帧的发送采用不相同的资源调度信道格式；同子帧或不同子帧重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，信息格式资源指示信息包括业务数据指示信息，对于同子帧发送时，业务数据指示信息包括频域指示信息；对于不同子帧发送时，所述业务数据指示信息包括频域指示信息和时域指示信息。
优选地，对于同子帧发送时，所述频域指示信息为频域资源占用数，其中，频域资源为一个PRB或预定的资源块；对于不同子帧发送时，所述频域指示信息包括业务数据使用的子帧的频域资源占用指示，其频域占用指示包括以下几种方案：和SA或SA资源池相对偏移量或数据资源池的频域索引及频域资源的占用数目，其中，频域资源为一个PRB或预定的资源块。
优选地，控制信息与业务信道同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为相邻关系；控制信息与业务信道不同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为不相邻关系且在不同子帧。
为了便于对本发明的理解，下面提供一个详细的实施例，该实施例的资源调度包括如下步骤：
步骤一：参数获取，通过SA与data资源池的配置获得资源调度参数，具体参数如表1所示：
表1：指示SA资源与数据资源的配置关系
Figure PCTCN2017093236-appb-000001
Figure PCTCN2017093236-appb-000002
上述资源池配置决定了可用于同子帧发送资源的最大数目，根据同子帧的发送预配置参数决定具体使用的同子帧发送数目。
1)Mode2：
对于mode2UE可以在V2V资源池，依发送模式通过随机选择或侦听获得空余资源后进行随机选择的SA信道资源和重发SA的信道资源及其数据data资源用于控制信息和/或数据信息的承载发送，例如发送模式为同子帧则选用于的同子帧发送SA信道资源，如与数据资源池相邻的SA，否则，选择不同子帧发送的SA信道资源，并在所选择的PSCCH资源上发送SCI(即SA)，在SCI中指示所选择的PSSCH资源，进一步在选择的PSSCH资源上承载发送业务数据。
2)Mode1基于mode1由eNB调度。
对于Mode1，Mode 1 V2V通讯是指由eNB调度Tx UE进行data通讯，即Tx UE传输的每一个数据包的资源都由eNB配置进行指示，覆盖内的Vehicle UE与eNB建立RRC连接后，可以在eNB的配置下进行Mode1的通讯。
eNodeB通过下行DCI信令，显示或隐示指示Tx UE所使用的sidelink链路资源配置信息和控制信息及SA资源选择信息，具体资源配置信息如表2所示：
表2
Figure PCTCN2017093236-appb-000003
Figure PCTCN2017093236-appb-000004
Vehicle Tx UE从eNB获得其用于V2V通讯的资源配置，即通过盲检DCI获得V2V的控制信道PSCCH资源配置信息及SCI信息(即SA)也就是用于业务数据发送的资源配置信息。其中PSCCH资源用于TxUE向Rx UE发送SCI信息(即SA)，这里通过SA resource index指示所配置的PSCCH时域和频域资源，具体指示方法见表二的描述，Tx UE在配置的PSCCH资源上按照eNB的配置指示相应的SCI信息，即指示PSSCH的资源，并在相应的PSCCH及PSSCH资源上进行控制及业务数据的发送。具体描述如步骤二
步骤二：SA的发送格式及方式
1)SA pattern结构发送
其中，SA资源与data资源相邻的子帧用于发送同子帧SA，可以与不同子帧发送的SA共同采用pattern结构提高互听能力，即首发与重发按预定义方式发送，如图6所示的同子帧发送SA，其重发时，与不同子帧发送的SA和位于同一SA资源池的同子帧SA可以通过pattern结构重发，即SA首发与重发的资源按一定规律发送，当其以pattern结构重发时，由于重发资源固定，同子帧发送SA的资源指示信息仅需要指示当前的资源占用数量信息，因此和不同子帧发送的SCI开销会有较大不同，且由于同子帧和不同子帧的位置关系决定了其是否是同子帧发送，因此，采用两种格式SCI进行发送，并不会增加盲检的复杂度。因此，可以同子帧发送采用的关于资源调度的参数包含如下表3-1所示的参数：
表3-1
Figure PCTCN2017093236-appb-000005
在本实施例中，对于同子帧数据资源位于SA仅邻的频率资源上方和下方，具体位置由SA与数据资源的关系决定。
不同子帧发送时的SCI格式关于资源调度包含的参数为：其内容包含频域资源指示和时域资源指示，如表3-2所示：(注：但采用相同信息格式，同子帧不同子帧控制信道均采用表3-2)
表3-2
Figure PCTCN2017093236-appb-000006
2)同子帧发送随机发送时SA重发由上一次调度信息指示，不同子帧发送时SA以固定pattern进行发送。
其中，SA资源与data资源相邻的同子帧用于发送SA，可以选择随机选择重发资源，如图4和图5，同子帧发送时在第一次发送SA时指示第二次发送SA的资源位置，其发送SCI信息的格式可以和不同子帧一致，或不一致，具体是否是同子帧发送由SA在SA资源池的位置决定，且在SA中指示重发的子帧位置。图7为除配置的紧邻不同子帧SA资源池的同子帧SA外在预定义的位置还有同子帧SA资源，如SA pool2，这时的频域资源指示中根据需要进一步指示使用的是SA的上边频率还是SA的下边频率，或其他不相邻的SA资源其频域指示为单上边或单下边频段。
因此，同子帧发送采用与不同子帧资源调度的参数不同时的参数包含如表3-3所示：
同子帧发送时其子帧调度信息除频域资源数目信息外包括下一次发送的SA与数据的时域信息。
表3-3
Figure PCTCN2017093236-appb-000007
Figure PCTCN2017093236-appb-000008
SA与相关的数据同子帧和不同子帧发送时采用相同的SCI格式包含的参数为，其中SA在资源池的位置关系决定SA与其数据是否为同子帧发送，当是同子帧发送时，其数据资源域指示的为其重发的SA的资源位置T-RPT，如表3-4，统一的资源指示方法，
对于不同子帧发送，其调度信息包含频域指示信息，发送的业务数据的时域资源信息，如表3-4所示：(注：由于不同子帧按pattern结构，其重发SA为预定义位置，无需指示)
表3-4
Figure PCTCN2017093236-appb-000009
Figure PCTCN2017093236-appb-000010
3)同子帧与不同子帧发送时SA随机选择发送。即SA及重发选择无固定规律，对于不同子帧其数据资源位于SA重发之后的时频域资源，其中SA在资源池的位置关系决定SA与其数据是否为同子帧发送。SA首发中不仅要指示data子帧位置，也需指示SA重发的资源位置。对于SA的指示分频域指示信息和时域指示信息，对于首发SA和重发SA配置采用相同的频段资源，则SA指示信息可以仅包含其重发的SA时域偏置信息，以进一步降低SA指示信息开销。
由于同子帧随机选择资源发送，其SCI指示含义频域资源数目信息，不含时域资源指示信息，其同子帧发送，其时域信息为隐含信息。同子帧不同子帧采用相同格式指示如表4-1所示：
表4-1
Figure PCTCN2017093236-appb-000011
本实施例还可以采用另一种指示方式，即，统一SA与data结合的bitmap指示方式，假定子帧SA两次重发，如1001000000，其中，1表示是同子帧发送，第二个1是重发的同子帧位置。如0001001101，其中，0表示不同子帧发送，第二个1是SA重发位置，1101是数据发送子帧。此时，为了降低SA的频域偏置开销，SA首发重发选择同一频域位置。
同子帧与不同子帧采用不同的发送格式，即不同子帧采用表4-1，同子帧采用表4-2所示：
表4-2
Figure PCTCN2017093236-appb-000012
4)不同子帧调度信息重发时按规则选择资源发送，同子帧调度随机选择资源发送。同子帧发送时其子帧调度信息仅有频域资源数目信息，对于是否是SA紧邻的上频段还是下频段，可以通过1bit开销指示，图6，图7所示。对于不同子帧发送，其调度信息包含频域指示信息，发送的子帧信息。
步骤三：接收UE按预配置或RRC信令获得SA与data的资源池配置，根据相应的信令参数在相应的位置按相应的格式检测资源调度信息，后在对应的位置解码相应的业务数据。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
在本实施例中还提供了一种V2V通信的资源调度装置，该装置包括：选择模块10和发送模块20.其中，选择模块10设置为根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式。发送模块20设置为基于所选择出的信道和信息格式对所述V2X设备进行控制信道发送。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。
本发明的实施例还提供了一种存储介质，该存储介质存储了用于执行上述实施例的程序代码，该存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。
显然，本领域的技术人员应该明白，上述的本发明的各模块或各步骤可以用通用的计算 装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (26)

  1. 一种V2X通信的信道发送方法，包括：
    根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；
    基于所选择出的信道和信息格式对所述V2X设备进行控制信道发送。
  2. 根据权利要求1所述的方法，其中，所述V2X资源池的配置包括以下至少之一：
    V2V设备的控制信道资源池的配置，V2V设备的业务数据资源池的配置，用于同子帧发送的控制信道数目。
  3. 根据权利要求1所述的方法，其中，所述发送模式包括：
    控制信息与相关的业务信息同子帧发送，或控制信息与相关的业务信息不同子帧发送。
  4. 根据权利要求1所述的方法，其中，控制信道发送规则包括以下至少之一：
    所述控制信道的首发与重发按预定义的方式发送；
    所述控制信道的首发与重发按随机选择方式发送。
  5. 根据权利要求3或4所述的方法，其中，控制信道发送规则还包括以下至少之一：
    同子帧发送时的控制信道与业务信道按相同规则选择相同的子帧资源发送；
    同子帧和不同子帧的控制信道重发时统一按预定义资源发送；
    同子帧和不同子帧的控制信道重发时随机选择选择资源发送；
    同子帧的控制信道重发时随机选择资源发送，不同子帧的控制信道重发时按预定义资源发送。
  6. 根据权利要求3所述的方法，其中，同子帧和不同子帧的控制信道发送采用相同的信道格式。
  7. 根据权利要求6所述的方法，其中，同子帧或不同子帧发送控制信道重发时，控制信道随机选择发送资源，所述信息格式的资源指示信息包括重发SA域资源指示信息和业务数据资源指示信息，其中，重发SA域指示信息至少包括重发SA的频域指示信息和/或时域指示信息，业务数据指示信息包括频域指示信息和时域指示信息，其中，对于同子帧发送，其业务数据的时域指示为0。
  8. 根据权利要求6所述的方法，其中，同子帧或不同子帧发送控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，所述信息格式的资源指示信息包括业务数据资源指示信息，业务数据指示信息包括频域指示信息和时域指示信息，对于同子帧发送，业务数据的时域指示为0。
  9. 根据权利要求3所述的方法，其中，同子帧和不同子帧的发送控制信道采用不相同的资源调度信道格式。
  10. 根据权利要求9所述的方法，其中，同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，其中，对于同子帧发送，所述信息格式资源指示信息包括重发SA域指示信息和业务数据频域指示信息，对于不同子帧发送，所述信道格式包含：重发SA域指示信息，业务数据时域和频域指示信息。
  11. 根据权利要求9所述的方法，其中，同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，信息格式资源指示信息包括业务数据指示信息，对于同子帧发送时，业务数据指示信息包括频域指示信息；对于不同子帧发送时，所述业务数据指示信息包括频域指示信息和时域指示信息。
  12. 根据权利要求10或11所述的方法，其中，对于同子帧发送时，所述频域指示信息为频域资源占用数，其中，频域资源为一个PRB或预定的资源块；对于不同子帧发送时，所述频域指示信息包括业务数据使用的子帧的频域资源占用指示，其频域占用指示包括以下几种方案：和SA或SA资源池相对偏移量或数据资源池的频域索引及频域资源的占用数目，其中，频域资源为一个PRB或预定的资源块。
  13. 根据权利要求3所述的方法，其中，
    控制信息与业务信道同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为相邻关系；
    控制信息与业务信道不同子帧发送时，控制信息信道与业务数据信道的频域物理资源或逻辑资源为不相邻关系且在不同子帧。
  14. 一种V2X通信的信道发送装置，包括：
    选择模块，设置为根据V2X设备的信道资源池的配置，发送模式，以及控制信道发送规则选择发送控制信息的信道和信息格式；
    发送模块，设置为基于所选择出的信道和信息格式对所述V2X设备进行控制信道及业务信道发送。
  15. 根据权利要求14所述的装置，其中，所述V2X资源池的配置包括以下至少之一：
    V2V设备的控制信道资源池的配置，V2V设备的业务数据资源池的配置，用于同子帧发送的控制信道数目。
  16. 根据权利要求14所述的装置，其中，所述发送模式包括：
    控制信息与相关的业务信息同子帧发送，或控制信息与相关的业务信息不同子帧发送。
  17. 根据权利要求14所述的装置，其中，控制信道发送规则包括以下至少之一：
    所述控制信道的首发与重发按预定义的方式发送；
    所述控制信道的首发与重发按随机选择方式发送。
  18. 根据权利要求16或17所述的装置，其中，所述控制信道发送规则进一步包括以下至少之一：
    同子帧发送时的控制信道与业务信道按相同规则选择相同的子帧资源发送；
    同子帧和不同子帧的控制信道重发时统一按预定义资源发送；
    同子帧和不同子帧的控制信道重发时随机选择选择资源发送；
    同子帧的控制信道重发时随机选择资源发送，不同子帧的控制信道重发时按预定义资源发送。
  19. 根据权利要求16所述的装置，其中，同子帧和不同子帧的发送控制信道采用相同的信道格式。
  20. 根据权利要求19所述的装置，其中，同子帧或不同子帧控制信道重发时，控制信道随机选择发送资源，所述信息格式的资源指示信息包括重发SA域资源指示信息和业务数据资源指示信息，其中，重发SA域指示信息至少包括重发SA的频域指示信息和/或时域指示信息，业务数据指示信息包括频域指示信息和时域指示信息，其中，对于同子帧发送，其业务数据的时域指示为0。
  21. 根据权利要求19所述的装置，其中，同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，所述信息格式的资源指示信息包括业务数据资源指示信息，业务数据指示信息包括频域指示信息和时域指示信息，对于同子帧发送，业务数据的时域指示为0。
  22. 根据权利要求16所述的装置，其中，同子帧和不同子帧的控制信道发送采用不相同的资源调度信道格式。
  23. 根据权利要求22所述的装置，其中，同子帧或不同子帧重发时，控制信道随机选择发送资源，其中，对于同子帧发送，所述信息格式资源指示信息包括重发SA域指示信息和业务数据频域指示信息，对于不同子帧发送，所述信道格式包含：重发SA域指示信息，业务数据时域和频域指示信息。
  24. 根据权利要求22所述的装置，其中，同子帧或不同子帧控制信道重发时，控制信道按预定义的规则选择发送资源，重发SA资源由预定义的规则定义，信息格式资源指示信息包括业务数据指示信息，对于同子帧发送时，业务数据指示信息包括频域指示信息；对于不同子帧发送时，所述业务数据指示信息包括频域指示信息和时域指示信息。
  25. 根据权利要求23或24所述的装置，其中，对于同子帧发送时，所述频域指示信息为频域资源占用数，其中，频域资源为一个PRB或预定的资源块；对于不同子帧发送时，所 述频域指示信息包括业务数据使用的子帧的频域资源占用指示，其频域占用指示包括以下几种方案：和SA或SA资源池相对偏移量或数据资源池的频域索引及频域资源的占用数目，其中，频域资源为一个PRB或预定的资源块。
  26. 一种计算机可读存储介质，存储有计算机程序，当所述计算机程序被运行时，执行权利要求1至13中任一项所述的方法。
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