WO2015139319A1 - 直接通信中的数据传输设备及方法 - Google Patents
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1887—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/25—Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/40—Resource management for direct mode communication, e.g. D2D or sidelink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission device and method in direct communication. Background technique
- D2D Device to Device
- cellular terminal pass-through device the terminal can communicate with the base station in the same way as the ordinary wireless terminal, and also It can directly communicate with another cellular through terminal. Due to the occlusion of the terrain and the time-varying characteristics of the wireless signal, the cellular coverage actually has a hole. In the public security requirement, the cellular through terminal is required to have network coverage and no network coverage. Can be applied at the time. Usually public safety personnel are multiple people who form a group to act. This is called a group or cluster.
- the downlink data transmission adopts the hybrid automatic repeat request (Hybrid Automatic Repeat Request) (HARQ) method, and the uplink data adopts the synchronous retransmission mode.
- Hybrid Automatic Repeat Request Hybrid Automatic Repeat Request
- Embodiments of the present invention provide a data transmission device and method in direct communication, which are used to implement reliable transmission of data in D2D communication.
- a first aspect of the present invention provides a sender user equipment, including:
- a sending module configured to send scheduling signaling to the receiving user equipment UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information;
- a processing module configured to send user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling.
- the scheduling signaling further includes a repeated transmission of the data packet
- the processing module is specifically configured to:
- the scheduling signaling in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, according to the data The number of repeated transmissions of the packet, and the user data is repeatedly transmitted to the recipient UE.
- the processing module is further configured to:
- the HARQ processing process acquires the first PDU in the media access control packet data unit MAC PDU buffer, and records the number of transmissions as 0; if the HARQ processing process is based on the identifier of the HARQ processing process And determining, by the transmission pattern, that the transmission subframe of the first PDU arrives, sending the first PDU to the receiver UE by using a transmission subframe of the first PDU, and adding the number of transmissions to one, Until the number of transmissions reaches the number of repeated transmissions of the data packet.
- a third possible implementation manner of the first aspect if the resource corresponding to the first HARQ processing process is allocated to another sender UE, the processing is performed.
- the module stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the data packet.
- the processing module is further configured to:
- the scheduling signaling The indication that the data packet is new data is further included, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sender UE is new data.
- the scheduling signaling further includes: Identification information, where the identifier information is used to indicate a priority of using the frequency domain resource by the sender UE.
- the scheduling signaling further includes: The type of service for the user data sent.
- the processing module is further configured to:
- the sending module Before the sending module sends the scheduling signaling to the receiver UE, receiving scheduling signaling sent by the base station.
- a second aspect of the present invention provides a receiver user equipment, including:
- a receiving module configured to receive scheduling signaling sent by the sending user equipment UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information; And the scheduling signaling received by the receiving module, and receiving user data sent by the sending UE.
- the scheduling signaling further includes a repeated transmission of the data packet
- the processing module is specifically configured to:
- the scheduling signaling received by the receiving module in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, and according to the transmission pattern information Transmitting the pattern, and repeatedly receiving the user data repeatedly sent by the sender UE according to the repeated transmission times of the data packet.
- the processing module is further configured to:
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate the sender User data to be sent by the UE is new data;
- the processing module is further configured to:
- the transmission pattern receives new user data sent by the sender UE.
- the scheduling signaling further includes the sending The service type of the user data to be sent by the UE;
- the processing module is further configured to:
- a sender user equipment including a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory;
- the transmitter is configured to send scheduling signaling to the receiving user equipment UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information.
- the processor is configured to send user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling.
- the scheduling signaling further includes a repeated transmission of the data packet
- the processor is specifically configured to:
- the scheduling signaling in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, according to the data The number of repeated transmissions of the packet, and the user data is repeatedly transmitted to the recipient UE.
- the processor is further configured to: Controlling the automatic retransmission request of the transmitting UE, the HARQ processing process acquires the first PDU in the media access control packet data unit MAC PDU buffer, and records the number of transmissions as 0; if the HARQ processing process is based on the identifier of the HARQ processing process And determining, by the transmission pattern, that the transmission subframe of the first PDU arrives, sending the first PDU to the receiver UE by using a transmission subframe of the first PDU, and adding the number of transmissions to one, Until the number of transmissions reaches the number of repeated transmissions of the data packet.
- a third possible implementation manner of the third aspect if the resource corresponding to the first HARQ processing process is allocated to another sender UE, the processing is performed.
- the device stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the data packet.
- the processor is further configured to:
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate the sender The user data to be sent by the UE is new data.
- the scheduling signaling further includes: Identification information, where the identifier information is used to indicate a priority of using the frequency domain resource by the sender UE.
- the scheduling signaling further includes: The type of service for the user data sent.
- the processor is further configured to: generate the scheduling signaling before the sending, by the sender, the scheduling signaling to the receiver UE; or ,
- the scheduling signaling sent by the base station is received.
- a receiver user equipment including a transmitter, a receiver, a memory, and a processor respectively connected to the transmitter, the receiver, and the memory;
- the receiver is configured to receive scheduling signaling sent by the sending user equipment UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information; And receiving, according to the scheduling signaling received by the receiver, user data sent by the sender UE.
- the scheduling signaling further includes a number of repeated transmissions of the data packet
- the processor is specifically configured to:
- the scheduling signaling received by the receiver in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, and according to the transmission pattern information Transmitting the pattern, and repeatedly receiving the user data repeatedly sent by the sender UE according to the repeated transmission times of the data packet.
- the processor is further configured to:
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate the sender User data to be sent by the UE is new data;
- the processor is further configured to:
- the scheduling signaling received by the receiver, in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, and according to the transmission pattern information
- the transmission pattern receives new user data sent by the sender UE.
- the scheduling signaling further includes the sending The service type of the user data to be sent by the UE;
- the processor is further configured to:
- a fifth aspect of the present invention provides a data transmission method in direct communication, including: a sender user equipment UE sends scheduling signaling to a receiver UE, where the scheduling signaling includes frequency domain resource information, a number of cycles that can be occupied, and Transmitting at least one of the pattern information;
- the sender UE sends user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling.
- the scheduling signaling further includes a number of repeated transmissions of the data packet
- the sender UE sends user data to the receiver UE according to the scheduling signaling, including:
- the sending by the sending UE, the transmission indicated by the number of cycles that can be occupied according to the scheduling signaling And transmitting, in the sub-frame, the frequency domain position indicated by the frequency domain resource information, according to the transmission pattern indicated by the transmission pattern information, and repeatedly transmitting the user data to the receiver UE according to the repeated transmission times of the data packet, including :
- the automatic retransmission request of the sender UE, the HARQ processing process acquires the first PDU in the media access control packet data unit MAC PDU buffer, and records the number of transmissions as 0;
- the HARQ processing process of the sender UE determines that the transmission subframe of the first PDU arrives according to the identifier of the HARQ processing process and the transmission pattern, the receiving subframe of the first PDU is received by the transmission subframe.
- the UE transmits the first PDU, and adds the number of transmissions to one, The number of transmissions to the number of repeated transmissions of the data packet is reached.
- the sending The party UE stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the data packet.
- the sending by the sending UE, the transmission indicated by the number of cycles that can be occupied according to the scheduling signaling And transmitting, in the sub-frame, the frequency domain position indicated by the frequency domain resource information, according to the transmission pattern indicated by the transmission pattern information, and repeatedly transmitting the user data to the receiver UE according to the repeated transmission times of the data packet, including :
- the second PDU includes an identifier for transmitting the HARQ process.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate the sender The user data to be sent by the UE is new data.
- the scheduling signaling further includes the sending Identification information of the UE, where the identifier information is used to indicate a priority of using the frequency domain resource by the sender UE.
- the scheduling signaling further includes the sender The service type of the user data to be sent by the UE.
- the sender UE receives scheduling signaling sent by the base station.
- a sixth aspect of the present invention provides a data transmission method in direct communication, including: receiving, by a user equipment, a UE, scheduling signaling sent by a sender UE, where the scheduling signaling includes frequency domain resource information, and a number of cycles that can be occupied And transmitting at least one of the pattern information;
- the receiving UE receives user data sent by the sender UE according to the scheduling signaling.
- the scheduling signaling further includes a number of repeated transmissions of the data packet;
- the receiving UE includes:
- the receiving UE according to the scheduling signaling, in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, and the transmission pattern indicated by the transmission pattern information. And repeatedly receiving the user data repeatedly sent by the sender UE according to the repeated transmission times of the data packet.
- the receiving UE indicates the transmission in the number of cycles that can be occupied.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate the sender User data to be sent by the UE is new data;
- the receiving UE includes:
- the scheduling signaling further includes the sending The service type of the user data to be sent by the UE;
- the method further includes:
- the receiving UE establishes a radio link control RLC entity corresponding to the service type according to the service type;
- the receiving UE configures parameters of the RLC entity according to a configuration table corresponding to the service type in a configuration table stored in the receiving UE in advance.
- the sending module sends the scheduling signaling to the receiving user equipment UE, where the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information.
- the processing module sends user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling, which may be implemented in a direct communication process.
- the transmitting UE may repeatedly transmit the user data, and the receiving UE may repeatedly receive the user data, and perform the combining processing on the received duplicate data, thereby improving the reliability of the data transmission.
- Embodiment 1 is a schematic structural diagram of Embodiment 1 of a sender user equipment according to the present invention
- FIG. 2 is a schematic diagram of a transmission pattern in scheduling signaling
- FIG. 3 is a schematic diagram of a UE
- 4 is a schematic diagram of a correspondence between a transmission subframe number and a HARQ process identifier
- FIG. 5 is a schematic structural diagram of Embodiment 2 of a sender user equipment according to the present invention.
- FIG. 6 is a schematic structural diagram of Embodiment 1 of a receiver user equipment according to the present invention.
- FIG. 7 is a schematic structural diagram of Embodiment 2 of a receiver user equipment according to the present invention
- FIG. 8 is a flowchart of Embodiment 1 of a data transmission method in direct communication according to the present invention
- FIG. 9 is a flowchart of Embodiment 2 of a data transmission method in direct communication provided by the present invention
- the sender user equipment of this embodiment includes: a sending module 11 and a processing module 12, where the sending module 11 is configured to The receiving UE sends the scheduling signaling, where the scheduling signaling includes at least one of the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information.
- the processing module 12 is configured to send the user data to the receiver UE according to the scheduling signaling.
- the receiver UE is configured to receive user data according to the scheduling signaling.
- the frequency domain resource information in the scheduling information of the embodiment may include a frequency domain resource index or a maximum range of the frequency domain resource. If only one user sends data at the same sending time, the frequency domain resource information may be a frequency domain resource. The maximum range; if there are multiple users transmitting data at the same transmission time, the frequency domain resource information is a frequency domain resource index, and the number of cycles that can be occupied is used to indicate the number of cycles that the user data sent by the sender UE can occupy.
- the transmission pattern information may include, in one cycle, which time the sender UE can occupy and the manner in which the data packet is repeated.
- UE A is in each 8 milliseconds. In the case, it can take 1 and 3 milliseconds to transmit.
- the repetition mode of the data packet can include immediate repetition, gP, 1 and 3 milliseconds of time to send the same data packet, or the minimum interval of discontinuous repetition and repetition, gp, one data.
- the scheduling signaling in this embodiment may include at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information, and the information includes only one type of information or two types of information. In the case, the remaining two or one kind of information is fixed.
- the transmission pattern information and the number of cycles that can be occupied are fixed.
- the scheduling signaling in this embodiment only the number of cycles that can be occupied is included.
- the frequency domain resource information and the transmission pattern information are fixed, and may specify that the frequency domain location occupied by the scheduling signaling has a fixed correspondence with the frequency domain location occupied by the user data, for example, if the scheduling signaling is in every two physical resource blocks (Physical)
- the data block is transmitted on the third symbol of the resource block, and the data information is transmitted on the symbols other than the third symbol and the pilot symbol in the two PRBs.
- the scenario in which the pattern information is transmitted, the frequency domain resource information and the number of cycles that can be occupied are fixed.
- the processing module 12 of the sender UE occupies the location of the frequency domain resource indicated by the frequency domain resource information according to the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information in the scheduling signaling, and the transmission indicated by the number of cycles that can be occupied. Transmitting the user data to be sent in the time subframe, the receiving UE receives the transmitting UE according to the transmission pattern indicated by the transmission pattern information in the transmission subframe indicated by the number of cycles that can be occupied and the frequency domain position indicated by the frequency domain resource information. User data sent.
- the repeated transmission of the user data is determined by the processing module 12 of the sender UE according to the scheduling signaling, and does not depend on whether the receiver UE feedbacks, and the receiver UE may not be implemented in the direct communication process.
- the transmitting UE can repeatedly transmit user data
- the receiving UE can repeatedly receive user data, and combine and process the received duplicate data, thereby improving the reliability of data transmission.
- the sending user equipment is sent by the sending module 11 to the receiving UE, and the scheduling signaling includes at least one of the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the processing module 12 Transmitting the user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling, and the sender UE may repeatedly transmit the user data in the case that the receiver UE does not have feedback during the direct communication process.
- the receiving UE can repeatedly receive user data, and combines the received duplicate data to improve the reliability of data transmission.
- the scheduling signaling further includes the number of repeated transmissions of the data packet
- the processing module 12 is specifically configured to:
- the scheduling signaling in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, and the repetition according to the data packet The number of transmissions, repeatedly transmitting user data to the receiving UE.
- processing module 12 is further configured to:
- the first PDU is obtained in the Medium Access Control (MAC) Packet Data Unit (PDU) cache, and the number of transmissions is 0; if the HARQ process is performed, the HARQ process is controlled by the sender.
- MAC Medium Access Control
- PDU Packet Data Unit
- the first PDU is sent to the receiver UE by using the transmission subframe of the first PDU, and the number of transmissions is increased by one until the number of transmissions reaches the data packet. The number of repeated transmissions.
- FIG. 3 is a schematic diagram of a UE.
- the UE has a Radio Link Control (RLC) module and a MAC module.
- the MAC module includes a PDU buffer area and a HARQ processing process area.
- the HARQ processing process is used. Processing data transmission (including initial transmission and repeated transmission), data reception and merge verification, and data delivery to the PDU buffer.
- the number of HARQ processing processes is defined according to the processing capability of the UE. In the cellular system. It is generally considered that there are 8 HARQ processes, and in a multiple input and multiple output system, there may be 16 HARQ processes. D2D group users may have D2D communication and cellular communication at the same time. It is also possible that any kind of communication will occur separately.
- the HARQ processing process can be used in combination with cellular communication and D2D communication, that is, only In cellular communication, the HARQ processing process is completely occupied by the cell.
- D2D communication is performed, the HARQ process is all occupied by D2D communication.
- both are available, they will occupy some HARQ processing processes respectively.
- This embodiment can assume that only D2D communication is available, and the HARQ processing process can all be occupied by D2D communication.
- the UE When the UE is the sender UE, for example, it can be determined that the data can be transmitted in two time subframes according to the information in the scheduling signaling, so it is determined that two services, that is, RLC3 represents one service, and RLC5 represents another service, Both are used to transfer data. Therefore, there are two service data packets in the MAC PDU buffer, and the number of repeated transmissions of each service data packet may be the same or different. The following is the same as the repeated transmission times: RLC3 stands for voice service, and RLC5 stands for picture transmission service. The maximum number of repeated transmissions of the two is 4, and the two services respectively generate multiple data packets and send them to the MAC PDU buffer area.
- the HARQ processing process repeats the transmission of the previous data packet 4 times to the MAC PDU according to its own transmission condition.
- a new PDU is taken in the cache, and the number of transmissions is 0.
- the transmission is transmitted when the UE transmits the transmission subframe, and the number of transmissions is changed after the transmission.
- FIG. 4 is a schematic diagram of the correspondence between the transmission subframe number and the HARQ process identifier.
- the calculation process can also be performed in advance for more time.
- the data transmission is completed by the physical layer, and the HARQ process identifier used for transmission is according to scheduling signaling.
- the transmission pattern in the calculation is obtained, that is, the sender UE processes the transmission of the MAC PDU by using the HARQ processing procedure No. 1, 2, and the receiver UE demodulates the received data and sends it to the HARQ process identifier as 1 or 2 for processing. Processed in the process.
- the processing module 12 stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the packet.
- the processing after the transmission pattern of the sender UE is changed is described.
- the transmission resource of the UE A is used by the UE B.
- the transmission resources of UE A will be less. For example, there are 2 subframes in each frame to transmit the data of UE A. Only one subframe can transmit the data of UE A, so that a HARQ processing process cache is generated. If the number of repetitions of the data has not been completed, the transmission cannot be performed again. This is because the HARQ process is associated with the transmitted subframe number.
- UE A can be in the HARQ process buffer. The data continues to be retransmitted. After the remaining number of times is completed, the process is no longer used. After the UE B obtains the information that can use the resource, it waits for a repetition of the X repetition interval and starts using the resource.
- the sending user equipment provided by the sending unit sends the scheduling signaling to the receiving UE by the sending module 11 of the sending UE.
- the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, the transmission pattern information, and the repetition of the data packet.
- the number of repeated transmissions of the packet, the user data is repeatedly transmitted to the receiver UE, and the sender UE can repeatedly transmit the user data in the case that the receiver UE does not have feedback in the direct communication process, and the receiver UE can repeatedly receive the user.
- the data, and the combined processing of the received duplicate data improves the reliability of data transmission.
- the processing module 12 is further configured to:
- the HARQ processing process fetches data from the MAC PDU each time it is sent.
- the MAC PDU buffer will give the HARQ processing process appropriate data according to the sending status and repeat status of a PDU. For example: If the sender UE obtains the transmission capability of 2 consecutive subframes in one frame, the first subframe transmits MAC PDU1, and the second subframe must transmit MAC PDU2, and cannot continue to send MAC PDU1 because of the scheduling signal.
- the MAC PDU buffer will give the HARQ processing process a duplicate data packet, and the first transmission and the subsequent repeated transmission may occur.
- the sender UE notifies the receiver of the process number used by the receiver in the data packet, so that the receiver UE can combine the received duplicate data
- the receiver After receiving a new data packet, the UE demodulates the data packet into a soft bit and sends it to the HARQ processing process cache corresponding to the data packet.
- the UE also carries the process number carried according to the data packet. , the soft bits are sent to the corresponding HARQ process process cache for merging.
- the sending user equipment provided by the sending unit sends the scheduling signaling to the receiving UE by the sending module 11 of the sending UE.
- the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, the transmission pattern information, and the repetition of the data packet.
- the number of repeated transmissions of the packet, the user data is repeatedly transmitted to the receiver UE, and the sender UE can repeatedly transmit the user data in the case that the receiver UE does not have feedback during the direct communication process, and the receiver UE can repeatedly receive the user data
- the combined processing of the received duplicate data improves the reliability of data transmission.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sender UE is new data.
- the scheduling signaling further includes an indication that the data packet is new data
- scheduling signaling Does not include an indication that the packet is new.
- the scheduling signaling further includes identifier information of the sender UE, and the identifier information is used to indicate a priority of the source UE using the frequency domain resource.
- the identifier information of the UE may be a global identifier in a large area, or an intra-group identifier allocated by the group header.
- the identifier information of the UE has a meaning indicating a priority, and if another UE also uses the same resource. After it finds that there is a conflict, the UE with small identification information of the UE may preferentially use the resource.
- the scheduling signaling further includes a service type of user data to be transmitted by the sender UE.
- processing module 12 is further configured to:
- the scheduling signaling is generated; or, before the sending module 11 sends the scheduling signaling to the receiving UE, the scheduling signal sent by the receiving base station, specifically, in the sending UE
- the scheduling signaling sent by the sending module 11 to the receiving UE may be generated by the sending UE or may be received by the transmitting UE from the base station.
- the sending user equipment provided by the sending unit sends the scheduling signaling to the receiving UE by using the sending module 11 of the sending UE.
- the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information.
- the processing module 12 sends the user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling, and the sender UE can repeat in the case that the receiver UE does not have feedback during the direct communication process. Transmitting user data, the receiving UE can repeatedly receive user data, and combine and process the received duplicate data, thereby improving the reliability of data transmission.
- FIG. 5 is a schematic structural diagram of Embodiment 2 of a sender user equipment according to the present invention.
- the sender user equipment of this embodiment includes: a transmitter 21, a receiver 22, a memory 23, and a transmitter 21, respectively.
- the receiver 22 is connected to the processor 24 and the memory 24.
- the user equipment may also include an antenna, a baseband processing component, a medium RF processing component, an input and output device, and the like.
- the components of the present invention are not limited herein.
- the transmitter 21 is configured to send, to the receiver UE, scheduling signaling, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information.
- the processor 24 is configured to use, according to the scheduling signaling, User data is transmitted to the receiving UE to enable the receiving UE to receive user data according to the scheduling signaling.
- the scheduling signaling further includes the number of repeated transmissions of the data packet
- the processor 24 is specifically used to:
- the scheduling signaling in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, and the number of repeated transmissions of the data packet, to the receiver UE Send user data repeatedly.
- processor 24 is further configured to:
- the HARQ processing process acquires the first PDU in the medium access control packet data unit MAC PDU buffer, and records the number of transmissions as 0; if the HARQ processing process determines according to the identifier and transmission pattern of the HARQ processing process When the transmission subframe of the first PDU arrives, the first PDU is sent to the receiver UE through the transmission subframe of the first PDU, and the number of transmissions is increased by one until the number of transmissions reaches the number of repeated transmissions of the data packet.
- the processor 24 stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the packet.
- processor 24 is further configured to:
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sender UE is new data.
- the scheduling signaling further includes identifier information of the sender UE, where the identifier information is used to indicate a priority of the frequency domain resource used by the sender UE.
- the scheduling signaling further includes a service type of user data to be transmitted by the sender UE.
- processor 24 is further configured to:
- the scheduling signaling is generated before the transmitter 21 sends the scheduling signaling to the receiving UE; or, before the transmitter 21 sends the scheduling signaling to the receiving UE, the scheduling signaling sent by the base station is received.
- the sender UE in this embodiment is an entity embodiment corresponding to the embodiment shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 6 is a schematic structural diagram of Embodiment 1 of a receiver user equipment according to the present invention.
- the receiver user equipment of this embodiment includes: a receiving module 31 and a processing module 32, where the receiving module 31 is configured to receive The scheduling signaling sent by the sending UE, the scheduling signaling includes at least one of the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information.
- the processing module 32 is configured to receive according to the scheduling signaling received by the receiving module 31. User data sent by the sender UE.
- the repeated transmission of the user data is determined by the sender UE, and does not depend on whether the receiver UE feedbacks, and the sender UE may be implemented in the case that the receiver UE has no feedback during the direct communication process.
- the user data can be repeatedly transmitted, and the receiving UE can repeatedly receive the user data, and combine and process the received duplicate data, thereby improving the reliability of data transmission.
- the receiving user equipment provided by the embodiment receives the scheduling signaling sent by the sending UE by using the receiving module 31, and the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information, and the processing module
- the receiving may be implemented, in the case that the receiving UE does not have feedback in the direct communication process, the transmitting UE may repeatedly transmit the user data, and the receiving UE may The user data is repeatedly received, and the received duplicate data is combined to improve the reliability of data transmission.
- the scheduling signaling further includes the number of repeated transmissions of the data packet
- the processing module 32 is specifically configured to:
- the scheduling signaling received by the receiving module 31 in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, and the repeated transmission according to the data packet. The number of times, repeatedly receiving user data that the sender UE repeatedly transmits.
- the processing module 32 performs the data packet receiving according to the frequency domain location and the transmission pattern included in the scheduling signaling received by the receiving module 31, because the transmitting UE performs multiple repetitions.
- the receiving UE needs to send the repeatedly transmitted data to the soft bit buffer for demodulation after being demodulated by the physical layer. If the Cyclic Redundancy Check (CRC) check is correct after the combination, the uplink is upward. Submit, if the CRC check error after the merge, continue to wait for the next repeated data packet until the number of repetitions reaches the number of repetitions specified by the scheduling signaling, after the upward submission or after the maximum number of repetitions or after receiving new data, this soft The bit buffer will be cleared.
- CRC Cyclic Redundancy Check
- processing module 32 is further configured to:
- the receiver UE is still illustrated by using the schematic diagram of the UE shown in FIG. 3, and the sender UE sends the MAC address corresponding to the RLC3 service in the System Frame Number (SFN) x subframe 1.
- PDU1 subframe 2 sends the MAC PDU2 corresponding to the RLC5 service. Because it is repeated 5 times, the subframe 1 repeats the transmission of the MAC PDU1 when the SFNx+1 arrives, and the subframe 2 repeats the transmission of the MAC PDU2. Times.
- the receiving UE sends the data received by the subframe 1 of the SFNx to the HARQ processing process 1 for processing according to the transmission pattern information, and sends the data received by the subframe 2 of the SFNx to the HARQ processing process 2 for processing.
- the data received by the UE in subframe 1 of SFNx+1 is still sent to the HARQ processing process 1 for processing, and the data of the subframe 2 is sent to the HARQ processing process 2 for processing.
- the data received multiple times has been demodulated into soft bits at the physical layer, and these soft bits are combined. After the combination, if the CRC check is correct, the soft bit buffer in the HARQ process is cleared.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sending UE is new data;
- the processing module 32 is also used to:
- the new transmission sent by the transmitting UE according to the transmission pattern indicated by the transmission pattern information in the transmission subframe indicated by the number of cycles that can be occupied and the frequency domain position indicated by the frequency domain resource information.
- the scheduling signaling further includes a service type of the user data to be sent by the sender UE;
- the processing module 32 is also used to: Establishing a radio link control RLC entity corresponding to the service type according to the service type;
- the parameters of the RLC entity are configured according to a configuration table corresponding to the service type in the configuration table pre-stored in the receiving UE.
- the RLC layer of the receiving UE establishes an RLC entity according to the service type field in the received scheduling information, and configures parameters of the RLC entity according to the service type in the configuration table.
- the configuration table is stored in a hardware device such as a SIM card or a device such as a communication chip of the UE, or may be stored in a memory or a random access memory (RAM), a flash memory (flash).
- RLC entity configuration parameters include reordering time length and reordered packet sequence window size
- the receiving and receiving parties provide the equipment for the user equipment, and the receiving and receiving module module 3311 receives the dispatching degree of the sending and receiving of the transmitting and sending party UUEE.
- the signaling signaling order includes: a frequency-frequency domain resource source information information, a quantity of a weekly cycle period for cocoa occupation, and a message information of a transmission and transmission map.
- the processing module module 3322 is configured to receive and send the data of the user number sent by the sending and receiving party UUEE according to the dispatching degree signaling signaling order, which can be implemented directly and directly
- the transmitting and sending party UUEE can transmit and use the 1155 household number data by repeating the repeated transmission and transmission.
- the receiving and receiving party UUEE may receive the received user data data in a repeated manner, and perform the processing and processing of the repeated repeated data data received by the docking reception. , improve The number of data transfer reportedly may lose reliability against sexual. .
- Figure 77 is a schematic diagram showing the structure of the structure of the embodiment of the user equipment provided by the receiving and receiving party for the present invention, as shown in Figure 77.
- the user equipment of the transmitting and transmitting party of the embodiment of the present invention includes: a transmitter transmitter 4411, a receiver receiver 4422, and a storage reservoir 4433.
- the processor 4444 is connected to and connected to the transmitter transmitter 4411, the receiver receiver 4422, and the memory reservoir 4433, respectively.
- the user can set up 2200 to prepare the package, including the antenna antenna line, the base belt, the processing part, the medium and medium radio frequency processing part, and the transmission.
- the input and output, the output device, and the like, and the components of the general-purpose component are used, and the present invention is not limited to any limitation. .
- the receiving and receiving device 4422 is configured to send and receive the dispatching and dispatching signal signaling command sent and sent by the transmitting and sending UUEE, and the dispatching degree signaling signaling packet includes the frequency and frequency domain.
- the resource source information information the amount of the weekly cycle period of the cocoa occupation, and at least one of the information of the transmission and transmission map information information;; the processing processor 4444 is used
- the root receives and receives the received scheduling signal signaling command according to the received receiver, and then receives and transmits the user data of the user sent and sent by the transmitting and sending UUEE. .
- the scheduling degree signaling device further includes a number of times of repeating and repeating transmission transmission times of the data packet;
- Processing processor 4444 has specific application for::
- the root receives and receives the received scheduling signal signaling command according to the receiving receiver 4422, and indicates the transmitted transmission sub-subframe in the amount of the weekly period period in the cocoa occupation period.
- Intra-frame, intra-frequency, and frequency-domain resources, resource information information refers to the indicated frequency domain location, and the transmission and transmission pattern is indicated according to the information transmission and transmission information. For example, according to the number of times of repeating and repeating transmission and transmission in accordance with the illogical data packet, the repeating multiplex receiving, transmitting and receiving, sending and sending, and sending, by the UUEE, repeat the retransmission of the user data. .
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sending UE is new data;
- the processor 44 is also used to:
- the new transmission sent by the transmitting UE according to the transmission pattern indicated by the transmission pattern information in the transmission subframe indicated by the number of cycles that can be occupied and the frequency domain position indicated by the frequency domain resource information.
- the scheduling signaling further includes a service type of the user data to be sent by the sender UE;
- the processor 44 is also used to:
- the receiver UE in this embodiment is an entity embodiment corresponding to the embodiment shown in FIG. 6.
- the implementation principle and technical effects are similar, and details are not described herein again.
- FIG. 8 is a flowchart of Embodiment 1 of a data transmission method in direct communication according to the present invention. As shown in FIG. 8, the data transmission method in direct communication in this embodiment includes:
- the sender UE sends scheduling signaling to the receiver UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information.
- the frequency domain resource information in the scheduling information of the embodiment may include a frequency domain resource index or a maximum range of the frequency domain resource. If only one user sends data at the same sending time, the frequency domain resource information may be a frequency domain resource. The maximum range; if there are multiple users transmitting data at the same transmission time, the frequency domain resource information is a frequency domain resource index, and the number of cycles that can be occupied is used to indicate the number of cycles that the user data sent by the sender UE can occupy.
- the scheduling signaling in this embodiment may include at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information, and the information includes only one type of information or two types of information. In the case, the remaining two or one kind of information is fixed.
- the transmission pattern information and the number of cycles that can be occupied are fixed.
- the scheduling signaling in this embodiment only the number of cycles that can be occupied is included.
- the frequency domain resource information and the transmission pattern information are fixed, and may specify that the frequency domain location occupied by the scheduling signaling has a fixed correspondence with the frequency domain location occupied by the user data, for example, if the scheduling signaling is in the third of every two PRBs. If the symbol is sent, the data information is sent on the symbols other than the third symbol and the pilot symbol in the two PRBs.
- the frequency domain resource information is included in the scheduling signaling. And the number of cycles that can be occupied is fixed.
- the sender UE sends user data to the receiver UE according to the scheduling signaling, so that the receiver UE receives the user data according to the scheduling signaling.
- the sender UE occupies the location of the frequency domain resource indicated by the frequency domain resource information according to the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information in the scheduling signaling, and the transmission indicated by the number of cycles that can be occupied.
- the receiving UE receives the transmitting UE according to the transmission pattern indicated by the transmission pattern information in the transmission subframe indicated by the number of cycles that can be occupied and the frequency domain position indicated by the frequency domain resource information.
- the repeated transmission of the user data is determined by the sender UE, and does not depend on whether the receiver UE feedbacks, and the receiver UE may have no feedback in the direct communication process.
- the sender UE can repeatedly transmit user data, and the receiver UE can repeatedly receive user data, and combines the received duplicate data to improve the reliability of data transmission.
- the sending UE sends the scheduling signaling to the receiving UE, where the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the sending UE is configured according to the scheduling.
- the signaling, the user data is sent to the receiver UE, so that the receiver UE receives the user data according to the scheduling signaling, and the sender UE can repeatedly transmit the user data and receive in the case that the receiver UE does not have feedback during the direct communication process.
- the UE can repeatedly receive user data and combine the received duplicate data to improve the reliability of data transmission.
- the scheduling signaling further includes the number of repeated transmissions of the data packet
- S102 can include:
- the transmitting UE according to the scheduling signaling, in the transmission subframe indicated by the number of cycles that can be occupied, in the frequency domain position indicated by the frequency domain resource information, according to the transmission pattern indicated by the transmission pattern information,
- the user data is repeatedly transmitted to the receiving UE according to the number of repeated transmissions of the packet.
- the sending UE in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, and the data packet. Repeated transmission times, repeatedly sending user data to the receiving UE, including:
- the HARQ processing process of the sender UE acquires the first PDU in the MAC PDU buffer, and records the number of transmissions as 0;
- the HARQ processing process of the sender UE determines that the transmission subframe of the first PDU arrives according to the identifier and the transmission pattern of the HARQ processing process
- the first PDU is sent to the receiver UE by using the transmission subframe of the first PDU, and the number of transmissions is increased. First, until the number of transmissions reaches the number of repeated transmissions of the packet.
- the PDU buffer area and the HARQ processing process area and the sender UE in the MAC module refer to the schematic diagram and related description of the UE shown in FIG. 3.
- the sender UE stops using the first HARQ process after the number of transmissions reaches the number of repeated transmissions of the packet.
- the processing after the transmission pattern of the sender UE is changed is described.
- the transmission resource of the UE A is used by the UE B.
- the transmission resources of UE A will be less. For example, there are 2 subframes in each frame to transmit the data of UE A. Only one subframe can transmit the data of UE A, so that a HARQ processing process cache is generated. If the number of repetitions of the data has not been completed, the transmission cannot be performed again. This is because the HARQ process is associated with the transmitted subframe number.
- UE A can be in the HARQ process buffer. The data continues to be retransmitted. After the remaining number of times is completed, the process is no longer used. After the UE B obtains the information that can use the resource, it waits for a repetition of the X repetition interval and starts using the resource.
- the data transmission method in direct communication is performed by the sender UE to the receiver
- the UE sends scheduling signaling, where the scheduling signaling includes frequency domain resource information, the number of cycles that can be occupied, the transmission pattern information, and the number of repeated transmissions of the data packet.
- the transmitting UE indicates the transmission component in the number of cycles that can be occupied according to the scheduling signaling.
- the receiver UE can be realized in the direct communication process.
- the transmitting UE can repeatedly transmit user data, and the receiving UE can repeatedly receive user data, and combine and process the received duplicate data, thereby improving the reliability of data transmission.
- the sending UE in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, the transmission pattern indicated by the transmission pattern information, and the data packet. Repeated transmission times, repeatedly sending user data to the receiving UE, including:
- the MAC PDU buffer of the sender UE sends a second PDU to the HARQ processing process of the sender UE, and records the number of transmissions to 1, so that the HARQ processing process transmits the second PDU when determining that the transmission subframe of the first PDU arrives.
- the subframe transmits the second PDU to the receiver UE;
- the second PDU is sent to the HARQ processing process again until the number of transmissions reaches the number of repeated transmissions of the data packet, and the second PDU includes the identifier of the HARQ processing process.
- the HARQ processing process fetches data from the MAC PDU each time it is sent.
- the MAC PDU buffer will give the HARQ processing process appropriate data according to the sending status and the repeating status of a PDU. For example: If the sender UE obtains the transmission capability of 2 consecutive subframes in one frame, the first subframe transmits MAC PDU1, and the second subframe must transmit MAC PDU2, and cannot continue to send MAC PDU1 because of the scheduling signal.
- the MAC PDU buffer will give the HARQ processing process a duplicate data packet, and the first transmission and the subsequent repeated transmission may occur.
- the sender UE notifies the receiver of the process number used by the receiver in the data packet, so that the receiver UE can combine the received duplicate data
- the receiver After receiving a new data packet, the UE demodulates the data packet into a soft bit and sends it to the HARQ processing process cache corresponding to the data packet.
- the UE also carries the process number carried according to the data packet. , will send soft bits Consolidate into the corresponding HARQ process process cache.
- the UE sends scheduling signaling, where the scheduling signaling includes frequency domain resource information, the number of cycles that can be occupied, the transmission pattern information, and the number of repeated transmissions of the data packet.
- the transmitting UE indicates the transmission component in the number of cycles that can be occupied according to the scheduling signaling.
- the receiver UE can be realized in the direct communication process.
- the transmitting UE can repeatedly transmit user data, and the receiving UE can repeatedly receive user data, and combine and process the received duplicate data, thereby improving the reliability of data transmission.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sender UE is new data.
- the scheduling signaling further includes an indication that the data packet is new data
- scheduling signaling Does not include an indication that the packet is new.
- the scheduling signaling further includes identifier information of the sender UE, and the identifier information is used to indicate a priority of the source UE using the frequency domain resource.
- the identifier information of the UE may be a global identifier in a large area, or an intra-group identifier allocated by the group header.
- the identifier information of the UE has a meaning indicating a priority, and if another UE also uses the same resource. After it finds that there is a conflict, the UE with small identification information of the UE may preferentially use the resource.
- the scheduling signaling further includes a service type of user data to be transmitted by the sender UE.
- the method before the sending UE sends the scheduling signaling to the receiving UE, the method further includes: the sending UE generating the scheduling signaling; or
- the sender UE receives the scheduling signaling sent by the base station.
- the scheduling signaling sent by the sender UE to the receiver UE may be generated by the sender UE, or may be received by the sender UE from the base station.
- the sending UE sends the scheduling signaling to the receiving UE, where the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the sending UE is configured according to the scheduling.
- Signaling, sending user data to the receiver UE to enable the receiver The UE receives the user data according to the scheduling signaling, and in the case that the receiver UE does not have feedback during the direct communication process, the sender UE may repeatedly transmit the user data, and the receiver UE may repeatedly receive the user data, and the received duplicate data. Consolidation processing improves the reliability of data transmission.
- the first embodiment of the data transmission method in the above direct communication may be performed by the sender UE of FIG. 1 or 5.
- FIG. 9 is a flowchart of Embodiment 2 of the data transmission method in the direct communication provided by the present invention. As shown in FIG. 9, the data transmission method in the direct communication of this embodiment includes:
- the receiving UE receives scheduling signaling sent by the sending UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information.
- the receiving UE receives user data sent by the sending UE according to the scheduling signaling.
- the repeated transmission of the user data is determined by the sender UE, and does not depend on whether the receiver UE feedbacks, and the receiver UE may have no feedback in the direct communication process.
- the sender UE can repeatedly transmit user data, and the receiver UE can repeatedly receive user data, and combines the received duplicate data to improve the reliability of data transmission.
- the receiving UE receives the scheduling signaling sent by the sending UE, and the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the receiver UE Scheduling signaling, receiving user data sent by the sender UE, may be implemented, in the case that the receiver UE has no feedback in the direct communication process, the sender UE may repeatedly transmit user data, and the receiver UE may repeatedly receive user data, and receive the data. The repeated data is merged to improve the reliability of data transmission.
- the scheduling signaling further includes the number of repeated transmissions of the data packet
- S502 can include:
- the receiving UE repeats according to the scheduling signaling, in the transmission subframe indicated by the number of cycles that can be occupied, in the frequency domain position indicated by the frequency domain resource information, according to the transmission pattern indicated by the transmission pattern information, and according to the repeated transmission times of the data packet. Receiving user data that the sender UE repeatedly transmits.
- the receiver UE performs data packet reception according to the frequency domain location and the transmission pattern included in the previously received scheduling signaling, because the sender UE needs to perform multiple repeated transmissions, and the receiver UE needs to repeatedly send the data.
- the physical layer is demodulated, it is sent to the soft bit buffer for merge processing. If the CRC check is correct after the merge, it is submitted upwards, if the CRC is verified after the merge. In error, continue to wait for the next repeated data packet until the number of repetitions reaches the number of repetitions specified by the scheduling signaling, after the upward delivery or after the maximum number of repetitions or after receiving new data, the soft bit buffer is cleared.
- the receiving UE according to the scheduling signaling, in the transmission subframe indicated by the number of cycles that can be occupied, the frequency domain location indicated by the frequency domain resource information, and the transmission pattern indicated by the transmission pattern information, according to the data packet.
- the number of repeated transmissions, receiving user data repeatedly sent by the sender UE including:
- the receiving UE sends the first user data in the first subframe in the first frame to the second automatic retransmission request HARQ processing process corresponding to the first subframe according to the transmission pattern information, and the second frame in the second frame
- the second user data in the two subframes is sent to a third HARQ process corresponding to the second subframe.
- the receiver UE is still illustrated by using the schematic diagram of the UE shown in FIG. 3, the sender UE sends the MAC PDU1 corresponding to the RLC3 service in the SFNx subframe 1, and the subframe 2 sends the corresponding RLC5 service.
- MAC PDU2 because it is repeated 5 times, when SFNx+1 arrives later, subframe 1 repeatedly transmits MAC PDU1, and subframe 2 repeats transmission of MAC PDU2, which is transmitted four times.
- the receiver UE sends the data received by the subframe 1 of the SFNx to the HARQ processing process 1 for processing according to the transmission pattern information, and sends the data received by the subframe 2 of the SFNx to the HARQ processing process 2 for processing, and the receiver
- the data received by the UE in subframe 1 of SFNx+1 is still sent to the HARQ processing process 1 for processing, and the data of the subframe 2 is sent to the HARQ processing process 2 for processing.
- the data received multiple times has been demodulated into soft bits at the physical layer, and these soft bits are combined. After the combination, if the CRC is correct, the soft bit buffer in the HARQ process is cleared.
- the scheduling signaling further includes an indication that the data packet is new data, and the indication that the data packet is new data is used to indicate that the user data to be sent by the sending UE is new data;
- the receiving UE receives and processes the user data sent by the sending UE according to the scheduling signaling, and includes: the receiving UE, according to the scheduling signaling, in the frequency subframe indicated by the frequency domain resource information in the transmission subframe indicated by the number of cycles that can be occupied.
- the new user data sent by the sender UE is received in the location according to the transmission pattern indicated by the transmission pattern information.
- the scheduling signaling further includes a service type of the user data to be sent by the sender UE;
- the method of this embodiment further includes: The receiving UE establishes a radio link control RLC entity corresponding to the service type according to the service type;
- the receiving UE configures the parameters of the RLC entity according to a configuration table corresponding to the service type in the configuration table previously stored in the receiving UE.
- the RLC layer of the receiving UE establishes an RLC entity according to the service type field in the received scheduling information, and configures parameters of the RLC entity according to the service type in the configuration table.
- the configuration table is stored in a hardware device of the UE, such as a SIM card or other device, such as a communication chip, or may be stored in a memory or RAM, flash, and the RLC entity configuration parameters include the length of the reordering timer and Reordered package sequence window size.
- the receiving UE receives the scheduling signaling sent by the sending UE, and the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the receiver UE Scheduling signaling, receiving user data sent by the sender UE, may be implemented, in the case that the receiver UE has no feedback in the direct communication process, the sender UE may repeatedly transmit user data, and the receiver UE may repeatedly receive user data, and receive the data. The repeated data is merged to improve the reliability of data transmission.
- the second embodiment of the data transmission method in the above direct communication may be performed by the sender UE of FIG. 6 or FIG. 7.
- the following takes the interaction process between the sender UE and the receiver UE as an example to describe the data transmission method in the direct communication provided by the present invention.
- FIG. 10 is a flowchart of Embodiment 3 of the data transmission method in the direct communication provided by the present invention. As shown in FIG. 10, the data transmission method in the direct communication of this embodiment includes:
- the sender UE sends scheduling signaling to the receiver UE, where the scheduling signaling includes at least one of frequency domain resource information, a number of cycles that can be occupied, and transmission pattern information.
- the sender UE sends user data to the receiver UE according to the scheduling signaling.
- the receiver UE receives the user data sent by the sender UE according to the scheduling signaling.
- the sending UE sends the scheduling signaling to the receiving UE, where the scheduling signaling includes the frequency domain resource information, the number of cycles that can be occupied, and the transmission pattern information, and the sending UE is configured according to the scheduling.
- the signaling is sent to the receiver UE, and the receiver UE receives the user data sent by the sender UE according to the scheduling signaling, so that the sender UE can repeatedly transmit in the case that the receiver UE has no feedback in the direct communication process.
- User data receiver The UE can repeatedly receive user data, and combines the received duplicate data to improve the reliability of data transmission.
- the disclosed apparatus and method may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
- the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
- the above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium.
- the software functional unit is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform the method of various embodiments of the present invention. Part of the steps.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .
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Abstract
本发明实施例提供一种直接通信中的数据传输设备及方法,该方法包括:发送方用户设备UE向接收方UE发送调度信令,调度信令包括频域资源信息、可占用的周期数量和传输图样信息;发送方UE根据调度信令,向接收方UE发送用户数据,以使接收方UE根据调度信令接收用户数据,本发明的技术方案,可以实现在直接通信过程中接收方UE没有反馈的情况下,发送方UE 可以重复传输用户数据,接收方UE可以重复接收用户数据,提高了数据传输的可靠性。
Description
直接通信中的数据传输设备及方法
技术领域
本发明实施例涉及通信技术, 尤其涉及一种直接通信中的数据传输设备 及方法。 背景技术
在无线通信覆盖比较完善的情况下, 运营商和政府都希望无线通信能够 处理一些公共安全事件, 安全事件发生后, 紧接指挥组和救援小组会在一定 地域内进行通信, 每个组成员都会持有一种特种的终端, 这种特种终端叫做 设备间通信 (Device to Device, 简称 D2D) 设备, 或者蜂窝终端直通设备, 即该终端能够和普通的无线终端一样和基站进行蜂窝通信, 同时也能够直接 和另外一个蜂窝直通终端进行通信, 由于地形的遮挡, 以及无线信号的时变 特性蜂窝覆盖实际上会出现空洞, 在公共安全的需求中要求蜂窝直通终端在 有网络覆盖下和无网络覆盖的时候都能够应用。 通常公共安全的人员是多个 人构成一个小组进行行动, 这叫做组或者簇。
现有长期演进 (Long Term Evolution, 简称 LTE) 中, 下行数据发送采 用了异步重传的混合自动重传请求 (Hybrid Automatic Repeat Request, 简称 HARQ) 方式, 上行数据采用了同步重传的方式。
然而,若在 D2D通信中使用 LTE的重传方式,由于发送方用户设备 (User Equipment, 简称 UE) 和接收方 UE之间没有反馈信道, 所以无法使用 LTE 的重传方式来保证数据传输的可靠性。 发明内容 本发明实施例提供一种直接通信中的数据传输设备及方法, 用于实现 D2D通信中数据的可靠传输。
本发明第一方面, 提供一种发送方用户设备, 包括:
发送模块, 用于向接收方用户设备 UE发送调度信令, 所述调度信令包 括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
处理模块, 用于根据所述调度信令, 向所述接收方 UE发送用户数据, 以使所述接收方 UE根据所述调度信令接收所述用户数据。
在第一方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述处理模块, 具体用于:
根据所述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述 频域资源信息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发送用户数据。
根据第一方面的第一种可能的实现方式, 在第一方面的第二种可能的实 现方式中, 所述处理模块, 还用于:
控制发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU,并记录发送次数为 0;若所述 HARQ 处理进程根据所述 HARQ处理进程的标识和所述传输图样确定所述第一 PDU 的传输子帧到达时, 通过所述第一 PDU的传输子帧向所述接收方 UE发送所 述第一 PDU, 并将所述发送次数加一, 直到所述发送次数达到所述数据包的 重复传输次数。
根据第一方面的第二种可能的实现方式, 在第一方面的第三种可能的实 现方式中,若第一 HARQ处理进程对应的资源被分配给另一发送方 UE使用, 则所述处理模块在所述发送次数达到所述数据包的重复传输次数之后, 停止 使用所述第一 HARQ处理进程。
根据第一方面的第一种可能的实现方式, 在第一方面的第四种可能的实 现方式中, 所述处理模块, 还用于:
控制发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU; 所述 MAC PDU缓存根据所述传输图样确定最小重 复间隔到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发 送次数达到所述数据包的重复传输次数,所述第二 PDU包括发送所述 HARQ 处理进程的标识。
根据第一方面, 在第一方面的第五种可能的实现方式中, 所述调度信令
还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据。
结合第一方面或第一方面的第一种至第五种可能的实现方式中任意一 种, 在第一方面的第六种可能的实现方式中, 所述调度信令还包括发送方 UE 的标识信息, 所述标识信息用于指示所述发送方 UE的使用频域资源的优先 级。
结合第一方面或第一方面的第一种至第六种可能的实现方式中任意一 种, 在第一方面的第七种可能的实现方式中, 所述调度信令还包括发送方 UE 待发送的用户数据的业务类型。
结合第一方面或第一方面的第一种至第七种可能的实现方式中任意一 种, 在第一方面的第八种可能的实现方式中, 所述处理模块, 还用于:
在所述发送模块向所述接收方 UE发送调度信令之前, 生成所述调度信 令; 或者,
在所述发送模块向所述接收方 UE发送调度信令之前, 接收基站发送的 调度信令。
本发明第二方面, 提供一种接收方用户设备, 包括:
接收模块, 用于接收发送方用户设备 UE发送的调度信令, 所述调度信 令包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种; 处理模块, 用于根据所述接收模块接收到的所述调度信令, 接收所述发 送方 UE发送的用户数据。
在第二方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述处理模块, 具体用于:
根据所述接收模块接收到的所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送 方 UE重复发送的所述用户数据。
根据第二方面的第一种可能的实现方式, 在第二方面的第二种可能的实 现方式中, 所述处理模块, 还用于:
根据所述传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至
与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第 二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
根据第二方面, 在第二方面的第三种可能的实现方式中, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据;
所述处理模块, 还用于:
根据所述接收模块接收到的所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样接收所述发送方 UE发送的新的用户数据。
结合第二方面或第二方面的第一种至第三种可能的实现方式中任意一 种, 在第二方面的第四种可能的实现方式中, 所述调度信令还包括所述发送 方 UE待发送用户数据的业务类型;
所述处理模块, 还用于:
根据所述业务类型,建立与所述业务类型对应的无线链路控制 RLC实体; 根据预先存储于接收方 UE 中的配置表格中与所述业务类型对应的配置 表格配置所述 RLC实体的参数。
本发明第三方面, 提供一种发送方用户设备, 包括发送器、 接收器、 存 储器以及分别与所述发送器、 所述接收器和所述存储器连接的处理器;
所述发送器, 用于向接收方用户设备 UE发送调度信令, 所述调度信令 包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述处理器, 用于根据所述调度信令, 向所述接收方 UE发送用户数据, 以使所述接收方 UE根据所述调度信令接收所述用户数据。
在第三方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述处理器, 具体用于:
根据所述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述 频域资源信息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发送用户数据。
根据第三方面的第一种可能的实现方式, 在第三方面的第二种可能的实 现方式中, 所述处理器, 还用于:
控制发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU,并记录发送次数为 0;若所述 HARQ 处理进程根据所述 HARQ处理进程的标识和所述传输图样确定所述第一 PDU 的传输子帧到达时, 通过所述第一 PDU的传输子帧向所述接收方 UE发送所 述第一 PDU, 并将所述发送次数加一, 直到所述发送次数达到所述数据包的 重复传输次数。
根据第三方面的第二种可能的实现方式, 在第三方面的第三种可能的实 现方式中,若第一 HARQ处理进程对应的资源被分配给另一发送方 UE使用, 则所述处理器在所述发送次数达到所述数据包的重复传输次数之后, 停止使 用所述第一 HARQ处理进程。
根据第三方面的第一种可能的实现方式, 在第三方面的第四种可能的实 现方式中, 所述处理器, 还用于:
控制发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU; 所述 MAC PDU缓存根据所述传输图样确定最小重 复间隔到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发 送次数达到所述数据包的重复传输次数,所述第二 PDU包括发送所述 HARQ 处理进程的标识。
根据第三方面, 在第三方面的第五种可能的实现方式中, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据。
结合第三方面或第三方面的第一种至第五种可能的实现方式中任意一 种, 在第三方面的第六种可能的实现方式中, 所述调度信令还包括发送方 UE 的标识信息, 所述标识信息用于指示所述发送方 UE的使用频域资源的优先 级。
结合第三方面或第三方面的第一种至第六种可能的实现方式中任意一 种, 在第三方面的第七种可能的实现方式中, 所述调度信令还包括发送方 UE 待发送的用户数据的业务类型。
结合第三方面或第三方面的第一种至第七种可能的实现方式中任意一
种, 在第三方面的第八种可能的实现方式中, 所述处理器, 还用于: 在所述发送器向所述接收方 UE发送调度信令之前, 生成所述调度信令; 或者,
在所述发送器向所述接收方 UE发送调度信令之前, 接收基站发送的调 度信令。
本发明第四方面, 提供一种接收方用户设备, 包括发送器、 接收器、 存 储器以及分别与所述发送器、 所述接收器和所述存储器连接的处理器;
所述接收器, 用于接收发送方用户设备 UE发送的调度信令, 所述调度 信令包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种; 所述处理器, 用于根据所述接收器接收到的所述调度信令, 接收所述发 送方 UE发送的用户数据。
在第四方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述处理器, 具体用于:
根据所述接收器接收到的所述调度信令, 在所述可占用的周期数量指示 的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信 息指示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送方 UE重复发送的所述用户数据。
根据第四方面的第一种可能的实现方式, 在第四方面的第二种可能的实 现方式中, 所述处理器, 还用于:
根据所述传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至 与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第 二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
根据第四方面, 在第四方面的第三种可能的实现方式中, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据;
所述处理器, 还用于:
根据所述接收器接收到的所述调度信令, 在所述可占用的周期数量指示 的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信 息指示的传输图样接收所述发送方 UE发送的新的用户数据。
结合第四方面或第四方面的第一种至第三种可能的实现方式中任意一 种, 在第四方面的第四种可能的实现方式中, 所述调度信令还包括所述发送 方 UE待发送用户数据的业务类型;
所述处理器, 还用于:
根据所述业务类型,建立与所述业务类型对应的无线链路控制 RLC实体; 根据预先存储于接收方 UE 中的配置表格中与所述业务类型对应的配置 表格配置所述 RLC实体的参数。
本发明第五方面, 提供一种直接通信中的数据传输方法, 包括: 发送方用户设备 UE向接收方 UE发送调度信令,所述调度信令包括频域 资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述发送方 UE根据所述调度信令, 向所述接收方 UE发送用户数据, 以 使所述接收方 UE根据所述调度信令接收所述用户数据。
在第五方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述发送方 UE根据所述调度信令, 向所述接收方 UE发送用户数据,包 括:
所述发送方 UE根据所述调度信令, 在所述可占用的周期数量指示的传 输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发 送用户数据。
根据第五方面的第一种可能的实现方式, 在第五方面的第二种可能的实 现方式中, 所述发送方 UE根据所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE 重复发送用户数据, 包括:
所述发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU, 并记录发送次数为 0;
所述发送方 UE的 HARQ处理进程若根据所述 HARQ处理进程的标识和 所述传输图样确定所述第一 PDU的传输子帧到达时, 通过所述第一 PDU的 传输子帧向所述接收方 UE发送所述第一 PDU, 并将所述发送次数加一, 直
到所述发送次数达到所述数据包的重复传输次数。
根据第五方面的第二种可能的实现方式, 在第五方面的第三种可能的实 现方式中,若第一 HARQ处理进程对应的资源被分配给另一发送方 UE使用, 则所述发送方 UE在所述发送次数达到所述数据包的重复传输次数之后, 停 止使用所述第一 HARQ处理进程。
根据第五方面的第一种可能的实现方式, 在第五方面的第四种可能的实 现方式中, 所述发送方 UE根据所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE 重复发送用户数据, 包括:
所述发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU;
所述发送方 UE的 MAC PDU缓存根据所述传输图样确定最小重复间隔 到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发送次数 达到所述数据包的重复传输次数, 所述第二 PDU包括发送所述 HARQ处理 进程的标识。
根据第五方面, 在第五方面的第五种可能的实现方式中, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据。
结合第五方面或第五方面的第一种至第五种可能的实现方式中任意一 种, 在第五方面的第六种可能的实现方式中, 所述调度信令还包括所述发送 方 UE的标识信息,所述标识信息用于指示所述发送方 UE的使用频域资源的 优先级。
结合第五方面或第五方面的第一种至第六种可能的实现方式中任意一 种, 在第五方面的第七种可能的实现方式中, 所述调度信令还包括所述发送 方 UE待发送的用户数据的业务类型。
结合第五方面或第五方面的第一种至第七种可能的实现方式中任意一 种, 在第五方面的第八种可能的实现方式中, 所述发送方用户设备 UE 向接
收方 UE发送调度信令之前, 还包括:
所述发送方 UE生成所述调度信令; 或者,
所述发送方 UE接收基站发送的调度信令。
本发明第六方面, 提供一种直接通信中的数据传输方法, 包括: 接收方用户设备 UE接收发送方 UE发送的调度信令,所述调度信令包括 频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述接收方 UE根据所述调度信令,接收所述发送方 UE发送的用户数据。 在第六方面的第一种可能的实现方式中, 所述调度信令还包括数据包的 重复传输次数;
所述接收方 UE根据所述调度信令,接收并处理所述发送方 UE发送的用 户数据, 包括:
所述接收方 UE根据所述调度信令, 在所述可占用的周期数量指示的传 输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送方 UE 重复发送的所述用户数据。
根据第六方面的第一种可能的实现方式, 在第六方面的第二种可能的实 现方式中, 所述接收方 UE根据所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样、按照所述数据包的重复传输次数,接收所述发送方 UE 重复发送的所述用户数据, 包括:
所述接收方 UE根据所述传输图样信息, 将第一帧中的第一子帧中的第 一用户数据送至与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
根据第六方面, 在第六方面的第三种可能的实现方式中, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据;
所述接收方 UE根据所述调度信令,接收并处理所述发送方 UE发送的用 户数据, 包括:
所述接收方 UE根据所述调度信令, 在所述可占用的周期数量指示的传
输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样接收所述发送方 UE发送的新的用户数据。
结合第六方面或第六方面的第一种至第三种可能的实现方式中任意一 种, 在第六方面的第四种可能的实现方式中, 所述调度信令还包括所述发送 方 UE待发送用户数据的业务类型;
所述方法, 还包括:
所述接收方 UE根据所述业务类型, 建立与所述业务类型对应的无线链 路控制 RLC实体;
所述接收方 UE根据预先存储于所述接收方 UE中的配置表格中与所述业 务类型对应的配置表格配置所述 RLC实体的参数。
本实施例提供的直接通信中的数据传输设备及方法, 通过发送模块向接 收方用户设备 UE发送调度信令, 所述调度信令包括频域资源信息、 可占用 的周期数量和传输图样信息中的至少一种, 处理模块根据所述调度信令, 向 所述接收方 UE发送用户数据,以使所述接收方 UE根据所述调度信令接收所 述用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下, 发 送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数据,并对接 收到的重复数据进行合并处理, 提高了数据传输的可靠性。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实 施例或现有技术描述中所需要使用的附图作一简单地介绍, 显而易见地, 下 面描述中的附图是本发明的一些实施例, 对于本领域普通技术人员来讲, 在 不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明提供的发送方用户设备实施例一的结构示意图;
图 2为调度信令中传输图样的示意图;
图 3为 UE的示意图;
图 4为传输子帧号和 HARQ进程标识的对应关系示意图;
图 5为本发明提供的发送方用户设备实施例二的结构示意图;
图 6为本发明提供的接收方用户设备实施例一的结构示意图;
图 7为本发明提供的接收方用户设备实施例二的结构示意图;
图 8为本发明提供的直接通信中的数据传输方法实施例一的流程图; 图 9为本发明提供的直接通信中的数据传输方法实施例二的流程图; 图 10为本发明提供的直接通信中的数据传输方法实施例三的流程图。 具体实施方式 为使本发明实施例的目的、 技术方案和优点更加清楚, 下面将结合本发 明实施例中的附图, 对本发明实施例中的技术方案进行清楚、 完整地描述, 显然, 所描述的实施例是本发明一部分实施例, 而不是全部的实施例。 基于 本发明中的实施例, 本领域普通技术人员在没有作出创造性劳动前提下所获 得的所有其他实施例, 都属于本发明保护的范围。
图 1为本发明提供的发送方用户设备实施例一的结构示意图, 如图 1所 示, 本实施例的发送方用户设备包括: 发送模块 11和处理模块 12, 其中, 发送模块 11用于向接收方 UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;处理模块 12用于根据调度 信令, 向接收方 UE发送用户数据, 以使接收方 UE根据调度信令接收用户数 据。
具体来说, 本实施例调度信息中的频域资源信息可以包括频域资源索引 或者频域资源的最大范围, 若在同一发送时刻只有一个用户发送数据, 则频 域资源信息可以是频域资源的最大范围; 若在同一发送时刻有多个用户发送 数据, 则频域资源信息为频域资源索引, 可占用的周期数量用于指示发送方 UE发送的用户数据可以占用的周期数量。
图 2为调度信令中传输图样的示意图, 传输图样信息可以包括在一个周 期内, 发送方 UE可以占用哪些时间以及数据包的重复方式, 如图 2所示, UE A在每个 8个毫秒中, 可以占用 1和 3毫秒进行发送, 数据包的重复方式 可以包括立即重复, gP, 1和 3毫秒的时间可以发送相同的数据包, 或者不 连续重复和重复的最小间隔, gp, 一个数据包发送之后, 必须等待一段时间 才能重复发送, 例如图 2中, 第一个 1毫秒发送了一个数据, 必须等待 8ms, 或者更长时间才能第二次发送这个数据包。
具体来说, 本实施例中的调度信令可以包括频域资源信息、 可占用的周 期数量和传输图样信息中的至少一种, 对于仅包括一种信息或两种信息的情
况, 其余的两种或一种信息固定。
举例来说, 对于本实施例的调度信令中只包含频域资源信息的场景, 传 输图样信息和可占用的周期数量固定; 对于本实施例的调度信令中只包含可 占用的周期数量的场景, 频域资源信息和传输图样信息固定, 可以规定调度 信令占用的频域位置和用户数据占用的频域位置具有固定的对应关系, 例如 若调度信令在每 2个物理资源块 (Physical Resource Block, 简称 PRB ) 的第 3个符号上发送, 则数据信息就在这 2个 PRB中除第 3个符号和导频符号以 外的符号上发送; 对于本实施例的调度信令中只包含传输图样信息的场景, 频域资源信息和可占用的周期数量固定。
发送方 UE的处理模块 12根据调度信令中的频域资源信息、 可占用的周 期数量和传输图样信息, 占用频域资源信息指示的频域资源的位置, 在可占 用的周期数量指示的传输时间子帧内发送待发送的用户数据, 接收方 UE在 可占用的周期数量指示的传输子帧内、 频域资源信息指示的频域位置上、 按 照传输图样信息指示的传输图样接收发送方 UE发送的用户数据。
本实施例提供的发送方用户设备, 用户数据的重复传输由发送方 UE 的 处理模块 12根据调度信令确定, 而不取决于接收方 UE是否反馈, 可以实现 在直接通信过程中接收方 UE没有反馈的情况下,发送方 UE可以重复传输用 户数据, 接收方 UE可以重复接收用户数据, 并对接收到的重复数据进行合 并处理, 提高了数据传输的可靠性。
本实施例提供的发送方用户设备, 通过发送模块 11向接收方 UE发送调 度信令, 调度信令包括频域资源信息、 可占用的周期数量和传输图样信息中 的至少一种, 处理模块 12根据调度信令, 向接收方 UE发送用户数据, 以使 接收方 UE根据调度信令接收用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下, 发送方 UE可以重复传输用户数据, 接收方 UE可以 重复接收用户数据, 并对接收到的重复数据进行合并处理, 提高了数据传输 的可靠性。
在一个实施例中, 调度信令还包括数据包的重复传输次数;
处理模块 12具体用于:
根据调度信令, 在可占用的周期数量指示的传输子帧内、 频域资源信息 指示的频域位置上、 按照传输图样信息指示的传输图样、 按照数据包的重复
传输次数, 向接收方 UE重复发送用户数据。
在一个实施例中, 处理模块 12还用于:
控制发送方 UE 的 HARQ 处理进程在媒体接入控制 (Medium Access Control, 简称 MAC)分组数据单元(Packet Data Unit, 简称 PDU)缓存中获 取第一 PDU,并记录发送次数为 0; 若 HARQ处理进程根据 HARQ处理进程 的标识和传输图样确定第一 PDU的传输子帧到达时, 通过第一 PDU的传输 子帧向接收方 UE发送第一 PDU, 并将发送次数加一, 直到发送次数达到数 据包的重复传输次数。
图 3为 UE的示意图,如图 3所示, UE内部有无线链路控制(Radio Link control,简称 RLC)模块和 MAC模块, MAC模块包括 PDU缓存区以及 HARQ 处理进程区, HARQ处理进程用于处理数据的发送 (包括初次发送和重复发 送) 、 数据的接收与合并校验, 将数据递交到 PDU缓存区的功能, HARQ处 理进程的个数是根据 UE 的处理能力定义的, 在蜂窝系统中, 通常认为有 8 个 HARQ处理进程, 在多入多出系统中, 可能会有 16个 HARQ处理进程。 D2D组用户可能会出现 D2D 的通信与蜂窝通信同时存在的情况也有可能会 单独出现任何一种通信, 为了 UE的实现方便和简单, HARQ处理进程可以 是蜂窝通信与 D2D通信联合使用的, 即只有蜂窝通信的时候, HARQ处理进 程全部被蜂窝占用, 只有 D2D通信的时候, HARQ进程全部被 D2D通信占 用, 二者都有的时候, 他们会分别占用一些 HARQ处理进程。
本实施例可以假设只有 D2D通信, HARQ处理进程可以全部被 D2D通 信占用。
当 UE作为发送方 UE时,例如根据调度信令中的信息确定可以在两个时 间子帧上可以发送数据,因此它决定为 2个业务即 RLC3代表一种业务, RLC5 代表另一种业务, 都用来传送数据。 因此 MAC PDU缓存中有两个业务的数 据包, 每个业务的数据包的重复传送次数可以相同, 也可以不同, 下面以重 复传送次数相同为例: RLC3代表语音业务, RLC5代表图片传输业务, 2者 的最大重复传输次数均为 4, 两种业务分别产生了多个数据包送到了 MAC PDU缓存区中, HARQ处理进程根据自己的发送情况在上一个数据包重复发 送 4次之后到 MAC PDU缓存中取一个新的 PDU, 并且记录发送次数为 0, 在 UE 的发送传输子帧到达时进行发送, 发送之后更改发送次数
Tx_NB=Tx_NB+l, 当发送次数已经到达允许的最大重复传输次数时, 即 Tx_NB=4时, 去向 MAC PDU缓存取新的数据, MAC PDU buffer中的 MAC PDU在 HARQ进程取走之后, 就删除被取走的 MAC PDU。
图 4为传输子帧号和 HARQ进程标识的对应关系示意图, 如图 4所示, 传输子帧号和 HARQ进程标识的换算关系为: (帧号 *10+子帧号) mod 8 =1 & 2, 通过这个公式可以计算下一个子帧是否是自己发送数据的子帧, 该计 算过程也可以提前更多时间进行, 数据的发送由物理层完成, 传输使用的 HARQ进程标识是根据调度信令中的传输图样计算得到的, 也就是说发送方 UE使用 1, 2号 HARQ处理进程处理 MAC PDU的发送, 接收方 UE将接收 到的数据解调之后送到 HARQ进程标识为 1或者 2的处理进程中进行处理。
在一个实施例中, 若第一 HARQ处理进程对应的资源被分配给另一发送 方 UE使用, 则处理模块 12在发送次数达到数据包的重复传输次数之后, 停 止使用第一 HARQ处理进程。
举例来说, 本实施例对发送方 UE的传输图样被更改之后的处理进行说 明, 在 D2D组中的 UE B有更高优先级的业务数据传输的时候, UE A的发 送资源会被 UE B抢夺, UE A的发送资源会变少, 例如每个帧内有 2个子帧 可以传输 UE A的数据变为只有一个子帧可以传输 UE A的数据,这样就会产 生有一个 HARQ处理进程缓存中的数据尚未完成发送的重复次数, 就不能再 进行发送的情况, 这是由于 HARQ处理进程是和发送的子帧号关联的, 为了 保证数据的可靠传输, UE A可以在该 HARQ处理进程缓存中的数据继续重 传剩下的次数完毕之后, 不再使用这个进程, UE B在得到可以使用这个资源 的信息之后, 它等待一个重复次数 X重复间隔的时间之后, 开始使用这个资 源。
本实施例提供的发送方用户设备, 通过发送方 UE的发送模块 11向接收 方 UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量、 传 输图样信息和数据包的重复传输次数, 发送方 UE的处理模块 12根据调度信 令, 在可占用的周期数量指示的传输子帧内、 频域资源信息指示的频域位置 上、 按照传输图样信息指示的传输图样、 按照数据包的重复传输次数, 向接 收方 UE重复发送用户数据,可以实现在直接通信过程中接收方 UE没有反馈 的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户
数据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可靠性。 在一个实施例中, 处理模块 12还用于:
控制发送方 UE的 MAC PDU缓存向发送方 UE的 HARQ处理进程发送 第二 PDU, 并记录发送次数为 1, 以使 HARQ处理进程在确定第一 PDU的 传输子帧到达时, 通过第二 PDU的传输子帧向接收方 UE发送第二 PDU; MAC PDU缓存根据传输图样确定最小重复间隔到达时, 再次向 HARQ处理 进程发送第二 PDU, 直到发送次数达到数据包的重复传输次数, 第二 PDU 包括发送 HARQ处理进程的标识。
具体来说, 发送端的 MAC PDU缓存会在 HARQ处理进程取数据之后, 继续保留这个 PDU, 更改计数器 Current_TX_NB=Cmrent_TX_NB+l。 HARQ 处理进程每次发送时从 MAC PDU取数据, MAC PDU缓存会根据一个 PDU 的发送状态以及重复状态来给 HARQ 处理进程合适的数据。 例如: 发送方 UE如果在一个帧中得到了 2个连续的子帧的发送能力,第一个子帧发送 MAC PDU1 , 第二个子帧必须发送 MAC PDU2, 而不能继续发送 MAC PDU1, 因 为调度信令要求每个包的重复发送间隔不为 0, 这样当满足重复发送间隔时, MAC PDU缓存就会给 HARQ处理进程一个重复的数据包, 这时有可能会出 现第一次发送和后续重复发送的数据包使用不同子帧号的情况, 在这种情况 下, 发送方 UE在数据包中要通知接收端自己使用的进程号, 以便接收方 UE 能够对接收到的重复数据进行合并, 接收方 UE接收到一个新的数据包之后, 将这个数据包解调为软比特之后送到这个数据包对应的 HARQ处理进程缓存 中, 当这个数据包的重复包到达之后, 也根据它携带的进程号, 将软比特送 到对应的 HARQ处理进程缓存中进行合并。
本实施例提供的发送方用户设备, 通过发送方 UE的发送模块 11向接收 方 UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量、 传 输图样信息和数据包的重复传输次数, 发送方 UE的处理模块 12根据调度信 令, 在可占用的周期数量指示的传输子帧内、 频域资源信息指示的频域位置 上、 按照传输图样信息指示的传输图样、 按照数据包的重复传输次数, 向接 收方 UE重复发送用户数据,可以实现在直接通信过程中接收方 UE没有反馈 的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户 数据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据。
具体来说, 若发送方 UE待发送的用户数据为新数据时, 调度信令还包 括数据包为新数据的指示, 若发送方 UE待发送的用户数据为重复发送的数 据时, 调度信令不包含数据包为新数据的指示。
在一个实施例中, 调度信令还包括发送方 UE的标识信息, 标识信息用 于指示发送方 UE的使用频域资源的优先级。
具体来说, UE的标识信息可以是在一大片区域内的全局标识, 也可以组 头分配的组内标识, UE的标识信息有表示优先级的含义, 如果另外一个 UE 也使用了相同的资源, 在它发现有冲突之后, UE的标识信息小的 UE可以优 先使用资源。
在一个实施例中, 调度信令还包括发送方 UE待发送的用户数据的业务 类型。
在一个实施例中, 处理模块 12还用于:
在发送模块 11向接收方 UE发送调度信令之前, 生成调度信令; 或者, 在发送模块 11向接收方 UE发送调度信令之前, 接收基站发送的调度信 具体来说, 发送方 UE中的发送模块 11发送给接收方 UE的调度信令可 以是发送方 UE生成的, 也可以是发送方 UE接收自基站的。
本实施例提供的发送方用户设备, 通过发送方 UE的发送模块 11向接收 方 UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量和传 输图样信息, 发送方 UE的处理模块 12根据调度信令, 向接收方 UE发送用 户数据, 以使接收方 UE根据调度信令接收用户数据, 可以实现在直接通信 过程中接收方 UE没有反馈的情况下,发送方 UE可以重复传输用户数据,接 收方 UE可以重复接收用户数据, 并对接收到的重复数据进行合并处理, 提 高了数据传输的可靠性。
图 5为本发明提供的发送方用户设备实施例二的结构示意图, 如图 5所 示, 本实施例的发送方用户设备包括: 发送器 21、 接收器 22、 存储器 23以 及分别与发送器 21、 接收器 22和存储器 23连接的处理器 24。 当然, 用户设 备还可以包括天线、 基带处理部件、 中射频处理部件、 输入输出装置等通用
部件, 本发明实施例在此不再任何限制。
其中, 发送器 21用于向接收方 UE发送调度信令, 调度信令包括频域资 源信息、可占用的周期数量和传输图样信息中的至少一种; 处理器 24用于根 据调度信令, 向接收方 UE发送用户数据, 以使接收方 UE根据调度信令接收 用户数据。
在一个实施例中, 调度信令还包括数据包的重复传输次数;
处理器 24具体用于:
根据调度信令, 在可占用的周期数量指示的传输子帧内、 频域资源信息 指示的频域位置上、 按照传输图样信息指示的传输图样、 按照数据包的重复 传输次数, 向接收方 UE重复发送用户数据。
在一个实施例中, 处理器 24还用于:
控制发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU, 并记录发送次数为 0; 若 HARQ处 理进程根据 HARQ处理进程的标识和传输图样确定第一 PDU的传输子帧到 达时,通过第一 PDU的传输子帧向接收方 UE发送第一 PDU, 并将发送次数 加一, 直到发送次数达到数据包的重复传输次数。
在一个实施例中, 若第一 HARQ处理进程对应的资源被分配给另一发送 方 UE使用, 则处理器 24在发送次数达到数据包的重复传输次数之后, 停止 使用第一 HARQ处理进程。
在一个实施例中, 处理器 24还用于:
控制发送方 UE的 MAC PDU缓存向发送方 UE的 HARQ处理进程发送 第二 PDU, 并记录发送次数为 1, 以使 HARQ处理进程在确定第一 PDU的 传输子帧到达时, 通过第二 PDU的传输子帧向接收方 UE发送第二 PDU; MAC PDU缓存根据传输图样确定最小重复间隔到达时, 再次向 HARQ处理 进程发送第二 PDU, 直到发送次数达到数据包的重复传输次数, 第二 PDU 包括发送 HARQ处理进程的标识。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据。
在一个实施例中, 调度信令还包括发送方 UE的标识信息, 标识信息用 于指示发送方 UE的使用频域资源的优先级。
在一个实施例中, 调度信令还包括发送方 UE待发送的用户数据的业务 类型。
在一个实施例中, 处理器 24还用于:
在发送器 21向接收方 UE发送调度信令之前, 生成调度信令; 或者, 在发送器 21向接收方 UE发送调度信令之前,接收基站发送的调度信令。 本实施例发送方 UE是与图 1所示实施例相对应的实体实施例, 其实现 原理和技术效果类似, 此处不再赘述。
图 6为本发明提供的接收方用户设备实施例一的结构示意图, 如图 6所 示, 本实施例的接收方用户设备包括: 接收模块 31和处理模块 32, 其中, 接收模块 31用于接收发送方 UE发送的调度信令, 调度信令包括频域资源信 息、可占用的周期数量和传输图样信息中的至少一种; 处理模块 32用于根据 接收模块 31接收到的调度信令, 接收发送方 UE发送的用户数据。
本实施例提供的接收方用户设备, 用户数据的重复传输由发送方 UE确 定, 而不取决于接收方 UE是否反馈, 可以实现在直接通信过程中接收方 UE 没有反馈的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复 接收用户数据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可 靠性。
本实施例提供的接收方用户设备, 通过接收模块 31接收发送方 UE发送 的调度信令, 调度信令包括频域资源信息、 可占用的周期数量和传输图样信 息中的至少一种, 处理模块 32根据接收模块 31接收到的调度信令, 接收发 送方 UE发送的用户数据,可以实现在直接通信过程中接收方 UE没有反馈的 情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数 据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 调度信令还包括数据包的重复传输次数;
处理模块 32具体用于:
根据接收模块 31接收到的调度信令,在可占用的周期数量指示的传输子 帧内、频域资源信息指示的频域位置上、按照传输图样信息指示的传输图样、 按照数据包的重复传输次数, 重复接收发送方 UE重复发送的用户数据。
具体来说, 处理模块 32根据接收模块 31接收到的调度信令中包含的频 域位置以及传输图样进行数据包的接收, 因为发送方 UE要进行多次重复发
送, 接收方 UE需要将重复发送的数据在物理层解调之后送到软比特缓存中 进行合并处理, 如果合并之后循环冗余校验码(Cyclic Redundancy Check, 简 称 CRC) 校验正确, 则向上递交, 如果合并之后 CRC校验错误, 继续等待 下一个重复的数据包, 直到重复次数到达调度信令规定的重复次数为止, 向 上递交或者到达最大重复次数之后或者接收到新的数据之后, 这个软比特缓 存都会清空。
在一个实施例中, 处理模块 32还用于:
根据传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至与第 一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第二子帧中 的第二用户数据送至与第二子帧对应的第三 HARQ处理进程。
举例来说,仍以图 3所示的 UE的示意图为例对接收方 UE进行说明,发 送方 UE在系统帧号 (System Frame Number, 简称 SFN) x子帧 1内发送了 RLC3 业务对应的 MAC PDU1,子帧 2发送了 RLC5业务对应的 MAC PDU2, 因为要重复 5次,所以在后面得到 SFNx+1到来的时候子帧 1重复发送 MAC PDU1 , 子帧 2重复发送 MAC PDU2, —直发送四次。接收方 UE根据传输图 样信息,将 SFNx的子帧 1接收到的数据送到 HARQ处理进程 1中进行处理, 将 SFNx的子帧 2接收到的数据送到 HARQ处理进程 2中进行处理, 接收方 UE在 SFNx+1的子帧 1收到的数据仍然是送到 HARQ处理进程 1中进行处 理, 子帧 2的数据送到 HARQ处理进程 2中进行处理。 多次接收的数据在物 理层已经被解调成为软比特, 将这些软比特进行合并, 合并之后如果 CRC校 验正确, 则 HARQ处理进程中的软比特缓存清空。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据;
处理模块 32还用于:
根据接收模块 31接收到的调度信令,在可占用的周期数量指示的传输子 帧内、 频域资源信息指示的频域位置上、 按照传输图样信息指示的传输图样 接收发送方 UE发送的新的用户数据。
在一个实施例中, 调度信令还包括发送方 UE待发送用户数据的业务类 型;
处理模块 32还用于:
根据业务类型, 建立与业务类型对应的无线链路控制 RLC实体;
根据预先存储于接收方 UE 中的配置表格中与业务类型对应的配置表格 配置 RLC实体的参数。
具体来说, 接收方 UE的 RLC层根据收到的调度信息中业务类型字段来 5 建立 RLC实体, 并且根据配置表格中的业务类型来配置 RLC实体的参数。
配置表格是 UE存储在自身的一个硬件设备比如 SIM卡中或者其他设备例如 通信的芯片中的, 也可能是存储在内存或者随机存取存储器(Random Access Memory, 简称 RAM) , 闪存 (flash) 中, RLC实体配置参数包括重排序定 (reordering time length ) 和重排序的包序号窗口尺寸
本本实实施施例例提提供供的的接接收收方方用用户户设设备备,, 通通过过接接收收模模块块 3311接接收收发发送送方方 UUEE发发送送 的的调调度度信信令令,, 调调度度信信令令包包括括频频域域资资源源信信息息、、 可可占占用用的的周周期期数数量量和和传传输输图图样样信信 息息,, 处处理理模模块块 3322根根据据调调度度信信令令,, 接接收收发发送送方方 UUEE发发送送的的用用户户数数据据,, 可可以以实实现现 在在直直接接通通信信过过程程中中接接收收方方 UUEE没没有有反反馈馈的的情情况况下下,,发发送送方方 UUEE可可以以重重复复传传输输用用 1155 户户数数据据,, 接接收收方方 UUEE可可以以重重复复接接收收用用户户数数据据,, 并并对对接接收收到到的的重重复复数数据据进进行行合合 并并处处理理,, 提提高高了了数数据据传传输输的的可可靠靠性性。。
图图 77为为本本发发明明提提供供的的接接收收方方用用户户设设备备实实施施例例二二的的结结构构示示意意图图,, 如如图图 77所所 示示,, 本本实实施施例例的的发发送送方方用用户户设设备备包包括括:: 发发送送器器 4411、、 接接收收器器 4422、、 存存储储器器 4433以以 及及分分别别与与发发送送器器 4411、、 接接收收器器 4422和和存存储储器器 4433连连接接的的处处理理器器 4444。。 当当然然,, 用用户户设设 2200 备备还还可可以以包包括括天天线线、、 基基带带处处理理部部件件、、 中中射射频频处处理理部部件件、、 输输入入输输出出装装置置等等通通用用 部部件件,, 本本发发明明实实施施例例在在此此不不再再任任何何限限制制。。
其其中中,, 接接收收器器 4422用用于于接接收收发发送送方方 UUEE发发送送的的调调度度信信令令,, 调调度度信信令令包包括括频频 域域资资源源信信息息、、可可占占用用的的周周期期数数量量和和传传输输图图样样信信息息中中的的至至少少一一种种;; 处处理理器器 4444用用 于于根根据据接接收收器器 4422接接收收到到的的调调度度信信令令,, 接接收收发发送送方方 UUEE发发送送的的用用户户数数据据。。
2255 在在一一个个实实施施例例中中,, 调调度度信信令令还还包包括括数数据据包包的的重重复复传传输输次次数数;;
处处理理器器 4444具具体体用用于于::
根根据据接接收收器器 4422接接收收到到的的调调度度信信令令,,在在可可占占用用的的周周期期数数量量指指示示的的传传输输子子帧帧 内内、、 频频域域资资源源信信息息指指示示的的频频域域位位置置上上、、 按按照照传传输输图图样样信信息息指指示示的的传传输输图图样样、、 按按照照数数据据包包的的重重复复传传输输次次数数,, 重重复复接接收收发发送送方方 UUEE重重复复发发送送的的用用户户数数据据。。
3300
根据传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至与第 一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第二子帧中 的第二用户数据送至与第二子帧对应的第三 HARQ处理进程。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据;
处理器 44还用于:
根据接收器 42接收到的调度信令,在可占用的周期数量指示的传输子帧 内、 频域资源信息指示的频域位置上、 按照传输图样信息指示的传输图样接 收发送方 UE发送的新的用户数据。
在一个实施例中, 调度信令还包括发送方 UE待发送用户数据的业务类 型;
处理器 44还用于:
根据业务类型, 建立与业务类型对应的无线链路控制 RLC实体; 根据预先存储于接收方 UE 中的配置表格中与业务类型对应的配置表格 配置 RLC实体的参数。
本实施例接收方 UE是与图 6所示实施例相对应的实体实施例, 其实现 原理和技术效果类似, 此处不再赘述。
图 8为本发明提供的直接通信中的数据传输方法实施例一的流程图, 如 图 8所示, 本实施例的直接通信中的数据传输方法包括:
S101、 发送方 UE向接收方 UE发送调度信令, 调度信令包括频域资源 信息、 可占用的周期数量和传输图样信息中的至少一种。
具体来说, 本实施例调度信息中的频域资源信息可以包括频域资源索引 或者频域资源的最大范围, 若在同一发送时刻只有一个用户发送数据, 则频 域资源信息可以是频域资源的最大范围; 若在同一发送时刻有多个用户发送 数据, 则频域资源信息为频域资源索引, 可占用的周期数量用于指示发送方 UE发送的用户数据可以占用的周期数量。
本实施例调度信令中传输图样可以参见如图 2所示的传输图样的示意图 及相关描述。
具体来说, 本实施例中的调度信令可以包括频域资源信息、 可占用的周 期数量和传输图样信息中的至少一种, 对于仅包括一种信息或两种信息的情
况, 其余的两种或一种信息固定。
举例来说, 对于本实施例的调度信令中只包含频域资源信息的场景, 传 输图样信息和可占用的周期数量固定; 对于本实施例的调度信令中只包含可 占用的周期数量的场景, 频域资源信息和传输图样信息固定, 可以规定调度 信令占用的频域位置和用户数据占用的频域位置具有固定的对应关系, 例如 若调度信令在每 2个 PRB的第 3个符号上发送,则数据信息就在这 2个 PRB 中除第 3个符号和导频符号以外的符号上发送; 对于本实施例的调度信令中 只包含传输图样信息的场景, 频域资源信息和可占用的周期数量固定。
S102、 发送方 UE根据调度信令, 向接收方 UE发送用户数据, 以使接 收方 UE根据调度信令接收用户数据。
具体来说, 发送方 UE根据调度信令中的频域资源信息、 可占用的周期 数量和传输图样信息, 占用频域资源信息指示的频域资源的位置, 在可占用 的周期数量指示的传输时间子帧内发送待发送的用户数据, 接收方 UE在可 占用的周期数量指示的传输子帧内、 频域资源信息指示的频域位置上、 按照 传输图样信息指示的传输图样接收发送方 UE发送的用户数据。
本实施例提供的直接通信中的数据传输方法中, 用户数据的重复传输由 发送方 UE确定,而不取决于接收方 UE是否反馈,可以实现在直接通信过程 中接收方 UE没有反馈的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数据, 并对接收到的重复数据进行合并处理, 提高了数 据传输的可靠性。
本实施例提供的直接通信中的数据传输方法, 通过发送方 UE 向接收方 UE发送调度信令, 调度信令包括频域资源信息、可占用的周期数量和传输图 样信息, 发送方 UE根据调度信令, 向接收方 UE发送用户数据, 以使接收方 UE根据调度信令接收用户数据,可以实现在直接通信过程中接收方 UE没有 反馈的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收 用户数据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 调度信令还包括数据包的重复传输次数;
S102可以包括:
发送方 UE根据调度信令, 在可占用的周期数量指示的传输子帧内、 频 域资源信息指示的频域位置上、 按照传输图样信息指示的传输图样、 按照数
据包的重复传输次数, 向接收方 UE重复发送用户数据。
在一个实施例中, 发送方 UE根据调度信令, 在可占用的周期数量指示 的传输子帧内、 频域资源信息指示的频域位置上、 按照传输图样信息指示的 传输图样、 按照数据包的重复传输次数, 向接收方 UE重复发送用户数据, 包括:
发送方 UE的 HARQ处理进程在 MAC PDU缓存中获取第一 PDU,并记 录发送次数为 0;
发送方 UE的 HARQ处理进程若根据 HARQ处理进程的标识和传输图样 确定第一 PDU的传输子帧到达时, 通过第一 PDU的传输子帧向接收方 UE 发送第一 PDU, 并将发送次数加一, 直到发送次数达到数据包的重复传输次 数。
本实施例 UE中的包括的 RLC模块和 MAC模块, MAC模块中包含的 PDU缓存区以及 HARQ处理进程区以及发送方 UE的处理过程可以参见图 3 所示的 UE的示意图及相关描述。
本实施例中传输子帧号和 HARQ进程标识的对应关系可以参见如图 4所 示的传输子帧号和 HARQ进程标识的对应关系示意图及相关描述。
进一步地, 若第一 HARQ处理进程对应的资源被分配给另一发送方 UE 使用, 则发送方 UE在发送次数达到数据包的重复传输次数之后, 停止使用 第一 HARQ处理进程。
举例来说, 本实施例对发送方 UE的传输图样被更改之后的处理进行说 明, 在 D2D组中的 UE B有更高优先级的业务数据传输的时候, UE A的发 送资源会被 UE B抢夺, UE A的发送资源会变少, 例如每个帧内有 2个子帧 可以传输 UE A的数据变为只有一个子帧可以传输 UE A的数据,这样就会产 生有一个 HARQ处理进程缓存中的数据尚未完成发送的重复次数, 就不能再 进行发送的情况, 这是由于 HARQ处理进程是和发送的子帧号关联的, 为了 保证数据的可靠传输, UE A可以在该 HARQ处理进程缓存中的数据继续重 传剩下的次数完毕之后, 不再使用这个进程, UE B在得到可以使用这个资源 的信息之后, 它等待一个重复次数 X重复间隔的时间之后, 开始使用这个资 源。
本实施例提供的直接通信中的数据传输方法, 通过发送方 UE 向接收方
UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量、传输图 样信息和数据包的重复传输次数, 发送方 UE根据调度信令, 在可占用的周 期数量指示的传输子帧内、 频域资源信息指示的频域位置上、 按照传输图样 信息指示的传输图样、 按照数据包的重复传输次数, 向接收方 UE重复发送 用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下, 发送 方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数据,并对接收 到的重复数据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 发送方 UE根据调度信令, 在可占用的周期数量指示 的传输子帧内、 频域资源信息指示的频域位置上、 按照传输图样信息指示的 传输图样、 按照数据包的重复传输次数, 向接收方 UE重复发送用户数据, 包括:
发送方 UE的 MAC PDU缓存向发送方 UE的 HARQ处理进程发送第二 PDU, 并记录发送次数为 1, 以使 HARQ处理进程在确定第一 PDU的传输子 帧到达时, 通过第二 PDU的传输子帧向接收方 UE发送第二 PDU;
发送方 UE的 MAC PDU缓存根据传输图样确定最小重复间隔到达时, 再次向 HARQ处理进程发送第二 PDU,直到发送次数达到数据包的重复传输 次数, 第二 PDU包括发送 HARQ处理进程的标识。
具体来说, 发送端的 MAC PDU缓存会在 HARQ处理进程取数据之后, 继续保留这个 PDU, 更改计数器 Current_TX_NB=Cmrent_TX_NB+l。 HARQ 处理进程每次发送时从 MAC PDU取数据, MAC PDU缓存会根据一个 PDU 的发送状态以及重复状态来给 HARQ 处理进程合适的数据。 例如: 发送方 UE如果在一个帧中得到了 2个连续的子帧的发送能力,第一个子帧发送 MAC PDU1 , 第二个子帧必须发送 MAC PDU2, 而不能继续发送 MAC PDU1, 因 为调度信令要求每个包的重复发送间隔不为 0, 这样当满足重复发送间隔时, MAC PDU缓存就会给 HARQ处理进程一个重复的数据包, 这时有可能会出 现第一次发送和后续重复发送的数据包使用不同子帧号的情况, 在这种情况 下, 发送方 UE在数据包中要通知接收端自己使用的进程号, 以便接收方 UE 能够对接收到的重复数据进行合并, 接收方 UE接收到一个新的数据包之后, 将这个数据包解调为软比特之后送到这个数据包对应的 HARQ处理进程缓存 中, 当这个数据包的重复包到达之后, 也根据它携带的进程号, 将软比特送
到对应的 HARQ处理进程缓存中进行合并。
本实施例提供的直接通信中的数据传输方法, 通过发送方 UE 向接收方
UE发送调度信令, 调度信令包括频域资源信息、 可占用的周期数量、传输图 样信息和数据包的重复传输次数, 发送方 UE根据调度信令, 在可占用的周 期数量指示的传输子帧内、 频域资源信息指示的频域位置上、 按照传输图样 信息指示的传输图样、 按照数据包的重复传输次数, 向接收方 UE重复发送 用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下, 发送 方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数据,并对接收 到的重复数据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据。
具体来说, 若发送方 UE待发送的用户数据为新数据时, 调度信令还包 括数据包为新数据的指示, 若发送方 UE待发送的用户数据为重复发送的数 据时, 调度信令不包含数据包为新数据的指示。
在一个实施例中, 调度信令还包括发送方 UE的标识信息, 标识信息用 于指示发送方 UE的使用频域资源的优先级。
具体来说, UE的标识信息可以是在一大片区域内的全局标识, 也可以组 头分配的组内标识, UE的标识信息有表示优先级的含义, 如果另外一个 UE 也使用了相同的资源, 在它发现有冲突之后, UE的标识信息小的 UE可以优 先使用资源。
在一个实施例中, 调度信令还包括发送方 UE待发送的用户数据的业务 类型。
在一个实施例中, 发送方 UE向接收方 UE发送调度信令之前, 还包括: 发送方 UE生成调度信令; 或者,
发送方 UE接收基站发送的调度信令。
具体来说,发送方 UE发送给接收方 UE的调度信令可以是发送方 UE生 成的, 也可以是发送方 UE接收自基站的。
本实施例提供的直接通信中的数据传输方法, 通过发送方 UE 向接收方 UE发送调度信令, 调度信令包括频域资源信息、可占用的周期数量和传输图 样信息, 发送方 UE根据调度信令, 向接收方 UE发送用户数据, 以使接收方
UE根据调度信令接收用户数据,可以实现在直接通信过程中接收方 UE没有 反馈的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收 用户数据, 并对接收到的重复数据进行合并处理, 提高了数据传输的可靠性。
上述直接通信中的数据传输方法实施例一可以由图 1或图 5的发送方 UE 执行。
图 9为本发明提供的直接通信中的数据传输方法实施例二的流程图, 如 图 9所示, 本实施例的直接通信中的数据传输方法包括:
S501、 接收方 UE接收发送方 UE发送的调度信令, 调度信令包括频域 资源信息、 可占用的周期数量和传输图样信息中的至少一种。
S502、 接收方 UE根据调度信令, 接收发送方 UE发送的用户数据。 本实施例提供的直接通信中的数据传输方法中, 用户数据的重复传输由 发送方 UE确定,而不取决于接收方 UE是否反馈,可以实现在直接通信过程 中接收方 UE没有反馈的情况下,发送方 UE可以重复传输用户数据,接收方 UE可以重复接收用户数据, 并对接收到的重复数据进行合并处理, 提高了数 据传输的可靠性。
本实施例提供的直接通信中的数据传输方法, 通过接收方 UE接收发送 方 UE发送的调度信令, 调度信令包括频域资源信息、 可占用的周期数量和 传输图样信息, 接收方 UE根据调度信令, 接收发送方 UE发送的用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下,发送方 UE可以重 复传输用户数据, 接收方 UE可以重复接收用户数据, 并对接收到的重复数 据进行合并处理, 提高了数据传输的可靠性。
在一个实施例中, 调度信令还包括数据包的重复传输次数;
S502可以包括:
接收方 UE根据调度信令, 在可占用的周期数量指示的传输子帧内、 频 域资源信息指示的频域位置上、 按照传输图样信息指示的传输图样、 按照数 据包的重复传输次数, 重复接收发送方 UE重复发送的用户数据。
具体来说, 接收方 UE根据之前接收到的调度信令中包含的频域位置以 及传输图样进行数据包的接收, 因为发送方 UE要进行多次重复发送, 接收 方 UE需要将重复发送的数据在物理层解调之后送到软比特缓存中进行合并 处理, 如果合并之后 CRC校验正确, 则向上递交, 如果合并之后 CRC校验
错误, 继续等待下一个重复的数据包, 直到重复次数到达调度信令规定的重 复次数为止, 向上递交或者到达最大重复次数之后或者接收到新的数据之后, 这个软比特缓存都会清空。
在一个实施例中, 接收方 UE根据调度信令, 在可占用的周期数量指示 的传输子帧内、 频域资源信息指示的频域位置上、 按照传输图样信息指示的 传输图样、 按照数据包的重复传输次数, 接收发送方 UE重复发送的用户数 据, 包括:
接收方 UE根据传输图样信息, 将第一帧中的第一子帧中的第一用户数 据送至与第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的 第二子帧中的第二用户数据送至与第二子帧对应的第三 HARQ处理进程。
举例来说,仍以图 3所示的 UE的示意图为例对接收方 UE进行说明,发 送方 UE在 SFNx子帧 1内发送了 RLC3业务对应的 MAC PDU1, 子帧 2发 送了 RLC5业务对应的 MAC PDU2,因为要重复 5次,所以在后面得到 SFNx+1 到来的时候子帧 1重复发送 MAC PDU1, 子帧 2重复发送 MAC PDU2, —直 发送四次。接收方 UE根据传输图样信息,将 SFNx的子帧 1接收到的数据送 到 HARQ处理进程 1中进行处理,将 SFNx的子帧 2接收到的数据送到 HARQ 处理进程 2中进行处理, 接收方 UE在 SFNx+1的子帧 1收到的数据仍然是 送到 HARQ处理进程 1中进行处理, 子帧 2的数据送到 HARQ处理进程 2 中进行处理。 多次接收的数据在物理层已经被解调成为软比特, 将这些软比 特进行合并, 合并之后如果 CRC校验正确, 则 HARQ处理进程中的软比特 缓存清空。
在一个实施例中, 调度信令还包括数据包为新数据的指示, 数据包为新 数据的指示用于指示发送方 UE待发送的用户数据为新数据;
接收方 UE根据调度信令,接收并处理发送方 UE发送的用户数据,包括: 接收方 UE根据调度信令, 在可占用的周期数量指示的传输子帧内、 频 域资源信息指示的频域位置上、 按照传输图样信息指示的传输图样接收发送 方 UE发送的新的用户数据。
在一个实施例中, 调度信令还包括发送方 UE待发送用户数据的业务类 型;
本实施例的方法, 还包括:
接收方 UE根据业务类型, 建立与业务类型对应的无线链路控制 RLC实 体;
接收方 UE根据预先存储于接收方 UE中的配置表格中与业务类型对应的 配置表格配置 RLC实体的参数。
具体来说, 接收方 UE的 RLC层根据收到的调度信息中业务类型字段来 建立 RLC实体, 并且根据配置表格中的业务类型来配置 RLC实体的参数。 配置表格是 UE存储在自身的一个硬件设备比如 SIM卡中或者其他设备例如 通信的芯片中的, 也可能是存储在内存或者 RAM, flash中, RLC实体配置 参数包括重排序定时器的时间长度和重排序的包序号窗口尺寸。
本实施例提供的直接通信中的数据传输方法, 通过接收方 UE接收发送 方 UE发送的调度信令, 调度信令包括频域资源信息、 可占用的周期数量和 传输图样信息, 接收方 UE根据调度信令, 接收发送方 UE发送的用户数据, 可以实现在直接通信过程中接收方 UE没有反馈的情况下,发送方 UE可以重 复传输用户数据, 接收方 UE可以重复接收用户数据, 并对接收到的重复数 据进行合并处理, 提高了数据传输的可靠性。
上述直接通信中的数据传输方法实施例二可以由图 6或图 7的发送方 UE 执行。
以下以发送方 UE和接收方 UE的交互过程为例,对本发明提供的直接通 信中的数据传输方法进行说明。
图 10为本发明提供的直接通信中的数据传输方法实施例三的流程图,如 图 10所示, 本实施例的直接通信中的数据传输方法包括:
5601、 发送方 UE向接收方 UE发送调度信令, 调度信令包括频域资源 信息、 可占用的周期数量和传输图样信息中的至少一种。
5602、 发送方 UE根据调度信令, 向接收方 UE发送用户数据。
S603、 接收方 UE根据调度信令, 接收发送方 UE发送的用户数据。 本实施例提供的直接通信中的数据传输方法, 通过发送方 UE 向接收方 UE发送调度信令, 调度信令包括频域资源信息、可占用的周期数量和传输图 样信息, 发送方 UE根据调度信令, 向接收方 UE发送用户数据, 接收方 UE 根据调度信令, 接收发送方 UE发送的用户数据, 可以实现在直接通信过程 中接收方 UE没有反馈的情况下,发送方 UE可以重复传输用户数据,接收方
UE可以重复接收用户数据, 并对接收到的重复数据进行合并处理, 提高了数 据传输的可靠性。
在本发明所提供的几个实施例中, 应该理解到, 所揭露的装置和方法, 可以通过其它的方式实现。例如, 以上所描述的装置实施例仅仅是示意性的, 例如, 所述单元的划分, 仅仅为一种逻辑功能划分, 实际实现时可以有另外 的划分方式, 例如多个单元或组件可以结合或者可以集成到另一个系统, 或 一些特征可以忽略, 或不执行。 另一点, 所显示或讨论的相互之间的耦合或 直接耦合或通信连接可以是通过一些接口, 装置或单元的间接耦合或通信连 接, 可以是电性, 机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的, 作 为单元显示的部件可以是或者也可以不是物理单元, 即可以位于一个地方, 或者也可以分布到多个网络单元上。 可以根据实际的需要选择其中的部分或 者全部单元来实现本实施例方案的目的。
另外,在本发明各个实施例中的各功能单元可以集成在一个处理单元中, 也可以是各个单元单独物理存在, 也可以两个或两个以上单元集成在一个单 元中。 上述集成的单元既可以采用硬件的形式实现, 也可以采用硬件加软件 功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元, 可以存储在一个计算机 可读取存储介质中。 上述软件功能单元存储在一个存储介质中, 包括若干指 令用以使得一台计算机设备(可以是个人计算机, 服务器, 或者网络设备等) 或处理器 (processor) 执行本发明各个实施例所述方法的部分步骤。 而前述 的存储介质包括: U盘、移动硬盘、只读存储器(Read-Only Memory, ROM )、 随机存取存储器(Random Access Memory, RAM) 、 磁碟或者光盘等各种可 以存储程序代码的介质。
本领域技术人员可以清楚地了解到, 为描述的方便和简洁, 仅以上述各 功能模块的划分进行举例说明, 实际应用中, 可以根据需要而将上述功能分 配由不同的功能模块完成, 即将装置的内部结构划分成不同的功能模块, 以 完成以上描述的全部或者部分功能。 上述描述的装置的具体工作过程, 可以 参考前述方法实施例中的对应过程, 在此不再赘述。
最后应说明的是: 以上各实施例仅用以说明本发明的技术方案, 而非对
其限制; 尽管参照前述各实施例对本发明进行了详细的说明, 本领域的普通 技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改, 或者对其中部分或者全部技术特征进行等同替换; 而这些修改或者替换, 并 不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims
1、 一种发送方用户设备, 其特征在于, 包括:
发送模块, 用于向接收方用户设备 UE发送调度信令, 所述调度信令包 括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
处理模块, 用于根据所述调度信令, 向所述接收方 UE发送用户数据, 以使所述接收方 UE根据所述调度信令接收所述用户数据。
2、 根据权利要求 1所述的发送方用户设备, 其特征在于, 所述调度信令 还包括数据包的重复传输次数;
所述处理模块, 具体用于:
根据所述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述 频域资源信息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发送用户数据。
3、根据权利要求 2所述的发送方用户设备,其特征在于,所述处理模块, 还用于:
控制发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU,并记录发送次数为 0;若所述 HARQ 处理进程根据所述 HARQ处理进程的标识和所述传输图样确定所述第一 PDU 的传输子帧到达时, 通过所述第一 PDU的传输子帧向所述接收方 UE发送所 述第一 PDU, 并将所述发送次数加一, 直到所述发送次数达到所述数据包的 重复传输次数。
4、 根据权利要求 3所述的发送方用户设备, 其特征在于, 若第一 HARQ 处理进程对应的资源被分配给另一发送方 UE使用, 则所述处理模块在所述 发送次数达到所述数据包的重复传输次数之后, 停止使用所述第一 HARQ处 理进程。
5、根据权利要求 2所述的发送方用户设备,其特征在于,所述处理模块, 还用于:
控制发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU; 所述 MAC PDU缓存根据所述传输图样确定最小重
复间隔到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发 送次数达到所述数据包的重复传输次数,所述第二 PDU包括发送所述 HARQ 处理进程的标识。
6、 根据权利要求 1所述的发送方用户设备, 其特征在于, 所述调度信令 还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发 送方 UE待发送的用户数据为新数据。
7、 根据权利要求 1-6中任一项所述的发送方用户设备, 其特征在于, 所 述调度信令还包括发送方 UE的标识信息, 所述标识信息用于指示所述发送 方 UE的使用频域资源的优先级。
8、 根据权利要求 1-7中任一项所述的发送方用户设备, 其特征在于, 所 述调度信令还包括发送方 UE待发送的用户数据的业务类型。
9、 根据权利要求 1-8中任一项所述的发送方用户设备, 其特征在于, 所 述处理模块, 还用于:
在所述发送模块向所述接收方 UE发送调度信令之前, 生成所述调度信 令; 或者,
在所述发送模块向所述接收方 UE发送调度信令之前, 接收基站发送的 调度信令。
10、 一种接收方用户设备, 其特征在于, 包括:
接收模块, 用于接收发送方用户设备 UE发送的调度信令, 所述调度信 令包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种; 处理模块, 用于根据所述接收模块接收到的所述调度信令, 接收所述发 送方 UE发送的用户数据。
11、 根据权利要求 10所述的接收方用户设备, 其特征在于, 所述调度信 令还包括数据包的重复传输次数;
所述处理模块, 具体用于:
根据所述接收模块接收到的所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送 方 UE重复发送的所述用户数据。
12、 根据权利要求 11所述的接收方用户设备, 其特征在于, 所述处理模
块, 还用于:
根据所述传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至 与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第 二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
13、 根据权利要求 10所述的接收方用户设备, 其特征在于, 所述调度信 令还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述 发送方 UE待发送的用户数据为新数据;
所述处理模块, 还用于:
根据所述接收模块接收到的所述调度信令, 在所述可占用的周期数量指 示的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样 信息指示的传输图样接收所述发送方 UE发送的新的用户数据。
14、 根据权利要求 10-13中任一项所述的接收方用户设备, 其特征在于, 所述调度信令还包括所述发送方 UE待发送用户数据的业务类型;
所述处理模块, 还用于:
根据所述业务类型,建立与所述业务类型对应的无线链路控制 RLC实体; 根据预先存储于接收方 UE 中的配置表格中与所述业务类型对应的配置 表格配置所述 RLC实体的参数。
15、 一种发送方用户设备, 其特征在于, 包括发送器、 接收器、 存储器 以及分别与所述发送器、 所述接收器和所述存储器连接的处理器;
所述发送器, 用于向接收方用户设备 UE发送调度信令, 所述调度信令 包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述处理器, 用于根据所述调度信令, 向所述接收方 UE发送用户数据, 以使所述接收方 UE根据所述调度信令接收所述用户数据。
16、 根据权利要求 15所述的发送方用户设备, 其特征在于, 所述调度信 令还包括数据包的重复传输次数;
所述处理器, 具体用于:
根据所述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述 频域资源信息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发送用户数据。
17、根据权利要求 16所述的发送方用户设备,其特征在于,所述处理器,
还用于:
控制发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU,并记录发送次数为 0;若所述 HARQ 处理进程根据所述 HARQ处理进程的标识和所述传输图样确定所述第一 PDU 的传输子帧到达时, 通过所述第一 PDU的传输子帧向所述接收方 UE发送所 述第一 PDU, 并将所述发送次数加一, 直到所述发送次数达到所述数据包的 重复传输次数。
18、根据权利要求 17所述的发送方用户设备,其特征在于,若第一 HARQ 处理进程对应的资源被分配给另一发送方 UE使用, 则所述处理器在所述发 送次数达到所述数据包的重复传输次数之后, 停止使用所述第一 HARQ处理 进程。
19、根据权利要求 16所述的发送方用户设备,其特征在于,所述处理器, 还用于:
控制发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU; 所述 MAC PDU缓存根据所述传输图样确定最小重 复间隔到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发 送次数达到所述数据包的重复传输次数,所述第二 PDU包括发送所述 HARQ 处理进程的标识。
20、 根据权利要求 15所述的发送方用户设备, 其特征在于, 所述调度信 令还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述 发送方 UE待发送的用户数据为新数据。
21、 根据权利要求 15-20中任一项所述的发送方用户设备, 其特征在于, 所述调度信令还包括发送方 UE的标识信息, 所述标识信息用于指示所述发 送方 UE的使用频域资源的优先级。
22、 根据权利要求 15-21中任一项所述的发送方用户设备, 其特征在于, 所述调度信令还包括发送方 UE待发送的用户数据的业务类型。
23、 根据权利要求 15-22中任一项所述的发送方用户设备, 其特征在于, 所述处理器, 还用于:
在所述发送器向所述接收方 UE发送调度信令之前, 生成所述调度信令; 或者,
在所述发送器向所述接收方 UE发送调度信令之前, 接收基站发送的调 度信令。
24、 一种接收方用户设备, 其特征在于, 包括发送器、 接收器、 存储器 以及分别与所述发送器、 所述接收器和所述存储器连接的处理器;
所述接收器, 用于接收发送方用户设备 UE发送的调度信令, 所述调度 信令包括频域资源信息、 可占用的周期数量和传输图样信息中的至少一种; 所述处理器, 用于根据所述接收器接收到的所述调度信令, 接收所述发 送方 UE发送的用户数据。
25、 根据权利要求 24所述的接收方用户设备, 其特征在于, 所述调度信 令还包括数据包的重复传输次数;
所述处理器, 具体用于:
根据所述接收器接收到的所述调度信令, 在所述可占用的周期数量指示 的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信 息指示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送方 UE重复发送的所述用户数据。
26、根据权利要求 25所述的接收方用户设备,其特征在于,所述处理器, 还用于:
根据所述传输图样信息, 将第一帧中的第一子帧中的第一用户数据送至 与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第 二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
27、 根据权利要求 24所述的接收方用户设备, 其特征在于, 所述调度信 令还包括数据包为新数据的指示, 所述数据包为新数据的指示用于指示所述 发送方 UE待发送的用户数据为新数据;
所述处理器, 还用于:
根据所述接收器接收到的所述调度信令, 在所述可占用的周期数量指示 的传输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信 息指示的传输图样接收所述发送方 UE发送的新的用户数据。
28、 根据权利要求 24-27中任一项所述的接收方用户设备, 其特征在于,
所述调度信令还包括所述发送方 UE待发送用户数据的业务类型; 所述处理器, 还用于:
根据所述业务类型,建立与所述业务类型对应的无线链路控制 RLC实体; 根据预先存储于接收方 UE 中的配置表格中与所述业务类型对应的配置 表格配置所述 RLC实体的参数。
29、 一种直接通信中的数据传输方法, 其特征在于, 包括:
发送方用户设备 UE向接收方 UE发送调度信令,所述调度信令包括频域 资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述发送方 UE根据所述调度信令, 向所述接收方 UE发送用户数据, 以 使所述接收方 UE根据所述调度信令接收所述用户数据。
30、 根据权利要求 29所述的方法, 其特征在于, 所述调度信令还包括数 据包的重复传输次数;
所述发送方 UE根据所述调度信令, 向所述接收方 UE发送用户数据,包 括:
所述发送方 UE根据所述调度信令, 在所述可占用的周期数量指示的传 输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样、 按照所述数据包的重复传输次数, 向所述接收方 UE重复发 送用户数据。
31、 根据权利要求 30所述的方法, 其特征在于, 所述发送方 UE根据所 述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述频域资源信 息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数 据包的重复传输次数, 向所述接收方 UE重复发送用户数据, 包括:
所述发送方 UE的自动重传请求 HARQ处理进程在媒体接入控制分组数 据单元 MAC PDU缓存中获取第一 PDU, 并记录发送次数为 0;
所述发送方 UE的 HARQ处理进程若根据所述 HARQ处理进程的标识和 所述传输图样确定所述第一 PDU的传输子帧到达时, 通过所述第一 PDU的 传输子帧向所述接收方 UE发送所述第一 PDU, 并将所述发送次数加一, 直 到所述发送次数达到所述数据包的重复传输次数。
32、 根据权利要求 31所述的方法, 其特征在于, 若第一 HARQ处理进 程对应的资源被分配给另一发送方 UE使用,则所述发送方 UE在所述发送次
数达到所述数据包的重复传输次数之后,停止使用所述第一 HARQ处理进程。
33、 根据权利要求 30所述的方法, 其特征在于, 所述发送方 UE根据所 述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述频域资源信 息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数 据包的重复传输次数, 向所述接收方 UE重复发送用户数据, 包括:
所述发送方 UE的 MAC PDU缓存向所述发送方 UE的 HARQ处理进程 发送第二 PDU, 并记录发送次数为 1, 以使所述 HARQ处理进程在确定所述 第一 PDU的传输子帧到达时, 通过所述第二 PDU的传输子帧向所述接收方 UE发送所述第二 PDU;
所述发送方 UE的 MAC PDU缓存根据所述传输图样确定最小重复间隔 到达时, 再次向所述 HARQ处理进程发送所述第二 PDU, 直到所述发送次数 达到所述数据包的重复传输次数, 所述第二 PDU包括发送所述 HARQ处理 进程的标识。
34、 根据权利要求 29所述的方法, 其特征在于, 所述调度信令还包括数 据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发送方 UE 待发送的用户数据为新数据。
35、 根据权利要求 29-34 中任一项所述的方法, 其特征在于, 所述调度 信令还包括所述发送方 UE的标识信息, 所述标识信息用于指示所述发送方 UE的使用频域资源的优先级。
36、 根据权利要求 29-35 中任一项所述的方法, 其特征在于, 所述调度 信令还包括所述发送方 UE待发送的用户数据的业务类型。
37、 根据权利要求 29-36 中任一项所述的方法, 其特征在于, 所述发送 方用户设备 UE向接收方 UE发送调度信令之前, 还包括:
所述发送方 UE生成所述调度信令; 或者,
所述发送方 UE接收基站发送的调度信令。
38、 一种直接通信中的数据传输方法, 其特征在于, 包括:
接收方用户设备 UE接收发送方 UE发送的调度信令,所述调度信令包括 频域资源信息、 可占用的周期数量和传输图样信息中的至少一种;
所述接收方 UE根据所述调度信令,接收所述发送方 UE发送的用户数据。
39、 根据权利要求 38所述的方法, 其特征在于, 所述调度信令还包括数
据包的重复传输次数;
所述接收方 UE根据所述调度信令,接收并处理所述发送方 UE发送的用 户数据, 包括:
所述接收方 UE根据所述调度信令, 在所述可占用的周期数量指示的传 输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样、 按照所述数据包的重复传输次数, 重复接收所述发送方 UE 重复发送的所述用户数据。
40、 根据权利要求 39所述的方法, 其特征在于, 所述接收方 UE根据所 述调度信令, 在所述可占用的周期数量指示的传输子帧内、 所述频域资源信 息指示的频域位置上、 按照所述传输图样信息指示的传输图样、 按照所述数 据包的重复传输次数, 接收所述发送方 UE重复发送的所述用户数据, 包括: 所述接收方 UE根据所述传输图样信息, 将第一帧中的第一子帧中的第 一用户数据送至与所述第一子帧对应的第二自动重传请求 HARQ处理进程, 将第二帧中的第二子帧中的第二用户数据送至与所述第二子帧对应的第三 HARQ处理进程。
41、 根据权利要求 38所述的方法, 其特征在于, 所述调度信令还包括数 据包为新数据的指示, 所述数据包为新数据的指示用于指示所述发送方 UE 待发送的用户数据为新数据;
所述接收方 UE根据所述调度信令,接收并处理所述发送方 UE发送的用 户数据, 包括:
所述接收方 UE根据所述调度信令, 在所述可占用的周期数量指示的传 输子帧内、 所述频域资源信息指示的频域位置上、 按照所述传输图样信息指 示的传输图样接收所述发送方 UE发送的新的用户数据。
42、 根据权利要求 38-41 中任一项所述的方法, 其特征在于, 所述调度 信令还包括所述发送方 UE待发送用户数据的业务类型;
所述方法, 还包括:
所述接收方 UE根据所述业务类型, 建立与所述业务类型对应的无线链 路控制 RLC实体;
所述接收方 UE根据预先存储于所述接收方 UE中的配置表格中与所述业 务类型对应的配置表格配置所述 RLC实体的参数。
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US15/272,226 US10383139B2 (en) | 2014-03-21 | 2016-09-21 | Device and method for data transmission in D2D communication |
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CN108886704A (zh) * | 2016-06-17 | 2018-11-23 | Oppo广东移动通信有限公司 | 数据传输的方法和装置 |
CN108886704B (zh) * | 2016-06-17 | 2020-06-26 | Oppo广东移动通信有限公司 | 数据传输的方法和装置 |
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CN111787569B (zh) * | 2016-06-17 | 2023-01-03 | Oppo广东移动通信有限公司 | 数据传输的方法和装置 |
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CN114070512A (zh) * | 2020-08-06 | 2022-02-18 | 大唐移动通信设备有限公司 | 一种信息接收、发送方法、设备及存储介质 |
CN114070512B (zh) * | 2020-08-06 | 2023-05-02 | 大唐移动通信设备有限公司 | 一种信息接收、发送方法、设备及存储介质 |
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EP3113559A4 (en) | 2017-03-15 |
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US10383139B2 (en) | 2019-08-13 |
EP3113559B1 (en) | 2023-07-26 |
EP3113559A1 (en) | 2017-01-04 |
CN105191459B (zh) | 2020-06-02 |
US11057919B2 (en) | 2021-07-06 |
US20190320456A1 (en) | 2019-10-17 |
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