CN109155862A - A kind of video stream data transmission method, base station and user equipment - Google Patents

A kind of video stream data transmission method, base station and user equipment Download PDF

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Publication number
CN109155862A
CN109155862A CN201680085869.8A CN201680085869A CN109155862A CN 109155862 A CN109155862 A CN 109155862A CN 201680085869 A CN201680085869 A CN 201680085869A CN 109155862 A CN109155862 A CN 109155862A
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CN
China
Prior art keywords
video stream
stream data
signal
recipient
retransmit
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Pending
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CN201680085869.8A
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Chinese (zh)
Inventor
柴姝奇
刘坚能
刘安
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Huizhou TCL Mobile Communication Co Ltd
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Huizhou TCL Mobile Communication Co Ltd
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Publication of CN109155862A publication Critical patent/CN109155862A/en
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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
    • H04L1/1874—Buffer management
    • H04L1/1877—Buffer management for semi-reliable protocols, e.g. for less sensitive applications like streaming video
    • 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
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/164—Feedback from the receiver or from the transmission channel
    • H04N19/166—Feedback from the receiver or from the transmission channel concerning the amount of transmission errors, e.g. bit error rate [BER]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/172—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a picture, frame or field
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/188—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a video data packet, e.g. a network abstraction layer [NAL] unit
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder

Abstract

The invention discloses a kind of video stream data transmission methods, comprising: receives the video stream data from server；Video stream data is sent at least one recipient；The retransmission of video flow data when confirming that video stream data needs to retransmit.The invention also discloses a kind of base station and user equipmenies.By the above-mentioned means, the present invention can retransmit the video stream data of error of transmission, the reliability of video flowing transmission is significantly improved.

Description

A kind of video stream data transmission method, base station and user equipment
Technical field
The present invention relates to the communications fields, more particularly to a kind of video stream data transmission method, base station and user equipment.
Background technique
With the fast development of mobile communication, the handling capacity and transmission rate of mobile communications network have significant growth, It can be realized the video stream media business based on mobile communications network.
In the prior art, in order to meet the requirement of real-time, video flowing transmission generally uses User Datagram Protocol (user Datagram protocol, UDP), although udp protocol efficiency of transmission is high, its reliability can not show a candle to transmission control protocol (transmission control protocol, TCP), potential error of transmission such as packet loss, decoding error may drop significantly The reliability of low video flowing transmission.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of video stream data transmission method, base station and user equipment, It is able to solve the problem that video stream data transmission reliability is low in the prior art.
In order to solve the above-mentioned technical problem, one technical scheme adopted by the invention is that: a kind of video stream data is provided and is passed Transmission method, comprising: receive the video stream data from server；Video stream data is sent at least one recipient；Confirming After video stream data needs to retransmit, at least one recipient's retransmission of video flow data.
Wherein, video stream data includes key frame data packet.
Wherein, the normal frames data packet from server is received simultaneously during receiving key frame data packet, is sent crucial Normal frames data packet is sent at least one recipient simultaneously during frame data packet, and does not retransmit normal frames data packet.
Wherein, sending key frame data packet at least one recipient includes: using first channel with functions of retransmission Send key frame data packet；Sending normal frames data packet at least one recipient includes: using the without functions of retransmission Two channels send normal frames data packet.
Wherein, receive key frame data packet and normal frames data packet from server further comprises later: using deep Degree packet detection DPI divides the key frame data packet received and normal frames data packet.
Wherein, to the movement that at least one recipient sends video stream data be it is uninterrupted send, independently of at least one The movement of a recipient's retransmission of video flow data.
Wherein, further comprise: saving video stream data；The holding time of video stream data is more than that preset threshold then abandons The video stream data of preservation.
Wherein, confirmation video stream data need retransmit after, at least one recipient's retransmission of video flow data include: After receiving the signal that the mark video stream data from least one recipient needs to retransmit, retransmitted at least one recipient Video stream data；It or is being more than not receive the mark video stream data from least one recipient the predetermined time not needing weight After the signal of biography, at least one recipient's retransmission of video flow data.
Wherein, it includes at least one recipient for the key for receiving mistake that mark video stream data, which needs the signal retransmitted, Frame data packet and the negative response NACK signal fed back；The signal that mark video stream data does not need to retransmit includes that at least one connects Debit is for the affirmative acknowledgement ack signal for receiving correct key frame data packet and feeding back.
Wherein, receiving the mark video stream data from least one recipient to need the signal retransmitted includes: to receive extremely The mark video that a few recipient is sent using the physical uplink control channel PUCCH for distributing at least one recipient Flow data needs the signal retransmitted；It receives the mark video stream data from least one recipient and does not need the signal packet retransmitted It includes: receiving at least one recipient and sent using the physical uplink control channel PUCCH for distributing at least one recipient Mark video stream data do not need retransmit signal.
Wherein, receiving the mark video stream data from least one recipient to need the signal retransmitted includes: to send The 4th subframe after the subframe of video stream data receives the mark video stream data from least one recipient and needs weight The signal of biography；It does not receive the mark video stream data from least one recipient more than the predetermined time and does not need the letter retransmitted It number include: that the 4th subframe after the subframe for sending video stream data does not receive the mark from least one recipient Video stream data does not need the signal retransmitted.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, the cyclic shift and/or orthogonal sequence that the PUCCH resource that the recipient in same multicast group is assigned uses It is identical.
Wherein, the corresponding resource block of PUCCH resource that the recipient in same multicast group is assigned is identical.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, at least one recipient includes user equipment.
In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of video stream data Transmission method, comprising: receive video stream data；The signal whether mark video stream data needs to retransmit is replied to sender；It connects Receive the video stream data for needing to retransmit.
Wherein, video stream data includes key frame data packet.
Wherein, normal frames data packet is received simultaneously during receiving key frame data packet, and does not reply mark normal frames The signal whether data packet needs to retransmit.
Wherein, receiving key frame data packet includes: the key frame for receiving and being sent using first channel with functions of retransmission Data packet；Receiving normal frames data packet includes: the common frame data for receiving and being sent using the second channel without functions of retransmission Packet.
Wherein, further comprise: key frame data packet and normal frames data packet are reordered and decoded.
Wherein, replying the signal whether mark video stream data needs to retransmit to sender includes: only to receive video flowing The signal that mark video stream data needs to retransmit is replied to sender when corrupt data, so that sender is receiving mark view When the signal that frequency flow data needs to retransmit, retransmission of video flow data；Or it is only returned when reception video stream data is correct to sender Mark video stream data does not need the signal retransmitted again, so that sender is being more than the predetermined time not receive mark video flowing When data do not need the signal retransmitted, retransmission of video flow data.
Wherein, it includes feeding back for the video stream data for receiving mistake that mark video stream data, which needs the signal retransmitted, Negative response NACK signal；Mark video stream data do not need the signal retransmitted include for receiving correct video stream data and The affirmative acknowledgement ack signal of feedback.
Wherein, further comprise: if being properly received current video flow data before being properly received previous video stream data, The signal for identifying previous video stream data and needing to retransmit is not replied to sender, or is replied to sender and identified previous video fluxion According to the signal for not needing to retransmit.
Wherein, further comprise: if the time for being properly received current video flow data, which is not later than, is properly received previous video The time of flow data then abandons previous video stream data.
Wherein, replying the signal whether mark video stream data needs to retransmit to sender includes: the physics using distribution Uplink control channel PUCCH sends the signal whether mark video stream data needs to retransmit to sender.
Wherein, replying the signal whether mark video stream data needs to retransmit to sender includes: to receive video fluxion According to subframe after the 4th subframe send the mark video stream data signal that whether needs to retransmit.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, sender includes base station.
In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of base station, comprising: Receiving module, for receiving the video stream data from server；Sending module, for sending video at least one recipient Flow data；Retransmission module is used for after confirmation video stream data needs to retransmit, at least one recipient's retransmission of video fluxion According to.
Wherein, video stream data includes key frame data packet.
Wherein, receiving module is further used for during receiving key frame data packet while receiving from the general of server Logical frame data packet；Sending module is further used for sending at least one recipient simultaneously during sending key frame data packet Normal frames data packet；Retransmission module, which is not used in, retransmits normal frames data packet.
Wherein, sending module is used to send key frame data packet using first channel with functions of retransmission, using not having There is the second channel of functions of retransmission to send normal frames data packet.
Wherein, further comprise: detection module, for dividing the key frame data received using deep-packet detection DPI Packet and normal frames data packet.
Wherein, to the movement that at least one recipient sends video stream data be it is uninterrupted send, not by least one The influence of recipient's retransmission of video flow data movement.
Wherein, further comprise: preserving module, for saving video stream data；Discard module, in video stream data Holding time be more than preset threshold when abandon save video stream data.
Wherein, retransmission module is used to receive what the mark video stream data from least one recipient needed to retransmit After signal, at least one recipient's retransmission of video flow data；It or is being more than not receive the predetermined time to connect from least one After the mark video stream data of debit does not need the signal retransmitted, at least one recipient's retransmission of video flow data.
Wherein, it includes at least one recipient for the key for receiving mistake that mark video stream data, which needs the signal retransmitted, Frame data packet and the negative response NACK signal fed back；The signal that mark video stream data does not need to retransmit includes that at least one connects Debit is for the affirmative acknowledgement ack signal for receiving correct key frame data packet and feeding back.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, the cyclic shift and/or orthogonal sequence that the PUCCH resource that the recipient in same multicast group is assigned uses It is identical.
Wherein, the corresponding resource block of PUCCH resource that the recipient in same multicast group is assigned is identical.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, at least one recipient includes user equipment.
In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of user equipment, wraps It includes: the first receiving module, for receiving video stream data；Module is replied, is for replying mark video stream data to sender The no signal for needing to retransmit；Second receiving module, for receiving the video stream data for needing to retransmit.
Wherein, video stream data includes key frame data packet.
Wherein, the first receiving module is further used for during receiving key frame data packet while receiving common frame data Packet；It replys module and is not used in the signal whether reply mark normal frames data packet needs to retransmit.
Wherein, the first receiving module is used to receive the key frame data sent using first channel with functions of retransmission Packet；Receive the normal frames data packet sent using the second channel without functions of retransmission.
Wherein, further comprise: decoder module, for being reordered simultaneously to key frame data packet and normal frames data packet Decoding.
Wherein, reply module needs for only replying mark video stream data to sender when receiving video stream data error The signal to be retransmitted so that sender receive mark video stream data need retransmit signal when, retransmission of video fluxion According to；Or only reply mark video stream data to sender when reception video stream data is correct and do not need the signal retransmitted, so that Sender is obtained when being more than not receive mark video stream data the predetermined time not needing the signal retransmitted, retransmission of video fluxion According to.
Wherein, it includes feeding back for the video stream data for receiving mistake that mark video stream data, which needs the signal retransmitted, Negative response NACK signal；Mark video stream data do not need the signal retransmitted include for receiving correct video stream data and The affirmative acknowledgement ack signal of feedback.
Wherein, when replying module for being properly received current video flow data before being properly received previous video stream data, The signal for identifying previous video stream data and needing to retransmit is not replied to sender, or is replied to sender and identified previous video fluxion According to the signal for not needing to retransmit.
Wherein, further comprise: abandoning module, the time for being properly received current video flow data, which is not later than, correctly to be connect When receiving the time of previous video stream data, previous video stream data is abandoned.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, sender includes base station.
In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of base station, comprising: Processor and transceiver, processor connect transceiver；Processor is used to receive the video fluxion from server by transceiver According to；Video stream data is sent at least one recipient by transceiver；After confirmation video stream data needs to retransmit, pass through receipts Device is sent out at least one recipient's retransmission of video flow data.
Wherein, video stream data includes key frame data packet.
Wherein, processor is further used for during receiving key frame data packet by transceiver while passing through transceiver The normal frames data packet from server is received, is connect simultaneously by transceiver at least one during sending key frame data packet Debit sends normal frames data packet, and does not retransmit normal frames data packet by transceiver.
Wherein, processor is further used for sending crucial frame number by transceiver using the first channel with functions of retransmission According to packet；Normal frames data packet is sent by transceiver using the second channel without functions of retransmission.
Wherein, processor is further used for receiving key frame data packet and normal frames from server by transceiver After data packet, the key frame data packet received and normal frames data packet are divided using deep-packet detection DPI.
It wherein, is uninterruptedly to send to the movement that at least one recipient sends video stream data by transceiver, it is independent In pass through movement of the transceiver at least one recipient's retransmission of video flow data.
Wherein, processor is further used for saving video stream data；The holding time of video stream data is more than preset threshold Then abandon the video stream data of preservation.
Wherein, processor is used to receive the mark video stream data need from least one recipient by transceiver After the signal to be retransmitted, by transceiver at least one recipient's retransmission of video flow data；It or is being more than not lead to the predetermined time Cross transceiver receive the mark video stream data from least one recipient do not need retransmit signal after, pass through transceiver To at least one recipient's retransmission of video flow data.
Wherein, it includes at least one recipient for the key for receiving mistake that mark video stream data, which needs the signal retransmitted, Frame data packet and the negative response NACK signal fed back；The signal that mark video stream data does not need to retransmit includes that at least one connects Debit is for the affirmative acknowledgement ack signal for receiving correct key frame data packet and feeding back.
Wherein, processor, which is used to receive at least one recipient by transceiver to utilize, distributes at least one recipient's The mark video stream data that physical uplink control channel PUCCH is sent needs the signal retransmitted；Or it is received by transceiver At least one recipient is regarded using the mark that the physical uplink control channel PUCCH for distributing at least one recipient is sent Frequency flow data does not need the signal retransmitted.
Wherein, the 4th subframe that processor is used for after the subframe for sending video stream data by transceiver passes through receipts Hair device receives the signal that the mark video stream data from least one recipient needs to retransmit；Or it is regarded being sent by transceiver The 4th subframe after the subframe of frequency flow data does not pass through transceiver and receives the mark video from least one recipient Flow data does not need the signal retransmitted.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, the cyclic shift and/or orthogonal sequence that the PUCCH resource that the recipient in same multicast group is assigned uses It is identical.
Wherein, the corresponding resource block of PUCCH resource that the recipient in same multicast group is assigned is identical.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, at least one recipient includes user equipment.
In order to solve the above-mentioned technical problem, another technical solution used in the present invention is: providing a kind of user equipment, wraps It includes: processor and telecommunication circuit, processor connection communication circuit；Processor is used to receive video stream data by telecommunication circuit； The signal whether mark video stream data needs to retransmit is replied to sender by telecommunication circuit；It is received and is needed by telecommunication circuit The video stream data of re-transmission.
Wherein, video stream data includes key frame data packet.
Wherein, processor is further used for during receiving key frame data packet by telecommunication circuit while passing through communication Circuit receives normal frames data packet, and does not reply the letter whether mark normal frames data packet needs to retransmit by telecommunication circuit Number.
Wherein, processor is used to receive the key frame sent using first channel with functions of retransmission by telecommunication circuit Data packet；And the normal frames data packet sent using the second channel without functions of retransmission is received by telecommunication circuit.
Wherein, processor is further used for that key frame data packet and normal frames data packet are reordered and decoded.
Wherein, processor is for only replying mark view to sender by telecommunication circuit when receiving video stream data error Frequency flow data needs the signal retransmitted, so that sender is when receiving the signal that mark video stream data needs to retransmit, it is heavy Pass video stream data；Or mark video stream data is only replied to sender by telecommunication circuit when reception video stream data is correct The signal retransmitted is not needed, so that sender is being more than not receive mark video stream data the predetermined time not needing to retransmit When signal, retransmission of video flow data.
Wherein, it includes feeding back for the video stream data for receiving mistake that mark video stream data, which needs the signal retransmitted, Negative response NACK signal；Mark video stream data do not need the signal retransmitted include for receiving correct video stream data and The affirmative acknowledgement ack signal of feedback.
Wherein, if processor is further used for being properly received current video fluxion before being properly received previous video stream data According to, then the signal for not needing to retransmit to the previous video stream data of sender's reply mark by telecommunication circuit, or it is electric by communication Road direction sender, which replys, identifies the signal that previous video stream data does not need re-transmission.
Wherein, if the time that processor is further used for being properly received current video flow data be not later than be properly received it is previous The time of video stream data then abandons previous video stream data.
Wherein, processor is used to pass through using the physical uplink control channel PUCCH of distribution telecommunication circuit to transmission Side sends the signal whether mark video stream data needs to retransmit.
Wherein, the 4th subframe that processor is used for after the subframe for receiving video stream data by telecommunication circuit passes through Telecommunication circuit sends the signal whether mark video stream data needs to retransmit.
Wherein, video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
Wherein, it retransmits and uses hybrid automatic repeat-request HARQ mechanism, sender includes base station.
The beneficial effects of the present invention are: being mentioned by the video stream data for only retransmitting error of transmission when confirmation needs to retransmit The reliability of high video flowing transmission.
Detailed description of the invention
Fig. 1 is the flow chart of video stream data transmission method first embodiment of the present invention；
Fig. 2 is the schematic diagram of a picture group in the video using predictive coding；
Fig. 3 is the flow chart of video stream data transmission method second embodiment of the present invention；
Fig. 4 is to send key frame data packet using different channels in video stream data transmission method second embodiment of the present invention With the schematic diagram of normal frames data packet；
Fig. 5 is the after the subframe for sending video stream data in one embodiment of video stream data transmission method of the present invention Four subframes send the schematic diagram of answer signal；
Fig. 6 is the flow chart of video stream data transmission method fourth embodiment of the present invention；
Fig. 7 is the flow chart that timer is arranged in video stream data transmission method fourth embodiment of the present invention；
Fig. 8 is the flow chart of the 5th embodiment of video stream data transmission method of the present invention；
Fig. 9 is the flow chart of video stream data transmission method sixth embodiment of the present invention；
Figure 10 is the flow chart of the 7th embodiment of video stream data transmission method of the present invention；
Figure 11 is the flow chart of the 9th embodiment of video stream data transmission method of the present invention；
Figure 12 is the flow chart of the tenth embodiment of video stream data transmission method of the present invention；
Figure 13 is the average peak signal to noise ratio (PSNR) and the base station UEs- spacing of the existing eMBMS transport protocol as baseline From relationship and scheme provided by the invention average PSNR and UEs- base distance between sites relationship contrast schematic diagram；
Figure 14 is shown in provided by the invention scheme of the 4000m apart from upper each video frame and the PSNR gap between baseline It is intended to；
Figure 15 is shown in provided by the invention scheme of the 3500m apart from upper each video frame and the PSNR gap between baseline It is intended to；
Figure 16 is the structural schematic diagram of base station first embodiment of the present invention；
Figure 17 is the structural schematic diagram of base station second embodiment of the present invention；
Figure 18 is the structural schematic diagram of base station 3rd embodiment of the present invention；
Figure 19 is the structural schematic diagram of base station fourth embodiment of the present invention；
Figure 20 is the structural schematic diagram of user equipment first embodiment of the present invention；
Figure 21 is the structural schematic diagram of user equipment second embodiment of the present invention；
Figure 22 is the structural schematic diagram of user equipment 3rd embodiment of the present invention；
Figure 23 is the structural schematic diagram of user equipment fourth embodiment of the present invention.
The application include to " one embodiment ", " specific embodiment ", " some embodiments ", " multiple embodiments " or " real Apply example " reference.The phrase " in one embodiment, " " in a specific embodiment " of appearance, " in some embodiments ", " in various embodiments ", or the same embodiment is being not necessarily meant to refer to " in embodiment ".Special characteristic, structure or characteristic can be with Meet any suitable method combination of the application.
Multiple module, unit, circuit or other assemblies, which can be described or claimed, executes one or more appoint for " being configured to " Business.In such context, " being configured to " is used to through indicating module/unit/circuit/component include executing during operation The structure (for example, circuit) of those tasks or task realizes structure.In this way, even if when specified module/unit/circuit/group When part current inoperable (for example, being not switched on), it may also be said to which module/unit/circuit/component is configured as execution task.With Module/unit/circuit/component that " being configured to " language is used together includes hardware --- for example, circuit, storage is executable with reality The memory etc. of the program instruction now operated.Logging modle/unit/circuit/component " being configured to " executes one or more tasks It is clearly not intended to the module/unit/circuit/component and quotes 35USC § 112 (f).In addition, " being configured to " may include by software And/or the universal architecture (for example, universal circuit) of firmware (for example, general processor of FPGA or execution software) manipulation, it is general Structure is operated in a manner of being able to carry out task and solving the problems, such as." being configured to " can also include adjustment manufacturing process (for example, partly leading System manufacturing apparatus) to manufacture the equipment (for example, integrated circuit) for being adapted for carrying out or executing one or more tasks.
As used herein, term "based" describes the one or more factors for influencing to determine.The term is not excluded for possibility Influence the other factors of the decision.That is, determine can be based only upon those factors or be based at least partially on those because Element.Consider phrase " A is determined based on B ".In this case, B is the factor for influencing to determine A, and such phrase is not excluded for determining for A Determine also based on C.In other cases, the decision of A can be based entirely on B.
Specific embodiment
As shown in Figure 1, the executing subject of video stream data transmission method first embodiment of the present invention is base station.Base station connection Core net is simultaneously carried out wireless communication with user equipment, provides communication overlay for corresponding geographic area.Base station may include but not It is limited to macro base station, micro- base station (micro) or pico- base station (pico).In some embodiments, base station can also be referred to as wireless Base station, access point, B node, evolved B node (eNodeB, eNB) or other suitable terms.For purposes of illustration only, this method quilt It is shown as sequence.However, a part of of this method can execute with other sequences or parallel (such as simultaneously).The present embodiment packet It includes:
S11: the video stream data from server is received.
Server can be video content server.To meet video stream media service to the high request of real-time, adapt to Network environment complicated and changeable, video flowing are commonly used the predictive coding of high compression rate.Predictive coding is by video Frame is divided into key frame and normal frames according to importance.Key frame is otherwise known as I frame, i.e. intra-coded frame, or more specifically, Complete coded frame.The compression ratio of key frame is lower, and data packet is larger, and when coding/decoding does not need the data using other frames, changes Sentence is talked about, only with I frame itself with regard to restructural complete image.On the contrary, normal frames indicate be the frame and reference frame difference, do not have With reference to complete image cannot be obtained in the case where reference frame.The compression ratio of normal frames is higher, and data packet is smaller, in coding/solution It needs when code using the reference frame data except the normal frames.It is different according to the reference frame quantity used, normal frames be divided into P frame and B frame.P frame is forward predicted frame, with reference to the data of previous I frame or P frame；B frame be bi-directional predicted frames, with reference to front I or P frame and The data of subsequent P frame.Therefore B frame compression ratio compared with P frame is higher, and data packet is smaller.
It the use of the frame in the video of the technology is generally that unit carries out group with picture group (Group of Pictures, GOP) It knits.It include one group of continuous frame in one picture group, the first frame in each picture group is key frame, and in a picture group An only key frame.Fig. 2 is the example of a picture group, in conjunction with Fig. 2 as can be seen that B frame decoding mistake will not influence other Frame, P frame decoding mistake influence whether subsequent P frame and B frame and using it as the B frame before reference frame, and I frame decoding mistake is then Influence whether normal frames all in the picture group.
In general, base station receives the video stream data from video content server by core net.In the present embodiment Video stream data can only include key frame, normal frames can also be only included, also may include key frame and normal frames.Commonly Frame can only include P frame, can also only include B frame, also may include P frame and B frame.
S12: video stream data is sent at least one recipient.
In general, at least one recipient includes user equipment (user equipment, UE), user equipment be can be It is fixed to be also possible to mobile, including but not limited to cellular phone, personal digital assistant (PDA), radio modem, flat Plate computer, laptop, wireless phone etc..
Base station can send video stream data to user equipment in a manner of unicast, multicast or broadcast.
S13: after confirmation video stream data needs to retransmit, at least one recipient's retransmission of video flow data.
In general, base station confirms whether video stream data needs to retransmit according to the answer signal of recipient.Response letter It number may include the signal for identifying video stream data and the signal retransmitted and/or mark video stream data being needed not to need to retransmit.? In some embodiments, the signal that mark video stream data needs to retransmit can be recipient for the video stream data for receiving mistake And negative response (Non-Acknowledge, the NACK) signal fed back, the signal that mark video stream data does not need to retransmit can be with It is recipient for affirmative acknowledgement (Acknowledge, the ACK) signal for receiving correct video stream data and feeding back.
In some embodiments, re-transmission can use hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism.HARQ is a kind of by forward error correction coding (Forward Error Correction, FEC) and oneself The technology that retransmission request (Automatic Repeat reQuest, ARQ) is combined and formed is moved, is visited across physical layer and media Ask control (Media Access Control, MAC) layer.Recipient corrects a part of mistake using FEC technology, to reduce weight The number of biography.For the mistake that FEC can not be corrected, recipient can retransmit data by ARQ mechanism request sender.Sender is every Send the correspondence answer signal that a data packet is just temporarily stopped for recipient.Recipient carries out it after receiving data packet Parsing returns to affirmative acknowledgement (Acknowledge, ACK) signal if data packet receives correctly, returns if data packet receives mistake Return negative response (Non-Acknowledge, NACK) signal.When sender receives ack signal, new data are just sent, otherwise Retransmit the last data packet of recipient's garbled-reception.During waiting answer signal, channel be it is idle, do not send any Data.
Optionally, in some embodiments, it retransmits and is also possible to using wireless spread-spectrum technology (Radio Link Control, RLC) layer ARQ mechanism, be also possible to rlc layer ARQ mechanism add MAC layer and physical layer HARQ mechanism.
Implementation through the foregoing embodiment only retransmits the video stream data of error of transmission when confirmation needs to retransmit, and improves The reliability of video flowing transmission.
As shown in figure 3, video stream data transmission method second embodiment of the present invention, is transmitted in video stream data of the present invention On the basis of method first embodiment, video stream data includes key frame data packet.For purposes of illustration only, this method be illustrated as it is suitable Sequence.However, a part of of this method can execute with other sequences or parallel (such as simultaneously).The present embodiment includes:
S21: key frame data packet and normal frames data packet from server are received.
Normal frames data packet is received simultaneously during executing step S11 and receiving key frame data packet.Key in video Frame and normal frames are staggered in the time domain.The key frame data packet and normal frames data packet received can be suitable by the former time Sequence arrangement, is also possible to upset sequence.
S22: key frame data packet and normal frames data packet are sent at least one recipient.
Normal frames data packet is sent simultaneously during executing step S12 and sending key frame data packet.Base station can dock The key frame data packet and normal frames data packet of receipts are then forwarded to recipient after resequencing sequentially in time, can also be straight It connects and sends in the order received.
S23: not retransmitting normal frames data packet, and when confirming that key frame data packet needs to retransmit, retransmits key frame data Packet.
Not retransmitting normal frames data packet may include two types.The first is general even if receiving the mark from recipient Logical frame data packet needs not retransmitting the normal frames data packet still when the signal retransmitted.Second is that recipient will not send for general Any answer signal of logical frame data packet, in such cases can be by key frame data packet and normal frames when executing step S22 Data packet is used separately different channels and sends.
In conjunction with attached drawing for example, as shown in figure 4, in Packet Data Convergence Protocol (Packet Data Convergence Protocol, PDCP) layer divides the key frame data packet that receives and normal frames data packet.It is transmitted in video stream data of the present invention In one embodiment of method, divided using deep-packet detection (Deep Packet Inspection, DPI).It is then separated Key frame data packet and normal frames data packet are transferred to rlc layer respectively.The RLC layer is key frame data packet and normal frames Data packet configures non-answer-mode (Unacknowledged Mode, UM), i.e., does not use ARQ mechanism in rlc layer.
Key frame data packet passes through the first logic with rlc protocol data cell (Protocol Data Unit, PDU) format Channel is transmitted to MAC layer from rlc layer, and normal frames data packet is by the second logic channel independently of the first logic channel from RLC Layer is transferred to MAC layer.Key frame data packet after HARQ entity handles, forms transmission block in MAC layer.Transmission block is passed by first Defeated channel is transferred to physical layer from MAC layer, and subsequent physical layer realizes that CRC insertion and physical layer mix ARQ function.And common frame number It is transmitted by the second transmission channel independently of the first transmission channel from MAC layer in MAC layer without HARQ entity handles according to packet To physical layer.
As can be seen that in the above example, after dividing key frame data packet and the normal frames data packet in video, using The first channel transfer key frame data packet with functions of retransmission transmits normal frames using the second channel without functions of retransmission Data packet, wherein the first channel may include the first logic channel and the first transmission channel, second channel may include second patrolling Collect channel and the second transmission channel.The physical channel that transmission key frame data packet and normal frames data packet use can be identical, It can be different.
If the normal frames and key frame of video all introduce functions of retransmission, although reliability is guaranteed, excessive is upper Row signaling and downlink retransmit and very big flow can be brought to bear and may influence real-time.And in the present embodiment, only needing Shi Chongchuan key frame data packet, the frequency retransmitted substantially reduce.Further, since key frame data packet is important in decoding Property be higher than normal frames data packet, only retransmit key frame data packet and reduce while can be improved reliability to a certain extent and retransmit Bring traffic overhead can't cause to significantly affect to real-time.
Video stream data transmission method 3rd embodiment of the present invention is real in video stream data transmission method first of the present invention On the basis of applying example, retransmitted using improved retransmission mechanism.The present embodiment can be combined with any of the above embodiment.
In existing HARQ or ARQ mechanism current data block send must the ack signal for receiving last data block it Afterwards, if last data block needs to retransmit, current data block has to wait for the re-transmission of last data block.And in the present embodiment to The movement that at least one recipient sends video stream data is uninterrupted transmission, is acted independently of re-transmission.Specifically, base station to At least one recipient sends the movement of video stream data independently of the movement for retransmitting previous video stream data, it is meant that base station hair Send the ACK that previous video stream data is withouted waiting for before current video flow data.
Recipient in the prior art can return to two kinds of signals of ack signal or NACK, and in order to further in the present embodiment Signaling overheads is reduced, recipient only returns to one of two kinds of signals of ack signal and NACK.
When recipient only returns to ack signal, if base station is more than the predetermined time not receive ack signal, video is confirmed Flow data needs to retransmit, and retransmits video stream data.When recipient only returns to NACK signal, if base station receives NACK letter Number, then confirm that video stream data needs to retransmit, retransmission of video flow data.
In various embodiments, recipient can use the physical uplink control channel (Physical of distribution Uplink Control Channel, PUCCH) send answer signal.Optionally, in some embodiments, recipient can benefit Answer signal is sent with physical uplink shared channel (Physical Uplink Shared Channel, PUSCH).
In order to be further reduced signaling overheads, answer signal can be to send the of video stream data in base station with United Dispatching The 4th subframe after N number of subframe is sent.That is, recipient sends answer signal in the N+4 subframe, as shown in Figure 5.Response In the case that signal is NACK signal, if base station receives NACK signal in the N+4 subframe, video stream data needs are confirmed It retransmits.In the case that answer signal only includes ack signal, if base station does not receive ack signal in the N+4 subframe, confirm Video stream data needs to retransmit.
As shown in fig. 6, video stream data transmission method fourth embodiment of the present invention, is transmitted in video stream data of the present invention On the basis of method first embodiment, further comprise:
S14: video stream data is saved.
The execution of this step is after step S11 execution, and to support to retransmit before step S13, the execution with step S12 can To carry out simultaneously, can also independently carry out.When retransmitting using HARQ mechanism, video stream data is generally saved with data block format MAC layer in base station.
S15: the video stream data of preservation is abandoned if being more than preset threshold if the holding time of video stream data.
Holding time at the time of transmission from video stream data to video stream data can determine at the time of reaching preset threshold Justice is maximum allowable re-transmission time.Holding time is more than the video stream data that preset threshold then abandons preservation, to save base station Spatial cache.After abandoning the video stream data saved, even if confirming that the video stream data needs to retransmit, it can not also retransmit again.
In conjunction with attached drawing for example, as shown in fig. 7, base station saves video stream data simultaneously while sending video stream data Start a timer, to carry out timing to the time after video stream data transmission.If reaching maximum in timer to permit Perhaps mark video stream data that recipient's feedback is received before re-transmission time needs the NACK signal retransmitted then to retransmit the video Flow data.Timer can be reset into initial value as shown in Figure 7 when retransmitting the video stream data, can not also to timer into Row modification.When timer reaches maximum allowable re-transmission time, the video stream data of preservation is abandoned.
In various embodiments, video stream data may include enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) business datum.
By only sending a data packet to one group of user, identical data can be sent to and be connected to same access by multicast One group of recipient of point (access point, AP) or base station, improves bandwidth occupancy compared with unicast technique.3GPP exists first Version 6 for Universal Mobile Telecommunications System (Universal Mobile Telecommunications System, UMTS) (Rel-6) introduced in multicast broadcast multimedia service (Multimedia Broadcast Multicast Service, MBMS) standard, to provide broadcast service in cellular network.Since then, MBMS continues evolution in later release, up to now Still in standardization state.From 3GPP standard Rel-9, together with the appearance of long term evolution (Long Term Evolution, LTE), MBMS is referred to as evolution MBMS (eMBMS) and is included in evolved universal terrestrial radio access network (Evolved Universal Terrestrial Radio Access Network, E-UTRAN) in.
When base station sends video stream data with multicast mode, video stream data can be sent in corresponding multicast group simultaneously All recipients.It base station, will if it is confirmed that the video stream data of at least one recipient needs to retransmit in corresponding multicast group Video stream data is still retransmitted with multicast mode to all recipients in corresponding multicast group.If base station is that basis receives The NACK signal of return confirms that video stream data needs to retransmit, and can be inferred that different recipients in same multicast group return NACK signal for base station have same meaning, therefore base station need not distinguish between be on earth which or which receive Side returns NACK signal, it means that different recipients can be multiplexed when transmitting NACK signal in same multicast group.
When to further decrease signaling overheads, when recipient sends NACK signal using the PUCCH resource of distribution, base station The PUCCH resource of multiple recipients in same multicast group can be multiplexed.Specifically, the reception in same multicast group The sequence spreading and/or corresponding resource block that just assigned PUCCH resource uses can be identical.
Sequence spreading includes cyclic shift and/or orthogonal sequence.Specifically, for PUCCH format 1a/1b, Ke Yili The nack message position of recipient is modulated to a complex value modulation symbol d (0) with BPSK/QPSK, uses S (ns) d (0) is carried out Scrambling, after in frequency domain blocky extension is carried out to the d (0) after scrambling using orthogonal sequence using cyclic shift and in time domain.At this time Sequence spreading includes cyclic shift and orthogonal sequence.For PUCCH format 2a/2b, BPSK/QPSK can use by recipient's Nack message position is modulated to a complex value modulation symbol d (10), carries out blocky extension using cyclic shift in frequency domain to d (10), Then it is modulated to second demodulation reference signal (Demodulation reference signal, DMRS) of each time slot In, sequence spreading only includes cyclic shift at this time.For PUCCH format 3, it can use QPSK and believe the NACK of recipient A complex value modulation symbol is modulated and then is modulated in the scrambling of breath position, is carried out using orthogonal sequence to the complex value modulation symbol in time domain Bulk extension.Sequence spreading only includes orthogonal sequence at this time.
The sequence spreading used when the PUCCH resource that the recipient in same multicast group is assigned and corresponding resource block phase Together, it when and recipient can not obtain channel state information (channel-state information, CSI), sends and believes to base station Number open cycle system such as formula (1) shown in, wherein K indicate multicast service group in send response key frame data packet transmission NACK disappear Recipient's sum of breath, hiIt is the channel coefficients of i-th of recipient, n indicates to receive noise, and w indicates to accord with for modulating NACK Number x is mapped to the sequence spreading of PUCCH channel.
The sequence spreading used when the PUCCH resource that the recipient in same multicast group is assigned and corresponding resource block phase Together, when and recipient and base station can obtain CSI, by maximal ratio transmission (maximum ratio transmission, MRT multi-user diversity gain may be implemented) to maximize signal-to-noise ratio (signal noise ratio, SNR).Sending signal becomes The linear transformation of channel vector receives signal and is provided by y=hwg+n.The corresponding closed-loop system such as formula that signal is sent to base station (2) shown in wherein, the factor.Indicate normalization factor, the same formula of the definition of other parameters (1).
As shown in figure 8, the executing subject of the 5th embodiment of video stream data transmission method of the present invention is user equipment.User Equipment, which can be fixed, is also possible to movement, can be cellular phone, personal digital assistant (PDA), wireless modulation-demodulation Device, tablet computer, laptop, wireless phone etc..For purposes of illustration only, this method is illustrated as sequence.However, this method A part of can be executed with other sequences or parallel (such as simultaneously).The present embodiment includes:
S31: video stream data is received.
In general, base station is the sender of video stream data.
Video stream data can only include key frame, can also only include normal frames, also may include key frame and common Frame.Normal frames can only include P frame, can also only include B frame, also may include P frame and B frame.
S32: the signal whether mark video stream data needs to retransmit is replied to sender.
In general, the mark video stream data signal that whether needs to retransmit can be answer signal, answer signal can be with The signal retransmitted and/or mark video stream data is needed not to need the signal retransmitted including mark video stream data.
In an embodiment of the present invention, the signal that mark video stream data needs to retransmit can be for for the view for receiving mistake Frequency flow data and negative response (Non-Acknowledge, the NACK) signal fed back, what mark video stream data did not needed to retransmit Signal can be for for affirmative acknowledgement (Acknowledge, the ACK) signal for receiving correct video stream data and feeding back.
In an embodiment of the present invention, the physical uplink control channel of distribution (Physical Uplink is utilized Control Channel, PUCCH) signal for identifying video stream data and whether needing to retransmit is sent to sender, i.e. response is believed Number.Certainly, in other embodiments of the present invention, UE also can use physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) send answer signal.
In order to be further reduced signaling overheads, UE can the n-th subframe for receiving the video stream data from sender it The 4th subframe afterwards, i.e. the N+4 subframe send answer signal, can refer to shown in Fig. 5.UE sends the case where NACK signal Under, if sender receives NACK signal in the N+4 subframe, confirm that video stream data needs to retransmit.UE only sends ACK letter In the case where number, if sender does not receive ack signal in the N+4 subframe, confirm that video stream data needs to retransmit.
S33: the video stream data for needing to retransmit is received.
Receive the video stream data that sender retransmits according to answer signal.
In some embodiments, re-transmission can use hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism.HARQ is a kind of by forward error correction coding (Forward Error Correction, FEC) and oneself The technology that retransmission request (Automatic Repeat reQuest, ARQ) is combined and formed is moved, is visited across physical layer and media Ask control (Media Access Control, MAC) layer.Recipient corrects a part of mistake using FEC technology, to reduce weight The number of biography.For the mistake that FEC can not be corrected, recipient can retransmit data by ARQ mechanism request sender.Sender is every It sends a data packet just temporarily to stop, waits the answer signal of recipient.Recipient solves it after receiving data packet Analysis returns if data packet reception mistake if data packet receives correct, return affirmative acknowledgement (Acknowledge, ACK) signal Negative response (Non-Acknowledge, NACK) signal.When sender receives ack signal, new data are just sent, are otherwise weighed The last data packet of new transmitting and receiving side garbled-reception.And during waiting answer signal, channel be it is idle, do not send any Data.
Optionally, in some embodiments, it retransmits and is also possible to using wireless spread-spectrum technology (Radio Link Control, RLC) layer ARQ mechanism, be also possible to rlc layer ARQ mechanism add MAC layer and physical layer HARQ mechanism.
Implementation through the foregoing embodiment only retransmits the video stream data of error of transmission when confirmation needs to retransmit, and improves The reliability of video flowing transmission.
As shown in figure 9, video stream data transmission method sixth embodiment of the present invention, is transmitted in video stream data of the present invention On the basis of the 5th embodiment of method, video stream data includes key frame data packet.The present embodiment includes:
S41: key frame data packet and normal frames data packet are received.
Normal frames data packet is received simultaneously during executing step S31 and receiving key frame data packet.Key in video Frame and normal frames are staggered in the time domain.The key frame data packet and normal frames data packet received can be suitable by the former time Sequence arrangement, is also possible to upset sequence.
Channel used by key frame data packet and normal frames data packet are transmitted may be the same or different.In this hair In a bright embodiment, using the first transmission key frame data packet with functions of retransmission, using without functions of retransmission Second channel transmits normal frames data packet, and concrete example can refer to Fig. 4 and its corresponding description.
S42: the signal whether mark key frame data packet needs to retransmit is replied to sender, does not reply mark normal frames The signal whether data packet needs to retransmit.
S43: the key frame data packet for needing to retransmit is received.
If the normal frames and key frame of video all introduce functions of retransmission, although reliability is guaranteed, excessive is upper Row signaling and downlink re-transmission can bring very big flow to bear, and may influence real-time.And in the present embodiment, only needing Shi Chongchuan key frame data packet, the frequency retransmitted substantially reduce.Further, since key frame data packet is important in decoding Property be higher than normal frames data packet, only retransmit key frame data packet and reduce while can be improved reliability to a certain extent and retransmit Bring traffic overhead can't cause to significantly affect to real-time.
As shown in Figure 10, the 7th embodiment of video stream data transmission method of the present invention is passed in video stream data of the present invention On the basis of the 5th embodiment of transmission method, further comprise:
S34: key frame data packet and normal frames data packet are reordered and is decoded.
The key frame data packet and normal frames data packet that UE is received may be to upset sequence, play video to be correct, It needs to key frame data packet and normal frames data packet according to former time sequencing rearrangement then further decoding broadcasting.The present embodiment It can be combined with video stream data transmission method sixth embodiment of the present invention.
The 8th embodiment of video stream data transmission method of the present invention is real in video stream data transmission method the 5th of the present invention On the basis of applying example, retransmitted using improved retransmission mechanism.The present embodiment can be with video stream data transmission side of the present invention Method the 6th or the 7th embodiment combine.
Recipient in existing HARQ or ARQ, i.e. UE in the present embodiment can return to mark video stream data and not need (such as ACK) signal and mark video stream data retransmitted needs (such as NACK) signal for retransmitting totally two kinds of signals, and this reality It applies in order to be further reduced signaling overheads in example, UE only returns to one of two kinds of signals.
When UE only returns to ack signal, if sender is more than the predetermined time not receive the ack signal from UE, really Recognize video stream data to need to retransmit, retransmission of video flow data.When UE only returns to NACK signal, connect if sender receives to come from The NACK signal of debit then confirms that video stream data needs to retransmit, retransmission of video flow data.
As shown in figure 11, the 9th embodiment of video stream data transmission method of the present invention is passed in video stream data of the present invention On the basis of the 5th embodiment of transmission method, further comprise:
S35: it if being properly received current video flow data before being properly received previous video stream data, is not returned to sender The signal that previous video stream data needs to retransmit is identified again, or is replied the previous video stream data of mark to sender and do not needed to retransmit Signal.
If UE is received by before being properly received previous video stream data and correctly parses current video flow data, Then sender can be notified no longer to retransmit previous video stream data, such as do not reply the previous video stream data of mark to sender to need The signal to be retransmitted, or the signal for identifying previous video stream data and not needing re-transmission is replied to sender.Mistake is received at this time Previous video stream data can be dropped, and can also directly be played.
In general, the present embodiment is very high to requirement of real-time suitable for working as video (for example, programme televised live), or not It is required that when playback, and being correctly decoded for current video flow data does not need to take previous video stream data as example the case where reference Such as both for I frame, perhaps B frame or previous video stream data are B frame, and current video flow data is P frame or I frame etc..This reality Applying example can combine with any of the 6th to the 8th embodiment of video stream data transmission method of the present invention.
As shown in figure 12, the tenth embodiment of video stream data transmission method of the present invention is passed in video stream data of the present invention On the basis of the 5th embodiment of transmission method, further comprise:
S36: if the time for being properly received current video flow data is not later than the time for being properly received previous video stream data, Then abandon previous video stream data.
If the time that UE correctly parses current video flow data is not later than the time for correctly parsing previous video stream data, Previous video stream data is then abandoned, previous video stream data is can skip at this time and directly plays current video flow data.This feelings The appearance of condition may include because the sequence entanglement, and/or previous video stream data error of transmission that sender sends need to retransmit Lead to delay etc..
In general, the present embodiment is very high to requirement of real-time suitable for working as video (for example, programme televised live), or not It is required that when playback, and being correctly decoded for current video flow data does not need to take previous video stream data as example the case where reference Such as both for I frame, perhaps B frame or previous video stream data are B frame, and current video flow data is P frame or I frame etc..This reality Applying example can combine with any of the 6th to the 9th embodiment of video stream data transmission method of the present invention.
In various embodiments, video stream data includes enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) business datum.
The performance simulation of scheme provided by the present application is given below in the advantages of in order to which the application is better described, and uses this Invention video stream data transmission method first is to the combination of 3rd embodiment, and wherein video stream data includes eMBMS data and UE It is returned only to NACK signal.
Performance indicator used in video flowing simulated measurement is Y-PSNR (Peak Signal to Noise Ratio, PSNR), PSNR is typically considered the most common method for measuring video quality.It is surveyed used here as yuv format Video and transmission video are tried, because most of information are stored in luminance component, if completing sparse seldom letter of U and V component Breath can be lost.Simulation configurations are as shown in table 1.Existing eMBMS transport protocol scheme is considered as baseline.UE is sent in decoding frame After side, H.264 decoder is for detecting different types of frame data packet.Because data-bag lost may cause video damage, Such as pixelation effect etc., and more actual wireless transmission situation is constructed, we are by the average PSNR and UEs- of comparison base Average PSNR and UEs- base distance between sites 30 times of base distance between sites and scheme provided by the present application.We also pass through emulation and compare The video quantitative effect of the fixed packet loss of every frame between two schemes.
Table 1
Channel is the LTE channel mould of the Urban MicroScenario in the B.1.2.2 section according to 3GPP TR 36.814 What type generated.It is 3dBi that user equipment antenna mode, which is assumed to be omnidirectional and antenna gain,.Path loss model by PL (dB)= 40log10 (d) -12.6 is provided, and wherein d is the distance as unit of rice.B.1.2.2.1-4 according to the table of 3GPP TR 36.814 Select channel model parameters.
Simulation result is as shown in figure 13, and wherein we are using the average PSNR of entire video clip as performance indicator, therefore, PSNR result is generated by comparing original video files and the video of transmission.Figure 13 shows, with increasing between the base station UEs-, depending on Frequency quality sharply declines, this is because the path loss of multicast transmission leads to data-bag lost.Since existing protocol cannot be institute There is the video frame of type to provide reliable transmission, if important frame is destroyed in wireless channel, false positive can travel to whole A GOP, to influence entire GOP mass.
The PSNR that Figure 14 and Figure 15 respectively illustrates the two schemes in 4000m and 3500m apart from upper each video frame is poor Away from.Other than key frame data, each video frame implementation having the same in two schemes.It is worth noting that, Scheme provided by the present application provides video quality more better than baseline for all video frames.
As shown in figure 16, base station first embodiment of the present invention includes:
Receiving module 11, for receiving the video stream data from server.
Sending module 12, for sending video stream data at least one recipient.
Retransmission module 13 is used for after confirmation video stream data needs to retransmit, at least one recipient's retransmission of video stream Data.
Each module that the base station of the present embodiment includes is passed for executing the corresponding video stream data of the present invention of Fig. 1 and Fig. 1 Each step in transmission method first embodiment, particular content please refer to the corresponding video stream data transmission of the present invention of Fig. 1 and Fig. 1 Method first embodiment, details are not described herein.
In some embodiments, video stream data includes key frame data packet.
In some embodiments, receiving module 11 is further used for during receiving key frame data packet while receiving to come From the normal frames data packet of server；Sending module 12 is further used for during sending key frame data packet simultaneously at least One recipient sends normal frames data packet；Retransmission module 13, which is not used in, retransmits normal frames data packet.
In some embodiments, sending module 12 is used to send key frame data using first channel with functions of retransmission Packet；Normal frames data packet is sent using the second channel without functions of retransmission.
As shown in figure 17, base station second embodiment of the present invention is on the basis of base station first embodiment of the present invention, into one Step includes:
Detection module 14, for what is received using deep-packet detection (Deep Packet Inspection, DPI) division Key frame data packet and normal frames data packet.
As shown in figure 18, base station 3rd embodiment of the present invention is on the basis of base station first embodiment of the present invention, into one Step includes:
Preserving module 15, for saving video stream data.
Discard module 16 abandons the video fluxion saved when for the holding time in video stream data more than preset threshold According to.
In some embodiments, retransmission module 13 is for receiving the mark video fluxion from least one recipient After the signal for needing to retransmit, at least one recipient's retransmission of video flow data；It or is being more than not receive the predetermined time From after the signal that the mark video stream data of at least one recipient does not need re-transmission, at least one recipient's retransmission of video stream Data.
In some embodiments, it includes at least one recipient for reception that mark video stream data, which needs the signal retransmitted, The key frame data packet of mistake and negative response (Non-Acknowledge, the NACK) signal fed back；Identify video stream data not The signal for needing to retransmit includes at least one recipient for the affirmative acknowledgement for receiving correct key frame data packet and feeding back (Acknowledge, ACK) signal.
In some embodiments, video stream data includes enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) business datum.
In some embodiments, cyclic shift that the PUCCH resource that the recipient in same multicast group is assigned uses and/ Or orthogonal sequence is identical.
In some embodiments, the corresponding resource block of PUCCH resource that the recipient in same multicast group is assigned is identical.
In some embodiments, it retransmits and uses hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism, at least one recipient includes user equipment.
As shown in figure 16, base station fourth embodiment of the present invention includes: processor 110 and transceiver 120, and processor 110 is logical Cross bus coupling transceiver 120.
Transceiver 120 is the interface that base station is communicated with other communication equipments for sending and receiving data.
The operation of 110 control base station of processor, processor 110 can also be known as CPU (Central Processing Unit, central processing unit).Processor 110 may be a kind of IC chip, the processing capacity with signal.Processor 110 can also be general processor, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor It can be microprocessor or the processor be also possible to any conventional processor etc..
Base station may further include memory (being not drawn into figure), and memory must for the work of storage processor 110 The instruction and data needed, also can store the received data of transceiver 120.
Processor 110 is used to receive the video stream data from server by transceiver 120；By transceiver 120 to At least one recipient sends video stream data；When confirming that video stream data needs to retransmit, by transceiver 120 at least one A recipient's retransmission of video flow data.
In some embodiments, video stream data includes key frame data packet.
In some embodiments, processor 110 is further used for during connecing key frame data packet while passing through transmitting-receiving Device 120 receives the normal frames data packet from server, passes through transceiver 120 during sending key frame data packet simultaneously to extremely A few recipient sends normal frames data packet, and does not retransmit normal frames data packet by transceiver 120.
In some embodiments, processor 110 is used to pass through transceiver 120 using first channel with functions of retransmission and send out Send key frame data packet；Normal frames data packet is sent by transceiver 120 using the second channel without functions of retransmission.
In some embodiments, processor 110 is used to receive the key frame data from server by transceiver 120 After packet and normal frames data packet, the key received is divided using deep-packet detection (Deep Packet Inspection, DPI) Frame data packet and normal frames data packet.
In some embodiments, the movement of video stream data is sent at least one recipient as not by transceiver 120 Interruption send, independently of pass through movement of the transceiver 120 at least one recipient's retransmission of video flow data.
In some embodiments, processor 110 is for saving video stream data；The holding time of video stream data is more than pre- If threshold value then abandons the video stream data of preservation.
In some embodiments, processor 110 is used to receive by transceiver 120 from least one recipient's After mark video stream data needs the signal that retransmits, by transceiver 120 at least one recipient's retransmission of video flow data；Or Be more than the predetermined time do not pass through transceiver 120 receive the mark video stream data from least one recipient do not need weight After the signal of biography, by transceiver 120 at least one recipient's retransmission of video flow data.
In some embodiments, it includes at least one recipient for reception that mark video stream data, which needs the signal retransmitted, The key frame data packet of mistake and negative response (Non-Acknowledge, the NACK) signal fed back；Identify video stream data not The signal for needing to retransmit includes at least one recipient for the affirmative acknowledgement for receiving correct key frame data packet and feeding back (Acknowledge, ACK) signal.
In some embodiments, processor 110 is used to receive at least one recipient by transceiver 120 to utilize and distribute to The mark that the physical uplink control channel (Physical Uplink Control Channel, PUCCH) of recipient is sent Video stream data needs the signal retransmitted；Or at least one recipient utilization is received by transceiver 120 and distributes to recipient's The mark video fluxion that physical uplink control channel (Physical Uplink Control Channel, PUCCH) is sent According to the signal for not needing to retransmit.
In some embodiments, processor 110 is used for after the subframe for sending video stream data by transceiver 120 4th subframe receives the signal that the mark video stream data from least one recipient needs to retransmit by transceiver 120； Or by transceiver 120 send video stream data subframe after the 4th subframe not by transceiver 120 receive come The signal retransmitted is not needed from the mark video stream data of at least one recipient.
In some embodiments, video stream data includes enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) data.
In some embodiments, cyclic shift that the PUCCH resource that the recipient in same multicast group is assigned uses and/ Or orthogonal sequence is identical.
In some embodiments, the corresponding resource block of PUCCH resource that the recipient in same multicast group is assigned is identical.
In some embodiments, it retransmits and uses hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism, at least one recipient includes user equipment.
The function of various pieces specifically refers to video stream data transmission method of the present invention in each embodiment in base station of the present invention Description in corresponding embodiment, is not repeated herein.
As shown in figure 20, user equipment first embodiment of the present invention includes:
First receiving module 21, for receiving video stream data.
Module 22 is replied, for replying the signal whether mark video stream data needs to retransmit to sender.
Second receiving module 23, for receiving the video stream data for needing to retransmit.
In some embodiments, video stream data includes key frame data packet.
In some embodiments, the first receiving module 21 is further used for during receiving key frame data packet while connecing Receive normal frames data packet；It replys module 22 and is not used in the signal whether reply mark normal frames data packet needs to retransmit.
In some embodiments, the first receiving module 21 is used to receive using the first channel transmission with functions of retransmission Key frame data packet；Receive the normal frames data packet sent using the second channel without functions of retransmission.
As shown in figure 21, user equipment second embodiment of the present invention is the base in user equipment first embodiment of the present invention On plinth, further comprise:
Decoder module 24, for key frame data packet and normal frames data packet to be reordered and decoded.
In some embodiments, module 22 is replied to identify for only replying when receiving video stream data error to sender Video stream data needs the signal that retransmits, so that sender is when receiving the signal that mark video stream data needs to retransmit, Retransmission of video flow data；Or mark video stream data only is replied to sender when reception video stream data is correct and does not need to retransmit Signal so that sender be more than the predetermined time do not receive mark video stream data do not need retransmit signal when, weight Pass video stream data.
In some embodiments, it includes for the video fluxion for receiving mistake that mark video stream data, which needs the signal retransmitted, According to and feed back negative response (Non-Acknowledge, NACK) signal；Mark video stream data does not need the signal packet retransmitted It includes for affirmative acknowledgement (Acknowledge, the ACK) signal for receiving correct video stream data and feeding back.
In some embodiments, work as forward sight for being properly received before being properly received previous video stream data if replying module Frequency flow data does not reply the signal for identifying previous video stream data and needing to retransmit to sender then, or replys and identify to sender Previous video stream data does not need the signal retransmitted.
As shown in figure 22, user equipment 3rd embodiment of the present invention is the base in user equipment first embodiment of the present invention On plinth, further comprise:
Module 25 is abandoned, if the time for being properly received current video flow data, which is not later than, is properly received previous video flowing The time of data then abandons previous video stream data.
In some embodiments, video stream data includes enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) data.
In some embodiments, it retransmits and uses hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism, sender includes base station.
As shown in figure 23, user equipment fourth embodiment of the present invention includes: processor 210 and telecommunication circuit 220, processor 210 couple telecommunication circuit 220 by bus.
Telecommunication circuit 220 is the interface that user equipment is communicated with other communication equipments for sending and receiving data.
Processor 210 controls the operation of user equipment, and processor 210 can also be known as CPU (Central Processing Unit, central processing unit).Processor 210 may be a kind of IC chip, the processing capacity with signal.Processor 210 can also be general processor, digital signal processor (DSP), specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware components.General processor It can be microprocessor or the processor be also possible to any conventional processor etc..
User equipment may further include memory (being not drawn into figure), and memory works for storage processor 210 Necessary instruction and data also can store the received data of telecommunication circuit 220.
Processor 210 is used to receive video stream data by telecommunication circuit 220；It is returned by telecommunication circuit 220 to sender The signal whether mark video stream data needs to retransmit again；The video stream data for needing to retransmit is received by telecommunication circuit 220.
In some embodiments, video stream data includes key frame data packet.
In some embodiments, processor 210 is used for same during receiving key frame data packet by telecommunication circuit 220 When by telecommunication circuit 220 receive normal frames data packet, and not by telecommunication circuit 220 reply identify normal frames data packet be The no signal for needing to retransmit.
In some embodiments, processor 210 is used to receive by telecommunication circuit 220 using first with functions of retransmission The key frame data packet that channel is sent；And it is received by telecommunication circuit 220 and is sent using the second channel without functions of retransmission Normal frames data packet.
In some embodiments, processor 210 is further used for carrying out key frame data packet and normal frames data packet weight It sorts and decodes.
In some embodiments, processor 210 for only receive video stream data error when by telecommunication circuit 220 to Sender replys the signal that mark video stream data needs to retransmit, so that sender is receiving mark video stream data needs When the signal of re-transmission, retransmission of video flow data；Or only pass through telecommunication circuit 220 to sender when reception video stream data is correct It replys mark video stream data and does not need the signal retransmitted, so that sender is being more than the predetermined time not receive mark video When flow data does not need the signal retransmitted, retransmission of video flow data.
In some embodiments, it includes for the video fluxion for receiving mistake that mark video stream data, which needs the signal retransmitted, According to and feed back negative response (Non-Acknowledge, NACK) signal；Mark video stream data does not need the signal packet retransmitted It includes for affirmative acknowledgement (Acknowledge, the ACK) signal for receiving correct video stream data and feeding back.
In some embodiments, if processor 210 is current for being properly received before being properly received previous video stream data Video stream data does not then reply the signal for identifying previous video stream data and needing to retransmit to sender by telecommunication circuit 220, or The signal for identifying previous video stream data and not needing re-transmission is replied to sender by telecommunication circuit 220.
In some embodiments, if the time that processor 210 is used to be properly received current video flow data is not later than correctly The time of previous video stream data is received, then abandons previous video stream data.
In some embodiments, processor 210 is used for the physical uplink control channel (Physical using distribution Uplink Control Channel, PUCCH) whether needed by telecommunication circuit 220 to sender's transmission mark video stream data The signal to be retransmitted.
In some embodiments, processor 210 is used for after the subframe for receiving video stream data by telecommunication circuit 220 The 4th subframe the mark video stream data signal that whether needs to retransmit is sent by telecommunication circuit 220.
In some embodiments, video stream data includes enhancing multimedia broadcast multi-broadcasting business (Enhanced Multimedia Broadcast Multicast Service, eMBMS) data.
In some embodiments, it retransmits and uses hybrid automatic repeat-request (Hybrid Automatic Repeat ReQuest, HARQ) mechanism, sender includes base station.
The function of various pieces specifically refers to video stream data transmission of the present invention in each embodiment of user equipment of the present invention Description in method corresponding embodiment, is not repeated herein.
In several embodiments provided by the present invention, it should be understood that disclosed base station, user equipment and method, It may be implemented in other ways.For example, base station and user equipment embodiment described above is only schematical, For example, the division of the module or unit, only a kind of logical function partition, can there is other division side in actual implementation Formula, such as multiple units or components can be combined or can be integrated into another system, or some features can be ignored, or not It executes.Another point, shown or discussed mutual coupling, direct-coupling or communication connection can be to be connect by some Mouthful, the indirect coupling or communication connection of device or unit can be electrical property, mechanical or other forms.
The unit as illustrated by the separation member may or may not be physically separated, aobvious as unit The component shown may or may not be physical unit, it can and it is in one place, or may be distributed over multiple In network unit.Some or all of unit therein can be selected to realize present embodiment scheme according to the actual needs Purpose.
It, can also be in addition, the functional units in various embodiments of the present invention may be integrated into one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product When, it can store in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words It embodies, which is stored in a storage medium, including some instructions are used so that a computer It is each that equipment (can be personal computer, server or the network equipment etc.) or processor (processor) execute the present invention The all or part of the steps of embodiment the method.And storage medium above-mentioned includes: USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk Etc. the various media that can store program code.
Mode the above is only the implementation of the present invention is not intended to limit the scope of the invention, all to utilize this Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content, it is relevant to be applied directly or indirectly in other Technical field is included within the scope of the present invention.

Claims (80)

1. a kind of video stream data transmission method characterized by comprising
Receive the video stream data from server；
The video stream data is sent at least one recipient；
After confirming that the video stream data needs to retransmit, the video stream data is retransmitted at least one described recipient.
2. the method according to claim 1, wherein
The video stream data includes key frame data packet.
3. according to the method described in claim 2, it is characterized in that,
During receiving the key frame data packet while the normal frames data packet from the server is received, sends the pass The normal frames data packet is sent at least one described recipient simultaneously during key frame data packet, and is not retransmitted described general Logical frame data packet.
4. according to the method described in claim 3, it is characterized in that,
It is described to include: at least one recipient transmission key frame data packet
The key frame data packet is sent using the first channel with functions of retransmission；
It is described to include: at least one recipient transmission normal frames data packet
The normal frames data packet is sent using the second channel without functions of retransmission.
5. according to the method described in claim 3, it is characterized in that,
The reception further comprises after key frame data packet and normal frames data packet from server:
Using the key frame data packet and normal frames data packet received described in deep-packet detection DPI division.
6. the method according to any one of claims 1 to 5, which is characterized in that
The movement for sending the video stream data at least one described recipient be it is uninterrupted send, independently of it is described to At least one described recipient retransmits the movement of the video stream data.
7. the method according to any one of claims 1 to 5, which is characterized in that further comprise:
Save the video stream data；
The holding time of the video stream data is more than the video stream data that preset threshold then abandons the preservation.
8. the method according to any one of claims 1 to 5, which is characterized in that
It is described after confirming that the video stream data needs to retransmit, retransmit the video stream data at least one described recipient Include:
After receiving the signal that the mark video stream data from least one recipient needs to retransmit, to described At least one recipient retransmits the video stream data；Or
It is being more than not receive the mark video stream data from least one recipient the predetermined time not needing weight After the signal of biography, the video stream data is retransmitted at least one described recipient.
9. according to the method described in claim 8, it is characterized in that,
It includes at least one described recipient for reception mistake that the mark video stream data, which needs the signal retransmitted, The key frame data packet and the negative response NACK signal fed back；
It includes that at least one described recipient is correct for receiving that the mark video stream data, which does not need the signal retransmitted, The key frame data packet and the affirmative acknowledgement ack signal that feeds back.
10. according to the method described in claim 8, it is characterized in that,
The mark video stream data of the reception from least one recipient needs the signal retransmitted to include:
At least one described recipient is received using the physical uplink control channel for distributing at least one recipient The signal that the mark that PUCCH the is sent video stream data needs to retransmit；
The signal that the mark video stream data of the reception from least one recipient does not need to retransmit includes:
At least one described recipient is received using the physical uplink control channel for distributing at least one recipient PUCCH) mark video stream data sent does not need the signal retransmitted.
11. according to the method described in claim 8, it is characterized in that,
The mark video stream data of the reception from least one recipient needs the signal retransmitted to include:
The 4th subframe after the subframe for sending the video stream data receives the institute from least one recipient It states and identifies the signal that the video stream data needs to retransmit；
Described is more than the predetermined time not receive the mark video stream data from least one recipient not needing to retransmit Signal include:
The 4th subframe after the subframe for sending the video stream data does not receive from least one described recipient The mark video stream data do not need retransmit signal.
12. method according to any one of claims 1-5, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
13. according to the method for claim 12, which is characterized in that
The cyclic shift and/or orthogonal sequence that the PUCCH resource that recipient in same multicast group is assigned uses are identical.
14. according to the method for claim 12, which is characterized in that
The corresponding resource block of the PUCCH resource that recipient in same multicast group is assigned is identical.
15. method according to any one of claims 1-5, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, at least one described recipient includes user equipment.
16. a kind of video stream data transmission method characterized by comprising
Receive video stream data；
The signal for identifying the video stream data and whether needing to retransmit is replied to sender；
Receive the video stream data for needing to retransmit.
17. according to the method for claim 16, which is characterized in that
The video stream data includes key frame data packet.
18. according to the method for claim 17, which is characterized in that
During receiving the key frame data packet while normal frames data packet is received, and does not reply the mark common frame number The signal for whether needing to retransmit according to packet.
19. according to the method for claim 18, it is characterised in that:
It is described to receive the key frame data packet and include:
Receive the key frame data packet sent using first channel with functions of retransmission；
The reception normal frames data packet includes:
Receive the normal frames data packet sent using the second channel without functions of retransmission.
20. according to the method for claim 18, which is characterized in that further comprise:
The key frame data packet and the normal frames data packet are reordered and decoded.
21. method described in any one of 6-20 according to claim 1, which is characterized in that
Described reply to sender identifies the signal whether video stream data needs to retransmit and includes:
It is only replied when receiving video stream data error to described sender and identifies what the video stream data needed to retransmit Signal, so that described sender retransmits the video when receiving the signal that the mark video stream data needs to retransmit Flow data；Or
Only the mark video stream data is replied to described sender when the reception video stream data is correct not needing to retransmit Signal so that described sender be more than the predetermined time do not receiving it is described mark video stream data do not need retransmit letter Number when, retransmit the video stream data.
22. according to the method for claim 21, which is characterized in that
It includes anti-for the video stream data for receiving mistake that the mark video stream data, which needs the signal retransmitted, The negative response NACK signal of feedback；
The mark video stream data do not need the signal retransmitted include for receiving the correctly video stream data and The affirmative acknowledgement ack signal of feedback.
23. method described in any one of 6-20 according to claim 1, which is characterized in that further comprise:
If being properly received current video flow data before being properly received previous video stream data, does not reply and mark to described sender Know the signal that the previous video stream data needs to retransmit, or is replied to described sender and identify the previous video stream data not The signal for needing to retransmit.
24. method described in any one of 6-20 according to claim 1, which is characterized in that further comprise:
If the time for being properly received current video flow data is not later than the time for being properly received previous video stream data, institute is abandoned State previous video stream data.
25. method described in any one of 6-20 according to claim 1, which is characterized in that
Described reply to sender identifies the signal whether video stream data needs to retransmit and includes:
The mark video stream data is sent to described sender using the physical uplink control channel PUCCH of distribution The signal for whether needing to retransmit.
26. method described in any one of 6-20 according to claim 1, which is characterized in that
Described reply to sender identifies the signal whether video stream data needs to retransmit and includes:
Whether the 4th subframe after the subframe for receiving the video stream data sends the mark video stream data The signal for needing to retransmit.
27. method described in any one of 6-20 according to claim 1, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
28. method described in any one of 6-20 according to claim 1, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, and described sender includes base station.
29. a kind of base station characterized by comprising
Receiving module, for receiving the video stream data from server；
Sending module, for sending the video stream data at least one recipient；
Retransmission module is used for after confirming that the video stream data needs to retransmit, to described at least one described recipient re-transmission Video stream data.
30. base station according to claim 29, which is characterized in that
The video stream data includes key frame data packet.
31. base station according to claim 30, which is characterized in that
The receiving module is further used for during receiving the key frame data packet while receiving from the server Normal frames data packet；
The sending module is further used for during sending the key frame data packet simultaneously at least one described reception Side sends the normal frames data packet；
The retransmission module, which is not used in, retransmits the normal frames data packet.
32. base station according to claim 31, which is characterized in that
The sending module is used to send the key frame data packet using first channel with functions of retransmission, using not having The second channel of functions of retransmission sends the normal frames data packet.
33. base station according to claim 31, which is characterized in that further comprise:
Detection module, for using the key frame data packet and normal frames data packet received described in deep-packet detection DPI division.
34. the base station according to any one of claim 29-33, which is characterized in that
The movement for sending the video stream data at least one described recipient be it is uninterrupted send, independently of it is described to At least one described recipient retransmits the movement of the video stream data.
35. the base station according to any one of claim 29-33, which is characterized in that further comprise:
Preserving module, for saving the video stream data；
Discard module abandons the video flowing of the preservation when being more than preset threshold for the holding time in the video stream data Data.
36. the base station according to any one of claim 29-33, which is characterized in that
The retransmission module be used for receive the video stream data of the mark from least one recipient need weight After the signal of biography, the video stream data is retransmitted at least one described recipient；It or is being more than not receive the predetermined time From after the signal that the mark video stream data of at least one recipient does not need re-transmission, at least one described reception Video stream data described in Fang Chongchuan.
37. base station according to claim 36, which is characterized in that
It includes at least one described recipient for reception mistake that the mark video stream data, which needs the signal retransmitted, The key frame data packet and the negative response NACK signal fed back；
It includes that at least one described recipient is correct for receiving that the mark video stream data, which does not need the signal retransmitted, The key frame data packet and the affirmative acknowledgement ack signal that feeds back.
38. the base station according to any one of claim 29-33, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
39. the base station according to claim 38, which is characterized in that
The cyclic shift and/or orthogonal sequence that the PUCCH resource that recipient in same multicast group is assigned uses are identical.
40. the base station according to claim 38, which is characterized in that
The corresponding resource block of the PUCCH resource that recipient in same multicast group is assigned is identical.
41. the base station according to any one of claim 29-33, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, at least one described recipient includes user equipment.
42. a kind of user equipment characterized by comprising
First receiving module, for receiving video stream data；
Module is replied, for replying the signal for identifying the video stream data and whether needing to retransmit to sender；
Second receiving module, for receiving the video stream data for needing to retransmit.
43. user equipment according to claim 42, which is characterized in that
The video stream data includes key frame data packet.
44. user equipment according to claim 43, which is characterized in that
First receiving module is further used for during receiving the key frame data packet while receiving common frame data Packet；
The module of replying is not used in the signal whether the reply mark normal frames data packet needs to retransmit.
45. user equipment according to claim 44, which is characterized in that
First receiving module is used to receive the key frame data packet sent using first channel with functions of retransmission； Receive the normal frames data packet sent using the second channel without functions of retransmission.
46. user equipment according to claim 44, which is characterized in that further comprise:
Decoder module, for the key frame data packet and the normal frames data packet to be reordered and decoded.
47. the user equipment according to any one of claim 42-46, which is characterized in that
The reply module identifies the video for only replying when receiving video stream data error to described sender Flow data needs the signal retransmitted, so that described sender is receiving the signal for identifying video stream data and needing to retransmit When, retransmit the video stream data；Or it is only replied described in mark when the reception video stream data is correct to described sender Video stream data does not need the signal retransmitted, so that described sender is being more than the predetermined time not receive the mark video When flow data does not need the signal retransmitted, the video stream data is retransmitted.
48. user equipment according to claim 47, which is characterized in that
It includes anti-for the video stream data for receiving mistake that the mark video stream data, which needs the signal retransmitted, The negative response NACK signal of feedback；
The mark video stream data do not need the signal retransmitted include for receiving the correctly video stream data and The affirmative acknowledgement ack signal of feedback.
49. the user equipment according to any one of claim 42-46, which is characterized in that
When the reply module is for being properly received current video flow data before being properly received previous video stream data, not to institute State sender and reply the signal that the mark previous video stream data needs to retransmit, or to described sender reply mark it is described before One video stream data does not need the signal retransmitted.
50. the user equipment according to any one of claim 42-46, which is characterized in that further comprise:
Abandon module, the time for being properly received current video flow data be not later than be properly received previous video stream data when Between when, abandon the previous video stream data.
51. the user equipment according to any one of claim 42-46, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
52. the user equipment according to any one of claim 42-46, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, and described sender includes base station.
53. a kind of base station characterized by comprising processor and transceiver, the processor connect the transceiver；
The processor is used to receive the video stream data from server by the transceiver；By the transceiver to extremely A few recipient sends the video stream data；After confirming that the video stream data needs to retransmit, pass through the transceiver The video stream data is retransmitted at least one described recipient.
54. base station according to claim 53, which is characterized in that
The video stream data includes key frame data packet.
55. base station according to claim 54, which is characterized in that
The processor be further used for during receiving the key frame data packet simultaneously by the transceiver receive come From the normal frames data packet of the server, to described during sending the key frame data packet while by the transceiver At least one recipient sends the normal frames data packet, and does not retransmit the normal frames data packet by the transceiver.
56. base station according to claim 55, which is characterized in that
The processor is further used for sending the key by the transceiver using the first channel with functions of retransmission Frame data packet；The normal frames data packet is sent by the transceiver using the second channel without functions of retransmission.
57. base station according to claim 55, which is characterized in that
The processor is further used for receiving the key frame data packet and institute from server by the transceiver After stating normal frames data packet, using the key frame data packet and normal frames data packet received described in deep-packet detection DPI division.
58. the base station according to any one of claim 53-57, which is characterized in that
It is described that the movement of the video stream data is sent at least one described recipient as uninterrupted hair by the transceiver It send, independently of the movement for retransmitting the video stream data at least one described recipient by the transceiver.
59. the base station according to any one of claim 53-57, which is characterized in that
The processor is further used for saving the video stream data；The holding time of the video stream data is more than default threshold Value then abandons the video stream data of the preservation.
60. the base station according to any one of claim 53-57, which is characterized in that
The processor is for receiving the video fluxion of the mark from least one recipient by the transceiver After the signal for needing to retransmit, the video stream data is retransmitted at least one described recipient by the transceiver；Or The mark video stream data from least one recipient is not received by the transceiver more than the predetermined time to be not required to After the signal to be retransmitted, the video stream data is retransmitted at least one described recipient by the transceiver.
61. base station according to claim 60, which is characterized in that
It includes at least one described recipient for reception mistake that the mark video stream data, which needs the signal retransmitted, The key frame data packet and the negative response NACK signal fed back；
It includes that at least one described recipient is correct for receiving that the mark video stream data, which does not need the signal retransmitted, The key frame data packet and the affirmative acknowledgement ack signal that feeds back.
62. base station according to claim 60, which is characterized in that
The processor be used to receive by the transceiver at least one described recipient using distribute to it is described at least one The signal that the mark that the physical uplink control channel PUCCH of recipient the is sent video stream data needs to retransmit； Or at least one described recipient is received using the physical uplink for distributing at least one recipient by the transceiver The mark video stream data that link control channel PUCCH is sent does not need the signal retransmitted.
63. base station according to claim 60, which is characterized in that
Four subframe of the processor for after the subframe for sending the video stream data by the transceiver is logical It crosses the transceiver and receives the signal that the mark video stream data from least one recipient needs to retransmit； Or the 4th subframe after the subframe for sending the video stream data by the transceiver does not pass through the transceiver and connects It receives the mark video stream data from least one recipient and does not need the signal retransmitted.
64. the base station according to any one of claim 53-57, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
65. base station according to claim 64, which is characterized in that
The cyclic shift and/or orthogonal sequence that the PUCCH resource that recipient in same multicast group is assigned uses are identical.
66. base station according to claim 64, which is characterized in that
The corresponding resource block of the PUCCH resource that recipient in same multicast group is assigned is identical.
67. the base station according to any one of claim 53-57, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, at least one described recipient includes user equipment.
68. a kind of user equipment characterized by comprising processor and telecommunication circuit, the processor connect the communication electricity Road；
The processor is used to receive video stream data by the telecommunication circuit；It is replied by the telecommunication circuit to sender Identify the signal whether video stream data needs to retransmit；The video flowing for needing to retransmit is received by the telecommunication circuit Data.
69. user equipment according to claim 68, which is characterized in that
The video stream data includes key frame data packet.
70. user equipment according to claim 69, which is characterized in that
The processor is further used for during receiving the key frame data packet by the telecommunication circuit while passing through The telecommunication circuit receives normal frames data packet, and is not by the telecommunication circuit reply mark normal frames data packet The no signal for needing to retransmit.
71. user equipment according to claim 70, which is characterized in that
The processor is used to receive the pass sent using first channel with functions of retransmission by the telecommunication circuit Key frame data packet；And the normal frames sent using the second channel without functions of retransmission are received by the telecommunication circuit Data packet.
72. user equipment according to claim 70, which is characterized in that
The processor is further used for that the key frame data packet and the normal frames data packet are reordered and decoded.
73. the user equipment according to any one of claim 68-72, which is characterized in that
The processor by the telecommunication circuit when receiving video stream data error to described sender for only being returned The signal that the video stream data needs to retransmit is identified again, so that described sender is receiving the mark video stream data When the signal for needing to retransmit, the video stream data is retransmitted；Or only when the reception video stream data is correct by described logical Letter circuit replys the signal for identifying the video stream data and not needing re-transmission to described sender, so that described sender is super Cross the predetermined time do not receive it is described mark video stream data do not need retransmit signal when, retransmit the video stream data.
74. the user equipment according to claim 73, which is characterized in that
It includes anti-for the video stream data for receiving mistake that the mark video stream data, which needs the signal retransmitted, The negative response NACK signal of feedback；
The mark video stream data do not need the signal retransmitted include for receiving the correctly video stream data and The affirmative acknowledgement ack signal of feedback.
75. the user equipment according to any one of claim 68-72, which is characterized in that
If the processor is further used for being properly received current video flow data before being properly received previous video stream data, The signal that the mark previous video stream data needs to retransmit is not replied to described sender by the telecommunication circuit, or passed through The telecommunication circuit replys the signal for identifying the previous video stream data and not needing re-transmission to described sender.
76. the user equipment according to any one of claim 68-72, which is characterized in that
If the time that the processor is further used for being properly received current video flow data, which is not later than, is properly received previous video The time of flow data then abandons the previous video stream data.
77. the user equipment according to any one of claim 68-72, which is characterized in that
The processor is used for using the physical uplink control channel PUCCH of distribution through the telecommunication circuit to the hair The side of sending sends the signal whether the mark video stream data needs to retransmit.
78. the user equipment according to any one of claim 68-72, which is characterized in that
The processor is for the 4th subframe after the subframe for receiving the video stream data by the telecommunication circuit The signal whether the mark video stream data needs to retransmit is sent by the telecommunication circuit.
79. the user equipment according to any one of claim 68-72, which is characterized in that
The video stream data includes enhancing multimedia broadcast multi-broadcasting business eMBMS data.
80. the user equipment according to any one of claim 68-72, which is characterized in that
Described retransmit uses hybrid automatic repeat-request HARQ mechanism, and described sender includes base station.
CN201680085869.8A 2016-08-19 2016-08-19 A kind of video stream data transmission method, base station and user equipment Pending CN109155862A (en)

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