WO2016177155A1 - 一种数据传输方法及系统 - Google Patents

一种数据传输方法及系统 Download PDF

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Publication number
WO2016177155A1
WO2016177155A1 PCT/CN2016/076865 CN2016076865W WO2016177155A1 WO 2016177155 A1 WO2016177155 A1 WO 2016177155A1 CN 2016076865 W CN2016076865 W CN 2016076865W WO 2016177155 A1 WO2016177155 A1 WO 2016177155A1
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WIPO (PCT)
Prior art keywords
user equipment
information
network side
conflict resolution
data
Prior art date
Application number
PCT/CN2016/076865
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English (en)
French (fr)
Inventor
张芳
戴谦
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US15/744,271 priority Critical patent/US20180213572A1/en
Priority to EP16789149.8A priority patent/EP3331308A4/en
Publication of WO2016177155A1 publication Critical patent/WO2016177155A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • 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
    • 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
    • H04L1/1893—Physical mapping arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/04—Error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
    • H04W74/0841—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure with collision treatment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J2013/165—Joint allocation of code together with frequency or time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0078—Timing of allocation
    • H04L5/0082—Timing of allocation at predetermined intervals

Definitions

  • This application relates to, but is not limited to, the field of wireless communications.
  • Machine Type Communication is defined as communication between devices in the network and another entity, or communication between devices. Usually, MTC does not require human participation, thus making the Internet of Things (IoT) possible. At present, with the bottleneck of traditional business growth, the industry and operators are paying more and more attention to the Internet of Things.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • MTC Mobile-to-Human
  • H2H Human-to-Human
  • FIG. 1 is a flow chart of data transmission using a scheduling application method in the related art.
  • the network reserves a dedicated uplink control channel to the UE to release other physical channel resources.
  • SR Scheduling Request
  • PUCCH Physical Uplink Control Channel
  • the network side (such as the base station eNB) sends a scheduling grant (SG, Scheduling Grant) information is sent to the UE, and then the UE performs uplink data transmission on the authorized resource.
  • SR Scheduling Request
  • PUCCH Physical Uplink Control Channel
  • SG Scheduling Grant
  • the UE performs random access when accessing the network for the first time.
  • the UE can enter a dormant state during the data gap to save the UE's battery overhead and network.
  • Resource overhead when the uplink data arrives, the UE is in the "out of sync" state or no available uplink control channel resources are sent to the signaling network to obtain subsequent uplink transmission resources.
  • a pre-scheduled resource may also be used, that is, regardless of whether the UE has data, a dedicated data channel is always allocated to the UE, and the UE needs to send data. At this time, data can be transmitted on the dedicated data channel.
  • the disadvantage of this scheme is that the base station needs to reserve a part of dedicated resources to the UE regardless of whether the UE has uplink data transmission, and thus, wastes resources.
  • the above-mentioned dedicated data channel can be changed to a contention data channel to implement contention-based transmission, which is also called a contention-based (CB) method.
  • the uplink resource is shared among several UEs, and when the uplink data of the UE is reached, the data is transmitted through contention.
  • 2 is a flow chart of data transmission based on a competition mode in the related art.
  • the network side such as the base station eNB
  • the UE performs uplink data transmission on the contention resources after receiving.
  • good performance can be achieved.
  • the problem of this solution is that when the number of UEs sharing the contention resources is large, it is difficult for the base station side to correctly decode the data from each UE, and the base station side cannot distinguish whether the reception failure is due to a collision or a transmission quality problem. Therefore, effective retransmission is not possible.
  • UE1 and UE2 transmit data on the contention resources at the same time, the base station side cannot correctly decode the data from UE1 and UE2, and therefore cannot respond; or the base station side receives the data of UE1, but the cyclic redundancy check (CRC, Cyclic Redundancy Check) fails.
  • CRC Cyclic Redundancy Check
  • RLC Radio Link Control
  • This paper provides a data transmission method and system for solving the conflict problem caused by resource competition in multi-user equipment in the related art.
  • a data transmission method includes: the network side sends pre-scheduling authorization information and conflict resolution information to the user equipment; the network side receiving user equipment sends the codebook configuration information carried in the conflict resolution information on the resource indicated by the pre-scheduling authorization information. The data.
  • the codebook configuration information includes: codebook group information and sequence number information in the codebook group, where the codebook is a spreading code having orthogonal or quasi-orthogonal characteristics.
  • the method further includes: configuring, by the network side, the conflict resolution information for the user equipment.
  • the configuring, by the network side, the conflict resolution information for the user equipment includes:
  • the network side configures codebook group information and sequence number information in the codebook group for each user equipment;
  • the network side configures codebook group information for each user equipment.
  • the method further includes: periodically updating the network side or triggering an update or reconfiguration by a trigger event. Pre-scheduling authorization information and conflict resolution information sent to the user equipment.
  • the sending, by the network side, the pre-scheduling authorization information and the conflict resolution information to the user equipment includes any one or any of the following:
  • the network side sends the pre-scheduling authorization information and the conflict resolution information to the user equipment by using one or more control signalings of the Physical Downlink Control Channel (PDCCH), and indicates the pre-scheduling information by using one or more identifier information.
  • PDCCH Physical Downlink Control Channel
  • conflict resolution information ;
  • the network side sends the pre-scheduling authorization information and the conflict resolution information to the user equipment through the Physical Downlink Shared Channel (PDSCH), and sends the signaling carrying the downlink authorization information through the physical downlink control channel, and indicates that the downlink authorization information is Downlink authorization information of a Media Access Control (MAC) control unit (CE, Control Element) including conflict resolution information;
  • MAC Media Access Control
  • the network side configures the Connection Reconfiguration signaling by using a Radio Resource Control (RRC) connection to send pre-scheduling authorization information and conflict resolution information to the user equipment.
  • RRC Radio Resource Control
  • the method further includes at least one of the following step:
  • the network side When the network side successfully decodes the data sent by the user equipment, the network side sends an acknowledgement ACK response message to the user equipment; or
  • the network side fails to decode the data sent by the user equipment, and the network side does not successfully detect the conflict resolution user equipment identifier sent by the user equipment, the network side does not send a response message to the user equipment;
  • the network side When the network side fails to decode the data sent by the user equipment, and the network side successfully detects the conflict resolution user equipment identifier sent by the user equipment, the network side sends an unacknowledged NACK response message to the user equipment, and sends an uplink scheduling authorization to the user equipment. Information is used to retransmit data.
  • the method further includes: if the network side determines that there is still data in the user equipment cache to be transmitted, the network side sends uplink scheduling authorization information to the user equipment, where Transfer new data.
  • a data transmission method includes: a user equipment receives pre-scheduling authorization information and conflict resolution information sent by a network side; and a resource indicated by the user equipment according to the codebook configuration information carried in the conflict resolution information in the pre-scheduling authorization information Send data to the network side.
  • the codebook configuration information includes: codebook group information and sequence number information in the codebook group, where the codebook is a spreading code having orthogonal or quasi-orthogonal characteristics.
  • the sending, by the user equipment, the data to the network side on the resource indicated by the pre-scheduled authorization information, according to the codebook configuration information carried in the conflict resolution information includes:
  • the user equipment acquires or selects a spreading codebook according to the codebook configuration information carried in the conflict resolution information, and uses the spreading codebook to extend the original data, and the resource indicated by the pre-scheduling authorization information
  • the uplink data is sent, and the conflict resolution user equipment (UE) identifier (ID) and/or the Buffer Status Report (BSR) information are sent or carried.
  • UE conflict resolution user equipment
  • ID conflict resolution user equipment
  • BSR Buffer Status Report
  • the user equipment acquires or selects a spreading codebook according to the codebook configuration information carried in the conflict resolution information, and uses the spreading codebook to extend the original data, where the pre-scheduling is performed.
  • the uplink data is sent on the resource indicated by the authorization information, and the UE ID that sends or carries the conflict resolution includes:
  • the user equipment sends a user equipment dedicated scheduling request (SR) signaling by using a Physical Uplink Control Channel (PUCCH), and the time-frequency resource location of the SR signaling corresponds to the user equipment identifier; or
  • SR user equipment dedicated scheduling request
  • PUCCH Physical Uplink Control Channel
  • the user equipment carries a mask corresponding to the UE ID uniquely in the physical uplink control channel or the Physical Uplink Control Channel (PUSCH).
  • PUSCH Physical Uplink Control Channel
  • the method further includes: receiving, by the user equipment, the user equipment, according to the codebook configuration information carried in the conflict resolution information, The response feedback message sent by the network side confirms that the data transmission succeeds or fails according to the response feedback message.
  • the method further includes: when the user equipment sends the data to the network side according to the code configuration information carried in the conflict resolution information.
  • the data still needs to be transmitted in the cache, and when the user equipment receives the uplink authorization information sent by the network side, the new number is transmitted on the uplink authorization resource indicated by the uplink authorization information. According to or retransmit the data.
  • a data transmission system is applied to the network side, and includes: a first sending module, configured to: send pre-scheduling authorization information and conflict resolution information to the user equipment; the first receiving module is configured to: receive the user equipment according to the The codebook configuration information carried in the conflict resolution information is data sent on the resource indicated by the pre-scheduling authorization information.
  • the codebook configuration information includes: codebook group information and sequence number information in a codebook group, where the codebook is a spreading code having orthogonal or quasi-orthogonal characteristics.
  • system further includes: a configuration module, configured to: configure conflict resolution information for the user equipment.
  • the configuration module is configured to:
  • system further includes: a configuration module, configured to: periodically or trigger the update or reconfigure the pre-scheduling authorization information and the conflict resolution information sent to the user equipment by the trigger event.
  • a configuration module configured to: periodically or trigger the update or reconfigure the pre-scheduling authorization information and the conflict resolution information sent to the user equipment by the trigger event.
  • the first sending module is configured to: send pre-scheduling authorization information and conflict resolution information to the user equipment, including any one or any of the following manners:
  • Pre-scheduling authorization information and conflict resolution information are sent to the user equipment through RRC Connection Reconfiguration signaling.
  • the first sending module is further configured to: perform at least one of the following steps:
  • the response message is not sent to the user equipment
  • the unacknowledged NACK response message is sent to the user equipment, and the uplink scheduling authorization information is sent to the user equipment for retransmitting the data.
  • the first sending module is further configured to: when sending an acknowledgement ACK response message to the user equipment, if it is determined that there is still data in the user equipment cache to be transmitted, send uplink scheduling grant information to the user equipment for transmission. New data.
  • a data transmission system is applied to a user equipment, comprising: a second receiving module, configured to: receive pre-scheduling authorization information and conflict resolution information sent by the network side; and the second sending module is configured to: according to the conflict resolution information
  • the carried codebook configuration information sends data to the network side on the resource indicated by the pre-scheduling authorization information.
  • the codebook configuration information includes: codebook group information and sequence number information in a codebook group, where the codebook is a spreading code having orthogonal or quasi-orthogonal characteristics.
  • the second sending module is configured to: obtain or select a spreading codebook according to the codebook configuration information carried in the conflict resolution information, and expand the original data by using the spreading codebook, Sending uplink data on the resource indicated by the pre-scheduling grant information, and sending or carrying the conflict resolution UE ID and/or BSR information.
  • the second sending module is configured to:
  • the user equipment-specific SR signaling is sent by using the PUCCH, and the time-frequency resource location of the SR signaling is in one-to-one correspondence with the user equipment identifier; or
  • a mask uniquely corresponding to the UE ID is carried in the PUCCH or PUSCH.
  • the second receiving module is further configured to: receive a response feedback message sent by the network side, and confirm, according to the response feedback message, that the data transmission succeeds or fails.
  • the second sending module is further configured to: when the user equipment cache still needs data to be transmitted, and the receiving module receives the uplink authorization information sent by the network side, the uplink indicated by the uplink authorization information Transfer new data or retransmit data on the authorized resource.
  • a computer readable storage medium storing computer executable instructions, the computer being executable
  • the line instructions are used to perform the method of any of the above.
  • the network side sends the pre-scheduling authorization information and the conflict resolution information to the user equipment; the network side receiving the user equipment sends the codebook configuration information carried in the conflict resolution information on the resource indicated by the pre-scheduling authorization information. data.
  • the uplink data transmission delay is shortened, and at the same time, the conflict problem caused by the resource competition of the multi-user equipment is effectively solved, and the waste of resources is avoided.
  • 1 is a flow chart of data transmission using a scheduling application method in the related art
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a data transmission method according to Embodiment 1 of the present invention.
  • FIG. 6 is a schematic diagram of a codebook according to Embodiment 1 of the present invention.
  • FIG. 7 is a schematic structural diagram of data of conflict resolution information according to Embodiment 1 of the present invention.
  • FIG. 8 is a schematic diagram of a data transmission system according to an embodiment of the present invention (applied to a network side);
  • FIG. 9 is a schematic diagram of a data transmission system (applied to a user equipment) according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 3, the data transmission method provided in this embodiment includes the following steps:
  • Step 11 The network side sends pre-scheduling authorization information and conflict resolution information to the user equipment.
  • the method further includes: configuring, by the network side, a conflict resolution signal for the user equipment. interest.
  • the conflict resolution information includes codebook configuration information
  • the codebook configuration information includes: codebook group information and sequence number information in the codebook group.
  • the codebook is a spreading code, such as a complex-domain pseudo-random sequence, a low-density spreading code, etc., and has orthogonal or quasi-orthogonal characteristics, and the network side adopts an advanced receiver technology, which can effectively distinguish different user equipments.
  • the data The network side groups all available codebooks, wherein the codebooks are grouped according to the autocorrelation and cross-correlation characteristics of the codebook, and the codebooks with better autocorrelation and cross-correlation characteristics are grouped.
  • the network side determines the codebook configuration information of the user equipment according to information such as system load, user context information, interference and radio channel quality status, and number of available time-frequency domain resources.
  • the network side configures conflict resolution information for the user equipment, including:
  • the network side configures codebook group information and sequence number information in the codebook group for each user equipment;
  • the network side configures codebook group information for each user equipment.
  • the network side configures the codebook group information and the sequence number information in the codebook group for each user equipment, after obtaining the information, the user equipment directly obtains the original codebook, and uses the codebook to perform the spread spectrum processing and then sends the data;
  • the network side configures the codebook group information for each user equipment, after the user equipment obtains the information, the user equipment selects a codebook in the codebook group, and uses the codebook to perform the spread spectrum processing and then sends the data.
  • step 11 includes any one or any of the following methods:
  • the network side sends the pre-scheduling authorization information and the conflict resolution information to the user equipment by using one or more control signalings of the Physical Downlink Control Channel (PDCCH), and indicates the control signaling in the control signaling by using one or more identifier information.
  • the information is the pre-scheduling authorization information and the conflict resolution information.
  • the pre-scheduling authorization information and the conflict resolution information may be placed in the same control signaling, or may be separately sent into multiple control signalings, and differentiated by using different identification information. Identification
  • the network side sends the pre-scheduling authorization information and the conflict resolution information to the user equipment through the Physical Downlink Shared Channel (PDSCH), and sends the signaling carrying the downlink authorization information through the physical downlink control channel, and indicates that the downlink authorization information is Downlink authorization information of a Media Access Control (MAC) control unit (CE, Control Element) including conflict resolution information;
  • MAC Media Access Control
  • the network side sends pre-scheduling authorization information and conflict resolution information to the user equipment by using RRC (Radio Resource Control) signaling, for example, by using RRC connection reconfiguration signaling.
  • RRC Radio Resource Control
  • Step 12 The network side receives data that is sent by the user equipment on the resource indicated by the pre-scheduling authorization information according to the codebook configuration information carried in the conflict resolution information.
  • the method may further include at least one of the following steps:
  • the network side When the network side successfully decodes the data sent by the user equipment, the network side sends an acknowledgement ACK response message to the user equipment.
  • the network side fails to decode the data sent by the user equipment, and the network side does not successfully detect the conflict resolution user equipment identifier sent by the user equipment, the network side does not send a response message to the user equipment.
  • the network side When the network side fails to decode the data sent by the user equipment, and the network side successfully detects the conflict resolution user equipment identifier sent by the user equipment, the network side sends an unacknowledged NACK response message to the user equipment, and sends an uplink scheduling authorization to the user equipment. Information is used to retransmit data.
  • the network side When the network side sends an acknowledgement ACK response message to the user equipment, if the network side determines that there is still data in the user equipment buffer (Buffer) to be transmitted, the network side sends uplink scheduling authorization information to the user equipment for transmitting new data.
  • Buffer user equipment buffer
  • the method may further include: the network side periodically or by event triggering to update or reconfigure the pre-scheduling authorization information and the conflict resolution information sent to the user equipment.
  • the network side updates or reconfigures pre-scheduling authorization information and conflict resolution information sent to the user equipment according to information such as system load status, user location and state change, interference and radio channel quality change, and number of available time-frequency domain resources.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the above method.
  • FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present invention. As shown in FIG. 4, the data transmission method provided in this embodiment includes the following steps:
  • Step 21 The user equipment receives pre-scheduling authorization information and conflict resolution information sent by the network side.
  • the conflict resolution information includes codebook configuration information, where the codebook configuration information includes: codebook group information and sequence number information in the codebook group, and the codebook is a spread code having orthogonal or quasi-orthogonal characteristics.
  • the description of the codebook configuration information is the same as that of the previous embodiment, and therefore will not be described again.
  • Step 22 The user equipment sends data to the network side on the resource indicated by the pre-scheduling authorization information according to the codebook configuration information carried in the conflict resolution information.
  • the step 22 includes: the user equipment acquires or selects a spreading codebook according to the codebook configuration information carried in the conflict resolution information, and uses the spreading codebook to extend the original data, and then pre-schedules the authorization information.
  • the uplink data is sent on the indicated resource, and the conflict resolution user equipment identifier (UE ID) and/or the Buffer Status Report (BSR) information are sent or carried.
  • UE ID conflict resolution user equipment identifier
  • BSR Buffer Status Report
  • the user equipment sends a user equipment dedicated scheduling request (SR) signaling by using a Physical Uplink Control Channel (PUCCH), and the time-frequency resource location of the SR signaling corresponds to the user equipment identifier; or
  • SR user equipment dedicated scheduling request
  • PUCCH Physical Uplink Control Channel
  • the user equipment carries a mask uniquely corresponding to the user equipment identifier in the PUCCH or Physical Uplink Control Channel (PUSCH).
  • PUCCH Physical Uplink Control Channel
  • the method may further include: the user equipment receives the response feedback message sent by the network side, and confirms that the data transmission succeeds or fails according to the response feedback message.
  • the method may further include: when the user equipment still needs to transmit data in the buffer, and the user equipment receives the uplink authorization information sent by the network side, the uplink authorization resource indicated by the uplink authorization information Transfer new data or retransmit data.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions for performing the above method.
  • FIG. 5 is a flowchart of a data transmission method according to Embodiment 1 of the present invention. As shown in FIG. 5, this embodiment is described as follows:
  • Step 101 The network side (the base station eNB) sends Pre-Scheduling Grant information to the User Equipment (UE), and configures Collision Resolution (CR) for the user equipment.
  • UE User Equipment
  • CR Collision Resolution
  • the pre-scheduling authorization information includes a time-frequency location of the contention time allowed by the UE, and a modulation and coding mode of the data transmitted by the UE.
  • the conflict resolution information includes codebook configuration information.
  • FIG. 6 is a schematic diagram of a codebook according to Embodiment 1 of the present invention. As shown in FIG. 6, the available codebooks are grouped, and the intra-group sequences have better orthogonality, or are more advantageous for separating different UEs when the receiver demodulates, wherein the optional codebook is a complex-domain pseudo-random sequence. Code and so on.
  • the UEs When the code side is configured on the network side, the UEs are grouped, and the UEs with strong interference with each other are grouped into one group, and the same Code Group is configured.
  • the eNB may configure the codebook group information and the intra-group serial number information for each UE, or may only configure the codebook group information.
  • the UE When the eNB configures only the codebook group information for the UE, the UE randomly selects the intra-group serial number, and reports the intra-group serial number information to the eNB along with the data.
  • the data structure of the conflict resolution information is as shown in FIG. 7, and includes Code Group Info and Code Index in Group. Configuration information can be selected according to actual needs.
  • the pre-scheduling authorization information and the conflict resolution information can be sent in the following three ways:
  • Manner 1 The eNB sends pre-scheduling information and collision resolution information to the UE by using Downlink Control Information (DCI) on the Physical Downlink Control Channel (PDCCH).
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • the eNB may configure multiple pre-configurations for the UE. Scheduling and conflict resolution, distinguished by a dedicated T-RNTI identity;
  • the eNB sends the downlink grant information on the PDCCH, and the eNB receives the pre-scheduling grant information and the conflict resolution information on the physical downlink shared channel (PDSCH), and the eNB carries the special identifier carried in the PDCCH (for example, The CR-RNTI, the RNTI is carried in a mask on the CRC (Cyclic Redundancy Check), indicating that the PDCCH is a Media Access Control (MAC) control unit ( CE, Control Element) downlink authorization letter for data Interest, and the MAC CE is a special MAC CE carrying pre-scheduling information and conflict resolution information;
  • MAC Media Access Control
  • CE Control Element
  • Manner 3 The eNB sends pre-scheduling information and conflict resolution information to the UE through RRC (Radio Resource Control) connection configuration (Connection Reconfiguration) signaling.
  • RRC Radio Resource Control
  • the eNB updates or re-allocates the pre-scheduling authorization information and the conflict resolution information sent to the user equipment according to information such as system load status, user equipment location and state change, interference, and radio channel quality change.
  • the update or reconfiguration of the pre-scheduling authorization information and the conflict resolution information may be triggered by periodic triggering or event triggering.
  • Step 102 The UE receives the pre-scheduling authorization information and the conflict resolution information from the eNB. For example, in the case of the mode described in step 101, the UE identifies the pre-scheduling authorization information and the conflict resolution information by using the T-RNTI identifier; Upon arrival, the UE determines whether to adopt the new data transmission mode or the traditional LTE scheduling authorization data transmission mode according to the QoS (Quality of Service) requirements and the data volume size of the current service, when the service delay requirement is greater than When a threshold is specified and the amount of service data is less than another specified threshold, the UE decides to adopt a new data transmission mode on the authorized resource indicated by the pre-scheduling authorization information;
  • QoS Quality of Service
  • the UE sends the uplink data on the pre-scheduled authorization resource according to the configuration in the conflict resolution information, and simultaneously sends or carries the conflict resolution user equipment identifier (UE ID) and the BSR information.
  • UE ID conflict resolution user equipment identifier
  • the LTE system is used as an example, and the following manners are included:
  • Manner 1 The UE uses the Physical Uplink Control Channel (PUCCH) to transmit UE-specific SR signaling.
  • the time-frequency resource location of the SR signaling is in one-to-one correspondence with the UE.
  • the eNB can analyze the SR signaling to know which UEs need to be sent. Uplink data, and this mode is compatible with legacy LTE system scheduling grant signaling;
  • Manner 2 The PUCCH or the Physical Uplink Shared Channel (PUSCH) carries a mask uniquely corresponding to the UE ID, and the eNB detects the mask on the PUCCH or the PUSCH, and compares with the UE ID to learn which UEs Need to send uplink data.
  • PUSCH Physical Uplink Shared Channel
  • Step 103 The eNB receives the data from the UE, and feeds back a response message to the UE according to the decoding status, indicating that the data transmission succeeds or fails, and at the same time, determining whether there is still new data to be sent in the UE side buffer (Buffer), if there is new Data needs to be sent or data needs to be retransmitted, send uplink Scheduling the authorization information, where the uplink authorization information includes at least: a time-frequency resource location, and a modulation coding mode in which the user indicates the transmission mode.
  • the foregoing process is divided into the following cases:
  • the collision resolution UE ID is not successfully detected, but the data decoding is successful, and the eNB sends an acknowledgement ACK response message to the UE. If it is determined that there is still data to be transmitted in the Buffer of the UE side, the uplink scheduling grant information is sent at the same time. Transfer new data;
  • the eNB sends an acknowledgement ACK response message to the UE; if it is determined that there is still data to be sent in the UE side Buffer, the uplink scheduling grant information is sent for transmission at the same time.
  • New data
  • the eNB sends an unacknowledged NACK response message to the UE; meanwhile, the uplink scheduling grant information is sent to retransmit the data for adaptive retransmission.
  • Step 104 The UE receives the response feedback message from the eNB, and confirms that the data transmission succeeds or fails according to the response feedback message. If there is still data to be sent in the UE side buffer, the uplink authorization information from the eNB is received, and is indicated by the uplink authorization information. Send new data or retransmit data on the uplink authorization resource.
  • the embodiment of the present invention further provides a data transmission system, which is applied to a network side, and includes: a first sending module 81, configured to: send pre-scheduling authorization information and conflict resolution information to a user equipment;
  • the module 82 is configured to: receive data that is sent by the user equipment according to the codebook configuration information carried in the conflict resolution information on the resource indicated by the pre-scheduling authorization information.
  • the codebook configuration information includes: codebook group information and sequence number information in the codebook group, and the codebook is a spread code having orthogonal or quasi-orthogonal characteristics.
  • the system further includes: a configuration module 83, configured to: configure conflict resolution information for the user equipment.
  • the configuration module 83 is configured to: configure codebook group information and sequence number information in the codebook group for each user equipment; or configure codebook group information for each user equipment.
  • the configuration module 83 is further configured to: periodically or by triggering an event to trigger update or reconfiguration of pre-scheduling authorization information and conflict resolution information sent to the user equipment.
  • the first sending module 81 is configured to: send the pre-scheduling authorization information and the conflict resolution information to the user equipment, including any one of the following methods:
  • Pre-scheduling authorization information and conflict resolution information are sent to the user equipment through RRC Connection Reconfiguration signaling.
  • the first sending module 81 is further configured to perform at least one of the following steps:
  • the response message is not sent to the user equipment
  • the unacknowledged NACK response message is sent to the user equipment, and the uplink scheduling authorization information is sent to the user equipment for retransmitting the data.
  • the first sending module 81 is further configured to: when the ACK message is sent to the user equipment, if it is determined that there is still data in the buffer of the user equipment, the uplink scheduling authorization information is sent to the user equipment for transmitting new data. .
  • the embodiment of the present invention further provides a data transmission system, which is applied to a user equipment, and includes: a second receiving module 91, configured to: receive pre-scheduling authorization information and conflict resolution information sent by a network side;
  • the sending module 92 is configured to: send data to the network side on the resource indicated by the pre-scheduling authorization information according to the codebook configuration information carried in the conflict resolution information.
  • the codebook configuration information includes: codebook group information and sequence number information in the codebook group, and the codebook is a spread code having orthogonal or quasi-orthogonal characteristics.
  • the second sending module 92 is configured to: carry according to the conflict resolution information.
  • the codebook configuration information acquires or selects a spreading codebook, and uses the spreading codebook to extend the original data, and then sends uplink data on the resource indicated by the pre-scheduling authorization information, and sends or carries the conflict resolution user.
  • Device identification and/or cache status report information is configured to: carry according to the conflict resolution information.
  • the second sending module 92 is configured to:
  • the user equipment-specific SR signaling is sent by using the PUCCH, and the time-frequency resource location of the SR signaling is in one-to-one correspondence with the user equipment identifier; or
  • a mask uniquely corresponding to the user equipment identifier is carried in the PUCCH or the PUSCH.
  • the second receiving module 91 is further configured to receive a response feedback message sent by the network side, and confirm that the data transmission succeeds or fails according to the response feedback message.
  • the second sending module 92 is further configured to: when the user equipment still has data to be transmitted in the buffer, and the receiving module receives the uplink authorization information sent by the network side, where the uplink authorization information is indicated by the uplink authorization information. Transfer new data or retransmit data on the upstream authorized resource.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the embodiment of the invention shortens the uplink data transmission delay, and effectively solves the conflict problem caused by the resource competition of the multi-user equipment, thereby avoiding resource waste.

Abstract

本文公布一种数据传输方法及系统，包括：网络侧向用户设备发送预调度授权信息和冲突解决信息；网络侧接收用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送的数据。

Description

一种数据传输方法及系统 技术领域
本申请涉及但不限于无线通信领域。
背景技术
机器类通信(MTC，Machine Type Communication)被定义为网络中设备和另一实体之间的通信，或者设备之间的通信。通常，MTC不需要人的参与，因而也使得物联网(IoT，Internet of Things)成为可能。目前，随着传统业务增长出现瓶颈，业界和运营商对物联网的关注越来越高。
由于MTC巨大的商业价值，当前，第三代合作伙伴计划(3GPP，3rd Generation Partnership Project)通过对蜂窝网通信技术中的空口部分进行增强来支持IoT。3GPP在这个领域成立了多个工作组来进行研究，尤其是在长期演进(LTE，Long Term Evolution)R12版本中。
对于MTC，尤其需要考虑其业务需求和传统的人人(H2H，Human-to-Human)通信之间的不同。例如，在智能测量等应用中，通常是海量用户需要同时接入网络，每个设备的业务量很小，但是对于传输时延的要求较高。这种应用场景代表了MTC很典型的一些特性，引起了广泛关注和研究。对于这类海量用户、小数据包、低时延、节能等多种需求共同出现的应用场景，网络需要能提供更加有效的数据传输方式。
相关技术的LTE中，用户设备(UE，User Equipment)传输数据采用的是调度申请方式。图1为相关技术中采用调度申请方式的数据传输流程图。如图1所示，当UE完成连接后，处于业务间隙期间，网络预留一条专用的上行控制信道给UE，释放其他的物理信道资源。当UE需要发送上行数据时，在专用的物理上行控制信道(PUCCH，Physical Uplink Control Channel)上发送调度请求(SR，Scheduling Request)；网络侧(如基站eNB)收到后发送调度授权(SG，Scheduling Grant)信息给UE，然后UE在授权资源上进行上行数据传输。
用户设备传输数据的初始阶段，通常也需要用到竞争的资源。一种是UE在第一次接入到网络时进行随机接入，另一种情况是UE在已经接入网络后，在数据的间隙过程中可以进入休眠状态，以节省UE的电池开销和网络资源开销，当上行数据到达时UE处于“不同步”状态或没有可用的上行控制信道资源发送信令通知网络，以获取后续的上行传输资源。
对于MTC中小数据包、短时延的业务，为了减少传输时延，还可采用预调度资源的方式，即不管UE是否有数据，总是分配一个专用的数据信道给UE，当UE需要发送数据时，就可以在该专用数据信道上发送数据。然而，该方案的缺点是不管UE是否有上行数据传输，基站需要预留一部分专用资源给UE，如此，会造成资源浪费。
为了避免上述资源浪费，可以将上述专用数据信道改为竞争数据信道，实现基于竞争的传输，又称基于竞争(CB，Contention-Based)方式。上行资源在几个UE内共享，当UE的上行数据达到时，通过竞争发送数据。图2为相关技术中基于竞争方式的数据传输流程图。如图2所示，网络侧(如基站eNB)发送基于竞争资源的授权，UE接收后在竞争资源上进行上行数据传输。当业务负荷较少，共享竞争资源的UE数目较少时，可以取得较好的性能。
然而，该方案的问题在于当共享竞争资源的UE数目较多时，基站侧很难正确译码来自每个UE的数据，同时，基站侧无法区分接收失败是由于冲突还是由于传输质量问题而导致的，因此无法进行有效重传。例如，UE1和UE2同时在竞争资源上传输数据，基站侧无法正确译码来自UE1和UE2的数据，因此无法进行应答；或者，基站侧接收到UE1的数据，但是循环冗余校验(CRC，Cyclic Redundancy Check)校验失败，基站侧无法识别传输失败是由于冲突还是由于无线链路质量而导致的，如果采用传统的重传方式，则冲突继续存在，不仅浪费了无线资源，而且数据传输时延大大增加。相关技术通常的解决方案是采用无线链路控制(RLC，Radio Link Control)重传，但是，RLC重传会耗费较多的无线资源，同时对于数据传输时延也非常不利。
由此可见，相关技术方案虽然给出了基于竞争方式的数据传输的基本过程，但是对于冲突、数据传输错误等异常处理流程没有较好的解决方案。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
为了应对未来对高容量、低时延、海量连接提出的更高需求，相关技术提出采用新型多址接入复用方式，如基于非正交多用户信息理论的多用户共享接入(MUSA，Multi-User Shared Access)，稀疏码多址接入(SCMA，Sparse Code Multiple Access)等。通过设计复数域扩频码以及接收侧先进的多用户检测算法，让系统在相同时频资源上能支持数倍用户数量的高可靠接入；并且，可以简化接入流程中的资源调度过程，因而可简化海量接入的系统实现，缩短海量接入的接入时间，降低终端能耗。这些新型多址接入复用方式尤其适合解决数据传输中的冲突问题。然而，目前对于新型多址接入复用方式的讨论仍主要集中在物理层发送和接收方面，对于高层配置、信令流程以及如何与基于竞争方式的数据传输方法进行结合仍有待研究。
本文提供一种数据传输方法及系统，用来解决相关技术中多用户设备因资源竞争而产生的冲突问题。
一种数据传输方法，包括：网络侧向用户设备发送预调度授权信息和冲突解决信息；网络侧接收用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送的数据。
可选地，码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
可选地，所述网络侧向用户设备发送预调度授权信息和冲突解决信息之前，该方法还包括：网络侧为用户设备配置冲突解决信息。
可选地，所述网络侧为用户设备配置冲突解决信息包括：
网络侧为每个用户设备配置码本组信息和码本组内序号信息；或者，
网络侧为每个用户设备配置码本组信息。
可选地，该方法还包括：网络侧周期性或由触发事件触发更新或重新配 置发送给用户设备的预调度授权信息和冲突解决信息。
可选地，所述网络侧向用户设备发送预调度授权信息和冲突解决信息包括以下任一种或任几种方式：
网络侧通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)的一个或多个控制信令向用户设备发送预调度授权信息和冲突解决信息，并通过一个或多个标识信息指示所述预调度信息和冲突解决信息；
网络侧通过物理下行共享信道(PDSCH，Physical Downlink Shared Channel)向用户设备发送预调度授权信息和冲突解决信息，并通过物理下行控制信道发送携带下行授权信息的信令，并指示该下行授权信息为包含了冲突解决信息的介质访问控制层(MAC，Media Access Control)控制单元(CE，Control Element)的下行授权信息；
网络侧通过无线资源控制(RRC，Radio Resource Control)连接配置Connection Reconfiguration信令向用户设备发送预调度授权信息和冲突解决信息。
可选地，所述网络侧接收所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送的数据之后，该方法还包括以下至少一个步骤：
当网络侧成功译码用户设备发送的数据时，网络侧向用户设备发送确认ACK应答消息；或者，
当网络侧对用户设备发送的数据译码失败，且网络侧没有成功检测到用户设备发送的冲突解决用户设备标识时，网络侧不向用户设备发送应答消息；或者，
当网络侧对用户设备发送的数据译码失败，且网络侧成功检测到用户设备发送的冲突解决用户设备标识时，网络侧向用户设备发送未确认NACK应答消息，并向用户设备发送上行调度授权信息用于重传数据。
可选地，所述网络侧向用户设备发送确认ACK应答消息时，该方法还包括：若网络侧判断用户设备缓存内仍有数据需要传输时，网络侧向用户设备发送上行调度授权信息用于传输新数据。
一种数据传输方法，包括：用户设备接收网络侧发送的预调度授权信息和冲突解决信息；用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至网络侧。
可选地，码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
可选地，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧包括：
用户设备根据所述冲突解决信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在所述预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决用户设备(UE)标识(ID)和/或缓存状态报告(BSR，Buffer Status Report)信息。
可选地，所述用户设备根据所述冲突解决信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在所述预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决UE ID包括：
用户设备利用物理上行控制信道(PUCCH，Physical Uplink Control Channel)发送用户设备专用调度请求(SR)信令，且SR信令的时频资源位置与用户设备标识一一对应；或者，
用户设备在物理上行控制信道或物理上行共享信道(PUSCH，Physical Uplink Control Channel)中携带和UE ID唯一对应的掩码。
可选地，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧之后，该方法还包括：用户设备接收网络侧发送的应答反馈消息，根据所述应答反馈消息确认数据传输成功或失败。
可选地，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧之后，该方法还包括：当用户设备缓存内仍有数据需要传输，且用户设备接收到网络侧发送的上行授权信息时，在所述上行授权信息所指示的上行授权资源上传输新数 据或者重传数据。
一种数据传输系统，应用于网络侧，包括：第一发送模块，设置为：向用户设备发送预调度授权信息和冲突解决信息；第一接收模块，设置为：接收所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送的数据。
可选地，所述码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
可选地，该系统还包括：配置模块，设置为：为用户设备配置冲突解决信息。
可选地，所述配置模块，是设置为：
为每个用户设备配置码本组信息和码本组内序号信息；或者，
为每个用户设备配置码本组信息。
可选地，该系统还包括：配置模块，设置为：周期性或由触发事件触发更新或重新配置发送给用户设备的预调度授权信息和冲突解决信息。
可选地，所述第一发送模块，是设置为：向用户设备发送预调度授权信息和冲突解决信息包括以下任一种或任几种方式：
通过物理下行控制信道的一个或多个控制信令向用户设备发送预调度授权信息和冲突解决信息，并通过一个或多个标识信息指示所述预调度信息和冲突解决信息；
通过物理下行共享信道向用户设备发送预调度授权信息和冲突解决信息，并通过物理下行控制信道发送携带下行授权信息的信令，并指示该下行授权信息为包含了冲突解决信息的MAC CE的下行授权信息；
通过RRC Connection Reconfiguration信令向用户设备发送预调度授权信息和冲突解决信息。
可选地，所述第一发送模块，还设置为：执行以下至少一个步骤：
当成功译码用户设备发送的数据时，向用户设备发送确认ACK应答消息；
当对用户设备发送的数据译码失败，且没有成功检测到用户设备发送的冲突解决用户设备标识时，不向用户设备发送应答消息；
当对用户设备发送的数据译码失败，且成功检测到用户设备发送的冲突解决用户设备标识时，向用户设备发送未确认NACK应答消息，并向用户设备发送上行调度授权信息用于重传数据。
可选地，所述第一发送模块，还设置为：当向用户设备发送确认ACK应答消息时，若判断用户设备缓存内仍有数据需要传输时，向用户设备发送上行调度授权信息用于传输新数据。
一种数据传输系统，应用于用户设备，包括：第二接收模块，设置为：接收网络侧发送的预调度授权信息和冲突解决信息；第二发送模块，设置为：根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧。
可选地，所述码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
可选地，所述第二发送模块，是设置为：根据冲突解决信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在所述预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决UE ID和/或BSR信息。
可选地，所述第二发送模块，是设置为：
利用PUCCH发送用户设备专用SR信令，且SR信令的时频资源位置与用户设备标识一一对应；或者，
在PUCCH或PUSCH中携带和UE ID唯一对应的掩码。
可选地，所述第二接收模块，还设置为：接收网络侧发送的应答反馈消息，根据所述应答反馈消息确认数据传输成功或失败。
可选地，所述第二发送模块，还设置为：当用户设备缓存内仍有数据需要传输，且接收模块接收到网络侧发送的上行授权信息时，在所述上行授权信息所指示的上行授权资源上传输新数据或者重传数据。
一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执 行指令用于执行上述任一项的方法。
在本发明实施例中，网络侧向用户设备发送预调度授权信息和冲突解决信息；网络侧接收用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送的数据。通过本发明实施例，缩短了上行数据发送时延，同时，有效解决了多用户设备因为资源竞争而产生的冲突问题，避免了资源浪费。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为相关技术中采用调度申请方式的数据传输流程图；
图2为相关技术中基于竞争方式的数据传输流程图；
图3为本发明实施例提供的数据传输方法的流程图；
图4为本发明实施例提供的数据传输方法的流程图；
图5为本发明实施例一提供的数据传输方法的流程图；
图6为本发明实施例一提供的码本示意图；
图7为本发明实施例一提供的冲突解决信息的数据结构示意图；
图8为本发明实施例提供的数据传输系统的示意图(应用于网络侧)；
图9为本发明实施例提供的数据传输系统的示意图(应用于用户设备)。
本发明的实施方式
以下结合附图对本发明的实施方式进行详细说明。
图3为本发明实施例提供的数据传输方法的流程图。如图3所示，本实施例提供的数据传输方法包括以下步骤：
步骤11：网络侧向用户设备发送预调度授权信息和冲突解决信息。
于步骤11之前，该方法还包括：网络侧为用户设备配置冲突解决信 息。
其中，冲突解决信息包括码本配置信息，码本配置信息包括：码本组信息和码本组内序号信息。于此，码本为扩频码，如复数域伪随机序列、低密度扩频码等，具有正交或准正交性特性，网络侧采用先进的接收机技术，能够有效区分来自不同用户设备的数据。网络侧将所有可用码本进行分组，其中，按照码本的自相关和互相关特性进行分组，自相关和互相关特性较好的码本分为一组。网络侧根据系统负荷、用户上下文信息、干扰和无线信道质量状态、可用时频域资源数目等信息确定用户设备的码本配置信息。
于此，网络侧为用户设备配置冲突解决信息包括：
网络侧为每个用户设备配置码本组信息和码本组内序号信息；或者，
网络侧为每个用户设备配置码本组信息。
其中，当网络侧为每个用户设备配置码本组信息和码本组内序号信息时，用户设备获得该信息之后，直接得到原始码本，采用该码本进行扩频处理后发送数据；当网络侧为每个用户设备配置码本组信息时，用户设备获得该信息之后，在该码本组内选择一个码本，并采用该码本进行扩频处理后发送数据。
于此，步骤11包括以下任一种或任几种方式：
网络侧通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)的一个或多个控制信令向用户设备发送预调度授权信息和冲突解决信息，并通过一个或多个标识信息指示控制信令中的信息为预调度授权信息和冲突解决信息；其中，预调度授权信息和冲突解决信息可以放置在同一个控制信令中，也可以分成多个控制信令分别发送，并用不同的标识信息进行区分和识别；
网络侧通过物理下行共享信道(PDSCH，Physical Downlink Shared Channel)向用户设备发送预调度授权信息和冲突解决信息，并通过物理下行控制信道发送携带下行授权信息的信令，并指示该下行授权信息为包含了冲突解决信息的介质访问控制层(MAC，Media Access Control)控制单元(CE，Control Element)的下行授权信息；
网络侧通过无线资源控制(RRC，Radio Resource Control)信令向用户设备发送预调度授权信息和冲突解决信息，例如，通过RRC连接配置(Connection Reconfiguration)信令进行发送。
步骤12：网络侧接收用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送的数据。
于此，步骤12之后，该方法还可包括以下至少一个步骤：
当网络侧成功译码用户设备发送的数据时，网络侧向用户设备发送确认ACK应答消息；
当网络侧对用户设备发送的数据译码失败，且网络侧没有成功检测到用户设备发送的冲突解决用户设备标识时，网络侧不向用户设备发送应答消息；
当网络侧对用户设备发送的数据译码失败，且网络侧成功检测到用户设备发送的冲突解决用户设备标识时，网络侧向用户设备发送未确认NACK应答消息，并向用户设备发送上行调度授权信息用于重传数据。
其中，当网络侧向用户设备发送确认ACK应答消息时，若网络侧判断用户设备缓存(Buffer)内仍有数据需要传输时，网络侧向用户设备发送上行调度授权信息用于传输新数据。
此外，该方法还可包括：网络侧周期性或由事件触发更新或重新配置发送给用户设备的预调度授权信息和冲突解决信息。其中，网络侧根据系统负荷状态、用户位置和状态变化、干扰和无线信道质量变换、可用时频域资源数目等信息，更新或重配发送给用户设备的预调度授权信息和冲突解决信息。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
图4为本发明实施例提供的数据传输方法的流程图。如图4所示，本实施例提供的数据传输方法包括以下步骤：
步骤21：用户设备接收网络侧发送的预调度授权信息和冲突解决信息。
其中，冲突解决信息包括码本配置信息，码本配置信息包括：码本组信息和码本组内序号信息，码本为具有正交或准正交特性的扩频码。关于码本配置信息的描述同上一实施例所述，故于此不再赘述。
步骤22：用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送数据至网络侧。
于此，步骤22包括：用户设备根据冲突解决信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决用户设备标识(UE ID)和/或缓存状态报告(BSR，Buffer Status Report)信息。其中，上述过程包括：
用户设备利用物理上行控制信道(PUCCH，Physical Uplink Control Channel)发送用户设备专用调度请求(SR)信令，且SR信令的时频资源位置与用户设备标识一一对应；或者，
用户设备在PUCCH或物理上行共享信道(PUSCH，Physical Uplink Control Channel)中携带和用户设备标识唯一对应的掩码。
于此，步骤22之后，该方法还可包括：用户设备接收网络侧发送的应答反馈消息，根据所述应答反馈消息确认数据传输成功或失败。
于此，步骤22之后，该方法还可包括：当用户设备缓存内仍有数据需要传输，且用户设备接收到网络侧发送的上行授权信息时，在所述上行授权信息所指示的上行授权资源上传输新数据或者重传数据。
本发明实施例还提供一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行上述的方法。
图5为本发明实施例一提供的数据传输方法的流程图。如图5所示，本实施例描述如下：
步骤101：网络侧(基站eNB)向用户设备(UE)发送预调度授权(Pre-Scheduling Grant)信息，同时，为用户设备配置冲突解决信息(CR，Collision Resolution)。
其中，预调度授权信息中包括UE允许使用的竞争资源时频位置，以及UE发送数据的调制编码方式等。
冲突解决信息包括码本配置信息。图6为本发明实施例一提供的码本示意图。如图6所示，将可用码本进行分组，组内序列具有较好的正交性，或者更有利于接收机解调时分离不同UE，其中，可选的码本如复数域伪随机序列码等。假设两组伪随机码序列A＝{x1,x2,...,xn}和B＝{y1,y2,...,ym}，其中xi为长度N的序列，i＝1,2,...,n；yj为长度M的序列，j＝1,2,...m；组A中序列xi具有较好的自相关性和互相关性；B中序列yj具有较好的自相关性和互相关性。
网络侧配置码本信息时，对UE进行分组，相互有较强干扰的UE分为一组，配置相同的码本组(Code Group)。例如，eNB可以为每个UE配置码本组信息和组内序列号信息，也可以仅配置码本组信息。当eNB为UE仅配置码本组信息时，UE随机选取组内序列号，并将组内序列号信息随着数据一起上报给eNB。
冲突解决信息的数据结构如图7所示，包括码本组信息(Code Group Info)、码本组内序列号信息(Code Index in Group)。配置信息可根据实际需要选择。
于此，以长期演进(LTE，Long Term Evolution)系统为例，可通过以下三种方式发送预调度授权信息和冲突解决信息：
方式一：eNB通过物理下行控制信道(PDCCH，Physical Downlink Control Channel)上的下行控制信息(DCI，Downlink Control Information)向UE发送预调度信息和冲突解决信息，其中，eNB可以为UE配置多个预调度和冲突解决方案，通过专用的T-RNTI标识来进行区分；
方式二：eNB在PDCCH上发送下行授权信息，指示UE在物理下行共享信道(PDSCH，Physical Downlink Shared Channel)上接收预调度授权信息和冲突解决信息，同时，eNB通过PDCCH中携带的特殊标识(如CR-RNTI，该RNTI通过掩码的方式携带在PDCCH的循环冗余校验码(CRC，Cyclic Redundancy Check)上)指示PDCCH上发送的为介质访问控制层(MAC，Media Access Control)控制单元(CE，Control Element)数据的下行授权信 息，且该MAC CE为携带了预调度信息和冲突解决信息的特殊的MAC CE；
方式三：eNB通过无线资源控制(RRC，Radio Resource Control)连接配置(Connection Reconfiguration)信令向UE发送预调度信息和冲突解决信息。
于此，eNB根据系统负荷状态、用户设备位置和状态变化、干扰和无线信道质量变换等信息，更新或重配发送给用户设备的预调度授权信息和冲突解决信息。其中，预调度授权信息和冲突解决信息的更新或重配可采用周期性触发或事件性触发。
步骤102：UE接收来自eNB的预调度授权信息和冲突解决信息，例如，在步骤101所述的方式一情况下，UE通过T-RNTI标识来识别预调度授权信息和冲突解决信息；当上行数据到达时，UE根据当前业务的服务质量(QoS，Quality of Service)要求、数据量大小等信息，判断是采用新的数据传输方式还是采用传统LTE调度授权的数据传输方式，当业务时延要求大于一指定门限，且业务数据量小于另一指定门限时，UE决定在预调度授权信息所指示的授权资源上采用新的数据传输方式；
UE根据冲突解决信息中的配置在预调度授权资源上发送上行数据，同时发送或携带冲突解决用户设备标识(UE ID)和BSR信息，以LTE系统为例，包括以下方式：
方式一：UE利用物理上行控制信道(PUCCH，Physical Uplink Control Channel)发送UE专用SR信令，SR信令的时频资源位置和UE一一对应，eNB解析SR信令即可获知哪些UE需要发送上行数据，且这种方式和传统LTE系统调度授权信令兼容；
方式二：在PUCCH或物理上行共享信道(PUSCH，Physical Uplink Shared Channel)中携带和UE ID唯一对应的掩码，eNB检测到PUCCH或PUSCH上的掩码，并和UE ID进行对比以获知哪些UE需要发送上行数据。
步骤103：eNB接收来自UE的数据，并根据译码状态向UE反馈应答消息，指示数据传输成功或失败，同时，判断UE侧缓存(Buffer)内是否仍有新的数据需要发送，若有新的数据需要发送或者有数据需要重传，发送上行 调度授权信息，其中，上行授权信息至少包括：时频资源位置、用户指示发送方式的调制编码方式，于此，上述过程分为以下几种情况：
(1)没有成功检测到冲突解决UE ID，但数据译码成功，eNB向UE发送确认ACK应答消息；如判断UE侧Buffer内仍有数据需要发送，在相同时刻，发送上行调度授权信息用于传输新的数据；
(2)没有成功检测到冲突解决UE ID，且数据译码失败，eNB不发送应答消息；
(3)成功检测到冲突解决UE ID，且数据译码成功，eNB向UE发送确认ACK应答消息；如判断UE侧Buffer内仍有数据需要发送，在相同时刻，发送上行调度授权信息用于传输新数据；
(4)成功检测到冲突解决UE ID，但数据译码失败，eNB向UE发送未确认NACK应答消息；同时，发送上行调度授权信息用于重传数据，进行自适应重传。
步骤104：UE接收来自eNB的应答反馈消息，根据应答反馈消息确认数据传输成功或失败，如果UE侧Buffer内仍有数据需要发送，接收来自eNB的上行授权信息，并在上行授权信息所指示的上行授权资源上发送新数据或者重传数据。
如图8所示，本发明实施例还提供一种数据传输系统，应用于网络侧，包括：第一发送模块81，设置为：向用户设备发送预调度授权信息和冲突解决信息；第一接收模块82，设置为：接收用户设备根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送的数据。
其中，码本配置信息包括：码本组信息和码本组内序号信息，码本为具有正交或准正交特性的扩频码。
于一实施例中，该系统还包括：配置模块83，设置为：为用户设备配置冲突解决信息。配置模块83，是设置为：为每个用户设备配置码本组信息和码本组内序号信息；或者，为每个用户设备配置码本组信息。
于一实施例中，配置模块83，还设置为：周期性或由触发事件触发更新或重新配置发送给用户设备的预调度授权信息和冲突解决信息。
于一实施例中，第一发送模块81，设置为：向用户设备发送预调度授权信息和冲突解决信息包括以下任一种或任几种方式：：
通过物理下行控制信道的一个或多个控制信令向用户设备发送预调度授权信息和冲突解决信息，并通过一个或多个标识信息指示所述预调度信息和冲突解决信息；
通过物理下行共享信道向用户设备发送预调度授权信息和冲突解决信息，并通过物理下行控制信道发送携带下行授权信息的信令，并指示该下行授权信息为包含了冲突解决信息的MAC CE的下行授权信息；
通过RRC Connection Reconfiguration信令向用户设备发送预调度授权信息和冲突解决信息。
于一实施例中，第一发送模块81，还设置为：执行以下至少一个步骤：
当成功译码用户设备发送的数据时，向用户设备发送确认ACK应答消息；
当对用户设备发送的数据译码失败，且没有成功检测到用户设备发送的冲突解决用户设备标识时，不向用户设备发送应答消息；
当对用户设备发送的数据译码失败，且成功检测到用户设备发送的冲突解决用户设备标识时，向用户设备发送未确认NACK应答消息，并向用户设备发送上行调度授权信息用于重传数据。
其中，第一发送模块81，还设置为：当向用户设备发送确认ACK应答消息时，若判断用户设备的缓存内仍有数据需要传输时，向用户设备发送上行调度授权信息用于传输新数据。
如图9所示，本发明实施例还提供一种数据传输系统，应用于用户设备，包括：第二接收模块91，设置为：接收网络侧发送的预调度授权信息和冲突解决信息；第二发送模块92，设置为：根据冲突解决信息中携带的码本配置信息在预调度授权信息所指示的资源上发送数据至网络侧。
其中，码本配置信息包括：码本组信息和码本组内序号信息，码本为具有正交或准正交特性的扩频码。
于一实施例中，第二发送模块92，是设置为：根据冲突解决信息中携带 的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决用户设备标识和/或缓存状态报告信息。
其中，第二发送模块92，是设置为：
利用PUCCH发送用户设备专用SR信令，且SR信令的时频资源位置与用户设备标识一一对应；或者，
在PUCCH或PUSCH中携带和用户设备标识唯一对应的掩码。
于一实施例中，第二接收模块91，还设置为接收网络侧发送的应答反馈消息，根据所述应答反馈消息确认数据传输成功或失败。
于一实施例中，第二发送模块92，还设置为：当用户设备缓存内仍有数据需要传输，且接收模块接收到网络侧发送的上行授权信息时，在所述上行授权信息所指示的上行授权资源上传输新数据或者重传数据。
此外，上述系统的处理流程同上述方法所述，故于此不再赘述。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
通过本发明实施例，缩短了上行数据发送时延，而且有效解决了多用户设备因为资源竞争而产生的冲突问题，避免了资源浪费。

Claims (17)

  1. 一种数据传输方法，包括：
    网络侧向用户设备发送预调度授权信息和冲突解决信息；
    所述网络侧接收所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送的数据。
  2. 如权利要求1所述的方法，其中，所述码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
  3. 如权利要求1所述的方法，其中：所述网络侧向用户设备发送预调度授权信息和冲突解决信息之前，还包括：网络侧为所述用户设备配置冲突解决信息。
  4. 如权利要求3所述的方法，其中，所述网络侧为所述用户设备配置冲突解决信息包括：
    网络侧为每个用户设备配置码本组信息和码本组内序号信息；或者，
    网络侧为每个用户设备配置码本组信息。
  5. 如权利要求1所述的方法，还包括：网络侧周期性或由触发事件触发更新或重新配置发送给用户设备的预调度授权信息和冲突解决信息。
  6. 如权利要求1所述的方法，其中，所述网络侧向用户设备发送预调度授权信息和冲突解决信息包括以下任一种或任几种方式：
    网络侧通过物理下行控制信道PDCCH的一个或多个控制信令向用户设备发送预调度授权信息和冲突解决信息，并通过一个或多个标识信息指示所述预调度信息和冲突解决信息；
    网络侧通过物理下行共享信道PDSCH向用户设备发送预调度授权信息和冲突解决信息，并通过物理下行控制信道PDCCH发送携带下行授权信息的信令，并指示该下行授权信息为包含了冲突解决信息的介质访问控制层MAC控制单元CE的下行授权信息；
    网络侧通过无线资源控制RRC连接配置Connection Reconfiguration信令向用户设备发送预调度授权信息和冲突解决信息。
  7. 如权利要求1所述的方法，其中，所述网络侧接收所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送的数据之后，还包括以下至少一个步骤：
    当网络侧成功译码用户设备发送的数据时，网络侧向用户设备发送确认ACK应答消息；或者，
    当网络侧对用户设备发送的数据译码失败，且网络侧没有成功检测到用户设备发送的冲突解决用户设备标识时，网络侧不向用户设备发送应答消息；或者，
    当网络侧对用户设备发送的数据译码失败，且网络侧成功检测到用户设备发送的冲突解决用户设备标识时，网络侧向用户设备发送未确认NACK应答消息，并向用户设备发送上行调度授权信息用于重传数据。
  8. 如权利要求7所述的方法，其中，所述网络侧向用户设备发送确认ACK应答消息时，还包括：若网络侧判断用户设备缓存内仍有数据需要传输时，网络侧向用户设备发送上行调度授权信息用于传输新数据。
  9. 一种数据传输方法，包括：
    用户设备接收网络侧发送的预调度授权信息和冲突解决信息；
    所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧。
  10. 如权利要求9所述的方法，其中，所述码本配置信息包括：码本组信息和码本组内序号信息，所述码本为具有正交或准正交特性的扩频码。
  11. 如权利要求9所述的方法，其中，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧包括：
    用户设备根据所述冲突解决信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在所述预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决用户设备UE标识ID和/或缓存状态报告BSR信息。
  12. 如权利要求11所述的方法，其中，所述用户设备根据所述冲突解决 信息中携带的码本配置信息，获取或选择一个扩频码本，并采用该扩频码本对原始数据进行扩展后，在所述预调度授权信息所指示的资源上发送上行数据，并发送或携带冲突解决UE ID包括：
    用户设备利用物理上行控制信道PUCCH发送用户设备专用调度请求SR信令，且SR信令的时频资源位置与用户设备标识一一对应；或者，
    用户设备在物理上行控制信道PUCCH或物理上行共享信道PUSCH中携带和UE ID唯一对应的掩码。
  13. 如权利要求9所述的方法，其中，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧之后，还包括：用户设备接收网络侧发送的应答反馈消息，根据所述应答反馈消息确认数据传输成功或失败。
  14. 如权利要求9所述的方法，其中，所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧之后，还包括：当用户设备缓存内仍有数据需要传输，且用户设备接收到网络侧发送的上行授权信息时，在所述上行授权信息所指示的上行授权资源上传输新数据或者重传数据。
  15. 一种数据传输系统，应用于网络侧，包括：
    第一发送模块，设置为：向用户设备发送预调度授权信息和冲突解决信息；
    第一接收模块，设置为：接收所述用户设备根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送的数据。
  16. 一种数据传输系统，应用于用户设备，包括：
    第二接收模块，设置为：接收网络侧发送的预调度授权信息和冲突解决信息；
    第二发送模块，设置为：根据所述冲突解决信息中携带的码本配置信息在所述预调度授权信息所指示的资源上发送数据至所述网络侧。
  17. 一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令用于执行权利要求1-14任一项的方法。
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