WO2021098640A1 - 一种数据包的发送、接收方法及装置 - Google Patents

一种数据包的发送、接收方法及装置 Download PDF

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Publication number
WO2021098640A1
WO2021098640A1 PCT/CN2020/129032 CN2020129032W WO2021098640A1 WO 2021098640 A1 WO2021098640 A1 WO 2021098640A1 CN 2020129032 W CN2020129032 W CN 2020129032W WO 2021098640 A1 WO2021098640 A1 WO 2021098640A1
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WO
WIPO (PCT)
Prior art keywords
data packet
index
message
data
terminal
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PCT/CN2020/129032
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English (en)
French (fr)
Inventor
刘旭
戴博
沙秀斌
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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 EP20889589.6A priority Critical patent/EP4064755A4/en
Priority to US17/777,444 priority patent/US20220408309A1/en
Publication of WO2021098640A1 publication Critical patent/WO2021098640A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • 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
    • H04L1/1896—ARQ related signaling
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092—Error control systems characterised by the topology of the transmission link
    • H04L2001/0093—Point-to-multipoint
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present disclosure relates to the field of communications, and in particular, to a method and device for sending and receiving data packets.
  • the transmission object of a data packet is multiple UEs.
  • the network needs to retransmit according to the predefined number of repetitions. The same packet.
  • the data packet may have been received before the maximum number of repetitions arrives.
  • the UE does not know whether the next data packet to be transmitted is a new data packet or a retransmission. Data packets are transmitted. Therefore, for an individual UE, it may still continue to receive data packets that have been successfully received, which will adversely affect the power consumption of the terminal.
  • the embodiment of the present invention provides a method and device for sending and receiving data packets, so as to at least solve the problem of high power consumption of the terminal caused by repeated data packet reception in the related art.
  • a method for sending a data packet including:
  • Send a first message to the terminal where the first message at least indicates the first index of the first data packet to be sent; send the first data packet to the terminal, and the first data packet is used to indicate the When the first index is the same as the second index of the second data packet that the terminal has received, the terminal abandons receiving the first data packet, wherein the same data packet is configured with the same index.
  • a method for receiving a data packet including:
  • a first message is received, where the first message at least indicates the first index of the first data packet to be received; in the case that the first index is the same as the second index of the second data packet that has been received, Abandon receiving the first data packet, wherein the same data packet is configured with the same index.
  • an apparatus for sending a data packet including:
  • a first sending module configured to send a first message to the terminal, where the first message at least indicates the first index of the first data packet to be sent;
  • the second sending module is configured to send the first data packet to the terminal, where the first data packet is used to indicate that the terminal is at the first index and the second index of the second data packet that the terminal has received In the same situation, the receiving of the first data packet is abandoned, wherein the same data packet is configured with the same index.
  • an apparatus for receiving a data packet including:
  • the first receiving module is configured to receive a first message, where the first message at least indicates a first index of a first data packet to be received;
  • the abandoning module is configured to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that has been received, wherein the same data packet is configured with the same index.
  • a network system including a base station and a terminal, wherein the base station is configured to send a first message to the terminal, and the first message at least indicates a first data packet to be sent The first index; the terminal is set to receive the first message, and, in the case that the first index is the same as the second index of the second data packet that the terminal has already received, give up receiving the first A data packet in which the same data packet is configured with the same index.
  • a computer-readable storage medium wherein a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute any one of the foregoing when running. The steps in the method embodiment.
  • an electronic device including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute any of the above Steps in the method embodiment.
  • FIG. 1 is a block diagram of the hardware structure of a base station of a method for sending a data packet according to an embodiment of the present invention
  • Fig. 2 is a flowchart of a method for sending a data packet according to an embodiment of the present invention
  • Fig. 3 is a flowchart of a method for receiving a data packet according to an embodiment of the present invention
  • FIG. 4 is a structural block diagram of a device for sending data packets according to an embodiment of the present invention.
  • Fig. 5 is a structural block diagram of a device for receiving a data packet according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a flow of data packet transmission according to an optional embodiment of the present disclosure.
  • Fig. 7 is a schematic diagram of a flow of data packet transmission according to another optional embodiment of the present disclosure.
  • FIG. 1 is a hardware structural block diagram of a base station in a method for sending a data packet according to an embodiment of the present invention.
  • the base station 10 may include one or more (only one is shown in FIG. 1) processor 102 (the processor 102 may include, but is not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) And the memory 104 for storing data.
  • the above-mentioned base station may also include a transmission device 106 and an input/output device 108 for communication functions.
  • FIG. 1 is only for illustration, and does not limit the structure of the above-mentioned base station.
  • the base station 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration from that shown in FIG.
  • the memory 104 may be used to store computer programs, for example, software programs and modules of application software, such as the computer programs corresponding to the method for sending data packets in the embodiment of the present invention.
  • the processor 102 runs the computer programs stored in the memory 104, thereby Perform various functional applications and data processing, that is, realize the above-mentioned methods.
  • the memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory.
  • the memory 104 may further include a memory remotely provided with respect to the processor 102, and these remote memories may be connected to the base station 10 through a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.
  • the transmission device 106 is used to receive or send data via a network.
  • the above-mentioned specific example of the network may include a wireless network provided by the communication provider of the base station 10.
  • the transmission device 106 includes a network adapter (Network Interface Controller, NIC for short), which can be connected to other network devices through a base station to communicate with the Internet.
  • the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet in a wireless manner.
  • RF radio frequency
  • FIG. 2 is a flowchart of a method for sending data packets according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:
  • Step S202 Send a first message to the terminal, where the first message at least indicates the first index of the first data packet to be sent;
  • Step S204 Send a first data packet to the terminal, where the first data packet is used to instruct the terminal to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that the terminal has received, where: The same data packet is configured with the same index.
  • the first data packet is sent to the terminal, and the first data packet is used to indicate that the terminal is in the first If an index is the same as the second index of the second data packet that the terminal has received, the first data packet is discarded.
  • the same data packet is configured with the same index, which solves the problem of repeated reception of data packets in the related art.
  • the resulting problem of higher power consumption of the terminal reduces the power consumption of the terminal.
  • the execution subject of the foregoing steps may be a base station or the like, but is not limited thereto.
  • the method further includes: sending a data packet according to a data transmission period, wherein the specified data packet in the data packet is configured to perform a new transmission and at least one retransmission within a specified data transmission period.
  • the first message also indicates at least one of the following: the total number of data packets to be transmitted, the data transmission period, the number of retransmissions of the specified data packet, the new transmission time domain interval of the specified data packet, and the retransmission of the specified data packet. Pass the time domain interval.
  • the terminal can receive data packets according to the data transmission cycle.
  • these four different data packets can be pre-configured to be sent within the specified data transmission period, where each data packet is configured to be transmitted once And retransmit again.
  • these four data packets can be transmitted once in a unified order, and then retransmitted again.
  • the index configured for each data packet in the new transmission process and the retransmission process is unique, and at the end of the data transmission cycle, that is, the four different After all the data packets are transmitted, you can restart a data transmission cycle to transmit a new data packet. In the restarted data transmission cycle, you can use the index that has been used to distinguish different data packets, or you can use The new index that has not been used before distinguishes different data packets.
  • the first message also indicates data transmission stop information, where the stop information includes at least one of the following: the type of service to be stopped, and the time domain interval in which the transmission is stopped.
  • the first message is downlink control information or control channel configuration message.
  • the method further includes sending a second message to the terminal, where the second message indicates the total number of data packets to be transmitted in the specified data transmission period, and/or the index of the data packets in the specified data transmission period.
  • the first message may be downlink control information
  • the second message may be a control channel configuration message
  • FIG. 3 is a flowchart of a method for receiving a data packet according to an embodiment of the present invention. As shown in FIG. 3, it includes:
  • Step S301 Receive a first message, where the first message at least indicates the first index of the first data packet to be received;
  • Step S303 in the case where the first index is the same as the second index of the second data packet that has been received, abandon receiving the first data packet, wherein the same data packet is configured with the same index.
  • the first message since the first message is received, where the first message at least indicates the first index of the first data packet to be received, in the case that the first index is the same as the second index of the second data packet that has been received , Give up receiving the first data packet, where the same data packet is configured with the same index, which solves the problem of high power consumption of the terminal caused by repeatedly receiving data packets in the related art, and reduces the power consumption of the terminal.
  • the method further includes: receiving a data packet according to a data transmission period, wherein a specified data packet in the data packet is configured to perform a new transmission and at least one retransmission within a specified data transmission period.
  • the first message also indicates at least one of the following: the total number of data packets to be transmitted, the data transmission period, the number of retransmissions of the specified data packet, the new transmission time domain interval of the specified data packet, and the retransmission of the specified data packet. Pass the time domain interval.
  • the first message also indicates data transmission stop information, where the stop information includes at least one of the following: the type of service to be stopped, and the time domain interval in which the transmission is stopped.
  • the first message is downlink control information and/or control channel configuration message.
  • the method further includes: receiving a second message, where the second message indicates the total number of data packets to be transmitted in the specified data transmission period, and/or the index of the data packets in the specified data transmission period.
  • the first message may be downlink control information
  • the second message may be a control channel configuration message.
  • the method according to the above embodiment can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is Better implementation.
  • the technical solution of the present disclosure essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) execute the methods described in the various embodiments of the present disclosure.
  • a device for sending data packets is also provided.
  • the device is used to implement the above-mentioned embodiments and preferred implementations, and those that have been described will not be repeated.
  • the term "module" can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • Fig. 4 is a structural block diagram of a device for sending a data packet according to an embodiment of the present invention. As shown in Fig. 4, the device includes:
  • the first sending module 42 is configured to send a first message to the terminal, where the first message at least indicates the first index of the first data packet to be sent;
  • the second sending module 44 is configured to send the first data packet to the terminal.
  • the first data packet is used to instruct the terminal to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that the terminal has received.
  • the first data packet is sent to the terminal, and the first data packet is used to indicate that the terminal is in the If an index is the same as the second index of the second data packet that the terminal has received, the first data packet is discarded.
  • the same data packet is configured with the same index, which solves the problem of repeated reception of data packets in the related art. The resulting problem of higher power consumption of the terminal reduces the power consumption of the terminal.
  • the device further includes: a transmission module configured to send data packets according to a data transmission cycle, wherein a specified data packet in the data packet is configured to perform a new transmission and at least one retransmission within a specified data transmission cycle.
  • a transmission module configured to send data packets according to a data transmission cycle, wherein a specified data packet in the data packet is configured to perform a new transmission and at least one retransmission within a specified data transmission cycle.
  • the device further includes: a third sending module configured to send a second message to the terminal, where the second message indicates the total number of data packets to be transmitted in a specified data transmission period.
  • a third sending module configured to send a second message to the terminal, where the second message indicates the total number of data packets to be transmitted in a specified data transmission period.
  • a device for receiving data packets is also provided.
  • the device is used to implement the above-mentioned embodiments and preferred implementations, and those that have been described will not be repeated.
  • the term "module" can implement a combination of software and/or hardware with predetermined functions.
  • the devices described in the following embodiments are preferably implemented by software, implementation by hardware or a combination of software and hardware is also possible and conceived.
  • the receiving device may be a terminal.
  • Fig. 5 is a structural block diagram of a device for receiving a data packet according to an embodiment of the present invention. As shown in Fig. 5, the device includes:
  • the first receiving module 51 is configured to receive a first message, where the first message at least indicates the first index of the first data packet to be received;
  • the abandoning module 53 is configured to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that has been received, wherein the same data packet is configured with the same index.
  • the first message since the first message is received, the first message at least indicates the first index of the first data packet to be received, in the case that the first index is the same as the second index of the second data packet that has been received , Give up receiving the first data packet, where the same data packet is configured with the same index, which solves the problem of high power consumption of the terminal caused by repeatedly receiving data packets in the related art, and reduces the power consumption of the terminal.
  • the device further includes: a second receiving module configured to receive data packets according to a data transmission cycle, wherein the specified data packet in the data packet is configured to perform a new transmission and at least one transmission within a specified data transmission cycle. Retransmission.
  • a second receiving module configured to receive data packets according to a data transmission cycle, wherein the specified data packet in the data packet is configured to perform a new transmission and at least one transmission within a specified data transmission cycle. Retransmission.
  • the device further includes: a third receiving module configured to receive a second message, where the second message indicates the total number of data packets to be transmitted in a specified data transmission period.
  • the first message may be downlink control information
  • the second message may be a control channel configuration message.
  • each of the above modules can be implemented by software or hardware.
  • it can be implemented in the following manner, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination.
  • the forms are located in different processors.
  • This embodiment also provides a network system, including a base station and a terminal, wherein the base station is configured to send a first message to the terminal, and the first message at least indicates a first index of a first data packet to be sent;
  • the terminal is set to receive the first message, and if the first index is the same as the second index of the second data packet that the terminal has already received, it will give up receiving the first data packet, where the same data packet is configured with the same index.
  • Broadcast services can be provided for Universal Mobile Telecommunications System (UMTS) through a cellular network.
  • UMTS Universal Mobile Telecommunications System
  • MBSFN Multicast-Broadcast Single Frequency Network
  • SC-PTM Single CellPoint-To- Multipoint
  • SIB20 System Information Block, SIB20-NB
  • SC-MCCH Single Cell Multicast Control channel
  • SC-MTCH Single Cell Multicast Transmission channel
  • the SC-MCCH and SC-MTCH are dynamically scheduled on the Physical Downlink Control Channel (PDCCH). If the SC-MCCH message is invalid/changed, the DCI can be used to indicate the change on the physical downlink control channel (PDCCH).
  • the UE can determine to start receiving a new SC according to the SC-MCCH modification period in SIB20 and other related configurations.
  • -MCCH message Regarding SC-PTM transmission, SC-PTM-related control information (including SC-MTCH scheduling information) can be configured semi-statically through SC-MCCH. Generally speaking, SC-MCCH will only be changed when a new MBMS service occurs. news.
  • SC-PTM is to provide services for multiple users in the cell. It cannot provide user-specific adaptive parameter configuration, that is, it cannot provide link adaptive transmission for a single user. Therefore, the coverage that SC-PTM can provide, or the data that can be provided
  • the transmission rate depends on the user with the worst link quality. For users with better link quality, data reception may be completed quickly, but in order to ensure the reception performance of other users, the same data packet needs to be sent repeatedly. For users who have successfully received the data packet, they do not know what to do. If a data packet is a newly transmitted data packet or a retransmitted data packet, it is necessary to continue to receive subsequent data packets. If the subsequently received data packet is a retransmitted data packet, it is meaningless to the user And waste its power consumption.
  • the index of the data packet transmitted by the current SC-PTM transmission can be indicated through the DCI.
  • the DCI can be used to indicate the index of a data packet in a predefined period (such as 160ms), or to indicate the index of a data packet in multiple predefined periods; the DCI includes at least one of the following to notify the SC-MCCH message For the changed DCI, the DCI of the SC-MTCH is scheduled.
  • a predefined period such as 160ms
  • the DCI includes at least one of the following to notify the SC-MCCH message For the changed DCI, the DCI of the SC-MTCH is scheduled.
  • data packets with the same index transmit the same data.
  • the indexes of data packets transmitted in adjacent predefined periods may be the same, and the transmitted data may be the same or different.
  • the data packet index is a value in a predefined index set. Specifically, for example, every 4 data packets are used as an index period, that is, 2 bits represent indexes 00, 01, 10, and 11. For example, every 8 data packets are used as an index period, that is, 3bit represents the index 000, 001, 010, 011, 100, 101, 110, 111. For example, take every 16 data packets as an index period, that is, 4bit represents the index 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111.
  • taking every 32 data packets as an index period represents the index 00000, 00001, 00010, 00011, 00100, 00101, 00110, 00111, 01000, 01001, 01010, 01011, 01100, 01101, 01110, 01111, 10000, 10001, 10010, 10011, 10100, 10101, 10110, 10111, 11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111.
  • the SC-MCCH may be used to indicate the index of the data packet transmitted by the SC-PTM transmission.
  • the SC-MCCH configuration information contains at least one of the following:
  • an SC-MTCH scheduling window define the window range occupied by new transmission and retransmission of data packets with different indexes (for example, the subframe range in the SC-MTCH scheduling window); scheduling in an SC-MTCH In the window, define the window range occupied by the newly transmitted data packets of multiple index sets and the window range occupied by the retransmission; in an SC-MTCH scheduling window, configure the retransmission time of a certain data packet or multiple data packets Domain interval, such as: data packet X1 to Xk, transmitted in the time period n1 to n2, interval Y time, retransmitted in the time period Y+n1 to Y+n2; retransmission in the retransmission time period can also be configured Times; the total number of packets.
  • a certain data packet or multiple data packets Domain interval such as: data packet X1 to Xk, transmitted in the time period n1 to n2, interval Y time, retransmitted in the time period Y+n1 to Y+
  • the data transmitted by data packets with the same index may be the same or different, depending on the total number of data packets transmitted in the SC-MTCH window and the selection of the data packet index. Value range.
  • the data transmitted by the data packet sets of the same index set may be the same or different, depending on the total number of data packets transmitted in the SC-MTCH window and the data packet index The range of values.
  • the UE can determine whether the data packets with the same index value are different data packets according to the total number of data packets, the index collection period (for example, every four indexes is an index period), and the window range information of the data packets with the same index value.
  • the embodiment of the present invention also provides a method for instructing SC-PTM to stop.
  • the DCI message for stopping the SC-MCCH can carry at least one of the following information: SC-PTM stop indication information; SC -MCCH service type (that is, indicate which service to stop); stop indication in the SC-MCCH cycle.
  • the SC-PTM stop instruction information is the instruction information to stop the SC-PTM transmission service;
  • the SC-MCCH service type is the SC-PTM transmission indicating the one or more service types to be stopped;
  • the stop indication in the SC-MCCH cycle is the stop time node indicated by the SC-PTM to stop transmission is within the effective time of the SC-MCCH message.
  • the embodiment of the present invention also provides a method for SC-MCCH and DCI joint indication, such as: SC-MCCH configures the number of data packets transmitted in a certain period of time, and DCI indicates the number of data packets in the period of time. Index; the configuration information of SC-MCCH includes: the number of data packets transmitted in one SC-MTCH scheduling window; at the same time, DCI is used to indicate the index of data packets in the SC-MTCH scheduling window.
  • the DCI indicator index is based on the number of data packets transmitted by the SC-MCCH configured in a SC-MTCH scheduling window; if there are 2 data packets to be transmitted, then the DCI uses 1 bit to indicate the index; if the number of data packets transmitted is 2 to 4 If the number of transmitted data packets is 4 to 8, then the DCI uses 3 bits to indicate the index; if the number of transmitted data packets is 8 to 16, then the DCI uses 4 bits to indicate the index; such as transmission data The number of packets is 16 to 32, then the DCI uses 5 bits to indicate the index.
  • a method is provided to indicate the index of a data packet within a predefined period (such as 160 ms) by using DCI.
  • the DCI indicates the index of each data packet, and at the same time, it needs to indicate the number of data packets to be transmitted in the predefined period (new transmission and retransmission of the same data packet are counted as one data packet), or indicate each The data packets of different indexes are different.
  • the UE determines whether to receive the data packet on the resource if it has successfully received the data packet according to the scheduling resources of the data of each index and its own reception of the data packet.
  • the data packet index is a value in a predefined index set. Specifically, for example, every 4 data packets are used as an index period, that is, 2 bits represent indexes 00, 01, 10, and 11. For example, every 8 data packets are used as an index period, that is, 3bit represents the index 000, 001, 010, 011, 100, 101, 110, 111. For example, every 16 data packets are used as an index period, that is, 4bit represents the index 0000, 0001, 0010, 0011, 0100, 0101, 0110, 0111, 1000, 1001, 1010, 1011, 1100, 1101, 1110, 1111.
  • taking every 32 data packets as an index period that is, 5bit means index 00000, 00001, 00010, 00011, 00100, 00101, 00110, 00111, 01000, 01001, 01010, 01011, 01100, 01101, 01110, 01111, 10000 10001, 10010, 10011, 10100, 10101, 10110, 10111, 11000, 11001, 11010, 11011, 11100, 11101, 11110, 11111.
  • FIG. 6 is a schematic diagram of a flow of data packet transmission according to an optional embodiment of the present disclosure. As shown in FIG. 6, taking 4 data packets as an index period as an example, in the figure: 0 is the index of the data packet 00; 1 is the index 01 of the data packet; 2 is the index 10 of the data packet; 3 is the index 11 of the data packet. If the UE has successfully received the data packet with index #00 at some point in the predefined period, the UE will ignore the scheduling with index #00 in the scope of subsequent events.
  • an index that uses DCI to indicate data packets in multiple predefined periods (such as 160 ms).
  • the DCI is used to indicate the index of data packets in multiple predefined periods (such as 160 ms).
  • the data packet index in a predefined period is defined as #00, 01, 10, 11.
  • the data packet index of Fig. 7 can be defined in adjacent periods, and the transmitted data can be the same or different, and can indicate whether they are the same through signaling.
  • FIG. 7 is a schematic diagram of a data packet transmission flow diagram according to another optional embodiment of the present disclosure, as shown in FIG.
  • the index of the data packet is indicated.
  • the control information related to SC-PTM is broadcast through SIB20 (SIB20-NB).
  • SIB20-NB SIB20-NB
  • SC-MCCH SC-MCCH
  • an SC-PTM service may be being transmitted, and a new data packet may be being transmitted or a data packet may be retransmitted at this time. If a retransmitted data packet is being transmitted, for some UEs that have successfully received the data packet, because they do not know whether the data packet is retransmitted or the next new data packet, the UE will continue to receive these data Package, but this will bring some unnecessary power consumption overhead.
  • index information of the next data packet in the DCI message that notifies the SC-MCCH-related control information of the change.
  • Data packets containing the same content are assigned the same index. For example, 2bit information can be used as a data packet. Index, that is, every four new data packets (the indexes are 00, 01, 10, and 11 respectively) are used as an index period.
  • the method of indicating the index of the data packet When using DCI to schedule SC-MTCH, the method of indicating the index of the data packet.
  • the content of the existing DCI scheduling SC-MTCH message includes scheduling resources, modulation and coding strategy, repetition times, and DCI subframe repetition times.
  • the index information of the next data packet can be added to the content of this message. If the UE detects the DCI containing the scheduling information of the SC-MTCH on the common search space CSS of the PDCCH (NPDCCH), it can also know whether the next data packet to be transmitted is retransmitted or newly transmitted, and the UE is based on its previous reception Situation, decide whether to give up receiving or continue receiving.
  • NPDCCH common search space CSS of the PDCCH
  • the terminal needs to receive the data packet on the SC-MTCH scheduling subframe; if it is a retransmitted data packet, if the UE has successfully received the data packet, the UE will abandon the data packet Until the next new data packet scheduling appears, otherwise the UE will continue to receive the retransmitted data packet.
  • a MAC CE that stops the SC-PTM service is defined, where, as shown in the following Table 1, the LCID of the sub-header of the MAC PDU is:
  • the base station When the transmission of an SC-PTM service ends, the base station notifies the UE in the cell by issuing the MAC CE. In the existing standard, it is also stipulated that when the SC-MCCH control message is changed, the DCI will be used to notify the UE in the cell. When the UE in the small area detects the DCI again, it will receive a new SC-MCCH message, that is, start receiving SIB20 (SIB20-NB) messages.
  • SIB20-NB start receiving SIB20
  • an SC-MTCH scheduling window a method for defining the window range occupied by the newly transmitted data packets of each different index and the window range occupied by the retransmissions.
  • an SC-MTCH scheduling window define the window range occupied by the new transmission and the window range occupied by the retransmission of each data packet with different indexes.
  • the value range of the data packet index is #00, 01, 10, 11, You can define the new transmission window and retransmission window of the data packet whose index is 00.
  • the window can be a subframe range of an SC-MTCH scheduling window; there can be multiple windows for new transmission and retransmission at the same time, depending on the total number of data packets to be transmitted in a SC-MTCH scheduling window (the same index Newly transmitted and retransmitted data packets are counted as one) and the value range of the data packet index.
  • the total number of data packets to be transmitted in an SC-MTCH scheduling window is 8, and the value range of the data packet index is 4 (00, 01, 10, 11), then the data with the same index in this SC-MTCH scheduling window
  • the packet will correspond to two new transmission windows and two retransmission windows.
  • Table 2 shows that
  • a method for defining the window range occupied by the newly transmitted data packets of multiple index sets and the window range occupied by the retransmissions In one SC-MTCH scheduling window, a method for defining the window range occupied by the newly transmitted data packets of multiple index sets and the window range occupied by the retransmissions.
  • the window range occupied by new transmission and retransmission of data packets of multiple index sets for example, the value range of the data packet index is #00, 01, 10, 11 .
  • the window can be a subframe range of an SC-MTCH scheduling window; there can be multiple windows for new transmission and retransmission at the same time, depending on the total number of data packets to be transmitted in a SC-MTCH scheduling window (the same index Newly transmitted and retransmitted data packets are counted as one) and the value range of the data packet index.
  • the total number of data packets to be transmitted in an SC-MTCH scheduling window is 8, and the value range of the data packet index is 4 (00, 01, 10, 11), then in this SC-MTCH scheduling window the same index set
  • the data packet set will correspond to two new transmission windows and two retransmission windows. As shown in Table 3 below:
  • SC-MTCH scheduling window define the retransmission time domain interval of a certain data packet or multiple data packets.
  • the SC-MCCH configuration information includes: in an SC-MTCH scheduling window, configure the retransmission time domain interval of a certain data packet or multiple data packets, such as: data packets X1 to Xk, in the time period n1 to n2 Transmission, Y time intervals, retransmission in the time period Y+n1 to Y+n2; the number of retransmissions within the retransmission time period can also be configured.
  • the embodiment of the present disclosure also provides a computer-readable storage medium, and a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute any of the foregoing method embodiments when running. step.
  • the foregoing computer-readable storage medium may be configured to store a computer program for executing the following steps:
  • the first data packet is used to instruct the terminal to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that the terminal has already received.
  • the data packets are configured with the same index.
  • the first data packet is sent to the terminal, and the first data packet is used to indicate that the terminal is in the first If an index is the same as the second index of the second data packet that the terminal has received, the first data packet is discarded.
  • the same data packet is configured with the same index, which solves the problem of repeated reception of data packets in the related art.
  • the resulting problem of higher power consumption of the terminal reduces the power consumption of the terminal.
  • the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short), Various media that can store computer programs, such as mobile hard disks, magnetic disks, or optical disks.
  • An embodiment of the present disclosure also provides an electronic device, including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute the steps in any of the foregoing method embodiments.
  • the aforementioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • the foregoing processor may be configured to execute the following steps through a computer program:
  • the first data packet is used to instruct the terminal to abandon receiving the first data packet when the first index is the same as the second index of the second data packet that the terminal has already received.
  • the data packets are configured with the same index.
  • the first data packet is sent to the terminal, and the first data packet is used to indicate that the terminal is in the first If an index is the same as the second index of the second data packet that the terminal has received, the first data packet is discarded.
  • the same data packet is configured with the same index, which solves the problem of repeated reception of data packets in the related art.
  • the resulting problem of higher power consumption of the terminal reduces the power consumption of the terminal.
  • the embodiment of the present disclosure also provides a computer-readable storage medium, and a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute any of the foregoing method embodiments when running. step.
  • the foregoing computer-readable storage medium may be configured to store a computer program for executing the following steps:
  • the first message since the first message is received, where the first message at least indicates the first index of the first data packet to be received, in the case that the first index is the same as the second index of the second data packet that has been received , Give up receiving the first data packet, where the same data packet is configured with the same index, which solves the problem of high power consumption of the terminal caused by repeatedly receiving data packets in the related art, and reduces the power consumption of the terminal.
  • the foregoing storage medium may include, but is not limited to: U disk, Read-Only Memory (Read-Only Memory, ROM for short), Random Access Memory (Random Access Memory, RAM for short), Various media that can store computer programs, such as mobile hard disks, magnetic disks, or optical disks.
  • An embodiment of the present disclosure also provides an electronic device, including a memory and a processor, the memory is stored with a computer program, and the processor is configured to run the computer program to execute the steps in any of the foregoing method embodiments.
  • the aforementioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the aforementioned processor, and the input-output device is connected to the aforementioned processor.
  • the foregoing processor may be configured to execute the following steps through a computer program:
  • the first message since the first message is received, where the first message at least indicates the first index of the first data packet to be received, in the case that the first index is the same as the second index of the second data packet that has been received , Give up receiving the first data packet, where the same data packet is configured with the same index, which solves the problem of high power consumption of the terminal caused by repeatedly receiving data packets in the related art, and reduces the power consumption of the terminal.
  • modules or steps of the present disclosure can be implemented by a general computing device, and they can be concentrated on a single computing device or distributed in a network composed of multiple computing devices.
  • they can be implemented with program codes executable by the computing device, so that they can be stored in the storage device for execution by the computing device, and in some cases, can be executed in a different order than here.

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Abstract

本公开提供了一种数据包的发送、接收方法及装置，其中，数据包的发送方法包括：向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引；向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。

Description

一种数据包的发送、接收方法及装置 技术领域
本公开涉及通信领域，具体而言，涉及一种数据包的发送、接收方法及装置。
背景技术
对于单小区点到多点(SingleCellPoint-To-Multipoint，SC-PTM)业务，一个数据包的传输对象为多个UE，为了保证UE的接收性能，网络需要按照预定义的重复次数，重发发送同一个数据包。然而，对于某个UE个体而言，可能在最大重复次数到来之前已经完成了对该数据包的接收，按照当前的机制，由于UE不知道下一个待传的数据包是新传数据包还是重传数据包，因此对于UE个体而言，可能出现仍然要继续接收已经成功接收的数据包的情况，这样将会对终端的功耗带来不利的影响。
针对相关技术中由于重复接收数据包所造成的终端功耗较高的问题，尚不存在解决方案。
发明内容
本发明实施例提供了一种数据包的发送、接收方法及装置，以至少解决相关技术中由于重复接收数据包所造成的终端功耗较高的问题。
根据本公开的一个实施例，提供了一种数据包的发送方法，包括：
向终端发送第一消息，其中，所述第一消息至少指示了待发送的第一数据包的第一索引；向终端发送所述第一数据包，所述第一数据包用于指示所述终端在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
根据本公开的另一个实施例，提供了一种数据包的接收方法，包括：
接收第一消息，其中，所述第一消息至少指示了待接收的第一数据包的第一索引；在所述第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
根据本公开的另一个实施例，提供了一种数据包的发送装置，包括：
第一发送模块，设置为向终端发送第一消息，其中，所述第一消息至少指示了待发送的第一数据包的第一索引；
第二发送模块，设置为向终端发送所述第一数据包，所述第一数据包用于指示所述终端在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
根据本公开的另一个实施例，提供了一种数据包的接收装置，包括：
第一接收模块，设置为接收第一消息，其中，所述第一消息至少指示了待接收的第一数据包的第一索引；
放弃模块，设置为在所述第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
根据本公开的另一个实施例，提供了一种网络系统，包括基站和终端，其中，所述基站设置为向终端发送第一消息，所述第一消息至少指示了待发送的第一数据包的第一索引；所述终端设置为接收所述第一消息，并且，在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
根据本公开的又一个实施例，还提供了一种计算机可读的存储介质，所述计算机可读的存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
根据本公开的又一个实施例，还提供了一种电子装置，包括存储器和 处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行上述任一项方法实施例中的步骤。
附图说明
此处所说明的附图用来提供对本公开的进一步理解，构成本申请的一部分，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：
图1是本发明实施例的一种数据包的发送方法的基站的硬件结构框图；
图2是根据本发明实施例的数据包的发送方法的流程图；
图3是根据本发明实施例的数据包的接收方法的流程图；
图4是根据本发明实施例的数据包的发送装置的结构框图；
图5是根据本发明实施例的数据包的接收装置的结构框图；
图6是根据本公开一个可选实施例的数据包的传输的流程示意图；
图7是根据本公开另一个可选实施例的数据包的传输的流程示意图。
具体实施方式
下文中将参考附图并结合实施例来详细说明本公开。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
需要说明的是，本公开的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。
本申请实施例中所提供的方法实施例可以在基站、计算机终端或者类似的运算装置中执行。以运行在基站上为例，图1是本发明实施例的一种数据包的发送方法的基站的硬件结构框图。如图1所示，基站10可以包括一个或多个(图1中仅示出一个)处理器102(处理器102可以包括但不限于微处理器MCU或可编程逻辑器件FPGA等的处理装置)和用于存 储数据的存储器104，可选地，上述基站还可以包括用于通信功能的传输设备106以及输入输出设备108。本领域普通技术人员可以理解，图1所示的结构仅为示意，其并不对上述基站的结构造成限定。例如，基站10还可包括比图1中所示更多或者更少的组件，或者具有与图1所示不同的配置。
存储器104可用于存储计算机程序，例如，应用软件的软件程序以及模块，如本发明实施例中的数据包的发送方法对应的计算机程序，处理器102通过运行存储在存储器104内的计算机程序，从而执行各种功能应用以及数据处理，即实现上述的方法。存储器104可包括高速随机存储器，还可包括非易失性存储器，如一个或者多个磁性存储装置、闪存、或者其他非易失性固态存储器。在一些实例中，存储器104可进一步包括相对于处理器102远程设置的存储器，这些远程存储器可以通过网络连接至基站10。上述网络的实例包括但不限于互联网、企业内部网、局域网、移动通信网及其组合。
传输装置106用于经由一个网络接收或者发送数据。上述的网络具体实例可包括基站10的通信供应商提供的无线网络。在一个实例中，传输装置106包括一个网络适配器(Network Interface Controller，简称为NIC)，其可通过基站与其他网络设备相连从而可与互联网进行通讯。在一个实例中，传输装置106可以为射频(Radio Frequency，简称为RF)模块，其用于通过无线方式与互联网进行通讯。
在本实施例中提供了一种运行于基站的数据包的发送方法，图2是是根据本发明实施例的数据包的发送方法的流程图，如图2所示，该流程包括如下步骤：
步骤S202，向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引；
步骤S204，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收 第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，上述步骤的执行主体可以为基站等，但不限于此。
可选地，方法还包括：按照数据传输周期发送数据包，其中，数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
可选地，第一消息还指示了以下至少之一：待传输的数据包的总数、数据传输周期、指定数据包的重传次数、指定数据包的新传时域区间、指定数据包的重传时域区间。
需要说明的是，终端可以按照数据传输周期进行数据包的接收。
需要说明的是，例如，有四个不同的数据包待传输，那么可以预先配置这四个不同的数据包在指定的数据传输周期内发送，其中，每个数据包均被配置为新传一次和重传一次。其中，还可以给这四个不同的数据包中的每个数据包配置唯一的索引，也就是说在这个指定的数据传输周期内，索引可以起到区分不同数据包的作用。还需要说明的是，这四个数据包可以统一按顺序先新传一次，再重传一次。还需要说明的是，在该指定的数据传输周期内，每个数据包在新传过程和重传过程中所被配置的索引都是唯一的，在该数据传输周期结束，即该四个不同的数据包全部完成传输后，可以重新开始一个数据传输周期用来传输新的数据包，在该重新开始的数据传输周期内，可以使用原来已经使用过的索引区分不同的数据包，也可以使用原来没有使用过的新的索引区分不同的数据包。
可选地，第一消息还指示了数据传输停止信息，其中，停止信息包括 以下至少之一：被停止的业务类型、停止传输的时域区间。
可选地，第一消息为下行控制信息或控制信道配置消息。
可选地，方法还包括：向终端发送第二消息，其中，第二消息指示了指定数据传输周期内待传输的数据包的的总数，和/或，指定数据传输周期内数据包的索引。
需要说明的是，第一消息可以是下行控制信息，第二消息可以是控制信道配置消息。
本实施例还提供了一种数据包的接收方法，图3是是根据本发明实施例的数据包的接收方法的流程图，如图3所示，包括：
步骤S301，接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引；
步骤S303，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，方法还包括：按照数据传输周期接收数据包，其中，数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
可选地，第一消息还指示了以下至少之一：待传输的数据包的总数、数据传输周期、指定数据包的重传次数、指定数据包的新传时域区间、指定数据包的重传时域区间。
可选地，第一消息还指示了数据传输停止信息，其中，停止信息包括以下至少之一：被停止的业务类型、停止传输的时域区间。
可选地，第一消息为下行控制信息和/或控制信道配置消息。
可选地，方法还包括：接收第二消息，其中，第二消息指示了指定数据传输周期内待传输的数据包的的总数，和/或，指定数据传输周期内数据包的索引。需要说明的是，第一消息可以是下行控制信息，第二消息可以是控制信道配置消息。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本公开各个实施例所述的方法。
在本实施例中还提供了一种数据包的发送装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。
图4是根据本发明实施例的数据包的发送装置的结构框图，如图4所示，该装置包括：
第一发送模块42，设置为向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引；
第二发送模块44，设置为向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述模块，由于向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引，向终端发送第一数据包，第一数据包 用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，装置还包括：传输模块，设置为按照数据传输周期发送数据包，其中，数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
可选地，装置还包括：第三发送模块，设置为向终端发送第二消息，其中，第二消息指示了指定数据传输周期内待传输的数据包的的总数。
在本实施例中还提供了一种数据包的接收装置，该装置用于实现上述实施例及优选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置较佳地以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。该接收装置可以是终端。
图5是根据本发明实施例的数据包的接收装置的结构框图，如图5所示，该装置包括：
第一接收模块51，设置为接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引；
放弃模块53，设置为在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述模块，由于接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，该装置还包括：第二接收模块，设置为按照数据传输周期接 收数据包，其中，数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
可选地，该装置还包括：第三接收模块，设置为接收第二消息，其中，第二消息指示了指定数据传输周期内待传输的数据包的的总数。需要说明的是，第一消息可以是下行控制信息，第二消息可以是控制信道配置消息。
需要说明的是，上述各个模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述各个模块以任意组合的形式分别位于不同的处理器中。
本实施例还提供了一种网络系统，包括基站和终端，其中，基站设置为向终端发送第一消息，第一消息至少指示了待发送的第一数据包的第一索引；
终端设置为接收第一消息，并且，在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
可选实施方式
可以通过蜂窝网络为通用移动通信系统(Universal Mobile Telecommunications System，UMTS)提供广播服务。下行信道中支持广播机制的可以有两种信道：一种是多播/组播单频网络(Multicast-Broadcast Single Frequency Network，MBSFN)，另一种是单小区点到多点(SingleCellPoint-To-Multipoint，SC-PTM)。
SC-PTM传输相关的部分控制信息在系统信息块SIB20(System Information Block，SIB20-NB)里广播，其中包含单小区多播控制信道(Single Cell Multicast Control channel，SC-MCCH)传输的相关配置信息(半静态定义SC-MCCH传输的窗口)，单小区多播传输信道(Single Cell Multicast Transmission channel，SC-MTCH)的控制信息承载在SC-MCCH上，即SC-MCCH消息的内容，其中包含SC-MTCH传输所需的配置信息SC-MTCH-Info，即半静态定义了SC-MTCH的传输的窗口。
物理下行控制信道(Physical Downlink Control Channel，PDCCH)上动态调度SC-MCCH，SC-MTCH。如果SC-MCCH消息无效/发生变更，可以通过在物理下行控制信道(PDCCH)上利用DCI指示发生变更，UE可根据SIB20中的SC-MCCH的修改周期等相关的配置，确定开始接收新的SC-MCCH消息。关于SC-PTM传输，可以通过SC-MCCH半静态的配置SC-PTM相关的控制信息(包括SC-MTCH的调度信息)，一般而言只有在新的MBMS业务发生时，才会变更SC-MCCH消息。
SC-PTM是为小区内的多用户提供服务，无法提供用户特定的自适应参数配置，即无法针对单个用户提供链路自适应传输，因此SC-PTM可提供的覆盖，或者说可提供的数据传输速率，取决于链路质量最差的用户。对于链路质量较好的用户，可能很快完成数据的接收，但是为了保证其他用户的接收性能，需要重复多次发送同一个数据包，对于已经成功接收到数据包的用户，由于不知道下一个数据包是新传的数据包还是重传的数据包，还需要继续去接收后续的数据包，如果后续接收到的数据包为重传的数据包，这样对该用户来说是无意义的而且浪费其功耗。
可选地，可以通过DCI指示当前SC-PTM传输所传数据包索引。
示例性地，可以利用DCI指示一个预定义周期内(如160ms)数据包的索引，或指示多个预定义周期内数据包的索引；所述的DCI至少包含如下之一，通知SC-MCCH消息发生变更的DCI，调度SC-MTCH的DCI。
所述的一个预定义周期内(如160ms)，相同索引的数据包传输的数据相同。
所述的多个预定义周期内，相邻预定义周期内所传数据包的索引可以相同，所传的数据可以相同也可以不同。
所述的数据包索引为一个预定义的索引集合中的一个数值，具体的，如以每4个数据包作为一个索引周期，即2bit表示索引00，01，10，11。如以每8个数据包作为一个索引周期，即3bit表示索引000，001，010，011，100，101，110，111。如以每16个数据包作为一个索引周期，即4bit 表示索引0000，0001，0010，0011，0100，0101，0110，0111，1000，1001，1010，1011，1100，1101，1110，1111。如以每32个数据包作为一个索引周期，即5bit表示索引00000，00001，00010，00011，00100，00101，00110，00111，01000，01001，01010，01011，01100，01101，01110，01111，10000，10001，10010，10011，10100，10101，10110，10111，11000，11001，11010，11011，11100，11101，11110，11111。
可选地，可以通过SC-MCCH指示SC-PTM传输所传数据包索引。在SC-MCCH的配置信息里至少包含如下之一：
在一个SC-MTCH调度窗口内，定义各个不同索引的数据包新传所占的窗口范围和重传所占的窗口范围(如，SC-MTCH调度窗口内子帧范围)；在一个SC-MTCH调度窗口内，定义多个索引集合的数据包新传所占的窗口范围和重传所占的窗口范围；在一个SC-MTCH调度窗口内，配置某个数据包或多个数据包的重传时域区间，如：数据包X1到Xk，在n1到n2时间段传输，间隔Y个时间，在Y+n1到Y+n2时间段重传；还可配置在该重传时间段内的重传次数；总的数据包数量。
所述的同一个SC-MTCH调度窗口内，相同索引的数据包所传输的数据可以相同也可以不同，取决于在该SC-MTCH窗口内传输的数据包的总个数以及数据包索引的取值范围。
所述的同一个SC-MTCH调度窗口内，相同索引集合的数据包集合所传输的数据可以相同也可以不同，取决于在该SC-MTCH窗口内传输的数据包的总个数以及数据包索引的取值范围。
UE可根据总的数据包的个数，索引集合周期(如每四个索引为一个索引周期)，同一索引值的数据包的窗口范围信息确定同一索引值的数据包是否为不同的数据包。
可选地，本发明实施例还提供了一种指示SC-PTM停止的方法。
可选地，在SC-MCCH发生变更时，同时有SC-PTM传输需要停止时，此时可以在停止SC-MCCH的DCI消息里携带至少如下信息之一： SC-PTM停止的指示信息；SC-MCCH业务类型(即指示哪个业务停止)；SC-MCCH周期内停止指示。所述的SC-PTM停止的指示信息为停止SC-PTM传输业务的指示信息；所述的SC-MCCH业务类型为指示要停止的那一种或多种业务类型的SC-PTM传输；所述的SC-MCCH周期内停止指示为SC-PTM停止传输所指示的停止时间节点为SC-MCCH消息有效时间内。
可选地，本发明实施例还提供了一种SC-MCCH和DCI联合指示的方法，如：SC-MCCH配置某个时间段内传输的数据包的数量，DCI指示该时间段内数据包的索引；在SC-MCCH的配置信息里包含:在一个SC-MTCH调度窗口内传输的数据包的个数；同时利用DCI指示在该SC-MTCH调度窗口内数据包的索引。
DCI指示索引基于SC-MCCH在一个SC-MTCH调度窗口配置的传输的数据包的个数；如传输的数据包为2个，那么DCI用1bit指示索引；如传输数据包个数为2～4个，那么DCI用2bit指示索引；如传输数据包个数为4～8个，那么DCI用3bit指示索引；如传输数据包个数为8～16个，那么DCI用4bit指示索引；如传输数据包个数为16～32个，那么DCI用5bit指示索引。
可选实施方式一
提供了一种利用DCI指示一个预定义周期内(如160ms)数据包的索引的方法。
在一个预定的周期内，DCI指示各个数据包索引，同时需要指示在该预定义周期内所要传的数据包个数(同一个数据包的新传和重传算一个数据包)，或者指示各个不同索引的数据包不同。UE在该预定义周期内，根据各个索引的数据的调度资源以及自身对该数据包的接收情况，如是否已经成功接收到了，确定是否要在该资源上接收该数据包。
所述的数据包索引为一个预定义的索引集合中的一个数值，具体的，如以每4个数据包作为一个索引周期，即2bit表示索引00，01，10，11。 如以每8个数据包作为一个索引周期，即3bit表示索引000，001，010，011，100，101，110，111。如以每16个数据包作为一个索引周期，即4bit表示索引0000，0001，0010，0011，0100，0101，0110，0111，1000，1001，1010，1011，1100，1101，1110，1111。如以每32个数据包作为一个索引周期，即5bit表示索引00000，00001，00010，00011，00100，00101，00110，00111，01000，01001，01010，01011，01100，01101，01110，01111，10000，10001，10010，10011，10100，10101，10110，10111，11000，11001，11010，11011，11100，11101，11110，11111。
图6是根据本公开一个可选实施例的数据包的传输的流程示意图，如图6所示，以4个数据包作为一个索引周期为例，图中：0即为数据包的索引00；1即为数据包的索引01；2即为数据包的索引10；3即为数据包的索引11。如果UE在该预定义周期内的某个时刻已经成功接收到索引为#00的数据包，那么该UE将在后续事件范围内针对索引为#00的调度将忽略。
可选实施方式二
提供了一种利用DCI指示多个预定义周期内(如160ms)数据包的索引。
利用DCI指示多个预定义周期内(如160ms)数据包的索引，如一个预定义周期内数据包索引定义为#00，01，10，11。相邻的周期内可定义图7的数据包索引，所传的数据可以相同也可以不同，可以通过信令指示是否相同。图7是根据本公开另一个可选实施例的数据包的传输的流程示意图，如图7所示：如果是相同的UE在前一个周期内成功接收到数据包#00，01，10，那么UE只需要在后一个周期内接收数据包索引为#11的数据包；如果两个相邻的周期内相同索引的数据包所传的数据不同，那么UE都需要对两个周期内的数据包进行接收。
可选实施方式三
在利用DCI通知SC-MCCH发生变更的时候，指示数据包的索引。
SC-PTM相关的控制信息通过SIB20(SIB20-NB)广播下来，当SIB20(SIB20-NB)与SC-MCCH相关的控制信息发生变更时，将通过DCI通知小区内的UE。当发生变更时，可能一个SC-PTM业务正在传输，此时可能正在传某个新数据包或者重传某个数据包。如果是正在传某个重传的数据包，对于一些已经成功接收到该数据包的UE，由于不知道该数据包是重传的还是下一个新传的数据包，UE还将要继续接收这些数据包，但是这样将带来一部分不必要的功耗开销。此时，可以在通知SC-MCCH相关的控制信息发生变更的DCI消息里，指示下一个数据包的索引信息，包含同样内容的数据包分配相同的索引，如可以用2bit信息用做数据包的索引，即每四个新数据包(索引分别为00，01，10，11)作为一个索引周期。UE当收到索引与之前接收到的数据包的索引相同，那么该UE将在下一个重传的数据包到来的时候放弃接收。
可选实施方式四
在利用DCI调度SC-MTCH时，指示数据包的索引的方法。
现有DCI调度SC-MTCH的消息内容包含，调度资源、调制编码策略、重复次数、DCI子帧的重复次数。可以在此消息内容里增加下一个数据包的索引的信息。UE在PDCCH(NPDCCH)的公共搜索空间CSS上如果检测到包含SC-MTCH的调度信息的DCI，同时可以获知下一个待传的数据包是重传的还是新传的，UE根据自己之前的接收情况，决定是放弃接收还是继续接收。如果是新传的数据包，那么终端需要在SC-MTCH的调度子帧上接收该数据包；如果是重传的数据包，如果UE已经成功接收该数据包，那么UE将放弃对该数据包的接收，直至下一个新的数据包调度出现，否则UE将继续接收该重传的数据包。
可选实施方式五
在利用DCI通知SC-MCCH发生变更的时候，指示SC-PTM停止的方法。
定义了一种停止SC-PTM业务的MAC CE，其中，如以下表1所示， 所述的MAC PDU的sub-header的LCID为：
10111 SC-PTM Stop Indication
表1
并且，为固定0bit大小。当一个SC-PTM业务传输结束时，基站通过下发该MAC CE告知小区内的UE。在现有标准中，还规定了，当SC-MCCH控制消息发生变更时，将通过DCI告知小区内的UE。小区内UE再检测到该DCI时，将会接收新的SC-MCCH消息，即开始接收SIB20(SIB20-NB)消息。
在指示SC-MCCH控制消息发生变更时，存在一种情况，此时SC-PTM业务结束，需要下发SC-PTM停止的信令消息，可以考虑在通知SC-MCCH控制消息发生变更的DCI消息里增加指示SC-PTM停止的信令消息。
可选实施方式六
在一个SC-MTCH调度窗口内，定义各个不同索引的数据包新传所占的窗口范围和重传所占的窗口范围的方法。
在一个SC-MTCH调度窗口内，定义各个不同索引的数据包新传所占的窗口范围和重传所占的窗口范围，如数据包索引的取值范围是#00，01，10，11，可定义索引为00的数据包新传的窗口、重传的窗口。窗口可以为一个SC-MTCH调度窗口的一个子帧范围；同时新传和重传的窗口可以为多个，具体根据在一个SC-MTCH调度窗口要传的总的数据包个数(相同索引的新传和重传数据包算一个)和数据包索引的取值范围而定。如一个SC-MTCH调度窗口要传的总的数据包个数为8，数据包索引的取值范围4(00，01，10，11)，那么在此SC-MTCH调度窗口同一个索引的数据包将对应两个新传窗口，两个重传窗口。如下表2所示:
Figure PCTCN2020129032-appb-000001
Figure PCTCN2020129032-appb-000002
表2
可选实施方式七
在一个SC-MTCH调度窗口内，定义多个索引集合的数据包新传所占的窗口范围和重传所占的窗口范围的方法。
在一个SC-MTCH调度窗口内，定义多个索引集合的数据包新传所占的窗口范围和重传所占的窗口范围；如数据包索引的取值范围是#00，01，10，11，可定义索引集合为00，01，10，11的数据包集合的新传的窗口、重传的窗口。窗口可以为一个SC-MTCH调度窗口的一个子帧范围；同时新传和重传的窗口可以为多个，具体根据在一个SC-MTCH调度窗口要传的总的数据包个数(相同索引的新传和重传数据包算一个)和数据包索引的取值范围而定。如一个SC-MTCH调度窗口要传的总的数据包个数为8，数据包索引的取值范围4(00，01，10，11)，那么在此SC-MTCH调度窗口同一个索引集合的数据包集合将对应两个新传窗口，两个重传窗口。如下表3所示:
Figure PCTCN2020129032-appb-000003
表3
可选实施方式八
在一个SC-MTCH调度窗口内，定义某个数据包或多个数据包的重传时域区间。
在SC-MCCH的配置信息里包含：在一个SC-MTCH调度窗口内，配置某个数据包或多个数据包的重传时域区间，如：数据包X1到Xk，在n1到n2时间段传输，间隔Y个时间，在Y+n1到Y+n2时间段重传；还可配置在该重传时间段内的重传次数。
本公开的实施例还提供了一种计算机可读的存储介质，该计算机可读的存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述计算机可读的存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引；
S2，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引；
S2，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于向终端发送第一消息，其中，第一消息至少指示了待发送的第一数据包的第一索引，向终端发送第一数据包，第一数据包用于指示终端在第一索引与终端已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
本公开的实施例还提供了一种计算机可读的存储介质，该计算机可读的存储介质中存储有计算机程序，其中，该计算机程序被设置为运行时执行上述任一项方法实施例中的步骤。
可选地，在本实施例中，上述计算机可读的存储介质可以被设置为存储用于执行以下步骤的计算机程序：
S1，接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引；
S2，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了 相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(Read-Only Memory，简称为ROM)、随机存取存储器(Random Access Memory，简称为RAM)、移动硬盘、磁碟或者光盘等各种可以存储计算机程序的介质。
本公开的实施例还提供了一种电子装置，包括存储器和处理器，该存储器中存储有计算机程序，该处理器被设置为运行计算机程序以执行上述任一项方法实施例中的步骤。
可选地，上述电子装置还可以包括传输设备以及输入输出设备，其中，该传输设备和上述处理器连接，该输入输出设备和上述处理器连接。
可选地，在本实施例中，上述处理器可以被设置为通过计算机程序执行以下步骤：
S1，接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引；
S2，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引。
通过上述步骤，由于接收第一消息，其中，第一消息至少指示了待接收的第一数据包的第一索引，在第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收第一数据包，其中，相同的数据包被配置了相同的索引，解决了相关技术中由于重复接收数据包所造成的终端功耗较高的问题，降低了终端的功耗。
可选地，本实施例中的具体示例可以参考上述实施例及可选实施方式中所描述的示例，本实施例在此不再赘述。
显然，本领域的技术人员应该明白，上述的本公开的各模块或各步骤可以用通用的计算装置来实现，它们可以集中在单个的计算装置上，或者分布在多个计算装置所组成的网络上，可选地，它们可以用计算装置可执行的程序代码来实现，从而，可以将它们存储在存储装置中由计算装置来执行，并且在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤，或者将它们分别制作成各个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本公开不限制于任何特定的硬件和软件结合。
以上所述仅为本公开的优选实施例而已，并不用于限制本公开，对于本领域的技术人员来说，本公开可以有各种更改和变化。凡在本公开的原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (17)

  1. 一种数据包的发送方法，包括：
    向终端发送第一消息，其中，所述第一消息至少指示了待发送的第一数据包的第一索引；
    向终端发送所述第一数据包，所述第一数据包用于指示所述终端在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
  2. 根据权利要求1所述的方法，其中，所述方法还包括：
    按照数据传输周期发送所述数据包，其中，所述数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
  3. 根据权利要求1所述的方法，其中，所述第一消息还指示了以下至少之一：
    待传输的数据包的总数、数据传输周期、指定数据包的重传次数、指定数据包的新传时域区间、指定数据包的重传时域区间。
  4. 根据权利要求1所述的方法，其中，所述第一消息还指示了数据传输停止信息，其中，所述停止信息包括以下至少之一：
    被停止的业务类型、停止传输的时域区间。
  5. 根据权利要求1至4中的任一项所述的方法，其中，所述第一消息为下行控制信息或控制信道配置消息。
  6. 根据权利要求1所述的方法，其中，所述方法还包括：
    向所述终端发送第二消息，其中，所述第二消息指示了指定数据传输周期内待传输的数据包的的总数，和/或，所述指定数据传输周期内所述数据包的索引。
  7. 一种数据包的接收方法，包括：
    接收第一消息，其中，所述第一消息至少指示了待接收的第一数据包的第一索引；
    在所述第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
  8. 根据权利要求7所述的方法，其中，所述方法还包括：
    按照数据传输周期接收所述数据包，其中，所述数据包中的指定数据包被配置为在一个指定数据传输周期内进行一次新传和至少一次重传。
  9. 根据权利要求7所述的方法，其中，所述第一消息还指示了以下至少之一：
    待传输的数据包的总数、数据传输周期、指定数据包的重传次数、指定数据包的新传时域区间、指定数据包的重传时域区间。
  10. 根据权利要求7所述的方法，其中，所述第一消息还指示了数据传输停止信息，其中，所述停止信息包括以下至少之一：
    被停止的业务类型、停止传输的时域区间。
  11. 根据权利要求7至10中的任一项所述的方法，其中，所述第一消息为下行控制信息和/或控制信道配置消息。
  12. 根据权利要求7所述的方法，其中，所述方法还包括：
    接收第二消息，其中，所述第二消息指示了指定数据传输周期内待传输的数据包的的总数，和/或，所述指定数据传输周期内所述数据包的索引。
  13. 一种数据包的发送装置，包括：
    第一发送模块，设置为向终端发送第一消息，其中，所述第一消息至少指示了待发送的第一数据包的第一索引；
    第二发送模块，设置为向终端发送所述第一数据包，所述第一数据包用于指示所述终端在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
  14. 一种数据包的接收装置，包括：
    第一接收模块，设置为接收第一消息，其中，所述第一消息至少指示了待接收的第一数据包的第一索引；
    放弃模块，设置为在所述第一索引与已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
  15. 一种网络系统，包括基站和终端，其中，所述基站设置为向终端发送第一消息，所述第一消息至少指示了待发送的第一数据包的第一索引；
    所述终端设置为接收所述第一消息，并且，在所述第一索引与所述终端已经接收的第二数据包的第二索引相同的情况下，放弃接收所述第一数据包，其中，相同的数据包被配置了相同的索引。
  16. 一种计算机可读的存储介质，所述计算机可读的存储介质中存储有计算机程序，其中，所述计算机程序被设置为运行时执行所述权利要求1至6任一项中所述的方法或者所述权利要求7至12任一项中所述的方法。
  17. 一种电子装置，包括存储器和处理器，所述存储器中存储有计算机程序，所述处理器被设置为运行所述计算机程序以执行所述权 利要求1至6任一项中所述的方法或者所述权利要求7至12任一项中所述的方法。
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