WO2014029272A1 - 一种基于lte的超远距离覆盖通信的方法、系统及设备 - Google Patents

一种基于lte的超远距离覆盖通信的方法、系统及设备 Download PDF

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Publication number
WO2014029272A1
WO2014029272A1 PCT/CN2013/080968 CN2013080968W WO2014029272A1 WO 2014029272 A1 WO2014029272 A1 WO 2014029272A1 CN 2013080968 W CN2013080968 W CN 2013080968W WO 2014029272 A1 WO2014029272 A1 WO 2014029272A1
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WIPO (PCT)
Prior art keywords
base station
downlink
uplink
subframe interval
station side
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PCT/CN2013/080968
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English (en)
French (fr)
Inventor
宋春辉
郭阳
刘利平
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中兴通讯股份有限公司
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Priority to US14/401,750 priority Critical patent/US9525533B2/en
Publication of WO2014029272A1 publication Critical patent/WO2014029272A1/zh

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Classifications

    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0079—Formats for control data
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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
    • 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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex

Definitions

  • the present invention relates to Long Term Evolution (LTE) technology, and in particular, to a method, system and device for ultra long distance coverage communication based on LTE.
  • LTE Long Term Evolution
  • LTE is a technology based on Orthogonal Frequency Division Multiplexing (OFDM)/Frequency Division Multiplexing (FDMA) and is regarded as a "quasi 4G" technology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • FDMA Frequency Division Multiplexing
  • LTE has the advantages of providing higher data rate, increasing cell capacity, reducing system delay, and supporting cell coverage of up to 100km radius. Therefore, it is increasingly favored by communication operators, and its application range is from high speed. Train communication extends to ground-to-air communications, such as aircraft communication systems.
  • the LTE physical layer uplink uses the Hybrid Hybrid Automatic Repeat Request (HQ) mechanism, that is, the retransmission data can be transmitted only in the subframe of the fixed subframe interval; and the downlink HARQ is the asynchronous HARQ, that is, the base station side.
  • HQ Hybrid Hybrid Automatic Repeat Request
  • the HARQ process number used by the terminal side is clearly told each time the scheduling is performed, so the data can be flexibly scheduled when retransmitting data.
  • Figure 2 illustrates LTE frequency division duplexing (FDD) uplink HARQ timing.
  • the uplink scheduling information is transmitted in subframe N, where the value of N ranges from 0 to 9, and the base station side is in subframe N+4. That is, the subframes with the subframe interval of 4 receive the data sent by the terminal side, and the terminal side receives the check information fed back by the base station side in the subframe N+8, that is, the subframe with the subframe interval of 8, for example: ACK/NACK information.
  • FDD frequency division duplexing
  • Figure 3 illustrates the LTE FDD downlink HARQ sequence.
  • the base station side sends the downlink scheduling information in the subframe N.
  • the subframe N+4 that is, the subframe with the subframe interval of 4
  • the timing of all the terminals is the same as that of the base station. Therefore, in order to compensate for the signal transmission delay, the uplink on the terminal side must be processed in advance to ensure that the timing of the air interface on the base station side is consistent.
  • the processing advance of the terminal side uplink mainly depends on the distance from the terminal side to the base station side, and the farther away from the base station side, the larger the advance amount.
  • Figure 4 shows that in an ideal case, the LTE FDD system has no signal transmission delay, and the hardware processing delay is set to 0.2 ms, that is, the terminal side uplink and downlink processing timings differ by 0.2 ms. As can be seen from the figure, the terminal The side from receiving data to processing completion time is 3.8ms.
  • Figure 5 illustrates the timing relationship between the uplink and downlink processing of the LTE FDD at a very long distance of 250 km.
  • the hardware processing delay of the terminal is set to 0.2 ms, and the transmission delay of the signal is about 1.66 ms.
  • the amount is 1.86 ms, and the time from the reception of the data to the completion of the processing is shortened to 2.14 ms.
  • the above analysis can be used to cover communication over ultra-long distance (greater than 100km radius), such as trans-ocean international routes, routes across uninhabited deserts or forests, etc., in order to meet the requirements of system HARQ processing timing, the actual processing on the terminal side Since the time is shortened as the propagation distance becomes longer, in order to cope with the problem that the processing time on the terminal side is shortened, it is necessary to increase the cost input and improve the processing capability on the terminal side. However, when the processing time on the terminal side is shortened to a certain extent, the processing capability of the terminal side is inevitably exceeded, and the entire system cannot work normally. Therefore, how to apply LTE technology for communication in ultra-long-distance coverage has become an urgent problem to be solved. Summary of the invention
  • the embodiments of the present invention provide a method, system, and device for ultra-long-range coverage communication based on LTE, which solves the problem that the HARQ retransmission mechanism fails when LTE is in a super long-distance coverage communication.
  • the LTE-based ultra-long-range coverage communication method provided by the embodiment of the present invention includes: increasing an uplink-side feedback subframe interval of a terminal side and an uplink feedback subframe interval of a base station side;
  • the terminal side After receiving the uplink scheduling information sent by the base station side, the terminal side sends data on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval.
  • the terminal side receives data check information sent by the base station side in a subframe in which the subframe interval is an increased base station side uplink feedback subframe interval.
  • the increasing the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval comprises: increasing the maximum radius of the LTE communication coverage according to the maximum radius of the LTE super long distance communication coverage in advance
  • the terminal side uplink feedback subframe interval equal to 1 OOKm and the base station side uplink feedback subframe interval;
  • the maximum radius of the LTE ultra long-distance communication coverage is greater than 100Km.
  • the increasing the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval includes: an uplink hybrid automatic repeat request (HARQ ) timing for LTE frequency division duplex (FDD),
  • HARQ uplink hybrid automatic repeat request
  • FDD frequency division duplex
  • the terminal side uplink feedback subframe interval is increased from 4 to 4+M
  • the base station side uplink feedback subframe interval is changed from 8 to 8+H, where M and H are positive integers, and H is greater than or equal to M.
  • the terminal side after receiving the uplink scheduling information sent by the base station side, the terminal side sends data on a subframe in which the subframe interval is an increased uplink feedback subframe interval of the terminal, as follows: After the base station side transmits the uplink scheduling information on the subframe N, the data is transmitted on the subframe N+4+M.
  • the data check information sent by the terminal side to the base station side in the subframe of the base station side uplink feedback subframe interval whose subframe interval is increased is: the terminal side receiving base station side is in the sub-frame The data check information sent by the frame N+8+H.
  • the method further includes: increasing a downlink side feedback subframe interval and a base station side downlink feedback subframe interval; and receiving, by the terminal side, the downlink scheduling information sent by the base station side, the subframe interval is increased.
  • the large terminal side downlink feedbacks the sub-frames of the sub-frames with the feedback check information, and receives the retransmission data or new data sent by the base station side in the sub-frames of the base station-side downlink feedback sub-frame interval whose subframe interval is increased. .
  • the increasing the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval comprises: increasing the maximum radius of the LTE communication coverage according to the maximum radius of the LTE super long distance communication coverage in advance
  • the terminal side downlink feedback subframe interval equal to lOOKm and the base station side downlink feedback subframe interval;
  • the maximum radius of the LTE ultra long-distance communication coverage is greater than 100Km.
  • the terminal side after receiving the downlink scheduling information sent by the base station, the terminal side feeds back the verification information on the subframe in which the subframe interval is the terminal downlink downlink subframe interval that is increased, as follows: After receiving the downlink scheduling information sent by the base station side on the subframe N, the side feedback feedback information on the subframe N+4+L1.
  • the retransmission data or the new data sent by the receiving base station side in the subframe where the subframe interval is the increased base station side downlink feedback subframe interval is: the receiving base station side is in the subframe N. +8+L2 retransmitted data or new data.
  • a system for LTE-based ultra-long-range coverage communication is provided by the embodiment of the present invention, where the system includes: a terminal side and a base station side, where
  • the terminal side is configured to: increase the uplink feedback sub-frame interval of the terminal side, and after receiving the uplink scheduling information sent by the base station side, on the subframe where the subframe interval is the increased terminal side uplink feedback subframe interval send data;
  • the base station side is configured to: increase a base station side uplink feedback subframe interval, send uplink scheduling information, and receive data sent by the terminal side in a subframe where the subframe interval is an increased terminal side uplink feedback subframe interval, And sending data verification information to and from the subframe in which the subframe interval is an increased base station side uplink feedback subframe interval;
  • the terminal side is further configured to: receive data verification information that is sent and received by the base station side in a subframe in which the subframe interval is increased on the base station side of the base station side.
  • the terminal side includes: a first uplink receiving module and a first uplink sending module, where
  • the first uplink receiving module is configured to: receive uplink scheduling information sent by the base station side, and data verification information sent by the base station side in a subframe where the subframe interval is an increased base station side uplink feedback subframe interval;
  • the first uplink sending module is configured to: receive, by the first uplink receiving module, the sending by the base station side After the scheduling information is sent, the data is sent on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval;
  • the base station side includes: a second uplink receiving module and a second uplink sending module, where the second uplink receiving module is configured to: receive, at the receiving terminal side, the sub-frame interval is an increased terminal side uplink feedback subframe interval The data sent on the frame;
  • the second uplink sending module is configured to: send uplink scheduling information, and send data verification information to and from a subframe of the base station side uplink feedback subframe interval in which the subframe interval is increased.
  • the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval of the system are greater than the terminal side downlink feedback subframe interval and the base station side downlink feedback when the maximum radius of the LTE communication coverage is less than or equal to lOOKm.
  • the terminal side further includes: a first downlink receiving module and a first downlink sending module, where the first downlink receiving module is configured to: receive downlink scheduling information sent by the base station side, and the subframe interval is The retransmitted data or new data sent by the subframe of the downlink base station side downlink feedback subframe interval is increased;
  • the first downlink sending module is configured to: after the first downlink receiving module receives the downlink scheduling information sent by the base station side, and perform feedback verification on the subframe where the subframe interval is the increased terminal side downlink feedback subframe interval Information
  • the base station side further includes: a second downlink receiving module and a second downlink sending module, where the second downlink receiving module is configured to: the receiving terminal side has a terminal side downlink feedback subframe interval with an increased subframe interval Check information fed back on the subframe;
  • the second downlink sending module is configured to: send downlink scheduling information, and send retransmission data or new data in a subframe where the subframe interval is an increased base station side downlink feedback subframe interval.
  • the terminal side of the embodiment of the present invention includes: a first uplink receiving module and a first uplink sending module, where
  • the first uplink receiving module is configured to: receive uplink scheduling information sent by the base station side, and data verification information sent by the base station side in a subframe where the subframe interval is an increased base station side uplink feedback subframe interval;
  • the first uplink sending module is configured to: after the first uplink receiving module receives the uplink scheduling information sent by the base station side, send the data on the subframe in which the subframe interval is the increased terminal side uplink feedback subframe interval.
  • a base station side is provided by the embodiment of the present invention, where the base station side includes: a second uplink receiving module and a second uplink sending module, where
  • the second uplink receiving module is configured to: receive data sent by the terminal side on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval;
  • the second uplink sending module is configured to: send uplink scheduling information, and send data verification information to and from a subframe of the base station side uplink feedback subframe interval in which the subframe interval is increased.
  • the embodiments of the present invention provide a method, system, and device for LTE-based ultra-long-range coverage communication, which can increase the time of HARQ processing on the terminal side, reduce the requirement for processing capability on the terminal side, and solve the problem of LTE in ultra-long distance. Covering the problem of failure of the HARQ retransmission mechanism when communicating.
  • 1 is a schematic diagram of durations of a radio frame and its subframes in the related art
  • FIG. 2 is a schematic diagram of LTE FDD uplink HARQ timing in the related art
  • FIG. 3 is a schematic diagram of LTE FDD downlink HARQ timing in the related art
  • FIG. 4 is a schematic diagram showing the relationship between the uplink and downlink timings of the LTE FDD system in the ideal case
  • FIG. 5 is a schematic diagram showing the relationship between the uplink and downlink of the LTE FDD system on the terminal side when the long-distance distance is 250 km in the related art;
  • FIG. 6 is a schematic flow chart of a method for implementing LTE super long-distance coverage communication according to an embodiment of the present invention
  • FIG. 7 is a schematic structural diagram of a system for implementing LTE super long-distance coverage communication according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of uplink HARQ timing according to application example 1 of the present invention.
  • 9 is a schematic diagram of downlink HARQ timing according to application example 1 of the present invention.
  • 10 is a schematic diagram of uplink and downlink timing of a terminal side according to an application example 1 of the present invention;
  • FIG. 11 is a schematic diagram of uplink HARQ timing according to application example 2 of the present invention.
  • FIG. 12 is a schematic diagram of downlink HARQ timing according to application example 2 of the present invention.
  • FIG. 13 is a schematic diagram of the uplink and downlink timing of the terminal side according to the second application example of the present invention. Preferred embodiment of the invention
  • the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval are increased, and after the terminal side receives the uplink scheduling information sent by the base station side, the subframe interval is an increased terminal side uplink feedback sub-interval.
  • Data is transmitted on the subframe of the frame interval, and the data check information sent by the base station side in the subframe where the subframe interval is the base station side uplink feedback subframe interval that has been increased is received.
  • the embodiment of the present invention implements a method for ultra long-distance coverage communication based on LTE. As shown in FIG. 6, the method includes the following steps:
  • Step 101 Increase the terminal-side uplink feedback subframe interval and the base station-side uplink feedback subframe interval.
  • the maximum radius of the LTE communication coverage may be increased by less than or equal to lOOKm according to the maximum radius of the LTE ultra-long-distance communication coverage.
  • the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than lOOKm;
  • the terminal side uplink feedback subframe interval is increased from 4 to 4+M, and the base station side uplink feedback subframe interval is changed from 8 to 8+H, where M and H are positive integers.
  • M and H are positive integers.
  • the value of H is greater than or equal to M, and the value of M and H is determined by the maximum radius covered by the communication. The larger the maximum radius of communication coverage, the larger the value of M and H.
  • Step 102 After receiving the uplink scheduling information sent by the base station side, the terminal side sends data on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval.
  • the terminal side after receiving the uplink scheduling information sent by the base station side on the subframe N, the terminal side transmits data on the subframe N+4+M.
  • Step 103 The terminal side receives the base station side uplink feedback sub-subsequent that the subframe interval is increased. Data check information sent by the subframe of the frame interval;
  • the terminal side receives data check information sent by the base station side in the subframe N+8+H.
  • the method may further include: increasing a downlink side feedback subframe interval of the terminal side and a downlink feedback subframe interval of the base station side; after receiving the downlink scheduling information sent by the base station side, the terminal side is downlinked at the terminal side where the subframe interval is increased. And feeding back the check information on the subframe of the subframe interval, and receiving the retransmission data or the new data sent by the base station side in the subframe where the subframe interval is the base station side downlink feedback subframe interval that has been increased;
  • the increasing the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval is: pre-determining the terminal side downlink feedback when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE super long distance communication coverage. a subframe interval and a base station side downlink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than lOOKm;
  • the number of downlink HARQ processes is increased from 8 to 8+L
  • the terminal downlink feedback subframe interval is increased from 4 to 4+L1
  • the base station side downlink feedback subframe interval is 8 is increased to 8+L2,
  • the values of L, L1 and L2 are determined by the maximum radius covered by the communication, and the maximum communication coverage. The larger the radius, the larger the values of L, L1 and L2.
  • the terminal side After receiving the downlink scheduling information sent by the base station side, the terminal side feeds back the verification information on the subframe in which the subframe interval is the terminal side downlink feedback subframe interval, which may be: the terminal side receiving the base station side in the subframe.
  • the verification information is fed back in subframe N+4+L1.
  • the retransmission data or the new data sent by the receiving base station side in the subframe where the subframe interval is the increased base station side downlink feedback subframe interval may be: the receiving base station side sends the subframe N+8+L2 Retransmit data or new data.
  • the embodiment of the present invention further provides a system for ultra-long-distance coverage communication based on LTE.
  • the terminal side uplink feedback subframe interval and the base station side uplink feedback sub-increment are increased in the system.
  • the frame interval, the system includes: a terminal side 21 and a base station side 22, wherein the terminal side 21 is configured to: after receiving the uplink scheduling information sent by the base station side 22, the subframe side uplink feedback subframe is increased in the subframe interval Sending data on the separated subframes, and receiving the data check signal sent by the base station side 22 in the subframe where the subframe interval is the base station side uplink feedback subframe interval that has been increased.
  • the base station side 22 is configured to: send uplink scheduling information, and receive data sent by the terminal side 21 on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval, and the subframe interval is increased. Data check information sent and received by the subframes of the base station side uplink feedback subframe interval;
  • the terminal side 21 may include: a first uplink receiving module 211 and a first uplink sending module.
  • the first uplink receiving module 211 is configured to: receive uplink scheduling information sent by the base station side 22 and data verification information sent by the base station side in a subframe where the subframe interval is an increased base station side uplink feedback subframe interval;
  • the first uplink sending module 212 is configured to: receive the base station side at the first uplink receiving module 211
  • the data is sent on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval.
  • the base station side 22 may include: a second uplink receiving module 221 and a second uplink sending module 222, where
  • the second uplink receiving module 221 is configured to: receive data sent by the terminal side 21 on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval;
  • the second uplink sending module 222 is configured to: send uplink scheduling information, and send data verification information to and from a subframe in which the subframe interval is an increased base station side uplink feedback subframe interval;
  • the pre-increase terminal-side uplink feedback sub-frame interval and the base station-side uplink feedback sub-frame interval are: pre-initiating the terminal-side uplink when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE ultra-long-distance communication coverage.
  • the feedback subframe interval and the base station side uplink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than 100Km.
  • the increased terminal side uplink feedback subframe interval may be 4+M, and the increased base station side uplink feedback subframe interval may be 8+H, where M and H are positive integers, and the value of H is The value of M and M is greater than or equal to the maximum radius of communication coverage. The larger the maximum radius of communication coverage, the larger the value of M and H.
  • the number of processes of the downlink HARQ is also increased in the system, and the downlink feedback sub-frame interval of the terminal side and the downlink feedback sub-frame interval of the base station side are increased.
  • the terminal side 21 may further include: a first downlink receiving module 213 and a first downlink sending module 214, where
  • the first downlink receiving module 213 is configured to: receive downlink scheduling information sent by the base station side 22, and retransmit data sent by the base station side 22 in a subframe where the subframe interval is an increased base station side downlink feedback subframe interval or New data;
  • the first downlink sending module 214 is configured to: after the first downlink receiving module 213 receives the downlink scheduling information sent by the base station side 22, on the subframe where the subframe interval is the increased terminal side downlink feedback subframe interval Feedback verification information;
  • the base station side 22 may further include: a second downlink receiving module 223 and a second downlink sending module 224, where
  • the second downlink receiving module 223 is configured to: receive, by the terminal side 21, the verification information fed back on the subframe of the terminal side downlink feedback subframe interval in which the subframe interval is increased;
  • the second downlink sending module 224 is configured to: send downlink scheduling information, and send and retransmit data or new data in a subframe where the subframe interval is an increased base station side downlink feedback subframe interval;
  • the increasing the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval is: pre-determining the terminal side downlink feedback when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE super long distance communication coverage.
  • the subframe interval and the base station side downlink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than 100Km.
  • the embodiment of the present invention further provides a terminal side.
  • the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval are increased in advance, and the terminal side 21 includes: a receiving module 211 and a first uplink sending module 212, where
  • the first uplink receiving module 211 is configured to: receive the uplink scheduling information sent by the base station side 22 and the data sent by the base station side in the subframe of the base station side uplink feedback subframe interval with the subframe interval being increased.
  • the first uplink sending module 212 is configured to: after the first uplink receiving module 211 receives the uplink scheduling information sent by the base station side 22, send data on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval. ;
  • the pre-increase terminal-side uplink feedback sub-frame interval and the base station-side uplink feedback sub-frame interval are: pre-initiating the terminal-side uplink when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE ultra-long-distance communication coverage.
  • the feedback subframe interval and the base station side uplink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than 100Km.
  • the increased terminal side uplink feedback subframe interval may be 4+M, and the increased base station side uplink feedback subframe interval may be 8+H, where M and H are positive integers, and the value of H is The value of M and M is greater than or equal to the maximum radius of communication coverage. The larger the maximum radius of communication coverage, the larger the value of M and H.
  • the number of processes of the downlink HARQ is also increased in the system, and the downlink feedback sub-frame interval of the terminal side and the downlink feedback sub-frame interval of the base station side are increased.
  • the terminal side 21 may further include: a first downlink receiving module 213 and a first downlink sending module.
  • the first downlink receiving module 213 is configured to: receive downlink scheduling information sent by the base station side 22, and retransmit data sent by the base station side 22 in a subframe where the subframe interval is an increased base station side downlink feedback subframe interval or New data;
  • the first downlink sending module 214 is configured to: receive the base station side at the first downlink receiving module 213.
  • the verification information is fed back on the subframe in which the subframe interval is the terminal downlink downlink subframe interval that has been increased;
  • the increasing the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval is: pre-determining the terminal side downlink feedback when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE super long distance communication coverage.
  • the subframe interval and the base station side downlink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than 100Km.
  • the number of the downlink HARQ processes is increased from 8 to 8+L, and the increased terminal side downlink feedback subframe interval may be 4+L1, and the increased base station side downlink feedback subframe interval may be
  • the embodiment of the present invention further provides a base station side.
  • the terminal side uplink feedback subframe interval and the base station side uplink feedback subframe interval are increased in advance, and the base station side 22 includes: a second uplink. a receiving module 221 and a second uplink sending module 222, where
  • the second uplink receiving module 221 is configured to: receive data sent by the terminal side 21 on a subframe in which the subframe interval is an increased terminal side uplink feedback subframe interval;
  • the second uplink sending module 222 is configured to: send uplink scheduling information, and send data verification information to and from a subframe in which the subframe interval is an increased base station side uplink feedback subframe interval;
  • the pre-increase terminal-side uplink feedback sub-frame interval and the base station-side uplink feedback sub-frame interval are: pre-initiating the terminal-side uplink when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE ultra-long-distance communication coverage.
  • the feedback subframe interval and the base station side uplink feedback subframe interval; the maximum radius of the LTE ultra long distance communication coverage is greater than 100Km.
  • the increased terminal side uplink feedback subframe interval may be 4+M, and the increased base station side uplink feedback subframe interval may be 8+H, where M and H are positive integers, and the value of H is The value of M and M is greater than or equal to the maximum radius of communication coverage. The larger the maximum radius of communication coverage, the larger the value of M and H.
  • the number of processes of the downlink HARQ is also increased in the system, and the downlink feedback sub-frame interval of the terminal side and the downlink feedback sub-frame interval of the base station side are increased.
  • the base station side 22 may further include: a second downlink receiving module 223 and a second downlink sending module 224, where
  • the second downlink receiving module 223 is configured to: receive, by the terminal side 21, the verification information fed back on the subframe of the terminal side downlink feedback subframe interval in which the subframe interval is increased;
  • the second downlink sending module 224 is configured to: send downlink scheduling information, and send and retransmit data or new data in a subframe where the subframe interval is an increased base station side downlink feedback subframe interval;
  • the increasing the terminal side downlink feedback subframe interval and the base station side downlink feedback subframe interval is: pre-determining the terminal side downlink feedback when the maximum radius of the LTE communication coverage is less than or equal to lOOKm according to the maximum radius of the LTE super long distance communication coverage. Subframe interval and base station side downlink feedback subframe interval;
  • LTE ultra long-distance communication is greater than 100Km.
  • the LTE FDD is used
  • the coverage radius of the cell is 250 km
  • the transmission delay of the signal is about 1.66 ms.
  • the terminal processing normal processing sequence is shown in Figure 5.
  • the terminal hardware processing delay is set to 0.2ms
  • the terminal side uplink timing will be processed by 1.86ms
  • the terminal side processing time is shortened to 2.14ms.
  • the actual processing time on the terminal side is around 1.14ms.
  • the uplink feedback subframe interval of the terminal side is changed from 4 to 6, that is, the corresponding M value is 2, and the uplink feedback subframe interval of the base station side is changed from 8 to 10, that is, the corresponding H value is 2
  • the increased uplink HARQ timing is as shown in FIG. 8.
  • the base station side transmits uplink scheduling information DCI0 in subframe 0, and the terminal side transmits data in subframe 6 according to the terminal side uplink feedback subframe interval of 6, and the base station side
  • the air interface receives the data, and sends ACK/NACK information in the subframe 0 of the next frame according to the uplink feedback subframe interval of the base station side.
  • the number of downlink HARQ processes is changed from 8 to 10, that is, the corresponding L value.
  • the downlink side feedback subframe interval of the terminal side is changed from 4 ⁇ ' ⁇ to 6, that is, the corresponding L1 value is 2
  • the base station side downlink feedback subframe interval is changed from 8 to 10, that is, the corresponding L2 takes the value 2, and is modified.
  • the downlink downlink HARQ timing is as shown in FIG. 9.
  • the base station side transmits downlink scheduling information in subframe 0 through the air interface, and the terminal side sends ACK/NACK information on the subframe 6 according to the terminal side uplink feedback subframe interval of 6, and the base station side Receiving the ACK/NACK message at the air interface
  • base station side according to the downlink feedback sub-frame interval is 10, the subframe 0 of the next frame downward the retransmission data or new data.
  • the processing timing of the terminal side is as shown in FIG. 10, and the uplink advance amount of the terminal side is still 1.86 ms, but the terminal processing time is increased from 2.14 ms to 4.14 ms before the tampering.
  • the problem of shortening the processing time on the terminal side is fundamentally solved.
  • LTE FDD Long Term Evolution
  • the coverage radius of the cell is 150 km
  • the transmission delay of the signal is lms
  • the terminal hardware processing delay is set to 0.2 ms.
  • the uplink HARQ feedback subframe interval of the terminal side is changed from 4 to 5, that is, the corresponding M value is 1 and the uplink feedback subframe interval of the base station side is changed from 8 to 9, that is, corresponding The value of H is 1 and the increased uplink HARQ timing is as shown in FIG. 11.
  • the base station side transmits uplink scheduling information DCI0 in subframe 0, and the terminal side transmits 5 subframes according to the terminal side uplink feedback subframe interval. Data, the base station side receives the data on the air interface, and sends ACK/NACK information in and out of the subframe 9 according to the uplink feedback subframe interval of the base station side.
  • the number of downlink HARQ processes is changed from 8 to 9, that is, corresponding to L.
  • the value of the downlink feedback sub-frame interval is changed from 4 to 5, that is, the corresponding L1 value is 1 and the downlink feedback interval of the base station is changed from 8 to 9, that is, the corresponding L2 value is 1, and the increased downlink is
  • the base station side transmits downlink scheduling information in subframe 0 through the air interface
  • the terminal side transmits ACK/NACK information in subframe 5 according to the uplink feedback subframe interval of the terminal side
  • the base station side receives the air interface.
  • the ACK/NA The CK information is transmitted and retransmitted in the subframe 9 according to the base station side downlink feedback subframe interval of 9, and the new data is transmitted.
  • the terminal-side processing sequence of the present embodiment is as shown in FIG. 13, and it can be clearly seen that the present embodiment compensates for the shortening of the terminal-side processing caused by the transmission delay, and ensures normal processing on the terminal side.
  • the embodiment of the invention can increase the time of the HARQ processing on the terminal side, reduce the requirement on the processing capability of the terminal side, and solve the problem that the HARQ retransmission mechanism fails when the LTE is in the super long distance coverage communication.

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Abstract

一种基于LTE的超远距离覆盖通信的方法、系统和设备，增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔；终端侧接收基站侧发送的上行调度信息后，在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发送数据；终端侧接收基站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信息。

Description

一种基于 LTE的超远距离覆盖通信的方法、 系统及设备
技术领域
本发明涉及长期演进（LTE )技术， 尤其涉及一种基于 LTE的超远距离 覆盖通信的方法、 系统及设备。
背景技术
LTE 是以正交频分复用 （ OFDM , Orthogonal Frequency Division Multiplexing ) /频分多址 ( FDMA, Frequency Division Multiplexing Access )为 核心的技术， 被看作 "准 4G" 技术。 与 2G/3G技术相比， LTE具有提供更 高的数据率， 提高小区容量， 降低系统延迟， 支持最大 100km半径的小区覆 盖等优势， 因此越来越得到通信运营商的青睐， 应用范围从高速列车通信扩 展到了地对空通信， 如飞机通信系统。
LTE物理层上行釆用了同步混合自动重传请求（ HARQ, Hybird Automatic Repeat Request )机制， 即只能在固定子帧间隔的子帧上发送重传数据； 而下 行 HARQ 为异步 HARQ, 即基站侧每次调度的时候明确告诉终端侧使用的 HARQ进程号， 所以重传数据时可以灵活调度。
在 HARQ实现过程中， 对时序有严格的要求。
图 1描述了一个无线帧及其子帧的时长， 可以看出， 一个无线帧的时长 Tf=10ms, 包括 10个子帧， 一个子帧的时长 T=lms。
图 2描述了 LTE频分双工 （FDD, Frequency Division Duplexing )上行 HARQ时序， 上行调度信息在子帧 N发送， 其中 N的取值范围为 0到 9的整 数， 基站侧在子帧 N+4即子帧间隔为 4的子帧上接收终端侧发送的数据， 终 端侧将在子帧 N+8即子帧间隔为 8的子帧上接收基站侧反馈的校验信息，如： ACK/NACK信息。
图 3描述了 LTE FDD下行 HARQ时序， 基站侧在子帧 N发送下行调度 信息， 在子帧 N+4即子帧间隔为 4的子帧上接收终端侧反馈的校验信息， 最 快可以在子帧 N+8即子帧间隔为 8的子帧上下发重传数据。
1 LTE系统中， 所有终端侧的时序都要和基站侧的保持一致， 因此为了弥 补信号传输时延， 终端侧上行必须提前进行处理， 从而保证和基站侧空口时 序一致。 终端侧上行的处理提前量主要取决于终端侧距离基站侧的距离， 距 离基站侧的距离越远， 提前量越大。
图 4描述了 LTE FDD系统在理想情况下， 即没有信号传输时延，硬件处 理时延设定为 0.2ms时， 即终端侧上行和下行处理时序相差 0.2ms, 从图中可 以看到， 终端侧从接收数据到处理完毕时间为 3.8ms。
图 5描述了 LTE FDD在超远距离 250km时， 终端侧上行和下行处理时 序关系， 终端侧硬件处理时延设定为 0.2ms, 信号的传输时延值约为 1.66ms, 因此终端侧上行提前量为 1.86ms, 而终端侧从接收数据到处理完毕的时间缩 短为 2.14ms。
以上分析可以得出， 对于超远距离 （大于 100km半径）覆盖通信， 比如 跨洋国际航线， 跨越杳无人烟的沙漠或森林的航线等， 为了满足系统 HARQ 处理时序的要求， 终端侧的实际处理时间随着传播距离变长而缩短， 因此为 了应对终端侧处理时间缩短的问题， 必须增加成本投入， 提高终端侧的处理 能力。但终端侧处理时间缩短到一定程度时， 必然会超出终端侧处理的能力， 导致整个系统无法正常工作。 因此如何在超远距离覆盖中应用 LTE技术进行 通信成了亟待解决的难题。 发明内容
有鉴于此，本发明实施例提供一种基于 LTE的超远距离覆盖通信的方法、 系统及设备， 解决 LTE在超远距离覆盖通信时 HARQ重传机制失效的问题。
本发明实施例提供的一种基于 LTE的超远距离覆盖通信的方法， 包括： 增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔；
终端侧接收基站侧发送的上行调度信息后， 在子帧间隔为已增大的终端 侧上行反馈子帧间隔的子帧上发送数据；
终端侧接收基站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子 帧上下发的数据校验信息。 较佳地， 上述方案中， 所述增大终端侧上行反馈子帧间隔和基站侧上行 反馈子帧间隔包括： 预先根据 LTE超远距离通信覆盖的最大半径， 增大 LTE 通信覆盖的最大半径小于等于 1 OOKm时的终端侧上行反馈子帧间隔和基站侧 上行反馈子帧间隔；
所述 LTE超远距离通信覆盖的最大半径大于 100Km。
较佳地， 上述方案中， 所述增大终端侧上行反馈子帧间隔和基站侧上行 反馈子帧间隔包括： 针对 LTE频分双工 （FDD ) 的上行混合自动重传请求 ( HARQ ) 时序， 将终端侧上行反馈子帧间隔由 4增大为 4+M, 将基站侧上 行反馈子帧间隔由 8增大改为 8+H, 其中 M和 H为正整数， 且 H大于等于 M。
较佳地， 上述方案中， 所述终端侧接收基站侧发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发送数据， 为： 终 端侧接收基站侧在子帧 N上发送的上行调度信息后， 在子帧 N+4+M上发送 数据。
较佳地， 上述方案中， 所述终端侧接收基站侧在子帧间隔为已增大的基 站侧上行反馈子帧间隔的子帧上下发的数据校验信息为： 终端侧接收基站侧 在子帧 N+8+H上下发的数据校验信息。
较佳地， 上述方案中， 该方法还包括： 增大终端侧下行反馈子帧间隔和 基站侧下行反馈子帧间隔； 终端侧接收基站侧发送的下行调度信息后， 在子 帧间隔为已增大的终端侧下行反馈子帧间隔的子帧上反馈校验信息， 并接收 基站侧在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的重传 数据或新数据。
较佳地， 上述方案中， 所述增大终端侧下行反馈子帧间隔和基站侧下行 反馈子帧间隔包括： 预先根据 LTE超远距离通信覆盖的最大半径， 增大 LTE 通信覆盖的最大半径小于等于 lOOKm时的终端侧下行反馈子帧间隔和基站侧 下行反馈子帧间隔；
所述 LTE超远距离通信覆盖的最大半径大于 100Km。
较佳地， 上述方案中， 所述增大终端侧下行反馈子帧间隔和基站侧下行 反馈子帧间隔包括： 针对 LTE FDD的下行 HARQ时序 , 将下行 HARQ的进 程数目由 8增加为 8+L, 将终端下行反馈子帧间隔由 4增大为 4+L1 , 将基站 侧下行反馈子帧间隔由 8增大为 8+L2,其中 L、 L1和 L2为正整数，且 L=L2, L2大于等于 Ll。
较佳地， 上述方案中， 所述终端侧接收基站侧发送的下行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔的子帧上反馈校验信息，为： 终端侧接收基站侧在子帧 N上发送的下行调度信息后， 在子帧 N+4+L1上反 馈校验信息。
较佳地， 上述方案中， 所述接收基站侧在子帧间隔为已增大的基站侧下 行反馈子帧间隔的子帧上下发的重传数据或新数据为： 接收基站侧在子帧 N+8+L2上下发的重传数据或新数据。
本发明实施例提供的一种基于 LTE的超远距离覆盖通信的系统， 该系统 包括： 终端侧和基站侧， 其中，
所述终端侧， 设置为： 增大终端侧上行反馈子帧间隔， 接收所述基站侧 发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的 子帧上发送数据；
所述基站侧， 设置为： 增大基站侧上行反馈子帧间隔， 发送上行调度信 息， 接收终端侧在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发 送的数据， 并在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发 数据校验信息；
所述终端侧还设置为： 接收所述基站侧在子帧间隔为已增大的基站侧上 行反馈子帧间隔的子帧上下发的数据校验信息。
较佳地， 上述方案中， 所述终端侧包括： 第一上行接收模块和第一上行 发送模块， 其中，
第一上行接收模块， 设置为： 接收基站侧发送的上行调度信息和基站侧 在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信 息；
第一上行发送模块， 设置为： 在第一上行接收模块接收基站侧发送的上 行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发 送数据；
所述基站侧包括： 第二上行接收模块和第二上行发送模块， 其中， 第二上行接收模块， 设置为： 接收终端侧在子帧间隔为已增大的终端侧 上行反馈子帧间隔的子帧上发送的数据；
第二上行发送模块， 设置为： 发送上行调度信息， 在子帧间隔为已增大 的基站侧上行反馈子帧间隔的子帧上下发数据校验信息。
较佳地， 上述方案中， 该系统的终端侧下行反馈子帧间隔和基站侧下行 反馈子帧间隔大于 LTE通信覆盖的最大半径小于等于 lOOKm时的终端侧下 行反馈子帧间隔和基站侧下行反馈子帧间隔；
所述终端侧还包括： 第一下行接收模块和第一下行发送模块， 其中， 第一下行接收模块， 设置为： 接收基站侧发送的下行调度信息和基站侧 在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的重传数据或 新数据；
第一下行发送模块， 设置为： 在第一下行接收模块接收基站侧发送的下 行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔的子帧上反 馈校验信息；
所述基站侧还包括： 第二下行接收模块和第二下行发送模块， 其中， 第二下行接收模块， 设置为： 接收终端侧在子帧间隔为已增大的终端侧 下行反馈子帧间隔的子帧上反馈的校验信息；
第二下行发送模块， 设置为： 发送下行调度信息， 在子帧间隔为已增大 的基站侧下行反馈子帧间隔的子帧上下发重传数据或新数据。
本发明实施例提供的一种终端侧， 该终端侧包括： 第一上行接收模块和 第一上行发送模块， 其中，
第一上行接收模块， 设置为： 接收基站侧发送的上行调度信息和基站侧 在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信 息； 第一上行发送模块， 设置为： 在第一上行接收模块接收基站侧发送的上 行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发 送数据。
本发明实施例提供的一种基站侧， 该基站侧包括： 第二上行接收模块和 第二上行发送模块， 其中，
第二上行接收模块， 设置为： 接收终端侧在子帧间隔为已增大的终端侧 上行反馈子帧间隔的子帧上发送的数据；
第二上行发送模块， 设置为： 发送上行调度信息， 在子帧间隔为已增大 的基站侧上行反馈子帧间隔的子帧上下发数据校验信息。
本发明实施例提供了一种基于 LTE的超远距离覆盖通信的方法、 系统及 设备， ， 能够增加终端侧 HARQ处理的时间， 降低了对终端侧处理能力的要 求， 解决了 LTE在超远距离覆盖通信时 HARQ重传机制失效的问题。 附图概述
图 1为相关技术中一个无线帧及其子帧的时长示意图；
图 2为相关技术中 LTE FDD上行 HARQ时序示意图；
图 3为相关技术中 LTE FDD下行 HARQ时序示意图；
图 4为相关技术中 LTE FDD系统在理想情况下终端侧上下行时序关系示 意图；
图 5为相关技术中 LTE FDD系统在超远距离 250km时终端侧上下行时 序关系示意图；
图 6为本发明实施例的实现基于 LTE超远距离覆盖通信的方法流程示意 图；
图 7为本发明实施例的实现基于 LTE超远距离覆盖通信的系统结构示意 图；
图 8为本发明应用示例一的上行 HARQ时序示意图；
图 9为本发明应用示例一的下行 HARQ时序示意图； 图 10为本发明应用示例一的终端侧上下行时序示意图；
图 11为本发明应用示例二的上行 HARQ时序示意图；
图 12为本发明应用示例二的下行 HARQ时序示意图；
图 13为本发明应用示例二的终端侧上下行时序示意图。 本发明的较佳实施方式
下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是， 在 不冲突的情况下， 本申请中的实施例及实施例中的特征可以相互任意组合。
本发明实施例中， 增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧 间隔， 终端侧接收基站侧发送的上行调度信息后， 在子帧间隔为已增大的终 端侧上行反馈子帧间隔的子帧上发送数据， 并接收基站侧在子帧间隔为已增 大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信息。
本发明实施例实现一种基于 LTE的超远距离覆盖通信的方法， 如图 6所 示， 该方法包括以下几个步骤：
步骤 101 : 增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔； 该步骤中， 可预先根据 LTE超远距离通信覆盖的最大半径，增大 LTE通 信覆盖的最大半径小于等于 lOOKm时的终端侧上行反馈子帧间隔和基站侧上 行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 lOOKm;
针对 LTE FDD的上行 HARQ时序， 将终端侧上行反馈子帧间隔由 4增 大为 4+M, 将基站侧上行反馈子帧间隔由 8增大改为 8+H, 其中 M和 H为 正整数，且 H取值大于等于 M, M和 H取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越大， M和 H取值越大。
步骤 102: 终端侧接收基站侧发送的上行调度信息后， 在子帧间隔为已 增大的终端侧上行反馈子帧间隔的子帧上发送数据；
该步骤中， 终端侧接收基站侧在子帧 N上发送的上行调度信息后， 在子 帧 N+4+M上发送数据。
步骤 103: 终端侧接收基站侧在子帧间隔为已增大的基站侧上行反馈子 帧间隔的子帧上下发的数据校验信息；
该步骤中， 终端侧接收基站侧在子帧 N+8+H上下发的数据校验信息。 上述方法中， 还可以包括： 增大终端侧下行反馈子帧间隔和基站侧下行 反馈子帧间隔； 终端侧接收基站侧发送的下行调度信息后， 在子帧间隔为已 增大的终端侧下行反馈子帧间隔的子帧上反馈校验信息， 并接收基站侧在子 帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的重传数据或新数 据；
所述增大终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔为： 预先 根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径小于 等于 lOOKm时的终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 lOOKm;
一般为： 针对 LTE FDD的下行 HARQ时序， 将下行 HARQ的进程数目 由 8增加为 8+L, 将终端下行反馈子帧间隔由 4增大为 4+L1 , 将基站侧下行 反馈子帧间隔由 8增大为 8+L2, 其中 L、 L1和 L2为正整数， 且 L=L2, L2 取值大于等于 LI , L、 L1和 L2取值大小由通信覆盖的最大半径决定， 通信 覆盖的最大半径越大， L、 L1和 L2取值越大。
所述终端侧接收基站侧发送的下行调度信息后， 在子帧间隔为已增大的 终端侧下行反馈子帧间隔的子帧上反馈校验信息， 可以为： 终端侧接收基站 侧在子帧 N上发送的下行调度信息后， 在子帧 N+4+L1上反馈校验信息。
所述接收基站侧在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧 上下发的重传数据或新数据， 可以为： 接收基站侧在子帧 N+8+L2上下发的 重传数据或新数据。
为了实现上述方法， 本发明实施例还提供一种基于 LTE的超远距离覆盖 通信的系统， 如图 7所示， 在该系统中预先增大终端侧上行反馈子帧间隔和 基站侧上行反馈子帧间隔， 该系统包括： 终端侧 21和基站侧 22, 其中， 终端侧 21 , 设置为： 接收基站侧 22发送的上行调度信息后， 在子帧间 隔为已增大的终端侧上行反馈子帧间隔的子帧上发送数据， 并接收基站侧 22 在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信
8 息；
基站侧 22, 设置为： 发送上行调度信息， 接收终端侧 21在子帧间隔为 已增大的终端侧上行反馈子帧间隔的子帧上发送的数据， 并在子帧间隔为已 增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信息；
所述终端侧 21 可以包括： 第一上行接收模块 211 和第一上行发送模块
212, 其中，
第一上行接收模块 211 , 设置为： 接收基站侧 22发送的上行调度信息和 基站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据 校验信息；
第一上行发送模块 212, 设置为： 在第一上行接收模块 211接收基站侧
22发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔 的子帧上发送数据；
所述基站侧 22可以包括： 第二上行接收模块 221 和第二上行发送模块 222, 其中，
第二上行接收模块 221 , 设置为： 接收终端侧 21在子帧间隔为已增大的 终端侧上行反馈子帧间隔的子帧上发送的数据；
第二上行发送模块 222, 设置为： 发送上行调度信息， 在子帧间隔为已 增大的基站侧上行反馈子帧间隔的子帧上下发数据校验信息；
所述预先增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔为： 预先根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径 小于等于 lOOKm时的终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 100Km。
所述已增大的终端侧上行反馈子帧间隔可以为 4+M, 所述已增大的基站 侧上行反馈子帧间隔可以为 8+H, 其中 M和 H为正整数， 且 H取值大于等 于 M, M和 H取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越 大， M和 H取值越大。
较佳的， 在该系统中还预先增加下行 HARQ的进程数目， 并增大终端侧 下行反馈子帧间隔和基站侧下行反馈子帧间隔； 所述终端侧 21可以还包括：第一下行接收模块 213和第一下行发送模块 214, 其中，
第一下行接收模块 213 , 设置为： 接收基站侧 22发送的下行调度信息和 基站侧 22 在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的 重传数据或新数据；
第一下行发送模块 214, 设置为： 在第一下行接收模块 213接收基站侧 22发送的下行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔 的子帧上反馈校验信息；
所述基站侧 22还可以包括：第二下行接收模块 223和第二下行发送模块 224, 其中，
第二下行接收模块 223 , 设置为： 接收终端侧 21在子帧间隔为已增大的 终端侧下行反馈子帧间隔的子帧上反馈的校验信息；
第二下行发送模块 224, 设置为： 发送下行调度信息， 在子帧间隔为已 增大的基站侧下行反馈子帧间隔的子帧上下发重传数据或新数据；
所述增大终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔为： 预先 根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径小于 等于 lOOKm时的终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 100Km。
所述下行 HARQ的进程数目由 8增加为 8+L, 所述已增大的终端侧下行 反馈子帧间隔可以为 4+L1 , 所述已增大的基站侧下行反馈子帧间隔可以为 8+L2, 其中 L、 L1和 L2为正整数， 且 L=L2, L2大于等于 LI , L、 L1和 L2 取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越大， L、 L1 和 L2取值越大。
基于上述系统， 本发明实施例还提供一种终端侧， 如图 7所示， 预先增 大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔， 所述终端侧 21 包 括： 第一上行接收模块 211和第一上行发送模块 212, 其中，
第一上行接收模块 211 , 设置为： 接收基站侧 22发送的上行调度信息和 基站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据
10 校验信息；
第一上行发送模块 212, 设置为： 在第一上行接收模块 211接收基站侧 22发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔 的子帧上发送数据；
所述预先增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔为： 预先根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径 小于等于 lOOKm时的终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 100Km。
所述已增大的终端侧上行反馈子帧间隔可以为 4+M, 所述已增大的基站 侧上行反馈子帧间隔可以为 8+H, 其中 M和 H为正整数， 且 H取值大于等 于 M, M和 H取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越 大， M和 H取值越大。
较佳的， 在该系统中还预先增加下行 HARQ的进程数目， 并增大终端侧 下行反馈子帧间隔和基站侧下行反馈子帧间隔；
所述终端侧 21还可以包括：第一下行接收模块 213和第一下行发送模块
214, 其中，
第一下行接收模块 213 , 设置为： 接收基站侧 22发送的下行调度信息和 基站侧 22 在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的 重传数据或新数据；
第一下行发送模块 214, 设置为： 在第一下行接收模块 213接收基站侧
22发送的下行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔 的子帧上反馈校验信息；
所述增大终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔为： 预先 根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径小于 等于 lOOKm时的终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 100Km。
所述下行 HARQ的进程数目由 8增加为 8+L, 所述已增大的终端侧下行 反馈子帧间隔可以为 4+L1 , 所述已增大的基站侧下行反馈子帧间隔可以为
11 8+L2, 其中 L、 LI和 L2为正整数， 且 L=L2, L2大于等于 LI , L、 L1和 L2 取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越大， L、 L1 和 L2取值越大。
基于上述系统， 本发明实施例还提供一种基站侧， 如图 7所示， 预先增 大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔， 所述基站侧 22 包 括： 第二上行接收模块 221和第二上行发送模块 222, 其中，
第二上行接收模块 221， 设置为： 接收终端侧 21在子帧间隔为已增大的 终端侧上行反馈子帧间隔的子帧上发送的数据；
第二上行发送模块 222, 设置为： 发送上行调度信息， 在子帧间隔为已 增大的基站侧上行反馈子帧间隔的子帧上下发数据校验信息；
所述预先增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔为： 预先根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径 小于等于 lOOKm时的终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔； 所述 LTE超远距离通信覆盖的最大半径大于 100Km。
所述已增大的终端侧上行反馈子帧间隔可以为 4+M, 所述已增大的基站 侧上行反馈子帧间隔可以为 8+H, 其中 M和 H为正整数， 且 H取值大于等 于 M, M和 H取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越 大， M和 H取值越大。
较佳的， 在该系统中还预先增加下行 HARQ的进程数目， 并增大终端侧 下行反馈子帧间隔和基站侧下行反馈子帧间隔；
所述基站侧 22还可以包括：第二下行接收模块 223和第二下行发送模块 224, 其中，
第二下行接收模块 223 , 设置为： 接收终端侧 21在子帧间隔为已增大的 终端侧下行反馈子帧间隔的子帧上反馈的校验信息；
第二下行发送模块 224, 设置为： 发送下行调度信息， 在子帧间隔为已 增大的基站侧下行反馈子帧间隔的子帧上下发重传数据或新数据；
所述增大终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔为： 预先 根据 LTE超远距离通信覆盖的最大半径，增大 LTE通信覆盖的最大半径小于 等于 lOOKm时的终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔； 所述
12 LTE超远距离通信覆盖的最大半径大于 100Km。
所述下行 HARQ的进程数目由 8增加为 8+L, 所述已增大的终端侧下行 反馈子帧间隔可以为 4+L1 , 所述已增大的基站侧下行反馈子帧间隔可以为 8+L2, 其中 L、 L1和 L2为正整数， 且 L=L2, L2大于等于 LI , L、 L1和 L2 取值大小由通信覆盖的最大半径决定， 通信覆盖的最大半径越大， L、 L1 和 L2取值越大。
下面结合应用示例详细说明本发明实施例的实现过程和原理。
应用示例一
本实施例釆用 LTE FDD, 小区的覆盖半径为 250km, 信号的传输时延约 为 1.66ms。
终端侧正常处理时序如图 5所示，终端硬件处理延时设定为 0.2ms,终端 侧上行时序将提前 1.86ms处理， 终端侧处理的时间缩短为 2.14ms, 其中接收 完数据需要 lms, 因此终端侧实际处理时间在 1.14ms左右。
釆用本发明实施例的方法， 终端侧上行反馈子帧间隔由 4修改为 6, 即 对应 M取值为 2,基站侧上行反馈子帧间隔由 8修改为 10, 即对应 H取值为 2, 增大后的上行 HARQ时序如图 8所示， 基站侧在子帧 0发送上行调度信 息 DCI0, 终端侧根据终端侧上行反馈子帧间隔为 6, 在子帧 6上发送数据， 基站侧在空口接收所述数据， 并根据基站侧上行反馈子帧间隔为 10, 在下一 帧的子帧 0上下发 ACK/NACK信息； 同样的， 下行 HARQ进程数目由 8修 改为 10, 即对应 L取值为 2, 终端侧下行反馈子帧间隔由 4 ^ί'爹改为 6, 即对 应 L1取值为 2, 基站侧下行反馈子帧间隔由 8修改为 10, 即对应 L2取值为 2, 修改后的下行 HARQ时序如图 9所示， 基站侧通过空口在子帧 0发送下 行调度信息， 终端侧根据终端侧上行反馈子帧间隔为 6 , 在子帧 6 上发送 ACK/NACK信息， 基站侧在空口接收所述 ACK/NACK信息， 并根据基站侧 下行反馈子帧间隔为 10, 在下一帧的子帧 0上下发重传数据或新数据。
本实施例通过 ^ί'爹改 HARQ时序后， 终端侧处理时序如图 10所示， 终端 侧上行提前量仍为 1.86ms,但相比较爹改前， 终端处理时间由 2.14ms增加为 4.14ms, 从根本上解决了终端侧处理时间缩短的问题。
应用示例二
13 本实施例釆用 LTE FDD, 小区的覆盖半径为 150km, 信号的传输时延为 lms, 终端硬件处理延时设定为 0.2ms。
考虑到小区的覆盖半径和信号的传输时延， 终端侧上行 HARQ反馈子帧 间隔由 4修改为 5 , 即对应 M取值为 1 , 基站侧上行反馈子帧间隔由 8修改 为 9, 即对应 H取值为 1 , 增大后的上行 HARQ时序如图 11所示， 基站侧在 子帧 0发送上行调度信息 DCI0, 终端侧根据终端侧上行反馈子帧间隔为 5, 在子帧 5上发送数据， 基站侧在空口接收所述数据， 并根据基站侧上行反馈 子帧间隔为 9, 在子帧 9上下发 ACK/NACK信息； 同样的， 下行 HARQ进程 数目由 8修改为 9, 即对应 L取值为 1 , 终端侧下行反馈子帧间隔由 4修改为 5, 即对应 L1取值为 1 , 基站侧下行反馈间隔由 8修改为 9, 即对应 L2取值 为 1 , 增大后的下行 HARQ时序如图 12所示，基站侧通过空口在子帧 0发送 下行调度信息， 终端侧根据终端侧上行反馈子帧间隔为 5, 在子帧 5上发送 ACK/NACK信息， 基站侧在空口接收所述 ACK/NACK信息， 并根据基站侧 下行反馈子帧间隔为 9, 在子帧 9上下发重传数据或新数据。
本实施例终端侧处理时序如图 13所示， 可以艮清楚的看到， 本实施例弥 补了由传输时延造成终端侧处理缩短 lms的时间，保证了终端侧的正常处理。
以上所述， 仅为本发明的较佳实施例而已， 并非用于限定本发明的保护 范围。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 所述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。
工业实用性
本发明实施例能够增加终端侧 HARQ处理的时间， 降低了对终端侧处理 能力的要求，解决了 LTE在超远距离覆盖通信时 HARQ重传机制失效的问题。
14

Claims

权 利 要 求 书
1、 一种基于长期演进（LTE )的超远距离覆盖通信的方法， 该方法包括： 增大终端侧上行反馈子帧间隔和基站侧上行反馈子帧间隔；
终端侧接收基站侧发送的上行调度信息后， 在子帧间隔为已增大的终端 侧上行反馈子帧间隔的子帧上发送数据；
所述终端侧接收所述基站侧在已增大的基站侧上行反馈子帧间隔的子帧 上下发的数据校验信息。
2、 根据权利要求 1所述的方法， 其中， 所述增大终端侧上行反馈子帧间 隔和基站侧上行反馈子帧间隔包括:根据 LTE超远距离通信覆盖的最大半径， 增大 LTE通信覆盖的最大半径小于等于 lOOKm时的终端侧上行反馈子帧间 隔和基站侧上行反馈子帧间隔；
所述 LTE超远距离通信覆盖的最大半径大于 100Km。
3、 根据权利要求 1所述的方法， 其中， 所述增大终端侧上行反馈子帧间 隔和基站侧上行反馈子帧间隔包括： 针对 LTE频分双工（FDD ) 的上行混合 自动重传请求（HARQ )时序， 将终端侧上行反馈子帧间隔由 4增大为 4+M, 将基站侧上行反馈子帧间隔由 8增大改为 8+H, 其中 M和 H为正整数， 且 H 大于等于M。
4、 根据权利要求 3所述的方法， 其中， 所述终端侧接收基站侧发送的上 行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发 送数据， 包括： 终端侧接收基站侧在子帧 N上发送的上行调度信息后， 在子 帧 N+4+M上发送数据。
5、 根据权利要求 3所述的方法， 其中， 所述终端侧接收基站侧在子帧间 隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校验信息包括： 终端侧接收基站侧在子帧 N+8+H上下发的数据校验信息。
6、 根据权利要求 1所述的方法， 该方法还包括： 增大终端侧下行反馈子 帧间隔和基站侧下行反馈子帧间隔； 终端侧接收基站侧发送的下行调度信息 后，在子帧间隔为已增大的终端侧下行反馈子帧间隔的子帧上反馈校验信息， 并接收基站侧在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发
15 的重传数据或新数据。
7、 根据权利要求 6所述的方法， 其中， 所述增大终端侧下行反馈子帧间 隔和基站侧下行反馈子帧间隔包括:根据 LTE超远距离通信覆盖的最大半径， 增大 LTE通信覆盖的最大半径小于等于 lOOKm时的终端侧下行反馈子帧间 隔和基站侧下行反馈子帧间隔；
所述 LTE超远距离通信覆盖的最大半径大于 100Km。
8、 根据权利要求 6所述的方法， 其中， 所述增大终端侧下行反馈子帧间 隔和基站侧下行反馈子帧间隔包括： 针对 LTE FDD的下行 HARQ时序 , 将 下行 HARQ的进程数目由 8增加为 8+L, 将终端下行反馈子帧间隔由 4增大 为 4+L1 , 将基站侧下行反馈子帧间隔由 8增大为 8+L2, 其中 L、 L1和 L2为 正整数， 且 L=L2, L2大于等于 Ll。
9、 根据权利要求 8所述的方法， 其中， 所述终端侧接收基站侧发送的下 行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔的子帧上反 馈校验信息， 包括： 终端侧接收基站侧在子帧 N上发送的下行调度信息后， 在子帧 N+4+L1上反馈校验信息。
10、 根据权利要求 8所述的方法， 其中， 所述接收基站侧在子帧间隔为 已增大的基站侧下行反馈子帧间隔的子帧上下发的重传数据或新数据为： 接 收基站侧在子帧 N+8+L2上下发的重传数据或新数据。
11、 一种基于长期演进（LTE ) 的超远距离覆盖通信的系统， 该系统包 括： 终端侧和基站侧， 其中，
所述终端侧， 设置为： 增大终端侧上行反馈子帧间隔， 接收所述基站侧 发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的 子帧上发送数据；
所述基站侧， 设置为： 增大基站侧上行反馈子帧间隔， 发送上行调度信 息， 接收终端侧在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧上发 送的数据， 并在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发 数据校验信息；
所述终端侧还设置为： 接收所述基站侧在子帧间隔为已增大的基站侧上
16 行反馈子帧间隔的子帧上下发的数据校验信息。
12、 根据权利要求 11所述的系统， 其中， 所述终端侧包括： 第一上行接 收模块和第一上行发送模块，
所述第一上行接收模块， 设置为： 接收所述基站侧发送的上行调度信息 和所述基站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发 的数据校验信息；
所述第一上行发送模块， 设置为： 在第一上行接收模块接收所述基站侧 发送的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的 子帧上发送数据；
所述基站侧包括： 第二上行接收模块和第二上行发送模块， 其中， 所述第二上行接收模块， 设置为： 接收所述终端侧在子帧间隔为已增大 的终端侧上行反馈子帧间隔的子帧上发送的数据；
所述第二上行发送模块， 设置为： 发送上行调度信息， 在已增大的基站 侧上行反馈子帧间隔的子帧上下发数据校验信息。
13、 根据权利要求 12所述的系统， 其中， 增大后的下行反馈子帧间隔和 基站侧下行反馈子帧间隔大于 LTE通信覆盖的最大半径小于等于 lOOKm时 的终端侧下行反馈子帧间隔和基站侧下行反馈子帧间隔；
所述终端侧还包括： 第一下行接收模块和第一下行发送模块， 其中， 所述第一下行接收模块， 设置为： 接收所述基站侧发送的下行调度信息 和基站侧在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的重 传数据或新数据；
所述第一下行发送模块， 设置为： 在第一下行接收模块接收所述基站侧 发送的下行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔的 子帧上反馈校验信息；
所述基站侧还包括： 第二下行接收模块和第二下行发送模块， 其中， 所述第二下行接收模块， 设置为： 接收所述终端侧在子帧间隔为已增大 的终端侧下行反馈子帧间隔的子帧上反馈的校验信息；
所述第二下行发送模块， 设置为： 发送下行调度信息， 在子帧间隔为已 增大的基站侧下行反馈子帧间隔的子帧上下发重传数据或新数据。
14、 一种终端侧， 该终端侧包括： 第一上行接收模块和第一上行发送模 块， 其中，
所述第一上行接收模块， 设置为： 接收基站侧发送的上行调度信息和基 站侧在子帧间隔为已增大的基站侧上行反馈子帧间隔的子帧上下发的数据校 验信息；
所述第一上行发送模块， 设置为： 在第一上行接收模块接收基站侧发送 的上行调度信息后， 在子帧间隔为已增大的终端侧上行反馈子帧间隔的子帧 上发送数据。
15、 根据权利要求 14所述的终端侧， 所述终端侧还包括： 第一下行接收 模块和第一下行发送模块， 其中，
所述第一下行接收模块， 设置为： 接收基站侧发送的下行调度信息和基 站侧在子帧间隔为已增大的基站侧下行反馈子帧间隔的子帧上下发的重传数 据或新数据；
所述第一下行发送模块， 设置为： 在第一下行接收模块接收所述基站侧 发送的下行调度信息后， 在子帧间隔为已增大的终端侧下行反馈子帧间隔的 子帧上反馈校验信息。
16、 一种基站侧， 该基站侧包括： 第二上行接收模块和第二上行发送模 块， 其中，
所述第二上行接收模块， 设置为： 接收终端侧在子帧间隔为已增大的终 端侧上行反馈子帧间隔的子帧上发送的数据；
所述第二上行发送模块， 设置为： 发送上行调度信息， 在子帧间隔为已 增大的基站侧上行反馈子帧间隔的子帧上下发数据校验信息。
17、 根据权利要求 16所述的基站侧， 所述基站侧还包括： 第二下行接收 模块和第二下行发送模块， 其中，
第二下行接收模块， 设置为： 接收所述终端侧在子帧间隔为已增大的终 端侧下行反馈子帧间隔的子帧上反馈的校验信息；
第二下行发送模块， 设置为： 发送下行调度信息， 在子帧间隔为已增大 的基站侧下行反馈子帧间隔的子帧上下发重传数据或新数据。
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