WO2013166883A1 - Procédé, équipement utilisateur et station de base pour transmettre ou recevoir des données de service sps de liaison montante - Google Patents

Procédé, équipement utilisateur et station de base pour transmettre ou recevoir des données de service sps de liaison montante Download PDF

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Publication number
WO2013166883A1
WO2013166883A1 PCT/CN2013/072560 CN2013072560W WO2013166883A1 WO 2013166883 A1 WO2013166883 A1 WO 2013166883A1 CN 2013072560 W CN2013072560 W CN 2013072560W WO 2013166883 A1 WO2013166883 A1 WO 2013166883A1
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WIPO (PCT)
Prior art keywords
data packet
retransmission
rtt
retransmitted
ttis
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PCT/CN2013/072560
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English (en)
Chinese (zh)
Inventor
南方
吴强
万蕾
李博
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华为技术有限公司
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Publication of WO2013166883A1 publication Critical patent/WO2013166883A1/fr

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Classifications

    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • 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
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
    • 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

Definitions

  • the present invention relates to the field of wireless communications, and in particular, to a method for transmitting or receiving uplink semi-persistent Scheduling (SPS) service data in a Frequency Division Duplexing (FDD) system, a user equipment and a base station.
  • SPS uplink semi-persistent Scheduling
  • FDD Frequency Division Duplexing
  • VoIP Voice over IP
  • a business feature that is important for Long Term Evolution (LTE) is to eliminate all circuit domain services and propose the concept of an all-IP network. Therefore, VoIP is one of the types of services that LTE can support.
  • the resources of the LTE system are divided into a plurality of symbols in the time domain and are divided into subcarriers in the frequency domain.
  • a radio frame is 10 ms long in time and contains 10 subframes. Each regular subframe is lms long and contains two slots.
  • ⁇ is the basic unit of time when resources are scheduled.
  • Hybrid Automatic Repeat Request HQQ is a technology that combines Forward Error Correction (FEC) and Automatic Repeat Request (ARQ).
  • the processing flow includes: including error correction and error detection bits in each data packet sent, and if the number of error bits in the received data packet is within the error correction capability of the receiving end, the error is corrected by itself.
  • the receiving end causes the transmitting end to retransmit the data packet.
  • multi-process stop-wait HARQ is employed. After a transmitted data packet is sent, it takes a certain time to transmit a new data packet or retransmit the old data packet. The length of the waiting time is the same as the transmission delay and the processing time of the UE or the processing time of the eNodeB. Related.
  • Round Trip Time is defined as the difference between the time the same packet starts from one transmission and the next.
  • the eNodeB or the UE needs to initiate other parallel HARQ processes during the waiting period, and the number of parallel HARQ processes is related to the RTT.
  • the RTT is 8 TTIs, and the uplink and downlink use 8 parallel HARQ processes.
  • ACK Acknowledgement
  • the receiving end sends an Acknowledgement (ACK) message. If the data packet received by the receiving end is incorrect, the feedback is non-acknowledgment (Negative Acknowledgement).
  • NACK NACK
  • the sender waits for ACK/NACK feedback of a certain process, the process temporarily stops transmission.
  • the feedback is received, whether to send a new data packet or retransmit the old data packet according to whether the ACK or NACK is fed back.
  • the present invention provides a method for transmitting or receiving uplink SPS service data, a user equipment and a base station, to solve the problem of how to improve the time density of transmission in the uplink data transmission of the SPS service of the prior art.
  • a method for transmitting uplink semi-persistent scheduling SPS service data in a frequency division duplex FDD system comprising:
  • the size of the TTI bundling of the initially transmitted data packet and the retransmission data packet are ⁇ in the case that the transmitted data does not collide
  • the bundling size is different and/or the round-trip delay RTT of the initial transmission and the first retransmission is different from the RTT of the adjacent two retransmissions.
  • a user equipment in a second aspect, includes:
  • a transmission module configured to transmit to the base station or retransmit the uplink semi-persistent scheduling SPS service by using a transmission time interval TTI to bind the bundled data packet; wherein, in the case that the transmitted data does not collide, the initially transmitted data packet
  • the size of the TTI bundling is different from the size of the TTI bundling of the retransmitted data packet and/or the round-trip delay RTT of the initial transmission and the first retransmission is different from the RTT of the adjacent two retransmissions;
  • a receiving module configured to: when receiving a retransmission indication of the data packet sent by the base station, indicating The transport module retransmits the data packet.
  • a method for receiving uplink semi-persistent scheduling SPS service data in a frequency division duplex FDD system comprising:
  • the size of the TTI bundling of the initially transmitted data packet is in the case of ensuring that the transmitted data does not collide
  • the size of the TTI bundling of the retransmitted data packet is different and/or the round-trip delay RTT of the initial transmission and the first retransmission is different from the RTT of the adjacent two retransmissions.
  • a base station where the base station includes:
  • the receiving module is configured to receive the uplink semi-persistent scheduling SPS service of the initial transmission or retransmission of the user equipment, and use the transmission time interval TTI to bind the bundled data packet; wherein, in the case that the transmitted data does not collide, the initial transmission
  • the size of the TTI bundling of the data packet is different from the size of the TTI bundling of the retransmitted data packet and/or the round-trip delay RTT of the initial transmission and the first retransmission is different from the RTT of the adjacent two retransmissions
  • the processing module is used for Detecting the data packet received by the receiving module, and when detecting the data packet error, sending a retransmission indication to the sending module;
  • a sending module configured to send the retransmission indication to the user equipment.
  • the invention adopts the difference of the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet and/or the initial transmission and the first retransmission in the case that the guaranteed transmission data does not collide.
  • the RTT is different from the RTT of two adjacent retransmissions, instead of using the initial data packet and the retransmitted data packet specified in the prior art protocol, the RTT of the four TTI bundling and the adjacent two transmitted data packets are used. It is a 16 TTI scheme, thereby increasing the time density of transmission in the prior art when transmitting uplink SPS services.
  • FIG. 1 is a schematic diagram of a technology in which uplink TTI bundling and HARQ are combined in the prior art
  • FIG. 2 is a timing diagram of multi-process transmission of uplink SPS services in the prior art
  • FIG. 3 is a flowchart of a method for transmitting uplink SPS service data according to an embodiment of the present invention
  • FIG. 4 is a schematic structural diagram of a frame according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of another frame according to an embodiment of the present invention.
  • FIG. 5( a ) is a schematic diagram of still another frame structure according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of still another frame structure according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for receiving an uplink SPS service according to Embodiment 2 of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description
  • TTI bundling and HARQ For VoIP services, in order to achieve better coverage performance, the existing technology of LTE adopts a combination of TTI bundling and HARQ in the uplink.
  • a schematic diagram of TTI bundling and HARQ is shown in Figure 1.
  • the prior art uses four TTI bundlings, that is, different redundant versions of Protocol Data Units (PDUs) are transmitted in four consecutive TTIs (Redundancy Version, RV).
  • RV Resource Version
  • the protocol also stipulates that, in the prior art, the RTT of the same data packet transmitted twice in the prior art takes 16 ms. That is to say, if the detection error occurs, the 16 TTIs after the start of the data packet can be retransmitted.
  • the retransmission also uses four TTI bundlings, that is, within four consecutive TTIs. Transmit different RVs for retransmission. TTI bundling actually increases the number of retransmissions over a certain period of time and uses fewer ACK/NACK bits.
  • the LTE introduces a new resource scheduling method, semi-static scheduling technology.
  • the semi-persistent scheduling mode refers to the initial scheduling of the eNodeB through the physical downlink control channel during the scheduling transmission of LTE (Physical The Downlink Control Channel (PDCCH) indicates the current scheduling information of the UE. If the UE identifies the semi-persistent scheduling, the current scheduling information is saved, and the service data is transmitted or received at the same time-frequency resource location every fixed period.
  • PDCCH Physical The Downlink Control Channel
  • the characteristics of the periodic arrival of voice data packets can be fully utilized, and one-time authorization and periodic use can effectively save the PDCCH resources used by the LTE system for scheduling indication, so that the call quality and system performance can be improved without affecting the call quality and system performance. Support more voice users.
  • uplink data can be scheduled by means of SPS; at the same time, bundling can enhance coverage.
  • the VoIP service forms one PDU every 20ms.
  • the transmission of one PDU is a HARQ process, that is, VoIP starts a new HARQ process every 20ms.
  • Each HARQ process includes initial transmission and retransmission, and initial transmission and retransmission can be implemented by TTI bundling.
  • the multi-process transmission of the uplink VoIP service under FDD is as shown in FIG. 2, in which four TTI bundling and HARQ technologies are simultaneously adopted.
  • the same padding style is used in Figure 2 to indicate the initial and retransmission of the same packet, using different padding styles to represent different HARQ processes.
  • the Physical Hybrid ARQ Indicator Channel (PHICH) of the eNodeB includes the ACK/NACK information fed back by the base station, and the PHICH in the figure indicates that the ACK/NACK information fed back by the base station is received at the TTI.
  • the same TTI cannot be used for the initial transmission and retransmission of the data packet and the retransmission and retransmission.
  • the arrival period of VoIP packets is 20ms, each data packet can occupy a maximum transmission time of 20 TTIs. However, as can be seen from FIG.
  • the base station may choose to combine these different RVs to detect whether the detection is correct by an ACK/NACK bit. For this detection method of the base station, when the UE completes one transmission of the four RVs of one data packet at the eleventh 111 (eg, TTI #3), the UE will be at the n+4th TTI, eg, TTI #7 Receiving a message about the packet fed back by the base station ACK/NACK of the secondary transmission.
  • the RTT can be at least 1 lms.
  • the existing protocol ⁇ bundling takes 16ms, which causes the UE to use up to 12 TTIs in the uplink data transmission of the SPS service, such as VoIP service, and 8 TTIs that can be utilized are not utilized. The time density of the transmission is not maximized and can be improved.
  • the base station after receiving the four RVs of a TTI bundling, the base station combines the four different RVs to detect.
  • the base station may also not combine the four RVs, but immediately after receiving the first RV, and determine whether retransmission is required according to the detection result of the RV.
  • the UE transmits an RV of a data packet at the 11th 111 (eg, TTI #0)
  • the UE will receive feedback from the base station at the n+4th TTI (eg, TTI #4).
  • This packet is the ACK/NACK of this RV. If a NACK is received, the UE's next retransmission of this packet can be sent at least on the n+8th TTI (eg, ⁇ #8).
  • Subsequent base station detection is performed by combining the remaining 3 RVs with the first RV of the next retransmission.
  • the RTT can be 8 ms. Therefore, RTT can also be less than l lms.
  • embodiments of the present invention provide an implementation of a method of transmitting or receiving semi-statically scheduled SPS service data, which improves the time density of transmission.
  • the embodiment of the present invention provides a method for transmitting uplink semi-persistent scheduling SPS service data, as shown in FIG. 3, the method includes:
  • Step 301 Initially transmit or retransmit the data packet of the uplink SPS service using the TTI bundling; Step 302, when receiving the retransmission indication of the data packet, retransmit the data packet, where the data that is guaranteed to be transmitted is not In the case of a collision, the size of the TTI bundling of the initially transmitted packet is different from the size of the TTI bundling of the retransmitted packet and/or the initial transmission is different from the RTT of the first retransmission and the RTT of the adjacent two retransmissions.
  • the retransmission indication in the embodiment of the present invention may be a NACK message, but the embodiment of the present invention is not limited to a NACK message, and may be other types of retransmission indications.
  • the NACK message is taken as an example for description.
  • the size of the transmitted TTI bundling may be an integer multiple of 4, or may not be, wherein the redundancy version number of ⁇ bundling is 0, 2, 3, 1, 0, 2, 3, 1, 0.
  • the order of ## is arranged.
  • the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet are different and/or the RTT of the initial transmission and the first retransmission and the RTT of the adjacent two retransmissions
  • four und bundlings are used, thereby improving the time density of transmission in the VoIP uplink data transmission in the prior art.
  • the RTT transmitted twice adjacent to each other may be at least 11 ⁇ .
  • the same data packet is retransmitted at most twice.
  • the initial data packet uses 8 b bundling
  • the first retransmitted data packet uses 4 TTI bundling
  • the second retransmitted data packet uses 8 TTI bundling.
  • the first retransmission and the initial transmission RTT are 16 TTIs
  • the second retransmission and the first retransmission RTT are 12 TTIs.
  • the initial data packet uses 4 b bundlings
  • the first retransmitted data packet uses 8 TTI bundlings
  • the second retransmitted data packet uses 8 TTI bundlings.
  • the RTT of the first retransmission and the initial transmission is 12 TTIs
  • the RTT of the second retransmission and the first retransmission is 32 TTIs.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the retransmissions and initial transmissions of the RTT are 24 ⁇ .
  • the embodiment of the present invention is directed to a semi-persistent scheduling service, which can maximize the time density of transmission in the case of ensuring that the transmitted data does not collide, so that a data packet occupies a transmission time of up to 20 ms in 50 ms, thus adding a data packet.
  • this embodiment also provides an application example of three optional data frame structures.
  • the initial data packet adopts 8 TTIs.
  • Bundling the first retransmitted packet uses four TTI bundlings, and the second retransmitted packet uses eight TTI bundlings.
  • the RTT of the first packet and the retransmission of the same data packet is 16, and the RTT of the two retransmissions is 12, and the data packet can be retransmitted at most twice.
  • an initial transmission packet fails to be detected, that is, the NACK of the initially transmitted data packet is received, the data packet is retransmitted, and the RTT of the first retransmitted data packet and the first transmitted data packet is 16 TTI, that is to say, the data packet will be retransmitted for the first time after the 16th TTI after the start of the initial data packet. Therefore, the end time of the initial data packet and the start time of the first retransmission The interval between them is 8 TTIs.
  • the RTT of the second retransmitted data packet and the first retransmitted data packet is 12, so the end time of the first retransmission of the data packet and The interval between the start times of the second retransmission is 8 ⁇ .
  • one packet in this example can be retransmitted up to 2 times, that is, up to a total of 3 times, and the second retransmission is completed at 36ms.
  • the application example shortens the retransmission twice. RTT between packets.
  • the TTI bundling size of the packet initial transmission and the second retransmission is changed to 8 TTIs.
  • multiple processes happen to fill the ⁇ in the time domain, and the time domain density of the transmission is maximized.
  • the initial data packet uses four bundled bundlings
  • the first retransmission uses eight TTI bundlings
  • the second retransmission data uses 8 bundles of bundling.
  • the RTT of the initial transmission and the retransmission of the same data packet is 12, and the RTT of the two consecutive retransmissions is 32, and the data packet can be retransmitted at most twice.
  • an initial transmission packet fails to be detected, that is, the NACK of the initially transmitted data packet is received, the data packet is retransmitted, and the RTT of the first retransmitted data packet and the first transmitted data packet is 12.
  • TTI that is to say, the data packet will be retransmitted for the first time after the 12th TTI after the start of the initial data packet. Therefore, the end time of the first data packet and the first retransmission in this example.
  • the interval between the start times is 8 TTIs. If the first retransmission detection of the data packet fails, the RTT of the second retransmitted data packet and the first retransmitted data packet are 32 ⁇ . Therefore, in this example, the data packet is retransmitted for the first time.
  • the interval between the end time and the start time of the second retransmission is 24 ⁇ .
  • one packet in this application example can be retransmitted up to 2 times, that is, up to 3 times in total, and the second retransmission is completed at 52 ms. It can be seen that this application example shortens the initial data packet compared with the data packet transmitted in the prior art and the data packet of the first retransmission and the data packet of the two retransmissions are both 16 ms RTT.
  • the RTTo of the first retransmitted packet and the second retransmitted packet are extended with the TTI bundling size of the prior art for initial transmission and retransmission to 4
  • this application example changes the TTI bundling size of the first retransmitted data packet and the second retransmitted data packet to 8 TTIo.
  • multiple processes just fill up. In the time domain, the time domain density of the transmission is maximized.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the initial packet and retransmission RTT of the same data packet is 24, and the data packet can be retransmitted at most once.
  • an initial data packet fails to be detected, that is, the NACK of the initially transmitted data packet is received, and the data packet is retransmitted, and the RTT of the first retransmitted data packet and the first transmitted data packet is 24 TTI, that is to say, the data packet will be retransmitted for the first time after the 24th TTI after the start of the initial data packet. Therefore, in this example, the end time of the initial data and the start of the first retransmission The interval between times is 20 ⁇ . Considering the 50ms delay requirement, a packet in this example can be retransmitted at most once, that is, up to a total of 2 times, and this retransmission is completed at the 40th.
  • the application example extends the initial data packet compared with the data packet transmitted in the prior art and the data packet of the first retransmission and the data packet of the two retransmissions are both 16 ms RTT. RTT with the retransmitted packet.
  • the size of the TTI bundling is changed to 16 TTIs.
  • multiple processes just occupy the time domain, and the time domain density of the transmission is maximized.
  • the frame structure of the above three application examples given in the embodiments of the present invention is only for some alternatives, and the embodiment of the present invention is not limited thereto, as long as it is the initial data packet.
  • the size of the bundling and the size of the TTI bundling of the retransmitted data packet are different and/or the frame structure of the original RTT different from the first retransmitted RTT and the adjacent two retransmitted RTT may be, for example, as shown in FIG.
  • the initial data packet uses 4 TTI bundling
  • the first retransmitted data packet uses 9 TTI bundling
  • the second retransmitted data packet uses 7 TTI bundling
  • the RTT of the first packet and the first retransmission of the same packet is 11, and the RTT of the two retransmissions is 33, and one packet can be retransmitted at most. 2 times.
  • the frame structure provided by the embodiment of the present invention is a frame structure capable of occupying a frame on the time domain, so that the time domain density of the transmission is maximized.
  • the size of the bundling is different and/or the frame structure of the RTT of the first transmission and the first retransmission is different from that of the adjacent two retransmissions, and further utilizes the 8 TTIs that can be utilized but not utilized in the prior art.
  • the time density of the transmission is maximized, so that a data packet occupies a transmission time of up to 20 ms in 50 ms, thus increasing the weight of one data packet.
  • the embodiment further provides a user equipment.
  • the user equipment includes: a transmission module 701, configured to transmit or retransmit an uplink semi-persistent scheduling SPS service to a base station.
  • the TTI is bound to the bundled packet; wherein, in the case that the transmitted data does not collide, the size of the TTI bundling of the initially transmitted packet is different from the size of the TTI bundling of the retransmitted packet and/or the first pass and the first
  • the retransmission of the RTT is different from the RTT of the two retransmissions; and
  • the receiving module 702 is configured to, when receiving the retransmission indication of the data packet sent by the base station, instruct the transmission module 701 to retransmit the data packet.
  • the size of the TTI bundling of the initially transmitted data packet is different from the size of the TTI bundling of the retransmitted data packet, and/or the initial transmission and the RTT of the first retransmission are different from the RTT of the adjacent two retransmissions.
  • four und bundling and the RTT of the adjacent two transmitted data packets are 16 TTI schemes, thereby improving the existing The time density of transmission during VoIP uplink data transmission in the technology.
  • the RTT transmitted twice adjacent to each other may be at least 11 TTIs.
  • the packet is retransmitted at most twice.
  • the initial data packet uses 8 b bundling
  • the first retransmitted data packet uses 4 TTI bundling
  • the second retransmitted data packet uses 8 TTI bundling.
  • the first weight The RTT transmitted and transmitted is 16 TTIs
  • the RTT of the second retransmission and the first retransmission is 12 ⁇ . or
  • the initial data packet uses 4 b bundlings
  • the first retransmitted data packet uses 8 TTI bundlings
  • the second retransmitted data packet uses 8 TTI bundlings.
  • the RTT of the first retransmission and the initial transmission is 12 TTIs
  • the RTT of the second retransmission and the first retransmission is 32 TTIs.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the retransmissions and initial transmissions of the RTT are 24 ⁇ .
  • the round-trip delay RTT of the adjacent two transmissions is at least 11 TTIs
  • the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet are different and/or initial transmission
  • the first retransmission of the RTT is different from the adjacent two retransmissions of the RTT, instead of using the initial data packet and the retransmitted data packet specified in the prior art protocol, four TTI bundlings are used and two adjacent times.
  • the RTT of the transmitted data packet is a 16 TTI scheme, thereby maximizing the time density of transmission in the prior art VoIP uplink data transmission.
  • a second embodiment of the present invention provides a method for receiving uplink SPS service data in the uplink. As shown in FIG. 8, the method includes:
  • Step 801 Receive a TTI bundling data packet of the uplink SPS service that is initially transmitted or retransmitted.
  • Step 802 When detecting that the data packet error is received, return a retransmission indication and receive the retransmitted data packet. ;
  • the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet are different and/or the initial transmission and the RTT of the first retransmission are adjacent to each other.
  • the RTT of the two retransmissions is different.
  • the round-trip delay RTT of the adjacent two transmissions is at least 11 TTIs
  • the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet are different and/or initial transmission and
  • the first retransmission of the RTT is different from the adjacent two retransmissions of the RTT, instead of using the initial data packet and the retransmitted data packet specified in the prior art protocol, four TTI bundlings are used and two adjacent times. Number of transmissions According to the RTT of the packet, the scheme of 16 TTIs improves the time density of transmission in the VoIP uplink data transmission in the prior art.
  • the RTTs transmitted in the adjacent two times may be at least 11 TTIs, and the data packets that are retransmitted are received at most twice.
  • the initial data packet uses 8 TTI bundlings
  • the first retransmitted data packet uses 4 TTI bundlings
  • the second retransmitted data packet uses 8 TTI bundlings.
  • the RTT of the first retransmission and the initial retransmission is 16 TTIs
  • the RTT of the second retransmission and the first retransmission is 12 TTIs.
  • the initial data packet uses 4 b bundlings
  • the first retransmitted data packet uses 8 TTI bundlings
  • the second retransmitted data packet uses 8 TTI bundlings.
  • the RTT of the first retransmission and the initial transmission is 12 TTIs
  • the RTT of the second retransmission and the first retransmission is 32 TTIs.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the retransmissions and initial transmissions of the RTT are 24 ⁇ .
  • the round-trip delay RTT of the adjacent two transmissions is at least 11 TTIs
  • the size of the TTI bundling of the initially transmitted data packet and the size of the TTI bundling of the retransmitted data packet are different and/or initial transmission
  • the first retransmission of the RTT is different from the adjacent two retransmissions of the RTT, instead of using the initial data packet and the retransmitted data packet specified in the prior art protocol, four TTI bundlings are used and two adjacent times.
  • the RTT of the transmitted data packet is a 16 TTI scheme, thereby maximizing the time density of transmission in the prior art VoIP uplink data transmission.
  • the embodiment further provides a base station.
  • the base station includes: a receiving module 901, configured to receive a data packet of an uplink SPS service that is initially transmitted or retransmitted by the user equipment by using a bundling packet.
  • the size of the TTI bundling of the initially transmitted packet is different from the size of the TTI bundling of the retransmitted packet and/or the RTT and phase of the initial transmission and the first retransmission The RTT of the two retransmissions is different;
  • the processing module 902 is configured to detect the data packet received by the receiving module 901, and send a retransmission indication to the sending module 903 when the data packet error is detected;
  • the sending module 903 is configured to send a retransmission indication to the user equipment.
  • the RTT transmitted twice adjacent to each other may be at least 11 ⁇ .
  • the receiving module 901 receives the data packet of two retransmissions.
  • the initial data packet uses 8 b bundling
  • the first retransmitted data packet uses 4 TTI bundling
  • the second retransmitted data packet uses 8 TTI bundling.
  • the RTT of the first retransmission and the initial retransmission is 16 TTIs
  • the RTT of the second retransmission and the first retransmission is 12 TTIs.
  • the first transmitted data packet uses four b bundlings
  • the first retransmitted data packet uses eight TTI bundlings
  • the second retransmitted data packet uses eight TTI bundlings.
  • the RTT of the first retransmission and the initial transmission is 12 TTIs
  • the RTT of the second retransmission and the first retransmission is 32 TTIs.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the retransmissions and initial transmissions of the RTT are 24 ⁇ .
  • the embodiment of the present invention maximizes the time density of transmission in the case of ensuring that the transmitted data does not collide, so that a data packet occupies a transmission time of up to 20 ms in 50 ms, thus increasing the number of retransmissions of one data packet. Therefore, the required signal-to-noise ratio is reduced in the case of a certain rBLER performance requirement of the VoIP service, thereby enhancing coverage.
  • the embodiment of the present invention further provides a system for retransmitting uplink VoIP service data, where the system includes a base station and user equipment, where
  • a user equipment configured to transmit a TSI bundling data packet to the base station for initial uplink SPS service; and retransmit the data packet when receiving the retransmission indication of the data packet sent by the base station, where the data is guaranteed to be transmitted
  • the size of the TTI bundling of the initial transmitted packet is different from the size of the TTI bundling of the retransmitted packet and/or the initial transmission is different from the RTT of the first retransmission and the RTT of the adjacent two retransmissions.
  • the base station is configured to receive the uplink SPS service initially transmitted or retransmitted by the user equipment by adopting TTI bundling
  • the data packet detects the received data packet, and when the data packet error is detected, sends a retransmission indication to the user equipment.
  • the RTT transmitted twice adjacent to each other may be at least 11 ⁇ .
  • the packet is retransmitted at most twice.
  • the initial data packet uses 8 b bundling
  • the first retransmitted data packet uses 4 TTI bundling
  • the second retransmitted data packet uses 8 TTI bundling.
  • the RTT of the first retransmission and the initial retransmission is 16 TTIs
  • the RTT of the second retransmission and the first retransmission is 12 TTIs.
  • the initial data packet uses 4 b bundlings
  • the first retransmitted data packet uses 8 TTI bundlings
  • the second retransmitted data packet uses 8 TTI bundlings.
  • the RTT of the first retransmission and the initial transmission is 12 TTIs
  • the RTT of the second retransmission and the first retransmission is 32 TTIs.
  • the initial data packet uses 4 b bundlings
  • the retransmitted data packet uses 16 TTI bundlings
  • the retransmissions and initial transmissions of the RTT are 24 ⁇ .
  • the embodiment of the present invention solves the problem that the time domain density of the transmission is not maximized when the TTI bundling and HARQ technologies are used only under the original UL SPS, and the data packet is guaranteed.
  • a packet can occupy up to 20 TTIs for transmission, and more redundant versions can be transmitted within 50 ms (the redundancy version number is 0, 2. 3, 1, 0, 2, 3, 1 ... order), more efficient use of the time domain resources available for transmission, thereby achieving the purpose of enhancing UL VoIP coverage.
  • each functional module is only an example. In actual applications, the foregoing functions may be considered according to requirements, such as configuration requirements of corresponding hardware or convenience of implementation of software.
  • the allocation is performed by different functional modules, that is, the internal structure of the user equipment and the base station are divided into different functional modules to complete all or part of the above description.
  • the corresponding functional modules in this embodiment may be implemented by corresponding hardware, or may be performed by corresponding hardware to execute corresponding software.
  • the foregoing transmission module may be configured to perform the foregoing to the base station.
  • the hardware of the bundling packet function such as the transmitter, may also be a general transceiver or other hardware device capable of executing the corresponding computer program to perform the foregoing functions; and the processing module as described above, It may be hardware having a function of performing the foregoing detection of the data packet received by the receiving module, and transmitting a NACK message to the transmitting module when detecting the data packet error, such as a processor, or may be capable of executing a corresponding computer program.
  • a general processor or other hardware device that performs the aforementioned functions (the various embodiments described in this specification apply the above described principles).
  • the program can be stored in a computer readable storage medium, and the storage medium can include: Read only memory (ROM, Read Only Memory), random access memory (RAM), disk or optical disk.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention porte sur un procédé de transmission de données de service de planification semi-persistante (SPS) de liaison montante dans un système de duplexage par répartition en fréquence (FDD). Le procédé consiste : à transmettre initialement ou à retransmettre un paquet de données en utilisant un regroupement d'intervalles de temps de transmission (TTI) d'un service SPS de liaison montante ; et lorsqu'une indication de retransmission du paquet de données est reçue, à retransmettre le paquet de données, et à condition d'assurer que les données de transmission n'entrent pas en collision, la taille du regroupement de TTI du paquet de données initialement transmis est différente de celle du regroupement de TTI du paquet de données retransmis et/ou le temps de propagation en boucle (RTT) de la transmission initiale ou de la première retransmission est différent du RTT de deux retransmissions adjacentes. Un procédé, un équipement utilisateur et une station de base pour recevoir des données de service SPS sont également décrits d'une manière correspondante. La présente invention augmente la densité temporelle de transmission lorsque des données de liaison montante de service SPS sont transmises.
PCT/CN2013/072560 2012-05-09 2013-03-14 Procédé, équipement utilisateur et station de base pour transmettre ou recevoir des données de service sps de liaison montante WO2013166883A1 (fr)

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CN201210141497.XA CN103391175B (zh) 2012-05-09 2012-05-09 传输或接收上行sps业务数据的方法和用户设备和基站

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CN103427964A (zh) * 2012-05-25 2013-12-04 中兴通讯股份有限公司 一种数据传输方法、设备及系统
CN104378185B (zh) * 2014-12-04 2017-07-11 武汉虹信通信技术有限责任公司 一种用于lte系统中子帧绑定的调度方法及装置
CN107135051B (zh) * 2016-02-29 2020-04-28 中国移动通信集团公司 一种上行数据重传的方法、设备和系统
WO2018078547A1 (fr) * 2016-10-26 2018-05-03 Telefonaktiebolaget Lm Ericsson (Publ) Accès en liaison montante instantané sans rétroaction toujours active
CN108270527A (zh) * 2017-01-04 2018-07-10 电信科学技术研究院 一种混合自动重传请求harq传输方法及相关设备

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CN101677448A (zh) * 2008-09-19 2010-03-24 大唐移动通信设备有限公司 一种数据包的传输方法
CN101754268A (zh) * 2008-12-04 2010-06-23 中国移动通信集团公司 用户上行数据调度方法及用户设备

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CN101682488A (zh) * 2007-06-18 2010-03-24 Lm爱立信电话有限公司 通过发送时间间隔集束处理来增强上行链路传输
CN101677448A (zh) * 2008-09-19 2010-03-24 大唐移动通信设备有限公司 一种数据包的传输方法
CN101754268A (zh) * 2008-12-04 2010-06-23 中国移动通信集团公司 用户上行数据调度方法及用户设备

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