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WO2016058469A1 - Procédé et dispositif de transmission de données - Google Patents

Procédé et dispositif de transmission de données Download PDF

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Publication number
WO2016058469A1
WO2016058469A1 PCT/CN2015/090051 CN2015090051W WO2016058469A1 WO 2016058469 A1 WO2016058469 A1 WO 2016058469A1 CN 2015090051 W CN2015090051 W CN 2015090051W WO 2016058469 A1 WO2016058469 A1 WO 2016058469A1
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Prior art keywords
subframe
new
data transmission
frame structure
network side
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English (en)
Chinese (zh)
Inventor
谌丽
焦斌
秦飞
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • each frame has a length of 10 ms, and is composed of 10 subframes of length 1 ms, and each subframe is composed of two slots having a length of 0.5 ms.
  • each frame has a length of 10 ms and is composed of two half frames of length 5 ms.
  • each half frame consists of four 1 ms regular subframes and one 1 ms special subframe configuration; in the case of a 10 ms switching point period, the first field consists of 4 1 ms regular subframes and 1 ms special subframe, and the second field consists of 5 1 ms regular subframes. Composition.
  • a regular subframe consists of two time slots with a length of 0.5 ms; a special subframe consists of a Downlink Pilot Time Slot (DwPTS), a Guard Period (GP), and an Uplink Pilot Time Slot ( Uplink Pilot Time Slot, UpPTS).
  • DwPTS Downlink Pilot Time Slot
  • GP Guard Period
  • Uplink Pilot Time Slot Uplink Pilot Time Slot
  • scheduling and transmission are performed in units of subframes, that is, each scheduled data is transmitted on at least a time-frequency resource mapped to one subframe, which results in the lowest time of one-way transmission of the data packet.
  • the delay is 1ms.
  • hybrid-ARQ Hybrid-ARQ
  • HARQ hybrid automatic retransmission
  • the following line transmission is taken as an example.
  • the basic process of LTE system HARQ transmission includes:
  • Step 1 The base station schedules and sends a downlink data packet, and the UE receives the downlink data packet and processes the data packet;
  • Step 2 If the UE cannot correctly detect the downlink data packet, the NACK is fed back to the base station; the base station receives the uplink feedback signaling;
  • Step 3 The base station retransmits the data packet according to the UE feedback, and sends a downlink retransmission data packet; the UE receives the retransmission data packet;
  • Step 4 If the UE receives the ACK, the ACK is fed back to the base station. If the ACK is still not received correctly, repeat Step 2 to Step 3.
  • the physical block transmission has a single block error rate of 10% on average. To achieve a block error rate of 10-3, the average transmission needs to be transmitted three times, that is, two. Retransmission.
  • the HARQ RTT varies according to the uplink and downlink subframe configuration, and is 10 ms to 15 ms.
  • the minimum unidirectional transmission delay of the current LTE frame structure is 1 ms.
  • the HARQ mechanism is introduced to ensure transmission reliability, high reliability is achieved, and the average physical layer transmission time is extended by 16 to 30 ms. Therefore, the LTE frame structure in the prior art causes a long transmission delay and cannot meet the higher requirements of future transmission delay.
  • the embodiment of the invention provides a data transmission method and device for reducing the transmission delay of data transmission using the novel subframe by adopting a new type of subframe with a smaller length.
  • the frame structure includes at least one new type of subframe, the new subframe includes n symbols, and the cyclic prefix CP included in the new subframe is When short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • Data transmission is performed between the UE and the UE according to the frame structure.
  • a new type of sub-frame with a smaller length provided by the method can perform fast data transmission and reduce delay.
  • the frame structure that needs to be adopted when performing data transmission with the user equipment UE includes:
  • a part of the subframe is used as an extended subframe, and the extended subframe includes a plurality of new subframes, and the uplink and downlink configurations of the multiple new subframes are determined.
  • the new subframe proposed in the embodiment of the present invention can be compatible with the existing LTE system by extending the frame structure of the existing LTE system.
  • a start point of the first new subframe in the extended subframe is aligned with a start point of the extended subframe
  • a first guard interval is set between a start point of the first new subframe in the extended subframe and a start point of the extended subframe.
  • the end point of the last new subframe in the extended subframe cannot be aligned with the end point of the extended subframe
  • the end point of the last new subframe in the extended subframe and the extended subframe A second guard interval is set between the end points. Therefore, the conversion between the existing LTE subframe and the new subframe can also be implemented by the second guard interval.
  • the frame structure that needs to be adopted when performing data transmission with the user equipment UE includes:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • new sub-frames of various lengths are included in the same frame. Therefore, the configuration of the subframe length is more flexible, and is suitable for more transmission requirements.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the fastest feedback subframe can be set as the reverse direction subframe for feedback data transmission.
  • the method further comprises:
  • the UE can learn the subframe configuration information of the new subframe, determine the subframe structure of the new subframe, and then use the new subframe to perform corresponding data transmission.
  • the method further comprises:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE. Therefore, the new sub-frame length can be matched, and the new sub-frame length adjustment can be performed at any time according to the data transmission amount and the delay requirement, so that the latest new sub-frame can be used for data transmission at any time.
  • the method further comprises:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • Another data transmission method provided by the present invention includes:
  • the user equipment UE determines a frame structure to be used when performing data transmission with the network side, where the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, and the cyclic prefix included in the new subframe
  • the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, and the cyclic prefix included in the new subframe
  • CP is a short CP, n ⁇ 14
  • the CP included in the new subframe is a long CP, n ⁇ 12;
  • the UE performs data transmission between the frame structure and the network side.
  • the UE can perform fast data transmission and reduce delay by using the new subframe in the method.
  • the UE determines a frame structure to be used when performing data transmission with the network side, including:
  • the UE determines, according to the subframe configuration information of the new subframe sent by the network side, a frame structure that needs to be adopted when performing data transmission with the network side.
  • the method further includes:
  • the UE reports its own capability information to the network side. Therefore, the network side can perform reasonable configuration by referring to the capability information of the UE when performing the new subframe configuration.
  • the method further comprises:
  • the UE re-determines a frame structure that needs to be adopted when performing data transmission with the network side according to the adjusted subframe configuration information
  • the UE performs data transmission between the network side and the network side according to the frame structure that is required to perform data transmission with the network side.
  • the new sub-frame length can be matched, and the new sub-frame length adjustment can be performed at any time according to the data transmission amount and the delay requirement, so that the latest new sub-frame can be used for data transmission at any time.
  • the method further comprises:
  • the UE uses the next new subframe at the end of the data transmission process as a feedback subframe, and feeds back the data transmission processing result; and/or,
  • the UE sets the next new subframe after processing the feedback signaling to a retransmission subframe whose transmission direction is the same as the initial transmission direction, and performs data retransmission.
  • a frame structure determining unit configured to determine a frame structure to be used when performing data transmission with the user equipment UE, where the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, when the new subframe When the cyclic prefix CP included in the short subframe is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • a transmitting unit configured to perform data transmission with the UE according to the frame structure.
  • the frame structure determining unit is specifically configured to:
  • a part of the subframe is used as an extended subframe, and the extended subframe includes a plurality of new subframes, and the uplink and downlink configurations of the multiple new subframes are determined.
  • a start point of the first new subframe in the extended subframe is aligned with a start point of the extended subframe
  • a first guard interval is set between a start point of the first new subframe in the extended subframe and a start point of the extended subframe.
  • the end point of the last new subframe in the extended subframe cannot be aligned with the end point of the extended subframe, the end point of the last new subframe in the extended subframe and the extended subframe A second guard interval is set between the end points.
  • the frame structure determining unit is specifically configured to:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • new sub-frames of various lengths are included in the same frame.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the transmitting unit is further configured to: notify the UE of subframe configuration information of the new subframe.
  • the transmission unit is further configured to:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE.
  • the transmission unit is further configured to:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • a frame structure determining unit configured to determine a frame structure to be used when performing data transmission with the network side, where the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, in the new subframe
  • the cyclic prefix CP included is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • a transmitting unit configured to perform data transmission between the frame structure and the network side.
  • the frame structure determining unit is specifically configured to:
  • the transmitting unit is further configured to report the capability information of the UE where the device is located to the network side before the frame structure determining unit determines the frame structure to be used for performing data transmission with the network side.
  • the transmission unit is further configured to:
  • the transmission unit is further configured to:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • a processor a program for reading the memory, performs the following process:
  • the frame structure includes One new sub-frame, the new sub-frame includes n symbols, when the cyclic prefix CP included in the new sub-frame is a short CP, n ⁇ 14; when the CP included in the new sub-frame is a long CP, n ⁇ 12;
  • Data transmission is performed between the transceiver and the UE according to the frame structure.
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the processor determines the frame structure to be used for data transmission with the user equipment UE, the specific use is:
  • a part of the subframe is used as an extended subframe, and the extended subframe includes a plurality of new subframes, and the uplink and downlink configurations of the multiple new subframes are determined.
  • a start point of the first new subframe in the extended subframe is aligned with a start point of the extended subframe
  • a first guard interval is set between a start point of the first new subframe in the extended subframe and a start point of the extended subframe.
  • the end point of the last new subframe in the extended subframe cannot be aligned with the end point of the extended subframe, the end point of the last new subframe in the extended subframe and the extended subframe A second guard interval is set between the end points.
  • the method is further configured to:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • a new type of subframe of various lengths is included in the same frame.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the processor is further configured to:
  • the subframe configuration information of the new subframe is notified to the UE by the transceiver.
  • the processor is further configured to:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE by the transceiver.
  • the processor is further configured to:
  • the next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back through the transceiver; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed by the transceiver.
  • a processor for reading a program in the memory performing the following process:
  • the frame structure includes at least one a new type of subframe, the new subframe includes n symbols, when the cyclic prefix CP included in the new subframe is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • Data transmission is performed between the transceiver and the network side according to the frame structure.
  • a transceiver for receiving and transmitting data under the control of a processor.
  • the processor determines the frame structure to be used for data transmission with the network side
  • the specific use is:
  • the processor is further configured to:
  • the capability information of the UE where the device is located is reported by the transceiver to the network side.
  • the processor is further configured to:
  • data transmission is performed between the transceiver and the network side.
  • the processor is further configured to:
  • the next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back through the transceiver; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed by the transceiver.
  • FIG. 1 is a schematic flowchart of a data transmission method on a network side according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a configuration of a new subframe for a compatible carrier of an LTE system according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a configuration of a new subframe for a non-LTE system compatible carrier according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a data transmission method on a UE side according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an uplink and downlink configuration of a novel subframe according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a data transmission apparatus on a network side according to an embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a data transmission apparatus on a UE side according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of another data transmission apparatus on the network side according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of another data transmission apparatus on the UE side according to an embodiment of the present invention.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • UMTS Universal Mobile Telecommunication System
  • user equipment includes but is not limited to a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), a mobile telephone (Mobile Telephone), and a mobile phone (handset).
  • the user equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the user equipment can be a mobile phone (or "cellular"
  • RAN Radio Access Network
  • the user equipment can be a mobile phone (or "cellular"
  • the telephone device, the computer with wireless communication function, etc., the user equipment can also be a mobile device that is portable, pocket-sized, handheld, built-in, or in-vehicle.
  • a base station may refer to a device in an access network that communicates with a wireless terminal over one or more sectors over an air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a Base Transceiver Station (BTS) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station in LTE (NodeB or eNB or e-NodeB, evolutional Node B), the invention is not limited.
  • BTS Base Transceiver Station
  • NodeB base station
  • NodeB evolved base station
  • LTE Long Term Evolutional Node B
  • the embodiment of the invention provides a data transmission method and device for reducing the transmission delay of data transmission using the novel subframe by adopting a new type of subframe with a smaller length.
  • the technical solution provided by the embodiment of the present invention can solve the transmission delay limitation caused by the subframe in which the basic scheduling unit is 1 ms in the LTE system.
  • the transmission delay is reduced from the basic structure to meet the 5G air interface transmission delay requirement.
  • a data transmission method provided by an embodiment of the present invention includes the following steps:
  • the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, and the cyclic prefix included in the new subframe.
  • CP is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • a new type of sub-frame with a smaller length provided by the method can perform fast data transmission and reduce delay.
  • the novel subframe structure proposed in the embodiment of the present invention has a variable subframe length, and the new subframe length is n symbols.
  • the design method of the new sub-frame occupying the number of symbols n is:
  • n 12
  • the length of the new subframe is represented by the number of occupied symbols. For example, if the length of the new subframe is 3, it indicates 3 symbols occupied by the new subframe.
  • n is a common divisor of 14;
  • n is a common divisor of 12.
  • n 1, 2, or 7;
  • n 1, 2, 3, 4, or 6.
  • the frame structure that needs to be adopted when performing data transmission with the user equipment UE includes:
  • a partial subframe is used as an extended subframe, and the extended subframe includes multiple new subframes. And determining an uplink and downlink configuration of the plurality of new subframes.
  • the new subframe proposed in the embodiment of the present invention can be compatible with the existing LTE system by extending the frame structure of the existing LTE system.
  • the frame structure is designed as follows:
  • the new sub-frame design method compatible with the LTE system is:
  • a partial subframe (1 ms) is set as an extended subframe, and an extended subframe time domain position is used to configure a new subframe, and a plurality of new subframes are included in one LTE extended subframe duration, and are consecutively arranged.
  • the first new subframe start point in the LTE extended subframe is aligned with the original LTE subframe, or a first guard interval GP1 is reserved for conversion between the legacy LTE subframe and the new subframe;
  • the remaining duration is not enough to accommodate a new subframe, that is, the end point of the last new subframe in the extended subframe cannot be aligned with the end of the extended subframe. And then the remaining duration is taken as the second guard interval GP2; and, preferably, due to being between the two subframes (which may be the first of the last new subframe and the next extended subframe in the current extended subframe) Between new sub-frames, it can also be current expansion GP2 is already set between the last new subframe in the subframe and the next original LTE subframe. Therefore, the GP2 is the first new subframe or the original LTE in the next extended subframe. The starting point of the frame is aligned with the starting point of the next original LTE subframe subsequent to the GP2; of course, it is also possible to continuously set a guard interval after the GP2, but it is not necessary.
  • the LTE subframe 2 is configured as an extended subframe, and is used to accommodate a new type of subframe, and the extended subframe may be a downlink subframe or an uplink subframe.
  • the new subframe 0' starting point is aligned with the extended subframe 2 starting point; in the extended subframe 2, there are three new subframes, namely, a new subframe 0', a new subframe 1', a new subframe 2', and a new subframe 2
  • the duration between the end point of 'and the end point of the extended subframe 2 is set to the second guard interval GP2 for the new subframe and the legacy LTE subframe conversion, specifically, for the new subframe 2' and the LTE subframe 3 Conversion.
  • an LTE subframe occupies 14 symbols
  • a new subframe occupies 4 symbols
  • 1 ms has three new subframes
  • GP2 occupies 2 symbols.
  • LTE 1ms subframes and new subframes with multiple subframe lengths there are traditional LTE 1ms subframes and new subframes with multiple subframe lengths.
  • the traditional LTE UE performs data scheduling and transmission only on the LTE subframe, and the UE (hereinafter referred to as the new UE) can perform data scheduling and transmission on the LTE subframe or on the new subframe for a specific low delay requirement.
  • determining a frame structure to be used for data transmission with the user equipment UE including:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • the new subframe length may also include multiple types, for example, including a new type of subframe having a length of 3 symbols and 7 symbols, see FIG. 3, for example, at the first 1 ms, the value of k is 2. In the second 1ms, k takes the value 3. That is, for different UEs, the value of k may be different; for the same UE, k may also have multiple values, that is, the values of k may be different in different time periods.
  • a new type of subframe of a plurality of lengths is included in the same frame. Therefore, the configuration of the subframe length is more flexible, and is suitable for more transmission requirements.
  • each frame may be the same or different.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the fastest feedback subframe can be set as the reverse direction subframe for feedback data transmission.
  • the method further comprises:
  • Notifying the UE of the subframe configuration information of the new subframe for example, by using a broadcast message or a dedicated Radio Resource Control (RRC) signaling manner, notifying the subframe configuration information of the new subframe UE. Therefore, the UE can learn the subframe configuration information of the new subframe, determine the subframe structure of the new subframe, and then use the new subframe to perform corresponding data transmission.
  • RRC Radio Resource Control
  • the subframe configuration information of the new subframe includes the length of the new subframe and the uplink and downlink subframe configuration information.
  • the method further comprises:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE. Therefore, the new sub-frame length can be matched, and the new sub-frame length adjustment can be performed at any time according to the data transmission amount and the delay requirement, so that the latest new sub-frame can be used for data transmission at any time.
  • the method further comprises:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • another data transmission method provided by the present invention includes the following steps:
  • the user equipment UE determines a frame structure that needs to be adopted when performing data transmission with the network side.
  • the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, and is included in the new subframe.
  • the cyclic prefix CP is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • the UE performs data transmission between the frame structure and the network side.
  • the UE can perform fast data transmission and reduce delay by using the new subframe in the method.
  • the UE determines a frame structure to be used when performing data transmission with the network side, including:
  • the UE determines, according to the subframe configuration information of the new subframe sent by the network side, a frame structure that needs to be adopted when performing data transmission with the network side.
  • the method further includes:
  • the UE reports its own capability information to the network side. Therefore, the network side can perform reasonable configuration by referring to the capability information of the UE when performing the new subframe configuration.
  • the method further comprises:
  • the UE re-determines a frame structure that needs to be adopted when performing data transmission with the network side according to the adjusted subframe configuration information
  • the UE performs data transmission between the network side and the network side according to the frame structure that is required to perform data transmission with the network side.
  • the new sub-frame length can be matched, and the new sub-frame length adjustment can be performed at any time according to the data transmission amount and the delay requirement, so that the latest new sub-frame can be used for data transmission at any time.
  • the method further comprises:
  • the UE uses the next new subframe at the end of the data transmission process as a feedback subframe, and feeds back the data transmission processing result; and/or,
  • the UE sets the next new subframe after processing the feedback signaling to a retransmission subframe whose transmission direction is the same as the initial transmission direction, and performs data retransmission.
  • Embodiment 1 A non-LTE system compatible carrier enables a new subframe.
  • a new type of UE for example, a Machine Type Communication (MTC) UE with high latency requirements, adopting a new subframe on a new carrier (ie, a non-LTE system compatible carrier)
  • MTC Machine Type Communication
  • the structure for example, the frame structure shown in FIG. 3 performs data transmission, and the specific process includes:
  • Step 1 The new UE initiates an initial access process to the network, and reports the capability information of the UE.
  • Step 2 The network side device (specifically, the base station) that supports the non-LTE system compatible carrier of the new subframe receives the UE access request, and obtains the capability information of the UE from the UE to determine the UE capability.
  • the network side device specifically, the base station
  • Step 3 The network side device supporting the non-LTE system compatible carrier of the new subframe transmits the subframe configuration information of the new subframe to the UE when accessing the new UE, including the subframe length of the new subframe (the number of symbols included) And the configuration of the uplink and downlink subframes of the new subframe, complete the new subframe configuration. Subsequent transmission and scheduling can be performed in a new subframe configuration mode (subframe length, uplink and downlink subframe configuration, etc.).
  • the subframe configuration information may further include subframe information used by the UE to feed back the data transmission result, for example, a subframe number of a subframe used by the UE to feed back a NACK or ACK message.
  • Embodiment 2 The LTE system compatible carrier enables a new subframe.
  • the specific data transmission process includes:
  • Step 1 The base station compatible with the LTE carrier works according to the LTE frame structure and configures the subframe parameters.
  • a new type of subframe needs to be configured, for example, when determining that the current network is a private network with a high transmission speed, such as 5G, or when a service with a high transmission speed is required, or when the UE initiates a request for configuring a new subframe.
  • the extended subframe may be a downlink subframe or an uplink subframe
  • the base station compatible with the LTE carrier uses a broadcast message or a dedicated The radio resource control (RRC) signaling method notifies the UE of the subframe configuration information of the new subframe.
  • RRC radio resource control
  • Step 2 The behaviors of the LTE UE and the new UE are:
  • the LTE UE receives the subframe configuration information of the new subframe, that is, the configuration information of the LTE extended subframe, and does not perform data scheduling and transmission on the extended subframe (for a UE capable of parsing extended subframe configuration signaling), or LTE
  • the UE receives the scheduling and transmission in the LTE subframe mode on the extended subframe, but the LTE UE cannot receive any correct scheduling command and data transmission because it is not transmitted in the LTE subframe mode (applicable to the inability to parse the extended subframe configuration signaling) UE);
  • the new UE further receives the subframe configuration information of the new subframe, for example, including the subframe length, the CP, the GP length, the subframe transmission direction, and the like, and determines the new subframe configuration according to the subframe configuration information of the new subframe, specifically Determine the subframe number of the extended subframe, and determine the number and length of the new subframes in the extended subframe, and the CP, the GP length, and the uplink and downlink configurations of each new subframe.
  • the subframe configuration information of the new subframe for example, including the subframe length, the CP, the GP length, the subframe transmission direction, and the like.
  • the base station and the UE perform data scheduling and transmission in the extended subframe according to the new subframe configuration, and perform data scheduling and transmission in the legacy LTE subframe according to the LTE subframe configuration.
  • Embodiment 3 The new subframe length can be matched.
  • the data transmission process specifically includes:
  • Step 1 The system sets a variety of new sub-frame lengths. For example, under long CP, set 2, 3, 4, and 6 symbol numbers for a total of 4 new sub-frame lengths.
  • a variety of new subframe configuration options may be notified by the network side to the UE, or may be solidified in the base station and UE storage;
  • Step 2 The amount of data that the network side needs to transmit according to actual needs, for example, a relatively fixed packet size range for a specific MTC UE, according to a fast transmission principle, for example, a downlink or uplink data packet can be transmitted at a time, and a new type of subframe actually needed is designed. length;
  • Step 3 The network side performs a new subframe configuration for data transmission, and notifies the UE of the subframe configuration information of the new subframe by using broadcast or dedicated signaling (air interface RRC signaling or non-access layer signaling);
  • broadcast or dedicated signaling air interface RRC signaling or non-access layer signaling
  • Step 4 The network side performs a new subframe length adjustment according to the data transmission amount and the delay requirement.
  • the subframe configuration information of the adjusted new subframe is broadcasted or dedicated signaling ( The air interface RRC signaling or non-access stratum signaling) informs the UE.
  • the behavior process of the UE corresponds to the network side, and details are not described herein again.
  • Embodiment 4 Feedback retransmission delay of a new subframe.
  • the transmission direction of the new subframe may not be consistent with the original LTE extended subframe direction.
  • the transmission direction of the LTE subframe 1 is downlink, but in the embodiment of the present invention, the subframe is used as the delay.
  • the extended sub-frame includes three new sub-frames, namely, a new sub-frame 0', a new sub-frame 1', and a new sub-frame 2', wherein the transmission direction of the new sub-frame 0' and the new sub-frame 2' is downlink.
  • the transmission direction of the new subframe 1' is uplink, and the second guard interval GP2 is between the end of the new subframe 2' and the end of the LTE subframe 1.
  • the transmission direction of the LTE subframe 2 is downlink, but in the embodiment of the present invention, the subframe is used as an extended subframe, and includes three new subframes, namely, a new subframe 3′ and a new subframe 4′.
  • the new subframe 5' wherein the transmission direction of the new subframe 3' and the new subframe 5' is uplink, and the transmission direction of the new subframe 4' is downlink, the end point of the new subframe 5' to the end of the LTE subframe 2.
  • the possible fastest feedback subframe is set as the reverse direction subframe for feedback, for example, the downlink new subframe and the uplink new subframe are continuously spaced.
  • the uplink and downlink configurations of the new subframe are configured as uplink and downlink new subframe spacing configurations. For example, the downlink packet 1 transmission is performed in the new subframe 0', the feedback is performed in the new subframe 1', and the first retransmission is performed in the new subframe 2'.
  • the delay of the feedback and the retransmission subframe is proposed: under the premise that the processing capability of the base station and the UE is improved, the possible fastest feedback subframe is set as the reverse subframe for feedback; The fastest possible retransmission subframe after the feedback subframe is set to the subframe in the same direction as the initial transmission.
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • a data transmission apparatus includes:
  • the frame structure determining unit 11 is configured to determine a frame structure that needs to be adopted when performing data transmission with the user equipment UE, where the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, when the new type of subframe When the cyclic prefix CP included in the frame is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • the transmitting unit 12 is configured to perform data transmission with the UE according to the frame structure.
  • the frame structure determining unit 11 is specifically configured to:
  • a part of the subframe is used as an extended subframe, and the extended subframe includes a plurality of new subframes, and the uplink and downlink configurations of the multiple new subframes are determined.
  • a start point of the first new subframe in the extended subframe is aligned with a start point of the extended subframe
  • a first guard interval is set between a start point of the first new subframe in the extended subframe and a start point of the extended subframe.
  • the end point of the last new subframe in the extended subframe cannot be aligned with the end point of the extended subframe, the end point of the last new subframe in the extended subframe and the extended subframe A second guard interval is set between the end points.
  • the frame structure determining unit 11 is specifically configured to:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • new sub-frames of various lengths are included in the same frame.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the transmitting unit is further configured to: notify the UE of subframe configuration information of the new subframe.
  • the transmission unit 12 is further configured to:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE.
  • the transmission unit 12 is further configured to:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • the data transmission device can be a base station.
  • another data transmission apparatus provided by an embodiment of the present invention includes:
  • the frame structure determining unit 21 is configured to determine a frame structure that needs to be adopted when performing data transmission with the network side, where the frame structure includes at least one new type of subframe, where the new subframe includes n symbols, when the new subframe When the cyclic prefix CP included in the short subframe is a short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • the transmitting unit 22 is configured to perform data transmission between the frame structure and the network side.
  • the frame structure determining unit 21 is specifically configured to:
  • the transmitting unit 22 is further configured to report the capability information of the UE where the device is located to the network side before the frame structure determining unit determines the frame structure to be used for performing data transmission with the network side. .
  • the transmission unit 22 is further configured to:
  • the transmission unit 22 is further configured to:
  • next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back; and/or,
  • the next new subframe after processing the feedback signaling is set as a retransmission subframe whose transmission direction is the same as the initial transmission direction, and data retransmission is performed.
  • another data transmission apparatus provided by an embodiment of the present invention includes:
  • the processor 500 is configured to read a program in the memory 520 and perform the following process:
  • the frame structure includes at least one new type of subframe, the new subframe includes n symbols, and the cyclic prefix CP included in the new subframe is When short CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • Data transmission is performed between the UE and the UE via the transceiver 510 in accordance with the frame structure.
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the processor 500 determines the frame structure that needs to be used for data transmission with the user equipment UE, it is specifically used to:
  • a part of the subframe is used as an extended subframe, and the extended subframe includes a plurality of new subframes, and the uplink and downlink configurations of the multiple new subframes are determined.
  • the starting point of the first new subframe in the extended subframe is aligned with the starting point of the extended subframe
  • a first guard interval is set between a start point of the first new subframe in the extended subframe and a start point of the extended subframe.
  • the end point of the last new subframe in the extended subframe cannot be aligned with the end point of the extended subframe, the end point of the last new subframe in the extended subframe is set between the end point of the extended subframe and the extended subframe. There is a second guard interval.
  • the processor 500 determines the frame structure that needs to be used for data transmission with the user equipment UE, it is also specifically used to:
  • the length of the new subframe in each frame and the uplink and downlink configuration of the new subframe are determined according to the service data transmission requirement and/or the capability information reported by the UE.
  • New sub-frames of various lengths are included in the same frame.
  • the downlink new subframe and the uplink new subframe are arranged at intervals.
  • the processor 500 is also used to:
  • the subframe configuration information of the new subframe is notified to the UE by the transceiver 510.
  • the processor 500 is also used to:
  • the subframe configuration information of the new subframe is adjusted according to the data transmission amount and the delay requirement, and the adjusted subframe configuration information is notified to the UE by the transceiver 510.
  • the processor 500 is also used to:
  • the next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back through the transceiver 510; and/or,
  • the next new subframe after the processing of the feedback signaling is set as the retransmission subframe whose transmission direction is the same as the initial transmission direction, and the data is retransmitted by the transceiver 510.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 510 can be a plurality of components, including a transmitter and a transceiver, provided for transmission
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the data transmission device can be a base station.
  • another data transmission apparatus provided by an embodiment of the present invention includes:
  • the processor 600 is configured to read a program in the memory 620 and perform the following process:
  • the frame structure includes at least one new type of subframe, the new subframe includes n symbols, and the cyclic prefix CP included in the new subframe is short For CP, n ⁇ 14; when the CP included in the new subframe is a long CP, n ⁇ 12;
  • Data transmission is performed between the transceiver 610 and the network side in accordance with the frame structure.
  • the transceiver 610 is configured to receive and transmit data under the control of the processor 600.
  • the processor 600 determines the frame structure that needs to be used for data transmission with the network side, it is specifically used to:
  • the processor 600 is also used to: before determining the frame structure to be used for data transmission with the network side:
  • the capability information of the UE where the device is located is reported by the transceiver 610 to the network side.
  • the processor 600 is also used to:
  • data transmission is performed between the transceiver 610 and the network side.
  • the processor 600 is also used to:
  • the next new subframe at the end of the data transmission process is used as a feedback subframe, and the data transmission processing result is fed back through the transceiver 610; and/or,
  • the next new subframe after the processing of the feedback signaling is set as the retransmission subframe whose transmission direction is the same as the initial transmission direction, and the data retransmission is performed by the transceiver 610.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 600 and various circuits of memory represented by memory 620.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • the transceiver 610 can be a plurality of components, including a transmitter and a receiver, for providing communication with various other devices on a transmission medium. unit.
  • the user interface 630 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 in performing operations.
  • the data transmission device on the network side described in the foregoing embodiments of the present invention may be a base station and a relay node, where the base station includes a macro base station (Macro), a micro base station (Micro), a pico base station (Pico), and a home.
  • the base station includes a macro base station (Macro), a micro base station (Micro), a pico base station (Pico), and a home.
  • the embodiment of the present invention reduces the transmission delay of data transmission using the novel subframe by providing a new type of subframe with a smaller length.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
  • the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

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

Abstract

L'invention concerne un procédé et un dispositif de transmission de données, lesquels sont utilisés pour réduire, à l'aide d'une nouvelle sous-trame d'une longueur plus courte, le retard de transmission d'une transmission de données provoqué lorsque ces types de nouvelles sous-trames sont utilisés. Le procédé de transmission de données selon la présente invention comprend les étapes consistant à: déterminer une structure de trame requise dans une transmission de données avec un équipement d'utilisateur (UE), laquelle structure de trame comprend au moins une nouvelle sous-trame, la nouvelle sous-trame comprenant n symboles, lorsque le préfixe cyclique (CP) compris dans la nouvelle sous-trame est un CP court, n < 14, et lorsque le CP compris dans la nouvelle sous-trame est un CP long, n < 12; et effectuer une transmission de données avec l'UE en fonction de la structure de trame.
PCT/CN2015/090051 2014-10-17 2015-09-18 Procédé et dispositif de transmission de données Ceased WO2016058469A1 (fr)

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WO2018027809A1 (fr) * 2016-08-11 2018-02-15 富士通株式会社 Procédé de planification de ressources, appareil et système de communication
WO2018027807A1 (fr) * 2016-08-11 2018-02-15 富士通株式会社 Procédé de panification de ressources, appareil et système de communication
US11968050B2 (en) * 2016-09-28 2024-04-23 Huawei Technologies Co., Ltd. Method for feeding back ACK/NACK information for downlink data and related device
CN106533616B (zh) * 2016-11-01 2017-10-27 深圳职业技术学院 一种可靠的数据传输方法

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CN101860429A (zh) * 2009-04-03 2010-10-13 Lg电子株式会社 用于在无线通信系统中收发信号的方法
WO2014069788A1 (fr) * 2012-10-29 2014-05-08 엘지전자 주식회사 Procédé et équipement d'utilisateur pour transmettre et recevoir des trames tdd

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