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WO2016058469A1 - 一种数据传输方法及装置 - Google Patents

一种数据传输方法及装置 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)
French (fr)
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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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local 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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Abstract

本发明公开了一种数据传输方法及装置,用以通过一种长度更小的新型子帧,从而降低采用该新型子帧的数据传输的传输时延。本发明提供的一种数据传输方法,包括:确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;按照所述帧结构与所述UE之间进行数据传输。

Description

一种数据传输方法及装置
本申请要求在2014年10月17日提交中国专利局、申请号为201410555110.4、发明名称为“一种数据传输方法及装置”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本发明涉及通信技术领域,尤其涉及一种数据传输方法及装置。
背景技术
长期演进(Long Term Evolution,LTE)系统支持频分双工(Frequency Division Duplex,FDD)和时分双工(Time Division Duplex,TDD)两种类型的帧结构。
在LTE FDD的帧结构中,每一帧的长度为10ms,由10个长度为1ms的子帧构成,每一个子帧由2个长度为0.5ms的时隙构成。
在TD-LTE的帧结构中,每一帧的长度为10ms,由两个长度为5ms的半帧构成,在5ms切换点周期情况下,每一个半帧由4个1ms的常规子帧和一个1ms的特殊子帧构成;在10ms切换点周期情况下,第一个半帧由4个1ms的常规子帧和一个1ms的特殊子帧构成,第二个半帧由5个1ms的常规子帧构成。一个常规子帧由2个长度为0.5ms的时隙构成;一个特殊子帧由下行导频时隙(Downlink Pilot Time Slot,DwPTS)、保护间隔(Guard Period,GP)以及上行导频时隙(Uplink Pilot Time Slot,UpPTS)构成。
在LTE系统中,是以子帧为单位进行调度和传输的,即每次调度的数据至少是映射到一个子帧的时频资源上再进行传输的,这导致数据包单向传输的最低时延为1ms。
为了保证传输可靠性,LTE系统物理层引入混合自动重传(Hybrid-ARQ,HARQ)机制。
以下行传输为例,LTE系统HARQ传输的基本过程包括:
步骤一:基站调度并发送下行数据包,UE接收下行数据包并处理;
步骤二:如果UE不能正确检测出下行数据包,向基站反馈NACK;基站接收上行反馈信令;
步骤三:基站根据UE反馈,组织重传数据包并发送下行重传数据包;UE接收重传数据包;
步骤四:UE如果接收成功,向基站反馈ACK,如果仍不能正确接收,重复步骤二~步骤三。
物理层传输单次误块率平均为10%,要达到10-3的误块率,平均需要传输三次,即两 次重传。
LTE FDD系统中,初始传输到上行反馈的时延间隔t1=4ms,上行反馈到重传的时延间隔t2=4ms,即HARQ重传周期(HARQ round trip time,RTT)=8ms。在LTE TDD系统中,HARQ RTT根据上下行子帧配置的不同而不同,为10ms~15ms。
可见,要达到10-3的误块率,仅物理层时延平均就达到16~30ms。
综上所述,当前LTE帧结构最小单向传输时延为1ms,为保障传输可靠性引入HARQ机制后,要达到高可靠性,物理层平均传输时延长达16~30ms。因此,现有技术中的LTE帧结构导致的传输时延较长,无法满足未来传输时延的更高要求。
发明内容
本发明实施例提供了一种数据传输方法及装置,用以通过一种长度更小的新型子帧,从而降低采用该新型子帧的数据传输的传输时延。
本发明实施例提供的一种数据传输方法,包括:
确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
按照所述帧结构与所述UE之间进行数据传输。
通过该方法中提供的一种长度更小的新型子帧,可以进行快速的数据传输,降低时延。
较佳地,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
从而通过对现有LTE系统帧结构的扩展,使得本发明实施例中提出的新型子帧可以兼容现有的LTE系统。
较佳地,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。从而通过该第一保护间隔,可以实现现有LTE子帧和新型子帧之间的转换。
较佳地,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。从而通过该第二保护间隔,也可以实现现有LTE子帧和新型子帧之间的转换。
较佳地,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
较佳地,同一帧中包括多种长度的新型子帧。从而使得子帧长度的配置更加灵活,适用于更多的传输需求。
较佳地,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。从而使得可以将最快的反馈子帧设置为反方向子帧用于反馈数据传输情况。
较佳地,该方法还包括:
将新型子帧的子帧配置信息通知给所述UE。从而可以使得UE获知新型子帧的子帧配置信息,确定新型子帧的子帧结构,进而采用新型子帧进行相应的数据传输。
较佳地,该方法还包括:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。从而实现新型子帧长度可配,随时可以根据数据传输量和时延需求,进行新型子帧长度调整,使得可以随时采用最新的新型子帧进行数据传输。
较佳地,该方法还包括:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
从而,可以最大程度地降低新型子帧的反馈重传时延。
本发明提供的另一种数据传输方法,包括:
用户设备UE确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
所述UE按照所述帧结构与所述网络侧之间进行数据传输。
从而,UE可以通过该方法中的新型子帧,进行快速的数据传输,降低时延。
较佳地,所述UE确定与网络侧进行数据传输时需要采用的帧结构,包括:
所述UE接收所述网络侧发送的新型子帧的子帧配置信息;
所述UE根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
较佳地,所述UE确定与网络侧进行数据传输时需要采用的帧结构之前,该方法还包括:
所述UE上报自身的能力信息给所述网络侧。从而使得网络侧在进行新型子帧配置时可以参考该UE的能力信息进行合理配置。
较佳地,该方法还包括:
所述UE接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信 息;
所述UE根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
所述UE按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
从而实现新型子帧长度可配,随时可以根据数据传输量和时延需求,进行新型子帧长度调整,使得可以随时采用最新的新型子帧进行数据传输。
较佳地,该方法还包括:
所述UE将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
所述UE将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
从而,可以最大程度地降低新型子帧的反馈重传时延。
本发明实施例提供的一种数据传输装置,包括:
帧结构确定单元,用于确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
传输单元,用于按照所述帧结构与所述UE之间进行数据传输。
较佳地,所述帧结构确定单元,具体用于:
对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
较佳地,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
较佳地,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
较佳地,所述帧结构确定单元,具体用于:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
较佳地,同一帧中包括多种长度的新型子帧。
较佳地,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
较佳地,所述传输单元还用于:将新型子帧的子帧配置信息通知给所述UE。
较佳地,所述传输单元还用于:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。
较佳地,所述传输单元还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
本发明实施例提供的另一种数据传输装置,包括:
帧结构确定单元,用于确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
传输单元,用于按照所述帧结构与所述网络侧之间进行数据传输。
较佳地,所述帧结构确定单元,具体用于:
接收所述网络侧发送的新型子帧的子帧配置信息;
根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
较佳地,所述传输单元,还用于在所述帧结构确定单元确定与网络侧进行数据传输时需要采用的帧结构之前,上报所述装置所在的UE的能力信息给所述网络侧。
较佳地,所述传输单元,还用于:
接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
较佳地,所述传输单元,还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
本发明实施例提供的一种数据传输装置,包括:
处理器,用于读取存储器的程序,执行下列过程:
确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至 少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
按照所述帧结构通过收发机与所述UE之间进行数据传输。
收发机,用于在处理器的控制下接收和发送数据。
较佳的,处理器确定与用户设备UE进行数据传输时需要采用的帧结构时,具体用于:
对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
较佳的,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
较佳的,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
较佳的,处理器确定与用户设备UE进行数据传输时需要采用的帧结构时,具体还用于:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
较佳的,同一帧中包括多种长度的新型子帧。
较佳的,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
较佳的,处理器还用于:
通过收发机将新型子帧的子帧配置信息通知给所述UE。
较佳的,处理器还用于:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并通过收发机将调整后的子帧配置信息通知给所述UE。
较佳的,处理器还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机进行数据重传。
本发明实施例提供的另一种数据传输装置,包括:
处理器,用于读取存储器中的程序,执行下列过程:
确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一 个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
按照所述帧结构通过收发机与所述网络侧之间进行数据传输。
收发机,用于在处理器的控制下接收和发送数据。
较佳的,处理器确定与网络侧进行数据传输时需要采用的帧结构时,具体用于:
通过收发机接收所述网络侧发送的新型子帧的子帧配置信息;
根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
较佳的,处理器在确定与网络侧进行数据传输时需要采用的帧结构之前,还用于:
通过收发机上报该装置所在的UE的能力信息给所述网络侧。
较佳的,处理器还用于:
通过收发机接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,通过收发机与所述网络侧之间进行数据传输。
较佳的,处理器还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机进行数据重传。
附图说明
图1为本发明实施例提供的网络侧的一种数据传输方法的流程示意图;
图2为本发明实施例提供的对于LTE系统兼容载波的新型子帧配置示意图;
图3为本发明实施例提供的对于非LTE系统兼容载波的新型子帧配置示意图;
图4为本发明实施例提供的UE侧一种数据传输方法的流程示意图;
图5为本发明实施例提供的一种新型子帧的上下行配置示意图;
图6为本发明实施例提供的网络侧的一种数据传输装置的结构示意图;
图7为本发明实施例提供的UE侧一种数据传输装置的结构示意图;
图8为本发明实施例提供的网络侧的另一种数据传输装置的结构示意图;
图9为本发明实施例提供的UE侧的另一种数据传输装置的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
应理解,本发明的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)等。
还应理解,在本发明实施例中,用户设备(UE,User Equipment)包括但不限于移动台(Mobile Station,MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、手机(handset)及便携设备(portable equipment)等,该用户设备可以经无线接入网(Radio Access Network,RAN)与一个或多个核心网进行通信,例如,用户设备可以是移动电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等,用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置。
在本发明实施例中,基站(例如,接入点)可以是指接入网中在空中接口上通过一个或多个扇区与无线终端通信的设备。基站可用于将收到的空中帧与IP分组进行相互转换,作为无线终端与接入网的其余部分之间的路由器,其中接入网的其余部分可包括网际协议(IP)网络。基站还可协调对空中接口的属性管理。例如,基站可以是GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB),还可以是LTE中的演进型基站(NodeB或eNB或e-NodeB,evolutional Node B),本发明并不限定。
本发明实施例提供了一种数据传输方法及装置,用以通过一种长度更小的新型子帧,从而降低采用该新型子帧的数据传输的传输时延。
本发明实施例提供的技术方案,可以解决LTE系统中基本调度单位为1ms长度的子帧带来的传输时延限制。从基本结构上降低传输时延,以满足5G空口传输时延要求。
参见图1,在网络侧,具体的,例如在基站侧,本发明实施例提供的一种数据传输方法,包括步骤:
S101、确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
S102、按照所述帧结构与所述UE之间进行数据传输。
通过该方法中提供的一种长度更小的新型子帧,可以进行快速的数据传输,降低时延。
本发明实施例中提出的新型子帧结构,子帧长度可变,新型子帧长度为n个符号。新型子帧占用符号个数参数n的设计方式为:
当该新型子帧中包括的CP为短CP(也可以称为常规CP)时,n<14;
当该新型子帧中包括的CP为长CP(也可以称为扩展CP)时,n<12。
本发明实施例中,将新型子帧的长度用占用的符号数来表示,例如新型子帧的长度为3,则表示该新型子帧占用的3个符号。
较佳的,为了避免浪费资源,提高资源使用率:
当该新型子帧中包括的CP为短CP时,n为14的公约数;
当该新型子帧中包括的CP为长CP时,n为12的公约数。
例如:
当该新型子帧中包括的CP为短CP时,n为1、2、或7;
当该新型子帧中包括的CP为长CP时,n为1、2、3、4、或6。
较佳地,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
对于长期演进LTE系统兼容载波(网络侧是可以知道哪些载波是LTE系统兼容载波的),在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
从而通过对现有LTE系统帧结构的扩展,使得本发明实施例中提出的新型子帧可以兼容现有的LTE系统。
具体地,对于LTE系统兼容载波,其帧结构设计如下:
与LTE系统兼容的新型子帧设计方式为:
在LTE帧结构中,设置部分子帧(1ms)为扩展子帧,扩展子帧时域位置用于配置新型子帧,一个LTE扩展子帧时长内有多个新型子帧,并且连续排列。
LTE扩展子帧内第一个新型子帧起点与原LTE子帧对齐,或预留一个第一保护间隔GP1用于传统LTE子帧和新型子帧之间的转换;
如果LTE扩展子帧内(1ms)新型子帧连续排列后,后面剩余的时长不足以容纳一个新型子帧,即扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐,则将剩余的时长作为第二保护间隔GP2;并且,较佳地,由于在两个子帧之间(可以是当前扩展子帧中的最后一个新型子帧和下一扩展子帧中的第一个新型子帧之间,也可以是当前扩 展子帧中的最后一个新型子帧和下一原LTE子帧之间)已经设置有GP2,因此,该GP2后续不管是下一扩展子帧中的第一个新型子帧还是原有LTE子帧,其排列起点都与该GP2后续的下一原有LTE子帧起点对齐;当然,若在GP2后再连续设置一保护间隔也是可以的,只是没太大必要而已。
参见图2,将LTE子帧2配置为扩展子帧,用于容纳新型子帧,扩展子帧可以为下行子帧也可以为上行子帧。新型子帧0’起点与扩展子帧2起点对齐;在扩展子帧2中有三个新型子帧,分别为新型子帧0’、新型子帧1’、新型子帧2’;新型子帧2’的终点与扩展子帧2的终点之间的时长设置为第二保护间隔GP2,用于新型子帧和传统LTE子帧转换,具体地,即用于新型子帧2’与LTE子帧3的转换。例如:LTE子帧占14个符号,新型子帧占4个符号,1ms有三个新型子帧,则GP2占2个符号。
在这种结构下,存在传统LTE 1ms子帧以及新型子帧多种子帧长度。传统LTE UE只在LTE子帧上进行数据调度和传输,针对特定低时延需求UE(以下称为新型UE)即可以在LTE子帧上也可以在新型子帧上进行数据调度和传输,具有处理多种子帧长度的能力。
较佳地,对于非长期演进LTE系统兼容载波,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
具体地,对于非LTE系统兼容载波(网络侧是可以知道哪些载波是非LTE系统兼容载波的),其帧结构设计如图3所示,其中,k大于或等于2。
对于非LTE系统兼容载波,只有新型UE工作,系统根据数据传输需求和/或UE上报的能力信息,包括时延和数据量大小需求等,设置新型子帧长度并通知UE。为了容纳不同类型的UE,新型子帧长度还可以包括多种,例如同时包括长度为3个符号和7个符号的新型子帧,参见图3,例如,在第一个1ms,k取值为2,在第二个1ms,k取值为3。即针对不同的UE,k的取值可以不一样;针对同一个UE,k也可以有多个取值,即在不同的时间段,k的取值可以不同。
因此,较佳地,同一帧中包括多种长度的新型子帧。从而使得子帧长度的配置更加灵活,适用于更多的传输需求。
另外,同理,每一帧的帧结构可以相同或不同。
较佳地,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。从而使得可以将最快的反馈子帧设置为反方向子帧用于反馈数据传输情况。
较佳地,该方法还包括:
将新型子帧的子帧配置信息通知给所述UE,例如可以采用广播消息或专用无线资源控制(Radio Resource Control,RRC)信令方式,将新型子帧的子帧配置信息通知给所述 UE。从而可以使得UE获知新型子帧的子帧配置信息,确定新型子帧的子帧结构,进而采用新型子帧进行相应的数据传输。
其中,较佳地,本发明实施例中所述的新型子帧的子帧配置信息,包括新型子帧的长度和上下行子帧配置信息。
较佳地,该方法还包括:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。从而实现新型子帧长度可配,随时可以根据数据传输量和时延需求,进行新型子帧长度调整,使得可以随时采用最新的新型子帧进行数据传输。
较佳地,该方法还包括:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
从而,可以最大程度地降低新型子帧的反馈重传时延。
相应地,参见图4,在UE侧,本发明提供的另一种数据传输方法,包括步骤:
S201、用户设备UE确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
S202、所述UE按照所述帧结构与所述网络侧之间进行数据传输。
从而,UE可以通过该方法中的新型子帧,进行快速的数据传输,降低时延。
较佳地,所述UE确定与网络侧进行数据传输时需要采用的帧结构,包括:
所述UE接收所述网络侧发送的新型子帧的子帧配置信息;
所述UE根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
较佳地,所述UE确定与网络侧进行数据传输时需要采用的帧结构之前,该方法还包括:
所述UE上报自身的能力信息给所述网络侧。从而使得网络侧在进行新型子帧配置时可以参考该UE的能力信息进行合理配置。
较佳地,该方法还包括:
所述UE接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
所述UE根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
所述UE按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
从而实现新型子帧长度可配,随时可以根据数据传输量和时延需求,进行新型子帧长度调整,使得可以随时采用最新的新型子帧进行数据传输。
较佳地,该方法还包括:
所述UE将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
所述UE将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
从而,可以最大程度地降低新型子帧的反馈重传时延。
下面给出四个实施例的具体说明。
实施例一:非LTE系统兼容载波启用新型子帧。
针对特定低时延需求UE(以下称为新型UE),例如,时延要求高的机器类通信(Machine Type Communication,MTC)UE,在新载波(即非LTE系统兼容载波)上采用新型子帧结构(例如,如图3所示的帧结构)进行数据传输,那么具体流程包括:
步骤一:新型UE对网络发起初始接入过程,上报UE的能力信息;
步骤二:支持新型子帧的非LTE系统兼容载波的网络侧设备(具体可以是基站)接收UE接入请求,并从中获取UE的能力信息,确定UE能力;
步骤三:支持新型子帧的非LTE系统兼容载波的网络侧设备在接入新型UE时,向UE发送新型子帧的子帧配置信息,其中包括新型子帧的子帧长度(包括的符号数)和新型子帧的上下行子帧配置,完成新型子帧配置。后续的传输和调度都可以按新型子帧配置方式(子帧长度、上下行子帧配置等)进行。
其中,所述子帧配置信息,还可以包括UE用于反馈数据传输结果的子帧信息,例如UE反馈NACK或ACK消息所采用的子帧的子帧号。
实施例二:LTE系统兼容载波启用新型子帧。
具体的数据传输流程包括:
步骤一:兼容LTE载波的基站,按LTE帧结构工作并配置子帧参数。在需要配置新型子帧时,例如,在确定当前网络为5G等传输速度要求很高的专网时,或者在传输速度要求很高的业务建立时,或者在UE发起配置新型子帧的请求时,将部分LTE子帧配置为扩展子帧,该扩展子帧中包括多个新型子帧,扩展子帧可以为下行子帧也可以为上行子帧,并且兼容LTE载波的基站采用广播消息或专用无线资源控制(Radio Resource Control,RRC)信令方式,将新型子帧的子帧配置信息通知给UE。
步骤二:LTE UE和新型UE的行为分别是:
LTE UE接收新型子帧的子帧配置信息,即LTE扩展子帧的配置信息,在扩展子帧上不进行数据调度和传输(适用于能解析扩展子帧配置信令的UE),或,LTE UE在扩展子帧上按LTE子帧方式接收调度和传输,但由于不是按LTE子帧方式传输,LTE UE不能接收到任何正确的调度命令和数据传输(适用于不能解析扩展子帧配置信令的UE);
新型UE进一步接收新型子帧的子帧配置信息,例如,包括子帧长度、CP、GP长度、子帧传输方向等,并根据新型子帧的子帧配置信息,确定新型子帧配置,具体地,确定扩展子帧的子帧号,并确定该扩展子帧内新型子帧的个数和长度,以及CP、GP长度、各个新型子帧的上下行配置等。
后续,基站和UE按新型子帧配置在扩展子帧进行数据调度和传输,在传统LTE子帧按LTE子帧配置进行数据调度和传输。
实施例三:新型子帧长度可配。
数据传输流程具体包括:
步骤一:系统设置多种新型子帧长度,如长CP下,设置2、3、4、6个符号数共4种新型子帧长度。多种新型子帧配置选项可以由网络侧通知UE,也可以固化在基站和UE存储中;
步骤二:网络侧根据实际需要传输的数据量,例如针对特定MTC UE有相对固定的数据包大小范围,按快速传输原则,例如一次可以传输完下行或上行数据包,设计实际需要的新型子帧长度;
步骤三:网络侧进行用于数据传输的新型子帧配置,并将新型子帧的子帧配置信息通过广播或专用信令(空口RRC信令或非接入层信令)通知UE;
步骤四:网络侧根据数据传输量和时延需求,进行新型子帧长度调整,在需要进行新型子帧长度变更时,将调整后的新型子帧的子帧配置信息通过广播或专用信令(空口RRC信令或非接入层信令)通知UE。
UE的行为过程与网络侧相对应,在此不再赘述。
实施例四:新型子帧的反馈重传时延。
为了提高时延性能,新型子帧的传输方向可以不与原LTE扩展子帧方向一致,例如,参见图5,LTE子帧1的传输方向是下行,但本发明实施例中将该子帧作为扩展子帧,其中包括3个新型子帧,分别为新型子帧0’、新型子帧1’、新型子帧2’,其中新型子帧0’和新型子帧2’的传输方向是下行,而新型子帧1’的传输方向是上行,新型子帧2’的终点至LTE子帧1的终点之间为第二保护间隔GP2。同理,LTE子帧2的传输方向是下行,但本发明实施例中将该子帧作为扩展子帧,其中包括3个新型子帧,分别为新型子帧3’、新型子帧4’、新型子帧5’,其中新型子帧3’和新型子帧5’的传输方向是上行,而新型子帧4’的传输方向是下行,新型子帧5’的终点至LTE子帧2的终点之间为第二保护间隔GP2。
在基站和UE处理能力提高的前提下,将可能的最快反馈子帧设置为反方向子帧用于反馈,例如:下行新型子帧和上行新型子帧连续间隔排列。如图5所示,如果基站和UE都能在一个新型子帧内完成数据处理并生成反馈,则新型子帧的上下行配置为上下行新型子帧间隔配置。例如,下行数据包1传输在新型子帧0’进行,反馈在新型子帧1’进行,第一次重传在新型子帧2’进行。
因此,本发明实施例中提出对反馈、重传子帧时延的规定:在基站和UE处理能力提高的前提下,将可能的最快反馈子帧设置为反方向子帧用于反馈;将反馈子帧后可能的最快重传子帧设置为与初始传输相同方向的子帧。例如:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
从而,可以最大程度地降低新型子帧的反馈重传时延。
参见图6,在网络侧,本发明实施例提供的一种数据传输装置,包括:
帧结构确定单元11,用于确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
传输单元12,用于按照所述帧结构与所述UE之间进行数据传输。
较佳地,所述帧结构确定单元11,具体用于:
对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
较佳地,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
较佳地,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
较佳地,所述帧结构确定单元11,具体用于:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
较佳地,同一帧中包括多种长度的新型子帧。
较佳地,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
较佳地,所述传输单元还用于:将新型子帧的子帧配置信息通知给所述UE。
较佳地,所述传输单元12还用于:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。
较佳地,所述传输单元12还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
较佳地,该数据传输装置可以是基站。
参见图7,在UE侧,本发明实施例提供的另一种数据传输装置,包括:
帧结构确定单元21,用于确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
传输单元22,用于按照所述帧结构与所述网络侧之间进行数据传输。
较佳地,所述帧结构确定单元21,具体用于:
接收所述网络侧发送的新型子帧的子帧配置信息;
根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
较佳地,所述传输单元22,还用于在所述帧结构确定单元确定与网络侧进行数据传输时需要采用的帧结构之前,上报所述装置所在的UE的能力信息给所述网络侧。
较佳地,所述传输单元22,还用于:
接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
较佳地,所述传输单元22,还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
参见图8,在网络侧,本发明实施例提供的另一种数据传输装置,包括:
处理器500,用于读取存储器520中的程序,执行下列过程:
确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
按照所述帧结构通过收发机510与所述UE之间进行数据传输。
收发机510,用于在处理器500的控制下接收和发送数据。
处理器500确定与用户设备UE进行数据传输时需要采用的帧结构时,具体用于:
对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
处理器500确定与用户设备UE进行数据传输时需要采用的帧结构时,具体还用于:
对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
同一帧中包括多种长度的新型子帧。
所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
处理器500还用于:
通过收发机510将新型子帧的子帧配置信息通知给所述UE。
处理器500还用于:
根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并通过收发机510将调整后的子帧配置信息通知给所述UE。
处理器500还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机510反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机510进行数据重传。
其中,在图8中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器500代表的一个或多个处理器和存储器520代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机510可以是多个元件,即包括发送机和收发机,提供用于在传
输介质上与各种其他装置通信的单元。处理器500负责管理总线架构和通常的处理,存储器520可以存储处理器500在执行操作时所使用的数据。
较佳地,该数据传输装置可以是基站。
参见图9,在UE侧,本发明实施例提供的另一种数据传输装置,包括:
处理器600,用于读取存储器620中的程序,执行下列过程:
确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
按照所述帧结构通过收发机610与所述网络侧之间进行数据传输。
收发机610,用于在处理器600的控制下接收和发送数据。
处理器600确定与网络侧进行数据传输时需要采用的帧结构时,具体用于:
通过收发机610接收所述网络侧发送的新型子帧的子帧配置信息;
根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
处理器600在确定与网络侧进行数据传输时需要采用的帧结构之前,还用于:
通过收发机610上报该装置所在的UE的能力信息给所述网络侧。
处理器600还用于:
通过收发机610接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,通过收发机610与所述网络侧之间进行数据传输。
处理器600还用于:
将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机610反馈数据传输处理结果;和/或,
将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机610进行数据重传。
其中,在图9中,总线架构可以包括任意数量的互联的总线和桥,具体由处理器600代表的一个或多个处理器和存储器620代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起,这些都是本领域所公知的,因此,本文不再对其进行进一步描述。总线接口提供接口。收发机610可以是多个元件,即包括发送机和接收机,提供用于在传输介质上与各种其他装置通信的 单元。针对不同的用户设备,用户接口630还可以是能够外接内接需要设备的接口,连接的设备包括但不限于小键盘、显示器、扬声器、麦克风、操纵杆等。
处理器600负责管理总线架构和通常的处理,存储器620可以存储处理器600在执行操作时所使用的数据。
以上本发明实施例中所述的网络侧的数据传输装置,可以为基站、中继节点(Relay),其中的基站包括宏基站(Macro)、微基站(Micro)、微微基站(Pico)、家庭基站或称为毫微微基站(Femto)等,以及其它可能的采用TDD模式的无线接入点(AP)。
综上所述,本发明实施例通过提供一种长度更小的新型子帧,从而降低采用该新型子帧的数据传输的传输时延。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实 施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。

Claims (45)

  1. 一种数据传输方法,其特征在于,该方法包括:
    确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    按照所述帧结构与所述UE之间进行数据传输。
  2. 根据权利要求1所述的方法,其特征在于,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
    对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
  3. 根据权利要求2所述的方法,其特征在于,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
    或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
  4. 根据权利要求3所述的方法,其特征在于,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
  5. 根据权利要求1所述的方法,其特征在于,确定与用户设备UE进行数据传输时需要采用的帧结构,包括:
    对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
  6. 根据权利要求5所述的方法,其特征在于,同一帧中包括多种长度的新型子帧。
  7. 根据权利要求1所述的方法,其特征在于,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
  8. 根据权利要求1-7任一权项所述的方法,其特征在于,该方法还包括:
    将新型子帧的子帧配置信息通知给所述UE。
  9. 根据权利要求8所述的方法,其特征在于,该方法还包括:
    根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。
  10. 根据权利要求1所述的方法,其特征在于,该方法还包括:
    将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
    将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
  11. 一种数据传输方法,其特征在于,该方法包括:
    用户设备UE确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    所述UE按照所述帧结构与所述网络侧之间进行数据传输。
  12. 根据权利要求11所述的方法,其特征在于,所述UE确定与网络侧进行数据传输时需要采用的帧结构,包括:
    所述UE接收所述网络侧发送的新型子帧的子帧配置信息;
    所述UE根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
  13. 根据权利要求11或12所述的方法,其特征在于,所述UE确定与网络侧进行数据传输时需要采用的帧结构之前,该方法还包括:
    所述UE上报自身的能力信息给所述网络侧。
  14. 根据权利要求11所述的方法,其特征在于,该方法还包括:
    所述UE接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
    所述UE根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
    所述UE按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
  15. 根据权利要求11所述的方法,其特征在于,该方法还包括:
    所述UE将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
    所述UE将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
  16. 一种数据传输装置,其特征在于,该装置包括:
    帧结构确定单元,用于确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    传输单元,用于按照所述帧结构与所述UE之间进行数据传输。
  17. 根据权利要求16所述的装置,其特征在于,所述帧结构确定单元,具体用于:
    对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
  18. 根据权利要求17所述的装置,其特征在于,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
    或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
  19. 根据权利要求18所述的装置,其特征在于,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
  20. 根据权利要求16所述的装置,其特征在于,所述帧结构确定单元,具体用于:
    对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
  21. 根据权利要求20所述的装置,其特征在于,同一帧中包括多种长度的新型子帧。
  22. 根据权利要求16所述的装置,其特征在于,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
  23. 根据权利要求16-22任一权项所述的装置,其特征在于,所述传输单元还用于:将新型子帧的子帧配置信息通知给所述UE。
  24. 根据权利要求23所述的装置,其特征在于,所述传输单元还用于:
    根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并将调整后的子帧配置信息通知给所述UE。
  25. 根据权利要求16所述的装置,其特征在于,所述传输单元还用于:
    将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
    将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
  26. 一种数据传输装置,其特征在于,该装置包括:
    帧结构确定单元,用于确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    传输单元,用于按照所述帧结构与所述网络侧之间进行数据传输。
  27. 根据权利要求26所述的装置,其特征在于,所述帧结构确定单元,具体用于:
    接收所述网络侧发送的新型子帧的子帧配置信息;
    根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时 需要采用的帧结构。
  28. 根据权利要求26或27所述的装置,其特征在于,所述传输单元,还用于在所述帧结构确定单元确定与网络侧进行数据传输时需要采用的帧结构之前,上报所述装置所在的UE的能力信息给所述网络侧。
  29. 根据权利要求26所述的装置,其特征在于,所述传输单元,还用于:
    接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
    根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
    按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,与所述网络侧之间进行数据传输。
  30. 根据权利要求26所述的装置,其特征在于,所述传输单元,还用于:
    将数据传输处理结束时的下一新型子帧作为反馈子帧,反馈数据传输处理结果;和/或,
    将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,进行数据重传。
  31. 一种数据传输装置,其特征在于,包括:
    处理器,用于读取存储器的程序,执行下列过程:
    确定与用户设备UE进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    按照所述帧结构通过收发机与所述UE之间进行数据传输。
    收发机,用于在处理器的控制下接收和发送数据。
  32. 根据权利要求31所述的装置,其特征在于,处理器确定与用户设备UE进行数据传输时需要采用的帧结构时,具体用于:
    对于长期演进LTE系统兼容载波,在LTE系统帧结构中,将部分子帧作为扩展子帧,该扩展子帧中包括多个新型子帧,并且确定所述多个新型子帧的上下行配置。
  33. 根据权利要求32所述的装置,其特征在于,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点对齐;
    或者,所述扩展子帧中的第一个新型子帧的起点与该扩展子帧的起点之间设置有第一保护间隔。
  34. 根据权利要求33所述的装置,其特征在于,当所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点无法对齐时,所述扩展子帧中的最后一个新型子帧的终点与该扩展子帧的终点之间设置有第二保护间隔。
  35. 根据权利要求31所述的装置,其特征在于,处理器确定与用户设备UE进行数据传输时需要采用的帧结构时,具体还用于:
    对于非长期演进LTE系统兼容载波,根据业务数据传输需求和/或所述UE上报的能力信息,确定每一帧中的新型子帧的长度,以及新型子帧的上下行配置。
  36. 根据权利要求35所述的装置,其特征在于,同一帧中包括多种长度的新型子帧。
  37. 根据权利要求31所述的装置,其特征在于,所述帧结构中,下行新型子帧和上行新型子帧间隔排列。
  38. 根据权利要求31-37任一项所述的装置,其特征在于,处理器还用于:
    通过收发机将新型子帧的子帧配置信息通知给所述UE。
  39. 根据权利要求38所述的装置,其特征在于,处理器还用于:
    根据数据传输量和时延需求,对所述新型子帧的子帧配置信息进行调整,并通过收发机将调整后的子帧配置信息通知给所述UE。
  40. 根据权利要求31所述的装置,其特征在于,处理器还用于:
    将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机反馈数据传输处理结果;和/或,
    将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机进行数据重传。
  41. 一种数据传输装置,其特征在于,包括:
    处理器,用于读取存储器中的程序,执行下列过程:
    确定与网络侧进行数据传输时需要采用的帧结构;其中,所述帧结构中包括至少一个新型子帧,该新型子帧包括n个符号,当该新型子帧中包括的循环前缀CP为短CP时,n<14;当该新型子帧中包括的CP为长CP时,n<12;
    按照所述帧结构通过收发机与所述网络侧之间进行数据传输。
    收发机,用于在处理器的控制下接收和发送数据。
  42. 根据权利要求41所述的装置,其特征在于,处理器确定与网络侧进行数据传输时需要采用的帧结构时,具体用于:
    通过收发机接收所述网络侧发送的新型子帧的子帧配置信息;
    根据所述网络侧发送的新型子帧的子帧配置信息,确定与所述网络侧进行数据传输时需要采用的帧结构。
  43. 根据权利要求41或42所述的装置,其特征在于,处理器在确定与网络侧进行数据传输时需要采用的帧结构之前,还用于:
    通过收发机上报该装置所在的UE的能力信息给所述网络侧。
  44. 根据权利要求41所述的装置,其特征在于,处理器还用于:
    通过收发机接收所述网络侧发送的对新型子帧的子帧配置信息进行调整后的子帧配置信息;
    根据所述调整后的子帧配置信息,重新确定与所述网络侧进行数据传输时需要采用的帧结构;
    按照所述重新确定与所述网络侧进行数据传输时需要采用的帧结构,通过收发机与所述网络侧之间进行数据传输。
  45. 根据权利要求41所述的装置,其特征在于,处理器还用于:
    将数据传输处理结束时的下一新型子帧作为反馈子帧,通过收发机反馈数据传输处理结果;和/或,
    将处理完反馈信令后的下一个新型子帧设置为传输方向与初始传输方向相同的重传子帧,通过收发机进行数据重传。
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