WO2018032243A1 - Procédé, dispositif et système d'émission de données - Google Patents

Procédé, dispositif et système d'émission de données Download PDF

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Publication number
WO2018032243A1
WO2018032243A1 PCT/CN2016/095287 CN2016095287W WO2018032243A1 WO 2018032243 A1 WO2018032243 A1 WO 2018032243A1 CN 2016095287 W CN2016095287 W CN 2016095287W WO 2018032243 A1 WO2018032243 A1 WO 2018032243A1
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WIPO (PCT)
Prior art keywords
base station
data
transmitted
terminal device
rate
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PCT/CN2016/095287
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English (en)
Chinese (zh)
Inventor
孙书琪
张劲林
楼群芳
刁英斐
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680087907.3A priority Critical patent/CN109479271A/zh
Priority to PCT/CN2016/095287 priority patent/WO2018032243A1/fr
Publication of WO2018032243A1 publication Critical patent/WO2018032243A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to wireless communication technologies, and in particular, to a data transmission method, apparatus and system.
  • the quality of service provided by the serving cell may be poor.
  • dynamic point selection (Dynamic Point Selection) may be adopted.
  • the DPS) technology provides a data transmission service for the terminal device by using a cell other than the serving cell of the terminal device, or a coordinated cell. If the serving cell and the coordinated cell belong to different base stations, the base station including the serving cell is referred to as a serving base station, and the base station including the coordinated cell is referred to as a cooperative base station.
  • the serving base station When the coordinated cell of the cooperative base station needs to provide the data transmission service for the terminal device, the serving base station needs to first send the data to be transmitted to the cooperative base station. In the delay of transmitting data between two base stations, in order to achieve data synchronization, the serving cell of the serving base station needs to suspend providing data transmission service for the terminal device until the coordinated cell of the cooperative base station completes the data transmission service for the terminal device. And the service cell of the serving base station re-provides the data transmission service for the terminal device. Therefore, in order to ensure synchronization of data transmission between base stations, time waiting and resource waste are caused.
  • the present invention provides a data transmission method, apparatus and system, which can improve transmission efficiency of data transmission to a terminal device in a cooperative transmission scenario.
  • an embodiment of the present invention provides a data transmission method, the method comprising: determining, by a first base station, a rate of transmitting data to be transmitted to a terminal device.
  • the first base station sends the to-be-transmitted data to the second base station in a transmission delay, where the transmission delay is used by the first base station to send all the to-be-transmitted data to the second base station. .
  • the first base station sends the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • the first base station may also send part of the data to be transmitted to the terminal device, thereby fully utilizing the time and idle resources, and improving the transmission efficiency.
  • the first base station further includes the first base station sending the indication information of the rate to the second base station.
  • the method further includes: determining, by the first base station, the terminal device The remaining data to be transmitted is sent, wherein the remaining data to be transmitted is determined by the data to be transmitted, the rate, and the transmission delay.
  • the first base station sends the indication information of the remaining data to be transmitted to the second base station.
  • the first base station determines that the remaining to-be-transmitted data sent to the terminal device includes: the first base station deducts the transmitted data from the to-be-transmitted data.
  • Data, wherein the transmitted data is data that the first base station sends to the terminal device at the rate during the transmission delay.
  • the transmitted data is determined by the product of the rate and the transmission delay.
  • the determining, by the first base station, the rate at which the data to be transmitted is sent to the terminal device includes: determining, by the first base station, the rate of transmitting data to be transmitted to the terminal device by using a modulation coding manner and a quantity of resource blocks, where The resource block is at least one resource block for transmitting the data to be transmitted.
  • the method further includes: determining, by the first base station, an order of the modulation and coding mode according to channel quality indication information sent by the terminal device, where the modulation coding mode has a low order The order of the modulation and coding modes included in the channel quality indication information.
  • the resource block is modulated and encoded using at least one modulation and coding scheme.
  • the determining, by the first base station, the rate of transmitting data to be transmitted to the terminal device includes: determining, by the first base station, respective rates for different terminal devices. Therefore, the first base station and the second base station make full use of time and idle resources during transmission of data to be transmitted to a plurality of terminal devices, thereby improving transmission efficiency.
  • an embodiment of the present invention provides a data transmission method, where the method includes: receiving, by a second base station, data to be transmitted that is sent by a first base station within a transmission delay, where the transmission delay is the second The time taken by the base station to receive all of the data to be transmitted.
  • the second base station determines remaining data to be transmitted transmitted to the terminal device.
  • the second base station will The remaining data to be transmitted is sent to the terminal device.
  • the first base station may send part of the data to be transmitted to the terminal device during the sending of the data to be transmitted to the second base station, without temporarily suspending data transmission with the terminal device, thereby Make full use of time and idle resources to improve transmission efficiency.
  • the determining, by the second base station, the remaining to-be-transmitted data sent to the terminal device includes: determining, by the second base station, the remaining to-be-transmitted according to the indication information of the remaining to-be-transmitted data sent by the first base station data.
  • the method before the second base station receives the data to be transmitted sent by the first base station in the transmission delay, the method further includes: the second base station receiving the indication information sent by the first base station, where the indication The information is used to indicate that the first base station sends the data to be transmitted to the terminal device.
  • the second base station determines that the remaining to-be-transmitted data sent to the terminal device includes: the second base station subtracts the transmitted data from the to-be-transmitted data, where the transmitted data And the data that is sent by the first base station to the terminal device by using the rate in the transmission delay.
  • the transmitted data is determined by the product of the rate and the transmission delay.
  • an embodiment of the present invention provides a base station, where the base station performs the data transmission method described in the foregoing aspect.
  • the base station is a first base station that transmits data to be transmitted to the terminal device.
  • the base station includes a processing unit, configured to determine a rate at which the data to be transmitted is sent to the terminal device.
  • a sending unit configured to send the to-be-transmitted data to the second base station within a transmission delay, where the transmission delay is that the sending unit sends all the to-be-transmitted The time it takes for the data to be sent to the second base station.
  • the sending unit is further configured to send the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • the method further includes: sending, by the sending unit, the indication information of the rate to the second base station .
  • the method further includes: the processing unit is further configured to determine to the terminal The remaining data to be transmitted sent by the device, wherein the remaining data to be transmitted is jointly determined by the data to be transmitted, the rate, and the transmission delay.
  • the sending unit is further configured to send the indication information of the remaining data to be transmitted to the second base station.
  • the processing unit is further configured to determine that the remaining data to be transmitted sent to the terminal device comprises: the processing unit deducting the transmitted data from the data to be transmitted, wherein the transmitted data The data is data that the sending unit sends to the terminal device at the rate during the transmission delay.
  • the transmitted data is determined by the product of the rate and the transmission delay.
  • the processing unit is configured to determine that the rate of sending the data to be transmitted to the terminal device includes: the processing unit determines, by using a modulation coding mode and a quantity of resource blocks, to send the The rate of data to be transmitted, wherein the resource block is at least one resource block for transmitting the data to be transmitted.
  • the processing unit sends a letter according to the terminal device
  • the channel quality indication information determines the modulation and coding scheme, wherein an order of the modulation and coding scheme is lower than an order of a modulation and coding scheme included in the channel quality indication information.
  • the resource block is modulated and encoded using at least one modulation and coding scheme.
  • the processing unit is configured to determine that the rate of transmitting the data to be transmitted to the terminal device comprises: the processing unit separately determining a respective rate for different terminal devices.
  • the base station can implement the function of the behavior of the base station in the above method by hardware.
  • the structure of the base station may include a processor, a receiver, and a transmitter, where the processor may implement the function of the processing unit, and the receiver and the transmitter may implement the functions of the receiving unit and the sending unit, Supporting communication between the base station and the terminal device, transmitting information or instructions involved in the foregoing data transmission method to the terminal device, and receiving information transmitted by the terminal device.
  • the base station can also include a memory for coupling with the processor that stores the necessary program instructions and data for the base station.
  • the base station may also implement corresponding functions in hardware to implement the function of the base station in the foregoing method.
  • the hardware or software includes one or more modules corresponding to the functions described above.
  • the modules can be software and/or hardware.
  • an embodiment of the present invention provides a base station, where the base station performs the data transmission method described in the foregoing aspect.
  • the base station is a second base station that transmits data to be transmitted to the terminal device.
  • the base station includes a receiving unit, configured to receive data to be transmitted that is sent by the first base station in a transmission delay, where the transmission delay is a time used by the base station to receive all the data to be transmitted.
  • a processing unit configured to determine remaining waiting to be sent to the terminal device transfer data.
  • a sending unit configured to send the remaining to-be-transmitted data to the terminal device.
  • the processing unit is configured to determine the remaining data to be transmitted sent to the terminal device, and the processing unit determines the remaining data to be transmitted according to the indication information of the remaining data to be transmitted sent by the first base station.
  • the receiving unit before receiving the data to be transmitted sent by the first base station in the transmission delay, further includes: the receiving unit is further configured to receive the indication information sent by the first base station, where The indication information is used to indicate that the first base station sends the rate of the data to be transmitted to the terminal device.
  • the transmitted data is determined by the product of the rate and the transmission delay.
  • an embodiment of the present invention provides a communication system, where the communication system includes a terminal device and the base station described in the above aspect.
  • the first base station determines a rate at which data to be transmitted is transmitted to the terminal device.
  • the first base station sends the to-be-transmitted data to the second base station in a transmission delay, where the transmission delay is used by the first base station to send all the to-be-transmitted data to the second base station. .
  • the first base station sends the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • the second base station determines remaining data to be transmitted transmitted to the terminal device.
  • the second base station transmits the remaining to be transmitted The data is transmitted to the terminal device.
  • the first base station may simultaneously send data to be transmitted to the second base station and the terminal device within the transmission delay, thereby fully utilizing time and idle resources, and improving transmission efficiency.
  • an embodiment of the present invention provides a computer storage medium for storing computer software instructions for use by the base station, including a program designed to perform the above aspects.
  • the first base station may also send part of the data to be transmitted to the terminal device, and the second base station determines the remaining data to be transmitted and continues to send to the station.
  • the terminal device can be utilized to make full use of time and idle resources in the case of cooperative transmission, thereby improving transmission efficiency.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a data transmission method according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a data transmission method according to another embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a possible implementation manner of a data transmission method according to an embodiment of the present disclosure
  • FIG. 5 is another possible implementation of a data transmission method according to an embodiment of the present invention Schematic diagram of the mode
  • FIG. 6 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a base station according to another embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a base station according to another embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of a base station according to still another embodiment of the present invention.
  • the technical solution proposed by the embodiment of the present invention is based on the communication system 100 shown in FIG. 1.
  • the communication system 100 can support a coordinated transmission mode.
  • the communication system 100 includes at least two base stations (BSs) and at least one terminal device.
  • BSs base stations
  • a terminal device provides data transmission services by various base stations in a cellular network, each base station covering one or more cells.
  • the terminal device is located in the cell edge area, for example, it is far from the serving base station of the local cell, and the serving base station of the cell often has poor service quality to the terminal device.
  • a base station of a neighboring cell, or a cooperative base station may allocate transmission resources and transmit data for the terminal device.
  • the terminal device is also referred to as a collaborative user.
  • two cooperative users are included, which are a terminal device 20 and a terminal device 21, respectively, and two base stations, which are a base station 10 and a base station 11, respectively.
  • the base station 10 covers the cell A, and the base station 11 covers the cell B.
  • the terminal devices 20 and 21 are both located at the edge of the cell A.
  • the base station 10 serving as the serving base station may have poor quality of service to the terminal device 20 and the terminal device 21, and thus may be used as the cooperative base station by the base station 11 covering the neighboring cell B.
  • the base station 10 transmits the data to be transmitted to the base station 11, and then the base station 11 allocates resources for the terminal device 20 and the terminal device 21 and continues to transmit data.
  • the communication system 100 may be a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, or a Wideband Code Division Multiple Access (Wideband Code). Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE time division duplex (Time Division Duplex, TDD), Universal Mobile Telecommunication System (UMTS), and other wireless communication systems using orthogonal frequency division (OFDM) technology.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • Wideband Code Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • OFDM orthogonal frequency division
  • the terminal device may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the terminal device may be connected to the radio access network ( The Radio Access Network (RAN) communicates with one or more core networks.
  • the Radio Access Network communicates with one or more core networks.
  • the terminal device may be a mobile phone (or "cellular" phone), a computer with a mobile terminal, etc., and may also be portable, pocket-sized, handheld. Mobile, built-in or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
  • the base station may be a base station (Base Transceiver Station, BTS) in GSM or CDMA, or may be a base station (NodeB, NB) in WCDMA, or may be an evolved base station in LTE (Evolutional Node B). , eNB or e-NodeB), or a base station device in a future network.
  • BTS Base Transceiver Station
  • NodeB NodeB
  • NB evolved base station in LTE (Evolutional Node B).
  • eNB or e-NodeB evolved base station in LTE (Evolutional Node B).
  • eNB evolved base station
  • e-NodeB evolved base station device in a future network.
  • the embodiment of the present invention does not specifically limit the base station and the terminal device.
  • the number of base stations, terminal devices, and cells included in the communication system 100 shown in FIG. 1 is merely an example, and the embodiment of the present invention is not limited thereto.
  • more base stations, cells covered by the base station, and terminal devices communicating with the base station may be included, which are more concise and are not described in the drawings.
  • Communication system 100 may not be limited to include the base station and terminal equipment, and may also include, for example, a core network device or a device for carrying virtualized network functions, etc., as will be apparent to those of ordinary skill in the art, Detailed one by one.
  • the cooperative base station In the normal cooperative transmission mode, when the cooperative base station is required to send data to the terminal device, all the data to be transmitted needs to be sent by the serving base station to the cooperative base station.
  • the transmission data between the serving base station and the cooperative base station generally has a transmission delay of several milliseconds to ten milliseconds.
  • the serving base station needs to suspend sending data to the terminal device until the cooperative base station completes data transmission service for the terminal device and is re-established by the serving base station for the terminal The device provides data transmission services, resulting in waiting for time and idle resources.
  • the serving base station determines the rate at which the data to be transmitted is sent to the terminal device, and the rates may be the same or different for different terminal devices.
  • the serving base station sends the data to be transmitted to the terminal device by using the rate in the transmission delay of the data to be transmitted to the coordinated base station.
  • the cooperative base station After the cooperative base station receives all the data to be transmitted, it may determine data that the serving base station has transmitted to the terminal device and remaining data to be transmitted, and continue to send the remaining to-be-transmitted data to the coordinated base station. The terminal device.
  • the serving base station may send part of the to-be-transmitted data to the terminal device while transmitting the transmission delay of the data to be transmitted to the cooperative base station, and fully utilize the time and idle time. Resources improve the efficiency of data transmission.
  • the serving base station is referred to as a first base station
  • the cooperative base station is referred to as a second base station.
  • the resources involved in the embodiments of the present invention are time-frequency resources.
  • FIG. 2 is a flow chart showing a data transmission method provided by an embodiment of the present invention.
  • the data transmission method specifically includes:
  • Step S201 The first base station determines a rate at which data to be transmitted is sent to the terminal device.
  • the first base station determines, by using a channel quality indicator (CQI) information sent by the terminal device, a rate of sending data to be transmitted to the terminal device.
  • the rate is a fixed rate, which is determined by the number of resource blocks used to transmit the data to be transmitted and the Modulation and Coding Scheme (MCS).
  • CQI channel quality indicator
  • MCS Modulation and Coding Scheme
  • the first base station allocates at least one resource block to the terminal device.
  • the number of resource blocks can be allocated according to the requirements of the data to be transmitted.
  • the number of resource blocks may also be determined jointly according to the requirements of the data to be transmitted and the needs of other users in the serving cell of the first base station.
  • Different resource blocks may be modulated and coded by using the same MCS, or may be modulated and coded by using different MCSs, which are not specifically limited herein, as long as the number of resource blocks for transmitting data and the rate determined by the MCS are unchanged. can.
  • all resource blocks can be modulated and encoded using the same MCS.
  • one MCS may be used for modulation and coding, and for another part of the resource block, another MCS may be used for modulation and coding, as long as the total number determined by the number of the MCS and the resource block is guaranteed.
  • the rate can be changed.
  • the first base station determines by using CQI information sent by the terminal device.
  • MCS is a lower order MCS.
  • the CQI information includes an MCS that is determined by the terminal device and is suitable for a current channel quality.
  • the CQI information may include an order of an MCS suitable for a current channel quality.
  • the first base station may determine, by using an MCS whose order is lower than the MCS order included in the CQI information, and perform modulation coding on the resource block used to send the to-be-transmitted data.
  • the first base station may adopt an MCS lower than the 20th order when determining the rate, for example, 15-18 steps.
  • MCS the MCS determined in the CQI information sent by the terminal device is suitable for the current channel quality. Since the high-order MCS has a faster transmission speed but a higher bit error rate, the advantage of using a lower-order MCS is that the bit error rate of the data transmission can be reduced as much as possible, the number of retransmissions is reduced, and even no retransmission is required. To ensure accurate synchronization of data transmission.
  • the first base station e.g., base station 10 in Figure 1
  • the first base station can determine the rate of transmission data for each of the terminal devices according to the data to be transmitted transmitted to each terminal device as needed.
  • the rates may be the same or different for different terminal devices.
  • the manner of determining the rate may be determined by using the CQI sent by each terminal device as described in the foregoing, and the specific determining manner is not described again.
  • Step S202 The first base station sends the to-be-transmitted data to the second base station within a transmission delay.
  • the transmission delay is a time used by the first base station to send all the to-be-transmitted data to the second base station.
  • the transmission delay is preset by the system, that is, The transmission delay between the first base station and the second base station is determined.
  • Step S203 The first base station sends the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • step S202 and step S203 may be performed simultaneously.
  • the first base station may send a part of the to-be-transmitted data to the terminal device by using the rate in the transmission delay, thereby avoiding data transmission stagnation in the transmission delay. Making full use of the transmission delay to improve data transmission efficiency.
  • FIG. 3 is a flow chart showing a data transmission method according to another embodiment of the present invention.
  • the data transmission method specifically includes:
  • Step S301 The second base station receives the data to be transmitted that is sent by the first base station in the transmission delay.
  • the transmission delay is a time used by the second base station to receive all the data to be transmitted.
  • Step S302 the second base station determines remaining data to be transmitted sent to the terminal device.
  • Step S303 the second base station sends the remaining to-be-transmitted data to the terminal device.
  • the first base station sends data to be transmitted to the second base station and the terminal device in the transmission delay, and then continues to be the terminal by the second base station.
  • the device sends the remaining data to be transmitted, so that the transmission delay and idle system resources can be fully utilized, the total time for the terminal device to receive the data to be transmitted is shortened, and the efficiency of data transmission is improved.
  • FIG. 4 shows a schematic diagram of one of the possible implementations. The above-mentioned one possible implementation manner in the above embodiments will be described in detail in an interactive manner with reference to FIG. 4 .
  • the first base station determines a rate at which data to be transmitted is sent to the terminal device.
  • the method for determining the rate is the same as that of S201, and details are not described herein again.
  • the first base station sends the indication information of the rate to the second base station.
  • the first base station indicates the rate by using explicit indication information.
  • the first base station may carry the specific value of the rate in the indication information and send it to the second base station.
  • the first base station may also indicate the rate by using implicit indication information. As described above, the rate is determined by the number of resource blocks and the MCS. Therefore, the first base station may also send the number of resource blocks and the MCS in the indication information to the second base station. The second base receives the indication information and determines the rate by the number of resource blocks in the indication information and the MCS.
  • the first base station may carry the specific value of the rate of sending the data to be transmitted determined by each of the terminal devices in the indication information, and send the information to the Said second base station.
  • the first base station may also carry the number of resource blocks allocated to each of the terminal devices and the MCS in the indication information, and send the indication information to the second base station, where the second base receives the indication information and determines to target Each said The rate of the terminal device.
  • the first base station sends the to-be-transmitted data to the second base station within a transmission delay.
  • the first base station sends the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • steps S202 and S203 steps S403 and S404 are also performed simultaneously.
  • the second base station receives the to-be-transmitted data that is sent by the first base station in a transmission delay.
  • the second base station determines remaining data to be transmitted sent to the terminal device.
  • the second base station determines the remaining to-be-transmitted data by subtracting the transmitted data from the to-be-transmitted data.
  • the transmitted data is data that is sent by the first base station to the terminal device by using the rate in the transmission delay, and the transmitted data passes the product of the rate and the transmission delay. to make sure.
  • the second base station determines remaining data to be transmitted sent to each of the terminal devices.
  • the second base station sends the remaining to-be-transmitted data to the terminal device.
  • the second base station allocates a transmission resource for the remaining to-be-transmitted data, and sends the remaining to-be-transmitted data to the terminal device.
  • the terminal device receives the remaining to-be-transmitted data sent by the second base station.
  • FIG. 5 shows a schematic diagram of the other possible implementation.
  • the other possible implementation manner in the above embodiment will be described in detail in an interactive manner with reference to FIG. 5.
  • the first base station determines a rate at which data to be transmitted is sent to the terminal device.
  • the method for determining the rate is the same as that of S201, and details are not described herein again.
  • the first base station sends the to-be-transmitted data to the second base station within a transmission delay.
  • the first base station sends the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • steps S202 and S203 steps S502 and S503 are also performed simultaneously.
  • the first base station determines remaining data to be transmitted sent to the terminal device.
  • the remaining data to be transmitted is determined by the data to be transmitted, the rate, and the transmission delay.
  • the first base station determines the remaining to-be-transmitted data by subtracting the transmitted data from the to-be-transmitted data.
  • the transmitted data is data that is sent by the first base station to the terminal device by using the rate in the transmission delay, and the transmitted data passes the product of the rate and the transmission delay. to make sure.
  • the first base station determines remaining data to be transmitted sent to each of the terminal devices.
  • the first base station sends the indication information of the remaining data to be transmitted to the second base station.
  • the second base station receives the remaining to-be-transmitted transmission sent by the first base station Information indicating the data.
  • the indication information of the remaining data to be transmitted may be indication information of a starting position of remaining data to be transmitted.
  • the indication information of the remaining data to be transmitted may also be the data amount information of the remaining data to be transmitted, and the second base station determines the starting position transmitted to the terminal device according to the data amount of the remaining number of to-be-transmitted.
  • the first base station may send indication information of remaining data to be transmitted of each of the terminal devices to the second base station.
  • the second base station determines remaining data to be transmitted sent to the terminal device.
  • the second base station determines, according to the indication information of the remaining data to be transmitted, the remaining data to be transmitted that needs to be sent to the terminal device.
  • the second base station sends the remaining to-be-transmitted data to the terminal device.
  • the data transmission method provided by the foregoing embodiment of the present invention effectively avoids the waiting of time and the idleness of resources in the process of transmitting data between base stations in the case of cooperative transmission, thereby improving the efficiency of data transmission.
  • each network element such as a terminal device, an access network device, a core network device, etc.
  • each network element includes hardware structures and/or software modules corresponding to each function.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is executed by hardware or computer software to drive hardware, depending on the technical solution Specific application and design constraints. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • FIG. 6 shows a possible structural diagram of a base station involved in the above embodiment.
  • the base station can serve as a first base station that transmits data to be transmitted to the terminal device, such as the base station 10 shown in FIG.
  • the base station includes a processing unit 601 and a sending unit 602.
  • the processing unit 601 is configured to determine a rate at which data to be transmitted is sent to the terminal device.
  • the sending unit 602 is configured to send the to-be-transmitted data to the second base station in a transmission delay, where the transmission delay is used by the sending unit to send all the to-be-transmitted data to the second base station. time.
  • the sending unit 602 is further configured to send the to-be-transmitted data to the terminal device by using the rate in the transmission delay.
  • the sending unit 602 simultaneously sends the to-be-transmitted data to the second base station and the terminal device within the transmission delay, thereby avoiding data transmission stagnation in the transmission delay, thereby fully
  • the data transmission efficiency is improved by using the transmission delay and idle resources.
  • the processing unit 601 is further configured to determine the rate by using CQI information sent by the terminal device.
  • the rate is determined by the number of resource blocks and the MCS, wherein the resource block is a resource block for transmitting the data to be transmitted.
  • the processing unit 601 is further configured to allocate at least one resource block to the terminal device.
  • the number of resource blocks can be allocated according to the requirements of the transmitted data.
  • the number of resource blocks may also be small according to the requirement of data to be transmitted and the service of the first base station. The needs of other users in the zone are determined together.
  • Different resource blocks may be modulated and coded by using the same MCS, or may be modulated by different MCSs, as long as the number of resource blocks for transmitting data and the rate determined by the MCS are unchanged.
  • the processing unit 601 determines an MCS by using CQI information sent by the terminal device.
  • the MCS is a lower order MCS.
  • the CQI information includes an MCS that is determined by the terminal device and is suitable for a current channel quality.
  • the CQI information may include an order of an MCS suitable for a current channel quality.
  • the determining, by the processing unit 601, determining, by using the MCS whose order is lower than the MCS order included in the CQI information, to perform modulation coding on the resource block used to send the to-be-transmitted data.
  • the advantage of this is that the bit error rate of data transmission can be reduced as much as possible, the number of retransmissions can be reduced, and even retransmission is not required, thereby ensuring accurate synchronization of data transmission.
  • the number of the resource blocks and the specific configuration of the MCS may be as described in step S201 in the method shown in FIG. 2, and details are not described herein again.
  • the processing unit 601 is configured to determine, for each of the terminal devices, a rate at which data to be transmitted is transmitted.
  • the rates may be the same or different for different terminal devices.
  • the sending unit 602 is further configured to send the indication information of the rate to the second base station.
  • the processing unit 601 may carry the specific value of the rate in the indication information, and send the information to the second base station by using the sending unit 602.
  • the treatment The unit 601 may also carry the number of resource blocks and the MCS in the indication information, and send the signal to the second base station by using the sending unit 602.
  • the multiple processing users may be present.
  • the processing unit 601 may carry, in the indication information, a specific value that is determined by each of the terminal devices to send data to be transmitted.
  • the sending unit 602 sends the second base station.
  • the processing unit 601 may also carry the number of resource blocks and the MCS allocated for each of the terminal devices in the indication information, and send the same to the second base station by using the sending unit 602.
  • the processing unit 601 is further configured to determine remaining data to be transmitted sent to the terminal device, where the remaining data to be transmitted is through the data to be transmitted, the rate and The transmission delays are jointly determined.
  • the processing unit 601 determines the remaining data to be transmitted by subtracting the transmitted data from the data to be transmitted.
  • the transmitted data is data that the sending unit 602 sends to the terminal device at the rate in the transmission delay, and the transmitted data passes the product of the rate and the transmission delay. to make sure.
  • the processing unit 601 determines remaining data to be transmitted sent to each of the terminal devices.
  • the sending unit 602 is further configured to send the indication information of the remaining data to be transmitted to the second base station.
  • the indication information of the remaining data to be transmitted may be explicit indication information.
  • the indication information of the remaining data to be transmitted may be indication information of a starting position of remaining data to be transmitted.
  • the indication information of the remaining data to be transmitted may also be implicit Instructions.
  • the indication information of the remaining data to be transmitted may be data amount information that has been transmitted by the first base station.
  • the sending unit 602 is further configured to send, to the second base station, indication information of remaining data to be transmitted of each of the terminal devices.
  • the base station further includes a receiving unit 603.
  • each of the above units may be hardware having a function of executing each module, or may be another hardware device capable of executing a corresponding computer program to perform the above functions.
  • FIG. 7 shows a possible structural diagram of a base station involved in the above embodiment.
  • the base station includes a processor 701, a transmitter 702, and a receiver 703.
  • the function of the processing unit 601 in FIG. 6 can be implemented by the processor 701.
  • the function of the sending unit 602 can be implemented by the transmitter 702, and the function of the receiving unit 603 can be implemented by the receiver 703.
  • the transmitter 702 and the receiver 703 may be configured to support data transmission and reception between the base station and the terminal device in the foregoing embodiment.
  • the base station can also include a memory 704 that can be used to store program codes and data for the base station.
  • the various components in the base station are coupled together to support the data involved in the embodiment as shown in Figures 2-5.
  • Figure 7 only shows a simplified design of the base station.
  • the base station may include any number of transmitters, receivers, processors, controllers, memories, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • FIG. 8 is a schematic diagram showing another possible structure of a base station involved in the above embodiment.
  • the base station can serve as a second base station that transmits data to be transmitted to the terminal device, such as the base station 11 shown in FIG.
  • the base station includes a receiving unit 801, a processing unit 802, and a transmitting unit 803.
  • the receiving unit 801 is configured to receive data to be transmitted that is sent by the first base station in a transmission delay, where the transmission delay is a time used by the base station to receive all the data to be transmitted.
  • the processing unit 802 is configured to determine remaining data to be transmitted sent to the terminal device.
  • the sending unit 803 is configured to send the remaining to-be-transmitted data to the terminal device.
  • the receiving unit is further configured to receive indication information of remaining data to be transmitted sent by the first base station.
  • the indication information of the remaining data to be transmitted may be indication information of a starting position of remaining data to be transmitted.
  • the indication information of the remaining data to be transmitted may also be the data amount information of the remaining data to be transmitted.
  • the processing unit 802 is further configured to determine, according to the indication information of the remaining data to be transmitted, the remaining data to be transmitted.
  • the receiving unit 801 is further configured to receive the indication information sent by the first base station, where the indication information is used to indicate that the first base station is located The rate at which the terminal device sends the data to be transmitted.
  • the processing unit 802 is further configured to determine remaining to-be-transmitted data that is sent to the terminal device, where the remaining to-be-transmitted data is obtained by subtracting the transmitted data from the to-be-transmitted data.
  • the transmitted data is data that the first base station sends to the terminal device by using the fixed rate in the transmission delay.
  • the processing unit 802 determines the transmitted data by a product of the rate and the transmission delay.
  • the processing unit 802 determines remaining data to be transmitted sent to each of the terminal devices.
  • each of the above units may be hardware having a function of executing each module, or may be another hardware device capable of executing a corresponding computer program to perform the above functions.
  • FIG. 9 shows a possible structural diagram of a base station involved in the above embodiment.
  • the base station includes a receiver 901, a processor 902, and a transmitter 903.
  • the function of the receiving unit 801 in FIG. 8 can be implemented by the receiver 901.
  • the function of the processing unit 802 can be implemented by the processor 901, and the function of the sending unit 803 can be implemented by the transmitter 903.
  • the receiver 901 and the transmitter 903 can be used to support data transmission and reception between the base station and the terminal device in the foregoing embodiment.
  • the base station may further include a memory 904, It can be used to store program code and data of a base station.
  • the various components in the base station are coupled together to support the functions of the second base station in the data transmission method involved in the embodiment shown in Figures 2-5.
  • Figure 9 only shows a simplified design of the base station.
  • the base station may include any number of transmitters, receivers, processors, controllers, memories, etc., and all base stations that can implement the present invention are within the scope of the present invention.
  • the various illustrative logic blocks, modules and circuits described in the embodiments of the invention may be implemented by a general purpose processing unit, a digital signal processing unit, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic. Devices, discrete gate or transistor logic, discrete hardware components, or any combination of the above are designed to implement or operate the functions described.
  • the general purpose processing unit may be a micro processing unit.
  • the general purpose processing unit may be any conventional processing unit, controller, microcontroller or state machine.
  • the processing unit may also be implemented by a combination of computing devices, such as a digital signal processing unit and a microprocessing unit, a plurality of microprocessing units, and one or more microprocessing units in conjunction with a digital signal.
  • the cell core or any other similar configuration, is implemented.
  • the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software module executed by a processing unit, or a combination of the two.
  • the software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processing unit such that the processing unit can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processing unit.
  • the processing unit and the storage medium may be configured in an ASIC, and the ASIC may be configured in the user terminal. Alternatively, the processing unit and the storage medium may also be configured in different components in the user terminal.
  • the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions can be stored on a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes computer storage media and communication media that facilitates the transfer of computer programs from one place to another.
  • the storage medium can be any available media that any general purpose or special computer can access.
  • Such computer-readable media can include, but is not limited to, RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage device, or any other device or data structure that can be used for carrying or storing Other media that can be read by a general purpose or special computer, or a general or special processing unit.
  • any connection can be appropriately defined as a computer readable medium, for example, if the software is from a website site, server or other remote resource through a coaxial cable, fiber optic computer, Twisted pair, digital subscriber line (DSL) or wirelessly transmitted in, for example, infrared, wireless, and microwave, are also included in the defined computer readable medium.
  • DSL digital subscriber line
  • the disks and discs include compact disks, laser disks, optical disks, DVDs, floppy disks, and Blu-ray disks. Disks typically replicate data magnetically, while disks typically optically replicate data with a laser. Combinations of the above may also be included in a computer readable medium.

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé, un dispositif et un système d'émission de données. Le procédé comporte les étapes suivantes: une première station de base détermine un débit de données d'envoi de données à émettre à un appareil terminal, et envoie, à une deuxième station de base et dans une latence d'émission, les données à émettre; la première station de base envoie, à l'appareil terminal, en utilisant le débit de données et dans la latence d'émission, les données à émettre; la deuxième station de base détermine des données restantes à émettre vers un appareil terminal; et la deuxième station de base envoie, à l'appareil terminal, les données restantes à émettre. Par conséquent, le mode de réalisation tire pleinement parti des latences d'émission et des ressources du système, accroissant le rendement de l'émission de données.
PCT/CN2016/095287 2016-08-15 2016-08-15 Procédé, dispositif et système d'émission de données WO2018032243A1 (fr)

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CN201680087907.3A CN109479271A (zh) 2016-08-15 2016-08-15 数据传输方法、装置和系统
PCT/CN2016/095287 WO2018032243A1 (fr) 2016-08-15 2016-08-15 Procédé, dispositif et système d'émission de données

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