WO2016015317A1 - 一种确定数据传输的方法及装置 - Google Patents
一种确定数据传输的方法及装置 Download PDFInfo
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- WO2016015317A1 WO2016015317A1 PCT/CN2014/083490 CN2014083490W WO2016015317A1 WO 2016015317 A1 WO2016015317 A1 WO 2016015317A1 CN 2014083490 W CN2014083490 W CN 2014083490W WO 2016015317 A1 WO2016015317 A1 WO 2016015317A1
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- subframe
- uplink
- time period
- downlink
- communication device
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
- H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/14—Two-way operation using the same type of signal, i.e. duplex
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to the field of mobile communication technologies, and in particular, to a method and apparatus for determining data transmission.
- a plurality of base stations use the same frequency resource, that is, use one carrier to transmit data.
- a base station and a UE transmit data in different subframes in a TDD frame, where the uplink subframe in the TDD frame is used to transmit uplink data, and the downlink subframe in the TDD frame. Used to transmit downlink data.
- the base stations need to compete with each other for a period of time during which data can be transmitted on the secondary carrier.
- the base station may be used according to a preset uplink and downlink ratio of the TDD frame of the secondary carrier (representing the ratio of the uplink subframe to the downlink subframe in a TDD frame).
- the downlink subframe of the transmission scheduling information is transmitted to the UE by using a PDCCH (Physical Downlink Control Channel), and after receiving the scheduling information transmitted by the UE, the UE may be configured according to the uplink and downlink ratio and the scheduling.
- PDCCH Physical Downlink Control Channel
- the information is transmitted to the base station in some uplink subframes, and the base station transmits and receives the uplink in the downlink subframe for transmitting the feedback signal, I according to the uplink-downlink ratio and the receiving the uplink data.
- a feedback message corresponding to the case of the data to the UE, so that the UE further determines, according to the feedback information corresponding to the case of receiving the uplink data, whether the uplink subframe with the same uplink subframe number is the same in the next TDD frame. Pass the upstream data.
- the UE transmits the uplink data to the base station.
- the time when the uplink subframe is located at the base station In the segment the uplink subframe in the time period available to the base station cannot transmit uplink data to the base station, and the downlink subframe used to transmit the feedback information is not used because the base station cannot send the scheduling information to the UE.
- the base station After the UE is transmitting the uplink data to the base station, the base station cannot transmit the feedback information corresponding to the case of receiving the uplink data to the UE, and the base station and the UE cannot communicate normally, which is reduced. Communication efficiency between the base station and the UE.
- Embodiments of the present invention provide a method and apparatus for determining data transmission, which can ensure normal communication between a base station and a UE, thereby improving communication efficiency between the base station and the UE.
- an embodiment of the present invention provides a communications device, including: a determining unit, configured to determine that a current subframe belongs to a first time period, where A time period is a time period scheduled by the secondary carrier;
- the determining unit is further configured to determine data transmission of the current subframe.
- the determining unit is specifically configured to determine that the current subframe belongs to the first time period, and the first subframe that meets a preset mapping relationship with the current subframe belongs to a second time period, where the second subframe
- the time period is a time period during which the secondary carrier stops scheduling.
- the communications device further includes an acquiring unit,
- the obtaining unit is configured to determine, before the determining unit, that the current subframe belongs to the first time period, and before the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period , Get the preset first uplink and downlink ratio.
- mapping relationship is a scheduling relationship
- the determining unit is configured to determine, according to the first uplink and downlink ratio that the acquiring unit obtains, that the current subframe is a first uplink subframe, where the first subframe is the first uplink The subframe satisfies the first downlink subframe of the scheduling relationship, and according to the Determining, by the acquiring unit, the first time period and the second time period, determining that the first uplink subframe is one uplink subframe in the first time period, where the first downlink subframe is a downlink subframe in the second time period, and determining to transmit downlink data in the first uplink subframe.
- the communications unit further includes a setting unit
- the determining unit is specifically configured to determine that the current subframe is the first subframe of the first time period
- the setting unit is configured to set a subframe number of the first subframe determined by the determining unit to a preset second subframe number, where the second subframe number is used to represent the first The first subframe that meets a preset mapping relationship with the first subframe belongs to the first time period;
- the determining unit is specifically configured to determine data transmission of the first subframe according to the second subframe number set by the setting unit.
- the communications device further includes an acquiring unit
- the obtaining unit is configured to obtain a second uplink and downlink ratio before the determining unit determines the data transmission of the current subframe;
- the determining unit is specifically configured to determine data transmission of the first subframe according to the second subframe number set by the setting unit and the second uplink and downlink ratio obtained by the acquiring unit.
- the communications device further includes an acquiring unit,
- the obtaining unit is configured to obtain a second uplink and downlink ratio before the determining unit determines the data transmission of the current subframe;
- the determining unit is specifically configured to determine that the current subframe is the first subframe of the first time period, and determine, according to the second uplink and downlink ratio obtained by the acquiring unit, Data transfer of the first subframe.
- the communication device is a UE
- the mapping relationship is a feedback relationship
- the determining unit is specifically configured to determine, according to the first time period and the second time period acquired by the acquiring unit,
- the first uplink subframe is one uplink subframe in the first time period
- the second downlink subframe is one downlink subframe in the second time segment
- the UE further includes a sending unit,
- the sending unit is configured to send uplink data to the base station in the first uplink subframe determined by the determining unit, and store the uplink data in a transmission buffer;
- the determining unit is further configured to determine that the base station correctly receives the uplink data sent by the sending unit.
- the determining unit is further configured to: after determining that the base station does not correctly receive the uplink data sent by the sending unit, determine, in the CIF, the carrier indication field CIF carried in the scheduling information received by the third downlink subframe. Carrying the process ID of the uplink data, and determining, according to the process ID, that the sending unit sends the uplink data to the base station in a third uplink subframe, where the third downlink subframe is the second downlink Dispatching a downlink subframe of the third uplink subframe after the subframe, where the third uplink subframe is in the first time segment, after the first uplink subframe, and the first uplink subframe An uplink subframe with the smallest difference in subframe numbers.
- the communication device is a base station, and the mapping relationship is a feedback relationship.
- the determining unit is specifically configured to determine that the current subframe is a first uplink subframe, where the first subframe is a second downlink subframe where feedback information corresponding to the first uplink subframe is located, where The second downlink subframe is one downlink subframe in the second time period.
- the base station further includes a receiving unit
- the determining unit is further configured to: after the receiving unit correctly receives the uplink data in the first uplink subframe, determine that the feedback message is not sent in the second downlink subframe Interested in the UE.
- the determining unit is further configured to: the receiving unit does not correctly receive the uplink data in the first uplink subframe, and determines that the sending unit sends scheduling information in a third downlink subframe, where the scheduling information is used for scheduling.
- the scheduling information carries a CIF, where the CIF carries the process ID of the uplink data.
- the communication device is a UE or a base station.
- an embodiment of the present invention provides a communications device, including:
- a processor configured to determine that the current subframe belongs to the first time period, where the first time period is a time period scheduled by the secondary carrier, and determining data transmission of the current subframe.
- the processor is configured to determine that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period, where the second subframe
- the time period is a time period during which the secondary carrier stops scheduling.
- the processor is further configured to: before determining that the current subframe belongs to the first time period, and the first subframe that meets a preset mapping relationship with the current subframe belongs to the second time period, Get the preset first uplink and downlink ratio.
- mapping relationship is a scheduling relationship
- the processor is configured to determine, according to the first uplink and downlink ratio, that the current subframe is a first uplink subframe, where the first subframe meets the scheduling with the first uplink subframe a first downlink subframe of the relationship, and determining, according to the first time period and the second time period, that the first uplink subframe is one uplink in the first time period a subframe, the first downlink subframe is one downlink subframe in the second time period, and determining to transmit downlink data in the first uplink subframe.
- the processor is specifically configured to determine that the current subframe is the first subframe of the first time period, and set the subframe number of the first subframe to a preset second subframe.
- a first subframe that is used to represent the first subframe or that meets a preset mapping relationship with the first subframe belongs to the first time period, and according to the Describe a second subframe number, and determine data transmission of the first subframe.
- the processor is further configured to obtain a second uplink and downlink ratio before determining data transmission of the current subframe
- the processor is specifically configured to determine data transmission of the first subframe according to the second subframe number and the second uplink and downlink ratio.
- the processor is further configured to: before determining data transmission of the current subframe, acquire a second uplink and downlink ratio, and determine that the current subframe is the first subframe of the first time period And determining, according to the second uplink-downlink ratio, data transmission of the first subframe.
- the communications device is a UE
- the mapping relationship is a feedback relationship
- the processor is configured to determine, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the second downlink The subframe is one downlink subframe in the second time period;
- the UE further includes a transmitter
- the transmitter is configured to send uplink data to the base station in the first uplink subframe determined by the processor, and store the uplink data in a transmission buffer;
- the processor is further configured to determine that the base station correctly receives the uplink data sent by the transmitter.
- the processor is further configured to: after determining that the base station does not correctly receive the uplink data sent by the transmitter, determine a carrier indication domain CIF carried in the scheduling information received by the third downlink subframe, where the CIF is in the CIF. Carrying the process ID of the uplink data, and determining, according to the process ID, that the sender sends the uplink data to the base station in the first uplink subframe, where the third downlink subframe is the Dispatching a downlink subframe of the third uplink subframe after the second downlink subframe, where the third uplink subframe is in the first time segment, after the first uplink subframe, and the first uplink subframe The one subframe in which the subframe number of the frame differs the least.
- the communication device is a base station, and the mapping relationship is a feedback relationship.
- the processor is specifically configured to determine that the current subframe is a first uplink subframe, where the first subframe is a second downlink subframe where feedback information corresponding to the first uplink subframe is located, where The second downlink subframe is one downlink subframe in the second time period.
- the base station further includes a receiver
- the processor is further configured to: after the receiver correctly receives the uplink data in the first uplink subframe, determine that the second downlink subframe does not send feedback information to the UE.
- the processor is further configured to: the receiver does not correctly receive the uplink data in the first uplink subframe, and determine that the transmitter sends scheduling information in the third downlink subframe, where the scheduling The information is used to schedule a third uplink subframe, where the scheduling information carries a CIF, and the CIF carries the process ID of the uplink data.
- the communication device is a UE or a base station.
- an embodiment of the present invention provides a method for determining data transmission, including:
- the communication device determines that the current subframe belongs to the first time period, and the first time period is a time period scheduled by the secondary carrier;
- the communication device determines data transmission of the current subframe.
- the determining, by the communications device, that the current subframe belongs to the first time period includes:
- the communication device determines that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period, where the second time period is The time period during which the secondary carrier stops scheduling.
- the communications device determines that the current subframe belongs to the first time period, and satisfies the current subframe The first subframe of the mapping relationship belongs to the second time period, and the method further includes:
- the communication device acquires a preset first uplink and downlink ratio.
- mapping relationship is a scheduling relationship
- the communication device determines that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period, and includes:
- the communication device Determining, by the communication device, that the current subframe is a first uplink subframe according to the first uplink and downlink ratio, where the first subframe is the first that satisfies the scheduling relationship with the first uplink subframe a downlink subframe, and determining, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the first downlink subframe The frame is one downlink subframe in the second time period;
- the determining, by the communications device, the data transmission of the current subframe includes: the communications device determining to transmit downlink data in the first uplink subframe.
- the communications device determines The first subframe belongs to the first time period, and includes:
- the communication device determines that the current subframe is the first subframe of the first time period
- the communications device sets the subframe number of the first subframe to a preset second subframe number, where the second The first subframe that is used to represent the first subframe or that meets a preset mapping relationship with the first subframe belongs to the first time period;
- the communication device determines data transmission of the first subframe according to the second subframe number.
- the method before the communications device determines the data transmission of the current subframe, the method further includes:
- the communication device acquires a second uplink and downlink ratio
- the determining, by the communications device, the data transmission of the current subframe includes: the communications device determining, according to the second subframe number and the second uplink-downlink ratio, data transmission of the first subframe.
- the method before the communications device determines the data transmission of the current subframe, the method further includes:
- the communication device acquires a second uplink and downlink ratio
- the determining, by the communications device, that the current subframe belongs to the first time period includes: the communications device determining that the current subframe is the first subframe of the first time period;
- the determining, by the communications device, the data transmission of the current subframe includes: determining, by the communications device, data transmission of the first subframe according to the second uplink and downlink ratio.
- the communication device is a UE
- the mapping relationship is a feedback relationship
- the communication device determines that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time Intersection, including:
- the UE Determining, by the UE, that the first uplink subframe is one uplink subframe in the first time period, and the second downlink subframe is the foregoing, according to the first time period and the second time period, a downlink subframe in the second time period;
- the determining, by the communications device, the data transmission of the current subframe includes: sending, by the UE, uplink data to the base station in the first uplink subframe, and storing the uplink data in a transmission buffer;
- the UE determines that the base station correctly receives the uplink data.
- the UE sends uplink data to the base station in the first uplink subframe, and the UE determines that the base station does not correctly receive the After the uplink data is described, the method further includes:
- the UE determines a carrier indication field CIF carried in the scheduling information received by the third downlink subframe, where the CIF carries the process ID of the uplink data, and the third downlink subframe is the second downlink subframe. After the downlink subframe of the third uplink subframe is scheduled, the third uplink subframe is in the first time period, and after the first uplink subframe, the subframe number of the first uplink subframe is different.
- the UE determines, according to the process ID, that the uplink data is sent to the base station in the third uplink subframe.
- the communications device is a base station
- the mapping relationship is a feedback relationship
- the communications device determines that the current subframe belongs to the The first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period, and includes:
- the base station Determining, by the base station, that the current subframe is a first uplink subframe, where the first subframe is a second downlink subframe where the feedback information corresponding to the first uplink subframe is located, and the second downlink subframe It is one downlink subframe in the second time period.
- the method further includes:
- the base station After the base station correctly receives the uplink data in the first uplink subframe, the base station determines that the feedback information is not sent to the UE in the second downlink subframe.
- the method further includes:
- the base station does not correctly receive the uplink data in the first uplink subframe, and the base station determines to send scheduling information in a third downlink subframe, where the scheduling information is used to schedule a third uplink subframe, where
- the scheduling information carries a CIF, and the CIF carries the process ID of the uplink data.
- the communication device is a UE or a base station.
- An embodiment of the present invention provides a method and apparatus for determining data transmission. If the communication device determines that the current subframe belongs to the first time period, the communication device determines data transmission of the current subframe, where the first time period is The time period of the secondary carrier scheduling, that is, the time period in which the frequency resource is available, the communication device can perform normal data transmission by determining the subframes in the time period in which the frequency resource is available, thereby ensuring normal communication between the base station and the UE, and further The communication efficiency between the base station and the UE is improved.
- FIG. 1 is a schematic diagram 1 of a subframe structure provided by the prior art
- FIG. 2 is a schematic structural diagram 1 of a communication device according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram 2 of a communication device according to an embodiment of the present invention
- FIG. 4 is a schematic structural diagram 3 of a communication device according to an embodiment of the present invention
- FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present invention
- FIG. 7 is a schematic structural diagram 6 of a communication device according to an embodiment of the present invention
- FIG. 8 is a flowchart 1 of a method for determining data transmission according to an embodiment of the present invention
- FIG. 9 is a schematic diagram 2 of a subframe structure according to an embodiment of the present invention
- FIG. 10 is a flowchart of a method for determining data transmission according to an embodiment of the present invention
- FIG. 11 is a flowchart 3 of a method for determining data transmission according to an embodiment of the present invention
- FIG. 12 is a subframe structure according to an embodiment of the present invention; Schematic three;
- FIG. 13 is a flowchart of a method for determining data transmission according to an embodiment of the present invention
- FIG. 14 is a flowchart of a method for determining data transmission according to an embodiment of the present invention
- FIG. Figure 6 is a flowchart of a method according to an embodiment of the present invention
- FIG. 17 is a flowchart 7 of a method for determining data transmission according to an embodiment of the present invention. detailed description
- GSM Global System for Mobile Communications
- CDMA code Code Division Multiple Access
- TDMA time division multiple access
- WCDMA wideband code division multiple access
- FDMA frequency division multiple access
- OFDMA Orthogonal Frequency Division Multiple Access
- SC-FDMA single carrier FDMA
- GPRS general packet radio service
- LTE long-term evolution
- LTE long term evolution
- the UE User Equipment
- the UE may be a wireless terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, and has wireless connection work.
- the wireless terminal can communicate with one or more core networks via a radio access network (e.g., RAN, radio access network), which can be a mobile terminal, such as a mobile telephone (or "cellular" telephone) and having a mobile terminal
- RAN radio access network
- the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
- PCS personal communication service
- IP session initiation protocol
- WLL wireless local loop
- PDA personal digital assistant
- a wireless terminal may also be called a system, subscriber unit (unicast unit), subscriber station, mobile station, mobile, remote station, access point. , remote terminal, access terminal, user terminal user agent, user device (user dev i ce ).
- the base station may be an eNB (evolved Node B, an evolved base station), an RNC (Radio Network Controller), or a BSC (Base Stating Controller), that is, an access network device.
- eNB evolved Node B
- RNC Radio Network Controller
- BSC Base Stating Controller
- the PS (Packet Switch) domain of the mobile communication system is taken as an example.
- the base station is an RNC; in 4G (4th Generation, 4th generation mobile communication technology), the base station is an eNB; In 2rd Generation, the second generation mobile communication technology, the base station is a BSC.
- the base station is RNC (3G) / BSC (2G).
- the LTE-TDD system can support different uplink-downlink ratios (representing the ratio of uplink subframes to downlink subframes in a TDD frame), and corresponding to different uplink-downlink ratios, the base station can set different scheduling information corresponding to the uplink data.
- the base station closes the timing of the scheduling information with the downlink subframe used for transmitting the scheduling information according to the timing relationship of the set scheduling information.
- the frame is an uplink subframe, and the 0th subframe, the 1st subframe, the 4th subframe, the 5th subframe, the 6th subframe, and the 9th subframe are downlink subframes.
- the base station sends the scheduling information of the first subframe 7 in the first subframe 1 and transmits the scheduling information of the first subframe 8 in the first subframe 4 to the UE.
- the UE sends uplink data to the base station in the first number subframe and the first subframe 8 according to the scheduling information, and the base station sends feedback information in the second subframe 1 and in the second
- the subframe 4 transmits feedback information to the UE, and the UE determines, according to the feedback information, whether to retransmit the uplink data to the base station in the second subframe 7 and the second subframe 8 respectively.
- the second subframe No. 1 feedback base station does not correctly receive the uplink data sent by the UE in the first subframe No. 7, and the feedback information is NACK
- the second subframe No. 4 feedback base station The uplink data sent by the UE in the first subframe 8 is correctly received, and the feedback information is ACK.
- K in FIG. 1 is the timing advance of two subframes that satisfy the mapping relationship.
- the mapping relationship is a scheduling relationship
- the base station transmits the scheduling information of the first subframe 7 in the first subframe 1 through the PDCC H.
- an embodiment of the present invention provides a communication device 1, and the communication device 1 may include:
- the determining unit 10 is configured to determine that the current subframe belongs to the first time period, where the first time segment is a time period scheduled by the secondary carrier; and determine data transmission of the current subframe.
- the determining unit 10 is specifically configured to determine that the current subframe belongs to the first time period, and the first subframe that satisfies a preset mapping relationship with the current subframe The frame belongs to the second time period, and the second time period is a time period in which the secondary carrier stops scheduling.
- the communication device 1 further includes an obtaining unit 11.
- the obtaining unit 11 is configured to determine, by the determining unit 10, that the current subframe belongs to the first time period, and that the first subframe that meets a preset mapping relationship with the current subframe belongs to the second Before the time period, obtain the first uplink and downlink ratio.
- mapping relationship is a scheduling relationship.
- the determining unit 10 is configured to determine, according to the first uplink and downlink ratio that the acquiring unit 11 obtains, that the current subframe is a first uplink subframe, where the first subframe is the first subframe Determining, by the uplink subframe, the first downlink subframe that is in the scheduling relationship, and determining, according to the first time period and the second time period acquired by the acquiring unit 11, that the first uplink subframe is An uplink subframe in the first time period, where the first downlink subframe is one downlink subframe in the second time period, and determining to transmit downlink data in the first uplink subframe.
- the communication device 1 further includes a setting unit 12.
- the determining unit 10 is specifically configured to determine that the current subframe is the first subframe of the first time period.
- the setting unit 12 is configured to set a subframe number of the first subframe determined by the determining unit 10 to a second subframe number, where the second subframe number is used to represent the first subframe
- the subframe or the first subframe that satisfies a preset mapping relationship with the first subframe belongs to the first time period.
- the determining unit 10 is specifically configured to determine data transmission of the first subframe according to the second subframe number set by the setting unit 12.
- the communication device 1 further includes an obtaining unit 11.
- the obtaining unit 11 is configured to obtain a second uplink and downlink ratio before the determining unit 10 determines data transmission of the current subframe.
- the determining unit 10 is configured to determine, according to the second subframe number set by the setting unit 12 and the second uplink and downlink ratio obtained by the acquiring unit 11, determining the first subframe. data transmission.
- the communication device 1 further includes an obtaining unit 11.
- the obtaining unit 11 is configured to obtain the second uplink and downlink ratio before the determining unit 10 determines the data transmission of the current subframe.
- the determining unit 10 is specifically configured to determine that the current subframe is the first subframe of the first time period, and determine according to the second uplink and downlink ratio obtained by the acquiring unit 11 Data transmission of the first subframe.
- the communication device is a UE
- the mapping relationship is a feedback relationship
- the determining unit 10 is specifically configured to: according to the first time period and the second time period acquired by the acquiring unit 11, Determining that the first uplink subframe is one uplink subframe in the first time period, and the second downlink subframe is one downlink subframe in the second time segment.
- the transmitting unit 13 is further included.
- the sending unit 13 is configured to send uplink data to the base station in the first uplink subframe determined by the determining unit 10, and store the uplink data in a transmission buffer.
- the determining unit 10 is further configured to determine that the base station correctly receives the uplink data sent by the sending unit 13.
- the determining unit 10 is further configured to determine, after the base station does not correctly receive the uplink data sent by the sending unit 13, determine a CIF carried in the scheduling information received in the third downlink subframe, where The process ID of the CIF carrying the uplink data, and determining, according to the process ID, that the sending unit 13 sends the uplink data to the base station in a third uplink subframe, where the third downlink subframe is Dispatching a downlink subframe of the third uplink subframe after the second downlink subframe, where the third uplink subframe is in the first time segment, after the first uplink subframe, and the first The one subframe in which the subframe number of the uplink subframe has the smallest difference.
- the communication device 1 is a base station, and the mapping relationship is a feedback relationship.
- the determining unit 10 is specifically configured to determine that the current subframe is a first uplink subframe, where the first subframe is a part of the feedback information corresponding to the first uplink subframe.
- the second downlink subframe is the downlink subframe in the second time period.
- the receiving unit 14 is further included.
- the determining unit 10 is further configured to: after the first uplink subframe correctly receives the uplink data, determine, by the receiving unit 14, that the second downlink subframe does not send feedback information to the UE.
- the determining unit 10 is further configured to: the receiving unit 14 does not correctly receive the uplink data in the first uplink subframe, and determines that the sending unit 13 sends scheduling information in a third downlink subframe, The scheduling information is used to schedule a third uplink subframe, where the scheduling information carries a CIF, and the CIF carries the process ID of the uplink data.
- the communication device 1 is a UE or a base station.
- An embodiment of the present invention provides a communication device, if the communication device determines that the current subframe belongs to the first time period, the communication device determines data transmission of the current subframe, where the first time period is a secondary carrier scheduling.
- the time period that is, the time period in which the frequency resource is available, the communication device can perform normal data transmission by determining the subframes in the time period in which the frequency resource is available, thereby ensuring normal communication between the base station and the UE, thereby improving the base station and the base station. Communication efficiency between UEs.
- an embodiment of the present invention provides a communication device, including: a transmitter 15, a receiver 16, a processor 17, and a memory 18, wherein the transmitter 15, the receiver 16, and the memory 18 are both coupled to the processor. 17 Connections, for example, the transmitter 15, the receiver 16 and the memory 18 may each be connected to the processor 17 via a bus.
- Receiver 16 and transmitter 15 can be integrated to form a transceiver.
- the memory 18 is for storing executable program code including computer operating instructions.
- Memory 18 may include high speed RAM memory and may also include non-volatile memory, such as at least one disk memory.
- the processor 17 can be a central processing unit, or a specific integrated circuit, or One or more integrated circuits are configured to implement embodiments of the present invention.
- the processor 17 may be configured to determine that the current subframe belongs to the first time period, where the first time period is a time period scheduled by the secondary carrier, and determining data transmission of the current subframe; 1 5 can be used to transmit data; the receiver 16 can be used to receive data; the memory 18 can be used to store time-slot information software code of the secondary carrier scheduling and a software program for controlling the communication device to complete the above process, thereby The processor 17 completes the above process by executing the above software program and calling the above software code.
- the processor is configured to determine that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time.
- the second time period is a time period in which the secondary carrier stops scheduling.
- the processor 1 7 is further configured to: when determining that the current subframe belongs to the first time period, and the first subframe that meets a preset mapping relationship with the current subframe belongs to the Before the second time period, the preset first uplink and downlink ratio is obtained.
- mapping relationship is a scheduling relationship.
- the processor 17 is configured to determine, according to the first uplink and downlink ratio, that the current subframe is a first uplink subframe, where the first subframe is satisfied with the first uplink subframe. a first downlink subframe of the scheduling relationship, and determining, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time period, where The first downlink subframe is one downlink subframe in the second time period, and determines that downlink data is transmitted in the first uplink subframe.
- the processor 17 is configured to determine that the current subframe is the first subframe of the first time period, and set the subframe number of the first subframe to a preset a second sub-frame number, where the second sub-frame number is used to represent the first sub-frame or the first sub-frame that satisfies a preset mapping relationship with the first sub-frame belongs to the first a time period, and determining a data transmission of the first subframe according to the second subframe number.
- the processor 1 7 is further configured to obtain a second uplink and downlink ratio before determining data transmission of the current subframe.
- the processor 17 is specifically configured to determine data transmission of the first subframe according to the second subframe number and the second uplink and downlink ratio.
- the processor 17 is further configured to: before determining data transmission of the current subframe, acquire a second uplink and downlink ratio, and determine that the current subframe is the first time period. a first subframe, and determining a data transmission of the first subframe according to the second uplink-downlink ratio.
- the communication device is the UE, and the mapping relationship is a feedback relationship.
- the processor 17 is configured to determine, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the second The downlink subframe is one downlink subframe in the second time period.
- the transmitter 15 is further configured to send uplink data to the base station in the first uplink subframe determined by the processor 17, and store the uplink data in a transmission. In the cache.
- the processor 17 is further configured to determine that the base station correctly receives the uplink data sent by the transmitter 15.
- the communication device is a UE.
- the processor 17 is further configured to: after determining that the base station does not correctly receive the uplink data, determine a carrier indication domain CIF that is carried in the scheduling information received by the third downlink subframe, where the CIF carries the uplink data.
- the process ID and determining, according to the process ID, that the sending 15 sends the uplink data to the base station in the first uplink subframe, where the third downlink subframe is the second downlink subframe Scheduling a downlink subframe of the third uplink subframe, where the third uplink subframe is the subframe number of the first uplink subframe after the first uplink subframe, and the subframe number of the first uplink subframe One of the uplink subframes with the smallest difference.
- the communication device is a base station, and the mapping relationship is a feedback relationship.
- the processor 17 is configured to determine that the current subframe is a first uplink subframe, where the first subframe is a second downlink subframe where the feedback information corresponding to the first uplink subframe is located, where The second downlink subframe is one of the downlink segments in the second time period frame.
- the processor 17 is further configured to: after the receiver 16 correctly receives the uplink data in the first uplink subframe, determine, in the second downlink The subframe does not send feedback information to the UE.
- the processor 17 is further configured to: the receiver 16 does not correctly receive the uplink data in the first uplink subframe, and determine that the transmitter 15 sends scheduling information in a third downlink subframe, The scheduling information is used to schedule a third uplink subframe, where the scheduling information carries a CIF, and the CIF carries the process ID of the uplink data.
- the communication device is a UE or a base station.
- An embodiment of the present invention provides a communication device, if the communication device determines that the current subframe belongs to the first time period, the communication device determines data transmission of the current subframe, where the first time period is a secondary carrier scheduling.
- the time period that is, the time period in which the frequency resource is available, the communication device can perform normal data transmission by determining the subframes in the time period in which the frequency resource is available, thereby ensuring normal communication between the base station and the UE, thereby improving the base station and the base station. Communication efficiency between UEs.
- An embodiment of the present invention provides a method for determining data transmission. As shown in FIG. 8, the method may include:
- the communications device determines that the current subframe belongs to the first time period, where the first time period is a time period scheduled by the secondary carrier.
- LTE-A Long Term Evoluting-Advanced; Advanced Long Term Evolution
- 3GPP LTE The 3rd Generation Partnership Project Long Term Evolution
- CA Carrier Aggregation
- the spectrums of two or more component carriers are aggregated together to obtain a wider transmission bandwidth.
- the spectrum of each component carrier may be an adjacent continuous spectrum or may be in the same frequency band. Non-adjacent spectrum Even discontinuous spectrum in different frequency bands.
- the user equipment of LTE-A can simultaneously access multiple component carriers for data transmission and reception according to its capabilities and service requirements.
- the existing CA system is a carrier that is aggregated by the same base station, or a macro cell with an ideal backhaul and a carrier aggregation under the micro cell.
- the macro cell and the micro cell are connected through a fiber (the micro cell may also be a radio frequency head).
- the information base station carried on the multiple component carriers can be obtained in time, and the base station can perform joint scheduling on multiple component carriers.
- the method for determining data transmission is a process for data transmission between a base station and a UE on a secondary carrier, and the method may be applied to data transmission in any one secondary carrier.
- the invention is not limited.
- a base station may configure one primary carrier and at least one secondary carrier for the UE, and perform data transmission by using the primary carrier and the at least one secondary carrier.
- an LTE carrier is deployed on an unlicensed spectrum, and the LTE carrier is used as a secondary carrier in the method for determining data transmission provided by the present invention.
- the non-authorized spectrum refers to the common spectrum, and is not a dedicated carrier for data transmission by a base station. Therefore, the frequency resources used by the base station and the UE for data transmission on the secondary carrier may not be continuous, different.
- the base stations need to compete with each other for a period of time during which data can be transmitted on the secondary carrier.
- one frame is composed of 10 subframes
- the middle subframe of 10 subframes is an uplink subframe
- some subframes are downlink subframes.
- the FDD-LTE (Frequency Division Duplexing Long Term Evolution) system one uplink radio frame is composed of 10 uplink subframes
- one downlink radio frame is composed of 10 downlink subframes.
- the FDD-LTE system is separate from the upstream and downstream, using different frequencies.
- the base station sends a downlink channel on the downlink subframe or the special subframe to transmit data to the UE, and the UE sends the uplink channel on the uplink subframe or the special subframe to transmit Data is transmitted to the base station.
- the subframe number of 10 subframes of a TDD frame is j, j is an integer ranging from 0 to 9, and when j + 1 is greater than 9, the subframe j + 1
- the subframe number is ( j + 1 ) mod 10; and when j_l is less than 0, the subframe j_l is the subframe number (j_l) mod 10.
- the subframes of each frame are numbered 0-9, that is, the subframe number of each frame is 0-9.
- uplink and downlink ratios there may be 7 kinds of uplink and downlink ratios, one subframe is 1 millisecond, one frame has 10 milliseconds, and 5 milliseconds is periodic, and there are three uplink and downlink.
- the communication device determines that the current subframe belongs to the first time period, and before the first time period is the time period of the secondary carrier scheduling, the communications device determines time zone information of the secondary carrier scheduling, where the secondary carrier is the communication device communication.
- the secondary carrier, the time period information of the secondary carrier scheduling includes the first time period of the secondary carrier scheduling.
- the method for determining data transmission is mainly applied to a TDD-LTE system, where a communication device determines time zone information of a secondary carrier scheduling, where the secondary carrier is a secondary carrier when the communication device communicates, and the time of the secondary carrier scheduling
- the segment information includes a first time period of the secondary carrier scheduling.
- the communication device in the embodiment of the present invention may be a UE or a base station.
- the base station notifies the UE of at least one of the start and stop time points of the secondary carrier scheduling and the start and stop time points of the secondary carrier stop scheduling, and the UE may be based on the start and stop time points of the secondary carrier scheduling and the secondary carrier. At least one of the start and stop time points of the scheduling is stopped, and the time period information of the secondary carrier scheduling is determined, and the time period information of the secondary carrier scheduling includes the first time period of the secondary carrier scheduling.
- the base station can determine the time period information of the secondary carrier scheduling by itself.
- the base station notifies the starting and ending time points of the secondary carrier scheduling of the UE and the auxiliary
- the method for transmitting at least one of the start and stop time points of the carrier stop scheduling may be that the base station sends a notification message to the UE by using the primary carrier or another secondary carrier, where the notification message is sent by: PDCCH notification or media access control MAC ( (Media Access Control, Media Access Control) Layer notification.
- PDCCH notification or media access control MAC (Media Access Control, Media Access Control) Layer notification.
- the base station may send a notification message to the UE through the PDCCH, where the notification message carries the start and end time of the secondary carrier to stop scheduling.
- the subframe 1 in the time period in which the frequency resource is unavailable is the secondary carrier.
- the starting time point of stopping the scheduling, the subframe 5 is the termination time point of the scheduling of the secondary carrier, and the time period from the subframe 1 to the subframe 5 is the second time period, and the second time period is not available.
- the time period of the scheduling the time period outside the second time period in the time zone in which the secondary carrier is located is the first time period, that is, the time period in which the frequency resource is unavailable is the time period in which the frequency resource is available.
- the communication device may determine that the current subframe belongs to the first time period.
- the first time period is a time period in which the frequency resource is available, and the communication device can perform data transmission within a time period in which the frequency resource is available.
- the first time period is a time period in which frequency resources are available.
- the communication device determines data transmission of the current subframe.
- the communication device After the communication device determines that the current subframe belongs to the first time period, the communication device determines the data transmission of the current subframe.
- uplink data can be transmitted, and downlink subframes can transmit downlink data.
- the communication device determines that the current subframe belonging to the first time period can perform normal data transmission, so that the first time period belongs to Subframes can make full use of frequency resources for data transmission. Specifically, the method by which the communication device determines the data transmission of the current subframe will be described in detail later in the embodiment.
- S101 specifically includes: S1011-S1013, S102 specifically includes: S1021-S1022, as follows: SI 0 1 1.
- the communication device determines that the current subframe is the first subframe of the first time period.
- the communication device determines that the current subframe is the first subframe of the first time period.
- the communications device determines, according to the time period information of the secondary carrier scheduling, that the current subframe is the first subframe of the first time period.
- the subframe 1 is the first subframe in the first time period.
- the communication device sets the subframe number of the first subframe to a preset second subframe number, where the second subframe number is used to represent the first subframe or the first subframe
- the first subframe in which the subframe satisfies the preset mapping relationship belongs to the first time period.
- the communications device After the communication device determines that the current subframe is the first subframe of the first time period, the communications device sets the subframe number of the first subframe to a preset second subframe number, where the second subframe number is used.
- the first subframe that characterizes the first subframe or that satisfies a preset mapping relationship with the first subframe belongs to the first time period.
- the second subframe number in the embodiment of the present invention may be a preset subframe number in the communication device, or a subframe number obtained by the communication device when the subframe number is set, and a specific setting manner.
- the invention is not limited.
- the communication device may determine that the current subframe is the No. 8 subframe, that is, after the communication device determines that the current subframe is the first subframe of the first time period, the subframe number of the current subframe is set to the second subframe. frame.
- the second subframe number is set so that each subframe from the first subframe of the first time period can be utilized, so that the frequency resource is utilized reasonably. Therefore, the second subframe number is used.
- the first subframe used to represent the first subframe or satisfy a preset mapping relationship with the first subframe belongs to the first time period.
- the subframe number of the first subframe of the first time period is set to the second subframe number
- the subframe number of the subframe subsequent to the first subframe number also changes correspondingly, which is caused by the subframe. Numbered software implemented.
- the communication device acquires the second uplink-down ratio.
- the communication device After the communication device determines that the current subframe is the first subframe of the first time period, the communication device acquires the second uplink and downlink ratio.
- the second uplink and downlink ratio in the embodiment of the present invention may be in a communications device.
- the pre-defined uplink-downlink ratio can also be the uplink-downlink ratio obtained by the communication device.
- the specific setting manner is not limited in the present invention.
- the base station learns a preset or pre-configured second uplink-downlink ratio; when the communication device is a UE, the base station sends a notification message to the UE, and informs the UE of the second uplink-downlink ratio.
- the notification message is sent in the following manner:
- the MAC layer notification is controlled by the PDCCH notification or by media access.
- S1012 and S1013 can be two optional steps after S1011, that is, after SI 011, S1012 can be executed, or S1013 can be executed.
- the S102 communication device determines the data transmission of the first subframe according to the second subframe number.
- the communication device After the communication device sets the subframe number of the first subframe to the second subframe number, the communication device determines the data transmission of the first subframe according to the second subframe number.
- the second subframe number is used to identify data transmission information of the current subframe, where the second subframe number is preset, the data transmission information is used to represent a direction of data transmission, and the communication device may be according to the second The data transmission information identified by the subframe number determines the data transmission of the current subframe.
- the communications device determines that the first subframe transmits downlink data.
- the communications device determines data transmission of the first subframe according to the second uplink-downlink ratio.
- the communication device After the communication device acquires the second uplink-downlink ratio, the communication device determines the data transmission of the first subframe according to the second uplink and downlink ratio.
- the second uplink and downlink ratio can know the type of the subframe number and the subframe transmission data. Therefore, the communication device can determine the data transmission of the current subframe according to the new second uplink-downlink ratio.
- S1021 is a step subsequent to S1012, and S1022 is a step subsequent to S1013.
- the embodiment of the present invention does not limit the execution order of S1012 and S1013, that is, the embodiment of the present invention may first execute S1012, and then execute S1013; It is also possible to execute S1013 first and then S1012; S1012 and S1013 can also be executed at the same time.
- S 1021 and S 1022 as shown in FIG. 11 may specifically be S 1023:
- the communications device determines data transmission of the first subframe according to the second subframe number and the second uplink and downlink ratio.
- the communication device sets the subframe number of the current subframe to the second subframe number, and after the communication device acquires the second uplink and downlink ratio, the communication device determines the first according to the second subframe number and the second uplink and downlink ratio. Data transmission of one subframe.
- the communication device may not enable the current subframe to perform data transmission only by changing the subframe number of the current subframe or by merely changing the current uplink-downlink ratio.
- the communication device can combine the subframe number of the current subframe and change the current uplink and downlink ratio, so that the current subframe can perform data transmission, thereby achieving reasonable utilization of the frequency resource.
- the frame is the first subframe of the first time period, that is, the first subframe 7, and the first subframe 7 is the uplink subframe, because the subframe 4 of the first subframe 7 is scheduled.
- the first subframe 7 cannot transmit the uplink data.
- the communication device sets the subframe number of the first subframe 7 to 8, and sets the current uplink and downlink ratio to 4:1, and the communication device can schedule subframe 2 on the subframe 8, that is, communication.
- the device determines that the sub-frame No. 8 of the current subframe transmits downlink data.
- an embodiment of the present invention further provides a method for determining data transmission, where the method includes: S201-S204.
- the communication device determines time zone information of the secondary carrier scheduling, where the secondary carrier is a secondary carrier when the communication device communicates, and the time period information of the secondary carrier scheduling includes the first time period of the secondary carrier scheduling.
- the communication device acquires a preset first uplink and downlink ratio.
- the communication device determines data transmission of each subframe according to the preset first uplink-downlink ratio.
- the first uplink-downlink ratio is known by the base station; when the communication device is a UE, the first uplink-downlink ratio is notified to the UE by the base station.
- the first uplink-downlink ratio in the embodiment of the present invention is a preset uplink-downlink ratio when the base station and the UE communicate.
- S201 may be executed first, then S202 may be executed, or S202 may be executed first, and then S201 is executed.
- the communications device determines that the current subframe belongs to the first time period, and the first subframe that meets the preset mapping relationship with the current subframe belongs to the second time period.
- the communication device determines that the current subframe belongs to the first time period, and the first subframe that satisfies the preset mapping relationship with the current subframe belongs to the second time period.
- the preset mapping relationship in the embodiment of the present invention may be a scheduling relationship or a feedback relationship.
- the wireless signal needs some time to transmit from the base station to the UE, and the UE needs some time to prepare to transmit the uplink data, and the transmission of the uplink data must be sent earlier than the reception at the intended base station. Therefore, in 3GPP LTE, the scheduling of the transmission of the upcoming uplink data must be transmitted at the latest in a subframe that is 4 subframes ahead of the transmission of the expected base station, that is, when the communication device transmits the uplink data in the uplink subframe, the communication device After scheduling the downlink subframe of the uplink subframe to send the scheduling information in advance, the communication device can transmit the uplink data in the uplink subframe.
- the base station transmitting uplink data must be transmitted in the uplink subframe No. 7, and the corresponding scheduling is sent from the base station in the downlink subframe No. 3. If subframe 3 is an uplink subframe, the corresponding schedule must be sent in advance.
- the communication device determines the data transmission of the current subframe.
- the process of determining the data transmission of the current subframe and the related description may be referred to the steps of S 1 02 and the description thereof in the embodiment of the present invention, and details are not described herein again.
- S 2 0 3 specifically includes: S 2 0 31
- S 2 04 specifically includes: S 2 04 1 , as follows:
- the communications device determines that the current subframe is the first uplink subframe according to the first uplink-downlink ratio, and the first subframe is the first that satisfies the scheduling relationship with the first uplink subframe. a downlink subframe, and determining, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the first downlink subframe is the second time segment One of the downlink subframes.
- the communications device After the communication device obtains the first uplink-downlink ratio, when the mapping relationship is the scheduling relationship, the communications device determines, according to the first uplink-downlink ratio, that the current subframe is the first uplink subframe, and the first subframe is the first uplink.
- the first downlink subframe that satisfies the scheduling relationship of the subframe, and determines that the first uplink subframe is an uplink subframe in the first time segment according to the first time period and the second time period, where the first downlink is The subframe is one downlink subframe in the second time period.
- the base station determines, according to the first uplink-downlink ratio and the first time period, that the first subframe 7 is the first uplink subframe in the first time period, and the base station determines, according to the first uplink-downlink ratio, that the first one is scheduled.
- the first downlink subframe of the subframe 7 is the subframe 1 before the first subframe No. 7, and the base station determines, according to the second time period, that the subframe 1 belongs to the second time period.
- the S 2 04 communication device determines to transmit downlink data in the first uplink subframe.
- the communications device determines that the current subframe is the first uplink subframe according to the first uplink and downlink ratio, and the first subframe is the first downlink subframe that satisfies the scheduling relationship with the first uplink subframe. And determining, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the first downlink subframe is one downlink in the second time segment After the subframe, the communication device determines to transmit downlink data in the first uplink subframe.
- the second time period is a time period in which the frequency resource is unavailable, and therefore, the communications device is in the first downlink.
- the frame cannot schedule the first uplink subframe, so that the first uplink subframe cannot transmit uplink data. Therefore, a method for determining data transmission according to the embodiment of the present invention determines that downlink data is transmitted in the first uplink subframe in the above case, thereby avoiding waste of frequency resources in the first uplink subframe.
- the communication device in the foregoing embodiment may be a base station or a UE.
- the base station and the UE are in interaction. Therefore, if the base station sends downlink data to the UE on the subframe, the UE needs to know that the subframe is to be received. Downlink data sent by the base station. Similarly, if the UE wants to send uplink data to the base station on the subframe, the base station also needs to know that the uplink data sent by the UE is to be received on the subframe.
- the foregoing S 2 03 specifically includes: S 2 0 32
- S 2 04 specifically includes: S 2 042
- the method for determining the data transmission further includes S 2 05 1 - S 2 06 1 as follows:
- the UE determines, according to the first time period and the second time period, that the first uplink subframe is an uplink subframe in the first time segment, and the second downlink subframe is One downlink subframe in the second time period.
- the UE determines, according to the first uplink and downlink ratio, that the current subframe is the first uplink subframe, and the first subframe is the first uplink.
- the second downlink subframe in which the subframe satisfies the feedback relationship And determining, according to the first time period and the second time period, that the first uplink subframe is one uplink subframe in the first time segment, and the second downlink subframe is one downlink subframe in the second time segment.
- the communication device needs to receive the uplink data in the second downlink subframe after the first uplink subframe after the uplink data is transmitted in the first uplink subframe.
- the feedback information, the second downlink subframe is a subframe that satisfies a feedback relationship with the first uplink subframe.
- the base station determines, according to the first uplink-downlink ratio and the first time period, that the first subframe 7 is the first uplink subframe in the first time period, and the base station determines the feedback according to the first uplink-downlink ratio.
- the second downlink subframe of the subframe 7 is the first subframe 1 after the first subframe 7, and the base station determines, according to the second time period, that the first subframe 1 belongs to the second time period. .
- the UE sends uplink data to the base station in the first uplink subframe, and stores the uplink data in the transmission buffer, and the UE determines that the base station correctly receives the uplink data.
- the UE determines, according to the first time period and the second time period, that the first uplink subframe is an uplink subframe in the first time segment, and the second downlink subframe is the second time segment. After one downlink subframe, the UE sends uplink data to the base station in the first uplink subframe, and stores the uplink data in the transmission buffer, and the UE determines that the base station correctly receives the uplink data.
- the communication device determines that the current subframe is the first uplink subframe that belongs to the first time period. Therefore, the UE may send uplink data to the base station in the first uplink subframe. In the embodiment of the present invention, the UE stores the uplink data in the transmission buffer, so that when the base station does not correctly receive the uplink data, the UE may retransmit the uplink data stored in the transmission buffer to the base station.
- the UE when the current subframe is fed back, that is, the second downlink of the first uplink subframe.
- the subframe belongs to the second time period in which the frequency resource is unavailable, after transmitting the uplink data to the base station, the UE stores the uplink data in the transmission buffer, and the UE determines that the base station correctly receives the uplink data, so that the UE cannot receive the uplink data.
- the base station sends the feedback information sent by the second downlink subframe, it is determined that the uplink data is correctly received by the base station, so that the UE does not have to wait for the feedback information, but performs data transmission of other processes, so that the frequency resource is obtained. designation.
- the S205 UE sends the uplink data to the base station in the first uplink subframe. If the UE determines that the base station does not correctly receive the uplink data, the UE determines the CIF (carrier indication domain) carried in the scheduling information received by the third downlink subframe, where the UE The CIF carries the process ID of the uplink data, and the third downlink subframe is a downlink subframe of the third uplink subframe after the second downlink subframe, where the third uplink subframe is the first time segment, the first After an uplink subframe, an uplink subframe that has the smallest difference from the subframe number of the first uplink subframe.
- the CIF carrier indication domain
- the method for determining data transmission may be applicable to a scenario in which the UE uplinks data.
- the UE sends uplink data to the base station in the first uplink subframe
- the UE determines that the base station is not
- the UE determines a CIF carried in a third downlink subframe that satisfies a scheduling relationship with the third uplink subframe, and determines, according to the CIF, a process number for retransmitting the uplink data, where the UE is in the third uplink.
- the UE determines a CIF carried in a third downlink subframe that satisfies a scheduling relationship with the third uplink subframe, and determines, according to the CIF, a process number for retransmitting the uplink data, where the UE is in the third uplink.
- retransmission of the uplink data is performed.
- S206 determines, according to the process ID, that the uplink data is sent to the base station in the third uplink subframe.
- the UE sends the uplink data to the base station in the first uplink subframe, and if the UE determines that the base station does not correctly receive the uplink data, the UE determines the CIF carried in the third downlink subframe that satisfies the scheduling relationship with the third uplink subframe, and according to the After the CIF determines the process number for scheduling the uplink data, the UE determines to send uplink data to the base station in the third uplink subframe according to the process ID.
- the base station does not correctly receive the uplink data. Therefore, the UE needs to retransmit the uplink data in the second subframe 2, and it can be known from 16 that the second subframe 2 belongs to the second. The time period, therefore, the UE cannot retransmit the uplink data on the second subframe 2, thereby causing the UE to retransmit the uplink data delay, which affects the communication efficiency.
- the method for determining data transmission is assumed to be the first schedulable uplink subframe belonging to the first time period after the current subframe is the second subframe 2, That is, the third uplink subframe -8 subframe, the UE determines the third downlink subframe that satisfies the scheduling relationship with the eighth, that is, the CIF carried in the subframe 4, and determines the process ID of the uplink data according to the CIF, the UE On the uplink subframe No. 8, the uplink data can be retransmitted according to the incoming number.
- the base station when the base station does not correctly receive the uplink data sent by the UE, and needs to retransmit the uplink data, it may be determined that the uplink data is retransmitted on the uplink subframe that is schedulable and the latest uplink data is sent, thereby improving the data. The efficiency of retransmission.
- the foregoing S203 specifically includes: S2033, S204 specifically includes: S2043, and after S2043, the method for determining data transmission provided by the embodiment of the present invention further includes S2052-S2062 , details as follows:
- the base station determines that the current subframe is the first uplink subframe, where the first subframe is the second downlink subframe where the feedback information corresponding to the first uplink subframe is located, and the second downlink subframe It is a downlink subframe in the second time period.
- the base station determines that the current subframe is the first uplink subframe, and the first subframe is the second downlink where the feedback information corresponding to the first uplink subframe is located. a subframe, the second downlink subframe is a downlink subframe in the second time period.
- the base station needs to send feedback on whether the uplink data is normally transmitted in the second downlink subframe after the first uplink subframe.
- the second downlink subframe is a subframe that satisfies a feedback relationship with the first uplink subframe.
- the first downlink time ratio and the first time period determine the first subframe 7 as the first time a first uplink subframe in the segment, and the base station determines, according to the first uplink-downlink ratio, that the second downlink subframe that feeds the first subframe 7 is the first one after the first subframe 7
- the subframe, the base station determines, according to the second time period, that the first subframe 1 belongs to the second time period.
- the base station determines to receive the uplink data sent by the UE in the first uplink subframe.
- the mapping relationship is a feedback relationship
- the base station determines that the current subframe is the first uplink subframe, and the first subframe is the second downlink subframe where the feedback information corresponding to the first uplink subframe is located, and the second downlink subframe is the second downlink subframe.
- the base station determines to receive the uplink data sent by the UE in the first uplink subframe.
- the base station may determine, according to the first uplink-downlink ratio, the uplink data sent by the UE in the first uplink subframe.
- the base station correctly receives uplink data in the first uplink subframe, and the base station determines that the feedback information is not sent to the UE in the second downlink subframe.
- the base station After the base station determines to receive the uplink data sent by the UE in the first uplink subframe, if the base station correctly receives the uplink data in the first uplink subframe, the base station determines that the feedback information is not sent to the UE in the second downlink subframe, to end The transmission of the uplink data.
- the base station if the base station correctly receives the uplink data in the first subframe, the UE does not need to retransmit the uplink in the uplink subframe that is the same as the subframe number of the first subframe and has the smallest difference from the first subframe. The data, then, the base station can directly end the transmission of the uplink data.
- the base station determines to send the scheduling information in the third downlink subframe, where the scheduling information is used to schedule the third uplink subframe, where the scheduling information is carried.
- CIF the process number of the CIF carrying the upstream data.
- the base station After the base station determines to receive the uplink data sent by the UE in the first uplink subframe, if the base station does not correctly receive the uplink data in the first uplink subframe, the base station determines to send scheduling information in the third downlink subframe, where the scheduling The information is used to schedule a third uplink subframe, and the process ID of the uplink data carried in the scheduling information and the sub-frame of the third uplink subframe a frame number, where the third downlink subframe is a downlink subframe of the third uplink subframe, where the third uplink subframe is in the first time segment, after the first uplink subframe, and the frame The one subframe in which the subframe number of the first uplink subframe has the smallest difference.
- the base station may determine to retransmit the uplink data in the third uplink subframe.
- S 2 05 2 and S 2 06 2 are two parallel steps after S 2 04 3 .
- S 2 04 3-S 2 052 can be executed, and S 2 can also be executed.
- 04 3-S 2 062 depending on the conditions of execution.
- An embodiment of the present invention provides a method for determining data transmission. If the communication device determines that the current subframe belongs to the first time period, the communication device determines data transmission of the current subframe, where the first time period is auxiliary.
- the time period of the carrier scheduling that is, the time period in which the frequency resource is available, the communication device can perform normal data transmission by determining the subframes in the time period in which the frequency resources are available, thereby ensuring normal communication between the base station and the UE, thereby improving The communication efficiency between the base station and the UE.
- the disclosed systems, devices, and methods may be implemented in other ways.
- the device embodiments described above are merely illustrative.
- the division of the modules or units is only a logical function division.
- there may be another division manner for example, multiple units or components may be used. Combined or can be integrated into another system, or some features can be ignored, or not executed.
- the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in electrical, mechanical or other form.
- the unit described as a separate component may or may not be physically divided
- the components displayed as the unit may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.
- the integrated unit if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium.
- the instructions include a plurality of instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the methods of the various embodiments of the present invention.
- the foregoing storage medium includes: a U disk, a removable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .
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Abstract
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JP2017505137A JP2017522828A (ja) | 2014-07-31 | 2014-07-31 | データ送信を判定するための方法および装置 |
PCT/CN2014/083490 WO2016015317A1 (zh) | 2014-07-31 | 2014-07-31 | 一种确定数据传输的方法及装置 |
CN201480080669.4A CN106576352A (zh) | 2014-07-31 | 2014-07-31 | 一种确定数据传输的方法及装置 |
EP14898889.2A EP3174355B1 (en) | 2014-07-31 | 2014-07-31 | Method and device for determining data transmission |
US15/415,242 US20170135101A1 (en) | 2014-07-31 | 2017-01-25 | Method and Apparatus for Determining Data Transmission |
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PCT/CN2014/083490 WO2016015317A1 (zh) | 2014-07-31 | 2014-07-31 | 一种确定数据传输的方法及装置 |
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US15/415,242 Continuation US20170135101A1 (en) | 2014-07-31 | 2017-01-25 | Method and Apparatus for Determining Data Transmission |
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EP3562238A4 (en) * | 2017-01-05 | 2020-01-15 | Huawei Technologies Co., Ltd. | COMMUNICATION METHOD, ACCESS NETWORK DEVICE AND SYSTEM |
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KR102138111B1 (ko) * | 2015-11-30 | 2020-07-27 | 후아웨이 테크놀러지 컴퍼니 리미티드 | 스케줄링 장치, 피스케줄링 장치, 및 자원 스케줄링 방법과 장치 |
US11304164B2 (en) * | 2016-11-18 | 2022-04-12 | Qualcomm Incorporated | Asynchronous CA handling |
JP7265488B2 (ja) * | 2017-06-16 | 2023-04-26 | 北京小米移動軟件有限公司 | Harqフィードバック方法および指示情報の送信方法、ならびに、そのユーザ機器および基地局 |
CN110913498B (zh) * | 2018-09-18 | 2021-07-06 | 维沃移动通信有限公司 | 一种随机接入方法及终端 |
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EP3174355A1 (en) | 2017-05-31 |
JP2017522828A (ja) | 2017-08-10 |
EP3174355B1 (en) | 2019-08-21 |
CN106576352A (zh) | 2017-04-19 |
US20170135101A1 (en) | 2017-05-11 |
EP3174355A4 (en) | 2017-08-30 |
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