WO2016183726A1 - Procédé de transmission de données dans un réseau tdd utilisant une technique de groupage de tti et équipement utilisateur prenant en charge une technique de groupage de tti dans un réseau tdd - Google Patents

Procédé de transmission de données dans un réseau tdd utilisant une technique de groupage de tti et équipement utilisateur prenant en charge une technique de groupage de tti dans un réseau tdd Download PDF

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WO2016183726A1
WO2016183726A1 PCT/CN2015/079064 CN2015079064W WO2016183726A1 WO 2016183726 A1 WO2016183726 A1 WO 2016183726A1 CN 2015079064 W CN2015079064 W CN 2015079064W WO 2016183726 A1 WO2016183726 A1 WO 2016183726A1
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frequency domain
subframe
domain location
frequency
indication information
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PCT/CN2015/079064
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English (en)
Chinese (zh)
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唐浩
唐臻飞
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华为技术有限公司
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Priority to PCT/CN2015/079064 priority Critical patent/WO2016183726A1/fr
Priority to CN201580072999.3A priority patent/CN107155310A/zh
Publication of WO2016183726A1 publication Critical patent/WO2016183726A1/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 the field of communications technologies, and in particular, to a method for transmitting data in a TDD network using TTI Bundling technology and a user equipment supporting TTI Bundling technology in a TDD network.
  • LTE long term evolution
  • TDD time division duplex
  • LTE FDD Frequency division duplex
  • English frequency division duplex
  • the LTE TDD system can support a total of seven different uplink-downlink subframe ratios from uplink to downlink ratio 0 to uplink and downlink ratio ratio 6, and each uplink and downlink ratio corresponds to one type of radio frame (English: frame). structure.
  • Each radio frame includes 10 subframes (English: sub frame), the subframe index may also be referred to as a subframe number, and the subframe index is cyclically numbered from 0-9, for example, the subframe index of the first subframe is 0, The subframe index of 11 subframes is 0.
  • Each subframe includes two slots (English: slot), each slot also corresponds to a slot number, and the slot number is cyclically numbered from 0-19, for example, when the subframe number is 1 corresponding to the first slot.
  • the slot number is 2, the corresponding slot number of the second slot is 3, the slot number of the first slot corresponding to the subframe number 11 is 2, and the slot number of the corresponding second slot is 3.
  • Each subframe has a corresponding subframe type, and the subframe type may be an uplink subframe, a downlink subframe, or a special subframe.
  • D indicates that the subframe is a downlink subframe
  • S indicates that the subframe is a special subframe
  • U indicates that the subframe is an uplink subframe.
  • the downlink subframe is used for downlink transmission
  • the uplink subframe is used for uplink transmission
  • the special subframe is composed of three parts, that is, downlink pilot time slot (English: downlink pilot time slot, referred to as DwPTS), protection period (English: guard period) , referred to as GP) and uplink pilot time slot (English: Uplink Pilot Time Slot, referred to as: UpPTS).
  • TTI Bundling transmission time interval bundling
  • frequency hopping English: hopping
  • TTI Bundling technology The main idea of the TTI Bundling technology is to form a plurality of different redundancy versions by encoding the data packets, and to transmit data packets of multiple different redundancy versions in consecutive multiple uplink subframes. These consecutive subframes constitute a transmission time interval bundle (English: transmission time interval bundle, or TTI Bundle for short), and transmission using TTI Bundle can be called transmission of TTI Bundle.
  • a subframe corresponds to a transmission time interval (TTI) in time length. Therefore, it can also be expressed as a TTI Bundle composed of multiple TTIs.
  • TTI_BUNDLE_SIZE The number of TTIs included in the TTI Bundle can be specified by the parameter TTI_BUNDLE_SIZE.
  • the parameter is specified as 4, that is, one TTI Bundle includes 4 TTIs.
  • the base station feeds back an ACK/NACK for the transmission of the TTI Bundle without having to feed back ACK/NACK for each TTI transmission in one TTI Bundle.
  • the next TTI Bundle can be used for retransmission.
  • the initial transmission and retransmission of the TTI Bundle of the same data packet are handled by the same hybrid automatic repeat request (HARQ) process.
  • HARQ hybrid automatic repeat request
  • a TTI Bundle is composed of 4 consecutive uplink subframes.
  • consecutive uplink subframes do not represent that these uplink subframes are contiguous in time. For example, in the uplink and downlink ratio 0 of Table 1, subframes 2, 3, 4, and 7 are consecutive uplink subframes, but subframe 4 and subframe 7 are discontinuous in time.
  • the frequency domain resources can be divided into different resource blocks (English: resource block, RB for short), so each RB corresponds to a frequency domain location, that is, RB can be used. Number to express the frequency domain location.
  • the RB can also be referred to as a physical resource block (English: physical resource block, PRB for short), so the frequency domain location can be represented by the number of the PRB.
  • the uplink bandwidth generally refers to the frequency domain size of time-frequency resources used for uplink transmission, and can be expressed by the number of RBs included in the frequency domain.
  • the uplink bandwidth is 50 RBs.
  • some RBs are used for PUCCH transmission, and another part of RBs are used for PUSCH transmission.
  • the number of RBs used for PUSCH transmission is called hopping bandwidth, that is, uplink data transmission can be used for PUSCH. Frequency hopping between transmitted RBs.
  • there are two types of frequency hopping one is type one (English: type1), and the other is type two (English: type2).
  • Type1 frequency hopping is to cyclically offset several RBs in the high frequency direction on the basis of the original RB, that is, to achieve frequency hopping in the original frequency domain position to the target frequency domain position.
  • Type 2 frequency hopping is to divide the frequency domain resources used for PUSCH transmission into multiple subbands of equal bandwidth (English: subband), and cyclically offset several subbands based on the original RB.
  • Each subband includes a plurality of consecutive RBs, and the number of RBs included in the subband may be configured by a base station.
  • the Type 2 frequency hopping also supports the mirroring function, which is used to perform mirror mapping on the frequency domain based on the center position of the subband based on the cyclic offset of several subbands. Get the frequency domain location after mirroring.
  • the embodiment of the invention provides a method for transmitting data in a TDD network using TTI Bundling technology and a user equipment supporting TTI Bundling technology in a TDD network for implementing frequency hopping of a TTI Bundle in a TDD network.
  • the embodiment of the present invention provides a method for transmitting data in a TDD network of a TTI Bundling technology, including: determining, by a user equipment, a frequency domain location of a time-frequency resource corresponding to a subframe; wherein the one subframe belongs to a frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI Bundle is the same as the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI Bundle, where the first sub- The frequency domain location of the time-frequency resource corresponding to the frame is associated with a current transmission number of the TTI Bundle or a slot number of a time slot corresponding to the first subframe; the user The device sends data to the base station by using the time-frequency resource corresponding to the one subframe.
  • the frequency domain location may be represented by the number of the PRB, and the time-frequency resource corresponding to one subframe includes a pair of RBs in the time domain.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is related to a current number of transmissions of the TTI Bundle
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is a first frequency domain location, and when the current transmission frequency is an odd number, the number of current transmissions is an odd number.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location; or, when the current transmission number is an even number, the first subframe corresponds to The frequency domain location of the time-frequency resource is a second frequency domain location, and when the current number of transmissions is an odd number, the frequency domain location of the time-frequency resource corresponding to the first subframe is A frequency domain location.
  • the current number of transmissions of the TTI Bundle is the same as the number of times the TTI Bundle is transmitted by the TTI Bundle.
  • the initial value of the TTI Bundle can be 0. It can be 1.
  • the embodiment of the present invention is not limited. For example, the current number of transmissions of the TTI Bundle is 2, indicating that the packet has been initially transmitted in the TTI Bundle mode. There has also been a retransmission using the TTI Bundle method.
  • the first frequency domain location is indicated by the base station; the second frequency domain location satisfies a first formula, The first formula is: or, or, among them, n PRB is the second frequency domain location,
  • the number of resource blocks (English: resource block, RB for short) in the frequency domain of the physical uplink shared channel (PUSCH).
  • the number of RBs occupied in the frequency domain by the physical uplink control channel (English: PUCCH).
  • the method further includes: the user equipment receiving first indication information and second indication information from the base station, where An indication information is used to indicate the first frequency domain location, and the second indication information is used to indicate the first formula.
  • the manner in which the second indication information indicates the first formula may be various.
  • the foregoing three formulas may be configured in the user equipment, and the foregoing formula is indicated in the second indication information.
  • the number can be used to indicate the first formula by the second indication information.
  • the method further includes: the user equipment receiving third indication information from the base station, The third indication information is used to indicate that the frequency hopping mode is type one type1.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is corresponding to the first subframe
  • the slot number of one time slot is associated; wherein the frequency domain position of the time-frequency resource corresponding to the first subframe satisfies a second formula, and the second formula is among them
  • n PRB is the frequency domain position of the time-frequency resource corresponding to the first subframe
  • N sb is the number of sub-bands (English: subband)
  • n VRB is a virtual frequency domain location
  • the number of RBs occupied by the PUCCH in the frequency domain, or n s is the slot number of the first subframe
  • N TX is the current number of transmissions of the TTI Bundle
  • f hop (i) is the subband offset corresponding to the first subframe
  • f m (i) is a mirror value corresponding to the first subframe.
  • the method further includes: the user equipment receives fourth indication information from the base station, where the fourth indication information is used Indicates the virtual frequency domain location.
  • the method further includes: the user equipment receives, from the base station, fifth indication information, the fifth The indication information is used to indicate the number of the sub-bands.
  • the method further includes: the user equipment receives sixth indication information from the base station, The sixth indication information is used to indicate that the frequency hopping mode is type 2 (English: type 2).
  • the method further includes: the user equipment receiving the seventh indication information from the base station
  • the seventh indication information is used to indicate an inter-bundle hopping of the transmission time interval.
  • the one subframe is the first subframe.
  • the user equipment determines the frequency domain position of the one subframe, that is, determines the frequency domain location of the first subframe.
  • the embodiment of the present invention provides another method for transmitting data in a TDD network using a TTI Bundling technology, including: determining, by a user equipment, a frequency domain location of a time-frequency resource corresponding to a subframe; wherein the one sub- The frame belongs to a transmission time interval group (TTI Group for short), and the one TTI group belongs to a transmission time interval packet TTI Bundle, and the frequency domain location and location of the time-frequency resource corresponding to the one subframe The frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI group is the same; the user equipment sends data to the base station by using the time-frequency resource corresponding to the one subframe.
  • TTI Group transmission time interval group
  • TTI Bundle a transmission time interval packet TTI Bundle
  • one TTI Bundling may be divided into multiple TTI Groups, that is, one TTI Bundling is composed of multiple TTI Groups.
  • a TTI Group consists of one or more subframes.
  • There are several ways to divide a TTIGroup One way is to group consecutive subframes in the time domain to form a TTI Group. The other way is to determine how many subframes are included in a TTI Group according to a value. This value can be configured by the base station.
  • one TTI Bundle includes four subframes, and the base station can configure the size of the TTI Group to be two.
  • the first two subframes of the TTI Bundle are classified into one TTI Group, and the latter two subframes are classified into another TTI Group.
  • frequency hopping can be implemented in one TTI Bundle, that is, different frequency domain resources are used for data transmission in one TTI Bundle.
  • the one TTI Bundle includes multiple TTI Groups, and the number of subframes in the multiple TTI Groups is the same.
  • the method further includes: the user equipment receiving, from the base station, eighth indication information, where the eighth indication information is used Indicates the number of the subframes.
  • the one TTI Bundle includes multiple TTI Groups; the multiple TTI Groups are discontinuous in a time domain; Each TTI Group in the TTI Group, when multiple subframes are included, the multiple subframes are in the time domain It is continuous.
  • the first subframe corresponding to the time-frequency resource The frequency domain location is associated with the sequence number of the TTI group to which the first subframe belongs; wherein, when the sequence number of the TTI group is an even number, the time-frequency resource corresponding to the first subframe The frequency domain location is a first frequency domain location, and when the sequence number of the TTI group is an odd number, the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location; Or, when the sequence number of the TTI group is an even number, the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location, when the sequence number of the TTI Group is an odd number The frequency domain location of the time-frequency resource corresponding to the first subframe is a first frequency domain location.
  • the first frequency domain location is indicated by the base station; the second frequency domain location satisfies a first formula, The first formula is: or, or, among them, n PRB is the second frequency domain location, For the first frequency domain location, The number of resource blocks RB occupied by the physical uplink shared channel PUSCH in the frequency domain, The number of RBs occupied by the physical uplink control channel PUCCH in the frequency domain.
  • the method further includes: the user equipment receives first indication information and second indication information from the base station, where An indication information is used to indicate the first frequency domain location, and the second indication information is used to indicate the first formula.
  • the method further includes: the user equipment receives third indication information, the third indication information from the base station Used to indicate that the frequency hopping mode is type one type1.
  • the frequency of the time-frequency resource corresponding to the first subframe The domain location is associated with a slot number of a slot corresponding to the first subframe, where the frequency domain location of the time-frequency resource corresponding to the first subframe satisfies a second formula
  • the second formula is among them, n PRB is the frequency domain position of the time-frequency resource corresponding to the first subframe, and N sb is a sub-band subband number, For the number of RBs included in the subband, n VRB is a virtual frequency domain location, The number of RBs occupied by the PUCCH in the frequency domain, or n s is the slot number of the first subframe, N TX is the current number of transmissions of the one TTI Bundle, and f hop (i) is the subband offset corresponding to the first subframe, f m (i) is a mirror value corresponding to the first subframe.
  • the method further includes: the user equipment receives fourth indication information from the base station, where the fourth indication information is used Indicates the virtual frequency domain location.
  • the method further includes: the user equipment receives, from the base station, fifth indication information, the fifth The indication information is used to indicate the number of the sub-bands.
  • the method further includes: the user equipment receiving the sixth indication information from the base station, where The sixth indication information is used to indicate that the frequency hopping mode is type 2 type 2.
  • the method further includes: the user equipment receives the ninth from the base station Instructing information, the ninth indication information is used to indicate intra- and intra-frequency hopping intra and inter-bundle hopping.
  • the one subframe is the first subframe.
  • the embodiment of the present invention further provides a user equipment that supports the TTI Bundling technology in a TDD network, and includes: a processing unit, configured to determine a frequency domain location of a time-frequency resource corresponding to a subframe; wherein, the one The subframe belongs to a transmission time interval packet TTI Bundle, and the frequency domain location of the time-frequency resource corresponding to the one subframe is the same as the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI Bundle.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is a current transmission number of the TTI Bundle or a slot number of a time slot corresponding to the first subframe
  • the transceiver unit transmits data to the base station by using the time-frequency resource corresponding to the one subframe.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is related to a current number of transmissions of the TTI Bundle
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is a first frequency domain location, and when the current transmission frequency is an odd number, the number of current transmissions is an odd number.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location; or, when the current transmission number is an even number, the first subframe corresponds to The frequency domain location of the time-frequency resource is a second frequency domain location, and when the current number of transmissions is an odd number, the frequency domain location of the time-frequency resource corresponding to the first subframe is A frequency domain location.
  • the first frequency domain location is indicated by the base station; the second frequency domain location satisfies a first formula, The first formula is: or, or, among them, n PRB is the second frequency domain location, For the first frequency domain location, The number of resource blocks RB occupied by the PUSCH in the frequency domain, The number of RBs occupied by the PUCCH in the frequency domain.
  • the transceiver unit is further configured to receive, by the base station, first indication information and second indication information, where the first indication is The information is used to indicate the first frequency domain location, and the second indication information is used to indicate the first formula.
  • the transceiver unit is further configured to receive third indication information from the base station, where the third The indication information is used to indicate that the frequency hopping mode is type one type1.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe is corresponding to the first subframe
  • the slot number of one time slot is associated; wherein the frequency domain position of the time-frequency resource corresponding to the first subframe satisfies a second formula, and the second formula is among them
  • n PRB is the frequency domain position of the time-frequency resource corresponding to the first subframe
  • N sb is a sub-band subband number
  • n VRB is a virtual frequency domain location
  • the number of RBs occupied by the PUCCH in the frequency domain, or n s is the slot number of the first subframe
  • N TX is the current number of transmissions of the TTI Bundle
  • f hop (i) is the subband offset corresponding to the first subframe
  • f m (i) is a mirror value corresponding to the first subframe.
  • the transceiver unit is further configured to receive fourth indication information from the base station, where the fourth indication information is used to indicate The virtual frequency domain location.
  • the transceiver unit is further configured to receive, by the base station, fifth indication information, where the fifth indication information is Used to indicate the number of sub-bands.
  • the transceiver unit is further configured to receive the sixth indication information from the base station, where the sixth indication information is used to indicate that the frequency hopping mode is type 2 type2.
  • the transceiver unit is further configured to receive, by the base station, seventh indication information, where The seventh indication information is used to indicate an inter-packet frequency hopping inter-bundle hopping.
  • the one subframe is the first subframe.
  • the function of the processing unit can be implemented by a processor, and the function of the transceiver unit can be implemented by a transceiver.
  • the functions of the processing unit and the transceiving unit may also be stored in a storage medium as a set of executable instructions that are executed by the processor to implement the functions of the processing unit and the transceiving unit.
  • the embodiment of the present invention provides another user equipment that supports the TTI Bundling technology in a TDD network, and includes: a processing unit, configured to determine a frequency domain location of a time-frequency resource corresponding to one subframe; wherein the one The subframe belongs to a transmission time interval group TTI Group, and the one TTI group belongs to a transmission time interval packet TTI Bundle, and the frequency domain location of the time-frequency resource corresponding to the one subframe corresponds to the TTI Group
  • the frequency domain of the time-frequency resource corresponding to the first subframe is the same; the user equipment sends data to the base station by using the time-frequency resource corresponding to the one subframe.
  • the one TTI Bundle includes multiple TTI groups, and the number of subframes in the multiple TTI Groups is the same.
  • the transceiver unit is further configured to receive, from the base station, eighth indication information, where the eighth indication information is used to indicate The number of sub-frames.
  • the one TTI Bundle includes multiple TTI Groups; the multiple TTI Groups are discontinuous in a time domain; Each TTI Group in the TTI Group, when a plurality of subframes are included, the multiple subframes are consecutive in the time domain.
  • the first subframe corresponding to the time-frequency resource The frequency domain location is associated with the sequence number of the TTI group to which the first subframe belongs; wherein, when the sequence number of the TTI group is an even number, the time-frequency resource corresponding to the first subframe The frequency domain location is a first frequency domain location, and when the sequence number of the TTI group is an odd number, the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location; Or, when the sequence number of the TTI group is an even number, the frequency domain location of the time-frequency resource corresponding to the first subframe is a second frequency domain location, when the sequence number of the TTI Group is an odd number The frequency domain location of the time-frequency resource corresponding to the first subframe is a first frequency domain location.
  • the first frequency domain location is indicated by the base station; the second frequency domain location meets a first formula, The first formula is: or, or, among them, n PRB is the second frequency domain location, For the first frequency domain location, The number of resource blocks RB occupied by the physical uplink shared channel PUSCH in the frequency domain, The number of RBs occupied by the physical uplink control channel PUCCH in the frequency domain.
  • the transceiver unit is further configured to receive, by the base station, first indication information and second indication information, where the first indication is The information is used to indicate the first frequency domain location, and the second indication information is used to indicate the first formula.
  • the transceiver unit is further configured to receive third indication information from the base station, where the third indication information is used Indicates that the frequency hopping mode is type one type1.
  • the frequency of the time-frequency resource corresponding to the first subframe The domain location is associated with a slot number of a slot corresponding to the first subframe, where the frequency domain location of the time-frequency resource corresponding to the first subframe satisfies a second formula
  • the second formula is among them, n PRB is the frequency domain position of the time-frequency resource corresponding to the first subframe, and N sb is a sub-band subband number,
  • n VRB is a virtual frequency domain location, The number of RBs occupied by the PUCCH in the frequency domain, or n s is the slot number of the first subframe, N TX is the current number of transmissions of the one TTI Bundle, and f hop (i) is the subband offset corresponding to the first subframe, f m (i) is a mirror value corresponding to the first subframe.
  • the transceiver unit is further configured to receive fourth indication information from the base station, where the fourth indication information is used to indicate The virtual frequency domain location.
  • the transceiver unit is further configured to receive, by the base station, fifth indication information, where the fifth indication information is Used to indicate the number of sub-bands.
  • the transceiver unit is further configured to receive, by the base station, sixth indication information, where The six indication information is used to indicate that the frequency hopping mode is type 2 type 2.
  • the transceiver unit is further configured to receive the ninth indication information from the base station
  • the ninth indication information is used to indicate intra- and intra-frequency hopping intra and inter-bundle hopping.
  • the one subframe is the first subframe.
  • the function of the processing unit can be implemented by a processor, and the function of the transceiver unit can be implemented by a transceiver.
  • the functions of the processing unit and the transceiving unit may also be stored in a storage medium as a set of executable instructions that are executed by the processor to implement the functions of the processing unit and the transceiving unit.
  • the embodiment of the present invention further provides a data receiving method, where the method corresponds to the method in the first aspect, by which the base station can receive data sent by the user equipment in a frequency domain location determined by the user equipment.
  • the scheme for determining the frequency domain location by the base station is the same as the scheme for determining the frequency domain location by the user equipment in the first aspect.
  • the method may be as follows: the base station determines a frequency domain location of a time-frequency resource corresponding to a subframe, where the one subframe belongs to a transmission time interval packet TTI Bundle, and the one subframe corresponds to the The frequency domain location of the time-frequency resource is the same as the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI Bundle, and the frequency domain of the time-frequency resource corresponding to the first subframe The location is associated with the current number of transmissions of the TTI Bundle or a slot number of a slot corresponding to the first subframe; the base station receives by using the time-frequency resource corresponding to the one subframe The data sent by the user device.
  • how the base station determines the frequency domain location of the time-frequency resource corresponding to the subframe may be referred to the scheme of determining the frequency domain location of the time-frequency resource corresponding to the subframe in the first aspect, which is not described herein.
  • an embodiment of the present invention further provides another data receiving method.
  • the method corresponds to the method in the second aspect, by which the base station can receive data sent by the user equipment in a frequency domain location determined by the user equipment.
  • the scheme for determining the frequency domain location by the base station is the same as the scheme for determining the frequency domain location by the user equipment in the second aspect.
  • the method may be as follows: the base station determines a frequency domain location of a time-frequency resource corresponding to a subframe, where the one subframe belongs to a transmission time interval group TTI Group, and the one TTI group belongs to one transmission time.
  • the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI group is the same as the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI group;
  • the time-frequency resource corresponding to the one subframe receives data sent by the user equipment.
  • the method for determining, by the base station, the frequency domain of the time-frequency resource corresponding to one subframe may be determined by the user equipment in the second aspect. The scheme is not described here.
  • the embodiment of the present invention further provides a base station device, which is used to implement the method in the fifth aspect.
  • the base station may include a processing unit and a transceiver unit, where the processing unit is configured to determine a frequency domain location of a time-frequency resource corresponding to a subframe, where the one subframe belongs to a transmission time interval packet TTI Bundle.
  • the frequency domain location of the time-frequency resource corresponding to the one subframe is the same as the frequency domain location of the time-frequency resource corresponding to the first subframe of the TTI Bundle, where the first subframe corresponds to the
  • the frequency domain location of the time-frequency resource is associated with a current transmission number of the TTI Bundle or a slot number of a time slot corresponding to the first subframe; the transceiver unit is configured to pass the one
  • the time-frequency resource corresponding to the subframe receives data sent by the user equipment.
  • the function of the processing unit can be implemented by a processor, and the function of the transceiver unit can be implemented by a transceiver.
  • the functions of the processing unit and the transceiving unit may also be stored in a storage medium as a set of executable instructions that are executed by the processor to implement the functions of the processing unit and the transceiving unit.
  • the embodiment of the present invention further provides another base station device, which is used to implement the method in the sixth aspect.
  • the base station may include a processing unit and a transceiver unit, where the processing unit is configured to determine a frequency domain location of a time-frequency resource corresponding to a subframe, where the one subframe belongs to a transmission time interval group TTI Group.
  • the TTI group belongs to a transmission time interval packet TTI Bundle, and the frequency domain location of the time-frequency resource corresponding to the one subframe corresponds to a time-frequency resource corresponding to the first subframe of the TTI Group.
  • the frequency domain is in the same location; the transceiver unit is configured to receive data sent by the user equipment by using the time-frequency resource corresponding to the one subframe.
  • the function of the processing unit can be implemented by a processor, and the function of the transceiver unit can be implemented by a transceiver.
  • the functions of the processing unit and the transceiving unit may also be stored in a storage medium as a set of executable instructions that are executed by the processor to implement the functions of the processing unit and the transceiving unit.
  • the embodiment of the present invention further provides a system, including the foregoing user equipment and the foregoing base station.
  • the first to ninth indication information sent by the base station may pass the downlink control information.
  • DCI downlink control information
  • UL Grant uplink grant
  • the method and user equipment provided by the embodiment of the present invention maintain the frequency domain location corresponding to the remaining subframes in the TTI Bundle with the first subframe in the TTI Bundle or the first sub-frame of the TTI Group in the TTI Bundle. After the frame hopping, the corresponding frequency domain positions are consistent, and the frequency hopping between the TTI Bundle or the TTI Bundle in the TDD network is realized, so that a better frequency gain can be obtained.
  • the frequency hopping scheme is compatible with the existing non-TTI Bundle frequency hopping frequency hopping scheme, which reduces the complexity of the implementation of the frequency hopping of the TTI Bundle of the TDD system.
  • FIG. 1 is a schematic diagram of an LTE TDD network according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a user equipment according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 4 is a flowchart of a frequency hopping method according to an embodiment of the present invention.
  • FIG. 5 is a schematic diagram of an effect of an inter-bundle frequency hopping according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of an effect of intra and inter-bundle frequency hopping according to an embodiment of the present invention.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • the embodiment of the present invention is described by taking an LTE TDD network defined by 3GPP as an example.
  • Third Generation Partnership Project (English: 3 rd generation partnership project, referred to as 3GPP) is a wireless communications network dedicated to the development of the project.
  • the LTE TDD network in the embodiments of the present invention complies with the standards of 3GPP, except where specifically described in the embodiments. Those skilled in the art can understand that the solution of the embodiment of the present invention can be applied to other TDD networks.
  • Figure 1 shows an LTE TDD network.
  • the network of FIG. 1 only shows the user equipment 101 and the base station 102. It should be known to those skilled in the art that other devices exist in the actual network.
  • the user equipment 101 is located in the coverage of the base station 102, and can perform service transmission with the base station through the wireless air interface technology.
  • the data transmission performed by the user equipment to the base station may be referred to as uplink transmission, and the uplink transmission data may be referred to as uplink data.
  • Uplink data is typically transmitted on the PUSCH.
  • a user equipment (English device) is a terminal device, which may be a mobile terminal device or a non-mobile terminal device. The device is mainly used to receive or send business data. User equipment can be distributed in the network. User equipments have different names in different networks, such as: terminals, mobile stations, subscriber units, stations, cellular phones, personal digital assistants, wireless modems, wireless communication devices, handheld devices, knees. Upper computer, cordless phone, wireless local loop station, etc.
  • the structure of the user equipment 101 can be as shown in FIG. 2.
  • the user equipment 101 includes a processing unit 201 and a transceiver unit 202.
  • the processing unit 201 is typically used to process data, instructions, etc.
  • the transceiver unit 202 is typically used to receive or transmit information via air interface technology.
  • the functions of the processing unit 201 may be integrated in a processor and implemented by a processor.
  • the processor may be a general purpose processor or a dedicated processor; the function of the transceiver unit 202 It can be implemented by a transceiver.
  • the instruction set that implements the functions of the processing unit 201 and the transceiver unit 202 may be stored in a storage medium, and the instructions are read and executed by the processor to implement the processing unit 201 and the transceiver unit 202.
  • a base station (also referred to as a base station) can also be called a base station device, and is a device deployed in a wireless access network to provide a wireless communication function.
  • a device that provides a base station function in an LTE network includes an evolved Node B (English: evolved Node B abbreviation: eNB or eNodeB), and a device that provides a base station function in a 2G network includes a base transceiver station (English: base transceiver station, referred to as: BTS) and base station controller (English: base station controller, abbreviated as: BSC, the device providing base station function in the 3G network, including Node B (English abbreviation: NodeB) and radio network controller (English: radio network controller, referred to as: RNC) ).
  • BTS base transceiver station
  • BSC base station controller
  • RNC radio network controller
  • the structure of the base station 102 can be as shown in FIG.
  • the base station 102 includes a processing unit 301 and a transceiver unit 302.
  • the processing unit 301 is generally used to process data, instructions, and the like, and the transceiver unit 302 is generally used to receive or transmit information through air interface technology.
  • the functions of the processing unit 301 may be integrated in a processor or a processing board, and the functions are implemented by the processor or the processing board.
  • the processor may be a general-purpose processor or a dedicated processor, and the processing board is a board with signaling and data processing functions; the function of the transceiver unit 302 can be implemented by the transceiver.
  • the instruction set that implements the functions of the processing unit 301 and the transceiver unit 302 may be stored in a storage medium, and the instructions are read and executed by the processor to implement the processing unit 301 and the transceiver unit 302.
  • the uplink and downlink ratio of the network configuration is the uplink-downlink ratio of 0, and the size of the TTI Bundle (which can be represented by the parameter TTI_BUNDLE_SIZE) is 4. It should be understood by those skilled in the art that the solution of the embodiment of the present invention can also be applied to other scenarios of uplink and downlink ratios and other TTI Bundle sizes.
  • the uplink subframes 2, 3, 4, and 7 of the radio frame #1 form a TTI Bundle, labeled TTI Bundle #1-1;
  • the uplink of the radio frame #1 Subframes 8 and 9 and uplink subframes 2 and 3 of radio frame #2 form a TTI Bundle, labeled TTI Bundle #2-1;
  • uplink subframes 4, 7, 8 and 9 of radio frame #2 form a TTI Bundle , labeled TTI Bundle #3-1.
  • Uplink subframes of radio frame #3 Uplink subframes 2, 3, 4 and 7 form a TTI Bundle, labeled TTI Bundle #1-2, uplink subframes 8 and 9 of radio frame #3 and uplink of radio frame #4 Subframes 2 and 3 form a TTI Bundle, labeled TTI Bundle #2-2; the uplink subframes 4, 7, 8 and 9 of Radio Frame #4 form a TTI Bundle, labeled TTI Bundle #3-2.
  • Table 2 only lists the scenes of the first 40 subframes, and there are more TTI Bundles in the actual network environment.
  • HARQ #1 can transmit data in TTI Bundle #1-1
  • HARQ #2 can transmit data in TTI Bundle #2-1
  • HARQ #3 can transmit data in TTI Bundle #3-1.
  • HARQ#1 can use TTI Bundle#1-2 for the first TTI Bundle retransmission.
  • HARQ#2 can use TTI Bundle#2-2 for the first TTI Bundle.
  • Pass, HARQ#2 can use TTI Bundle #3-2 to retransmit the first TTI Bundle.
  • the embodiment of the present invention proposes a frequency hopping mode of two TTI Bundles.
  • the frequency hopping mode of the first type of TTI Bundle is inter-bundle hopping (English: inter-bundle hopping), that is, transmission of two adjacent TTI Bundles for the same HARQ process, using different frequency domain resources (different frequencies)
  • the domain resources can be understood to have different frequency domain positions in the frequency domain, and the same
  • the subframes in the TTI Bundles use the same frequency domain resource.
  • the frequency domain resource f1 is used for the transmission of the TTI Bundle #1-1
  • the frequency domain resource f2 is used for the transmission of the TTI Bundle #1-2, for the TTI.
  • the subframes in the Bundle #1-1 correspond to the frequency domain resource f1
  • the subframes for the TTI Bundle #1-2 correspond to the frequency domain resource f2.
  • the hopping mode of the second TTI Bundle is TTI Bundle intra- and inter-bundle hopping (English: intra and inter-bundle hopping), that is, transmission of a TTI Bundle for the same HARQ process, and the subframes in the TTI Bundle are used.
  • TTI Bundle #1-1 subframes 2 and 3 correspond to frequency domain resource f3, subframes 4 and 7 correspond to frequency domain resource f4, or subframes 2, 3 and 4 correspond to frequency domain resource f5, and subframe 7 corresponds to Frequency domain resource f6.
  • the first method of grouping may specify the number of subframes (also referred to as the size of a packet) included in each packet by the network.
  • the size of the packet may be configured by the base station to the user equipment, or may be agreed in advance. For example, when the packet size is 2, TTI Bundle #1 can be divided into 2 TTI Groups, one is TTI Group #1, including subframes 2 and 3, and the other is TTI Group #2, including subframes 4 and 7.
  • the second grouping method may group consecutive subframes in the time domain according to whether the subframes in the TTI Bundle are consecutively grouped in the time domain. For example, for TTI Bundle #1-1, subframes 2, 3, and 4 are consecutive in the time domain, and subframe 7 and subframe 4 are discontinuous in the time domain, so subframes 2, 3, and 4 can form a TTI Group. Subframe 7 constitutes a TTI Group. It can be seen that one TTI Group can include one or more subframes, and different TTI Groups are discontinuous in the time domain. If a TTI Group includes multiple subframes, the subframes are consecutive in the time domain.
  • TTI Bundle two adjacent TTI Groups use different frequency domain resources, and the same frequency domain resources, such as TTI, are used in subframes in the same TTI Group.
  • Group#1 uses f7
  • TTI Group#2 uses f8 to implement intra and inter-bundle hopping.
  • the base station may send indication information to the user equipment, indicating that the user equipment is inter-bundle hopping or Intra and inter-bundle hopping.
  • the user equipment can be set to one of the frequency hopping modes when the user equipment leaves the factory, so that the user equipment only supports one frequency hopping mode, and when the frequency hopping is required, the UE can report its own frequency hopping mode to Base station.
  • the embodiment of the present invention proposes that the first subframe corresponding to the TTI Bundle can be determined.
  • the frequency domain location determines that the frequency domain location corresponding to the first subframe in the TTI Bundle also serves as the frequency domain location corresponding to other subframes in the TTI Bundle, such that the entire TTI Bundle corresponds to a frequency domain location.
  • the embodiment of the present invention proposes that the first subframe in the TTI Group can be determined.
  • the corresponding frequency domain is determined, that is, the frequency domain location corresponding to the first subframe in the TTI Group also serves as the frequency domain location corresponding to other subframes in the TTI Group, such that the entire TTI Group corresponds to one frequency domain location.
  • the embodiment of the present invention proposes two frequency hopping methods to determine the frequency domain location corresponding to the first subframe.
  • the idea of the first hopping mode is to associate the frequency domain location corresponding to the first subframe in the TTI Bundle with the current number of transmissions of the TTI Bundle.
  • the first frequency hopping mode is called type 1 (type 1).
  • the current number of transmissions of the TTI Bundle is the number of times the TTI Bundle transmits the same data packet to the same HARQ process.
  • HARQ#1 transmits the data packet A in the TTI Bundle #1-1. The number of transmissions can be counted as 1. If the transmission fails, the packet A is retransmitted in TTI Bundle #1-2, and the current number of transmissions can be counted as 2.
  • the frequency domain corresponding to the first subframe in the TTI Bundle may be equal to the first frequency domain position.
  • the first one of the TTI Bundles may be set.
  • the frequency domain location corresponding to the subframe is equal to the second frequency domain location.
  • the frequency domain position corresponding to the first subframe in the TTI Bundle is equal to the first frequency domain position, and the first sub-time in the TTI Bundle is set when the current transmission number is even.
  • the frequency domain position corresponding to the frame is equal to the second frequency domain position.
  • the first frequency domain location may be determined according to an indication of the base station, that is, the base station sends the indication information to the user equipment to notify the user equipment of the first frequency domain location.
  • the second frequency domain location may be determined according to one of the following three formulas.
  • n PRB is the second frequency domain location, For the first frequency domain location, The number of resource blocks RB occupied by the physical uplink shared channel PUSCH in the frequency domain, The number of RBs occupied by the physical uplink control channel PUCCH in the frequency domain.
  • the mapping relationship between the first frequency domain location and the second frequency domain location may be configured on the user equipment, and the mapping relationship satisfies one of the foregoing three formulas.
  • the user equipment can determine the second frequency domain location by looking up the table, instead of calculating the second frequency domain location according to the above formula every time.
  • the base station may also determine the second frequency domain location according to the first frequency domain location, so as to receive uplink data sent by the user equipment in the second frequency domain location.
  • the base station may also be used by the base station to indicate the corresponding formula by the user equipment by using the indication information.
  • the base station transmits two bits of information to the user equipment, where 00 represents equation (1), 01 represents equation (2), and 03 represents equation (3).
  • the second hopping mode is to associate the frequency domain location corresponding to the first subframe in the TTI Bundle with the slot number of the first subframe including one of the two slots.
  • the second frequency hopping mode is called type 2 (type 2).
  • one subframe in the LTE system includes two time slots, and the time slot number of any one time slot can be selected here.
  • the frequency domain position of the time-frequency resource corresponding to the first subframe satisfies the following formula:
  • n PRB is the frequency domain position of the time-frequency resource corresponding to the first subframe
  • N sb is the number of sub-band subbands.
  • n VRB is a virtual frequency domain location
  • the number of RBs occupied by the PUCCH in the frequency domain, or n s is the slot number of the first subframe
  • N TX is the current number of transmissions of the TTI Bundle
  • f hop (i) is the subband offset corresponding to the first subframe
  • f m (i) is a mirror value corresponding to the first subframe.
  • f hop (i) and f m (i) are the same as those of the existing LTE TDD network, and are not described here.
  • formula (4) if the slot numbers of the two slots included in the first subframe of two different TTI Bundles are the same, If it is different, or For example, the first subframe 2 of the TTI Bundle #1-1 and the first subframe 22 of the TTI Bundle #1-2 have the same slot number of the slot.
  • the i corresponding to the subframe 2 is different from the i corresponding to the subframe 22, and therefore the frequency domain position corresponding to the subframe 2 is different from the frequency domain position corresponding to the subframe 22.
  • a mapping relationship between the first frequency domain location and the second frequency domain location may be configured on the user equipment, and the mapping relationship satisfies the above formula (4).
  • the user equipment can determine the second frequency domain location by looking up the table, instead of calculating the second frequency domain location according to the above formula every time.
  • the base station may also determine the second frequency domain location according to the first frequency domain location, so as to receive uplink data sent by the user equipment in the second frequency domain location.
  • the virtual frequency domain location may be sent by the base station to the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, where the indication information is used to indicate the virtual frequency domain location.
  • the number of the sub-bands may be sent by the base station to the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, where the indication information is used to indicate the number of the sub-bands.
  • the base station can notify all user equipments in the cell by using the SIB2 message.
  • the base station may indicate the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, and indicates that the frequency hopping mode adopted by the user equipment is type1 or type2.
  • the embodiment of the invention proposes two frequency hopping methods to determine the first The frequency domain location corresponding to the subframe.
  • the idea of the first type of frequency hopping method is to associate the frequency domain location corresponding to the first subframe in the TTI Group with the sequence number of the TTI Group to which the first subframe belongs.
  • the first frequency hopping mode is called type 1 (type 1).
  • the serial number of the TTI Group can be numbered starting from 0, or it can be numbered starting from 1.
  • the sequence number of the TTI group is an even number
  • the frequency domain location corresponding to the first subframe in the TTI group may be equal to the first frequency domain location.
  • the sequence number of the TTI group is an odd number
  • the location may be set.
  • the frequency domain location corresponding to the first subframe in the TTI Group is equal to the second frequency domain location.
  • the frequency domain location corresponding to the first subframe in the TTI Group is equal to the first frequency domain location
  • the TTI Group is set when the serial number of the TTI Group is even.
  • the frequency domain position corresponding to the first subframe in the middle is equal to the second frequency domain location.
  • the first frequency domain location may be determined according to an indication of the base station, that is, the base station sends the indication information to the user equipment to notify the user equipment of the first frequency domain location.
  • the second frequency domain location may be determined according to one of the above formulas (1), (2), and (3), and details are not described herein.
  • the mapping relationship between the first frequency domain location and the second frequency domain location may be configured on the user equipment, and the mapping relationship satisfies one of the foregoing three formulas.
  • the user equipment can determine the second frequency domain location by looking up the table, instead of calculating the second frequency domain location according to the above formula every time.
  • the base station may also determine the second frequency domain location according to the first frequency domain location, so as to receive uplink data sent by the user equipment in the second frequency domain location.
  • the base station may also be used by the base station to indicate the corresponding formula by the user equipment by using the indication information.
  • the base station transmits two bits of information to the user equipment, where 00 represents equation (1), 01 represents equation (2), and 03 represents equation (3).
  • the second frequency hopping method is to associate the frequency domain location corresponding to the first subframe in the TTI Group with the slot number of the first subframe including one of the two slots.
  • the second frequency hopping mode is called type 2 (type 2).
  • one subframe in the LTE system includes two time slots, and the time slot number of any one time slot can be selected here.
  • the frequency domain position of the time-frequency resource corresponding to the first subframe satisfies the above formula (4), and the content of the formula (4) is not described herein.
  • a mapping relationship between the first frequency domain location and the second frequency domain location may be configured on the user equipment, and the mapping relationship satisfies the above formula (4).
  • the user equipment can determine the second frequency domain location by looking up the table, instead of calculating the second frequency domain location according to the above formula every time.
  • the base station may also determine the second frequency domain location according to the first frequency domain location, so as to receive uplink data sent by the user equipment in the second frequency domain location.
  • the virtual frequency domain location may be sent by the base station to the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, where the indication information is used to indicate the virtual frequency domain location.
  • the number of the sub-bands may be sent by the base station to the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, where the indication information is used to indicate the number of the sub-bands.
  • the base station can notify all the user equipments in the cell by using the SIB2 message.
  • the base station may indicate the user equipment by using the indication information, that is, the base station sends the indication information to the user equipment, and indicates that the frequency hopping mode adopted by the user equipment is type1 or type2.
  • the base station 102 sends the frequency hopping configuration information to the user equipment 101.
  • the transceiver unit 302 of the base station 102 can send the frequency hopping configuration. To user equipment 101.
  • the transceiver unit 202 of the user equipment 101 may receive the frequency hopping configuration sent by the base station 102.
  • the user equipment 101 determines, according to the frequency hopping configuration information, a frequency domain location of a time-frequency resource corresponding to one subframe.
  • the processing unit 201 of the user equipment 101 may be configured to determine a frequency domain location of a time-frequency resource corresponding to one subframe.
  • the processing unit 301 of the base station device 102 may be configured to determine a frequency domain location of a time-frequency resource corresponding to one subframe.
  • the user equipment 101 sends a data packet to the base station 102 on the time-frequency resource corresponding to the current subframe.
  • the transceiver unit 202 of the user equipment 101 may be configured to send data to the base station 102 by using the determined time-frequency resource corresponding to one subframe.
  • the base station 102 can receive the data packet sent by the user equipment 101 on the corresponding time-frequency resource.
  • the transceiver unit of the base station 102 may be configured to receive, by using the determined time-frequency resource corresponding to one subframe, a data packet sent by the user equipment 101 at the time-frequency resource.
  • the base station 102 can send the frequency hopping configuration information to the user equipment 101 by using one of the system broadcast message, the downlink control information (English: downlink control information), the SIB2 message, and the uplink grant (English: UL Grant).
  • step 401 the frequency hopping configuration sent by the base station 102 to the user equipment 101 is as follows:
  • Parameter 1 Frequency hopping mode: inter-bundle hopping
  • the indication information carrying the frequency hopping formula in the frequency hopping configuration is actually equal to which type of hopping is indicated, whether it is type1 or type2.
  • the user equipment 101 will send the number of subframes 2 in the TTI Bundle #1-1.
  • the user equipment can know that the number of transmissions of the current TTI Bundle is one, and that the frequency domain position corresponding to the first subframe in the TTI Bundle is equal to the first frequency domain position, and the first time is set.
  • a frequency domain location is indicated by the base station, so the user equipment determines that the frequency domain location corresponding to the current subframe 2 is N1, and transmits data in the frequency domain location in step 403.
  • the user equipment 101 can determine that the frequency domain position corresponding to the subframes 3, 4 and 7 is the frequency domain position of the subframe 2, that is, the data packet can be transmitted to the base station 102 at the frequency domain position N1. . If the data transmitted by the user equipment 101 at the TTI Bundle #1-1 is not correctly received by the base station 102, the user equipment 101 resends the data at TTI Bundle #1-2.
  • the first subframe of the TTI Bundle #1-2 is the subframe 2, and for the subframe 2, the user equipment knows that the current TTI Bundle transmission number is 2, and it is assumed that the first TTI Bundle is set when the current transmission times are even.
  • the frequency domain location corresponding to the subframes is equal to the second frequency domain location, and the second frequency domain location is determined according to the first frequency domain location and the formula (1).
  • the user equipment 101 according to formula (1) and the first The frequency domain location N1 obtains the second frequency domain location N2 and transmits data to the base station 102 at the frequency domain location N2 in step 403.
  • user equipment 101 may determine the frequency domain locations corresponding to subframes 3, 4, and 7 of TTI Bundle #1-2 and the children of TTI Bundle #1-2
  • the corresponding frequency domain position of frame 2 is the same, that is, the data is transmitted to the base station 102 at the frequency domain position N2.
  • the second frequency domain location can also be determined by the same method, such that the base station 102 can receive data transmitted by the user equipment 101 at the second frequency domain location N2.
  • the frequency hopping result of this example is shown in FIG. 5.
  • TTI Bundle #1-1 performs data transmission in the frequency domain position N1
  • TTI Bundle #1-2 performs data transmission in the frequency domain position N2.
  • the formula (1) in the above frequency hopping configuration can also be replaced by the formula (2), or the formula (3), or the formula (4).
  • the frequency hopping configuration may further include parameter 4: the number of subbands, and the parameter 3 may be a virtual frequency domain location.
  • different parameters in the above frequency hopping configuration can be sent in one message or sent through different messages.
  • the frequency hopping configuration sent by base station 102 to user equipment 101 is as follows:
  • Parameter 1 Frequency hopping mode: intra and inter-bundle hopping
  • Parameter 5 The number of subframes in the TTI Group is 2
  • parameter 2 in the frequency hopping configuration indicates the frequency hopping formula (4), which actually implies that the frequency hopping mode is type2. Similarly, if parameter 2 indicates the frequency hopping formula (1) or (2) or (3), it implicitly indicates that the frequency hopping mode is type1.
  • parameter 5 herein indicates the method of the first grouping described above.
  • parameter 5 may also indicate the method of the second grouping described above.
  • the user equipment 101 may adopt the second grouping method by default.
  • the user equipment 101 determines the frequency domain location corresponding to the subframe. Specifically, the user equipment 101 will transmit data to the base station 102 at the TTI Bundle #1-1. According to parameter 5, TTI Bundle #1-1 will be divided into two TTI Groups, one is TTI Group #1 and the other is TTI Group #2, TTI Group #1 includes subframes 2 and 3, and TTI Group #2 includes subframe 4 And 7. For the subframe 2, since the subframe 2 is the first subframe of the TTI Group #1, the frequency domain position N3 corresponding to the subframe 2 can be obtained by the formula (4). Therefore, the user equipment 101 can be in step 403. The data corresponding to the subframe 2 is transmitted to the base station 102 through the frequency domain position N3.
  • the frequency domain position of subframe 3 is equal to the frequency domain position of subframe 2, that is, equal to the frequency domain position N3.
  • the frequency domain position N4 corresponding to the subframe 4 can be obtained by the formula (4), that is, in step 403, the user equipment 101 can The frequency domain position N4 transmits the data corresponding to the subframe 4.
  • the frequency domain location of the subframe 4, that is, the frequency domain location N4 can be directly determined. Therefore, the user equipment can transmit the data corresponding to the subframe 7 in the frequency domain location N4.
  • the user equipment 101 can perform the second transmission by using the TTI Bundle #1-2.
  • the TTI Group #1 of the TTI Bundle #1-2 can transmit the data in the frequency domain position N5.
  • TTI Group #2 of TTI Bundle #1-2 can transmit data in the frequency domain position N6, and the frequency hopping result of this example is shown in FIG. I will not repeat them here.
  • N3 and N5 may be the same or different, and N4 and N6 may be the same or different.
  • the frequency domain position corresponding to the remaining subframes in the TTI Bundle is maintained with the first subframe in the TTI Bundle or the TTI Group in the TTI Bundle. After a subframe is hopped, the corresponding frequency domain positions are consistent, and the frequency hopping between the TTI Bundle or the TTI Bundle in the TDD network is realized, so that a better frequency gain can be obtained.
  • the frequency hopping scheme is compatible with the existing non-TTI Bundle frequency hopping frequency hopping scheme, which reduces the complexity of the implementation of the frequency hopping of the TTI Bundle of the TDD system.
  • a general purpose processor may be a microprocessor.
  • the general purpose processor may be any conventional processor, controller, microcontroller, or state machine.
  • the processor may also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other similar configuration. achieve.
  • the steps of the method or algorithm described in the embodiments of the present invention may be directly embedded in hardware, a software unit executed by a processor, or a combination of the two.
  • the software unit 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 The processor is coupled such that the processor can read information from the storage medium and can write information to the storage medium.
  • the storage medium can also be integrated into the processor.
  • the processor and the storage medium may be disposed in an ASIC, and the ASIC may be disposed in the UE. Alternatively, the processor and the storage medium may also be located in different components in the UE.
  • 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 may be stored on a computer readable medium or transmitted as one or more instructions or code to 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 purpose or special processor.
  • 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 source through a coaxial cable, fiber optic computer, twisted pair, digital subscriber line (DSL) Or wirelessly transmitted in, for example, infrared, wireless, and microwave, is 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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Abstract

L'invention concerne un procédé de transmission de données dans un réseau TDD utilisant une technique de groupage de TTI et un équipement utilisateur prenant en charge une technique de groupage de TTI dans un réseau TDD. Le procédé comprend les étapes suivantes : un équipement utilisateur détermine une position de domaine fréquentiel d'une ressource temps-fréquence correspondant à une sous-trame, où la sous-trame appartient à un groupage d'intervalles de temps de transmission (groupage de TTI), et la position de domaine fréquentiel de la ressource temps-fréquence correspondant à la sous-trame est la même que la position de domaine fréquentiel d'une ressource temps-fréquence correspondant à une première sous-trame du groupage de TTI ; et l'équipement utilisateur envoie des données à une station de base par l'intermédiaire de la ressource temps-fréquence correspondant à la sous-trame. Grâce à la solution, le bond de fréquence d'un groupage de TTI peut être réalisé dans un réseau TDD, et un meilleur gain de fréquence peut être obtenu.
PCT/CN2015/079064 2015-05-15 2015-05-15 Procédé de transmission de données dans un réseau tdd utilisant une technique de groupage de tti et équipement utilisateur prenant en charge une technique de groupage de tti dans un réseau tdd WO2016183726A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2015/079064 WO2016183726A1 (fr) 2015-05-15 2015-05-15 Procédé de transmission de données dans un réseau tdd utilisant une technique de groupage de tti et équipement utilisateur prenant en charge une technique de groupage de tti dans un réseau tdd
CN201580072999.3A CN107155310A (zh) 2015-05-15 2015-05-15 一种在使用TTI Bundling技术的TDD网络中传输数据的方法和在TDD网络中支持TTI Bundling技术的用户设备

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