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WO2016183739A1 - Procédé et appareil de détermination de ressources de fréquence - Google Patents

Procédé et appareil de détermination de ressources de fréquence Download PDF

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Publication number
WO2016183739A1
WO2016183739A1 PCT/CN2015/079082 CN2015079082W WO2016183739A1 WO 2016183739 A1 WO2016183739 A1 WO 2016183739A1 CN 2015079082 W CN2015079082 W CN 2015079082W WO 2016183739 A1 WO2016183739 A1 WO 2016183739A1
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Prior art keywords
subframe
frequency hopping
frequency
frequency resource
determined
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PCT/CN2015/079082
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English (en)
Chinese (zh)
Inventor
唐浩
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201580079995.8A priority Critical patent/CN107534971B/zh
Priority to PCT/CN2015/079082 priority patent/WO2016183739A1/fr
Publication of WO2016183739A1 publication Critical patent/WO2016183739A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • 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 wireless communication technologies, and in particular, to a frequency resource determining method and apparatus.
  • the transmission time interval bundling (TTI Bundling) is performed on the one hand.
  • the user equipment sends the uplink data carrying the same service data information to the serving base station at a plurality of consecutive transmission time intervals to reduce the time delay caused by the uplink data sent by the user equipment being retransmitted multiple times.
  • the user equipment uses a hopping technique to retransmit the same uplink data to the serving base station in different frequency domain locations, and improves the transmission quality of the uplink data by using the obtained frequency diversity gain.
  • the embodiment of the invention provides a method and a device for determining a frequency resource, which are used to solve the problem of determining a TTI Bundling frequency resource.
  • a first aspect of the embodiments of the present invention provides a method for determining a frequency resource, where the method is used for a user equipment or a base station that serves the user equipment, and includes:
  • Determining a frequency hopping mode of a transmission time interval binding that includes multiple subframes is an Inter-bundle hopping frequency hopping
  • a transmission time interval binding that includes multiple subframes a frequency resource location, where the frequency resource location bound to the transmission time interval includes a frequency resource location of the multiple subframes, wherein a frequency resource location of each of the multiple subframes is equal to a frequency resource location of the subframe k,
  • the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k
  • the frequency hopping variable of the subframe k is determined by a time domain location of the subframe k
  • the subframe k is One of the plurality of subframes.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one of the slots included in the subframe k.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data.
  • a frequency hopping variable of the subframe k is caused by a time domain location of the subframe k and a current transmission of the uplink data Determined by the number of times, including:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one of the slots included in the subframe k
  • CURRENT_TX_NB is the current number of transmissions of the uplink data.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.
  • the frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval, including:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • SFN k is the system frame number of the radio frame in which the subframe k is located
  • n s is the slot number of one of the slots included in the subframe k
  • TTI_BUNDLING_SIZE is the size of the transmission time interval binding
  • K is a fixed constant.
  • the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:
  • the frequency resource location of the subframe k is determined by the following formula:
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • a second aspect of the embodiments of the present invention provides a frequency resource determining method, where the method uses The base station of the user equipment or the user equipment, including:
  • Determining the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;
  • the frequency resource location of the subframe k in the subband m is determined by a frequency hopping variable of the subframe k in the subband m;
  • the frequency hopping variable of the subframe k in the subband m is determined by the following formula:
  • i is the frequency hopping variable of the subframe k in the subband m
  • n s is the slot number of one of the slots included in the subframe k of the subband m
  • CURRENT_TX_NB is the current transmission of the uplink data The number of times
  • SFN k is the system frame number of the radio frame in which the subframe k in the subband m is located
  • Intra_bundle_size is the frequency hopping interval
  • K is a fixed constant.
  • the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:
  • the frequency resource location of the subframe k is determined by the following formula:
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • the frequency resource position of the sub-band m is different from the frequency resource position of the sub-band m when m is an even number.
  • the frequency resource position of the sub-band m is indicated by the base station
  • the frequency resource position of the sub-band m is determined by the following formula:
  • the frequency resource position of the sub-band m is indicated by the base station
  • the frequency resource position of the sub-band m is determined by the following formula:
  • a third aspect of the embodiments of the present invention provides a device for determining a frequency resource, where the device user equipment or a base station that serves the user equipment is characterized by:
  • a first determining unit configured to determine a frequency hopping mode of the transmission time interval binding of the multiple subframes as an Inter-bundle hopping frequency hopping
  • a second determining unit configured to determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of the multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes the multiple subframes a frequency resource location, where a frequency resource location of each of the plurality of subframes is equal to a frequency resource location of the subframe k, and a frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k,
  • the frequency hopping variable of the sub-frame k is determined by the time domain position of the sub-frame k, and the sub-frame k is one of the plurality of sub-frames.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one of the slots included in the subframe k.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current number of transmissions of the uplink data.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k and the current transmission of the uplink data. Determined by the number of times, including:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one of the slots included in the subframe k
  • CURRENT_TX_NB is the current number of transmissions of the uplink data.
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k, and includes:
  • the frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.
  • the frequency hopping variable of the subframe k is determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval, including:
  • the frequency hopping variable of the subframe k is determined by the following formula:
  • i is the frequency hopping variable of the subframe k
  • SFN k is the system frame number of the radio frame in which the subframe k is located
  • n s is the slot number of one of the slots included in the subframe k
  • TTI_BUNDLING_SIZE is the size of the transmission time interval binding
  • K is a fixed constant.
  • the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:
  • the frequency resource location of the subframe k is determined by the following formula:
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • a fourth aspect of the embodiments of the present invention provides a frequency resource determining apparatus, where the device is a user equipment or a base station that serves the user equipment, and includes:
  • a first determining unit determining that the frequency hopping mode of the transmission time interval binding is a transmission time interval binding intra-binding (Intra and Inter-bundle) frequency hopping, where the transmission time interval binding includes N sub-bands;
  • a second determining unit configured to determine the N subband neutrons in the frequency hopping mode a frequency resource location with m, the frequency resource locations of all subframes in the subband m are the same, the frequency resource location of the subband m is equal to the frequency resource location of the subframe k in the subband m, the subband m is one of the N subbands, and the subframe k in the subband m is one of the subbands m.
  • the frequency resource location of the subframe k in the subband m is determined by a frequency hopping variable of the subframe k in the subband m;
  • the frequency hopping variable of the subframe k in the subband m is determined by the following formula:
  • i is the frequency hopping variable of the subframe k in the subband m
  • n s is the slot number of one of the slots included in the subframe k of the subband m
  • CURRENT_TX_NB is the current transmission of the uplink data The number of times
  • SFN k is the system frame number of the radio frame in which the subframe k in the subband m is located
  • Intra_bundle_size is the frequency hopping interval
  • K is a fixed constant.
  • the frequency resource location of the subframe k is determined by a frequency hopping variable of the subframe k, and includes:
  • the frequency resource location of the subframe k is determined by the following formula:
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • the frequency resource position of the sub-band m is different from the frequency resource position of the sub-band m when m is an even number.
  • the frequency resource position of the sub-band m is indicated by the base station
  • the frequency resource position of the sub-band m is determined by the following formula:
  • the frequency resource position of the sub-band m is indicated by the base station
  • the frequency resource position of the sub-band m is determined by the following formula:
  • a technical solution provided by the embodiment of the present invention can implement frequency-hopping between transmission time interval bundling or transmission time interval binding between intra-bind hopping, thereby correctly combining TTI bundling technology and frequency hopping technology. Improve the transmission quality of uplink data, thereby improving the user experience.
  • FIG. 1 is a schematic diagram of a frame structure of a transmission time interval binding in an LTE system
  • 2A is a schematic flow chart of a method for determining a frequency resource
  • 2B and 2C are schematic diagrams showing a position of a frequency resource
  • FIG. 3A is a schematic flowchart diagram of a method for determining a frequency resource
  • 3B and 3C are schematic diagrams showing a position of a frequency resource
  • FIG. 4 is a schematic structural diagram of an apparatus 400 for frequency resource determination
  • FIG. 5 is a schematic structural diagram of an apparatus 500 for frequency resource determination.
  • the base station may be an evolved Node B (eNB).
  • eNB evolved Node B
  • the base station can provide communication coverage for UEs in a particular geographic area.
  • the base station may be a macro base station and a small base station according to the size of the communication coverage, and the small base station may include a micro base station, a pico base station, and a home base station.
  • the UE is located in a particular geographic area covered by the communication provided by the base station.
  • the UE can be static or mobile.
  • the UE may be referred to as a terminal, a mobile station (Mobile Station, MS), a subscriber unit (Subscriber Unit), a station (Station), and the like.
  • the UE can be a Cellular Phone, a Personal Digital Assistant (PDA), a wireless modem (Modem), a wireless communication device, a handheld device, a laptop computer, a cordless phone (Cordless). Phone), Wireless Local Loop (WLL) station, etc.
  • PDA Personal Digital Assistant
  • Modem wireless modem
  • WLL Wireless Local Loop
  • FIG. 1 shows a schematic diagram of a frame structure of a transmission time interval binding in an LTE system.
  • the base station may not receive or cannot correctly decode due to the low uplink coverage strength.
  • the uplink data (for example, voice data) sent by the UE is out.
  • the TTI Bundling technology transmits the uplink data carrying the same information to form a plurality of uplink data of different coding forms (still carrying the same information) in consecutive uplink subframes, and the consecutive subframes constitute a transmission time interval.
  • TTI binding 1 (consisting of subframes 0-3) and TTI binding 2 (consisting of subframes 6-9) are composed of 4 consecutive uplink subframes, TTI binding 1 and TTI binding 2 has the same frequency domain location.
  • one TTI corresponds to one subframe.
  • the number of TTIs included in one transmission time interval binding may be determined by the transmission time interval binding size TTI_BUNDLE_SIZE, and the TTI_BUNDLE_SIZE may be configured by the base station for the UE.
  • the transmission time interval binding can be implemented.
  • the base station sets the size of TTI_BUNDLE_SIZE to 4, but does not exclude other values.
  • the base station feeds back an ACK (correct reception)/NACK (incorrect reception) for the transmission of the transmission time interval binding, without binding the transmission time interval.
  • Each TTI in the feedback ACK/NACK When the transmission of a TTI Bundle is not correctly received by the base station, the UE may use the next transmission time interval binding to retransmit the uplink data.
  • the initial transmission and at least one retransmission of the transmission time interval binding of the uplink data carrying the same information are handled by the same hybrid automatic repeat request (HARQ) process.
  • HARQ hybrid automatic repeat request
  • the base station still needs the UE to perform multiple retransmissions of the transmission time interval binding due to the poor quality of the uplink coverage, which undoubtedly causes an increase in the time delay for processing the uplink data.
  • Obtaining the frequency diversity gain according to the frequency hopping technology can improve the accuracy of the base station acquiring the uplink data, thereby reducing the number of retransmissions of the UE, and reducing the time delay of the uplink data. Therefore, how to determine the frequency resource location bound by the transmission time interval is a technical problem discussed in various embodiments of the present invention.
  • An embodiment of the present invention provides a method for determining a frequency resource, such as a method for determining a frequency resource, as shown in FIG. 2A, where the method is used for a UE or a base station that serves the UE, and the method includes the following content.
  • the base station may determine that the frequency hopping mode configured for the UE is a frequency hopping between transmission time intervals.
  • the frequency hopping mode may be that the base station randomly selects the UE, or the frequency hopping mode may be selected by the base station according to channel state information reported by the UE, or may be selected according to the number of UE cell handovers. . For example, if the channel state information indicates that the channel quality between the UE and the base station is greater than a certain preset threshold, then the transmission time interval bundling is selected. If the number of UE cell handovers is less than a certain threshold, the frequency hopping between the transmission time interval bindings is selected.
  • the eNB may send RRC signaling to the UE by using a radio resource control (RRC) connection established between the UE and the base station, where the RRC signaling is used to indicate the frequency hopping
  • RRC radio resource control
  • the mode is mode indication information for frequency hopping between transmission time intervals. For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE switches to the base station, the base station may pass the RRC letter. Let the mode indication information be sent.
  • the base station may also send downlink control information (DCI) to the UE in the physical downlink control channel, where the DCI is used to indicate that the frequency hopping mode is a frequency hopping between transmission time intervals. Mode indication information.
  • DCI downlink control information
  • the UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals.
  • 202 Determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes a frequency resource location of the multiple subframes, where a frequency resource location of the multiple subframes is equal to a frequency resource location of the subframe k, and a frequency resource location of the subframe k is represented by a frequency hopping variable of the subframe k It is determined that the frequency hopping variable of the subframe k is determined by the time domain position of the subframe k, and the subframe k is one of the multiple subframes.
  • the base station or the UE determines that the frequency hopping mode is a frequency hopping between transmission time intervals, and the base station or the UE may learn that there is a frequency hopping between the transmission time interval bindings, at one transmission time interval.
  • the frequency resource locations of all subframes in the binding are the same, and there is no frequency hopping between subframes and subframes in a transmission time interval binding. Therefore, the frequency resource location bound by one transmission time interval is determined by the frequency resource location of one subframe within the transmission time interval (which may be assumed to be subframe k for convenience of reference).
  • the frequency resource location bound by the transmission time interval may be determined according to the frequency hopping variable of the subframe k, and the frequency hopping variable of the subframe k is related to the time domain location of the subframe k.
  • the frequency hopping variable of the subframe k can be determined only by the time domain position of the subframe k, and the specific formula is as follows:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one of the slots included in the subframe k.
  • the frequency hopping variable of the subframe k may be determined by the time domain location of the subframe k and the current number of transmissions of the uplink data to be sent by the UE, and the specific formula is as follows:
  • i is the frequency hopping variable of the subframe k
  • n s is the slot number of one slot included in the subframe k
  • CURRENT_TX_NB is the current number of transmissions of the uplink data.
  • one subframe includes two slots, and the slot number of the subframe k takes two consecutive values from 0 to 19.
  • the frequency hopping variable of the subframe k calculated using the slot number of any one of the slots included in the subframe k according to the above formula is unique.
  • the current number of transmissions of the uplink data CURRENT_TX_NB is the number of times the uplink data is retransmitted by the UE. in case The uplink data is initially transmitted by the UE, and the current transmission number of uplink data CURRENT_TX_NB is 0.
  • the frequency hopping variable of the subframe k may be determined by the system frame number of the radio frame in which the subframe k is located and the size of the transmission time interval binding.
  • the specific formula is as follows:
  • i is the frequency hopping variable of the subframe k
  • SFN k is the system frame number of the radio frame in which the subframe k is located
  • n s is one of the time slots included in the subframe k of the subband m
  • the slot number, TTI_BUNDLING_SIZE is the size of the transmission time interval binding
  • K is a fixed constant.
  • K is 10 or 20.
  • the system frame number is taken from 0 to 1023, and the frequency hopping variable i is taken from 0 to 9, or 0 to 19, so the value of the frequency hopping variable is limited to the range by K, so that Compatible with the calculation of the frequency hopping variable i of the existing LTE system.
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • Step 202 The base station and the UE may obtain a frequency resource location where the transmission time interval is bound in a transmission transmission time interval binding intra-hop frequency.
  • the UE may retransmit the uplink data to the base station by using the physical uplink shared channel at the frequency resource location bound to the transmission interval, where the base station passes the physical uplink shared channel at the frequency resource location bound to the transmission interval. Receiving uplink data retransmitted by the UE.
  • a schematic diagram of the frequency resource locations shown in FIGS. 2B and 2C can be obtained.
  • the frequency resource location bound to each transmission time interval is determined by the method shown in FIG. 2A, and the time domain location in each transmission time interval binding may be indicated by the base station by RRC signaling or DCI (the base station may indicate At least one of each transmission time interval binding, thereby obtaining a physical resource location bound for each transmission time interval.
  • the frequency hopping mode when the frequency hopping mode is frequency hopping between transmission time interval bindings, multiple subframes included in one transmission time interval binding occupy the same frequency resource location, and therefore, the transmission time interval is bound.
  • the frequency resource location is equal to the frequency resource location of the subframe k in the multiple subframes, and the frequency resource location bound by the transmission time interval can be obtained according to the frequency hopping variable of the subframe k.
  • the technical solution provided by the embodiment of the present invention can implement frequency hopping between all subframes in the same transmission time interval binding, and frequency hopping between different transmission time interval bindings, thereby correctly implementing TTI bundling technology and hopping.
  • the combination of frequency technologies can improve the transmission quality of uplink data, thereby improving the user equipment experience.
  • Another aspect of the present invention provides a method for determining a frequency resource, such as a method for determining a frequency resource, as shown in FIG. 3, the method is used for a user equipment or a base station serving the user equipment, and the method includes The following content.
  • the base station may determine that the frequency hopping mode configured for the UE is a transmission time interval binding inner-binding frequency hopping.
  • the frequency hopping mode may be that the base station randomly selects the UE, or the frequency hopping mode may be selected by the base station according to channel state information reported by the UE, or may be selected according to the number of UE cell handovers. . For example, if the channel state information indicates that the channel quality between the UE and the base station is less than a certain preset threshold, then the transmission time interval bundling is selected. If the number of UE cell handovers is greater than a certain threshold, the frequency hopping between the transmission time interval bindings is selected.
  • the eNB may send RRC signaling to the UE by using a radio resource control RRC connection established between the UE and the base station, where the RRC signaling carries a signal indicating that the frequency hopping mode is tied to a transmission time interval.
  • Mode indication information between the inbound and the binding. For example, when the UE has initially accessed the base station through a random access procedure, when the UE fails to the radio link of the base station, or when the UE occurs to switch to the base station, The base station may send the mode indication information by using RRC signaling.
  • the base station may also send a DCI to the UE in a physical downlink control channel, where the DCI carries mode indication information for indicating that the frequency hopping mode is a binding time interval binding inner-binding. For example, when the UE initially accesses the base station by using a random access procedure, the base station carries the mode indication information in the DCI sent in response to the UE.
  • the UE may determine, according to the received mode indication information, that the frequency hopping mode is a transmission time interval binding inner-binding frequency hopping.
  • the 302. Determine, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands.
  • the frequency resource locations of all subframes in the subband m are the same, and the frequency resource location of the subband m Equal to the frequency resource location of the subframe k in the subband m, the subband m is one of the N subbands, and the subframe k in the subband m is one of the subbands m.
  • the base station or the UE determines that the frequency hopping mode is a transmission time interval binding intra-bundling frequency hopping, and the base station or the UE may learn that a transmission time interval binding is composed of N subbands.
  • Each of the first N-1 subbands is composed of hopping intervals of Y subframes. Since the total number of all subframes in the transmission time interval binding may not be divisible by Y, the number of subframes constituting the last subband is the total number of subframes in one transmission time interval binding minus Y*(N-1).
  • the frequency resource positions of all subframes in each subband are the same (that is, there is no frequency hopping between subframes in one subband), and the different subbands calculate the frequency resource locations of different subbands by the frequency resource location formula (may be the same, May be different) to achieve frequency hopping between subbands.
  • the base station or the UE determines a frequency resource location of one subframe in one subband (eg, subframe k in the subband m), and determines a frequency resource location of the subband.
  • the hopping interval Y is configured by the base station, and the eNB may carry the hopping interval Y in RRC signaling or DCI and send the hopping interval to the UE.
  • the frequency resource position of the subframe k in the subband m is determined by the frequency hopping variable of the subframe k in the subband m; the frequency hopping variable of the subframe k in the subband m is determined by the following formula determine:
  • i is the frequency hopping variable of the subframe k in the subband m
  • n s is the slot number of one of the slots included in the subframe k of the subband m
  • CURRENT_TX_NB is the current transmission of the uplink data The number of times
  • SFN k is the system frame number of the radio frame in which the subframe k in the subband m is located
  • Intra_bundle_size is the frequency hopping interval
  • K is a fixed constant.
  • one subframe includes two slots, and the slot number of the subframe k is in the value Two consecutive values from 0 to 19.
  • the frequency hopping variable of the subframe k calculated using the slot number of any one of the slots included in the subframe k according to the above formula is unique.
  • the system frame number is taken from 0 to 1023, and the frequency hopping variable i is taken from 0 to 9, or 0 to 19, so the value of the frequency hopping variable is limited to the range by K, so that Compatible with the calculation of the frequency hopping variable i of the existing LTE system.
  • the frequency resource location of the subframe k is determined according to the frequency hopping variable of the subframe k, and the specific frequency resource location formula is as follows:
  • n PRB is the frequency resource location of the subframe k
  • N sb is the number of subbands used for physical uplink shared channel transmission.
  • n VRB is a location of a virtual resource block occupied by the subframe k indicated by the base station
  • i is the frequency hopping variable of the subframe k
  • f hop (i) is the subband offset corresponding to the subframe k
  • f m i
  • the frequency resource location of the subband m may not be determined by the frequency resource location of the subframe k in the subband m.
  • the N subbands in a transmission time interval binding include an odd subband and an even subband, an odd subband and an even subband frequency resource position, thereby implementing a transmission time interval binding inner-bundle jump. frequency.
  • the frequency resource locations of all the even subbands in the multiple transmission time interval bindings are the same, and the frequency resource locations of all the odd subbands are the same.
  • the even subbands in the transmission time interval binding are determined.
  • the frequency resource locations of the odd subbands can obtain the frequency resource locations of the even subbands and the odd subbands in all the transmission time interval bindings.
  • the frequency resource location of an odd subband is indicated by the base station
  • the frequency resource position of the even subband is determined by the following formula:
  • the frequency resource location of the even subband is indicated by the base station
  • the frequency resource position of the odd subband is determined by the following formula:
  • the sub-band m is a frequency resource location
  • RB START is a location of a physical resource block indicated by the base station
  • the base station and the UE may obtain a frequency resource location where the transmission time interval is bound in a transmission transmission time interval binding intra-hop frequency.
  • the UE may retransmit the uplink data to the base station by using the physical uplink shared channel at the frequency resource location bound to the transmission interval, where the base station passes the physical uplink shared channel at the frequency resource location bound to the transmission interval. Receiving uplink data retransmitted by the UE.
  • a schematic diagram of a frequency resource position shown in FIG. 3B and FIG. 3C can be obtained.
  • the frequency resource positions of all the subframes in one subband within one transmission time interval are the same, and one transmission time interval is tied.
  • the frequency resource location bound to each transmission time interval is determined by the method shown in FIG. 3A, and the time domain location in each transmission time interval binding may be RRC by the base station.
  • a command or DCI indication (the base station may indicate at least one of each transmission time interval binding) to obtain a physical resource location bound for each transmission time interval.
  • the technical solution provided by the embodiment of the present invention can implement the same frequency resource location of all subframes in a subband within one transmission time interval binding, and frequency hopping between different subbands within one transmission time interval, thereby correctly Combining TTI bundling technology with frequency hopping technology can improve the transmission quality of uplink data, thereby improving the user equipment experience.
  • a device 400 for frequency resource determination such as the structure of the device 400 shown in FIG. 4, which may be a user equipment or a base station serving the user equipment, the device 400 includes a first determining unit 401 and a second determining unit 402.
  • the first determining unit 401 is configured to determine that the frequency hopping mode of the transmission time interval binding of the multiple subframes is a frequency hopping between transmission time intervals.
  • the first determining unit 401 is used to implement the step 201 in the foregoing method embodiment, and the step 201 and the description of the step 201 can be implemented by the first determining unit 401.
  • a second determining unit 402 configured to determine, in the frequency hopping mode, a frequency resource location where a transmission time interval of the multiple subframes is bound, where the frequency resource location bound by the transmission time interval includes the multiple subframes a frequency resource location, wherein a frequency resource location of each of the plurality of subframes is equal to a frequency resource location of the subframe k, the subframe k
  • the frequency resource location is determined by the frequency hopping variable of the subframe k
  • the frequency hopping variable of the subframe k is determined by the time domain location of the subframe k
  • the subframe k is the multiple subframes One of the sub-frames.
  • the second determining unit 402 is used to implement the foregoing method, and the step 202 and the description of the step 202 are implemented by the first determining unit 402. For details, refer to the description of the method embodiment.
  • the device may further include a transceiver unit 403.
  • the transceiver unit 403 is configured to send and receive any information transmitted between the base station and the UE, such as uplink data or other control information (RRC signaling or DCI, etc.).
  • the base station may determine, by using the first determining unit 401, that the frequency hopping mode is a frequency hopping between transmission time intervals, and may be randomly selected by the first determining unit 401 from multiple frequency hopping modes.
  • the multiple frequency hopping modes may include at least a transmission time interval binding frequency hopping and a transmission time interval binding inner-binding frequency hopping.
  • the base station may use the transceiver unit 403 to send RRC signaling to the UE on the RRC connection established between the UE and the base station, where the RRC signaling carries the indication frequency hopping mode as the transmission time interval binding.
  • Inter-frequency hopping mode indication information For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE generates a handover to the base station, the base station uses the transceiver.
  • the unit 403 sends the mode indication information by using RRC signaling.
  • the base station may also use the transceiver unit 403 to send a DCI to the UE in a physical downlink control channel, where the DCI carries a mode indication for indicating that the frequency hopping mode is a frequency hopping between transmission time intervals. information.
  • the base station may determine, by using the second determining unit 402, a frequency resource location bound to each transmission time interval, and may use the transceiver unit 403 at the determined frequency.
  • the uplink data retransmitted by the UE is received at a resource location.
  • the UE may receive, by using the transceiver unit 403, the mode indication information sent by the base station;
  • the UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals by using the first determining unit 401, and determine, by using the second determining unit 402, each transmission time. The frequency resource location to which the interval is bound. The UE may retransmit the uplink data to the base station by using the transceiver unit 403 at the determined frequency resource location.
  • the functions that the first determining unit 401 and the second determining unit 402 can implement may be integrated in one or more processors of the device 400.
  • the functions that the transceiver unit 403 can implement may be specifically transmitted and received by the device 400.
  • Device Those skilled in the art can understand that in order to implement the technical solution in the embodiments of the present invention, the device 400 may further include a memory, an antenna, and other electronic circuits.
  • the apparatus 400 provided by the embodiment of the present invention can implement frequency hopping between all subframes in the same transmission time interval binding, and frequency hopping between different transmission time interval bindings, thereby correctly implementing TTI bundling technology and hopping.
  • the combination of frequency technologies can improve the transmission quality of uplink data, thereby improving the user equipment experience.
  • the apparatus 500 includes a first determining unit 501 and a second determining unit 502.
  • the first determining unit 501 is configured to determine that the frequency hopping mode of the transmission time interval binding is a transmission time interval binding inner-binding frequency hopping, where the transmission time interval binding includes N sub-bands, and N is greater than or equal to An integer of 2.
  • the second determining unit 502 is configured to determine, in the frequency hopping mode, a frequency resource location of the subband m in the N subbands, where frequency resources of all subframes in the subband m are the same.
  • the frequency resource location of the subband m is equal to the frequency resource location of the subframe k in the subband m, and the subband m is one of the N subbands, the subband m
  • the neutron frame k is one of the sub-bands m.
  • the first determining unit 501 is configured to implement step 301 in the foregoing method embodiment
  • the second determining unit 502 is configured to implement step 302 in the foregoing method embodiment.
  • step 301 and the description of step 302 reference may be made to the method embodiment.
  • the device 500 further includes a transceiver unit 503.
  • the transceiver unit 403 is configured to send and receive any information transmitted between the base station and the UE, such as uplink data or other control information (RRC signaling or DCI, etc.).
  • the base station may determine, by using the first determining unit 501, that the frequency hopping mode is the intra-bind hopping of the transmission time interval, and the first determining unit 401 may be configured from multiple hopping modes. Randomly selected, the multiple frequency hopping modes may include at least a transmission time interval binding frequency hopping and a transmission time interval binding inner-binding frequency hopping.
  • the base station may use the transceiver unit 503 to send RRC signaling to the UE on the RRC connection established between the UE and the base station, where the RRC signaling carries the indication frequency hopping mode as the transmission time interval binding.
  • Inter-frequency hopping mode indication information For example, after the UE initially accesses the base station through a random access procedure, when the UE fails to the radio link of the base station, and when the UE generates a handover to the base station, the base station uses the transceiver.
  • the unit 503 sends the mode indication information by using RRC signaling.
  • the base station may also use the transceiver unit 503 to send a DCI to the UE in a physical downlink control channel, where the DCI carries a mode indication for indicating that the frequency hopping mode is a frequency hopping between transmission time intervals. information.
  • the base station may determine, by using the second determining unit 502, a frequency resource location bound to each transmission time interval, and may use the transceiver unit 503 at the determined frequency.
  • the uplink data retransmitted by the UE is received at a resource location.
  • the UE may receive, by using the transceiver unit 503, the mode indication information sent by the base station;
  • the UE may determine, according to the received mode indication information, that the frequency hopping mode is a frequency hopping between transmission time intervals by using the first determining unit 501, and determine, by using the second determining unit 502, each transmission time. The frequency resource location to which the interval is bound. The UE may retransmit the uplink data to the base station by using the transceiver unit 503 at the determined frequency resource location.
  • the functions that the first determining unit 501 and the second determining unit 502 can implement may be integrated in one or more processors of the device 500.
  • the functions that the transceiver unit 503 can implement may be specifically transmitted and received by the device 500.
  • Device Those skilled in the art can understand that in order to implement the technical solution in the embodiments of the present invention, the device 500 may further include a memory, an antenna, and other electronic circuits.
  • the apparatus 500 provided by the embodiment of the present invention can implement the same frequency resource location of all subframes in one subband within one transmission time interval binding, and frequency hopping between different subbands within one transmission time interval, thereby correctly Combining TTI bundling technology with frequency hopping technology can improve the transmission quality of uplink data, thereby improving the user equipment experience.
  • information and data can be represented by using any technology, for example, data, instructions, commands, information, signals.
  • Bit, Symbol, and Chip can pass voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination of the above.
  • the Illustrative Logical blocks, units, and steps listed in the embodiments of the present invention may also be implemented by electronic hardware, computer software, or a combination of the two.
  • the various illustrative components, units, and steps described above have generally described their functionality. Such work Whether it is implemented by hardware or software depends on the specific application and the design requirements of the entire system. A person skilled in the art can implement the described functions using various methods for each specific application, but such implementation should not be construed as being beyond the scope of the embodiments of the present invention.
  • 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 module executed by a processor, or a combination of the two.
  • the software modules can be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium in the art.
  • the storage medium can be coupled to the processor 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 user terminal. Alternatively, the processor and the storage medium may also be disposed in different components in the user terminal.
  • the above-described functions described in the embodiments of the present invention may be implemented in hardware, software, firmware, or any combination of the three. If implemented in software, these functions may be stored on a computer readable medium or transmitted as one or more instructions or code to a computer readable medium.
  • Computer readable medium including computer storage medium A communication medium 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de détermination de ressources de fréquence. Dans le procédé, aucun saut de fréquence n'est exécuté entre les sous-trames du même groupe d'intervalles de temps de transmission, et un saut de fréquence est exécuté entre des groupes d'intervalles de temps de transmission différents. L'invention concerne également un procédé de détermination de ressources de fréquence. Dans le procédé, des positions de ressources de fréquence de toutes les sous-trames d'une sous-bande dans un groupe d'intervalles de temps de transmission sont identiques, et le saut de fréquence est exécuté entre différentes sous-bandes dans un groupe d'intervalles de temps de transmission. L'invention concerne également un appareil correspondant au procédé. Dans la solution technique de l'invention, une technique de groupage de TTI peut être combinée correctement avec une technique de saut de fréquence, la qualité de transmission de données de liaison montante est améliorée, de même que l'expérience avec un équipement d'utilisateur.
PCT/CN2015/079082 2015-05-15 2015-05-15 Procédé et appareil de détermination de ressources de fréquence Ceased WO2016183739A1 (fr)

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