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WO2017000376A1 - Procédé d'indication et dispositif d'indication pour l'attribution de ressources, station de base, et terminal - Google Patents

Procédé d'indication et dispositif d'indication pour l'attribution de ressources, station de base, et terminal Download PDF

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Publication number
WO2017000376A1
WO2017000376A1 PCT/CN2015/088468 CN2015088468W WO2017000376A1 WO 2017000376 A1 WO2017000376 A1 WO 2017000376A1 CN 2015088468 W CN2015088468 W CN 2015088468W WO 2017000376 A1 WO2017000376 A1 WO 2017000376A1
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WIPO (PCT)
Prior art keywords
resource block
block group
group size
terminal
resource
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PCT/CN2015/088468
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English (en)
Chinese (zh)
Inventor
李明菊
朱亚军
张云飞
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宇龙计算机通信科技(深圳)有限公司
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Publication of WO2017000376A1 publication Critical patent/WO2017000376A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0066—Requirements on out-of-channel emissions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a method for indicating resource allocation when an LTE system operates in an unlicensed frequency band, a pointing device for resource allocation when an LTE system operates in an unlicensed frequency band, a terminal, and A base station.
  • 3GPP The 3 rd Generation Partnership Project, the third generation mobile communications partner organization
  • licensed band increasingly insufficient to provide higher network capacity.
  • 3GPP is discussing how to use unlicensed bands, such as the 2.4 GHz and 5 GHz bands, with the help of licensed bands. These unlicensed bands are currently mainly used in systems such as Wi-Fi, Bluetooth, radar, and medical.
  • LAA LTE Assisted Access
  • SDL Supplemental Downlink
  • TDD TDD mode
  • LTE systems operating in unlicensed bands have the ability to provide higher frequency efficiency and greater coverage, while relying on the same core network to allow data traffic between licensed and unlicensed bands. Sew switch. For the user, this means a better broadband experience, higher speed, better stability and mobility.
  • Wi-Fi Wireless Fidelity
  • CSMA/CD Carrier Sense Multiple Access/Collision Detection
  • the basic principle of this method is Wi-Fi. Before the AP (Access Point) or the terminal sends signaling or data, it must first monitor whether other APs or other terminals are transmitting/receiving signaling or data. If so, continue to listen until it is monitored. If not, a random number is generated as the backoff time. If no signaling or data transmission is detected during this backoff time, the AP or the terminal may start transmitting signaling or data after the end of the backoff time. The process is shown in Figure 2.
  • CSMA/CD Carrier Sense Multiple Access/Collision Detection
  • LAA proposes a variety of listening mechanisms based on FBE (Frame based Equipment) and LBE (Load based Equipment).
  • FBE Framework based Equipment
  • LBE Load based Equipment
  • the EU stipulates that the bandwidth usage in the unlicensed frequency band should exceed 80%.
  • the coverage of the LAA SCell Small Cell
  • the number of UEs that can be scheduled is small, the number of Resource Blocks (RBs) allocated to each UE will be relatively large.
  • the number of bits occupied by the resource allocation (Resource Allocation) field in the traditional DCI (Downlink Control Information) signaling is relatively large. Specifically, it is determined according to the system bandwidth.
  • Table 1 shows the method of indicating resource allocation by the allocation method of type 0.
  • the left column indicates the system bandwidth, which is indicated by the number of RBs occupied by the system bandwidth.
  • the right side indicates the size of the RBG (Resource Block Group), specifically N RBs.
  • the resource Allocation field needs to occupy 10 bits to indicate the resource allocation of 10 RBs.
  • a certain bit is 1, the RB corresponding to the bit is allocated to the UE, otherwise it is 0.
  • the RB corresponding to the bit is not allocated to the UE.
  • a set of 3 RBs requires a total of 17 bits to indicate.
  • Figure 4 shows the allocation of resources in the resource allocation mode of type 1, as well as the bandwidth of 50 RB.
  • the Resource Allocation field is divided into three domains.
  • the first domain occupies the number of bits. Indicates the RB that uses the first subset (subset), here is the third.
  • the uppercase P indicates two meanings: one means 50 RB, one RBG is P(3) RBs; the other means that 50 RBs are divided into P(3) subsets as shown in FIG.
  • the second field occupies 1 bit, with 0 being the left-aligned allocation and 1 being the right-aligned allocation.
  • the size of the third field occupying the number of bits is the number of bits in the resource allocation mode of type 0 minus the number of bits in the first two fields, 14 bits.
  • resource allocation to indicate resource allocation use DCI format1A, 1B or 1D to use 1bit to indicate whether to use Type2 localized (distributed) or distributed (distributed) allocation method, and format 1C is always distributed method.
  • RB_start resource block start point
  • length length
  • RIV Resource Indication Information
  • the invention is based on the above problems, and proposes a new technical solution, which can effectively reduce the number of bits occupied by the resource allocation domain in the DCI signaling in the unlicensed frequency band, thereby reducing the signaling overhead.
  • a method for indicating resource allocation of an LTE system in an unlicensed frequency band including: determining that the LTE system is in the non- An operating bandwidth of the licensed frequency band; adjusting a resource block group size and/or a resource block group size selection value corresponding to the working bandwidth; according to the adjusted resource block group size and/or the resource block group size
  • the candidate value determines a target resource block group size; the target resource block group size and the resource block group allocation information are notified to the terminal by target signaling to allocate one or more resource block groups to the terminal.
  • the resource block group size and/or the resource block group size corresponding to the working bandwidth of the LTE system are adjusted, and the adjusted resource block group size is corresponding according to the working bandwidth.
  • the candidate value of the resource block group size determines the target resource block group size that needs to be notified to the terminal finally, and informs the terminal of the target resource block group size and the resource block group allocation information by target (designated) signaling, so as to achieve
  • the terminal allocates the corresponding resource block, so that the terminal can allocate resources through multiple allocation modes, and can effectively adjust the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth on the unlicensed band.
  • the number of bits occupied by the resource allocation domain in the target signaling is reduced, thereby reducing signaling overhead.
  • the adjusting the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth includes: increasing the resource corresponding to the working bandwidth. a block group size; or increasing the resource block group size corresponding to the working bandwidth and setting a plurality of selection values of the resource block group size corresponding to the working bandwidth; or setting a plurality of the work The available value of the resource block group size corresponding to the bandwidth.
  • the solution 1 increase The size of the resource block group corresponding to the working bandwidth, for example, for the resource allocation mode of type 0, the resource block group size corresponding to the working bandwidth of the 50 RB before the unadjusted is 3 RBs, and 17 bits are required for resource allocation indication, if the resource allocation is increased by 50 RBs
  • the resource block group size corresponding to the working bandwidth is adjusted to 6 RBs, and the number of bits required for resource allocation is directly halved, which significantly reduces the signaling overhead, and may of course be increased by other ratios;
  • the value of the resource block group size corresponding to the working bandwidth for example, the resource block group size corresponding to the 50 RB working bandwidth before the adjustment is only one 3 RB, and the adjusted 50 RB working bandwidth corresponding resource
  • the candidate value of the block group size may have multiple selection values of 6 RB
  • the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth By adjusting the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth, the number of bits occupied by the resource allocation domain in the target signaling is reduced on the unlicensed band, thereby reducing signaling overhead and passing
  • the above adjustment may allocate multiple resource block groups for each terminal.
  • the adjusting the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth further comprising: determining the number of the terminals that need to be scheduled; The working bandwidth and the number of the terminals determine the resource block group size, wherein the resource block group size is proportional to the total number of resource blocks of the working bandwidth and inversely proportional to the number of the terminals.
  • the resource block group size corresponding to the working bandwidth of the LTE system in the unlicensed band may be adjusted according to the number of terminals that need to be scheduled in the uplink and downlink, and the resource block group size and the working bandwidth are specifically determined.
  • the total number of resource blocks is proportional to the number of terminals. When the value is used, preferably, the quotient of the total number of resource blocks and the number of terminals is rounded up. In this case, each terminal can be assigned the same number (one or more). Therefore, the resource block group can be preferentially allocated to the terminal with the highest priority of the scheduling priority, thereby improving the resource allocation efficiency and reducing the number of signaling bits to reduce the signaling overhead.
  • the number of the terminal and the terminal that need to be scheduled are determined according to the CSI information of the broadband in the working bandwidth fed back by the terminal on the PUSCH and the throughput of the terminal.
  • the CSI (Channel State Information) information of the broadband and the throughput of the terminal in the working bandwidth fed back by the terminal on the PUSCH (Physical Uplink Shared Channel) are preferably terminals.
  • the recent throughput determines the number of terminals and terminals that need to be scheduled, and then determines the target resource block group size.
  • the resource block group can be preferentially allocated to the terminal with the highest scheduling priority, thereby improving the resource allocation efficiency and reducing the letter. Let the number of bits to reduce signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block start point or a resource block start point and an interval, The size of the interval is proportional to the resource block group size and the number of the terminals that need to be scheduled; and the plurality of the resource block group size selection values are notified to the terminal by using the RRC signaling. And notifying the terminal by the target resource block group size and the allocation information of the resource block group by using resource allocation field bits in the DCI signaling.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the target resource block group size can be determined by RRC signaling. Informing the terminal and notifying the terminal of the allocation information of the resource block group by DCI signaling, or informing the terminal of the selection value of the plurality of resource block groups by using RRC signaling, and determining the target in the selection value of the plurality of resource block groups
  • the resource block group size and the allocation information of the resource block group are notified to the terminal through the DCI signaling, so that the terminal knows the resource block group allocated thereto, wherein the resource block group allocation information includes but is not limited to The specific location of the resource block group; or the starting point of the resource block, for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can be made.
  • a device for indicating resource allocation of an LTE system in an unlicensed frequency band includes: a first determining module, configured to determine that the LTE system is in the unlicensed frequency band a working bandwidth; an adjustment module, configured to adjust a resource block group size and/or a resource block group size selection value corresponding to the working bandwidth; and a second determining module, configured to adjust the resource block group size according to the / or the selection value of the resource block group size is determined And an indication module, configured to notify, by the target signaling, the target resource block group size and the resource block group allocation information to the terminal, to allocate one or more resource block groups to the terminal.
  • the resource block group size and/or the resource block group size corresponding to the working bandwidth of the LTE system are adjusted, and the adjusted resource block group size is corresponding according to the working bandwidth.
  • the candidate value of the resource block group size determines the target resource block group size that needs to be notified to the terminal finally, and informs the terminal of the target resource block group size and the resource block group allocation information by target (designated) signaling, so as to achieve
  • the terminal allocates the corresponding resource block, so that the terminal can allocate resources through multiple allocation modes, and can effectively adjust the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth on the unlicensed band.
  • the number of bits occupied by the resource allocation domain in the target signaling is reduced, thereby reducing signaling overhead.
  • the adjusting module is specifically configured to: increase the resource block group size corresponding to the working bandwidth; or increase the resource block group size corresponding to the working bandwidth And setting a plurality of selection values of the resource block group size corresponding to the working bandwidth; or setting a plurality of selection values of the resource block group size corresponding to the working bandwidth.
  • the solution 1 increase The size of the resource block group corresponding to the working bandwidth, for example, for the resource allocation mode of type 0, the resource block group size corresponding to the working bandwidth of the 50 RB before the unadjusted is 3 RBs, and 17 bits are required for resource allocation indication, if the resource allocation is increased by 50 RBs
  • the resource block group size corresponding to the working bandwidth is adjusted to 6 RBs, and the number of bits required for resource allocation is directly halved, which significantly reduces the signaling overhead, and may of course be increased by other ratios;
  • the value of the resource block group size corresponding to the working bandwidth for example, the resource block group size corresponding to the 50 RB working bandwidth before the adjustment is only one 3 RB, and the adjusted 50 RB working bandwidth corresponding resource
  • the candidate value of the block group size may have multiple selection values of 6 RB
  • Solution 3 Set multiple resource blocks corresponding to the working bandwidth
  • the value of the group size is selected.
  • the candidate value of the resource block group size corresponding to the working bandwidth of the unadjusted 50 RB is only one 3 RB, and the adjusted 50 RB working bandwidth corresponds to
  • the resource block group size may have 2 RB, 3 RB, 6 RB, 7 RB, and 8 RB, which includes the original value, a value smaller than the original value, and a value larger than the original value.
  • the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth By adjusting the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth, the number of bits occupied by the resource allocation domain in the target signaling is reduced on the unlicensed band, thereby reducing signaling overhead and passing
  • the above adjustment may allocate multiple resource block groups for each terminal.
  • the adjustment module specifically includes: a third determining module, configured to determine a quantity of the terminal that needs to be scheduled; and a calculating module, configured to determine, according to the working bandwidth and the number of the terminals, The resource block group size, wherein the resource block group size is proportional to a total number of resource blocks of the working bandwidth and inversely proportional to the number of the terminals.
  • the resource block group size corresponding to the working bandwidth of the LTE system in the unlicensed band may be adjusted according to the number of terminals that need to be scheduled in the uplink and downlink, and the resource block group size and the working bandwidth are specifically determined.
  • the total number of resource blocks is proportional to the number of terminals. When the value is used, preferably, the quotient of the total number of resource blocks and the number of terminals is rounded up. In this case, each terminal can be assigned the same number (one or more). Therefore, the resource block group can be preferentially allocated to the terminal with the highest priority of the scheduling priority, thereby improving the resource allocation efficiency and reducing the number of signaling bits to reduce the signaling overhead.
  • the third determining module is specifically configured to: determine, according to the CSI information of the broadband in the working bandwidth that the terminal feeds back on the PUSCH, and the throughput of the terminal, determine that the scheduling needs to be performed. The number of terminals and the terminals.
  • the CSI (Channel State Information) information of the broadband and the throughput of the terminal in the working bandwidth fed back by the terminal on the PUSCH (Physical Uplink Shared Channel) are preferably terminals.
  • the recent throughput determines the number of terminals and terminals that need to be scheduled, and then determines the target resource block group size.
  • the resource block group can be preferentially allocated to the top priority of the scheduling priority, thereby improving resource allocation efficiency and reducing The number of signaling bits to reduce signaling overhead.
  • the target signaling includes: RRC signaling and DCI
  • the information of the resource block group includes: a location of the resource block group or a resource block group start point or a resource block group start point and an interval, where the size of the interval is different from the resource block group size and the station to be scheduled.
  • the number of terminals is directly proportional; and the indication module is specifically configured to: notify, by the RRC signaling, a plurality of the selected values of the resource block group size to the terminal; and pass the resources in the DCI signaling
  • the allocation domain bit informs the terminal of the target resource block group size and the allocation information of the resource block group.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the target resource block group size can be determined by RRC signaling. Informing the terminal and notifying the terminal of the allocation information of the resource block group by DCI signaling, or informing the terminal of the selection value of the plurality of resource block groups by using RRC signaling, and determining the target in the selection value of the plurality of resource block groups
  • the resource block group size and the allocation information of the resource block group are notified to the terminal through the DCI signaling, so that the terminal knows the resource block group allocated thereto, wherein the resource block group allocation information includes but is not limited to The specific location of the resource block group; or the starting point of the resource block, for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can be made.
  • a third aspect of the present invention provides a method for indicating resource allocation of an LTE system in an unlicensed frequency band, which is used for a terminal, including: receiving target signaling from a base station; and acquiring, according to the target signaling, the LTE system a target resource block group size and a resource block group allocation information corresponding to a working bandwidth of the unlicensed band, wherein the target resource block group size is according to the adjusted resource block group corresponding to the working bandwidth of the unlicensed band
  • An alternative value of size and/or resource block group size is determined to determine one or more resource block groups that the base station allocates for the terminal.
  • the target signaling from the base station by receiving the target signaling from the base station, acquiring the target resource block group size and the resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, and determining the one or the allocation of the base station to the terminal.
  • Multiple resource block groups which can be adjusted The resource block group size and/or the resource block group size selection value corresponding to the working bandwidth, and the target resource block group size according to the adjusted resource block group size and/or resource block group size corresponding to the working bandwidth of the unlicensed band
  • the selection value is determined to effectively reduce the number of bits occupied by the resource allocation domain in the target signaling on the unlicensed frequency band, thereby reducing signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block group start point or a resource block group start point and An interval, wherein the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the allocation information of the resource block group includes but is not limited to: a resource block group.
  • the specific location; or the starting point of the resource block for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can clearly know the allocation to The resource block group; or the resource block start point and interval, such as the distributed resource allocation mode of type 2, when it is necessary to allocate a resource block group to more than two terminals, and the interval is not equal to the resource block group size, the interval is required to be indicated.
  • the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the method further includes: feeding back, to the base station, the CSI information of the broadband in the working bandwidth on the PUSCH, where the base station allocates one or more resource block groups to the terminal; Receiving, by the RRC signaling, the candidate value of the plurality of resource block group sizes corresponding to the working bandwidth, and receiving the target resource block group sent by the base station by using DCI signaling a size and allocation information of the resource block group; determining, according to the plurality of resource block group size selection values, the target resource block group size, and the resource block group allocation information, that the base station allocates the terminal One or more resource block groups.
  • the CSI (Channel State Information) information of the wideband in the working bandwidth fed back to the base station on the PUSCH (Physical Uplink Shared Channel) is used by the base station to allocate a terminal for the terminal. Or a plurality of resource block groups; and acquiring the target resource block group size by receiving the RRC signaling from the base station and acquiring the allocation information of the resource block group by using the received DCI signaling from the base station, Or obtaining the candidate value of the plurality of resource block groups by using the received RRC signaling from the base station, acquiring the target resource block group size and the resource block group allocation information by using the received DCI signaling from the base station, and further according to the multiple
  • the allocation value of the resource block group, the target resource block group size, and the allocation information of the resource block group determine that the base station allocates one or more resource block groups to the terminal, so that the terminal with the highest priority of the scheduling priority can be allocated resources preferentially. Block groups, thereby improving resource allocation efficiency while reducing the number of signaling bits
  • a device for indicating resource allocation in an unlicensed frequency band of an LTE system comprising: a receiving module, configured to receive target signaling from a base station; and an acquiring module, configured to Decoding the target resource block group size and resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, wherein the target resource block group size is according to the adjusted non- The resource block group size corresponding to the working bandwidth of the licensed band and/or the candidate value of the resource block group size are determined to determine one or more resource block groups allocated by the base station to the terminal.
  • the technical solution by receiving the target signaling from the base station, acquiring the target resource block group size and the resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, and determining the one or the allocation of the base station to the terminal. a plurality of resource block groups, wherein the resource block group size corresponding to the working bandwidth and/or the resource block group size may be adjusted, and the target resource block group size is corresponding to the adjusted working bandwidth of the unlicensed band
  • the resource block group size and/or the resource block group size are selected to effectively reduce the number of bits occupied by the resource allocation field in the target signaling on the unlicensed band, thereby reducing signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block group start point or a resource block group start point and An interval, wherein the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the allocation information of the resource block group includes but is not limited to: a resource block group.
  • the specific location; or the starting point of the resource block for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can be explicitly obtained.
  • the method further includes: a sending module, configured to feed back, to the base station, the CSI information of the broadband in the working bandwidth on the PUSCH, where the base station allocates one or more
  • the receiving module is further configured to: receive an optional value of a plurality of resource block group sizes corresponding to the working bandwidth sent by the base station by using RRC signaling; and receive the base station to pass The target resource block group size and the resource block group allocation information sent by the method of the DCI signaling;
  • the acquiring module is specifically configured to: select the value according to the multiple resource block group size, and the target The resource block group size and the allocation information of the resource block group determine one or more resource block groups allocated by the base station to the terminal.
  • the CSI (Channel State Information) information of the wideband in the working bandwidth fed back to the base station on the PUSCH (Physical Uplink Shared Channel) is used by the base station to allocate a terminal for the terminal. Or a plurality of resource block groups; and may obtain the target resource block group size by receiving the RRC signaling from the base station and acquire the allocation information of the resource block group by using the received DCI signaling from the base station, or by receiving the received information from The RRC signaling of the base station acquires the candidate value of the multiple resource block groups, and obtains the target resource block group size and the resource block group allocation information through the received DCI signaling from the base station, and further selects according to the multiple resource block groups.
  • the value, the target resource block group size, and the resource block group allocation information determine that the base station allocates one or more resource block groups to the terminal, so that the terminal with the highest priority of the scheduling priority can be preferentially allocated the resource block group, thereby improving resources.
  • the allocation efficiency reduces the number of signaling bits simultaneously to reduce signaling overhead.
  • a fifth aspect of the present invention provides a base station, comprising: the indication device for resource allocation of an LTE system for a base station in an unlicensed frequency band according to any one of the foregoing technical solutions, and therefore, the base station has the foregoing technical solution. All the beneficial effects of the indication device for resource allocation of the LTE system for the base station in the unlicensed frequency band according to any one of the above descriptions are not described herein again.
  • a sixth aspect of the present invention provides a terminal, comprising: the indication device for resource allocation in an unlicensed frequency band of an LTE system for a terminal according to any one of the foregoing technical solutions, Therefore, the terminal has all the beneficial effects of the indication device for resource allocation of the LTE system of the terminal in the unlicensed frequency band according to any one of the foregoing technical solutions, and details are not described herein again.
  • the number of bits occupied by the resource allocation domain in the DCI signaling can be effectively reduced on the unlicensed frequency band, thereby reducing signaling overhead.
  • Figure 1 shows a schematic diagram of two modes of operation of an unlicensed band
  • FIG. 2 is a schematic diagram showing an interference avoidance rule of a Wi-Fi system
  • FIG. 3 is a schematic diagram showing a resource allocation method of Type 0 when the bandwidth is 50 RB;
  • FIG. 4 is a schematic diagram showing a resource allocation method of Type 1 when the bandwidth is 50 RB;
  • FIG. 5 is a schematic flowchart diagram of a method for indicating resource allocation of an LTE system in an unlicensed frequency band according to an embodiment of the present invention
  • FIG. 6 shows a block diagram of an indication device for resource allocation of an LTE system in an unlicensed frequency band, according to an embodiment of the present invention
  • FIG. 7 is a flow chart showing a method for indicating resource allocation of an LTE system in an unlicensed frequency band according to another embodiment of the present invention.
  • FIG. 8 is a block diagram showing a pointing device for resource allocation of an LTE system in an unlicensed band according to another embodiment of the present invention.
  • Figure 9 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • Figure 10 shows a block diagram of a terminal in accordance with one embodiment of the present invention.
  • FIG. 5 illustrates an LTE system in an unlicensed band according to an embodiment of the present invention. Schematic diagram of the method of indicating the source allocation.
  • a method for indicating resource allocation in an unlicensed frequency band of an LTE system is used for a base station, including: Step 502, determining an operating bandwidth of the LTE system in the unlicensed frequency band. Step 504, adjusting a resource block group size and/or a resource block group size selection value corresponding to the working bandwidth; step 506, according to the adjusted resource block group size and/or the resource block group size The candidate value determines the target resource block group size; step 508, the target resource block group size and the resource block group allocation information are notified to the terminal by target signaling, to allocate one or more resource block groups to the terminal .
  • the resource block group size and/or the resource block group size corresponding to the working bandwidth of the LTE system are adjusted, and the adjusted resource block group size is corresponding according to the working bandwidth.
  • the candidate value of the resource block group size determines the target resource block group size that needs to be notified to the terminal finally, and informs the terminal of the target resource block group size and the resource block group allocation information by target (designated) signaling, so as to achieve
  • the terminal allocates the corresponding resource block, so that the terminal can allocate resources through multiple allocation modes, and can effectively adjust the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth on the unlicensed band.
  • the number of bits occupied by the resource allocation domain in the target signaling is reduced, thereby reducing signaling overhead.
  • the step 504 specifically includes: increasing the resource block group size corresponding to the working bandwidth; or increasing the resource block group size and setting corresponding to the working bandwidth. a plurality of candidate values of the resource block group size corresponding to the working bandwidth; or a plurality of candidate values of the resource block group size corresponding to the working bandwidth.
  • the solution 1 increase The size of the resource block group corresponding to the working bandwidth, for example, for the resource allocation mode of type 0, the resource block group size corresponding to the working bandwidth of the 50 RB before the unadjusted is 3 RBs, and 17 bits are required for resource allocation indication, if the resource allocation is increased by 50 RBs
  • the resource block group size corresponding to the working bandwidth is adjusted to 6 RBs, and the number of bits required for resource allocation is directly halved, which significantly reduces the signaling overhead, and may of course be increased by other ratios;
  • the candidate value of the resource block group size corresponding to the working bandwidth for example, the candidate value of the resource block group size corresponding to the working bandwidth of the 50 RB before the unadjusted is only one 3 RB, and the adjusted 50 RB.
  • the available value of the resource block group size corresponding to the working bandwidth may have multiple selection values of 6 RB, 7 RB, and 8 RB, and simultaneously increase the resource block group size of the selection value of each resource block group size (for example, unadjusted The former is 3RB, and the adjusted is 6RB, 7RB, and 8RB, all of which are increased.) It is obvious that the signaling overhead can be further reduced, and the number of available values of the resource block group size and the resource block group size can be increased. Set the number of resource block groups corresponding to the working bandwidth, for example, for the distributed resource allocation mode of type 2, the resource block group size corresponding to the working bandwidth of the 50 RB before the adjustment.
  • the value of the resource block group corresponding to the working bandwidth of the adjusted 50 RB may be 2 RB, 3 RB, 6 RB, 7 RB, 8 RB, which includes the original value and is smaller than the original value. The value and the value greater than the original value.
  • the type 0, type 1, and type 2 centralized allocation modes it is preferable to select a larger resource block group size among the plurality of resource block group size selection values corresponding to the working bandwidth, and in the type 2 distributed allocation mode.
  • the smaller the resource block group size of the plurality of resource block group sizes corresponding to the working bandwidth is selected, but it should be noted that it is only a preferred embodiment, but is not limited thereto, and may be adjusted as needed. .
  • the step 504 further includes: determining a quantity of the terminal that needs to be scheduled; determining the resource block group size according to the working bandwidth and the number of the terminals, where the The resource block group size is proportional to the total number of resource blocks of the working bandwidth and inversely proportional to the number of terminals.
  • the resource block group size corresponding to the working bandwidth of the LTE system in the unlicensed band may be adjusted according to the number of terminals that need to be scheduled in the uplink and downlink, and the resource block group size and the working bandwidth are specifically determined.
  • the total number of resource blocks is proportional to the number of terminals. When the value is used, preferably, the quotient of the total number of resource blocks and the number of terminals is rounded up. In this case, each terminal can be assigned the same number (one or more). Therefore, the resource block group can be preferentially allocated to the terminal with the highest priority of the scheduling priority, thereby improving the resource allocation efficiency and reducing the number of signaling bits to reduce the signaling overhead.
  • the number of the terminal and the terminal that need to be scheduled are determined according to the CSI information of the broadband in the working bandwidth fed back by the terminal on the PUSCH and the throughput of the terminal.
  • the CSI (Channel State Information) information of the broadband and the throughput of the terminal in the working bandwidth fed back by the terminal on the PUSCH (Physical Uplink Shared Channel) are preferably terminals.
  • the recent throughput determines the number of terminals and terminals that need to be scheduled, and then determines the target resource block group size.
  • the resource block group can be preferentially allocated to the top priority of the scheduling priority, thereby improving resource allocation efficiency and reducing The number of signaling bits to reduce signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block start point or a resource block start point and an interval, The size of the interval is proportional to the resource block group size and the number of the terminals that need to be scheduled; and the plurality of the resource block group size selection values are notified to the terminal by using the RRC signaling. And notifying the terminal by the target resource block group size and the allocation information of the resource block group by using resource allocation field bits in the DCI signaling.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the target resource block group size can be determined by RRC signaling. Informing the terminal and notifying the terminal of the allocation information of the resource block group by DCI signaling, or informing the terminal of the selection value of the plurality of resource block groups by using RRC signaling, and determining the target in the selection value of the plurality of resource block groups
  • the resource block group size and the allocation information of the resource block group are notified to the terminal through the DCI signaling, so that the terminal knows the resource block group allocated thereto, wherein the resource block group allocation information includes but is not limited to The specific location of the resource block group; or the starting point of the resource block, for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can be made.
  • the resource block group assigned to it explicitly; or the resource block start and interval, such as type 2 distributed resource allocation mode, when more than needed
  • the resource block start and interval such as type 2 distributed resource allocation mode
  • FIG. 6 shows a block diagram of an indication device for resource allocation of an LTE system in an unlicensed frequency band, in accordance with an embodiment of the present invention.
  • the pointing device 600 for the resource allocation of the LTE system in the unlicensed band is used by the base station, and includes: a first determining module 602, configured to determine that the LTE system is in the The working bandwidth of the unlicensed band; the adjusting module 604, configured to adjust a resource block group size and/or a resource block group size selection value corresponding to the working bandwidth; and a second determining module 606, configured to adjust the The resource block group size and/or the resource block group size selection value determines the target resource block group size; the indication module 608 is configured to use the target signaling group group size and the resource block group allocation information by target signaling The terminal is informed to assign one or more resource block groups to the terminal.
  • the resource block group size and/or the resource block group size corresponding to the working bandwidth of the LTE system are adjusted, and the adjusted resource block group size is corresponding according to the working bandwidth.
  • the candidate value of the resource block group size determines the target resource block group size that needs to be notified to the terminal finally, and informs the terminal of the target resource block group size and the resource block group allocation information by target (designated) signaling, so as to achieve
  • the terminal allocates the corresponding resource block, so that the terminal can allocate resources through multiple allocation modes, and can effectively adjust the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth on the unlicensed band.
  • the number of bits occupied by the resource allocation domain in the target signaling is reduced, thereby reducing signaling overhead.
  • the adjustment module 604 is specifically configured to: increase the resource block group size corresponding to the working bandwidth; or increase the resource block group size corresponding to the working bandwidth. And setting a plurality of selection values of the resource block group size corresponding to the working bandwidth; or setting a plurality of selection values of the resource block group size corresponding to the working bandwidth.
  • the solution 1 increase The size of the resource block group corresponding to the working bandwidth, for example, for the resource allocation mode of type 0, the resource block group size corresponding to the working bandwidth of the 50 RB before the unadjusted is 3 RBs, and 17 bits are required for resource allocation indication, if the resource allocation is increased by 50 RBs
  • the resource block group size corresponding to the working bandwidth is adjusted to 6 RB, and the number of bits required for resource allocation is directly reduced.
  • the signaling overhead is obviously reduced, and of course, it can be increased according to other ratios.
  • Option 2 setting a plurality of resource block group size selection values corresponding to the working bandwidth, for example, the operating bandwidth of the 50 RB before the adjustment.
  • the selection value of the corresponding resource block group size is only one 3 RB, and the available value of the resource block group size corresponding to the adjusted 50 RB working bandwidth may have multiple selection values of 6 RB, 7 RB, and 8 RB, and simultaneously increase each
  • the resource block group size of the resource block group size (for example, 3 RB before adjustment, 6 RB, 7 RB, and 8 RB after adjustment), obviously can further reduce signaling overhead, and resource blocks
  • the ratio of the number of the selection values of the group size and the size of the resource block group can be set as needed; scheme 3: setting a plurality of selection values of the resource block group size corresponding to the working bandwidth, for example, for the distribution of type 2 For the resource allocation mode, the candidate value of the resource block group size corresponding to the working bandwidth of the 50 RB before the adjustment is only one 3 RB, and the available value of the resource block
  • the resource block group size and/or the resource block group size selection value corresponding to the working bandwidth the number of bits occupied by the resource allocation domain in the target signaling is reduced on the unlicensed band, thereby reducing signaling overhead and passing
  • the above adjustment may allocate multiple resource block groups for each terminal.
  • the type 0, type 1, and type 2 centralized allocation modes it is preferable to select a larger resource block group size among the plurality of resource block group size selection values corresponding to the working bandwidth, and in the type 2 distributed allocation mode.
  • the smaller the resource block group size of the plurality of resource block group sizes corresponding to the working bandwidth is selected, but it should be noted that it is only a preferred embodiment, but is not limited thereto, and may be adjusted as needed. .
  • the adjustment module 604 specifically includes: a third determining module 6042, configured to determine the number of the terminals that need to be scheduled; and a calculating module 6044, configured to use the working bandwidth and the terminal according to the The number of resource block groups is determined, wherein the resource block group size is proportional to the total number of resource blocks of the working bandwidth and inversely proportional to the number of terminals.
  • the resource block group size corresponding to the working bandwidth of the LTE system in the unlicensed band may be adjusted according to the number of terminals that need to be scheduled in the uplink and downlink, and the resource block group size and the working bandwidth are specifically determined.
  • the total number of resource blocks is proportional to the number of terminals and the number of terminals
  • the quotient of the total number of resource blocks and the number of terminals is rounded up.
  • the same number (one or more) of resource block groups can be allocated for each terminal, so that The resource block group is preferentially allocated for the terminal with the highest priority of the scheduling priority, thereby improving the resource allocation efficiency and reducing the number of signaling bits to reduce the signaling overhead.
  • the third determining module 6044 is specifically configured to: determine, according to the CSI information of the broadband in the working bandwidth that the terminal feeds back on the PUSCH, and the throughput of the terminal, The number of the terminal and the terminal.
  • the CSI (Channel State Information) information of the broadband and the throughput of the terminal in the working bandwidth fed back by the terminal on the PUSCH (Physical Uplink Shared Channel) are preferably terminals.
  • the recent throughput determines the number of terminals and terminals that need to be scheduled, and then determines the target resource block group size.
  • the resource block group can be preferentially allocated to the top priority of the scheduling priority, thereby improving resource allocation efficiency and reducing The number of signaling bits to reduce signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block group start point or a resource block group start point and An interval, where the size of the interval is proportional to the resource block group size and the number of the terminals that need to be scheduled; and the indication module is specifically configured to: use the RRC signaling to multiple the resource blocks The candidate value of the group size is informed to the terminal; and the target resource block group size and the allocation information of the resource block group are notified to the terminal by resource allocation field bits in the DCI signaling.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the target resource block group size can be determined by RRC signaling. Informing the terminal and notifying the terminal of the allocation information of the resource block group by DCI signaling, or informing the terminal of the selection value of the plurality of resource block groups by using RRC signaling, and determining the target in the selection value of the plurality of resource block groups
  • the resource block group size and the allocation information of the resource block group are notified to the terminal through the DCI signaling, so that the terminal knows the resource block group allocated thereto, wherein the resource block group allocation information includes but is not limited to : the specific location of the resource block group; or the starting point of the resource block, for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource is The block group size and the starting point of the resource block are informed to the terminal, so that the terminal can explicitly know
  • FIG. 7 is a flow chart showing a method for indicating resource allocation of an LTE system in an unlicensed frequency band according to another embodiment of the present invention.
  • a method for indicating resource allocation of an LTE system in an unlicensed band includes: Step 702: Receive target signaling from a base station; Step 704, according to Decoding the target resource block group size and resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, wherein the target resource block group size is according to the adjusted non- The resource block group size corresponding to the working bandwidth of the licensed band and/or the candidate value of the resource block group size are determined to determine one or more resource block groups allocated by the base station to the terminal.
  • the technical solution by receiving the target signaling from the base station, acquiring the target resource block group size and the resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, and determining the one or the allocation of the base station to the terminal. a plurality of resource block groups, wherein the resource block group size corresponding to the working bandwidth and/or the resource block group size may be adjusted, and the target resource block group size is corresponding to the adjusted working bandwidth of the unlicensed band
  • the resource block group size and/or the resource block group size are selected to effectively reduce the number of bits occupied by the resource allocation field in the target signaling on the unlicensed band, thereby reducing signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block group start point or a resource block group start point and An interval, wherein the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the allocation information of the resource block group includes but is not limited to: a resource block group. Specific location; or resource block start point, for example, for type 2 distributed resource allocation mode, when the interval is the resource block group Hour, the target resource block group size and the resource block start point are informed to the terminal, so that the terminal can clearly know the resource block group allocated to it; or the resource block start point and interval, such as type 2 distributed resource allocation mode, when needed
  • the resource block group is allocated to two terminals, and the interval is not equal to the resource block group size, the interval needs to be indicated, where the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the method further includes: feeding back, to the base station, the CSI information of the broadband in the working bandwidth on the PUSCH, where the base station allocates one or more resource block groups to the terminal; Receiving, by the RRC signaling, the candidate value of the plurality of resource block group sizes corresponding to the working bandwidth, and receiving the target resource block group sent by the base station by using DCI signaling a size and allocation information of the resource block group; determining, according to the plurality of resource block group size selection values, the target resource block group size, and the resource block group allocation information, that the base station allocates the terminal One or more resource block groups.
  • the CSI (Channel State Information) information of the wideband in the working bandwidth fed back to the base station on the PUSCH (Physical Uplink Shared Channel) is used by the base station to combine the terminal according to the CSI information.
  • Throughput preferentially for the terminal's recent throughput, assigning one or more resource block groups to the terminal; and obtaining the target resource block group size and receiving the received data through the received RRC signaling from the base station.
  • the DCI signaling of the base station acquires the allocation information of the resource block group, or acquires the candidate value of the multiple resource block groups by using the received RRC signaling from the base station, and acquires the target resource block group by using the received DCI signaling from the base station.
  • the allocation information of the size and the resource block group and further determining, according to the candidate value of the plurality of resource block groups, the target resource block group size, and the allocation information of the resource block group, the base station allocates one or more resource block groups to the terminal, so that Realizing the priority allocation of resource block groups for the terminals with the highest priority of scheduling priority, thereby improving resource allocation efficiency and reducing the number of letters Number of bits, in order to reduce signaling overhead.
  • FIG. 8 is a block diagram showing a pointing device for resource allocation of an LTE system in an unlicensed band according to another embodiment of the present invention.
  • a pointing device 800 for resource allocation in an unlicensed frequency band of an LTE system is used for a terminal, including: a receiving module 802, configured to receive target signaling from a base station; a module 804, configured to acquire and perform according to the target signaling a target resource block group size and a resource block group allocation information corresponding to an operating bandwidth of the unlicensed band of the LTE system, where the target resource block group size is based on the adjusted resource corresponding to the working bandwidth of the unlicensed band
  • An alternative value of block group size and/or resource block group size is determined to determine one or more resource block groups that the base station allocates for the terminal.
  • the technical solution by receiving the target signaling from the base station, acquiring the target resource block group size and the resource block group allocation information corresponding to the working bandwidth of the LTE system in the unlicensed frequency band, and determining the one or the allocation of the base station to the terminal. a plurality of resource block groups, wherein the resource block group size corresponding to the working bandwidth and/or the resource block group size may be adjusted, and the target resource block group size is corresponding to the adjusted working bandwidth of the unlicensed band.
  • the resource block group size and/or the resource block group size are selected to effectively reduce the number of bits occupied by the resource allocation field in the target signaling on the unlicensed band, thereby reducing signaling overhead.
  • the target signaling includes: RRC signaling and DCI signaling;
  • the allocation information of the resource block group includes: a location of a resource block group or a resource block group start point or a resource block group start point and An interval, wherein the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the target signaling includes, but is not limited to, RRC (Radio Resource Control) signaling and DCI (Downlink Control Information) signaling
  • the allocation information of the resource block group includes but is not limited to: a resource block group.
  • the specific location; or the starting point of the resource block for example, for the distributed resource allocation mode of type 2, when the interval is the resource block group size, the target resource block group size and the starting point of the resource block are notified to the terminal, so that the terminal can clearly know the allocation to The resource block group; or the resource block start and interval, such as the distributed resource allocation mode of type 2, when it is required to allocate more than two resource block groups to more than two terminals, and the interval is not equal to the resource block group size, then An indication interval, wherein the size of the interval is proportional to the resource block group size and the number of terminals that need to be scheduled.
  • the method further includes: a sending module 806, configured to feed back, to the base station, the CSI information of the broadband in the working bandwidth on the PUSCH, where the base station allocates one or more
  • the receiving module 802 is further configured to: receive an optional value of a plurality of resource block group sizes corresponding to the working bandwidth sent by the base station by using RRC signaling; and receive the The target resource sent by the base station by means of DCI signaling a source block group size and allocation information of the resource block group;
  • the acquiring module is specifically configured to: select a value according to the multiple resource block group size, the target resource block group size, and the resource block group
  • the allocation information determines one or more resource block groups allocated by the base station to the terminal.
  • the CSI (Channel State Information) information of the wideband in the working bandwidth fed back to the base station on the PUSCH (Physical Uplink Shared Channel) is used by the base station to combine the terminal according to the CSI information.
  • Throughput preferentially for the terminal's recent throughput, assigning one or more resource block groups to the terminal; and obtaining the target resource block group size and receiving the received data through the received RRC signaling from the base station.
  • the DCI signaling of the base station acquires the allocation information of the resource block group, or acquires the candidate value of the multiple resource block groups by using the received RRC signaling from the base station, and acquires the target resource block group by using the received DCI signaling from the base station.
  • the allocation information of the size and the resource block group and further determining, according to the candidate value of the plurality of resource block groups, the target resource block group size, and the allocation information of the resource block group, the base station allocates one or more resource block groups to the terminal, so that Realizing the priority allocation of resource block groups for the terminals with the highest priority of scheduling priority, thereby improving resource allocation efficiency and reducing the number of letters Number of bits, in order to reduce signaling overhead.
  • Figure 9 shows a block diagram of a base station in accordance with one embodiment of the present invention.
  • a base station 900 includes: the indication device 600 for resource allocation of an LTE system of an base station 900 in an unlicensed frequency band according to any one of the foregoing technical solutions, and therefore, The base station 900 has all the beneficial effects of the indication device 600 for resource allocation of the LTE system of the base station 900 in the unlicensed frequency band according to any one of the foregoing technical solutions, and details are not described herein again.
  • Figure 10 shows a block diagram of a terminal in accordance with one embodiment of the present invention.
  • the terminal 1000 includes: the indication device 800 for resource allocation of an LTE system of the terminal 1000 in an unlicensed frequency band according to any one of the foregoing technical solutions, and therefore, The terminal 1000 has all the beneficial effects of the indication device 800 for resource allocation of the LTE system of the terminal 1000 in the unlicensed frequency band according to any one of the foregoing technical solutions, and details are not described herein again.

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Abstract

La présente invention concerne un procédé d'indication d'attribution de ressources dans une bande de fréquences sans licence pour un système LTE, un dispositif d'indication d'attribution de ressources dans la bande de fréquences sans licence pour le système LTE, une station de base, et un terminal. Le procédé d'indication à utiliser dans la station de base comprend les étapes suivantes : déterminer une largeur de bande de travail du système LTE dans la bande de fréquences sans licence ; régler une taille de groupe de blocs de ressources et/ou une valeur candidate de taille de groupe de blocs de ressources correspondant à la largeur de bande de travail ; déterminer une taille de groupe de blocs de ressources cible en fonction de la taille de groupe de blocs de ressources réglée et/ou de la valeur candidate de taille de groupe de blocs de ressources réglée ; et notifier au terminal la taille de groupe de blocs de ressources cible et des informations d'attribution de groupes de blocs de ressources par une signalisation de cible, ce qui attribue un ou plusieurs groupes de blocs de ressources au terminal. La solution technique de la présente invention réduit efficacement le nombre de bits sur la bande de fréquences sans licence occupée par un domaine d'attribution de ressources dans une signalisation de DCI, ce qui réduit le temps système de signalisation.
PCT/CN2015/088468 2015-06-30 2015-08-30 Procédé d'indication et dispositif d'indication pour l'attribution de ressources, station de base, et terminal WO2017000376A1 (fr)

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