WO2018068640A1 - 一种信道资源分配方法和装置、计算机存储介质 - Google Patents

一种信道资源分配方法和装置、计算机存储介质 Download PDF

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Publication number
WO2018068640A1
WO2018068640A1 PCT/CN2017/103677 CN2017103677W WO2018068640A1 WO 2018068640 A1 WO2018068640 A1 WO 2018068640A1 CN 2017103677 W CN2017103677 W CN 2017103677W WO 2018068640 A1 WO2018068640 A1 WO 2018068640A1
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Prior art keywords
terminal
channel
value
transmission information
channel state
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PCT/CN2017/103677
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English (en)
French (fr)
Inventor
徐龙
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中兴通讯股份有限公司
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Priority to EP17860816.2A priority Critical patent/EP3528568A4/en
Publication of WO2018068640A1 publication Critical patent/WO2018068640A1/zh

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    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • 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

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a channel resource allocation method and apparatus, and a computer storage medium.
  • LTE Long Term Evolution
  • MTC Machine Type Communication
  • M2M Machine to Machine
  • CAT.M Type M
  • LTE Standard Release 13 Release 13
  • Repeated transmission is the basic technology for enhanced coverage of MTC terminals, and the combined gain is obtained by repeated transmission to achieve the purpose of enhanced coverage. Repeated transmission is an effective means of enhancing coverage.
  • the channel can be enabled to carry a higher level modulation coding scheme, or a channel that cannot satisfy a certain level modulation coding scheme can carry this level of modulation and coding scheme.
  • the Physical Downlink Shared Channel (PDSCH) and the Physical Uplink Shared Channel (PUSCH) define a maximum number of repeated transmissions of 2048 times. The number of repeated transmissions is ⁇ 1, 2, 4, 8, 16, 32, 64, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048 ⁇ .
  • repeated transmission is to send the same data repeatedly N times, which is a very inefficient way of using resources. If the MTC terminal of a scenario needs to be sent 2048 times repeatedly, the same amount of data is transmitted compared to the scenario that does not need to be repeatedly transmitted, and the repeated transmission needs to occupy 2048 times of channel resources.
  • a common method for allocating channel resources to a terminal is to allocate a minimum number of channel resources according to the amount of data to be transmitted requested by the terminal, in combination with a modulation coding scheme level that the terminal can use, so that the data can be carried by the channel resources.
  • the amount is greater than or equal to the amount of data to be transmitted by the terminal.
  • the usual channel resource allocation method is not the most efficient use of channel resources. Smaller physical resources plus a greater number of repeated transmissions may use more channel resources than larger resources plus fewer repeated transmissions. For systems that need to carry massive IoT terminals, channel resources are inherently bottlenecks. How to use limited channel resources most effectively is a problem that needs to be solved.
  • the embodiments of the present invention are expected to provide a channel resource allocation method and apparatus, and a computer storage medium, which save channel resources used for repeated transmission.
  • an embodiment of the present invention provides a channel resource allocation method, where the method includes:
  • the terminal Determining at least one set of transmission information to be selected by the terminal, when the transmission information to be selected is used by the terminal, the channel state satisfies a channel condition requirement of a link where the terminal is located, and the amount of transmitted data satisfies the terminal The amount of business data to be transmitted;
  • the transmission information to be selected includes a modulation and coding mode to be selected, a number of channel resources to be selected, and a number of repeated transmissions to be selected.
  • the selecting a set of transmission information to be selected that occupies the least amount of channel resources as the transmission information used by the terminal includes:
  • a set of transmission information that minimizes the product of the number of channel resources to be selected and the number of repeated transmissions to be selected is selected as the transmission information used by the terminal.
  • the determining a channel condition of a link where the terminal is located includes:
  • the channel state value corresponding to the selected modulation and coding mode, the channel state increment value corresponding to the number of channel resources to be selected, the channel state increment value corresponding to the number of repeated transmissions to be selected, and the channel condition value satisfy a preset
  • the demand condition, and the number of channel resources to be selected can carry the amount of service data to be transmitted by the terminal.
  • the channel condition value includes at least one of a signal to interference plus noise ratio SINR value, a path loss value, and a received signal strength RSRP value;
  • the channel state value includes at least one of a SINR value, a path loss value, and an RSRP value.
  • the channel state increment value includes at least one of an SINR value, a path loss value, and an RSRP value.
  • the notifying the selected transmission information to the terminal includes:
  • an embodiment of the present invention provides a channel resource allocation apparatus, where the apparatus includes:
  • a first determining module configured to determine a channel condition of a link where the terminal is located, and an amount of service data to be transmitted by the terminal;
  • a second determining module configured to determine at least one group of transmission information to be selected by the terminal, where the channel information to be selected is used by the terminal, the channel state meets a channel condition requirement of the link where the terminal is located, and The amount of transmitted data meets the demand for the amount of service data to be transmitted by the terminal;
  • a first selection module configured to select a group of to-be-selected transmission information that occupies the least amount of channel resources as the transmission information used by the terminal;
  • the first notification module is configured to notify the terminal of the selected transmission information.
  • the transmission information to be selected includes a modulation and coding mode to be selected, a number of channel resources to be selected, and a number of repeated transmissions to be selected.
  • the first selection module is specifically configured to calculate a product of the number of channel resources to be selected and the number of repeated transmissions to be selected; and the product of the number of channel resources to be selected and the number of repeated transmissions to be selected.
  • the smallest set of transmission information is selected as the transmission information used by the terminal.
  • the first determining module is specifically configured to measure a channel condition of a link where the terminal is located, and quantize the channel condition into a channel condition value;
  • the second determining module is specifically configured to determine at least one set of modulations to be selected by the terminal a channel state value corresponding to the coding mode, a channel state increment value corresponding to the number of channel resources to be selected, and a channel state increment value corresponding to the number of repeated transmissions to be selected, so that channel state values corresponding to each group of modulation coding modes to be selected are obtained.
  • the channel state increment value corresponding to the number of channel resources to be selected, the channel state increment value corresponding to the number of repeated transmissions to be selected, and the channel condition value satisfy a preset requirement condition, and the channel to be selected is selected.
  • the number of resources can carry the amount of service data to be transmitted by the terminal.
  • the device further includes:
  • the third determining module is configured to determine a correspondence between the modulation and coding mode and the channel state value, determine a correspondence between the number of channel resources and the channel state increment value, and determine a correspondence between the number of repeated transmissions and the channel state increment value.
  • the channel condition value includes at least one of a signal to interference plus noise ratio SINR value, a path loss value, and a received signal strength RSRP value;
  • the channel state value includes at least one of a SINR value, a path loss value, and an RSRP value;
  • the channel state increment value includes at least one of an SINR value, a path loss value, and an RSRP value.
  • the first notification module is specifically configured to notify the terminal of the transmission information value used by the terminal, or notify the identifier of the transmission information used by the terminal and the incremental value of the number of repeated transmissions. To the terminal.
  • the channel resource allocation method and device and the computer storage medium provided by the embodiment of the present invention first determine a channel condition of a link where the terminal is located, and a service data quantity to be transmitted by the terminal, and then determine at least one group of transmission information to be selected by the terminal, When the terminal uses each group of transmission information to be selected to transmit data, the channel state satisfies the channel condition requirement of the link where the terminal is located, and the amount of transmission data satisfies the service data quantity requirement of the terminal to be transmitted, and the group that occupies the least amount of channel resources is used.
  • the transmission information to be selected is used as the transmission information used by the terminal and notified to the terminal, so that the total amount of channel resources used by the terminal for data transmission is minimized, and channel resources are saved.
  • FIG. 1 is a flowchart of Embodiment 1 of a channel resource allocation method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of Embodiment 1 of a channel resource allocation apparatus according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of Embodiment 2 of a channel resource allocation apparatus according to an embodiment of the present invention.
  • the channel resources are very limited. After the introduction of the MTC terminal, the huge number of terminals leads to insufficient channel resources. Since the MTC-type terminal has low requirements for real-time communication and information volume, the method of reducing bandwidth and data transmission speed can be used to reduce the channel resource requirement of the terminal. In addition, some MTC terminals have less power for communication for power saving purposes, resulting in limited transmission and reception capabilities of the terminals.
  • a repeat transmission technique is configured for the MTC class terminal.
  • Repeated transmission is the basic technology for enhanced coverage of MTC terminals, and the combined gain is obtained by repeated transmission to achieve the purpose of enhanced coverage. Repeated transmission is an effective means of enhancing coverage.
  • the channel can be enabled to carry a higher level modulation coding scheme, or a channel that cannot satisfy a certain level modulation coding scheme can carry this level of modulation and coding scheme.
  • the number of repeated transmissions can only be selected in a limited set.
  • the LTE standard Release 13 is used as an example to define a maximum number of repeated transmissions of 2048 times for the PDSCH and the PUSCH. , 2, 4, 8, 16, 32, 64, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048 ⁇ .
  • the terminal When allocating channel resources to the terminal, for the purpose of saving channel resources, first allocate a minimum number of channel resources to the terminal according to the modulation and coding mode that the terminal can use, so that the amount of data that the channel resources allocated for the terminal can bear is greater than or equal to The amount of data to be transmitted by the terminal, and then assigning the corresponding repeated transmission times to the terminal according to the requirement of the enhanced coverage of the terminal, and finally obtaining the final The various parameters used for data transmission.
  • the repeated transmission of N is equivalent to the total amount of occupied channel resources being N times the minimum number of channel resources allocated for the terminal, and therefore, the minimum number allocated to the terminal according to the current channel resource allocation manner.
  • the base station side needs to send 254 bits of data to the MTC terminal.
  • the base station side needs to send 254 bits of data to the MTC terminal.
  • MCS Modulation and Coding Scheme
  • RBs resource blocks
  • the first resource allocation scheme allocates less channel resources to the terminal
  • the second resource allocation scheme occupies less total resources after the repeated transmission is introduced.
  • only the defined number of repeated transmissions can be selected in the limited number of transmission times, and the values in the set are discontinuous, and the number of repeated transmissions is selected in the set. It may also result in wasted channel resources.
  • FIG. 1 is a flowchart of Embodiment 1 of a method for allocating a channel resource according to an embodiment of the present invention. As shown in FIG. 1 , the method provided in this embodiment includes:
  • Step S101 determining a channel condition of a link where the terminal is located and a quantity of service data to be transmitted by the terminal.
  • the channel resource allocation method provided in this embodiment determines the channel condition of the link where the terminal is located, and the amount of service data to be transmitted, and then selects a suitable transmission resource for the terminal. The total amount of channel resources used by the terminal for output transmission is minimized, and the amount of service data to be transmitted by the terminal is met.
  • the execution entity of this embodiment is a control management network element in the network, or a network element or a network function responsible for performing transmission resource management in the network.
  • the channel condition of the terminal may be measured by the terminal or measured by the base station on the network side, and at least one parameter for characterizing the channel condition of the link where the terminal is located is determined.
  • the amount of service data to be transmitted by the terminal is determined by the base station when transmitting in the downlink, and is determined by the terminal and notified to the base station on the network side during uplink transmission.
  • Step S102 determining transmission information of at least one group of the terminal to be selected, when the transmission information to be selected is used by the terminal, the channel state satisfies the channel condition requirement of the link where the terminal is located, and the amount of transmission data satisfies the terminal to be transmitted.
  • Business data volume requirements determining transmission information of at least one group of the terminal to be selected, when the transmission information to be selected is used by the terminal, the channel state satisfies the channel condition requirement of the link where the terminal is located, and the amount of transmission data satisfies the terminal to be transmitted.
  • the data transmission of the terminal needs to determine one or more transmission information to be selected for configuring the transmission resource, and each group of transmission information to be selected may be configured to the terminal, so that the terminal uses the parameters in the transmission information to be selected for data transmission.
  • each set of transmission information to be selected is used by the terminal, the channel state satisfies the channel condition requirement of the link where the terminal is located, and the amount of transmitted data satisfies the service data quantity requirement of the terminal to be transmitted.
  • the transmission information to be selected may include three parameters: a modulation and coding mode to be selected, a number of channel resources to be selected, and a number of repeated transmissions to be selected, and the number of channel resources to be selected may specifically include a code channel to be selected. Quantity. The first is the code modulation mode used by the terminal. Various communication protocols allocate different channel resource allocation modes for different code modulation modes, and then select the corresponding channel resource quantity in the optional channel resource allocation mode, and finally the root. Select the repeat transmission method as needed. After selecting the code modulation mode, the number of channel resources, and the number of repeated transmissions, these three parameters become the transmission parameters of the terminal for data transmission.
  • the terminal may select one or more combinations of transmission parameters, and the channel conditions that can be adapted by different combinations of transmission parameters may be different. Therefore, the terminal that can be determined in step S101 can be selected among the combinations of transmission parameters that are selectable by the terminal.
  • the channel conditions that can be met by different combinations of transmission parameters can be set in advance, or can be calculated according to each parameter in the transmission parameter combination.
  • the terminal modulation coding mode, the number of channel resources, and the number of repeated transmissions satisfying the channel condition requirements of the link where the terminal is located are combined as the modulation and coding mode to be selected by the terminal, the number of channel resources to be selected, and the number of repeated transmissions to be selected.
  • the modulation and coding mode to be selected by the terminal the number of channel resources to be selected, and the number of repeated transmissions to be selected, the number of channel resources must satisfy the service data quantity requirement of the terminal to be transmitted.
  • the at least one group of the transmission information to be selected by the terminal determines, by the at least one group of the transmission information to be selected by the terminal, when the transmission information to be selected is used by the terminal, the channel state satisfies the channel condition requirement of the link where the terminal is located, and the data volume is transmitted. Satisfying the amount of service data to be transmitted by the terminal, including:
  • the channel state value corresponding to the selected modulation and coding mode, the channel state increment value corresponding to the number of channel resources to be selected, the channel state increment value corresponding to the number of repeated transmissions to be selected, and the channel condition value satisfy a preset
  • the demand condition, and the number of channel resources to be selected can carry the amount of service data to be transmitted by the terminal.
  • the preset requirement condition may be preferably a channel state value corresponding to each group of the modulation and coding modes to be selected, a channel state increment value corresponding to the number of channel resources to be selected, and a channel state increase corresponding to the number of repeated transmissions to be selected.
  • the sum of the magnitudes satisfies the requirements of the channel condition values.
  • the requirement condition may not be limited to the requirement that the sum of the foregoing three meets the channel condition value, and a person skilled in the art may set the requirement condition according to an actual situation.
  • the number of repeated transmissions is the number of repeated transmissions of the base station that sends data to the terminal, and the terminal is in the repeated receiving state; and when the terminal performs uplink transmission, the terminal is in the transmitting state.
  • the number of repeated transmissions refers to the number of times the terminal repeatedly transmits data.
  • Step S103 A set of transmission information to be selected that minimizes the total amount of occupied channel resources is used as transmission information used by the terminal.
  • At least one group of transmission information to be selected is determined in step S102, and the terminal can satisfy the data transmission requirement of the terminal by using each group of transmission information to be selected for data transmission.
  • the total amount of channel resources occupied by each group of transmission information may be different.
  • a group of transmission information to be selected with the least amount of resources is selected as the channel resource quantity used by the terminal. Repeat the number of transmissions and modulation and coding.
  • the transmission information to be selected includes the modulation coding mode to be selected, the number of channel resources to be selected, and the number of repeated transmission times to be selected, in order to save channel resources, select a group of modulation codes to be selected that have the least amount of resources to be selected.
  • the mode, the number of channel resources to be selected, and the number of repeated transmissions to be selected are used as the number of channel resources used by the terminal, the number of repeated transmissions, and the modulation and coding mode.
  • the product of the number of channel resources to be selected and the number of repeated transmissions to be selected is calculated.
  • a set of to-be-selected modulation and coding modes, the number of channel resources to be selected, and the number of repeated transmissions to be selected, which are the sum of the number of channel resources to be selected and the number of repeated transmissions to be selected, are used as the number of channel resources used by the terminal, and are repeatedly transmitted. Number of times and modulation coding.
  • Step S104 notifying the terminal of the transmission information used by the terminal.
  • the transmission information used by the terminal After the transmission information used by the terminal is determined, the transmission information used by the terminal needs to be notified to the terminal, so that the terminal uses these parameters for data transmission.
  • the transmission information to be selected includes the modulation and coding mode used by the terminal, the number of channel resources, and the number of repeated transmissions, the modulation coding mode, the number of channel resources, and the weight used by the terminal are determined. After the number of retransmissions, the terminal needs to notify the terminal of the modulation and coding mode, the number of channel resources, and the number of repeated transmissions used by the terminal, so that the terminal uses these parameters for data transmission.
  • the channel resource allocation method provided by the embodiment of the present invention first determines the channel condition of the link where the terminal is located and the amount of service data to be transmitted by the terminal, and then determines the transmission information to be selected by at least one group of terminals, and the terminal uses each group to be selected.
  • the transmission information transmits data
  • the channel state satisfies the channel condition requirement of the link where the terminal is located, and the transmission data amount satisfies the service data quantity requirement of the terminal to be transmitted, and a set of transmission information to be selected that occupies the least amount of channel resources is used as
  • the transmission information used by the terminal is notified to the terminal, so that the total amount of channel resources used by the terminal for data transmission is minimized, and channel resources are saved.
  • the channel condition of the link on which the terminal is located can be quantized to the channel condition value by measurement.
  • the channel condition value may be any parameter value capable of reacting to channel conditions, for example, the channel condition value includes a Signal to Interference plus Noise Ratio (SINR) value, a path loss value, and a received signal strength (Reference Signal Receiving). At least one of Power, RSRP) values.
  • the channel state value includes at least one of a SINR value, a path loss value, and an RSRP value; and the channel state increment value includes at least one of a SINR value, a path loss value, and an RSRP value.
  • the channel condition value, the channel state value, and the channel state increment value need to be selected for the same type of parameter to be comparable.
  • the combination of the modulation coding mode to be selected, the number of channel resources to be selected, and the number of repeated transmission times to be selected may also correspond to a quantized channel state value, as long as it is determined whether the quantized channel state value satisfies the quantized value.
  • the need for channel condition values is sufficient.
  • the quantized channel state value and the quantized channel condition value need to be represented by the same quantization parameter, for example, both SINR values or both RSRP values.
  • the combination of the modulation coding mode to be selected by the terminal, the number of channel resources to be selected, and the number of repeated transmissions to be selected may be multiple. It takes more storage space to preset corresponding quantized channel state values for each combination. .
  • the correspondence between each modulation coding mode and the channel state value is determined in advance, and the number of channel resources is determined.
  • the correspondence between the channel state increment values determines the correspondence between the number of repeated transmissions and the channel state increment value. That is to say, how much influence each modulation coding method has on the channel state value, how much influence the number of different channel resources will have on the channel state value, and how much influence the number of different signal repetition transmissions will have on the channel state value. Then, after determining the modulation coding mode to be selected for each group, the number of channel resources to be selected, and the number of repeated transmissions to be selected, the channel state values corresponding to the parameters may be added to become each group of modulation codes to be selected.
  • the mode, the number of channel resources to be selected, and the channel state value corresponding to the number of repeated transmissions to be selected may be stored in advance, compared to the channel state value corresponding to each combination. Saves storage space.
  • the number of repeated transmissions to be selected may be selected in a preset combination of repeated transmission times, or the number of repeated transmissions to be selected may be calculated according to the influence of different repeated transmission times on channel condition requirements. Therefore, when the modulation coding mode, the number of channel resources, and the number of repeated transmissions used by the terminal are notified to the terminal, the identifier of the number of repeated transmissions in the set of repeated transmission times may be notified to the terminal; or the calculated number of repeated transmissions may be directly The notification is sent to the terminal; after the number of repeated transmissions is calculated, the identifier and the incremental value of the number of repeated transmissions in the set of repeated transmission times are notified to the terminal.
  • the number of repeated transmissions in the existing repeated transmission number set is selected, only the number of repeated transmissions may be repeated.
  • the corresponding identifier in the set is sent to the terminal, and the terminal can know the number of repeated transmissions.
  • the number of repeated transmissions in the existing set of repeated transmission times may be selected instead, and the value of the number of repeated transmissions may be determined according to the channel condition requirement of the link where the terminal is located in step S102. If it is not in the existing set of repeated transmission times, then it is necessary to notify the terminal of the value of the number of repeated transmissions, for example, the number of repeated transmissions is 1058 times.
  • the terminal may also be notified of one identifier and repeated transmission in the set of repeated transmission times.
  • the increment value of the number of times is used to reduce the amount of data notified to the terminal.
  • the number of repeated transmissions is 1058 times, and the identifier corresponding to 1536 times of the set of repeated transmission times may be sent to the terminal plus the increment value of 22 times.
  • the downlink coding information can be used to notify the terminal of the modulation and coding scheme, the number of channel resources, and the number of repeated transmissions used by the terminal.
  • DCI Downlink Control Information
  • the modulation coding mode, the number of channel resources, and the number of repeated transmissions used by the terminal may be carried in other available channels or information and sent to the terminal.
  • FIG. 2 is a schematic structural diagram of Embodiment 1 of a channel resource allocation apparatus according to an embodiment of the present invention. As shown in FIG. 2, the channel resource allocation apparatus provided in this embodiment includes:
  • the first determining module 21 is configured to determine a channel condition of a link where the terminal is located and an amount of service data to be transmitted by the terminal.
  • the second determining module 22 is configured to determine at least one set of transmission information to be selected by the terminal, where the channel state to be selected is used by the terminal, and the channel state meets a channel condition requirement of the link where the terminal is located, And the amount of transmitted data meets the demand for the amount of service data to be transmitted by the terminal.
  • the first selection module 23 is configured to select a group of transmission information to be selected that has the least amount of occupied channel resources as the transmission information used by the terminal.
  • the first notification module 24 is configured to notify the terminal of the selected transmission information.
  • the channel resource allocation apparatus provided in this embodiment is used to implement the technical solution of the channel resource allocation method shown in FIG. 1 , and the implementation principle and technical effects thereof are similar, and details are not described herein again. ,
  • the transmission information to be selected includes a modulation and coding mode to be selected, a number of channel resources, and a number of repeated transmissions.
  • the first selection module 23 is specifically configured to calculate a product of the number of channel resources to be selected and the number of repeated transmissions to be selected; the number of channel resources to be selected. A set of transmission information having the smallest product of the number of repeated transmissions to be selected is selected as the transmission information used by the terminal.
  • the first determining module 21 is configured to measure a channel condition of a link where the terminal is located, and quantize the channel condition into a channel condition value;
  • the determining module 22 is configured to determine a channel state value corresponding to the modulation coding mode of the at least one group of the terminal, a channel state increment value corresponding to the number of channel resources to be selected, and a channel corresponding to the number of repeated transmissions to be selected.
  • the state increment value is such that the sum of the channel state value corresponding to the modulation coding mode to be selected, the channel state increment value corresponding to the number of channel resources to be selected, and the channel state increment value corresponding to the number of repeated transmission times to be selected are satisfied.
  • the channel condition value is required, and the number of channel resources to be selected can carry the amount of service data to be transmitted by the terminal.
  • FIG. 3 is a schematic structural diagram of Embodiment 2 of a channel resource allocation apparatus according to an embodiment of the present invention. As shown in FIG. 3, the channel resource allocation apparatus provided in this embodiment further includes:
  • the third determining module 31 is configured to determine a correspondence between the modulation and coding mode and the channel state value, determine a correspondence between the number of channel resources and the channel state increment value, and determine a correspondence between the number of repeated transmissions and the channel state increment value.
  • the channel condition value includes at least one of a SINR value, a path loss value, and an RSRP value; and correspondingly, the channel state value includes an SINR value. At least one of a path loss value and an RSRP value; the channel state increment value includes at least one of a SINR value, a path loss value, and an RSRP value.
  • the first notification module 24 is specifically configured to notify the terminal of the transmission information value used by the terminal; or transmit the terminal. The identification of the information and the incremental value of the number of repeated transmissions are notified to the terminal.
  • the first notification module 24 is specifically configured to notify the terminal of the selected transmission information by using DCI.
  • each unit in the channel resource allocation apparatus may be implemented by a central processing unit (CPU, Central Processing) located in the channel resource allocation apparatus.
  • CPU Central Processing
  • Unit or a Micro Processor Unit (MPU), or a Digital Signal Processor (DSP), or a Field Programmable Gate Array (FPGA).
  • MPU Micro Processor Unit
  • DSP Digital Signal Processor
  • FPGA Field Programmable Gate Array
  • the channel resource allocation device may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a separate product.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium, including a plurality of instructions.
  • a computer device (which may be a personal computer, server, or network device, etc.) is caused to perform all or part of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read only memory (ROM), a magnetic disk, or an optical disk.
  • embodiments of the invention are not limited to any specific combination of hardware and software.
  • an embodiment of the present invention further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to perform a channel resource allocation method according to an embodiment of the present invention.
  • the technical solution of the embodiment of the present invention first determines the channel condition of the link where the terminal is located and the amount of service data to be transmitted by the terminal, and then determines the transmission information to be selected by at least one group of terminals, and the terminal uses each group of transmission information to be selected.
  • the channel state satisfies the channel condition requirement of the link where the terminal is located, and the amount of transmitted data satisfies the service data quantity requirement of the terminal to be transmitted, and a set of transmission information to be selected that occupies the least amount of channel resources is used as the terminal.
  • the information is transmitted and notified to the terminal, so that the total amount of channel resources used by the terminal for data transmission is minimized, and channel resources are saved.

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Abstract

本发明实施例公开了一种信道资源分配方法和装置、计算机存储介质，其中，信道资源分配方法包括：确定终端所处链路的信道条件和终端待传输的业务数据量；确定至少一组终端待选择的传输信息，待选择的传输信息由终端使用时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求；将占用信道资源总量最少的一组待选择的传输信息作为终端使用的传输信息；将终端使用的传输信息通知给终端。

Description

一种信道资源分配方法和装置、计算机存储介质
相关申请的交叉引用
本申请基于申请号为201610893392.8、申请日为2016年10月13日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及通信技术领域，尤其涉及一种信道资源分配方法和装置、计算机存储介质。
背景技术
随着长期演进(Long Term Evolution，LTE)技术的发展，低功率、低成本的机器类通信(Machine Type Communication，MTC)技术也逐步标准化。机器类型通信是实现机器对机器(Machine to Machine，M2M)应用，达成物联网万物互连的关键技术，在LTE标准版本13(Release13)中新定义了类型M(Category-M，CAT.M)终端的技术规范。
重复发送是MTC终端增强覆盖的基本技术，通过重复发送获得合并增益，达到增强覆盖的目的。重复发送是增强覆盖的有效手段，通过重复发送获得的增益，可以使得信道能够承载更高等级的调制编码方案，或者使不能满足某个等级调制编码方案的信道能够承载这个等级的调制编码方案。以CAT.M终端，LTE标准Release13为例，物理下行共享信道(Physical Downlink Shared Channel，PDSCH)和物理上行共享信道(Physical Uplink Shared Channel，PUSCH)定义了最大2048次的重复发送次数，可选择的重复发送次数集合为{1,2,4,8,16,32,64,128,192,256,384,512,768,1024, 1536,2048}。
从数据传输方面来看，重复发送是将相同的数据重复发送了N次，这是一种效率很低的资源使用方式。如果某场景MTC终端需要重复发送2048次，那么相对于不需要重复发送的场景来说，传输同样多的数据量，重复发送需要占用2048倍的信道资源。
目前的LTE系统中，给终端分配信道资源的通常做法是：根据终端请求的待传输数据量，结合终端能够使用的调制编码方案等级，分配最小数量的信道资源，使得这些信道资源能够承载的数据量大于或者等于终端的待传输数据量。
但是，对于MTC终端来说，增加了重复发送次数的维度之后，通常的信道资源分配方法，并不是最有效率的信道资源使用方式。较小的物理资源加上较多次数的重复发送次数，可能比较大的资源加上较少的重复发送次数使用更多的信道资源。对于需要承载海量物联网终端的系统来说，信道资源本来就是瓶颈，如何能最有效的使用有限的信道资源是需要解决的问题。
发明内容
为解决上述技术问题，本发明实施例期望提供一种信道资源分配方法和装置、计算机存储介质，节约了进行重复发送所使用的信道资源。
本发明实施例的技术方案是这样实现的：
第一方面，本发明实施例提供了一种信道资源分配方法，所述方法包括：
确定终端所处链路的信道条件和所述终端待传输的业务数据量；
确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求；
选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息；
将所选择的传输信息通知给所述终端。
在上述方案中，所述待选择的传输信息包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数。
在上述方案中，所述选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息，包括：
计算每组待选择的信道资源数量和待选择的重复发送次数之积；
将待选择的信道资源数量和待选择的重复发送次数之积最小的一组传输信息选择为所述终端使用的传输信息。
在上述方案中，所述确定终端所处链路的信道条件，包括：
测量所述终端所处链路的信道条件，将所述信道条件量化为信道条件值；
所述确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求，包括：
确定至少一组所述终端待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值与所述信道条件值之间满足预设的需求条件，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
在上述方案中，所述信道条件值包括信号与干扰加噪声比SINR值、路损值、接收信号强度RSRP值中的至少一种；
相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少一 种；
所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。
在上述方案中，所述将所选择的传输信息通知给所述终端，包括：
将所述终端使用的传输信息值通知给所述终端；
或者将所述终端使用的传输信息的标识以及重复发送次数的增量值通知给所述终端。
第二方面，本发明实施例提供了一种信道资源分配装置，所述装置包括：
第一确定模块，配置为确定终端所处链路的信道条件和所述终端待传输的业务数据量；
第二确定模块，配置为确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求；
第一选择模块，配置为选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息；
第一通知模块，配置为将所选择的传输信息通知给所述终端。
在上述方案中，所述待选择的传输信息包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数。
在上述方案中，所述第一选择模块，具体配置为计算每组待选择的信道资源数量和待选择的重复发送次数之积；将待选择的信道资源数量和待选择的重复发送次数之积最小的一组传输信息选择为所述终端使用的传输信息。
在上述方案中，所述第一确定模块，具体配置为测量所述终端所处链路的信道条件，将所述信道条件量化为信道条件值；
所述第二确定模块，具体配置为确定至少一组所述终端待选择的调制 编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值与所述信道条件值之间满足预设的需求条件，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
在上述方案中，所述装置还包括：
第三确定模块，配置为确定调制编码方式与信道状态值的对应关系，确定信道资源数量与信道状态增量值的对应关系，确定重复发送次数与信道状态增量值的对应关系。
在上述方案中，所述信道条件值包括信号与干扰加噪声比SINR值、路损值、接收信号强度RSRP值中的至少一种；
相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少一种；
所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。
在上述方案中，所述第一通知模块，具体配置为将所述终端使用的传输信息值通知给所述终端；或者将所述终端使用的传输信息的标识以及重复发送次数的增量值通知给所述终端。
本发明实施例提供的信道资源分配方法和装置、计算机存储介质，首先确定终端所处链路的信道条件和所述终端待传输的业务数据量，然后确定至少一组终端待选择的传输信息，终端使用各组待选择的传输信息传输数据时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求，将占用信道资源总量最少的一组待选择的传输信息作为终端使用的传输信息并通知给终端，使得终端进行数据传输所使用的信道资源总量最少，节约了信道资源。
附图说明
图1为本发明实施例提供的信道资源分配方法实施例一的流程图；
图2为本发明实施例提供的信道资源分配装置实施例一的结构示意图；
图3为本发明实施例提供的信道资源分配装置实施例二的结构示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述。
在无线通信中，信道资源是十分有限的，引入MTC终端后，海量的终端数量导致信道资源不足。由于MTC类终端对通信的实时性和信息量的要求不高，因此，可以采用降低带宽、数据传输速度等方法减小终端对信道资源的需求。另外，部分MTC终端出于节电的目的，进行通信的功率较小，导致终端的收发能力有限。
为了提高MTC类终端的通信能力，为MTC类终端配置了重复发送技术。重复发送是MTC终端增强覆盖的基本技术，通过重复发送获得合并增益，达到增强覆盖的目的。重复发送是增强覆盖的有效手段，通过重复发送获得的增益，可以使得信道能够承载更高等级的调制编码方案，或者使不能满足某个等级调制编码方案的信道能够承载这个等级的调制编码方案。目前针对MTC终端而言，重复发送次数仅能在有限的集合中选择，以LTE标准Release13为例，为PDSCH和PUSCH定义了最大2048次的重复发送次数，可选的重复发送次数集合为{1,2,4,8,16,32,64,128,192,256,384,512,768,1024,1536,2048}。
在为终端分配信道资源时，出于节约信道资源的目的，首先根据终端能够使用的调制编码方式，为终端分配最小数量的信道资源，使得为终端分配的信道资源能够承载的数据量大于或等于终端待传输的数据量，然后根据终端增强覆盖的需求，为终端分配相应的重复发送次数，最终得到终 端用于进行数据传输的各种参数。但是在引入重复发送次数后，N的重复发送相当于占用的信道资源总量是为终端分配的最小数量的信道资源的N倍，因此，根据目前的信道资源分配方式为终端分配的最小数量的信道资源在进行了重复发送后，占用的信道资源总量不一定是最少的。例如基站侧需要给MTC终端发送254比特的数据，为了匹配MTC终端的信道条件，加上重复发送次数的维度之后，资源分配就有不同的方案，列举其中两种：
第一种是，终端使用调制与编码策略(Modulation and Coding Scheme，MCS)6，使用3个资源块(Resource Block，RB)可以承载256比特数据，满足终端接收254比特数据的需求，为了满足增强覆盖的需求，重复发送次数为128次。那么下行信道资源总占用量为3×128＝348个RB。第二种是终端使用MCS 3，使用5个RB可以承载256比特数据，满足终端接收254比特数据的需求，为了满足增强覆盖的需求，重复发送次数为64次。那么下行信道资源总占用量为5×64＝320个RB。
从上述实例中可以看出，虽然第一种资源分配方案为终端分配了更少的信道资源，但在引入重复发送后，第二种资源分配方案占用的资源总量却更少。另外，目前针对MTC类终端的重复发送次数，都仅能在有限的发送次数集合中选择定义好的重复发送次数，而该集合中的数值是不连续的，在该集合中选择重复发送次数，也可能导致信道资源的浪费。
图1为本发明实施例提供的信道资源分配方法实施例一的流程图，如图1所示，本实施例提供的方法包括：
步骤S101，确定终端所处链路的信道条件和终端待传输的业务数据量。
由于目前对于MTC类终端的信道资源分配方法没有考虑到终端在进行重复发送时所占用的信道资源总量，导致为终端分配信道资源的方案并不是最优选的。因此，本实施例提供的信道资源分配方法，确定终端所处链路的信道条件了待传输的业务数据量，然后为终端选择适合的传输资源， 使得终端进行输出传输所使用的信道资源总量最少，并且满足终端待传输的业务数据量需求。
本实施例的执行主体为网络中的控制管理网元，或者在网络中负责进行传输资源管理的网元或网络功能。首先需要确定终端所处链路的信道条件，以及终端待传输的业务数据量。由于终端进行数据传输时分为发送和接收两种情况，发送和接收所使用的信道资源可能不同，因此在确定终端所处链路的信道条件和终端待传输的业务数据量时，首先需要确定终端需要进行数据发送或接收。然后确定待传输数据的终端所处链路的信道条件，终端的信道条件可以由终端进行测量或者由网络侧的基站进行测量，确定至少一个用于表征终端所处链路的信道条件的参数。终端待传输的业务数据量在下行发送时由基站确定，在上行发送时由终端确定并通知给网络侧的基站。
步骤S102，确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由终端使用时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求。
终端进行数据传输需要确定一个或多个用于配置传输资源的待选择的传输信息，每组待选择的传输信息都可以配置给终端，使终端使用待选择的传输信息中的参数进行数据传输。每组待选择的传输信息由终端使用时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求。
具体地，待选择的传输信息可以包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数三个参数，而待选择的信道资源数量具体可以包括待选择的码道数量。第一为终端使用的编码调制方式，各种通信协议为不同的编码调制方式分配了不同的可选信道资源分配方式，然后在可选的信道资源分配方式中选择相应的信道资源数量，最后根 据需要选择重复发送方式。在选择了编码调制方式、信道资源数量和重复发送次数后，这三个参数就成为终端进行数据传输的传输参数。终端可选的传输参数组合可能包括一种或多种，不同的传输参数组合能够适应的信道条件可能不同，因此，可以在终端可选的传输参数组合中选择能够满足步骤S101中确定的终端所处链路的信道条件的传输参数组合。不同的传输参数组合能够满足的信道条件可以预先设置，也可以根据传输参数组合中的各参数进行计算得出。将满足终端所处链路的信道条件要求的终端调制编码方式、信道资源数量和重复发送次数组合作为终端待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数。另外，终端待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数组合中，信道资源数量要能够满足终端待传输的业务数据量要求。
并且，所述确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求，包括：
确定至少一组所述终端待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值与所述信道条件值之间满足预设的需求条件，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
具体地，预设的需求条件可以优选为每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值之和满足所述信道条件值的需求。可以理解地，本实施例中，需求条件也可以不限于上述三者之和满足所述信道条件值的需求，本领域技术人员可以根据实际情况对需求条件进行设定。
需要说明的是，在终端进行下行传输时，终端处于接收状态，重复发送次数是指向终端发送数据的基站的重复发送次数，终端处于重复接收状态；而在终端进行上行传输时，终端处于发送状态，重复发送次数是指终端重复发送数据的次数。
步骤S103，将占用信道资源总量最少的一组待选择的传输信息作为终端使用的传输信息。
在步骤S102中确定了至少一组待选择的传输信息，终端使用各组待选择的传输信息进行数据传输都能够满足终端的数据传输需求。但各组待选择的传输信息所占用的信道资源总量可能不尽相同，为了节约信道资源，再次选择占用资源总量最少的一组待选择的传输信息作为所述终端使用的信道资源数量、重复发送次数和调制编码方式。
当待选择的传输信息包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数组合时，为了节约信道资源，再次选择占用资源总量最少的一组待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数作为所述终端使用的信道资源数量、重复发送次数和调制编码方式。
具体而言，就是计算每组待选择的信道资源数量和待选择的重复发送次数之积。将待选择的信道资源数量和待选择的重复发送次数之积最小的一组待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数作为终端使用的信道资源数量、重复发送次数和调制编码方式。
步骤S104，将终端使用的传输信息通知给终端。
在确定了终端使用的传输信息后，需要将终端使用的传输信息通知给终端，使终端使用这些参数进行数据传输。
当待选择的传输信息包括终端使用的调制编码方式、信道资源数量和重复发送次数，则在确定了终端使用的调制编码方式、信道资源数量和重 复发送次数后，需要将终端使用的调制编码方式、信道资源数量和重复发送次数通知给终端，使终端使用这些参数进行数据传输。
本发明实施例提供的信道资源分配方法，首先确定终端所处链路的信道条件和所述终端待传输的业务数据量，然后确定至少一组终端待选择的传输信息，终端使用各组待选择的传输信息传输数据时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求，将占用信道资源总量最少的一组待选择的传输信息作为终端使用的传输信息并通知给终端，使得终端进行数据传输所使用的信道资源总量最少，节约了信道资源。
在图1所示实施例中，终端所处链路的信道条件，可以通过测量将信道条件量化为信道条件值。信道条件值可以是任一种能够反应信道条件的参数值，例如信道条件值包括信号与干扰加噪声比(Signal to Interference plus Noise Ratio，SINR)值、路损值、接收信号强度(Reference Signal Receiving Power，RSRP)值中的至少一种。相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少一种；所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。这里，信道条件值、信道状态值以及信道状态增量值需要选用同一种类型的参数才具有可比性。
而步骤S102中，每组终端待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数组合也可以对应一个量化的信道状态值，只要判断量化的信道状态值是否满足量化的信道条件值的需求即可。量化的信道状态值和量化的信道条件值需要以相同的量化参数表示，例如均为SINR值或均为RSRP值。由于终端可能的待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数的组合可能有多种，为每种组合预先设置对应的量化的信道状态值需要较多的存储空间。因此，还以为预先确定每种调制编码方式与信道状态值的对应关系，确定信道资源数量与 信道状态增量值的对应关系，确定重复发送次数与信道状态增量值的对应关系。也就是确定每种调制编码方式会对信道状态值产生多少影响，确定不同的信道资源数量会对信道状态值产生多少影响，确定不同的信重复发送次数会对信道状态值产生多少影响。那么在确定每组待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数后，可以将各参数所对应的信道状态值相加，即可成为每组待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数对应的信道状态值。这样只要预先存储各待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数对应的信道状态值或信道状态增量值即可，相比于存储各组合对应的信道状态值节约了存储空间。
在图1所示实施例中，待选择的重复发送次数可以在预设好的重复发送次数组合中选择，也可以根据不同的重复发送次数对信道条件要求的影响计算待选择的重复发送次数。因此，在将终端使用的调制编码方式、信道资源数量和重复发送次数通知给终端时，可以将重复发送次数在重复发送次数集合中的标识通知给终端；也可以将计算出的重复发送次数直接通知给终端；还可以在计算出重复发送次数后，将重复发送次数在重复发送次数集合中的标识和增量值通知给终端。由于在目前的重复发送次数集合中，仅有不连续的有限个重复发送次数值，因此，若选择使用现有的重复发送次数集合中的重复发送次数，可以仅将重复发送次数在重复发送次数集合中对应的标识发送给终端，终端即可获知重复发送次数。为了进一步节约信道资源，还可以选择不使用现有的重复发送次数集合中的重复发送次数，可以在步骤S102中根据终端所处链路的信道条件需求，确定重复发送次数的值，这个值可以不在现有的重复发送次数集合中，那么就需要将重复发送次数值通知给终端，例如重复发送次数为1058次。在确定重复发送次数后，还可以向终端通知重复发送次数集合中的一个标识与重复发送 次数增量值，以减少向终端通知的数据量，例如重复发送次数为1058次，可以向终端发送重复发送次数集合中1536次所对应的标识加上增量值22次。
另外，可以通过下行控制信息(Downlink Control Information，DCI)将终端使用的调制编码方式、信道资源数量和重复发送次数通知给终端。当然，还可以将终端使用的调制编码方式、信道资源数量和重复发送次数承载在其他可以使用的信道或信息中发送给终端。
图2为本发明实施例提供的信道资源分配装置实施例一的结构示意图，如图2所示，本实施例提供的信道资源分配装置包括：
第一确定模块21，配置为确定终端所处链路的信道条件和所述终端待传输的业务数据量。
第二确定模块22，配置为确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求。
第一选择模块23，配置为选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息。
第一通知模块24，配置为将所选择的传输信息通知给所述终端。
本实施例提供的信道资源分配装置用于实现图1所示信道资源分配方法的技术方案，其实现原理和技术效果类似，此处不再赘述。、
在一实施方式中，在图2所示实施例中，所述待选择的传输信息包括待选择的调制编码方式、信道资源数量和重复发送次数。
在一实施方式中，在图2所示实施例中，第一选择模块23，具体配置为计算每组待选择的信道资源数量和待选择的重复发送次数之积；将待选择的信道资源数量和待选择的重复发送次数之积最小的一组传输信息选择为所述终端使用的传输信息。
在一实施方式中，在图2所示实施例中，第一确定模块21，具体配置为测量所述终端所处链路的信道条件，将所述信道条件量化为信道条件值；所述第二确定模块22，具体配置为确定至少一组所述终端待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值之和满足所述信道条件值的需求，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
图3为本发明实施例提供的信道资源分配装置实施例二的结构示意图，如图3所示，本实施例提供的信道资源分配装置在图2的基础上，还包括：
第三确定模块31，配置为确定调制编码方式与信道状态值的对应关系，确定信道资源数量与信道状态增量值的对应关系，确定重复发送次数与信道状态增量值的对应关系。
在一实施方式中，在图2或图3所示实施例中，所述信道条件值包括SINR值、路损值、RSRP值中的至少一种；相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少一种；所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。
在一实施方式中，在图2或图3所示实施例中，第一通知模块24，具体配置为将所述终端使用的传输信息值通知给所述终端；或者将所述终端使用的传输信息的标识以及重复发送次数的增量值通知给所述终端。
在一实施方式中，在图2或图3所示实施例中，第一通知模块24，具体配置为通过DCI将所选择的传输信息通知给所述终端。
在实际应用中，所述信道资源分配装置中的各个单元所实现的功能，均可由位于信道资源分配装置中的中央处理器(CPU，Central Processing  Unit)、或微处理器(MPU，Micro Processor Unit)、或数字信号处理器(DSP，Digital Signal Processor)、或现场可编程门阵列(FPGA，Field Programmable Gate Array)等实现。
本发明实施例上述信道资源分配装置如果以软件功能模块的形式实现并作为独立的产品销售或使用时，也可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明实施例的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机、服务器、或者网络设备等)执行本发明各个实施例所述方法的全部或部分。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read Only Memory)、磁碟或者光盘等各种可以存储程序代码的介质。这样，本发明实施例不限制于任何特定的硬件和软件结合。
相应地，本发明实施例还提供一种计算机存储介质，其中存储有计算机程序，该计算机程序配置为执行本发明实施例的信道资源分配方法。
以上所述，仅为本发明的较佳实施例而已，并非用于限定本发明的保护范围。
工业实用性
本发明实施例的技术方案，首先确定终端所处链路的信道条件和所述终端待传输的业务数据量，然后确定至少一组终端待选择的传输信息，终端使用各组待选择的传输信息传输数据时，信道状态满足终端所处链路的信道条件要求，且传输数据量满足终端待传输的业务数据量需求，将占用信道资源总量最少的一组待选择的传输信息作为终端使用的传输信息并通知给终端，使得终端进行数据传输所使用的信道资源总量最少，节约了信道资源。

Claims (14)

  1. 一种信道资源分配方法，所述方法包括：
    确定终端所处链路的信道条件和所述终端待传输的业务数据量；
    确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求；
    选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息；
    将所选择的传输信息通知给所述终端。
  2. 根据权利要求1所述的方法，其中，所述待选择的传输信息包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数。
  3. 根据权利要求2所述的方法，其中，所述选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息，包括：
    计算每组待选择的信道资源数量和待选择的重复发送次数之积；
    将待选择的信道资源数量和待选择的重复发送次数之积最小的一组传输信息选择为所述终端使用的传输信息。
  4. 根据权利要求2或3所述的方法，其中，所述确定终端所处链路的信道条件，包括：
    测量所述终端所处链路的信道条件，将所述信道条件量化为信道条件值；
    所述确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求，包括：
    确定至少一组所述终端待选择的调制编码方式对应的信道状态值、 待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值与所述信道条件值之间满足预设的需求条件，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
  5. 根据权利要求4所述的方法，其中，所述信道条件值包括信号与干扰加噪声比SINR值、路损值、接收信号强度RSRP值中的至少一种；
    相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少一种；
    所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。
  6. 根据权利要求1～3任一项所述的方法，其中，所述将所选择的传输信息通知给所述终端，包括：
    将所述终端使用的传输信息值通知给所述终端；
    或者将所述终端使用的传输信息的标识以及重复发送次数的增量值通知给所述终端。
  7. 一种信道资源分配装置，所述装置包括：
    第一确定模块，配置为确定终端所处链路的信道条件和所述终端待传输的业务数据量；
    第二确定模块，配置为确定至少一组所述终端待选择的传输信息，所述待选择的传输信息由所述终端使用时，信道状态满足所述终端所处链路的信道条件要求，且传输数据量满足所述终端待传输的业务数据量需求；
    第一选择模块，配置为选择占用信道资源总量最少的一组待选择的传输信息作为所述终端使用的传输信息；
    第一通知模块，配置为将所选择的传输信息通知给所述终端。
  8. 根据权利要求7所述的装置，其中，所述待选择的传输信息包括待选择的调制编码方式、待选择的信道资源数量和待选择的重复发送次数。
  9. 根据权利要求8所述的装置，其中，所述第一选择模块，具体配置为计算每组待选择的信道资源数量和待选择的重复发送次数之积；将待选择的信道资源数量和待选择的重复发送次数之积最小的一组传输信息选择为所述终端使用的传输信息。
  10. 根据权利要求8或9所述的装置，其中，所述第一确定模块，具体配置为测量所述终端所处链路的信道条件，将所述信道条件量化为信道条件值；
    所述第二确定模块，具体配置为确定至少一组所述终端待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值和待选择的重复发送次数对应的信道状态增量值，使每组待选择的调制编码方式对应的信道状态值、待选择的信道资源数量对应的信道状态增量值、待选择的重复发送次数对应的信道状态增量值与所述信道条件值之间满足预设的需求条件，且所述待选择的信道资源数量能够承载所述终端待传输的业务数据量。
  11. 根据权利要求10所述的装置，其中，所述装置还包括：
    第三确定模块，配置为确定调制编码方式与信道状态值的对应关系，确定信道资源数量与信道状态增量值的对应关系，确定重复发送次数与信道状态增量值的对应关系。
  12. 根据权利要求10所述的装置，其中，所述信道条件值包括信号与干扰加噪声比SINR值、路损值、接收信号强度RSRP值中的至少一种；
    相应地，所述信道状态值包括SINR值、路损值、RSRP值中的至少 一种；
    所述信道状态增量值包括SINR值、路损值、RSRP值中的至少一种。
  13. 根据权利要求7～9任一项所述的装置，其中，所述第一通知模块，具体配置为将所述终端使用的传输信息值通知给所述终端；或者将所述终端使用的传输信息的标识以及重复发送次数的增量值通知给所述终端。
  14. 一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，该计算机可执行指令配置为执行权利要求1-6任一项所述的信道资源分配方法。
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