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WO2018196407A1 - Procédé d'attribution de ressources et station de base - Google Patents

Procédé d'attribution de ressources et station de base Download PDF

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Publication number
WO2018196407A1
WO2018196407A1 PCT/CN2017/117273 CN2017117273W WO2018196407A1 WO 2018196407 A1 WO2018196407 A1 WO 2018196407A1 CN 2017117273 W CN2017117273 W CN 2017117273W WO 2018196407 A1 WO2018196407 A1 WO 2018196407A1
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WIPO (PCT)
Prior art keywords
terminal
requirement
resource
csi
period
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PCT/CN2017/117273
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English (en)
Chinese (zh)
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WO2018196407A8 (fr
Inventor
廖礼宇
Original Assignee
京信通信系统（中国）有限公司
京信通信系统（广州）有限公司
京信通信技术(广州)有限公司
天津京信通信系统有限公司
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Application filed by 京信通信系统（中国）有限公司, 京信通信系统（广州）有限公司, 京信通信技术(广州)有限公司, 天津京信通信系统有限公司 filed Critical 京信通信系统（中国）有限公司
Publication of WO2018196407A1 publication Critical patent/WO2018196407A1/fr
Publication of WO2018196407A8 publication Critical patent/WO2018196407A8/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • 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
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS

Definitions

  • the present invention relates to the field of communications, and in particular, to a resource configuration method and a base station.
  • Wireless channel conditions are often constantly changing. For example, if the terminal moves from a region with good channel conditions to a region with poor channel conditions, or if the terminal moves on a street with tall buildings on both sides, the signal on the street along the direction of signal propagation will be enhanced, perpendicular to the direction of propagation. The signal on the street will be weakened.
  • the terminal can report the channel state information (CSI) to the base station, so that the base station selects a more reliable MCS and transmission mode for the terminal, and selects a better time-frequency resource to achieve Efficient data transfer.
  • CSI channel state information
  • the terminal measures the channel quality of the downlink carrier and reports the measurement result CSI.
  • CSI consists of CQI (Channel Quality Indicator), PMI (Precoding Matrix Indicator), PTI (Precoding Type Indicator), and RI (Rand Indication).
  • the time-frequency resources occupied by the CSI are controlled by the eNodeB.
  • PUCCH Physical Uplink
  • the control channel is periodically reported, and the periodic report/aperiodic report is performed by using the PUSCH (Physical Uplink Share Channel).
  • the content included in the periodic CSI report is related to the CSI reporting mode configured by the terminal.
  • LTE supports two types of periodic CSI reporting modes. For details, see 3GPP TS 36.213.
  • the eNodeB notifies the terminal whether to perform aperiodic CSI reporting by using the CSI request field of the UL grant in the DCI format 0/4 or the RAR.
  • the content included in the aperiodic CSI report is related to the CSI reporting mode configured by the terminal.
  • LTE supports three types of acyclic CSI reporting modes. For details, see Table 7.2.1-1 in 3GPP TS 36.213.
  • the terminal If the terminal is not configured to transmit both the PUSCH and the PUCCH (configured by the simultaneous PUCCH-PUSCH-r10), and the PUSCH resource is not allocated on the subframe reported by the periodic CSI, the terminal transmits the periodic CSI on the PUCCH.
  • the periodic CSI is transmitted on the PUSCH of the cell that has allocated the PUSCH resource and has the smallest ServCellIndex, and uses The same format as periodic CSI reporting based on PUCCH.
  • Aperiodic CSI can only be transmitted on the PUSCH and can be transmitted separately on the PUSCH or with other data.
  • periodic CSI reporting is generally carried on the PUCCH.
  • the number of valid bits carried on a periodic CSI resource can only reach 13 bits at most, and the actual maximum is only 11 bits for channel quality information, and the other 2 bits are reserved for HARQ-ACK information jointly encoded with channel quality information.
  • the non-periodic CSI reporting is carried on the PUSCH, and the channel quality information of any bit can be supported according to the scheduling instruction of the base station.
  • the feedback frequency is different: the periodic CSI report is reported in a fixed period, and the aperiodic CSI can be reported on demand according to the scheduling instruction, or can be reported periodically or nearly periodically.
  • the content of the subband feedback is different: for the subband reporting mode of the CSI period feedback, the terminal needs to report the wideband CQI (if there is still a need to report the wideband PMI) and the subband CQI, and the wideband CQI (and PMI) and the subband CQI It is reported in a time-sharing manner, wherein the reporting interval Np and the number of scanning times k are configured by the base station and notified to the terminal.
  • the terminal can report the sub-band and the wideband CSI at the same time.
  • the feedback overhead problem since the aperiodic CSI reporting is the base station scheduling transmission, it can be transmitted when needed, and is carried on the PUSCH with a large amount of resources, and the overhead is not a big problem.
  • the periodic CSI report will occupy the PUCCH resource. Once configured, the terminal will always occupy the resource, so there will be resource overhead.
  • the CSI physical resource allocation mode of the prior art generally calculates the CSI period suitable for the terminal according to the channel environment, further combines the load level of the current CSI resource, or combines the uplink and downlink data volume, and starts to allocate from the minimum period available, and the small period cannot be combined.
  • This method requires a fixed number of CSI resources.
  • the number of users is greater than the preset number of users, the PUCCH capacity can only be increased by increasing the CSI period.
  • the CSI period is increased, the terminal rate is decreased.
  • the CSI resources are configured with the maximum user capacity as the requirement, but in the case that the number of users does not reach the preset number of users (which often occurs), resource waste occurs.
  • the PUCCH resources are dynamically added by comparing the ACK/NACK and the SRI, and the number of unused resources in the resources reserved for the CQI and the preset threshold.
  • this method requires frequent modification of system broadcast parameters, which is complicated in implementation and affects the experience of the online terminal.
  • the current LTE/LTE-A network can support the simultaneous transmission of various services in the network due to its high rate, low delay, and all-IP.
  • Small traffic applications such as Weibo and instant messaging have the characteristics of always-on, frequent heartbeat, etc.
  • the VoLTE voice call has the characteristics of small data, periodic arrival, and delay sensitivity
  • the video service is sensitive to delay and bandwidth.
  • IoT services such as meter reading and monitoring have the characteristics of small traffic, insensitive delay, low power consumption, and so on.
  • the prior art does not take these characteristics into consideration when allocating CSI resources, and cannot reasonably allocate resources to the most needed terminals.
  • the background traffic of the existing smartphone operating system when there is no user operation, the service automatically running in the background is intermittently transmitted by the mobile client and the server with small data packets (also called heartbeat packets), and the average rate is about 5 Byte/ s ⁇ 250 Byte / s, for services like this small traffic, the base station can usually solve a heartbeat packet transmission in one scheduling, there is no need to configure periodic CSI resources for it, and the configuration period CSI will accelerate the terminal power consumption.
  • small data packets also called heartbeat packets
  • the embodiment of the present application provides a resource configuration method and a base station, which are used to solve the problem that the system resources in the system change in the system when the capacity of the terminal user changes in the system is complex, and cannot flexibly adapt to the change of the terminal user capacity in the system, resulting in the system. Waste of resources and technical problems that reduce the user experience.
  • an embodiment of the present application provides a resource configuration method, which is applied to a base station, where the method includes:
  • Determining a terminal CSI resource configuration of the terminal based on the occupancy of the periodic CSI resource and the terminal resource requirement of the terminal.
  • the configuring the periodic CSI resource according to the average value N a of the number of terminals served by the uplink service provided by the base station and the peak value N p of the number of terminals served by the uplink service provided by the base station including:
  • the terminal uplink serving uplink serving base station Based on the number of terminals of the terminal uplink serving uplink serving base station provides the service number of the average value of N a and the base peak and services provided by N p, estimated resource requirements periodic CSI accommodated terminal number N s ;
  • CSI resources of different periods are configured based on the number of CSI resources of each period.
  • the calculation formula of the N s is:
  • N s N a + ⁇ (N p -N a )
  • ⁇ is a factor that adjusts the difference between the average value N a and the peak value N p , and 0 ⁇ ⁇ ⁇ 1.
  • the terminal resource requirement is a CSI periodic resource requirement and a reporting mode requirement.
  • the number of CSI resources in each of the CSI resources of different periods is configured based on the N s; and CSI resources in different periods are configured based on the number of CSI resources in each period, including:
  • the determining, according to the terminal service QoS requirement, the terminal resource requirement of the terminal including:
  • the reporting mode requirement in the resource requirement is a broadband report.
  • the determining, according to the terminal service QoS requirement, the terminal resource requirement of the terminal including:
  • the terminal resource requirement of the terminal is determined based on the current moving speed of the terminal:
  • the terminal service QoS requirement based on a terminal cannot determine the terminal Terminal resource requirements
  • the determining, according to the current moving speed of the terminal, the terminal resource requirement of the terminal including:
  • the reporting mode requirements in the terminal resource requirements are broadband reporting and sub-band reporting.
  • the determining, according to the current moving speed of the terminal, the terminal resource requirement of the terminal including:
  • the current moving speed of the terminal is greater than or equal to the first speed threshold and less than the second speed threshold, determining that the CSI period resource requirement in the terminal resource requirement of the terminal is the CSI resource in the first period And determining that the reporting mode requirement in the terminal resource requirement of the terminal is a broadband reporting and a sub-band reporting.
  • the determining, according to the current moving speed of the terminal, the terminal resource requirement of the terminal including:
  • the reporting mode requirement in the terminal resource requirement is a broadband report.
  • the determining, according to the occupancy of the periodic CSI resource and the terminal resource requirement, the terminal CSI resource configuration of the terminal including:
  • the periodic CSI resource can meet the CSI period resource requirement in the terminal resource requirement and the reporting mode requirement in the terminal resource requirement, allocate a periodic CSI resource to the terminal.
  • the determining, according to the occupancy of the periodic CSI resource and the terminal resource requirement, the terminal CSI resource configuration of the terminal including:
  • the terminal is allocated a non-periodic CSI resource.
  • an embodiment of the present application provides a base station, where the base station includes:
  • a first configuration module configured to configure a periodic CSI resource based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station;
  • a first determining module configured to determine a terminal resource requirement of the terminal based on a QoS requirement of the terminal service when the terminal resource requirement of the terminal is determined based on a terminal service QoS requirement of the terminal;
  • a second determining module configured to determine a terminal resource requirement of the terminal based on a current mobile speed of the terminal when the terminal service resource QoS requirement based on the terminal cannot determine the terminal resource requirement of the terminal;
  • a third determining module configured to determine a terminal CSI resource configuration of the terminal, based on the occupation of the periodic CSI resource and the terminal resource requirement.
  • the first determining module includes:
  • a first estimating submodule configured, based on an average value N a of the number of terminals served by the uplink service provided by the base station, and a peak value N p of the number of terminals served by the uplink service provided by the base station, a prediction period The number of terminals that the CSI resource needs to accommodate N s ;
  • a first configuration submodule configured to configure, according to the N s , a number of CSI resources in each period of CSI resources of different periods;
  • the second configuration submodule is configured to configure different periodic CSI resources based on the number of CSI resources in each period.
  • the calculation formula of the N s is:
  • N s N a + ⁇ (N p -N a )
  • ⁇ is a factor that adjusts the difference between the average value N a and the peak value N p , and 0 ⁇ ⁇ ⁇ 1.
  • the terminal resource requirement is a CSI periodic resource requirement and a reporting mode requirement.
  • the first configuration submodule comprises a first configuration unit
  • the second configuration submodule comprises a second configuration unit:
  • the first configuration unit is configured to configure, according to the N s , a first number of CSI resources of a first period, a second number of CSI resources of a second period, and a third number of CSI resources of a third period, Wherein the first period is less than the second period and the second period is less than the third period;
  • the second configuration unit is configured to configure, according to the first number, the second number, and the third number, a first periodic CSI resource, a second periodic CSI resource, and a third periodic CSI resource.
  • the first determining module includes:
  • a first determining submodule configured to determine a CSI period resource requirement in the terminal resource requirement of the terminal as a CSI resource in the first period, if a delay-sensitive requirement exists in the QoS requirement of the terminal service, and Determining, in the terminal resource requirement of the terminal, that the reporting mode requirement is a broadband report.
  • the first determining module includes:
  • a second determining submodule configured to determine, if the terminal service QoS requirement does not have a QoS delay sensitive requirement, and the rate requirement in the terminal service QoS requirement is less than a first rate threshold, determining that the terminal does not exist Terminal resource requirements.
  • the second determining module comprises:
  • a third determining submodule configured to: if there is no QoS delay sensitive requirement in the QoS requirement of the terminal service, and the rate requirement in the QoS requirement of the terminal service is not less than a first rate threshold, the terminal service QoS based on a terminal When the requirement cannot determine the terminal resource requirement of the terminal, the terminal resource requirement of the terminal is determined based on the current moving speed of the terminal.
  • the second determining module includes:
  • a fourth determining submodule configured to determine, if the current moving speed of the terminal is less than a first speed threshold, a CSI period resource requirement in the terminal resource requirement of the terminal as a CSI resource in the second period, And determining that the reporting mode requirement in the terminal resource requirement of the terminal is a broadband reporting and a sub-band reporting.
  • the second determining module includes:
  • a fifth determining submodule configured to determine, when the current moving speed of the terminal is greater than or equal to the first speed threshold and less than a second speed threshold, determining a CSI period resource requirement in the terminal resource requirement of the terminal is The CSI resource of the first period, and the reporting mode requirement in the determining the terminal resource requirement of the terminal, are a broadband report and a sub-band report.
  • the second determining module includes:
  • a sixth determining submodule configured to determine, when the current moving speed of the terminal is greater than or equal to the second speed threshold, a CSI period resource requirement in the terminal resource requirement of the terminal is the third period
  • the CSI resource, and the reporting mode requirement in determining the terminal resource requirement of the terminal is a broadband report.
  • the third determining module includes:
  • a first allocation submodule configured to allocate a periodic CSI to the terminal if the periodic CSI resource can meet the CSI periodic resource requirement in the terminal resource requirement and the reporting mode requirement in the terminal resource requirement Resources.
  • the third determining module includes:
  • a second allocation submodule configured to allocate a non-terminal to the terminal if the periodic CSI resource cannot meet the CSI period resource requirement in the terminal resource requirement and the reporting mode requirement in the terminal resource requirement Periodic CSI resources.
  • One or more technical solutions provided in the embodiments of the present application are based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station, Configuring a periodic CSI resource; when determining a terminal resource requirement of the terminal based on a terminal service QoS requirement of a terminal, determining the terminal resource requirement based on the terminal service QoS requirement; when the terminal service QoS requirement based on a terminal is not Determining the terminal resource requirement based on the current moving speed of the terminal when determining the terminal resource requirement of the terminal; determining the terminal CSI of the terminal based on the occupancy condition of the periodic CSI resource and the terminal resource requirement Resource configuration.
  • the present invention solves the problem that the process of deploying system resources is complicated when the capacity of the terminal user changes in the system, and can flexibly adapt to the change of the terminal user capacity in the system, causing waste of system resources and technical problems of reducing user experience, at least The following technical effects are achieved: 1. Flexibly adapt to system capacity changes, simplify the deployment process of system resources, improve the effective utilization of system resources, and improve the technical effect of user experience; 2. It is not necessary to modify system information broadcast parameters, and the implementation is simple and does not affect Online user experience; 3. Fully utilize the characteristics of the periodic CSI bearer content and the aperiodic CSI bearer content, and configure the system uplink resources reasonably, so that the resources reported by the CSI can fully satisfy the user QoS requirements.
  • FIG. 1 is a flowchart of a resource configuration method according to Embodiment 1 of the present invention.
  • step S10 is a flowchart of step S10 in a resource configuration method according to Embodiment 1 of the present invention
  • FIG. 3 is a schematic diagram of a base station according to Embodiment 2 of the present invention.
  • the embodiment of the present application provides a resource configuration method and a base station, based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station, Configuring a periodic CSI resource; when determining a terminal resource requirement of the terminal based on a terminal service QoS requirement of a terminal, determining the terminal resource requirement based on the terminal service QoS requirement; when the terminal service QoS requirement based on a terminal is not Determining the terminal resource requirement based on the current moving speed of the terminal when determining the terminal resource requirement of the terminal; determining the terminal CSI of the terminal based on the occupancy condition of the periodic CSI resource and the terminal resource requirement Resource configuration.
  • a first embodiment of the present invention provides a resource configuration method, which is applied to a base station, and the method includes the following steps:
  • S10 Configuring a periodic CSI resource based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station;
  • step S10 includes, see FIG. 2:
  • the calculation formula of the N s may be:
  • N s N a + ⁇ (N p -N a )
  • ⁇ is a factor that adjusts the difference between the average value N a and the peak value N p , and 0 ⁇ ⁇ ⁇ 1.
  • N s N a
  • the number of users of the service is greater than N s , the number of users exceeding the part is supported by configuring the aperiodic CSI resources, and the system broadcast parameters need not be modified, which is simple and convenient. .
  • the terminal resource requirement is a CSI periodic resource requirement and a reporting mode requirement.
  • the periodic CSI resource is a frequency resource
  • the configured periodic CSI resources are divided into three periodic configurations: a first period, a second period, and a third period, where the first period is smaller than the second period and the second period is smaller than the third period;
  • the first period is a small period
  • the second period is a medium period
  • the third period is a large period.
  • the resource ratio of the three periodic configurations can be adjusted according to the estimated number of terminals N s that the CSI resources need to accommodate.
  • the configured periodic CSI resources can meet at least the requirements of N s .
  • the minimum value of the number of periodic CSI resources that can satisfy N s is prioritized.
  • Three kinds of cycle configuration assumed period CSI resources are 20ms, 40ms, 80ms, according to a period CSI estimated resources required to accommodate the number of terminals N s, the proportion of the allocation of resources is determined as a period of three: 1: 1, in the TDD 1UL
  • the time-frequency resource allocated to the terminal is periodically used, that is, a frequency domain CSI resource can support four terminals in a 20 ms CSI period; similarly, a frequency domain CSI resource can support respectively in 40 ms and 80 ms CSI periods.
  • the number of terminals is 8 and 16. According to the ratio of periodic resources of 1:1:1, the minimum number of CQI resources in each cycle satisfying the needs of 140 users are:
  • the number of 20ms CSI resources is Operator Represents the smallest integer greater than x;
  • the number of 40ms CSI resources is the number of 40ms CSI resources.
  • the number of 80ms CSI resources is
  • the base station configures 12 CSI periodic resources with a period of 20 ms, 6 cycles of 40 ms CSI periodic resources, and 3 cycles of 80 ms CSI periodic resources.
  • the terminal resource requirement of the terminal is PmRn, where P represents the period requirement of the terminal for the CSI resource, and m takes values of 0, 1, 2, 3, and x, respectively, indicating no demand, first period, and The second period, the third period, is not determined, wherein the first period is smaller than the second period and the second period is smaller than the third period, for example, the first period is a small period, the second period is a medium period, and the third period is Large period; R indicates the demand reported by the CSI, and n takes values of 0, 1, 2, and x, indicating no demand, broadband reporting, broadband reporting, and sub-band reporting, and is not determined.
  • step S20 when the terminal resource requirement of the terminal is determined based on the terminal service QoS requirement of the terminal, the determining the terminal resource requirement based on the terminal service QoS requirement includes:
  • the terminal resource requirement of the terminal is determined to be P1R1, indicating that the CSI resource of the first period needs to be configured for the terminal, and the reporting mode is configured as Broadband reporting.
  • the rate requirement in the terminal service QoS requirement is less than the first rate threshold, if the rate requirement in the terminal service QoS requirement is less than the first A rate threshold indicates that the CSI period resource requirement of the terminal is P0R0, indicating that it is not necessary to configure a periodic CSI resource for the terminal.
  • step S30 when the terminal resource requirement of the terminal is not determined based on the terminal service QoS requirement of the terminal, determining the terminal resource requirement based on the current moving speed of the terminal includes the following steps:
  • the periodic resource requirement is PxRx, which indicates that the CSI period resource requirement of the terminal needs to be further determined according to the current moving speed of the terminal, that is, the terminal resource requirement is determined based on the current moving speed of the terminal.
  • the service QoS delay sensitivity means that the service delay requirement is less than a threshold.
  • This delay-sensitive service requires the link to send data packets to the receiving end in time, otherwise the user experience will be poor.
  • Typical businesses include voice calls, video calls, and real-time online games.
  • the CSI resource of the first period for example, a small period, can be configured to quickly track the change of the channel.
  • configuring the broadband CSI allows the terminal to timely report the channel information of the entire frequency band, which is beneficial to the channel information. Rapid resource scheduling to reduce business latency.
  • the first rate threshold is used to distinguish between small traffic services and non-small traffic services.
  • Typical small-traffic services include background traffic for smartphone operating systems, IoT applications for meter reading, interactive content browsing, instant messaging, and online online games.
  • the periodic CSI resource is not configured, which can reduce the power consumption of the terminal, save system CSI resources, and provide more PUSCH resources for data scheduling.
  • the determining, according to the current moving speed of the terminal, the terminal resource requirement including:
  • the terminal resource requirement of the terminal is P2R2, indicating that the second periodic CSI resource needs to be configured for the terminal, and the terminal of the terminal.
  • the reporting mode requirements in the resource requirements are configured for broadband reporting and sub-band reporting;
  • the terminal resource requirement of the terminal is P1R2, indicating that a CSI of the first period needs to be configured for the terminal.
  • the resource, and the reporting mode requirement in the terminal resource requirement of the terminal are configured to be a broadband report and a sub-band report;
  • the terminal resource requirement of the terminal is P3R1, indicating that a CSI resource of a third period needs to be configured for the terminal, and the terminal
  • the reporting mode requirement in the terminal resource requirement is configured as a broadband report.
  • the first speed threshold and the second speed threshold are used to divide a mobile state of the terminal, and when the moving speed of the terminal is less than a first speed threshold, the terminal is considered to be in a static or low speed state;
  • the moving speed is greater than or equal to the first speed threshold and less than the second speed threshold, and the terminal is considered to be in a medium speed state;
  • the moving speed of the terminal is greater than or equal to the second speed threshold, and the terminal is considered to be in a high speed state.
  • the Doppler frequency shift is small, the channel correlation time is large, and the channel change of the terminal is relatively flat during the relevant time, so the medium-cycle CSI resources equivalent to the channel-related time can be configured; In the terminal, the Doppler frequency shift becomes larger, and the channel correlation time is reduced. At this time, the CSI resources of the small period are configured, and the reporting mode is configured to report the broadband and the sub-band reporting, and provide more information of the channel to the base station as much as possible.
  • the Doppler frequency shift is too large, the channel correlation time is too small, so that the periodic CSI resources cannot provide accurate channel information.
  • a large-cycle CSI resource is configured, and the reporting mode is configured as a broadband report. Basic communication quality information can be provided, and the scheduler can combine this CSI information to reserve more processing margin to ensure reliable transmission of the wireless link.
  • the terminal CSI resource configuration of the terminal is determined based on the occupancy of the periodic CSI resource and the terminal resource requirement, including:
  • the base station allocates a periodic CSI resource to the terminal, for example, The base station configures a corresponding periodic CSI resource to the terminal.
  • the base station allocates aperiodic CSI resource to the terminal. For example, the base station configures the aperiodic CSI resource corresponding to the CSI period resource requirement in the terminal resource requirement to the terminal.
  • step S40 is re-executed.
  • steps S20, S30, and S40 need to be performed again.
  • a second embodiment of the present invention provides a base station, where the base station includes:
  • the first configuration module 10 is configured to configure a periodic CSI resource based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station. ;
  • the first determining module 20 is configured to determine, according to the QoS requirement of the terminal service, the terminal resource requirement of the terminal, when the terminal resource requirement of the terminal is determined based on a terminal service QoS requirement of the terminal;
  • a second determining module 30 configured to determine, according to a terminal service requirement of the terminal, a terminal resource requirement of the terminal, based on a current mobile speed of the terminal, determining a terminal resource requirement of the terminal;
  • the third determining module 40 is configured to determine a terminal CSI resource configuration of the terminal according to the occupancy condition of the periodic CSI resource and the terminal resource requirement.
  • the first configuration module 10 includes:
  • a first estimating submodule configured, based on an average value N a of the number of terminals served by the uplink service provided by the base station, and a peak value N p of the number of terminals served by the uplink service provided by the base station, a prediction period The number of terminals that the CSI resource needs to accommodate N s ;
  • a first configuration submodule configured to configure, according to the N s , a number of CSI resources in each period of CSI resources of different periods;
  • the second configuration submodule is configured to configure different periodic CSI resources based on the number of CSI resources in each period.
  • N s N a + ⁇ (N p -N a )
  • ⁇ is a factor that adjusts the difference between the average value N a and the peak value N p , and 0 ⁇ ⁇ ⁇ 1.
  • N s N a
  • the number of users of the service is greater than N s , the number of users exceeding the part is supported by configuring the aperiodic CSI resources, and the system broadcast parameters need not be modified, which is simple and convenient. .
  • the terminal resource requirement is a CSI periodic resource requirement and a reporting mode requirement.
  • the first configuration submodule includes a first configuration unit
  • the second configuration submodule includes a second configuration unit:
  • the first configuration unit is configured to configure, according to the N s , a first number of CSI resources of a first period, a second number of CSI resources of a second period, and a third number of CSI resources of a third period, Wherein the first period is less than the second period and the second period is less than the third period;
  • the second configuration unit is configured to configure, according to the first number, the second number, and the third number, a first periodic CSI resource, a second periodic CSI resource, and a third periodic CSI resource.
  • the first period is a small period
  • the second period is a medium period
  • the third period is a large period.
  • the resource ratio of the three periodic configurations can be adjusted according to the estimated number of terminals N s that the CSI resources need to accommodate.
  • the configured periodic CSI resources can meet at least the requirements of N s .
  • the minimum value of the number of periodic CSI resources that can satisfy N s is prioritized.
  • Three kinds of cycle configuration assumed period CSI resources are 20ms, 40ms, 80ms, according to a period CSI estimated resources required to accommodate the number of terminals N s, the proportion of the allocation of resources is determined as a period of three: 1: 1, in the TDD 1UL
  • the time-frequency resource allocated to the terminal is periodically used, that is, a frequency domain CSI resource can support four terminals in a 20 ms CSI period; similarly, a frequency domain CSI resource can support respectively in 40 ms and 80 ms CSI periods.
  • the number of terminals is 8 and 16. According to the ratio of periodic resources of 1:1:1, the minimum number of CQI resources in each cycle satisfying the needs of 140 users are:
  • the number of 20ms CSI resources is Operator Represents the smallest integer greater than x;
  • the number of 40ms CSI resources is the number of 40ms CSI resources.
  • the number of 80ms CSI resources is
  • the base station configures 12 CSI periodic resources with a period of 20 ms, 6 cycles of 40 ms CSI periodic resources, and 3 cycles of 80 ms CSI periodic resources.
  • the terminal resource requirement of the terminal is PmRn, where P represents the period requirement of the terminal for the CSI resource, and m takes values of 0, 1, 2, 3, and x, respectively, indicating no demand, first period, and The second period, the third period, is not determined, wherein the first period is smaller than the second period and the second period is smaller than the third period, for example, the first period is a small period, the second period is a medium period, and the third period is Large period; R indicates the demand reported by the CSI, and n takes values of 0, 1, 2, and x, indicating no demand, broadband reporting, broadband reporting, and sub-band reporting, and is not determined.
  • the first determining module 20 includes:
  • the first determining sub-module is configured to determine that the terminal resource requirement of the terminal is P1R1, that is, that the CSI resource of the first period needs to be configured for the terminal, and the reporting mode is configured to be a broadband report.
  • the first determining module 20 further includes:
  • a second determining submodule configured to: if there is no QoS delay sensitive requirement in the terminal service QoS requirement, and then further determining whether the rate requirement in the terminal service QOS requirement is less than a first rate threshold, if the terminal service If the rate requirement in the QoS requirement is less than the first rate threshold, the terminal resource requirement of the terminal is P0R0, indicating that the periodic CSI resource does not need to be configured for the terminal.
  • the second determining module 30 includes:
  • a third determining submodule configured to: if there is no QoS delay sensitive requirement in the QoS requirement of the terminal service, and the rate requirement in the QoS requirement of the terminal service is not less than a first rate threshold, for example, the rate requirement is relatively large
  • the terminal resource requirement of the terminal is determined to be PxRx, which indicates that the terminal resource requirement of the terminal needs to be further determined according to the current moving speed of the terminal, that is, the terminal resource requirement is determined based on the current moving speed of the terminal.
  • the service QoS delay sensitivity means that the service delay requirement is less than a threshold.
  • This delay-sensitive service requires the link to send data packets to the receiving end in time, otherwise the user experience will be poor.
  • Typical businesses include voice calls, video calls, and real-time online games.
  • the CSI resource of the first period for example, a small period, can be configured to quickly track the change of the channel.
  • configuring the broadband CSI allows the terminal to timely report the channel information of the entire frequency band, which is beneficial to the channel information. Rapid resource scheduling to reduce business latency.
  • the first rate threshold is used to distinguish between small traffic services and non-small traffic services.
  • Typical small-traffic services include background traffic for smartphone operating systems, IoT applications for meter reading, interactive content browsing, instant messaging, and online online games.
  • the periodic CSI resource is not configured, which can reduce the power consumption of the terminal, save system CSI resources, and provide more PUSCH resources for data scheduling.
  • the second determining module 30 further includes:
  • a fourth determining submodule configured to determine, if the current moving speed of the terminal is less than the first speed threshold, that the terminal resource requirement of the terminal is P2R2, that is, the CSI resource of the second period needs to be configured for the terminal, and
  • the reporting mode requirement in the terminal resource requirement of the terminal is configured as a broadband reporting and a sub-band reporting;
  • a fifth determining submodule configured to determine that the terminal resource requirement of the terminal is P1R2, if the current moving speed of the terminal is greater than or equal to the first speed threshold and less than a second speed threshold, indicating that the terminal needs to be
  • the CSI resources of the first configuration period of the terminal configuration, and the reporting mode requirements of the terminal resource requirements of the terminal are configured as broadband reporting and sub-band reporting.
  • a sixth determining submodule configured to determine that the terminal resource requirement of the terminal is P3R1 if the current moving speed of the terminal is greater than or equal to the second speed threshold, indicating that a third period needs to be configured for the terminal.
  • the CSI resource and the reporting mode requirement in the terminal resource requirement of the terminal are configured as a broadband report.
  • the first speed threshold and the second speed threshold are used to divide a mobile state of the terminal, and when the moving speed of the terminal is less than a first speed threshold, the terminal is considered to be in a static or low speed state;
  • the moving speed is greater than or equal to the first speed threshold and less than the second speed threshold, and the terminal is considered to be in a medium speed state;
  • the moving speed of the terminal is greater than or equal to the second speed threshold, and the terminal is considered to be in a high speed state.
  • the Doppler frequency shift is small, the channel correlation time is large, and the channel change of the terminal is relatively flat during the relevant time, so the medium-cycle CSI resources equivalent to the channel-related time can be configured;
  • the Doppler shift becomes larger and the channel correlation time decreases.
  • the CSI resources of the small period are configured, and the reporting mode is configured to report the broadband and sub-band reporting, and provide more information of the channel to the base station as much as possible.
  • the Doppler frequency shift is too large, the channel correlation time is too small, so that the periodic CSI resources cannot provide accurate channel information.
  • a large-cycle CSI resource is configured, and the reporting mode is configured as a broadband report.
  • Basic communication quality information can be provided, and the scheduler can combine this CSI information to reserve more processing margin to ensure reliable transmission of the wireless link.
  • the third determining module 40 includes:
  • a first allocation submodule configured to allocate a periodic CSI to the terminal if the periodic CSI resource can meet the CSI periodic resource requirement in the terminal resource requirement and the reporting mode requirement in the terminal resource requirement
  • the resource for example, the periodic CSI resource corresponding to the base station configuration is given to the terminal.
  • a second allocation submodule configured to allocate a non-terminal to the terminal if the periodic CSI resource cannot meet the CSI period resource requirement in the terminal resource requirement and the reporting mode requirement in the terminal resource requirement.
  • the periodic CSI resource for example, the base station configures the aperiodic CSI resource corresponding to the CSI period resource requirement in the terminal resource requirement to the terminal.
  • the technical solution in the foregoing embodiment of the present application is configured to configure a periodic CSI resource based on an average value N a of the number of terminals served by the uplink service provided by the base station and a peak value N p of the number of terminals served by the uplink service provided by the base station.
  • Determining the terminal resource requirement based on the terminal service QoS requirement when the terminal service QoS requirement based on the terminal can determine the terminal resource requirement of the terminal; when the terminal service QoS requirement based on the terminal cannot determine the
  • the terminal resource requirement of the terminal is determined based on the current moving speed of the terminal, and the terminal CSI resource configuration of the terminal is determined based on the occupancy of the periodic CSI resource and the terminal resource requirement.
  • the present invention solves the problem that the process of deploying system resources is complicated when the capacity of the terminal user changes in the system, and can flexibly adapt to the change of the terminal user capacity in the system, causing waste of system resources and technical problems of reducing user experience, at least The following technical effects are achieved: 1. Flexibly adapt to system capacity changes, simplify the deployment process of system resources, improve the effective utilization of system resources, and improve the technical effect of user experience; 2. It is not necessary to modify system information broadcast parameters, and the implementation is simple and does not affect Online user experience; 3. Fully utilize the characteristics of the periodic CSI bearer content and the aperiodic CSI bearer content, and configure the system uplink resources reasonably, so that the resources reported by the CSI can fully satisfy the user QoS requirements.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé d'attribution de ressources et une station de base. Le procédé comporte les étapes consistant à: attribuer une ressource de CSI périodique en fonction d'une valeur moyenne Na du nombre de terminaux desservis par un service de liaison montante fourni par une station de base et d'une valeur de crête Np du nombre des terminaux desservis par le service de liaison montante fourni par la station de base; déterminer une demande de ressources de terminal en fonction d'une demande de QoS de service de terminal; lorsque la demande de ressources de terminal d'un terminal ne peut pas être déterminée d'après la demande de QoS de service de terminal du terminal, déterminer la demande de ressources de terminal d'après une vitesse actuelle de déplacement du terminal; et déterminer une attribution de ressources de CSI de terminal du terminal d'après un état d'occupation de la ressource de CSI périodique et la demande de ressources de terminal. Par conséquent, la présente invention résout les problèmes techniques, rencontrés dans l'état antérieur de la technique, du gaspillage des ressources de système et de la réduction de l'agrément d'utilisation causés par le fait que le processus de programmation des ressources du système est complexe et que la variation de capacité d'utilisateurs du terminal dans un système ne peut donc pas faire l'objet d'une adaptation souple lorsque la capacité d'utilisateurs du terminal dans le système change.
PCT/CN2017/117273 2017-04-24 2017-12-19 Procédé d'attribution de ressources et station de base WO2018196407A1 (fr)

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CN112470412B (zh) 2018-08-30 2023-12-26 上海诺基亚贝尔股份有限公司 频域时域信道硬化和开销减少
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