CN110611900B - MPDCCH scheduling method and device - Google Patents

MPDCCH scheduling method and device Download PDF

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CN110611900B
CN110611900B CN201810615960.7A CN201810615960A CN110611900B CN 110611900 B CN110611900 B CN 110611900B CN 201810615960 A CN201810615960 A CN 201810615960A CN 110611900 B CN110611900 B CN 110611900B
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sinr
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correction value
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reporting period
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CN110611900A (en
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王玉财
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Datang Mobile Communications Equipment Co Ltd
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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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • 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 signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The application discloses an MPDCCH scheduling method and device. The method comprises the following steps: a base station detects the transmission condition of an uplink channel and determines the SINR correction value of the MPDCCH according to the transmission condition of the uplink channel; correcting the SINR corresponding to the CQI reported by the terminal according to the SINR correction value; determining the aggregation level and the repetition times of the corresponding MPDCCH according to the corrected SINR; and scheduling the MPDCCH according to the aggregation level and the repetition times of the MPDCCH. By adopting the method and the device, the missed detection probability of the MPDCCH can be reduced.

Description

MPDCCH scheduling method and device
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and an apparatus for scheduling a Machine Physical Downlink Control Channel (MPDCCH).
Background
For enhanced-machine type communication (EMTC) systems, the search space of the MPDCCH is determined by the aggregation level and the number of repetitions. As shown in table 1, there are 4 choices for the number of repetitions r (r1, r2, r3, r4), 5 choices for the aggregation level L (L2, L4, L8, L16, L24), 3 choices for the MPDCCH PRB SET (2PRB SET, 4PRB SET, 2+4PRB SET), and the maximum number of repetitions rmaxHas a value range of {1,2,4,8,16,32,64,128,256 }. The PRB is an abbreviation of a physical resource block, namely a physical resource block. As shown in table 2, the combinations of the number of repetitions and the aggregation levels obtained by the combination are very large.
TABLE 1
Figure BDA0001696817020000011
TABLE 2
rmax r1 r2 r3 r4
1 1 - - -
2 1 2 - -
4 1 2 4 -
>＝8 rmax/8 rmax/4 rmax/2 rmax
According to the link simulation, aggregation levels and repetition times corresponding to different signal to interference plus noise ratios (SINRs) can be obtained, that is, the aggregation levels and the repetition times of the MPDCCH are determined according to the SINR.
When the uplink service is single, SINR is mapped according to Channel Quality Indication (CQI), and table 3 shows a mapping relationship between SINA and CQI.
TABLE 3
Figure BDA0001696817020000021
Wherein, CQI is reported by the terminal, and rmax is a configuration value.
The MPDCCH belongs to a downlink control channel, and only the downlink CQI can reflect the downlink channel quality. Because the terminal mainly performs uplink service in the internet of things, the downlink channel quality condition can only map the SINR according to the CQI fed back by the user, so that the aggregation level and the repetition times of the MPDCCH are obtained. The CQI value reported by the terminal may be inaccurate, and if the CQI value reported by the terminal is too high, the aggregation level and the repetition frequency of the MPDCCH obtained by mapping are low, so that the MPDCCH missing detection can easily occur on the terminal; if the CQI reported by the terminal is too low, the aggregation level and the repetition number obtained by mapping are high, which results in resource waste.
Because the EMTC system has a strict requirement on the packet loss rate, if the MPDCCH is missed, the uplink packet loss rate will be obviously increased, so an effective MPDCCH scheduling policy is needed to reduce the missed detection of the MPDCCH as much as possible.
Disclosure of Invention
The embodiment of the application provides an MPDCCH scheduling method and device.
In a first aspect, an MPDCCH scheduling method is provided, including: the base station detects the transmission condition of an uplink channel, determines a signal to interference plus noise ratio (SINR) correction value of the MPDCCH according to the transmission condition of the uplink channel, corrects an SINR corresponding to a Channel Quality Indicator (CQI) reported by a terminal according to the SINR correction value, determines the aggregation level and the repetition frequency of the corresponding MPDCCH according to the corrected SINR, and schedules the MPDCCH according to the aggregation level and the repetition frequency of the MPDCCH.
In a possible implementation manner, the determining, by the base station, the SINR correction value of MPDCCH according to the uplink channel transmission condition includes: and the base station determines the accumulated value of the SINR correction value in the CQI reporting period according to the transmission condition of the uplink channel in the CQI reporting period. And the base station corrects the SINR corresponding to the CQI reported by the terminal according to the SINR correction value, and the method comprises the following steps: and the base station corrects the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
In a possible implementation manner, the correcting, by the base station, the SINR corresponding to the CQI reported by the terminal according to the accumulated SINR correction value includes: and the base station determines the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving time to obtain an SINR total correction value, and corrects the SINR corresponding to the currently received CQI according to the SINR total correction value.
In one possible implementation, the method further includes: if the accumulated value of the SINR correction value in the CQI reporting period is smaller than a first threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the first threshold value; or if the accumulated value of the SINR modification value in the CQI reporting period is greater than a second threshold, adjusting the accumulated value of the SINR modification value in the CQI reporting period to the second threshold. The first threshold and the second threshold are preset, the first threshold is the minimum value of the SINR correction value in the period, and the second threshold is the maximum value of the SINR correction value in the period.
In one possible implementation, the method further includes: if the SINR total correction value is smaller than a third threshold value, adjusting the SINR total correction value to the third threshold value; or if the SINR total correction value is greater than a fourth threshold, adjusting the SINR total correction value to the fourth threshold. The third threshold and the fourth threshold are preset, the third threshold is the minimum value of the SINR total correction value, and the fourth threshold is the maximum value of the SINR total correction value.
In a possible implementation manner, the determining, by the base station, an accumulated value of SINR modification values in a CQI reporting period according to a transmission condition of the uplink channel in the CQI reporting period includes: the base station checks each uplink channel Cyclic Redundancy Check (CRC) information received in a CQI reporting period, if the check is passed, the SINR correction value corresponding to the current check is determined to be a first increment, otherwise, the SINR correction value corresponding to the current check is determined to be a second increment; wherein the first increment is a positive number and the second increment is a negative number; and the base station accumulates the SINR correction value corresponding to each check in the CQI reporting period to obtain the accumulated value of the SINR correction value in the CQI reporting period.
In one possible implementation, the sum of the absolute value of the first increment and the absolute value of the second increment is equal to 1.
In a possible implementation manner, the uplink channel is a physical uplink shared channel.
In a second aspect, a base station is provided, including: the detection module is used for detecting the transmission condition of the uplink channel; the SINR correction value determining module is used for determining the SINR correction value of the MPDCCH according to the transmission condition of the uplink channel; the SINR correction module is used for correcting the SINR corresponding to the CQI reported by the terminal according to the SINR correction value; an MPDCCH configuration determining module, configured to determine, according to the modified SINR, an aggregation level and a repetition number of the corresponding MPDCCH; and the scheduling module is used for scheduling the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
In a possible implementation manner, the SINR correction value determining module is specifically configured to: according to the transmission condition of the uplink channel in the CQI reporting period, determining the accumulated value of the SINR correction value in the CQI reporting period; the SINR correction module is specifically configured to: and correcting the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
In a possible implementation manner, the SINR modification module is specifically configured to: determining the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving moment to obtain an SINR total correction value; and correcting the SINR corresponding to the currently received CQI according to the SINR total correction value.
In a third aspect, a communication apparatus is provided, including: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus; the processor is used for reading the program in the memory and executing: detecting the transmission condition of an uplink channel; determining an SINR correction value of the MPDCCH according to the transmission condition of the uplink channel; according to the SINR correction value, correcting the SINR corresponding to the CQI reported by the terminal; determining the aggregation level and the repetition times of the corresponding MPDCCH according to the corrected SINR; and scheduling the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
In one possible implementation, the processor is specifically configured to: according to the transmission condition of the uplink channel in the CQI reporting period, determining the accumulated value of the SINR correction value in the CQI reporting period; and correcting the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
In one possible implementation, the processor is specifically configured to: determining the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving moment to obtain an SINR total correction value; and correcting the SINR corresponding to the currently received CQI according to the SINR total correction value.
In one possible implementation, the processor is further configured to: if the accumulated value of the SINR correction value in the CQI reporting period is smaller than a first threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the first threshold value; or if the accumulated value of the SINR modification value in the CQI reporting period is greater than a second threshold, adjusting the accumulated value of the SINR modification value in the CQI reporting period to the second threshold. The first threshold and the second threshold are preset, the first threshold is the minimum value of the SINR correction value in the period, and the second threshold is the maximum value of the SINR correction value in the period.
In one possible implementation, the processor is further configured to: if the SINR total correction value is smaller than a third threshold value, adjusting the SINR total correction value to the third threshold value; or if the SINR total correction value is greater than a fourth threshold, adjusting the SINR total correction value to the fourth threshold. The third threshold and the fourth threshold are preset, the third threshold is the minimum value of the SINR total correction value, and the fourth threshold is the maximum value of the SINR total correction value.
In one possible implementation, the processor is specifically configured to: checking each uplink channel CRC information received in a CQI reporting period, if the check is passed, determining the SINR correction value corresponding to the check at this time as a first increment, otherwise, determining the SINR correction value corresponding to the check at this time as a second increment; wherein the first increment is a positive number and the second increment is a negative number; and accumulating the SINR correction value corresponding to each check in the CQI reporting period to obtain the accumulated value of the SINR correction value in the CQI reporting period.
In a fourth aspect, there is provided a computer-readable storage medium having stored thereon computer-executable instructions for causing the computer to perform the method of any of the first aspects above.
According to the embodiment of the application, the base station determines the SINR correction value of the MPDCCH by detecting the transmission condition of the uplink channel, and corrects the SINR corresponding to the CQI reported by the terminal according to the SINR correction value, so that the aggregation level and the repetition frequency of the MPDCCH are determined according to the corrected SINR, the scheduling of the MPDCCH can be more reasonable, and the missing detection of the MPDCCH is reduced.
Drawings
FIG. 1 is a schematic diagram of a network architecture used in an embodiment of the present application;
fig. 2 is a schematic diagram of an MPDCCH scheduling flow provided in an embodiment of the present application;
fig. 3 is a schematic structural diagram of a base station according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of a possible communication scenario provided in the embodiment of the present application is shown. As shown in fig. 1, a terminal 110 accesses a wireless network through a Radio Access Network (RAN) node 120 to acquire a service of an external network (e.g., the internet) through the wireless network or to communicate with other terminals through the wireless network.
Among them, a terminal is also called User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., and is a device providing voice and/or data connectivity to a user, for example, a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart), a wireless terminal in home (smart home), and the like.
The RAN is the part of the network that accesses the terminal to the wireless network. A RAN node (or device) is a node (or device) in a radio access network, which may also be referred to as a base station. Currently, some examples of RAN nodes are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc. In addition, in one network configuration, the RAN may include a Centralized Unit (CU) node and a Distributed Unit (DU) node.
The communication architecture may be a 5G system or an evolved system thereof.
The embodiments of the present application take a base station and a terminal as examples for description. The base station can correct the aggregation level and the repetition times of the MPDCCH according to the detection condition of the uplink channel, and can effectively reduce the missed detection probability of the MPDCCH.
Referring to fig. 2, a schematic diagram of an MPDCCH scheduling procedure provided in this embodiment of the present application is shown, where the procedure may include:
s201: the base station detects the transmission condition of the uplink channel.
The uplink channel may be a Physical Uplink Shared Channel (PUSCH) or other uplink channels.
The transmission condition of the uplink channel may be determined by performing Cyclic Redundancy Check (CRC) check according to information transmitted by the uplink channel.
S202: and the base station determines the SINR correction value of the MPDCCH according to the transmission condition of the uplink channel.
The SINR correction value is a parameter for correcting the SINR value, and is also referred to as an SINR adjustment amount, that is, an increment of the SINR value. The SINR correction value may be a positive or negative number, or may be zero, and is determined according to the uplink channel transmission condition.
S203: and the base station corrects the SINR corresponding to the CQI reported by the terminal according to the SINR correction value.
In the embodiment of the present application, in S202 to S203, SINR correction may be performed based on a CQI reporting period. One CQI reporting period refers to a time interval between two times of reporting of CQI by the terminal.
In a possible implementation manner of S202 to S203, taking a time period from t1 to t2 as a CQI reporting period as an example, at time t1, the base station receives the CQI of the CQI reporting period and queries an SINR value corresponding to the CQI, for example, the SINR value may be queried according to table 3. After that, in the CQI reporting period, the base station receives PUSCH CRC information reported by a Physical Layer (PL) for the first time, checks the PUSCH CRC information according to the CRC information, calculates an SINR correction value at this time according to a check result, and corrects the inquired SINR by using the correction value. After that, in the CQI reporting period, after receiving PUSCH CRC information reported by PL each time, checking according to the CRC information, calculating a SINR modification value Vadd at this time according to a check result, and modifying the last modified SINR in the CQI reporting period with the modification value, so as to obtain the modified SINR in the CQI reporting period, and then transferring to the subsequent step S204 for further processing.
In another possible implementation manner of S202 to S203, the base station determines an accumulated value of SINR modification values in a CQI reporting period according to a transmission condition of an uplink channel in the CQI reporting period, and corrects an SINR corresponding to a CQI reported by a terminal in the CQI reporting period according to the accumulated value of SINR modification values.
One possible implementation manner of correcting the SINR corresponding to the CQI reported by the terminal by the base station according to the accumulated value of the SINR correction value is as follows: and the base station determines the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving time to obtain an SINR total correction value, and corrects the SINR corresponding to the currently received CQI according to the SINR total correction value.
Optionally, in S202, when the base station performs verification on each received uplink channel CRC information, if the verification passes, determining that the SINR corrected value corresponding to the current verification is a first increment, otherwise, determining that the SINR corrected value corresponding to the current verification is a second increment; the first increment is a positive number, and the second increment is a negative number, so that the missing detection of the MPDCCH can be reduced as much as possible, the probability of packet loss caused by the missing detection of the MPDCCH with too high CQI is further reduced, and the waste of a large amount of wireless resources due to too low CQI is avoided. In S203, the base station accumulates the SINR modification value corresponding to each check in the CQI reporting period to obtain an accumulated value of the SINR modification value in the CQI reporting period.
Optionally, the sum of the absolute value of the first increment and the absolute value of the second increment is equal to 1.
For example, in S202, for the CRC information of the PUCCH received each time, if the check is passed, the SINR correction value of the time is set to Vadd ═ K, and if the check is not passed, the SINR correction value of the time is set to Vadd ═ 1-K, where K is a configuration value, and a value range may be 0< K < 1. Taking K equal to 0.01 as an example, if the CRC check passes, Vadd equal to 0.01db is set, and if the CRC check fails, the SINR correction value at this time is set to-0.99 db. And the base station accumulates the SINR correction values respectively corresponding to all the checks in one CQI reporting period to obtain an SINR accumulated value VaddPeriod in the CQI reporting period, and accumulates the SINR accumulated value VaddPeriod in each CQI reporting period to obtain an SINR total correction value VaddSum. In S203, the base station obtains the corresponding SINR from the CQI received in the CQI reporting period through the lookup table 3, and corrects the SINR by the SINR total correction value VaddSum, that is, the corrected SINR' is SINR + VaddSum obtained by looking up the table.
Alternatively, a minimum value of VaddPeriod (referred to as a first threshold value) and a maximum value of VaddPeriod (referred to as a second threshold value) may be set in advance, and the first threshold value is smaller than the second threshold value. If the accumulated value VaddPeriod of the SINR modification value in the CQI reporting period is smaller than the first threshold, the VaddPeriod is adjusted to the first threshold. Or, if the accumulated value VaddPeriod of the SINR correction value in the CQI reporting period is greater than the second threshold, adjusting the VaddPeriod to the second threshold. By the scheme, the value of the VaddPeriod can be ensured not to exceed a specified boundary, so that the reasonability and the effectiveness of the value of the SINR are ensured.
Alternatively, a minimum value of VaddSum (referred to as a third threshold) and a maximum value of VaddSum (referred to as a second threshold) may be set in advance, the third threshold being smaller than the fourth threshold. If the SINR total correction value VaddSum is smaller than the third threshold value, the SINR total correction value VaddSum is adjusted to the third threshold value. Alternatively, if the SINR total correction value VaddSum is greater than the fourth threshold value, the SINR total correction value VaddSum is adjusted to the fourth threshold value. By the scheme, the value of the VaddSum can be ensured not to exceed a specified boundary, so that the reasonability and the effectiveness of the value of the SINR are ensured.
S204: and the base station determines the aggregation level and the repetition times of the corresponding MPDCCH according to the corrected SINR.
In this step, the base station may query a mapping relationship table between the SINR and the aggregation level and the repetition number of the MPDCCH according to the corrected SINR to obtain the corresponding aggregation level and the repetition number of the MPDCCH. Table 4 exemplarily shows a mapping relationship between SINR and aggregation level and repetition number of MPDCCH.
TABLE 4
Figure BDA0001696817020000101
Figure BDA0001696817020000111
Figure BDA0001696817020000121
S205: and the base station schedules the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
In the step, the base station aggregates the MPDCCH according to the determined aggregation level of the MPDCCH, and transmits the MPDCCH according to the determined repetition times of the MPDCCH.
Through the above processes, under the condition of no downlink service, the terminal can still assist in performing SINR correction through the CRC check condition of the uplink PUSCH, so that the corrected SINR is more accurate, thereby not only avoiding the missing detection of the MPDCCH caused by the too large SINR, but also reducing the packet loss rate caused by the missing detection of the MPDCCH and improving the success rate of data packet transmission of EMTC, and also avoiding the waste of MPDCCH resources caused by the too small SINR.
Based on the same technical concept, the embodiment of the present application further provides a base station, and the base station may implement the MPDCCH scheduling procedure in the foregoing embodiment.
Referring to fig. 3, a schematic structural diagram of a base station provided in the embodiment of the present application is shown, where the base station may include: a detection module 301, an SINR modification value determination module 302, an SINR modification module 303, an MPDCCH configuration determination module 40/4, and a scheduling module 305.
The detection module 301 is configured to detect an uplink channel transmission condition. The SINR modification value determining module 302 is configured to determine a SINR modification value of a signal to interference plus noise ratio of the MPDCCH according to the uplink channel transmission condition. The SINR correction module 303 is configured to correct an SINR corresponding to a channel quality indicator CQI reported by the terminal according to the SINR correction value. The MPDCCH configuration determining module 304 is configured to determine, according to the modified SINR, an aggregation level and a repetition number of the corresponding MPDCCH. The scheduling module 305 is configured to schedule the MPDCCH according to the aggregation level and the repetition number of the MPDCCH.
Optionally, the SINR correction value determining module 302 is specifically configured to: according to the transmission condition of the uplink channel in the CQI reporting period, determining the accumulated value of the SINR correction value in the CQI reporting period; the SINR modification module 303 is specifically configured to: and correcting the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
Optionally, the SINR correcting module 303 is specifically configured to: and determining the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving time to obtain an SINR total correction value, and correcting the SINR corresponding to the currently received CQI according to the SINR total correction value.
Optionally, the SINR modification value determining module 302 is further configured to: if the SINR total correction value is smaller than a third threshold value, adjusting the SINR total correction value to the third threshold value; or if the SINR total correction value is greater than a fourth threshold, adjusting the SINR total correction value to the fourth threshold. The third threshold and the fourth threshold are preset, the third threshold is the minimum value of the SINR total correction value, and the fourth threshold is the maximum value of the SINR total correction value.
Optionally, the SINR correction value determining module 302 is specifically configured to: checking each uplink channel CRC information received in a CQI reporting period, if the check is passed, determining the SINR correction value corresponding to the check at this time as a first increment, otherwise, determining the SINR correction value corresponding to the check at this time as a second increment; wherein the first increment is a positive number and the second increment is a negative number; and accumulating the SINR correction value corresponding to each check in the CQI reporting period to obtain the accumulated value of the SINR correction value in the CQI reporting period.
Optionally, a sum of an absolute value of the first increment and an absolute value of the second increment is equal to 1.
Optionally, the uplink channel is a physical uplink shared channel.
Based on the same technical concept, the embodiment of the present application further provides a communication apparatus, which can implement the MPDCCH scheduling procedure in the foregoing embodiment.
Referring to fig. 4, a schematic structural diagram of a communication device provided in the embodiment of the present application is shown, where the communication device may include: a processor 401, a memory 402, a transceiver 403, and a bus interface 404.
The processor 401 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 401 in performing operations. The transceiver 403 is used for receiving and transmitting data under the control of the processor 401.
The bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 401, and various circuits, represented by memory 402, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. Bus interface 404 provides an interface. The processor 401 is responsible for managing the bus architecture and general processing, and the memory 402 may store data used by the processor 401 in performing operations.
The process disclosed in the embodiment of the present invention may be applied to the processor 401, or implemented by the processor 401. In implementation, the steps of the signal processing flow may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 401. The processor 401 may be a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or the like that may implement or perform the methods, steps, and logic blocks disclosed in embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in the processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 402, and the processor 401 reads the information in the memory 402 and completes the steps of the signal processing flow in combination with the hardware thereof.
Specifically, the processor 401 is configured to read a program in the memory 402 and execute: detecting the transmission condition of an uplink channel, determining an SINR correction value of the MPDCCH according to the transmission condition of the uplink channel, correcting an SINR corresponding to the CQI reported by the terminal according to the SINR correction value, determining the aggregation level and the repetition frequency of the corresponding MPDCCH according to the corrected SINR, and scheduling the MPDCCH according to the aggregation level and the repetition frequency of the MPDCCH.
Specific implementation of the process can be referred to the related description of the foregoing embodiments, and will not be repeated here.
Based on the same technical concept, the embodiment of the application also provides a computer storage medium. The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the processes performed by the foregoing embodiments.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims (18)

1. A method for scheduling a Machine Physical Downlink Control Channel (MPDCCH) is characterized by comprising the following steps:
a base station detects the transmission condition of an uplink channel;
the base station determines a signal to interference plus noise ratio (SINR) correction value of the MPDCCH according to the uplink channel transmission condition;
the base station corrects the SINR corresponding to the channel quality indicator CQI reported by the terminal according to the SINR correction value;
the base station determines the aggregation level and the repetition times of the corresponding MPDCCH according to the corrected SINR;
and the base station schedules the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
2. The method of claim 1, wherein:
the base station determines the SINR correction value of the MPDCCH according to the uplink channel transmission condition, and the method comprises the following steps:
the base station determines the accumulated value of the SINR correction value in the CQI reporting period according to the transmission condition of the uplink channel in the CQI reporting period;
and the base station corrects the SINR corresponding to the CQI reported by the terminal according to the SINR correction value, and the method comprises the following steps:
and the base station corrects the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
3. The method of claim 2, wherein the base station corrects the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction values, and the method comprises:
the base station determines the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving moment to obtain the SINR total correction value;
and the base station corrects the SINR corresponding to the currently received CQI according to the SINR total correction value.
4. The method of claim 3, wherein the method further comprises:
if the accumulated value of the SINR correction value in the CQI reporting period is smaller than a first threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the first threshold value; alternatively, the first and second electrodes may be,
if the accumulated value of the SINR correction value in the CQI reporting period is larger than a second threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the second threshold value;
the first threshold and the second threshold are preset, the first threshold is the minimum value of the SINR correction value in the period, and the second threshold is the maximum value of the SINR correction value in the period.
5. The method of claim 3, wherein the method further comprises:
if the SINR total correction value is smaller than a third threshold value, adjusting the SINR total correction value to the third threshold value; alternatively, the first and second electrodes may be,
if the SINR total correction value is larger than a fourth threshold value, adjusting the SINR total correction value to the fourth threshold value;
the third threshold and the fourth threshold are preset, the third threshold is the minimum value of the SINR total correction value, and the fourth threshold is the maximum value of the SINR total correction value.
6. The method of claim 2, wherein the determining, by the base station, the accumulated value of the SINR correction value in the CQI reporting period according to the transmission condition of the uplink channel in the CQI reporting period comprises:
the base station checks the Cyclic Redundancy Check (CRC) information of each uplink channel received in the CQI reporting period, if the CRC passes, the SINR correction value corresponding to the current check is determined to be a first increment, and if the CRC passes, the SINR correction value corresponding to the current check is determined to be a second increment; wherein the first increment is a positive number and the second increment is a negative number;
and the base station accumulates the SINR correction value corresponding to each check in the CQI reporting period to obtain the accumulated value of the SINR correction value in the CQI reporting period.
7. The method of claim 6, wherein a sum of an absolute value of the first increment and an absolute value of the second increment equals 1.
8. The method of claim 1, wherein the uplink channel is a physical uplink shared channel.
9. A base station, comprising:
the detection module is used for detecting the transmission condition of the uplink channel;
the SINR correction value determining module is used for determining the SINR correction value of the signal to interference plus noise ratio of the machine physical downlink control channel MPDCCH according to the transmission condition of the uplink channel;
the SINR correction module is used for correcting the SINR corresponding to the channel quality indicator CQI reported by the terminal according to the SINR correction value;
an MPDCCH configuration determining module, configured to determine, according to the modified SINR, an aggregation level and a repetition number of the corresponding MPDCCH;
and the scheduling module is used for scheduling the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
10. The base station of claim 9, wherein:
the SINR correction value determining module is specifically configured to:
according to the transmission condition of the uplink channel in the CQI reporting period, determining the accumulated value of the SINR correction value in the CQI reporting period;
the SINR correction module is specifically configured to:
and correcting the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
11. The base station of claim 10, wherein the SINR modification module is specifically configured to:
determining the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving moment to obtain an SINR total correction value;
and correcting the SINR corresponding to the currently received CQI according to the SINR total correction value.
12. A communications apparatus, comprising: the system comprises a processor, a memory and a transceiver, wherein the processor, the memory and the transceiver are connected through a bus;
the processor is used for reading the program in the memory and executing:
detecting the transmission condition of an uplink channel;
determining a signal to interference plus noise ratio (SINR) correction value of a Machine Physical Downlink Control Channel (MPDCCH) according to the uplink channel transmission condition;
according to the SINR correction value, correcting the SINR corresponding to the channel quality indicator CQI reported by the terminal;
determining the aggregation level and the repetition times of the corresponding MPDCCH according to the corrected SINR;
and scheduling the MPDCCH according to the aggregation level and the repetition times of the MPDCCH.
13. The apparatus of claim 12, wherein the processor is specifically configured to:
according to the transmission condition of the uplink channel in the CQI reporting period, determining the accumulated value of the SINR correction value in the CQI reporting period;
and correcting the SINR corresponding to the CQI reported by the terminal according to the accumulated value of the SINR correction value.
14. The apparatus as recited in claim 13, wherein said processor is specifically configured to:
determining the sum of the accumulated values of the SINR correction values of the currently received CQI in each CQI reporting period before the receiving moment to obtain an SINR total correction value;
and correcting the SINR corresponding to the currently received CQI according to the SINR total correction value.
15. The apparatus of claim 14, wherein the processor is further configured to:
if the accumulated value of the SINR correction value in the CQI reporting period is smaller than a first threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the first threshold value; alternatively, the first and second electrodes may be,
if the accumulated value of the SINR correction value in the CQI reporting period is larger than a second threshold value, adjusting the accumulated value of the SINR correction value in the CQI reporting period to the second threshold value;
the first threshold and the second threshold are preset, the first threshold is the minimum value of the SINR correction value in the period, and the second threshold is the maximum value of the SINR correction value in the period.
16. The apparatus of claim 14, wherein the processor is further configured to:
if the SINR total correction value is smaller than a third threshold value, adjusting the SINR total correction value to the third threshold value; alternatively, the first and second electrodes may be,
if the SINR total correction value is larger than a fourth threshold value, adjusting the SINR total correction value to the fourth threshold value;
the third threshold and the fourth threshold are preset, the third threshold is the minimum value of the SINR total correction value, and the fourth threshold is the maximum value of the SINR total correction value.
17. The apparatus as recited in claim 13, wherein said processor is specifically configured to:
checking each uplink channel Cyclic Redundancy Check (CRC) information received in a CQI reporting period, if the check is passed, determining the SINR correction value corresponding to the check at this time as a first increment, and if not, determining the SINR correction value corresponding to the check at this time as a second increment; wherein the first increment is a positive number and the second increment is a negative number;
and accumulating the SINR correction value corresponding to each check in the CQI reporting period to obtain the accumulated value of the SINR correction value in the CQI reporting period.
18. A computer-readable storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 8.
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