CN103828279A

CN103828279A - Adaptive adjusting method and device of target value of initial block error rate

Info

Publication number: CN103828279A
Application number: CN201380002732.8A
Authority: CN
Inventors: 王欣; 敖娟; 史俊财; 任小锋
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-09-09
Filing date: 2013-09-09
Publication date: 2014-05-28
Anticipated expiration: 2033-09-09
Also published as: CN103828279B; WO2015032082A1

Abstract

The invention relates to an adaptive adjusting method and a device of a target value of the initial block error rate (IBLER). The method includes that the position attribute of UE is determined, the position attribute is a far point or a middle-near point; if the US is the far-point UE, a first IBLER target value is adjusted to a second IBLER target value, the first IBLER target value is a default IBLER target value, and the second IBLER target value is larger than the first IBLER target value; or if the US is the middle-near point UE, when the proportion of a small TB block dispatched by the UE is more than or equal to a preset proportion threshold value, the first IBLER target value is adjusted to the second IBLER target value, wherein the small TB is the TB with the size of a transmistion block and the TBS less than the preset TBS threshold value. According to the adaptive adjusting method and the device of the target value of the initial block error rate, the spectral efficiency of far-point users and middle-near point packet business settings is improved by the adjustment of the IBLER target value.

Description

Adaptive adjustment method and device for target value of downlink initial block error rate

Technical Field

The invention relates to the technical field of mobile communication, in particular to a method and a device for adaptively adjusting a target value of an initial downlink block Error rate (IBLER).

Background

In a Long Term Evolution (LTE) system, a User Equipment (UE) continuously reports Channel Quality Indication (CQI) information to a base station to indicate the Quality of a Channel where the UE is currently located, and the base station adjusts the size of data to be transmitted according to the CQI and transmits the data in a suitable data modulation and coding manner. After receiving and demodulating the data sent by the base station side, the UE informs the base station side of the information whether the data is correctly received, if the data is correctly received, ACK indication information is sent, otherwise, NACK indication information is sent, and the ratio of the number of times that the data which is sent for the first time is not correctly received and returned to the NACK indication information to the number of times that the data which is sent for the first time is called IBLER measured value. In an actual system, the CQI reported by the UE cannot completely and truly reflect the actual channel quality, and if the reported CQI is directly used for data transmission, the user throughput is greatly affected, so the base station needs to adjust the reported CQI.

In the prior art, a base station generally sets a fixed IBLER target value, calculates an IBLER measurement value according to received ACK indication information and NACK indication information, compares the IBLER target value with the IBLER measurement value, and adjusts CQI reported by the UE. The base station adjusting the CQI using a fixed IBLER target value does not optimize the spectral efficiency of each UE in all wireless scenarios.

Disclosure of Invention

The embodiment of the invention provides a self-adaptive adjusting method and device for a target value of a downlink initial transmission block error rate (IBLER), which are used for realizing self-adaptive adjustment of the target value of the IBLER, and further improving the spectrum efficiency in a far-point user scene or a service scene in which a medium-near point user schedules a small data packet.

In a first aspect, an embodiment of the present invention provides a method for adaptively adjusting a target downlink initial block error rate, where the method includes:

determining a position attribute of User Equipment (UE), wherein the position attribute is a far point or a near point;

if the UE is a far point UE, adjusting a first IBLER target value to be a second IBLER target value, wherein the first IBLER target value is a system default IBLER target value, and the second IBLER target value is larger than the first IBLER target value; or,

and if the UE is a near-middle point UE, when the proportion of a small transmission block TB block scheduled by the UE is greater than or equal to a preset proportion threshold value, adjusting the first IBLER target value to be the second IBLER target value, wherein the small TB block is a TB block of which the size TBS of the transmission block is less than a preset TBS threshold value.

According to the first aspect, in a first possible implementation manner, before the adjusting the first IBLER target value to the second IBLER target value, the method further includes: receiving Channel Quality Indicator (CQI) information reported by the UE; and determining that the channel of the UE is a non-similar Additive White Gaussian Noise (AWGN) channel according to the CQI information.

According to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, before the adjusting the first IBLER target value to the second IBLER target value, the method further includes: calculating an average value of the number of RB (resource Block) allocated to the UE; and determining that the average value of the RB numbers distributed to the UE is larger than a preset RB threshold value.

According to the first aspect or the first or second possible implementation manner of the first aspect, in a third possible implementation manner, the determining a location attribute of the UE includes: and determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

According to a third possible implementation manner of the first aspect, in a fourth possible implementation manner, the determining, according to the average modulation and coding scheme MCS, or the MCS filter value, or the signal to interference plus noise ratio SINR of the UE, the location attribute of the UE is specifically: if the average MCS is smaller than a preset MCS threshold value, determining that the UE is a far-point UE, and if the average MCS is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or, if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is greater than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or if the SINR is smaller than an SINR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

According to the first possible implementation manner of the first aspect, in a fifth possible implementation manner, the determining, according to the CQI information, that the channel of the UE is a non-similar additive white gaussian noise AWGN channel specifically includes: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

According to a fifth possible implementation manner of the first aspect, in a sixth possible implementation manner, the mapping the CQI information to a first spectrum efficiency includes: if the CQI information is one channel of CQI information, mapping the channel of CQI information into a first spectrum efficiency; or if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to corresponding first spectrum efficiency, and summing the first spectrum efficiency corresponding to each path of CQI information to obtain the first spectrum efficiency corresponding to the two paths of CQI information.

In a second aspect, an embodiment of the present invention provides an adaptive adjustment apparatus for a target downlink initial block error rate, where the apparatus includes:

a first determining unit, configured to determine a location attribute of a user equipment UE, where the location attribute is a far point or a near point;

an adjusting unit, configured to obtain the location attribute of the UE determined by the first determining unit, and if the UE is a distant UE, adjust a first IBLER target value to a second IBLER target value, where the first IBLER target value is a system default IBLER target value, and the second IBLER target value is greater than the first IBLER target value; or, if the UE is a near-mid-point UE, when the ratio of a small transport block TB block scheduled by the UE is greater than or equal to a preset ratio threshold, adjusting the first IBLER target value to be the second IBLER target value, where the small TB block is a TB block whose size TBs of the transport block is smaller than a preset TBs threshold.

According to the second aspect, in a first possible implementation manner, the apparatus further includes a receiving unit, a second determining unit: the receiving unit is configured to receive channel quality indicator CQI information reported by the UE, and transmit the CQI information to a second determining unit; the second determining unit is configured to receive the CQI transmitted by the receiving unit, and determine, according to the CQI, that the channel of the UE is a non-similar additive white gaussian noise AWGN channel.

According to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner, the apparatus further includes a calculating unit and a third determining unit: the calculating unit is used for calculating the average value of the RB numbers of the resource blocks distributed to the UE and transmitting the average value of the RB numbers distributed to the UE to the third determining unit; a third determining unit, configured to determine that an average value of the numbers of RBs allocated to the UE is greater than a preset RB threshold.

According to the second aspect or the first or second possible implementation manner of the second aspect, in a third possible implementation manner, the first determining unit is specifically configured to: and determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

According to a third possible implementation manner of the second aspect, in a fourth possible implementation manner, the first determining unit is specifically configured to: if the average MCS is smaller than a preset MCS threshold value, determining that the UE is a far-point UE, and if the average MCS is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or, if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is greater than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or if the SINR is smaller than an SINR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

According to the first possible implementation manner of the second aspect, in a fifth possible implementation manner, the second determining unit is specifically configured to: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

According to a fifth possible implementation manner of the second aspect, in a sixth possible implementation manner, the second determining unit is configured to map the CQI information to a first spectrum efficiency, and specifically: if the CQI information is one channel of CQI information, mapping the channel of CQI information into a first spectrum efficiency; or if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to corresponding first spectrum efficiency, and summing the first spectrum efficiency corresponding to each path of CQI information to obtain the first spectrum efficiency corresponding to the two paths of CQI information.

In a third aspect, an embodiment of the present invention provides a network device, where the network device includes:

a transceiver processor;

a memory;

the memory is used for storing programs;

the processor calls the program in the memory to execute:

According to the third aspect, in a first possible implementation manner, the method further includes: a transceiver, before the processor adjusts the first IBLER target value to the second IBLER target value, configured to: receiving Channel Quality Indicator (CQI) information reported by the UE; the processor is further configured to determine that the channel of the UE is a non-similar additive white gaussian noise AWGN channel according to the CQI information.

According to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner, before the processor adjusts the first IBLER target value to the second IBLER target value, the processor is further configured to: calculating an average value of the number of RB (resource Block) allocated to the UE; and determining that the average value of the RB numbers distributed to the UE is larger than a preset RB threshold value.

According to the third aspect or the first or second possible implementation manner of the third aspect, in a third possible implementation manner, the determining, by the processor, a location attribute of the UE includes: and the method is used for determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

According to a third possible implementation manner of the third aspect, in a fourth possible implementation manner, the processor is configured to determine the location attribute of the UE according to an average modulation and coding scheme, MCS, or a filtered MCS value, or a signal to interference plus noise ratio, SINR, of the UE, and specifically includes: the method is used for determining that the UE is a far point UE if the average MCS is smaller than a preset MCS threshold value, and determining that the UE is a medium-near point UE if the average MCS is larger than or equal to the preset MCS threshold value; or, the MCS filter is configured to determine that the UE is a far-point UE if the MCS filter is smaller than the preset MCS threshold, and determine that the UE is a medium-near-point UE if the MCS filter is greater than or equal to the preset MCS threshold; or, the method is configured to determine that the UE is a far-point UE if the SINR is less than an SINR threshold, and determine that the UE is a medium-near-point UE if the SINR is greater than or equal to the SINR threshold.

According to a first possible implementation manner of the third aspect, in a fifth possible implementation manner, the processor is configured to determine, according to the CQI information, that a channel of the UE is a non-similar additive white gaussian noise AWGN channel, and the determining includes: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

According to a fifth possible implementation manner of the third aspect, in a sixth possible implementation manner, the processor is configured to map the CQI information to a first spectral efficiency, and includes: if the CQI information is one path of CQI information, mapping the one path of CQI information into a first spectrum efficiency; if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to corresponding first spectrum efficiency, and summing the first spectrum efficiency corresponding to each path of CQI information to obtain the first spectrum efficiency corresponding to the two paths of CQI information.

The self-adaptive adjusting method and device for the target value of the downlink initial transmission block error rate (IBLER) provided by the embodiment of the invention determine the position attribute of UE (user equipment), wherein the position attribute is a far point or a near point; if the UE is a far point UE, adjusting a first IBLER target value to be a second IBLER target value, wherein the first IBLER target value is a system default IBLER target value, and the second IBLER target value is larger than the first IBLER target value; or, if the UE is a near-mid-point UE, when a ratio of a small transport block (Trans port b1ock, TB) scheduled by the UE is greater than or equal to a preset ratio threshold, adjusting the first IBLER target value to be the second IBLER target value, where a small TB block is a TB block in which a size TBs of a transport block is smaller than a preset TBs threshold. Therefore, the network side equipment can realize self-adaptive adjustment of the IBLER target value in a far point user scene and a near point small packet service scene, and the effect of improving the spectrum efficiency in the service scene of scheduling small data packets by far point users or near point users is achieved.

Drawings

Fig. 1 is a flowchart of a method for adaptively adjusting a target value of an IBLER of a downlink initial transmission block error rate according to an embodiment of the present invention;

fig. 2 is a flowchart of another adaptive adjustment method for an IBLER target value of a downlink initial block error rate according to an embodiment of the present invention;

fig. 3 is a schematic diagram of an adaptive adjustment apparatus for a downlink initial block error rate IBLER target value according to an embodiment of the present invention;

fig. 4 is a schematic diagram of another adaptive adjustment apparatus for a downlink initial block error rate IBLER target value according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a network device according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, interfaces, techniques, etc., in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

The techniques described herein may be used for various mobile communication systems that support CQI adjustment, such as LTE systems.

The IBLER adaptive adjustment method provided by the embodiment of the present invention can be applied to a scenario where network side equipment, such as a base station, adjusts CQI in a mobile communication network system supporting CQI adjustment when actually applied. In the application scenario provided by the embodiment of the present invention, the base station may determine whether the service scenario is a far-point user service scenario or a medium-near point packet service scenario, and if the service scenario is the far-point user service scenario or the medium-near point packet service scenario, adjust the first IBLER target value to be a second IBLER target value, where the first IBLER target value is a system-default IBLER target value, and the second IBLER target value is greater than the first IBLER target value. Therefore, the IBLER target value can be adaptively adjusted according to the service scene of the user equipment, and the spectrum efficiency of the remote point user or the near point user in the service scene of scheduling the small data packet is improved.

The medium-near point packet service scenario in this application document is a scenario in which the size of most of the TB blocks in the TB blocks scheduled by the medium-near point user equipment is smaller than a preset value, where "most of the TB blocks" may be measured by the ratio of the number of the TB blocks whose size is smaller than the preset value to the total number of the TB blocks, and for example, the ratio of the number of the small TB blocks to the total number of the TB blocks is greater than 60%, which may be called "most", and the specific value of this ratio is not limited in the present invention.

Fig. 1 is a flowchart of an adaptive adjustment method for a downlink initial block error rate IBLER target value according to an embodiment of the present invention, where an execution main body of the embodiment is a network side device, such as a base station, an RNC, and the like. As shown, this embodiment includes the steps of:

step 101, determining a location attribute of User Equipment (UE), wherein the location attribute is a far point or a near point.

The base station may refer to parameters such as Modulation and Coding Scheme (MCS), MCS filtering value, Signal to interference plus noise ratio (SINR), and the like of the UE to determine the location attribute of the UE.

Specifically, if the average MCS is smaller than a preset MCS threshold, determining the UE as a far-point UE, and if the average MCS is greater than or equal to the preset MCS threshold, determining the UE as a medium-near-point UE; or if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or if the SINR is smaller than the S INR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

The preset MCS threshold may be set to 4.5, or may be set to other values, and the specific value of the SINR threshold may also be set by the base station itself, which is not limited in the embodiment of the present invention.

In addition to determining the UE attribute according to the average MCS, or the MCS filter value, or the SINR, etc., a method of determining the UE user attribute using other parameters is also within the scope of the embodiments of the present invention.

If the UE is determined to be the remote point UE through judgment, executing step 102; if the UE is a near point UE, step 103 is executed.

Step 102, if the UE is a far-point UE, adjusting a first IBLER target value to be a second IBLER target value, where the first IBLER target value is a system default IBLER target value, and the second IBLER target value is greater than the first IBLER target value.

If the UE is a far-point UE, the IBLER target value may be raised, that is, the first IBLER target value is adjusted to be a second IBLER target value, where the second IBLER target value is greater than the first IBLER target value, so that retransmission is increased, the MCS for initial transmission is improved, and further, the improvement of the spectral efficiency corresponding to initial transmission may be achieved, and if the improvement of the spectral efficiency due to initial transmission can compensate for the loss due to the increased retransmission, the raising of the IBLER target value may bring a gain of the spectral efficiency.

The first IBLER target value is a default IBLER target value of the system, and is usually 10%, and the second IBLER target value may be set according to the system performance index requirement, and within a reasonable range, the second IBLER target value is greater than the first IBLER target value, for example, one of 20% to 40%, so that the IBLER target value can be raised.

Step 103, if the UE is a near-mid-point UE, when the ratio of the small transport block TB scheduled by the UE is greater than or equal to a preset ratio threshold, adjusting the first IBLER target value to be the second IBLER target value, where the small TB block is a TB block whose size TBs of the transport block is smaller than a preset TBs threshold.

If the UE is the middle-near point UE, whether the proportion of the small TB blocks scheduled by the UE is larger than or equal to a preset proportion threshold value is further judged, namely whether the service scene is a middle-near point small packet service scene is judged. Here, the preset proportional threshold and the preset TBS threshold may be set by the base station, and the size of the value is not limited in the embodiment of the present invention.

If the proportion of the small TB block is greater than or equal to the preset proportion threshold value, the service scene can be determined to be a medium-near point packet service scene, at this time, the first IBLER target value can be adjusted to be a second IBLER target value, and the IBLER target value is lifted.

Optionally, before adjusting the IBLER target value, it may also be determined whether the channel of the UE is an AWGN-like channel according to the CQI information. Wherein, judging whether the channel identified by the CQI information is an AWGN-like channel includes: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the UE last time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel. Since in a scenario where the channel of the UE is AWGN-like, if the IBLER target value is adjusted to be large, a negative gain of the spectral efficiency may result. Therefore, the embodiment of the invention can adjust the IBLER target value on the premise that the channel is a non-similar AWGN channel, thereby avoiding the condition of negative gain on the basis of improving the spectrum efficiency of a far-point user or a medium-near point user in a service scene of scheduling small data packets.

Optionally, before adjusting the I BLER target value, an average value of the number of RBs allocated to the UE may also be calculated; and further determining that the average value of the number of RBs allocated to the UE is greater than a preset RB threshold value. If the IBLER target value is adjusted to be larger, that is, the first IBLER target value of the default value of the system is adjusted to be the second IBLER target value, in the case that the average value of the number of RBs is not greater than the preset RB threshold value, a negative gain of the spectrum efficiency may be caused. Therefore, the embodiment of the invention can adjust the IBLER target value on the premise that the average value of the RB number is greater than the preset RB threshold value, thereby avoiding the negative gain condition on the basis of the effect of improving the spectrum efficiency of the service scene of scheduling small data packets by far-point users or near-point users.

Therefore, the embodiment of the invention determines the position attribute of the UE, wherein the position attribute is a far point or a near point; if the UE is a far point UE, adjusting a first IBLER target value to be a second IBLER target value, wherein the first IBLER target value is a system default IBLER target value, and the second IBLER target value is larger than the first IBLER target value; or, if the UE is a near-mid-point UE, when the ratio of a small TB block scheduled by the UE is greater than or equal to a preset ratio threshold, adjusting the first I BLER target value to be the second IBLER target value, where the small TB block is a TB block whose transport block size TBs is less than a preset TBs threshold. Therefore, the network side equipment can realize self-adaptive adjustment of the IBLER target value in a far point user scene and a near point small packet service scene, and the effect of improving the spectrum efficiency in the service scene of scheduling small data packets by far point users or near point users is achieved.

Fig. 2 is a flowchart of another adaptive adjustment method for an IBLER target value of a downlink initial block error rate according to an embodiment of the present invention, where an execution main body of the embodiment is a base station, and a method for the base station to adaptively adjust the IBLER target value of a far-point user or a short-range packet service is described in detail. As shown, this embodiment includes the steps of:

step 201, receiving CQI information reported by UE

The terminal in the activated state can continuously report the CQI information, so that the base station carries out scheduling calculation on the service data of the UE according to the CQI information.

Step 202, determining whether the channel corresponding to the CQI information is an AWGN-like channel.

And the base station judges the fluctuation of the time domain of the channel according to the received CQI information to identify the channel type, wherein the channel can be an AWGN-like channel or a non-AWGN-like channel.

Wherein, judging whether the channel identified by the CQI information is an AWGN-like channel includes: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the UE last time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

Specifically, the base station may map the CQI information to corresponding spectral efficiencies, map the CQI reported by the UE to corresponding spectral efficiencies, then calculate an absolute value of a difference between the spectral efficiencies calculated twice before and after, and may also use the same method to calculate an absolute value of a difference between the spectral efficiencies corresponding to the CQI twice before and after when the CQI information is received, which may be a historical absolute value, filter the absolute value of the difference between the spectral efficiencies calculated currently and the historical absolute value, so as to obtain a filter value, periodically sample the filter value, so as to obtain a sample value of the filter value, and determine whether the channel type of the channel corresponding to the UE is an AWGN-like channel according to the sample value of the filter value, that is, if the sample value of the filter value is smaller than a preset filter value threshold value, determine that the channel type of the channel corresponding to the UE is an AWGN-like channel, otherwise, the channel is a non. When mapping the CQI reported by the UE to the corresponding spectrum efficiency, if the UE reports one path of CQI, directly mapping the path of CQI to the spectrum efficiency; and if the UE reports two paths of CQI, adding and summing the frequency spectrum efficiency after each path of mapping. The method for the base station to judge the channel type according to the CQI information is described below by taking the CQI reported by the UE at the Mth time as CQI (M) and the CQI reported at the M-1 th time as CQI (M-1) as an example:

first, CQI is mapped to spectral efficiency. If UE reports one path of CQI, according to CQI (M, cwl) - > elf (M), mapping CQI information CQI (M, cwl) to spectrum efficiency eff (M); if two-path CQI is reported, according to CQI (M, cwl) - > Eff (M, cwl), the first path CQI information CQI (M, cwl) can be mapped to spectral efficiency Eff (M, cwl), according to CQ I (M, cw2) - > Eff (M, cw2), the second path CQI information CQI (M, cw2) can be mapped to spectral efficiency Eff (M, cw2), and according to Eff (M), cwl) + Eff (M, cw2), the sum Eff (M) of the two paths CQI information is calculated.

Secondly, the absolute value of the difference value of the spectrum efficiency obtained by mapping the CQI for the two times before and after is calculated. According to DeltaEff (M) ═ Eff (M) — Eff (M-1) |, the absolute value of the difference between the two spectral efficiencies before and after can be calculated.

Thirdly, filtering operation is carried out on the DeltaEff calculated in the second step. Assuming that the filter factor is a, a filter value of an absolute value of a difference between two previous and subsequent spectral efficiencies can be calculated from Del ta EffF il ter (M) — (1-a) × Del ta EffF il ter (M-1) + a Del ta Eff (M).

Fourthly, whether the channel is an AWGN-like channel or not is determined based on the sampling value of the filter value calculated by the third section. If the sampling value of the filtering value is smaller than the threshold value of the filtering value, the channel is judged to be similar AWGN channel, otherwise, the channel is judged to be non-similar AWGN channel.

If so, step 203 is performed, and if not, step 207 is performed.

Step 203, keeping the IBLER target value unchanged.

And if the channel is similar to the AWGN channel, keeping the IBLER target value unchanged, and adjusting the CQI according to the IBLER target value.

And 204, judging that the average value of the number of RBs distributed by the UE is greater than a preset RB threshold value.

Before determining whether the average value of the number of RBs allocated to the UE is greater than the preset RB threshold, the average value of the number of RBs allocated to the UE may be counted and calculated.

Since the IBLER target value is increased if the average value of the RB numbers is not greater than the preset RB threshold, that is, the first IBLER target value for adjusting the system default is the second IBLER target value, which may cause a negative gain of the spectrum efficiency, step 203 is performed if the average value of the RB numbers is not greater than the preset RB threshold, and step 207 is performed if the average value of the RB numbers is greater than the preset RB threshold.

Step 205, determine whether the UE user attribute is a remote UE.

The base station may refer to the average MCS, or the MCS filter value, or the SINR of the UE to determine the location attribute of the UE.

Specifically, if the average MCS is smaller than a preset MCS threshold, determining the UE as a far-point UE, and if the average MCS is greater than or equal to the preset MCS threshold, determining the UE as a medium-near-point UE; or if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or if the SINR is smaller than the SINR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

If the UE is a far point UE, step 207 is executed, and if the UE is a near point UE, step 206 is executed.

In step 206, it is determined that the ratio of the small TB blocks scheduled by the UE is greater than or equal to a preset ratio threshold.

If the UE is the middle-near point UE, whether the proportion of the small TB blocks scheduled by the UE is larger than or equal to a preset proportion threshold value is further judged, namely whether the service scene is a middle-near point small packet service scene is judged. Here, the preset proportional threshold and the preset TBS threshold may be set by the base station, and the size of the value is not limited in the embodiment of the present invention. If the UE. If the ratio is larger than the preset ratio threshold value, it is determined that the service scene is a medium-near point packet service, step 207 is executed, otherwise step 203 is executed.

And step 207, if the UE is a far point UE, adjusting the first IBLER target value to be a second IBLER target value, and if the UE is a medium-near point UE and the proportion of the small TB blocks scheduled by the UE is greater than a preset proportion threshold value, adjusting the first IBLER target value to be the second IBLER target value.

The first IBLER target value is a default IBLER target value of the system, for example, 10%, and the second IBLER target value may be set to 30%, so that the IBLER target value may be raised.

It should be noted that, in the above embodiment, since the determination of the channel (whether the channel is similar to AWGN channel), the determination of the user attribute (whether the channel is far-point UE or middle-near-point UE), and the determination of the size of the RB number average value are not in sequence, the corresponding determination in this embodiment is not divided into the execution sequence.

Correspondingly, an embodiment of the present invention further provides an adaptive adjustment device for a target value of a downlink initial block error rate, and fig. 3 is a schematic diagram of an adaptive adjustment device for a target value of a downlink initial block error rate IBLER according to an embodiment of the present invention, as shown in the figure, the present embodiment includes the following functional units:

a first determining unit 301, configured to determine a location attribute of a user equipment UE, where the location attribute is a far point or a near point, and transmit the location attribute of the UE to an adjusting unit.

The first determining unit 301 is specifically configured to: and determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

Specifically, the first determination unit 301 is configured to: if the average MCS is smaller than a preset MCS threshold value, determining that the UE is a far-point UE, and if the average MCS is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or, if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is greater than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or if the SINR is smaller than an SINR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the S INR threshold value, determining that the UE is a medium-near-point UE.

It should be noted that, in addition to determining the UE attribute according to the average MCS, the MCS filter value, the SINR, or the like, a method of determining the UE user attribute using other parameters is also within the protection scope of the embodiments of the present invention.

An adjusting unit 302, configured to receive the location attribute of the UE transmitted by the first determining unit, and if the UE is a far-point UE, adjust a first IBLER target value to a second IBLER target value, where the first IBLER target value is a system default IBLER target value, and the second IBLER target value is greater than the first IBLER target value; or, if the UE is a near-mid-point UE, when the ratio of a small transport block TB block scheduled by the UE is greater than or equal to a preset ratio threshold, adjusting the first IBLER target value to be the second I BLER target value, where the small TB block is a TB block whose transport block size TBs is smaller than a preset TBs threshold.

The first IBLER target value is a default IBLER target value of the system, for example, 10%, and the second IBLER target value may be set to one value in a value range, for example, 20% to 40%, or may be directly set to 30%, so that the IBLER target value can be raised.

Therefore, the device provided by the embodiment of the invention can realize self-adaptive adjustment of the IBLER target value in a far-point user scene and a medium-near point small packet service scene, and achieves the effect of improving the spectrum efficiency in the service scene of scheduling small data packets by far-point users or medium-near point users.

Referring to fig. 4, the apparatus provided in the embodiment of the present invention may further include a receiving unit 403, a second determining unit 404, a calculating unit 405, and a third determining unit 406, where:

a receiving unit 403, configured to receive CQI information of a channel quality indicator reported by the UE, and transmit the CQI information to a second determining unit.

A second determining unit 404, configured to receive the CQI information transmitted by the receiving unit, and determine, according to the CQI information, that a channel of the UE is a non-similar additive white gaussian noise AWGN channel.

The second determining unit 404 is specifically configured to: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

Specifically, the base station may map the CQI information to corresponding spectral efficiencies, map the CQI reported by the UE to corresponding spectral efficiencies, then calculate an absolute value of a difference between the spectral efficiencies calculated twice before and after, and may also use the same method to calculate an absolute value of a difference between the spectral efficiencies corresponding to the CQI twice before and after when the CQI information is received, which may be a historical absolute value, filter the absolute value of the difference between the spectral efficiencies calculated currently and the historical absolute value, so as to obtain a filter value, periodically sample the filter value, so as to obtain a sample value of the filter value, and determine whether the channel type of the channel corresponding to the UE is an AWGN-like channel according to the sample value of the filter value, that is, if the sample value of the filter value is smaller than a preset filter value threshold value, determine that the channel type of the channel corresponding to the UE is an AWGN-like channel, otherwise, the channel is a non.

The process of the second determining unit 404 executing the operation of mapping the CQI information to the first spectrum efficiency is specifically: if the CQI information is one channel of CQI information, mapping the channel of CQI information into a first spectrum efficiency; or if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to corresponding first spectrum efficiency, and summing the first spectrum efficiency corresponding to each path of CQI information to obtain the first spectrum efficiency corresponding to the two paths of CQI information.

A calculating unit 405, configured to calculate an average value of the number of RBs of the resource block allocated to the UE, and transmit the average value of the number of RBs allocated to the UE to a third determining unit.

The third determining unit 406 is configured to determine that the average value of the numbers of RBs allocated to the UE is greater than a preset RB threshold value

Therefore, the device provided by the embodiment of the invention can realize self-adaptive adjustment of the IBLER target value based on the RB tree, the channel type, the service scene and the like of the UE, and further can realize the improvement of the frequency spectrum efficiency corresponding to the initial transmission.

Correspondingly, the embodiment of the invention also provides network equipment, and the network equipment can be a base station. Fig. 5 is a schematic diagram of a network device according to an embodiment of the present invention. As shown, the apparatus comprises: a transceiver 501, a processor 502, and a memory 503. The system bus 504 is used to connect the transceiver 501, the processor 502, and the memory 503.

The memory 503 may be a permanent memory, such as a hard disk drive and a flash memory, the memory 503 is used for storing programs, the programs include an application program and a device driver program, and various threshold values provided by the embodiment of the present invention may also be stored in the memory 503. The application program can execute various functional modules of the method; the device drivers may be network and interface drivers.

At start-up, the processor 502, calling the program stored in the memory, is configured to perform:

Further, before the processor 502 is configured to adjust the first IBLER target value to be the second IBLER target value, the transceiver 501 is configured to receive channel quality indicator CQI information reported by the UE; the processor is further configured to determine that the channel of the UE is a non-similar additive white gaussian noise AWGN channel according to the CQI information.

Further, before the processor 502 is configured to adjust the first IBLER target value to the second IBLER target value, the processor is further configured to: calculating an average value of the number of RB (resource Block) allocated to the UE; and determining that the average value of the RB numbers distributed to the UE is larger than a preset RB threshold value.

Further, the processor 502 is configured to determine a location attribute of the UE, including: is used for determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) or the MCS filtering value or the signal to interference and noise ratio (SINR) of the UE

Further, the processor 502 is configured to determine the location attribute of the UE according to the average modulation and coding scheme MCS, or the filtered MCS value, or the signal to interference plus noise ratio SINR of the UE, and specifically includes: the method is used for determining that the UE is a far point UE if the average MCS is smaller than a preset MCS threshold value, and determining that the UE is a medium-near point UE if the average MCS is larger than or equal to the preset MCS threshold value; or, the MCS filter is configured to determine that the UE is a far-point UE if the MCS filter is smaller than the preset MCS threshold, and determine that the UE is a medium-near-point UE if the MCS filter is greater than or equal to the preset MCS threshold; or, the method is configured to determine that the UE is a far-point UE if the SINR is less than an SINR threshold, and determine that the UE is a medium-near-point UE if the SINR is greater than or equal to the SINR threshold.

Further, the processor is configured to determine, according to the CQI information, that the channel of the UE is a non-similar additive white gaussian noise AWGN channel, including: mapping the CQI information to a first spectral efficiency; calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information; and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

Further, processor 502 is configured to map the CQI information to a first spectral efficiency, comprising: if the CQI information is one path of CQI information, mapping the one path of CQI information into a first spectrum efficiency; or, if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to a corresponding first spectrum efficiency, and summing the first spectrum efficiencies corresponding to each path of CQI information to obtain the first spectrum efficiencies corresponding to the two paths of CQI information.

Therefore, the network side device provided by the embodiment of the invention can realize self-adaptive adjustment of the IBLER target value in a far point user scene and a medium and near point small packet service scene, and achieves the effect of improving the spectrum efficiency in the far point user scene or the medium and near point user service scene of scheduling small data packets.

Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A self-adaptive adjustment method for a target value of a downlink initial block error rate (IBLER) is characterized by comprising the following steps:

2. The adaptive downlink IBLER target value adjusting method according to claim 1, wherein before adjusting the first IBLER target value to the second IBLER target value, the method further comprises:

receiving Channel Quality Indicator (CQI) information reported by the UE;

and determining that the channel of the UE is a non-similar Additive White Gaussian Noise (AWGN) channel according to the CQI information.

3. The adaptive downlink IBLER target value adjusting method according to claim 1 or 2, wherein before adjusting the first IBLER target value to the second IBLER target value, the method further comprises:

calculating an average value of the number of RB (resource Block) allocated to the UE;

and determining that the average value of the RB numbers distributed to the UE is larger than a preset RB threshold value.

4. The adaptive downlink IBLER target value adjusting method according to any of claims 1 to 3, wherein the determining the location attribute of the UE comprises: and determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

5. The adaptive downlink IBLER target value adjusting method according to claim 4, wherein the determining the location attribute of the UE according to the average modulation and coding scheme MCS, or the MCS filter value, or the signal to interference plus noise ratio SINR of the UE specifically comprises:

if the average MCS is smaller than a preset MCS threshold value, determining that the UE is a far-point UE, and if the average MCS is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or,

if the MCS filtered value is smaller than the preset MCS threshold value, determining that the UE is a far-point UE, and if the MCS filtered value is larger than or equal to the preset MCS threshold value, determining that the UE is a medium-near-point UE; or,

and if the SINR is smaller than an SINR threshold value, determining that the UE is a far-point UE, and if the SINR is larger than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

6. The adaptive downlink IBLER target value adjusting method according to claim 2, wherein the determining, according to the CQI information, that the channel of the UE is a non-similar additive white gaussian noise AWGN channel specifically includes:

mapping the CQI information to a first spectral efficiency;

calculating a filtering value of an absolute value of a difference value between a first spectrum efficiency and a second spectrum efficiency and a historical absolute value, wherein the second spectrum efficiency is the spectrum efficiency corresponding to the CQI information reported by the user equipment at the previous time, and the historical absolute value is calculated according to the previously received CQI information;

and if the sampling value of the filtering value is larger than a preset filtering value threshold value, determining that the channel is not similar to the AWGN channel.

7. The adaptive downlink IBLER target value adjusting method of claim 6, wherein said mapping said CQI information to a first spectral efficiency comprises:

if the CQI information is one channel of CQI information, mapping the channel of CQI information into a first spectrum efficiency; or,

if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQI information to corresponding first spectrum efficiency, and summing the first spectrum efficiency corresponding to each path of CQI information to obtain the first spectrum efficiency corresponding to the two paths of CQI information.

8. A self-adaptive adjusting device for a target value of a downlink initial block error rate (IBLER) is characterized by comprising the following steps:

9. The adaptive downlink IBLER target value adjusting device according to claim 8, wherein the device further comprises a receiving unit, a second determining unit:

the receiving unit is configured to receive channel quality indicator CQI information reported by the UE, and transmit the CQI information to a second determining unit;

the second determining unit is configured to receive the CQI transmitted by the receiving unit, and determine, according to the CQ I information, that a channel of the UE is a non-similar additive white gaussian noise AWGN channel.

10. The adaptive downlink IBLER target value adjusting device according to claim 8 or 9, wherein the device further comprises a calculating unit, a third determining unit:

the calculating unit is used for calculating the average value of the RB numbers of the resource blocks distributed to the UE and transmitting the average value of the RB numbers distributed to the UE to the third determining unit;

the third determining unit is configured to determine that an average value of the numbers of RBs allocated to the UE is greater than a preset RB threshold.

11. The adaptive adjustment device for the downlink IBLER target value according to any one of claims 8 to 10, wherein the first determining unit is specifically configured to:

and determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

12. The adaptive adjustment device for the downlink IBLER target value according to claim 11, wherein the first determining unit is specifically configured to:

13. The adaptive adjustment device for the downlink IBLER target value according to claim 9, wherein the second determining unit is specifically configured to:

mapping the CQI information to a first spectral efficiency;

14. The apparatus according to claim 13, wherein the second determining unit is configured to map the CQI information to a first spectral efficiency, specifically:

if the CQI information is one path of CQ I information, mapping the one path of CQI information into a first spectrum efficiency; or,

15. A network device, the device comprising:

a processor;

a memory;

the memory is used for storing programs;

the processor calls the program stored in the memory to execute:

16. The network device of claim 15, further comprising:

the transceiver is used for receiving Channel Quality Indicator (CQI) information reported by the UE before the processor adjusts the first IBLER target value to be a second IBLER target value;

the processor is further configured to determine that the channel of the UE is a non-similar additive white gaussian noise AWGN channel according to the CQI information.

17. The network device of any of claims 15 or 16, wherein before the processor adjusts the first IBLER target value to the second IBLER target value, the processor is further configured to:

18. The network device of any of claims 15-17, wherein the processor is configured to determine a location attribute of a User Equipment (UE), comprising:

and the method is used for determining the position attribute of the UE according to the average Modulation and Coding Scheme (MCS) of the UE, or the filtering value of the MCS, or the signal to interference and noise ratio (SINR).

19. The network device of claim 18, wherein the processor is configured to determine the location attribute of the UE according to an average modulation and coding scheme, MCS, filter value, or signal to interference and noise ratio, SINR, of the UE, and specifically includes:

the method comprises the steps of determining that the UE is a far-point UE if the average MCS is smaller than a preset MCS threshold value, and determining that the UE is a medium-near-point UE if the average MCS is larger than or equal to the preset MCS threshold value; or,

the MCS filtering value is used for determining that the UE is a far point UE if the MCS filtering value is smaller than the preset MCS threshold value, and determining that the UE is a medium and near point UE if the MCS filtering value is larger than or equal to the preset MCS threshold value; or,

and if the SINR is smaller than an SINR threshold value, determining that the UE is a far-point UE, and if the SINR is greater than or equal to the SINR threshold value, determining that the UE is a medium-near-point UE.

20. The network device of claim 16, wherein the processor is configured to determine the channel of the UE to be a non-similar Additive White Gaussian Noise (AWGN) channel according to the CQI information, comprising:

mapping the CQI information to a first spectral efficiency;

21. The network device of claim 20, wherein the processor configured to map the CQI information to a first spectral efficiency comprises:

if the CQI information is one path of CQI information, mapping the one path of CQI information into a first spectrum efficiency; or,

and if the CQI information is two paths of CQI information, mapping each path of CQI information in the two paths of CQ I information to a corresponding first spectrum efficiency, and performing summation calculation on the first spectrum efficiencies corresponding to each path of CQI information to obtain the first spectrum efficiencies corresponding to the two paths of CQI information.