A method for optimizing one-way data service rate based on wireless network

Abstract

The present invention discloses a method for optimizing the rate of a unidirectional data service based on a wireless network, the method comprising: judging the type of unidirectional data service of the current wireless network; when the unidirectional data service type is a unidirectional data uplink service and, if then the actual downlink scheduling is, otherwise, the actual downlink scheduling is the actual number of downlink scheduling layers; when the unidirectional data service type is a unidirectional data downlink service and, if then the actual uplink scheduling is, otherwise, the actual uplink scheduling is the actual number of downlink scheduling layers; the present invention judges the service communication direction of the terminal user, and conservatively schedules the status report in the reverse direction of the service in the unidirectional service scenario, thereby reducing the block error rate of the status report transmission and improving the transmission rate of the user data.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to an optimization method for improving the rate of a unidirectional data service in which the data service carrying type is an AM (Acknowledged Mode) mode. Background Art

[0002] At present, in LTE (Long Term Evolution) and NR (New Radio), after the user equipment (UE) accesses the network, it can generally be divided into three types according to the direction of data flow: uplink unidirectional service, downlink unidirectional service and uplink and downlink simultaneous service. Usually for downlink services, the base station will determine the modulation coding mode and modulation order of downlink scheduling based on the CSI (Channel State Information) information reported by the terminal and the feedback information of the downlink HARQ (Hybrid Automatic Repeat Request), while for uplink services, the base station will determine the modulation coding mode and modulation order of uplink data scheduling based on the measurement of the SRS (Sounding reference signal) and PUSCH (Physical uplink shared channel) sent by the UE.

[0003] Generally, in order to improve the rate and reliability of system data transmission under the same bandwidth, industry vendors will dynamically adjust the modulation and coding mode and number of layers of data by using AMC (Adaptive Modulation and Coding) and MIMO (Multiple-Input Multiple-Output) methods to keep the target BLER (Block Error Ratio) within a normal range (such as within 10%), so as to achieve the best overall performance of the system. Although the block error rate requirement has little impact on the rate for UM services or simultaneous uplink and downlink service communications, it has a greater impact on AM unidirectional service transmission. For example, when the terminal performs unidirectional downlink services, since only a small number of status reports need to be uploaded in the uplink at this time, the delay of these status reports will greatly affect the data buffer size of the downlink transmission, thereby reducing the downlink data transmission rate, especially when the channel conditions change rapidly, each time the status report transmission and decoding of the downlink data fails, the delay of the status report will increase, thereby affecting the downlink service rate. Conversely, the delay of the uplink data status report will also affect the transmission rate of the uplink service data. Summary of the invention

[0004] Based on this, it is necessary to provide a method for optimizing the unidirectional data service rate based on a wireless network in response to the above technical problems.

[0005] An embodiment of the present invention provides a method for optimizing a unidirectional data service rate based on a wireless network, comprising:

[0006] Determine the unidirectional data service type of the current wireless network; wherein the unidirectional data service type includes: unidirectional data uplink service and unidirectional data downlink service;

[0007] Statistics on the uplink resource block RB utilization of the last N consecutive scheduling units Slot And downlink resource block RB utilization

[0008] Get the uplink scheduling MCS of the current scheduling unit Slot UL , Downlink Scheduling MCS DL , Uplink scheduling layer number Layer UL and downlink scheduling layer number Layer DL ;

[0009] Get the remaining buffer status report size BSR of the uplink data to be scheduled in the current scheduling unit Slot, recorded as And obtain the remaining buffer status report size BSR of the downlink data to be scheduled in the current scheduling unit Slot, recorded as

[0010] When the unidirectional data service type is a unidirectional data uplink service and When The actual downlink scheduling Otherwise, the actual downlink scheduling Actual downlink scheduling layer number

[0011] When the unidirectional data service type is unidirectional data downlink service and When The actual uplink scheduling Otherwise, the actual uplink scheduling Actual downlink scheduling layer number

[0012] Among them, THR DL THR is the downlink data buffer size threshold; R_DL_RB is the downlink resource block RB utilization threshold; Δ 1 THR is the offset value of the conservative scheduling of the downlink modulation and coding strategy MCS; UL THR is the uplink data buffer size threshold; R_UL_RBis the uplink resource block RB utilization threshold; Δ 2 It is the offset value of conservative scheduling of uplink modulation and coding strategy MCS.

[0013] Further, the determining the type of unidirectional data service of the current wireless network specifically includes:

[0014] Get the scheduling transmission block size Tbsize and buffer status report size BSR of the latest N consecutive scheduling units Slot in the uplink, and calculate the average value of the uplink transmission block size Tbsize respectively and the average value of the uplink buffer status report size BSR

[0015] Get the scheduling transmission block size Tbsize and buffer status report size BSR of the last N consecutive scheduling units Slot in the downlink, and calculate the average value of the downlink transmission block size Tbsize respectively and the average value of the downlink buffer status report size BSR

[0016] when and When , the unidirectional data service type is unidirectional data uplink service;

[0017] when and When , the unidirectional data service type is unidirectional data downlink service;

[0018] in, is the first threshold value of the uplink transmission block size Tbsize, is the second threshold value of the uplink transmission block size Tbsize, is the first threshold value of the uplink buffer status report size BSR, is the second threshold value of the uplink buffer status report size BSR, is the first threshold value of the downlink transmission block size Tbsize, is the second threshold value of the downlink transmission block size Tbsize, is the first threshold value of the downlink buffer status report size BSR, is a second threshold value of a downlink buffer status report size BSR; and

[0019] Furthermore, the average value of the uplink transmission block size Tbsize is calculated and the average value of the uplink buffer status report size BSR Specifically include:

[0020] The current air interface time is n, then the scheduling transmission block size Tbsize and the buffer status report size BSR of the latest N consecutive scheduling units Slot in the uplink are respectively and Where, i=N+1,N,…,1;

[0021] The calculated average values ​​are and

[0022] Furthermore, the average value of the downlink transmission block size Tbsize is calculated and the average value of the downlink buffer status report size BSR Specifically include:

[0023] The current air interface time is n, and the scheduling Tbsize and BSR of the last N consecutive downlink slots are and Where, i=N+1,N,…,1;

[0024] The calculated average values ​​are and

[0025] Furthermore, an embodiment of the present invention provides a method for optimizing a unidirectional data service rate based on a wireless network, further comprising:

[0026] According to the uplink and downlink adaptive modulation and coding AMC function, obtain the uplink scheduling MCS of the current scheduling unit Slot UL and downlink scheduling MCS DL , Uplink scheduling layer number Layer UL and downlink scheduling layer number Layer DL .

[0027] Compared with the prior art, the above-mentioned method for optimizing the one-way data service rate based on the wireless network provided by the embodiment of the present invention has the following beneficial effects:

[0028] The purpose of the present invention is to provide a scheduling method that can overcome the above technical problems, so that the block error rate of status report transmission can be reduced, thereby improving the transmission rate of unidirectional service data. Specifically, the present invention determines the service communication direction of the terminal user, and conservatively schedules the status report in the opposite direction of the service in a unidirectional service scenario, thereby reducing the block error rate of status report transmission and improving the transmission rate of user data. It has a wide range of use prospects in various situations such as video backhaul in a private network environment or user data downloading, thereby improving the user's satisfaction with the use of wireless networks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1The present invention is a flowchart of a method for optimizing a one-way data service rate based on a wireless network provided in an embodiment. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] In one embodiment, a method for optimizing a one-way data service rate based on a wireless network is provided, and the method specifically includes:

[0032] Step 1: If the current air interface time is n, the scheduling Tbsize and BSR of the latest N consecutive uplink slots are and Among them, i=N+1,N,…,1, and the average value is calculated and Unit: Bytes.

[0033] Step 2: The scheduling Tbsize and BSR of the last N consecutive downlink slots are and Where i = N + 1, N, ..., 1, the average value is calculated and Unit: Bytes.

[0034] Step 3: Determine the business direction type based on the above calculated value. and When , the current service is considered to be a one-way uplink service; and when and When , the current service is considered to be a unidirectional downlink service, where THR1 and THR2 are the threshold values ​​for the system to determine the direction of uplink and downlink services.

[0035] Step 4: Count the downlink RB utilization of the last N consecutive slots and uplink RB utilization

[0036] Step 5: Calculate the uplink scheduling MCS of the current slot according to the uplink and downlink AMC functions UL and downlink scheduling MCS DL , the uplink scheduling layer is Layer UL and the number of downlink scheduling layers is Layer DL .

[0037] Step 6: record the remaining BSR of the uplink data to be scheduled in the current slot as The remaining BSR of the downlink data to be scheduled is recorded as

[0038] Step 7: The current service type is uplink unidirectional service and When The actual downlink scheduling Otherwise, the actual downlink scheduling Simultaneous Scheduling

[0039] Step 8: The current service type is downlink unidirectional service and When The actual uplink scheduling Otherwise, the actual uplink scheduling Simultaneous Scheduling

[0040] Note: THR and Δ are the threshold value and MCS offset used by the system to determine the service direction, respectively.

[0041] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A method for optimizing the rate of one-way data services based on a wireless network, characterized in that: include: Determine the unidirectional data service type of the current wireless network; wherein the unidirectional data service type includes: unidirectional data uplink service and unidirectional data downlink service; Statistics on the uplink resource block RB utilization of the last N consecutive scheduling units Slot And downlink resource block RB utilization Get the uplink scheduling MCS of the current scheduling unit Slot UL , Downlink Scheduling MCS DL , Uplink scheduling layer number Layer UL and downlink scheduling layer number Layer DL ; Get the remaining buffer status report size BSR of the uplink data to be scheduled in the current scheduling unit Slot, recorded as And obtain the remaining buffer status report size BSR of the downlink data to be scheduled in the current scheduling unit Slot, recorded as When the unidirectional data service type is a unidirectional data uplink service and When The actual downlink scheduling Otherwise, the actual downlink scheduling Actual downlink scheduling layer number When the unidirectional data service type is unidirectional data downlink service and When The actual uplink scheduling Otherwise, the actual uplink scheduling Actual downlink scheduling layer number Among them, THR DL THR is the downlink data buffer size threshold; R_DL_RB is the downlink resource block RB utilization threshold; Δ1 is the offset value of the downlink modulation and coding strategy MCS conservative scheduling; THR UL THR is the uplink data buffer size threshold; R_UL_RB is the uplink resource block RB utilization threshold; Δ2 is the offset value of the uplink modulation and coding strategy MCS conservative scheduling; The determining of the unidirectional data service type of the current wireless network specifically includes: Get the scheduling transmission block size Tbsize and buffer status report size BSR of the latest N consecutive scheduling units Slot in the uplink, and calculate the average value of the uplink transmission block size Tbsize respectively and the average value of the uplink buffer status report size BSR Get the scheduling transmission block size Tbsize and buffer status report size BSR of the last N consecutive scheduling units Slot in the downlink, and calculate the average value of the downlink transmission block size Tbsize respectively and the average value of the downlink buffer status report size BSR when and When , the unidirectional data service type is unidirectional data uplink service; when and When , the unidirectional data service type is unidirectional data downlink service; in, is the first threshold value of the uplink transmission block size Tbsize, is the second threshold value of the uplink transmission block size Tbsize, is the first threshold value of the uplink buffer status report size BSR, is the second threshold value of the uplink buffer status report size BSR, is the first threshold value of the downlink transmission block size Tbsize, is the second threshold value of the downlink transmission block size Tbsize, is the first threshold value of the downlink buffer status report size BSR, is a second threshold value of a downlink buffer status report size BSR; and 2. The method for optimizing the one-way data service rate based on a wireless network according to claim 1, characterized in that: The calculation of the average value of the uplink transmission block size Tbsize and the average value of the uplink buffer status report size BSR Specifically include: The current air interface time is n, then the scheduling transmission block size Tbsize and the buffer status report size BSR of the latest N consecutive scheduling units Slot in the uplink are respectively and Where, i=N+1,N,…,1; The calculated average values ​​are and 3. The method for optimizing the one-way data service rate based on a wireless network according to claim 1, characterized in that: The average value of the downlink transmission block size Tbsize is calculated and the average value of the downlink buffer status report size BSR Specifically include: The current air interface time is n, then the scheduling transmission block size Tbsize and the buffer status report size BSR of the latest N consecutive scheduling units Slot in the downlink are respectively and Where, i=N+1,N,…,1; The calculated average values ​​are and 4. The method for optimizing the one-way data service rate based on a wireless network according to claim 1, characterized in that: Also includes: According to the uplink and downlink adaptive modulation and coding AMC function, obtain the uplink scheduling MCS of the current scheduling unit Slot UL and downlink scheduling MCS DL , Uplink scheduling layer number Layer UL and downlink scheduling layer number Layer DL .

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