CN103702420B

CN103702420B - Method and system for scheduling uplink sub-frames

Info

Publication number: CN103702420B
Application number: CN201210365827.3A
Authority: CN
Inventors: 刘阳; 刘蓉
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-09-27
Filing date: 2012-09-27
Publication date: 2017-04-12
Anticipated expiration: 2032-09-27
Also published as: CN103702420A

Abstract

The invention provides a method and a system for scheduling uplink sub-frames to solve the problem of limited cell capacity caused by the fact that the existing scheduling method is incapable of scheduling more users due to the limited PDCCH (Physical Downlink Control Channel) resources resulting from PDCCH resource waste. The method provided by the invention can simultaneously schedule two uplink sub-frames in relative to one downlink sub-frame according to different to-be-transmitted data by selecting different scheduling manners. Single frame scheduling is preferred when the to-be-transmitted data is transmitted for the first time; multi-frame scheduling is preferred when the to-be-transmitted data is retransmitted. By dynamically selecting the scheduling manners, the method can bear resources allocated to two different uplink sub-frames by issues a PDCCH when adopting multi-frame scheduling, thereby saving PDCCH resources, scheduling more users, and improving the cell capacity.

Description

Method and system for scheduling uplink subframe

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and a system for scheduling an uplink subframe.

Background

The Long Term Evolution (LTE) project is the Evolution of 3G, LTE is a transition between 3G and 4G technologies, is a global standard of 3.9G, improves and enhances the 3G over-the-air access technology, and adopts Orthogonal Frequency Division Multiplexing (OFDM) and Multiple-Input Multiple-output (MIMO) technologies as the only standards for wireless network Evolution. Under the frequency spectrum bandwidth of 20MHz, the peak rates of 326Mbit/s downlink and 86Mbit/s uplink can be provided, the performance of cell edge users is improved, the cell capacity is improved, and the system delay is reduced.

The LTE system is divided into a Frequency Division Duplex (FDD) system and a Time Division Duplex (TDD) system, and thus, two radio frame structures, i.e., type1 and type2, are defined in 3GPP TS 36.211, and are respectively applied to the FDD system and the TDD system, and the radio frame structures are respectively shown in fig. 1 and fig. 2.

For the type2 radio frame structure of the LTE-TDD system, the scheduling timing rule is that the downlink subframe schedules itself, and at the same time, some uplink subframe may be scheduled. When a subframe is scheduled, resource allocation is performed first, and after the resource allocation is successful, the base station issues a Physical Downlink Control Channel (PDCCH) to User Equipment (UE) with successfully allocated resource, so as to carry the resource allocated to the scheduled subframe.

However, under the condition of some uplink and downlink subframe configurations, a situation that one downlink subframe schedules two uplink subframes at the same time may occur, and for this situation, the base station may successively issue two PDCCHs to the same UE at the same downlink subframe scheduling time, and respectively carry resources allocated to two different uplink subframes, so as to complete scheduling of the two uplink subframes. However, this method wastes PDCCH resources to a certain extent, and therefore, more users cannot be scheduled due to the limited PDCCH resources, resulting in limited cell capacity.

Disclosure of Invention

The technical problem to be solved by the application is to provide a method and a system for scheduling an uplink subframe, so as to solve the problem that the existing scheduling method wastes PDCCH resources, so that more users cannot be scheduled due to the limited PDCCH resources, and the cell capacity is limited.

In order to solve the above problem, the present application discloses a method for scheduling uplink subframes, where the uplink subframes include a first uplink subframe and a second uplink subframe, and the method includes: judging whether the data to be transmitted is initial transmission data or retransmission data; if the data is initially transmitted, entering an initial transmission process, and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling; if the condition for executing single-frame scheduling is met, scheduling the first uplink subframe or the second uplink subframe to preferentially execute single-frame scheduling; if the condition for executing single-frame scheduling is not met, scheduling the first uplink subframe and the second uplink subframe to execute multi-frame scheduling;

if the data is retransmitted, entering a retransmission process, and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling; if the condition of executing multi-frame scheduling is met, scheduling the first uplink subframe and the second uplink subframe to preferentially execute multi-frame scheduling; and if the condition for executing the multi-frame scheduling is not met, scheduling the first uplink subframe or the second uplink subframe to execute single-frame scheduling.

The step of entering the initial transmission process and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling comprises the following steps: obtaining the total quantity D of the initial transmission data_init(ii) a Allocating resources for the first uplink subframe or the second uplink subframe, and recording the allocated resources as R1 or R2; acquiring an initial transfer data volume D1 carried by the allocated resource R1 or an initial transfer data volume D2 carried by the allocated resource R2; calculating the D_initDifference D from D1_wait1 or D_initDifference D from D2_wait2, judging whether the difference value is 0; when the difference D_waitWhen 1 is 0, determining that the first uplink subframe satisfies the strip for executing single frame schedulingA member; when the difference D_waitAnd 2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling.

The step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling further includes: when D is present_wait1 and D_waitWhen 2 is not 0, D is judged_waitWhether the 1/D1 is smaller than a preset threshold value; if D is_waitIf 1/D1 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans1D1; judgment of D_waitWhether 2/D2 is smaller than a preset threshold value; if D is_waitIf 2/D2 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans2D2; comparing said D_trans1And D_trans2The size of (d); when D is present_trans1Greater than D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is equal to D_trans2And then determining that the first uplink subframe or the second uplink subframe meets the condition for executing the single frame scheduling.

The step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling further includes: if D is_waitIf the 2/D2 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe; if no resource completely consistent with the resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe, recording the maximum value D of the bearable initial transmission data_trans2Step D2; if the idle resources of the first uplink subframe have resources completely consistent with the resources R2 of the second uplink subframe, recording the maximum value D of the initial transmission data which can be borne_trans2＝min(2*D2，D_init) (ii) a Comparing said D_trans1And D_trans2The size of (d); when D is present_trans1Greater than or equal to D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2And determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling.

The step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling further includes: if D is_waitIf the 1/D1 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in idle resources of a second uplink subframe; if no resource completely consistent with the resource R1 of the first uplink subframe exists in the idle resources of the second uplink subframe, recording the maximum value D of the bearable initial transmission data_trans1Step D1; if the idle resources of the second uplink subframe have resources completely consistent with the resources R1 of the first uplink subframe, recording the maximum value D of the initial transmission data which can be borne_trans1＝min(2*D1，D_init)。

Wherein, the maximum value D of the bearable initial transmission data is recorded_trans1＝min(2*D1，D_init) Then also comprises the following steps: judgment of D_waitWhether 2/D2 is smaller than a preset threshold value; if D is_waitIf the 2/D2 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe; if D is_waitIf the 2/D2 is less than a preset threshold value, or no resource completely consistent with the resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe, recording the maximum value D of the bearable initial transmission data_trans2D2; comparing said D_trans1And D_trans2The size of (d); when D is present_trans1Greater than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling; when D is present_trans1Less than or equal to D_trans2And then, determining that the second uplink subframe meets the condition for executing the single-frame scheduling.

The step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling further includes: if the idle resources of the first uplink subframe have resources completely consistent with the resources R2 of the second uplink subframe, recording the maximum value D of the initial transmission data which can be borne_trans2＝min(2*D2，D_init) (ii) a And determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling.

Wherein, the step of scheduling the first uplink subframe or the second uplink subframe to preferentially execute single frame scheduling comprises: when the first uplink subframe meets the condition for executing single-frame scheduling, scheduling the first uplink subframe according to the allocated resource R1; and when the second uplink subframe meets the condition for executing the single-frame scheduling, scheduling the second uplink subframe according to the allocated resource R2.

Wherein the step of scheduling the first uplink subframe and the second uplink subframe to perform multi-frame scheduling comprises: comparing said D_trans1And D_trans2The size of (d); when D is present_trans1Greater than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R1; when D is present_trans1Is less than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R2; when D is present_trans1Is equal to D_trans2The first uplink subframe and the second uplink subframe are scheduled according to the allocated resource R1 or R2.

The condition for executing the multi-frame scheduling is that both the first uplink subframe and the second uplink subframe comprise retransmission data, and any one uplink subframe meets a fourth condition; the fourth condition is: when the resource is allocated to any uplink subframe, the resource allocation is successful; and resources completely consistent with the resources of any uplink subframe exist in the idle resources of the other uplink subframe; and the resource of any uplink subframe can bear the retransmission data of another uplink subframe.

The step of entering the retransmission process and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling includes: when the first uplink subframe and the second uplink subframe comprise retransmission data, allocating resources in the first uplink subframe, and setting a resource allocation identifier as false; if the resource allocation for the first uplink subframe is successful, recording the allocated resource as R1, and setting a resource allocation identifier as true; judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in the idle resources of the second uplink subframe; if the idle resources of the second uplink subframe have resources completely consistent with the resources R1 of the first uplink subframe, judging whether the resources R1 of the first uplink subframe can bear the retransmission data of the second uplink subframe; if the resource R1 of the first uplink subframe can carry the retransmission data of the second uplink subframe, it is determined that the condition for performing multi-frame scheduling is satisfied.

Wherein, the step of judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling further comprises: if the resource allocation for the first uplink subframe is unsuccessful, or no resource completely consistent with the resource of the first uplink subframe exists in the idle resource of the second uplink subframe, or the resource of the first uplink subframe cannot bear the retransmission data of the second uplink subframe, allocating the resource in the second uplink subframe; if the resource allocation for the second uplink subframe is successful, recording the allocated resource as R2; judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe; if the idle resources of the first uplink subframe have resources completely consistent with the resources R2 of the second uplink subframe, judging whether the resources R2 of the second uplink subframe can bear the retransmission data of the first uplink subframe; and if the resource R2 of the second uplink subframe can bear the retransmission data of the first uplink subframe, determining that the condition of executing multi-frame scheduling is met.

When the resource allocation for the second uplink subframe is unsuccessful, the step of scheduling the first uplink subframe or the second uplink subframe to execute single frame scheduling comprises: judging whether the resource allocation identifier is true, if so, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; when there is no resource completely consistent with the resource of the second uplink subframe in the idle resource of the first uplink subframe, or the resource of the second uplink subframe cannot bear the retransmission data of the first uplink subframe, the step of scheduling the first uplink subframe or the second uplink subframe to execute single frame scheduling includes: judging whether the resource allocation identifier is true; if so, respectively acquiring the times of retransmission of the retransmission data of the first uplink subframe and the times of retransmission of the retransmission data of the second uplink subframe; when the retransmission times of the retransmission data of the first uplink subframe are more than or equal to the retransmission times of the retransmission data of the second uplink subframe, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; when the number of times that the retransmission data of the first uplink subframe has been retransmitted is less than the number of times that the retransmission data of the second uplink subframe has been retransmitted, scheduling the second uplink subframe according to resource R2 of the second uplink subframe; if not, the second uplink subframe is scheduled according to the resource R2 of the second uplink subframe.

Preferably, before determining whether the data to be transmitted is the initial transmission data or the retransmission data, the method further includes: and sequencing the priority of each user equipment, and executing the process of scheduling the uplink subframe for the user equipment with the highest priority.

Preferably, the first uplink subframe and/or the second uplink subframe are/is scheduled through a downlink subframe n, wherein n is a sequence number of the downlink subframe; the first uplink subframe is n + k, and the second uplink subframe is n + 7; wherein k is a time delay between the downlink subframe n and the first uplink subframe n + k, and the time delay is in units of subframes; or the first uplink subframe is n +7, and the second uplink subframe is n + k; and k is the time delay between the downlink subframe n and the second uplink subframe n + k, and the time delay takes a subframe as a unit.

The present application also provides a system for scheduling uplink subframes, where the uplink subframes include a first uplink subframe and a second uplink subframe, and the system includes:

the data to be transmitted judging module is used for judging whether the data to be transmitted is initial transmission data or retransmission data;

the initial transmission judging module is used for entering an initial transmission process and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling when the judgment result of the to-be-transmitted data judging module is initial transmission data;

the initial transmission single frame scheduling module is used for scheduling the first uplink subframe or the second uplink subframe to preferentially execute single frame scheduling when the initial transmission judging module judges that the condition for executing the single frame scheduling is met;

the initial transmission multi-frame scheduling module is used for scheduling the first uplink sub-frame and the second uplink sub-frame to execute multi-frame scheduling when the initial transmission judging module judges that the condition for executing single-frame scheduling is not met;

the retransmission judging module is used for entering a retransmission flow and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling or not when the judgment result of the to-be-transmitted data judging module is retransmission data;

the retransmission multi-frame scheduling module is used for scheduling the first uplink sub-frame and the second uplink sub-frame to preferentially execute multi-frame scheduling when the retransmission judging module judges that the condition for executing multi-frame scheduling is met;

and the retransmission single-frame scheduling module is used for scheduling the first uplink subframe or the second uplink subframe to execute single-frame scheduling when the retransmission judging module judges that the condition for executing multi-frame scheduling is not met.

Wherein, the initial transmission judging module comprises:

a total amount obtaining submodule for obtaining the total amount D of the initial transmission data_init；

The first transmission distribution submodule is used for distributing resources for the first uplink subframe or the second uplink subframe and recording the distributed resources as R1 or R2;

a load-bearing data volume obtaining submodule, configured to obtain an initial transfer data volume D1 borne by the allocated resource R1 or an initial transfer data volume D2 borne by the allocated resource R2;

a difference judgment submodule for calculating D_initDifference Dw from D1_ait1 or D_initDifference D from D2_wait2, judging whether the difference value is 0;

a difference value determining sub-module for determining the difference value D_waitWhen 1 is 0, determining that the first uplink subframe meets the condition of executing single frame scheduling; when the difference D_waitAnd 2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling.

Wherein, the initial transmission judging module further comprises:

a first threshold judgment sub-module for D_wait1 and D_waitWhen 2 is not 0, D is judged_waitWhether the 1/D1 is smaller than a preset threshold value;

a first initial record submodule for being read_waitWhen 1/D1 is smaller than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans1＝D1；

A second threshold judgment submodule for judging D_waitWhether 2/D2 is smaller than a preset threshold value;

a second initial record submodule for being read_waitWhen the 2/D2 is smaller than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans2＝D2；

A first comparison submodule for comparing D of the first initial record submodule record_trans1And D of the second initial recording submodule record_trans2The size of (d);

a first initial pass determination submodule for determining whether the comparison result of the first comparison submodule is D_trans1Greater than D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when the comparison result of the first comparison submodule is D_trans1Is less than D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling; when the comparison result of the first comparison submodule is D_trans1Is equal to D_trans2And then determining that the first uplink subframe or the second uplink subframe meets the condition for executing the single frame scheduling.

The condition for executing the multi-frame scheduling is that both the first uplink subframe and the second uplink subframe comprise retransmission data, and any one uplink subframe meets a fourth condition;

the fourth condition is:

when the resource is allocated to any uplink subframe, the resource allocation is successful; and resources completely consistent with the resources of any uplink subframe exist in the idle resources of the other uplink subframe; and the resource of any uplink subframe can bear the retransmission data of another uplink subframe.

Wherein, the retransmission judging module comprises:

the first retransmission allocation submodule is used for allocating resources in the first uplink subframe and setting a resource allocation identifier as false when the first uplink subframe and the second uplink subframe both comprise retransmission data;

the first retransmission recording submodule is used for recording the allocated resource as R1 and setting the resource allocation identifier as true when the resource allocation is successful for the first uplink subframe;

a first retransmission idle resource judgment submodule, configured to judge whether a resource completely consistent with resource R1 of the first uplink subframe exists in the idle resources of the second uplink subframe;

a first retransmission bearer data judgment submodule, configured to, when a judgment result of the first retransmission idle resource judgment submodule is present, judge whether the resource R1 of the first uplink subframe can bear retransmission data of the second uplink subframe;

and the first retransmission determining submodule is used for determining that the condition for executing multi-frame scheduling is met when the judgment result of the first retransmission bearing data judging submodule is yes.

Compared with the prior art, the method has the following advantages:

according to the method and the device, aiming at the condition that one downlink subframe simultaneously schedules two uplink subframes, different scheduling modes are selected to schedule the uplink subframes according to different data to be transmitted. When the data to be transmitted is initial transmission data, judging whether the scheduled uplink subframe meets the condition for executing single-frame scheduling, and if the condition for executing single-frame scheduling is met, preferentially executing single-frame scheduling; and when the data to be transmitted is retransmission data, judging whether the scheduled uplink subframe meets the condition of executing multi-frame scheduling, and if so, preferentially executing the multi-frame scheduling.

Due to the fact that the multi-frame scheduling process is complex, the multi-frame scheduling is used for the passive use of the initial transmission data, on one hand, the processing complexity of the base station equipment can be obviously reduced, especially under the condition that small data volume services are more, on the other hand, the better carrying capacity can be selected between the single-frame scheduling and the multi-frame scheduling in a self-adaptive mode, and therefore system performance is optimized; and for retransmission data, multi-frame scheduling is actively used, so that the data transmission efficiency is improved, the service delay is reduced, and the user perception is improved. According to the method and the device, through a dynamic selection scheduling mode, when multi-frame scheduling is adopted, resources allocated to two different uplink subframes can be borne by issuing one PDCCH, so that PDCCH resources can be saved, more users can be scheduled, and the cell capacity is increased.

Drawings

FIG. 1 is a diagram illustrating a structure of a radio frame type1 in the prior art;

FIG. 2 is a diagram illustrating a structure of a radio frame type2 in the prior art;

FIG. 3 is a diagram illustrating a sub-frame scheduling timing sequence in the prior art;

fig. 4 is a flowchart of a method for scheduling an uplink subframe according to a first embodiment of the present application;

fig. 5 is a flowchart of a method for scheduling an uplink subframe according to a second embodiment of the present application;

FIG. 6 is a flow chart of the second embodiment of the present application;

fig. 7 is a retransmission flowchart according to a second embodiment of the present application;

fig. 8 is a flowchart of a method for scheduling an uplink subframe according to a third embodiment of the present application;

fig. 9 is a block diagram of a system for scheduling an uplink subframe according to a fourth embodiment of the present application.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, the present application is described in further detail with reference to the accompanying drawings and the detailed description.

The method and the system for scheduling the uplink subframe can bear the resources allocated to two different uplink subframes by issuing one PDCCH when multi-frame scheduling is adopted through a dynamic selection scheduling mode, so that PDCCH resources can be saved, more users can be scheduled, and the cell capacity is increased.

The method for scheduling the uplink subframe is used for processing the condition that one downlink subframe schedules two different uplink subframes simultaneously in an LTE-TDD system. The radio frame structure applied to the LTE-TDD system is a type2 radio frame defined in 3GPP TS 36.211, the length of the radio frame is 10s, the radio frame is divided into 10 subframes with the length of 1s, and uplink and downlink data are transmitted on different subframes in the same frame. In the LTE-TDD system, 7 different uplink and downlink subframe configurations are defined for a type2 radio frame structure, as shown in table 1:

TABLE 1

Wherein, an Uplink-downlink configuration column indicates configuration numbers of Uplink and downlink subframe configurations, which are respectively configuration 0, configuration 1,. configuration 7;

a Downlink-to-Uplink Switch-point periodicity column indicates an Uplink and Downlink subframe switching period (TDD distinguishes Uplink and Downlink according to time, so that unidirectional resources are discontinuous in time, Uplink is performed for a period of time, Downlink is performed for a period of time, and switching is a conversion process of Uplink and Downlink), wherein the Uplink and Downlink subframe switching period is 5ms or 10 ms;

subframe number indicates the sequence number of the Subframe, which is Subframe 0, Subframe 1,. Subframe 9, "D" indicates that the Subframe is a downlink Subframe, "U" indicates that the Subframe is an uplink Subframe, "S" indicates a special Subframe, which is also a downlink Subframe. Corresponding to the type2 frame structure shown in fig. 2, the sub-frames including dwpts (downlink pilot time slot), gp (guard period), and uppts (uplink pilot time slot) are special sub-frames.

Corresponding to the configuration of 7 different uplink and downlink subframes in table 1, the corresponding scheduling timing sequence is shown in table 2:

TABLE 2

The rule of scheduling timing is that a downlink subframe schedules itself, and at the same time, a certain uplink subframe may be scheduled, and a time point corresponding to the scheduled uplink subframe always lags behind a time point corresponding to the scheduled subframe. In table 2, a number indicated by "Scheduling subframe number" indicates a subframe number in the corresponding uplink and downlink subframe configuration, where the subframe number is capable of performing Scheduling and transmitting an uplink and downlink grant frame; the corresponding number under each Subframe sequence number in "Subframe number" indicates which Subframe the Subframe is scheduled in.

For example, for the uplink and downlink subframe configuration 1, subframe 0 is a downlink subframe, and schedules itself, that is, subframe 0; the subframe 1 is a downlink subframe, schedules itself, namely the subframe 1, and simultaneously schedules an uplink subframe 7 in the wireless frame; subframe 2 is an uplink subframe and downlink subframe 5 or 6 of the previous radio frame is scheduled.

As can be seen from table 2, only when the uplink and downlink subframe configuration is 0, a situation occurs in which one downlink subframe simultaneously schedules two uplink subframes. For example, the downlink subframe n may schedule the uplink subframe n + k or the uplink subframe n +7 (specifically, the downlink subframe n is controlled by a UL index (2bit) field in the downlink control signaling DCI Format0 to schedule only the uplink subframe n + k or only the uplink subframe n +7, or to schedule both the uplink subframe n + k and the uplink subframe n + 7). Wherein n is the serial number of the downlink subframe, k is the time delay between the downlink subframe n and the scheduled uplink subframe, and the time delay takes the subframe as a unit.

The scheduling relationship is shown in table 3:

TABLE 3

As can be seen from table 3, the downlink subframe 0 may schedule the uplink subframe 4 or 7, or schedule the uplink subframes 4 and 7 at the same time, and the downlink subframe 1 may schedule the uplink subframe 7 or 8, or schedule the uplink subframes 7 and 8 at the same time, and so on, which are not described in detail.

Wherein, the value of k is specified in the 3GPP protocol, as shown in table 4:

TABLE 4

The TDD UL/DL Configuration column indicates a Configuration number of uplink and downlink subframe Configuration, the DLsubframe number n column indicates a subframe sequence number n, and the number below the subframe sequence number indicates a value of k when the subframe sequence number is n corresponding to the current uplink and downlink subframe Configuration. For example, for the uplink and downlink subframe configuration 0, when the downlink subframe is subframe 0, k is 4, when the downlink subframe is subframe 1, k is 6, and so on.

As shown in fig. 3, which is a schematic diagram of a subframe scheduling timing sequence, a downlink subframe 0 in a radio frame SFNn in the diagram performs only single-frame scheduling, that is, an uplink subframe 4 is scheduled; performing multi-frame scheduling on the downlink subframe 1, namely scheduling uplink subframes 7 and 8 in the wireless frame at the same time; the downlink subframe 5 only carries out single-frame scheduling, namely scheduling an uplink subframe 9; the downlink subframe 6 performs multi-frame scheduling, that is, uplink subframes 2 and 3 in the next radio frame SFNn +1 are scheduled simultaneously.

For the subframe scheduling timing sequence shown in fig. 3, currently, the base station will issue two PDCCHs to the same UE successively at the same downlink subframe scheduling time, and respectively carry resources allocated to two different uplink subframes, so as to complete scheduling of the two uplink subframes. However, this method wastes PDCCH resources to a certain extent, and therefore, more users cannot be scheduled due to the limited PDCCH resources, resulting in limited cell capacity.

In view of the above situation, an embodiment of the present application provides a method for scheduling an uplink subframe, where the uplink subframe includes a first uplink subframe and a second uplink subframe, and as shown in fig. 4, the method includes:

step S401, judging whether the data to be transmitted is initial transmission data or retransmission data;

in the embodiment of the application, different scheduling methods are adopted for different initial transmission data, a method for passively performing multi-frame scheduling is adopted for the initial transmission data, and a method for actively performing multi-frame scheduling is adopted for retransmission data.

Therefore, it is first determined whether the data to be transmitted is the initial transmission data or the retransmission data.

It should be noted that the multi-frame scheduling described in the embodiment of the present application refers to scheduling two uplink subframes simultaneously by only sending one PDCCH on one downlink subframe, and the single-frame scheduling refers to scheduling one uplink subframe by sending one PDCCH on one downlink subframe.

Step S402, if the data is initially transmitted, entering an initial transmission process, and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling;

step S403, if the condition for executing single frame scheduling is met, scheduling the first uplink subframe or the second uplink subframe to preferentially execute single frame scheduling;

step S404, if the condition of executing single frame scheduling is not satisfied, scheduling a first uplink subframe and a second uplink subframe to execute multi-frame scheduling;

and entering an initial transmission process when the data to be transmitted is judged to be initial transmission data, and adopting a passive multi-frame scheduling method for the initial transmission data. Therefore, in the above steps S402-S404, it is first determined whether the first uplink subframe or the second uplink subframe meets the condition for performing single frame scheduling, if yes, the first uplink subframe or the second uplink subframe is scheduled to preferentially perform single frame scheduling, and when the condition for performing single frame scheduling is not met, the first uplink subframe and the second uplink subframe are selected to be scheduled to perform multi-frame scheduling.

Step S405, if the data is retransmitted, entering a retransmission process, and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling;

step S406, if the condition of executing multi-frame scheduling is met, scheduling the first uplink subframe and the second uplink subframe to preferentially execute multi-frame scheduling;

step S407, if the condition for executing multi-frame scheduling is not satisfied, the first uplink subframe or the second uplink subframe is scheduled to execute single-frame scheduling.

And entering a retransmission process when the data to be transmitted is judged to be retransmission data, and actively executing a multi-frame scheduling method for the retransmission data. Therefore, in the above steps S405-S407, it is first determined whether the first uplink subframe or the second uplink subframe meets the condition for performing multi-frame scheduling, if yes, the first uplink subframe and the second uplink subframe are scheduled to preferentially perform multi-frame scheduling, and when the condition for performing multi-frame scheduling is not met, the first uplink subframe or the second uplink subframe is selected to be scheduled to perform single-frame scheduling.

According to the embodiment of the application, aiming at the condition that one downlink subframe simultaneously schedules two uplink subframes, different scheduling modes are selected to schedule the uplink subframes according to different data to be transmitted. Because the multi-frame scheduling process is relatively complex, the embodiment of the application can obviously reduce the processing complexity of the base station equipment by passively using the multi-frame scheduling for the initially transmitted data, particularly under the scene of more small data traffic, and can also adaptively select the better bearing capacity between the single-frame scheduling and the multi-frame scheduling, thereby optimizing the system performance; and for retransmission data, multi-frame scheduling is actively used, so that the data transmission efficiency is improved, the service delay is reduced, and the user perception is improved.

According to the embodiment of the application, through a dynamic selection scheduling mode, when multi-frame scheduling is adopted, resources allocated to two different uplink subframes can be borne by issuing one PDCCH, so that PDCCH resources can be saved, more users can be scheduled, and the cell capacity is increased.

Next, a specific method for scheduling an uplink subframe will be described.

In this embodiment, the first uplink subframe and/or the second uplink subframe are/is scheduled by a downlink subframe n, where n is a sequence number of the downlink subframe. The first uplink subframe is n + k, and the second uplink subframe is n + 7; and k is the time delay between the downlink subframe n and the first uplink subframe n + k, and the time delay takes a subframe as a unit.

Of course, the first uplink subframe in this embodiment may also be n +7, and the second uplink subframe is n + k; k is a time delay between the downlink subframe n and the second uplink subframe n + k, where the time delay is in units of subframes, and a person skilled in the art may perform corresponding processing according to an actual situation, which is not limited in this embodiment of the present application.

Referring to fig. 5, a flowchart of a method for scheduling an uplink subframe according to the second embodiment of the present application is shown, where the method includes:

step S501, carrying out priority sequencing on each user equipment;

firstly, the user equipment to be scheduled (user equipment which has initial transmission data or retransmission data to be transmitted in an uplink buffer recorded at the base station side) is subjected to priority sequencing according to a certain rule.

When performing priority ranking, the Guaranteed Bit Rate (GBR) attribute of the service, whether data to be transmitted and Page Files (PF), RR, MaxC/I, etc. are to be ranked may be considered comprehensively, and a specific ranking process may be performed by a person skilled in the art according to actual conditions, which is not discussed in detail herein.

Step S502, the user equipment with the highest priority is taken out, and whether the data to be transmitted, which needs to be sent to the user equipment by the base station, is initial transmission data or retransmission data is judged;

step S503, if the data is primarily transmitted, entering a primary transmission process;

in step S504, if the data is retransmitted, the retransmission process is performed.

As shown in fig. 6, which is a primary flow chart in the second embodiment of the present invention, the primary flow specifically includes the following steps:

step a1, obtaining the total amount D of the initial transmission data_init；

Step a2, allocating resources for the uplink sub-frame n + k, recording the allocated resources as R (n + k), obtaining the data volume D (n + k) carried by R (n + k), and recording the remaining initial transmission data volume as D_wait(n+k)＝D_init-D(n+k)；

The resource allocated to the Uplink subframe is a Physical Uplink Shared Channel (PUSCH), and the PUSCH is used for carrying the initial transmission data.

Step a3, judging the residual initial transmission data volume as D_waitWhether (n + k) is 0;

if yes, indicating that the uplink subframe n + k meets the condition of executing single-frame scheduling, executing the single-frame scheduling of the step a22, and scheduling the uplink subframe n + k according to the resource R (n + k); if not, step a4 is executed.

Step a4, allocating resources for the uplink sub-frame n +7, recording the allocated resources as R (n +7), obtaining the data volume D (n +7) carried by R (n +7), and recording the remaining initial transmission data volume as D_wait(n+7)＝D_init-D(n+7)；

Step a5, judging the residual initial transmission data volume as D_waitWhether (n +7) is 0;

if yes, indicating that the uplink subframe n +7 meets the condition of executing single frame scheduling, executing the single frame scheduling of the step a22, and scheduling the uplink subframe n +7 according to the resource R (n + 7); if not, step a6 is executed.

The steps a 1-a 5 are mainly processes for determining whether all the initial transmission data can be carried when single frame scheduling is performed. If D is_wait(n + k) is 0, it indicates that all the initial transmission data can be carried only by scheduling the uplink subframe n + k, that is, the uplink subframe n + k meets the condition of executing single frame scheduling; if D is_waitAnd (n +7) is 0, it indicates that all the initial transmission data can be carried by only scheduling the uplink subframe n +7, that is, the uplink subframe n +7 meets the condition of executing single frame scheduling.

In this embodiment, if all the initially transmitted data can be carried by performing single frame scheduling, single frame scheduling is preferably used.

Step a6, decision D_waitWhether (n + k)/D (n + k) is smaller than a preset threshold value;

if it is (i.e. D)_wait(n + k)/D (n + k) is less than the preset threshold value), then step a7 is executed; if not (i.e. D)_wait(n + k)/D (n + k) is greater than or equal to a preset threshold value), step a14 is performed.

Step a7, recording the maximum value D of the bearable initial transmission data_trans1＝D(n+k)；

Step a8, decision D_waitWhether (n +7)/D (n +7) is smaller than a preset threshold value or not;

if it is (i.e. D)_wait(n +7)/D (n +7) is smaller than the preset threshold value), the step a9 is executed; if not (i.e. D)_wait(n +7)/D (n +7) is greater than or equal to the preset threshold value), step a11 is executed.

Step a9, recording the maximum value D of the bearable initial transmission data_trans2＝D(n+7)；

Step a10, decision D_trans1Whether or not it is greater than D_trans2；

If D is_trans1Greater than D_trans2If so, indicating that the uplink subframe n + k meets the condition for executing single-frame scheduling, executing the single-frame scheduling of the step a22, and scheduling the uplink subframe n + k according to the resource R (n + k); if D is_trans1Is less than D_trans2If so, it indicates that the uplink subframe n +7 meets the condition for executing single frame scheduling, the single frame scheduling of step a22 is executed, and the uplink subframe n +7 is scheduled according to the resource R (n + 7); if D is_trans1Is equal to D_trans2If yes, it indicates that the uplink subframe n + k or the uplink subframe n +7 meets the condition for performing single frame scheduling, and performs the single frame scheduling of step a22, and schedules the uplink subframe n + k according to the resource R (n + k) or schedules the uplink subframe n +7 according to the resource R (n + 7).

The above-mentioned step a 6-step a10 are mainly processes of determining whether the resource required for performing multi-frame scheduling is larger than the resource required for performing single-frame scheduling after all the initial transmission data cannot be carried when it is determined in the steps 1-5 that single-frame scheduling is performed according to the resource R (n + k) or the resource R (n + 7).

Specifically, the initial transmission data volume D remained after single frame scheduling is executed_waitAnd judging which scheduling needs more resources according to the ratio of the bearable initial transmission data volume D during single frame scheduling. If the ratio is smaller than the preset threshold value, the resource required by executing the multi-frame scheduling is larger than the resource required by executing the single-frame scheduling.

Preferably, the preset threshold is 0.9, although the threshold may be other values, which is not limited in this application.

In the embodiment of the present application, if it is determined that the resources required for performing multi-frame scheduling are both greater than the resources required for performing single-frame scheduling according to the resource R (n + k) and the resource R (n +7), single-frame scheduling is preferably used.

A11, judging whether a resource completely consistent with the resource R (n +7) of the uplink subframe n +7 exists in the idle resource of the uplink subframe n + k;

if yes, go to step a 12; if not, step a9 is executed.

When D is judged in the step a8_waitWhen (n +7)/D (n +7) is greater than or equal to the preset threshold, it indicates that the resource required for performing multi-frame scheduling is smaller than the resource required for performing single-frame scheduling according to the resource R (n +7), and therefore, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to the resource R (n +7) to perform multi-frame scheduling.

However, if multi-frame scheduling is to be performed according to resource R (n +7), the condition in step a11 needs to be further satisfied. When multi-frame scheduling is performed, different resources cannot be allocated to two scheduled subframes by the relevant fields in the DCI format0, so that it is necessary to ensure that the resources of the two scheduled uplink subframes are completely consistent.

Therefore, in step a11, if it is determined that there is a resource completely consistent with the resource R (n +7) of the uplink subframe n +7 in the idle resources of the uplink subframe n + k, it is possible to simultaneously schedule the uplink subframes n + k and n +7 according to the resource R (n +7) to perform multi-frame scheduling; and if the idle resources of the uplink subframe n + k are judged to have no resources completely consistent with the resources R (n +7) of the uplink subframe n +7, returning to the step a9 again to execute single-frame scheduling.

Step a12, recording the maximum value D of the bearable initial transmission data_trans2＝min(2*D(n+7)，D_init)；

Since it is determined in step a11 that there is a resource completely identical to resource R (n +7) of uplink subframe n +7 in the idle resources of uplink subframe n + k, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to resource R (n +7) to perform multi-frame scheduling.

At this time, the maximum value of the initial transmission data that can be carried by the resource R (n +7) should be D_trans2＝min(2*D(n+7)，D_init)。

Step a13, decision D_trans1Whether or not it is greater than D_trans2；

If D is_trans1Greater than or equal to D_trans2If so, indicating that the uplink subframe n + k meets the condition for executing single-frame scheduling, executing the single-frame scheduling of the step a22, and scheduling the uplink subframe n + k according to the resource R (n + k); if D is_trans1Is less than D_trans2Then, the multi-frame scheduling of step a23 is performed, and uplink subframes n + k and n +7 are scheduled simultaneously according to resource R (n + 7).

Because the embodiment of the application preferentially executes single-frame scheduling on the initial transmission data, when D is higher than D_trans1Is equal to D_trans2And then, selecting single frame scheduling, and scheduling the uplink subframe n + k according to the resource R (n + k).

After it is determined in step a11 that there is a resource completely consistent with resource R (n +7) of uplink subframe n + k in the idle resource of uplink subframe n + k, it is further determined whether the data size bearable by performing single frame scheduling is larger than the data size bearable by performing multi-frame scheduling, and when the data size bearable by performing single frame scheduling is larger than or equal to the data size bearable by performing multi-frame scheduling, single frame scheduling is preferentially selected.

A14, judging whether a resource completely consistent with a resource R (n + k) of an uplink subframe n + k exists in the idle resource of the uplink subframe n + 7;

if yes, go to step a 15; if not, step a7 is executed.

When D is judged in the step a6_waitWhen (n + k)/D (n + k) is greater than or equal to the preset threshold, it indicates that the resource required for performing multi-frame scheduling is smaller than the resource required for performing single-frame scheduling according to the resource R (n + k), and therefore, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to the resource R (n + k) to perform multi-frame scheduling.

However, as can be seen from the above description of step a11, if multi-frame scheduling is to be performed according to resource R (n + k), the condition in step a14 needs to be further satisfied. In step a14, if it is determined that there is a resource completely consistent with resource R (n + k) of uplink subframe n + k in the idle resource of uplink subframe n +7, it is possible to simultaneously schedule uplink subframes n + k and n +7 according to resource R (n + k) to perform multi-frame scheduling; and if the idle resources of the uplink subframe n +7 do not have the resources completely consistent with the resources R (n +7) of the uplink subframe n + k, returning to the step a7 again to determine whether single-frame scheduling or multi-frame scheduling needs to be performed.

Step a15, recording the maximum value D of the bearable initial transmission data_trans1＝min(2*D(n+k)，D_init)；

Since it is determined in step a14 that there is a resource completely identical to the resource R (n + k) of the uplink subframe n + k in the idle resources of the uplink subframe n +7, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to the resource R (n + k) to perform multi-frame scheduling.

At this time, the maximum value of the initial transmission data that can be carried by the resource R (n + k) should be D_trans1＝min(2*D(n+k)，D_init)。

Step a16, decision D_waitWhether (n +7)/D (n +7) is smaller than a preset threshold value or not;

if it is (i.e. D)_wait(n +7)/D (n +7) is smaller than the preset threshold value), the step a17 is executed; if not (i.e. D)_wait(n +7)/D (n +7) is greater than or equal to the preset threshold value), step a19 is executed.

When it is determined that there is a resource completely identical to the resource R (n + k) of the uplink subframe n + k in the idle resource of the uplink subframe n +7, it is further necessary to determine D for the uplink subframe n +7_waitWhether (n +7)/D (n +7) is smaller than a preset threshold value or not so as to detect whether the resource required by executing multi-frame scheduling is larger than the resource required by executing single-frame scheduling according to the resource R (n + 7).

Step a17, recording the maximum value D of the bearable initial transmission data_trans2＝D(n+7)；

If D is judged in the step a16_waitIf (n +7)/D (n +7) is smaller than the preset threshold, it indicates whether the resource required for performing multi-frame scheduling is larger than the resource required for performing single-frame scheduling according to the resource R (n +7), and therefore it is further determined whether single-frame scheduling or multi-frame scheduling needs to be performed.

At this time, the maximum value D of the initial transmission data which can be carried by the resource R (n +7) is recorded_trans2＝D(n+7)。

Step a18, decision D_trans1Whether or not it is greater than D_trans2；

If D is_trans1Less than or equal to D_trans2If so, it indicates that the uplink subframe n +7 meets the condition for executing single frame scheduling, the single frame scheduling of step a22 is executed, and the uplink subframe n +7 is scheduled according to the resource R (n + 7); if D is_trans1Greater than D_trans2Then, the multi-frame scheduling of step a23 is performed, and uplink subframes n + k and n +7 are scheduled simultaneously according to resource R (n + k).

Similar to step a13, since the single-frame scheduling is preferably used for the initial transmission data in the embodiment of the present application, when it is determined in this step that the amount of data that can be carried by performing single-frame scheduling according to resource R (n +7) is greater than or equal to the amount of data that can be carried by performing multi-frame scheduling according to resource R (n + k), single-frame scheduling is performed.

A19, judging whether a resource completely consistent with the resource R (n +7) of the uplink subframe n +7 exists in the idle resource of the uplink subframe n + k;

if yes, go to step a 20; if not, step a17 is executed.

When D is judged in the step a16_waitWhen (n +7)/D (n +7) is greater than or equal to the preset threshold, it indicates that the resource required for performing multi-frame scheduling is smaller than the resource required for performing single-frame scheduling according to the resource R (n +7), and therefore, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to the resource R (n +7) to perform multi-frame scheduling.

However, if multi-frame scheduling is to be performed according to resource R (n +7), the condition in step a16 needs to be further satisfied. In step a16, if it is determined that there is a resource completely consistent with resource R (n +7) of uplink subframe n +7 in the idle resources of uplink subframe n + k, it is possible to simultaneously schedule uplink subframe n + k and n +7 according to resource R (n +7) to perform multi-frame scheduling; and if the idle resources of the uplink subframe n + k are judged to have no resources completely consistent with the resources R (n +7) of the uplink subframe n +7, returning to the step a17 again to judge whether single-frame scheduling or multi-frame scheduling needs to be executed.

Step a20, recording the maximum value D of the bearable initial transmission data_trans2＝min(2*D(n+7)，D_init)；

Since it is determined in step a19 that there is a resource completely identical to resource R (n +7) of uplink subframe n +7 in the idle resources of uplink subframe n + k, it may be considered that uplink subframes n + k and n +7 are scheduled simultaneously according to resource R (n +7) to perform multi-frame scheduling.

Step a21, decision D_trans1Whether or not it is greater than D_trans2；

If D is_trans1Greater than D_trans2Then, according to resource R (n + k), scheduling uplink subframes n + k and n +7 at the same time, and executing the multi-frame scheduling of step a 23; if D is_trans1Is less than D_trans2Scheduling uplink subframes n + k and n +7 according to the resource R (n +7), and executing the multi-frame scheduling of the step a 23; if D is_trans1Is equal to D_trans2Then uplink subframes n + k and n +7 are scheduled according to resource R (n + k) or R (n +7), and the multi-frame scheduling of step a23 is performed.

When it is determined that multi-frame scheduling can be performed according to both the resource R (n + k) and the resource R (n +7), it is further determined which resource has a larger initial transmission data volume, and then multi-frame scheduling is performed by using the resource having the larger initial transmission data volume.

Step a22, executing single frame scheduling;

specifically, the method comprises the following steps:

when the uplink subframe n + k meets the condition of executing single-frame scheduling, scheduling the uplink subframe n + k according to the allocated resource R (n + k);

and when the uplink subframe n +7 meets the condition of executing single-frame scheduling, scheduling the uplink subframe n +7 according to the allocated resource R (n + 7).

Step a23, performing multi-frame scheduling.

Specifically, the method comprises the following steps:

comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Greater than D_trans2Then, scheduling an uplink subframe n + k and an uplink subframe n +7 according to the allocated resource R (n + k);

when D is present_trans1Is less than D_trans2Then, scheduling an uplink subframe n + k and an uplink subframe n +7 according to the allocated resource R (n + 7);

when D is present_trans1Is equal to D_trans2And scheduling the uplink subframe n + k and the uplink subframe n +7 according to the allocated resource R (n + k) or R (n + 7).

The embodiment of the application adopts a method for passively using multi-frame scheduling aiming at initially transmitted data, namely if single-frame scheduling is executed to bear all data to be transmitted, or single-frame scheduling is executed to not bear all data to be transmitted, but large resource waste exists in multi-frame scheduling, or resources which are completely consistent with allocated resources of one uplink subframe do not exist in idle resources of one uplink subframe when multi-frame scheduling is executed, or the data quantity which can be borne by single-frame scheduling is executed to be more than that of multi-frame scheduling, the multi-frame scheduling is not used. The passive use of multi-frame scheduling has the advantages that on one hand, the processing complexity of the base station can be reduced to a certain extent, and on the other hand, a better data bearing capacity is selected in single-frame scheduling and multi-frame scheduling all the time, so that the system performance can be optimized.

As shown in fig. 7, which is a retransmission flowchart according to the second embodiment, the retransmission flowchart specifically includes the following steps:

step b1, judging whether the uplink subframe n + k and the uplink subframe n +7 both comprise retransmission data;

if yes, go to step b 2; if not, the single-frame scheduling of the step b16 is executed by scheduling the uplink sub-frame including the retransmission data.

Since the two scheduled uplink subframes share the same data indication signaling NDI when performing multi-frame scheduling, in this embodiment, multi-frame scheduling is considered to be performed only when both uplink subframe n + k and uplink subframe n +7 include retransmission data. If both uplink subframes include retransmission data, the following process is further performed to determine whether to perform single-frame scheduling or multi-frame scheduling.

B2, allocating resources in the uplink sub-frame n + k, and setting the resource allocation identifier as false;

firstly, allocating resources for an uplink subframe n + k, wherein the allocated resources are PUSCH (physical uplink shared channel) which is used for bearing the retransmission data.

In this embodiment, a resource allocation flag is also set, and the value of the resource allocation flag is false or true. When the uplink subframe n + k and the uplink subframe n +7 do not satisfy the condition for executing multi-frame scheduling, how to perform processing is determined according to the value of AllocFlag, and the specific process will be described in detail in the following steps.

Step b3, judging whether the resource allocation of the uplink subframe n + k is successful;

if yes, go to step b4, otherwise go to step b 7.

If the resource allocation for the uplink subframe n + k is successful, it indicates that the scheduling process of the uplink subframe can be executed according to the resource allocated for the uplink subframe n + k, otherwise, it indicates that the scheduling process of the uplink subframe cannot be executed according to the resource allocated for the uplink subframe n + k.

However, after the resource allocation is successful, the following procedure is further performed to determine whether single-frame scheduling or multi-frame scheduling is specifically performed.

Step b4, recording the resource allocated for the uplink subframe n + k as R (n + k), and setting the resource allocation identifier as true;

step b5, judging whether the idle resources of the uplink sub-frame n +7 have the resources completely consistent with the resources R (n + k) of the uplink sub-frame n + k;

if yes, go to step b6, otherwise go to step b 7.

After determining that the resource allocation of the uplink subframe n + k is successful in step b3, it indicates that the scheduling process may be performed according to the resource (n + k), but whether multi-frame scheduling may be performed according to the resource (n + k) or not, and the condition in step b5 needs to be further satisfied.

When multi-frame scheduling is performed, different resources cannot be allocated to two scheduled subframes by the relevant fields in the DCI format0, so that it is necessary to ensure that the resources of the two scheduled uplink subframes are completely consistent.

Therefore, in step b5, if it is determined that there is a resource completely consistent with the resource R (n + k) of the uplink subframe n + k in the idle resources of the uplink subframe n +7, it is possible to simultaneously schedule the uplink subframes n + k and n +7 according to the resource R (n + k) to perform multi-frame scheduling.

Step b6, judging whether the resource R (n + k) of the uplink subframe n + k can bear the retransmission data of the uplink subframe n + 7;

if yes, determining that the condition of executing multi-frame scheduling is met, executing the multi-frame scheduling process of the step b15, and scheduling an uplink subframe n + k and an uplink subframe n +7 according to the resource R (n + k); if not, step b7 is executed.

If both the conditions in step b3 and step b5 are satisfied, the determination process of step b6 needs to be executed, where the determination is mainly to determine whether the retransmission data of the uplink subframe n +7 can be carried if multi-frame scheduling is executed according to the resource R (n + k) of the uplink subframe n + k, and when carrying is possible, multi-frame scheduling can be executed according to the resource R (n + k) to simultaneously schedule the uplink subframe n + k and the uplink subframe n + 7.

For example, a resource R (n + k) allocated to an uplink subframe n + k is 4PRB (physical Radio Bearer), the amount of data that can be carried by the resource is 800 bits, the retransmission data of the uplink subframe n + k is 800 bits, the retransmission data of the uplink subframe n +7 is 1000 bits, and since R (n + k) is 4PRB and can only carry 800 bits of data, it cannot carry the retransmission data of the uplink subframe n + 7.

B7, allocating resource in the uplink sub-frame n + 7;

if the resource allocation for the uplink subframe n + k is unsuccessful, or there is no resource completely consistent with the resource of the uplink subframe n + k in the idle resource of the uplink subframe n +7, or the resource of the uplink subframe n + k cannot carry the retransmission data of the uplink subframe n +7, it indicates that the multi-frame scheduling cannot be performed according to the resource R (n + k) of the uplink subframe n + k. Therefore, it is determined whether multi-frame scheduling can be performed according to the resource of the uplink subframe n + 7.

Step b8, judging whether the resource allocation of the uplink subframe n +7 is successful;

if yes, go to step b9, otherwise go to step b 12.

If the resource allocation for the uplink subframe n +7 is successful, it indicates that the scheduling process of the uplink subframe can be executed according to the resource allocated for the uplink subframe n +7, otherwise, it indicates that the scheduling process of the uplink subframe cannot be executed according to the resource allocated for the uplink subframe n + 7.

Step b9, recording the resource allocated for the uplink subframe n +7 as R (n + k);

step b10, judging whether the idle resources of the uplink sub-frame n + k have the resources completely consistent with the resources R (n +7) of the uplink sub-frame n + 7;

if yes, go to step b11, otherwise go to step b 13.

After determining that the resource allocation of the uplink subframe n +7 is successful in step b8, it indicates that the scheduling process may be performed according to the resource (n +7), but whether multi-frame scheduling may be performed according to the resource (n +7) or not, and the condition in step b10 needs to be further satisfied.

In step b10, if it is determined that there is a resource completely consistent with resource R (n +7) of uplink subframe n +7 in the idle resource of uplink subframe n + k, it is possible to simultaneously schedule uplink subframe n + k and uplink subframe n +7 according to resource R (n +7) to perform multi-frame scheduling.

Step b11, judging whether the resource R (n +7) of the uplink subframe n +7 can bear the retransmission data of the uplink subframe n + k;

if yes, determining that the condition of executing multi-frame scheduling is met, executing the multi-frame scheduling process of the step b15, and scheduling an uplink subframe n + k and an uplink subframe n +7 according to the resource R (n + 7); if not, step b13 is executed.

If both the conditions in step b8 and step b10 are satisfied, the determination process of step b11 needs to be executed, where the determination is mainly to determine whether the retransmission data of the uplink subframe n + k can be carried if multi-frame scheduling is executed according to the resource R (n +7) of the uplink subframe, and when carrying is possible, multi-frame scheduling can be executed according to the resource R (n +7) while scheduling the uplink subframe n + k.

b12, judging whether the resource allocation identifier AllocFlag is true;

and when the resource allocation aiming at the uplink subframe n +7 is unsuccessful, judging whether the resource allocation identifier AllocFlag is true. If yes, indicating that the resource allocation of the uplink subframe n + k is successful, executing the single-frame scheduling process of the step b16, and scheduling the uplink subframe n + k according to the resource R (n + k) of the uplink subframe; if not, it indicates that the resource allocation of the uplink subframe n + k and the uplink subframe n +7 both fail, and therefore, the resource cannot be allocated to the ue, and the scheduling process of the uplink subframe cannot be executed.

Step b13, judging whether the resource allocation flag is true;

if so, execute step b14, otherwise, execute the single frame scheduling of step b16, and schedule the uplink subframe n +7 according to the resource R (n +7) of the uplink subframe n + 7.

After the resources of the uplink subframe n +7 are successfully allocated, if no resource completely consistent with the resource R (n +7) of the uplink subframe n +7 exists in the idle resources of the uplink subframe n + k, or the resource of the uplink subframe n + k cannot bear the retransmission data of the uplink subframe n +7, it indicates that multi-frame scheduling cannot be performed according to the resource R (n +7) of the uplink subframe n + 7; and the above also judges that multi-frame scheduling cannot be performed according to the resource R (n + k) of the uplink subframe n + k (because it is judged whether multi-frame scheduling can be performed according to the resource R (n +7) of the uplink subframe n +7 only when multi-frame scheduling cannot be performed according to the resource R (n + k) of the uplink subframe n + k), therefore, only single-frame scheduling can be performed.

Specifically, single frame scheduling is performed for the resource of the uplink subframe, and it is further determined whether the resource allocation flag is true.

When AllocFlag is true, it indicates that the resource allocation for the uplink subframe n + k is successful, and at the same time, it is also determined in step b8 that the resource allocation for the uplink subframe n +7 is successful, so that step b14 is further performed to determine to perform the single frame scheduling process according to the resource of that uplink subframe; when AllocFlag is a flag, it indicates that the resource allocation for the uplink subframe n + k is unsuccessful, and therefore the uplink subframe n +7 needs to be scheduled according to the resource R (n +7) of the uplink subframe n + 7.

Step b14, judging whether the retransmission times of the retransmission data of the uplink subframe n + k is larger than or equal to the retransmission times of the retransmission data of the uplink subframe n + 7;

if the number of times of retransmission of the uplink subframe n + k is greater than or equal to the number of times of retransmission of the uplink subframe n +7, the uplink subframe n + k needs to be scheduled preferentially, so that the single-frame scheduling process of step b16 is executed, and the uplink subframe n + k is scheduled according to the resource R (n + k) of the uplink subframe n + k; if the number of times that the retransmission data of the uplink subframe n + k has been retransmitted is less than the number of times that the retransmission data of the uplink subframe n +7 has been retransmitted, the uplink subframe n +7 needs to be scheduled preferentially, so that the single-frame scheduling process of step b16 is executed, and the uplink subframe n +7 is scheduled according to the resource R (n +7) of the uplink subframe n + 7.

The embodiment of the application adopts a method for actively using multi-frame scheduling aiming at retransmission data, when an uplink subframe n + k and an uplink subframe n +7 both comprise retransmission data and any one of the uplink subframes meets the condition that when resources are allocated to the any one uplink subframe, the resources are successfully allocated, and when resources which are completely consistent with the resources of the any one uplink subframe exist in idle resources of the other uplink subframe and the resources of the any one uplink subframe can bear the retransmission data of the other uplink subframe, the multi-frame scheduling is preferentially adopted. The method of actively using multi-frame scheduling for retransmission data improves the efficiency of data transmission, reduces service delay and improves user perception.

The second embodiment is to introduce the method for scheduling uplink subframes according to the present application by using a specific example, where the two scheduled uplink subframes are n + k and n +7, but the process of scheduling the two scheduled uplink subframes is not limited by the sequence of steps in the second embodiment. In the following, by combining the descriptions of the specific processes in the second embodiment, the method for scheduling an uplink subframe proposed in the present application is generally described in the third embodiment.

Referring to fig. 8, a flowchart of a method for scheduling an uplink subframe according to a third embodiment of the present application is shown, where the uplink subframe includes a first uplink subframe and a second uplink subframe.

The method comprises the following steps:

step S801, carrying out priority ordering on each user equipment, and executing the process of scheduling uplink subframes on the user equipment with the highest priority;

step S802, judging whether the data to be transmitted is initial transmission data or retransmission data;

step S803, if the data is initially transmitted, entering an initial transmission process, and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single frame scheduling;

the step S803 specifically includes:

substep 1, obtaining the total amount D of the initial transmission data_init；

Substep 2, allocating resources for the first uplink subframe or the second uplink subframe, and recording the allocated resources as R1 or R2;

substep 3, obtaining the initial transmission data volume D1 carried by the allocated resource R1 or the initial transmission data volume D2 carried by the allocated resource R2;

substep 4, calculating said D_initDifference D from D1_wait1 or D_initDifference D from D2_wait2, judging whether the difference value is 0;

substep 5, when the difference D is reached_waitWhen 1 is 0, determining that the first uplink subframe meets the condition of executing single frame scheduling; when the difference D_wait2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling;

the process of substep 1 to substep 5 is substantially similar to the process of substep a1 to substep a5 in example two, and specific reference is made to the related description of example two, and this embodiment will not be discussed in detail here.

Substep 6, when D_wait1 and D_waitWhen 2 is not 0, D is judged_waitWhether the 1/D1 is smaller than a preset threshold value;

substep 7, if D is judged in substep 6_waitIf 1/D1 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans1＝D1；

Substep 8, judgment D_waitWhether 2/D2 is smaller than a preset threshold value;

substep 9, if D is judged in substep 8_waitIf 2/D2 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans2＝D2；

Substep 10 of comparing said D_trans1And D_trans2The size of (d);

substep 11, when D_trans1Greater than D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is equal to D_trans2Determining that the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling;

the substep 6 to the substep 11 are substantially similar to the substep a6 to the substep a10 of the second embodiment, and the specific process can be referred to the related descriptions of the second embodiment.

Substep 12, if substep 8 determines D_waitIf the 2/D2 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe;

substep 13, if it is determined in substep 12 that there is no resource completely consistent with resource R2 of the second uplink subframe in the free resources of the first uplink subframe, executing substep 9 to record the maximum value D of the initial transmission data that can be carried_trans2＝D2；

Substep 14, if it is determined in substep 12 that there is a resource completely consistent with resource R2 of the second uplink subframe in the idle resources of the first uplink subframe, recording a maximum value D of the initial transmission data that can be carried_trans2＝min(2*D2，D_init)；

Substep 15 of comparing said D_trans1And D_trans2The size of (d); when D is present_trans1Greater than or equal to D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling;

the substeps 12 to 15 are substantially similar to the substeps a11 to a13 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Substep 16, if D is judged in substep 6_waitIf the 1/D1 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in idle resources of a second uplink subframe;

substep 17, if it is determined in substep 16 that there is no resource R1 in the second uplink subframe completely different from the resource R1 in the first uplink subframeIf the resources are consistent, the maximum value D of the bearable initial transmission data is recorded in the substep 7_trans1＝D1；

Substep 18, if it is determined in substep 16 that there is a resource completely consistent with resource R1 of the first uplink subframe in the idle resources of the second uplink subframe, recording a maximum value D of the initial transmission data that can be carried_trans1＝min(2*D1，D_init)；

The substeps 16 to 18 are substantially similar to the substeps a14 to a15 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Substep 19, judgment D_waitWhether 2/D2 is smaller than a preset threshold value;

substep 20, if substep 19 determines D_waitIf the 2/D2 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe;

substep 21, if D is judged in substep 19_wait2/D2 is less than the preset threshold value, or if it is determined in substep 20 that there is no resource completely consistent with resource R2 of the second uplink subframe in the idle resource of the first uplink subframe, the maximum value D of the initial transmission data which can be carried is recorded_trans2＝D2；

Substep 22 of comparing said D_trans1And D_trans2The size of (d);

substep 23, when D_trans1Greater than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling; when D is present_trans1Less than or equal to D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling;

the substeps 19 to 23 are substantially similar to the substeps a16 to a19 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Substep 24, if it is determined in substep 20 that there is a resource completely consistent with resource R2 of the second uplink subframe in the idle resources of the first uplink subframe, recording a maximum value D of the initial transmission data that can be carried_trans2＝min(2*D2，D_init)；

At this time, it is determined that neither the first uplink subframe nor the second uplink subframe satisfies the condition for performing single frame scheduling, and multi-frame scheduling needs to be performed.

The sub-step 24 is substantially similar to the step a20 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Step S804, if the condition of executing single frame scheduling is met, scheduling the first uplink subframe or the second uplink subframe to preferentially execute single frame scheduling;

step S804 corresponds to step a22 of the second embodiment, and specifically includes:

when the first uplink subframe meets the condition for executing single-frame scheduling, scheduling the first uplink subframe according to the allocated resource R1;

and when the second uplink subframe meets the condition for executing the single-frame scheduling, scheduling the second uplink subframe according to the allocated resource R2.

Step S805, if the condition for executing single-frame scheduling is not satisfied, scheduling a first uplink subframe and a second uplink subframe to execute multi-frame scheduling;

this step S805 corresponds to step a23 of the second embodiment, and specifically includes:

comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Greater than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R1;

when D is present_trans1Is less than D_trans2According to allocated resourcesR2 schedules a first uplink subframe and a second uplink subframe;

when D is present_trans1Is equal to D_trans2The first uplink subframe and the second uplink subframe are scheduled according to the allocated resource R1 or R2.

The specific process of step S805 may refer to the related descriptions of step a13 and step a21 in the second embodiment, and this embodiment will not be discussed in detail here.

Step 806, if the data is retransmitted, entering a retransmission process, and determining whether the first uplink subframe and the second uplink subframe meet a condition for executing multi-frame scheduling;

wherein the condition for executing the multi-frame scheduling is as follows:

the first uplink subframe and the second uplink subframe comprise retransmission data, and any one uplink subframe meets a fourth condition; the fourth condition is: when the resource is allocated to any uplink subframe, the resource allocation is successful; and resources completely consistent with the resources of any uplink subframe exist in the idle resources of the other uplink subframe; and the resource of any uplink subframe can bear the retransmission data of another uplink subframe.

The step S806 specifically includes:

a substep A, judging whether the first uplink subframe and the second uplink subframe both comprise retransmission data;

step B, when the first uplink subframe and the second uplink subframe comprise retransmission data, allocating resources in the first uplink subframe, and setting a resource allocation identifier as false;

and when only the first uplink subframe or the second uplink subframe comprises retransmission data, scheduling the uplink subframe according to the resource of the uplink subframe comprising the retransmission data.

Step C, if the resource allocation for the first uplink subframe is successful, recording the allocated resource as R1, and setting a resource allocation identifier as true;

a substep D, judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in the idle resources of the second uplink subframe;

step E, if the determination result of step D is yes, determining whether resource R1 of the first uplink subframe can carry retransmission data of the second uplink subframe;

and a substep F, if the judgment result of the substep E is yes, determining that the condition for executing the multiframe scheduling is met.

The sub-steps a to F are substantially similar to the steps b1 to b6 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Substep G, if the resource allocation for the first uplink subframe is unsuccessful, or there is no resource completely consistent with the resource of the first uplink subframe in the idle resource of the second uplink subframe, or the resource of the first uplink subframe cannot bear the retransmission data of the second uplink subframe, allocating the resource in the second uplink subframe;

substep H, recording the allocated resource as R1 if the resource allocation for the second uplink subframe is successful;

step I, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe;

step J, if the determination result of step I is present, determining whether resource R2 of the second uplink subframe can carry the retransmission data of the first uplink subframe;

and a substep K, if the judgment result of the substep J is positive, determining that the condition for executing the multi-frame scheduling is satisfied.

The sub-step G-sub-step K are substantially similar to the step b 7-step b11 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

Step S807, if the condition of executing multi-frame scheduling is met, scheduling the first uplink subframe and the second uplink subframe to preferentially execute multi-frame scheduling;

when the condition of executing multi-frame scheduling is determined to be met in the sub-step F, simultaneously scheduling the first uplink sub-frame and the second uplink sub-frame according to the resource R1 of the first uplink sub-frame;

and when the condition of executing the multi-frame scheduling is determined to be met in the sub-step K, simultaneously scheduling the first uplink sub-frame and the second uplink sub-frame according to the resource R2 of the second uplink sub-frame.

The specific process of step S807 can refer to the related description of step b15 in the second embodiment, and this embodiment will not be discussed in detail here.

Step S808, if the condition for performing multi-frame scheduling is not satisfied, scheduling the first uplink subframe or the second uplink subframe to perform single-frame scheduling.

This step S808 corresponds to step b16 of the second embodiment, and specifically includes:

step i, when the resource allocation for the second uplink subframe is unsuccessful, judging whether the resource allocation identifier is true; if so, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; if not, it is indicated that the resource allocation of the first uplink subframe and the second uplink subframe fails, so that the resource cannot be allocated to the user equipment, and the scheduling process of the uplink subframe cannot be executed.

Sub-step ii, when there is no resource completely consistent with the resource of the second uplink subframe in the idle resource of the first uplink subframe, or the resource of the second uplink subframe cannot bear the retransmission data of the first uplink subframe, determining whether the resource allocation identifier is true;

if the judgment result in the substep ii is yes, respectively acquiring the times of retransmission of the retransmission data of the first uplink subframe and the times of retransmission of the retransmission data of the second uplink subframe; when the retransmission times of the retransmission data of the first uplink subframe are more than or equal to the retransmission times of the retransmission data of the second uplink subframe, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; when the number of times that the retransmission data of the first uplink subframe has been retransmitted is less than the number of times that the retransmission data of the second uplink subframe has been retransmitted, scheduling the second uplink subframe according to resource R2 of the second uplink subframe;

and iv, if the judgment result of the substep ii is negative, scheduling the second uplink subframe according to the resource R2 of the second uplink subframe.

The sub-steps i to iv are substantially similar to the steps b12 to b14 of the second embodiment, and the specific process can be as described with reference to the second embodiment.

The method for scheduling an uplink subframe according to the third embodiment is basically similar to the process of the foregoing embodiment, and the specific process may refer to the related description of the foregoing embodiment two.

It should be noted that, corresponding to the second embodiment, the first uplink subframe in this embodiment corresponds to the uplink subframe n + k in the second embodiment, and the second uplink subframe corresponds to the uplink subframe n +7 in the second embodiment. Of course, the first uplink subframe may also be n +7, and the second uplink subframe is n + k, and those skilled in the art may perform corresponding processing according to actual situations, which is not limited in this embodiment of the present application.

The method for scheduling the uplink subframe provided by the embodiment of the application can bear the resources allocated to two different uplink subframes by issuing one PDCCH through a dynamic selection scheduling mode when multi-frame scheduling is adopted, so that PDCCH resources can be saved, more users can be scheduled, and the cell capacity can be increased.

Referring to fig. 9, a block diagram of a structure of a system for scheduling uplink subframes according to a fourth embodiment of the present application is shown, where the uplink subframes include a first uplink subframe and a second uplink subframe, and the system includes: the device comprises a sorting module 901, a to-be-transmitted data judging module 902, an initial transmission judging module 903, an initial transmission single-frame scheduling module 904, an initial transmission multi-frame scheduling module 905, a retransmission judging module 906, a retransmission multi-frame scheduling module 907 and a retransmission single-frame scheduling module 908.

Wherein,

a sorting module 901, configured to sort priorities of user equipments and execute a process of scheduling an uplink subframe for a user equipment with a highest priority

A to-be-transmitted data determining module 902, configured to determine whether to transmit data as initial transmission data or retransmission data;

a first transmission determining module 903, configured to enter a first transmission process and determine whether the first uplink subframe or the second uplink subframe meets a condition for performing single frame scheduling when a determination result of the to-be-transmitted data determining module is first transmission data;

the initial transmission judging module 903 includes:

a difference judgment submodule for calculating D_initDifference D from D1_wait1 or D_initDifference D from D2_wait2, judging whether the difference value is 0;

a difference value determining sub-module for determining the difference value D_waitWhen 1 is 0, determining that the first uplink subframe meets the condition of executing single frame scheduling; when the difference D_wait2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling;

a first initial pass determination submodule for determining whether the comparison result of the first comparison submodule is D_trans1Greater than D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when the comparison result of the first comparison submodule is D_trans1Is less than D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling; when the comparison result of the first comparison submodule is D_trans1Is equal to D_trans2Determining that the first uplink subframe or the second uplink subframe meets the condition for executing single frame scheduling;

a first initial transmission idle resource judgment submodule used for judging if D is_waitWhen the 2/D2 is greater than or equal to a preset threshold value, judging whether resources which are completely consistent with the resources R2 of the second uplink subframe exist in idle resources of the first uplink subframe;

when the idle resources of the first uplink sub-frame do not have the resources completely consistent with the resources R2 of the second uplink sub-frame, the second initial transmission recording sub-module records the maximum value D of the bearable initial transmission data_trans2＝D2；

A third initial transmission recording submodule, configured to record a maximum value D of the initial transmission data that can be carried when a resource that is completely consistent with the resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe_trans2＝min(2*D2，D_init)；

A second comparison submodule for comparing D of the first initial record submodule record_trans1And D of the third initial recording submodule record_trans2The size of (d);

a second initial transmission determining submodule for determining whether the comparison result of the second comparing submodule is D_trans1Greater than or equal to D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when the comparison result of the second comparison submodule is D_trans1Is less than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling;

a second initial transmission idle resource judgment submodule used for judging if D is_waitWhen the 1/D1 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in idle resources of a second uplink subframe;

when the idle resources of the second uplink sub-frame do not have the resources completely consistent with the resources R1 of the first uplink sub-frame, the first initial transmission recording sub-module records the maximum value D of the bearable initial transmission data_trans1＝D1；

A fourth initial transmission recording submodule, configured to record a maximum value D of initial transmission data that can be carried when a resource that is completely consistent with the resource R1 of the first uplink subframe exists in the idle resources of the second uplink subframe_trans1＝min(2*D1，D_init)；

The second threshold value judgment sub-module judges whether Dwait2/D2 is smaller than a preset threshold value;

the first initial transmission idle resource judgment submodule is inD_waitWhen the 2/D2 is greater than or equal to a preset threshold value, judging whether resources which are completely consistent with the resources R2 of the second uplink subframe exist in idle resources of the first uplink subframe;

the second initial record submodule is regarded as D_waitWhen the 2/D2 is smaller than a preset threshold value, or a resource which is completely consistent with the resource R2 of the second uplink subframe does not exist in the idle resource of the first uplink subframe, recording the maximum value D of the bearable initial transmission data_trans2＝D2；

A third comparison submodule for comparing D of the fourth initial transmission record submodule record_trans1And D of the second initial recording submodule record_trans2The size of (d);

a third initial transmission determining submodule for determining whether the comparison result of the third comparing submodule is D_trans1Greater than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling; when the comparison result of the third comparison sub-module is D_trans1Less than or equal to D_trans2And then, determining that the second uplink subframe meets the condition for executing the single-frame scheduling.

And the fourth initial transmission determining submodule is used for determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling.

An initial single frame scheduling module 904, configured to schedule the first uplink subframe or the second uplink subframe to preferentially perform single frame scheduling when the initial transmission determining module determines that the condition for performing single frame scheduling is met;

the initial single frame scheduling module 904 comprises:

a first primary single frame scheduling sub-module, configured to schedule the first uplink subframe according to the allocated resource R1 when the first uplink subframe meets the condition for performing single frame scheduling;

and the second primary single-frame scheduling submodule is used for scheduling the second uplink subframe according to the allocated resource R2 when the second uplink subframe meets the condition for executing single-frame scheduling.

An initial transmission multi-frame scheduling module 905, configured to schedule the first uplink subframe and the second uplink subframe to perform multi-frame scheduling when the initial transmission determining module determines that the condition for performing single-frame scheduling is not satisfied;

the initial transmission multi-frame scheduling module 905 includes:

a comparison submodule for comparing the D_trans1And D_trans2The size of (d);

a first initial transmission multi-frame scheduling submodule used for D_trans1Greater than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R1;

a second initial transmission multi-frame scheduling submodule used for D_trans1Is less than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R2;

a third initial transmission multi-frame scheduling submodule used for D_trans1Is equal to D_trans2The first uplink subframe and the second uplink subframe are scheduled according to the allocated resource R1 or R2.

A retransmission judging module 906, configured to enter a retransmission flow and judge whether the first uplink subframe and the second uplink subframe meet a condition for performing multi-frame scheduling when a judgment result of the to-be-transmitted data judging module is retransmission data;

the fourth condition is:

The retransmission determining module 906 includes:

the first retransmission determining submodule is used for determining that the condition for executing multi-frame scheduling is met when the judgment result of the first retransmission bearing data judging submodule is yes;

the second retransmission allocation submodule is used for allocating resources in the second uplink subframe when the resources are unsuccessfully allocated aiming at the first uplink subframe, or resources which are completely consistent with the resources of the first uplink subframe do not exist in idle resources of the second uplink subframe, or the resources of the first uplink subframe cannot bear retransmission data of the second uplink subframe;

the second retransmission recording submodule is used for recording the allocated resource as R2 when the resource allocation for the second uplink subframe is successful;

a second retransmission idle resource judgment submodule, configured to judge whether a resource completely consistent with resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe;

the second retransmission carried data judgment submodule is used for judging whether the resource R2 of the second uplink subframe can carry the retransmission data of the first uplink subframe or not when the judgment result of the second retransmission idle resource judgment submodule is that the second retransmission carried data exists;

and the second retransmission determining submodule is used for determining that the condition for executing the multi-frame scheduling is met when the judgment result of the second retransmission carrying data judgment submodule is yes.

A retransmission multi-frame scheduling module 907 for scheduling the first uplink subframe and the second uplink subframe to preferentially perform multi-frame scheduling when the retransmission judging module judges that the condition for performing multi-frame scheduling is satisfied;

and a retransmission single-frame scheduling module 908, configured to schedule the first uplink subframe or the second uplink subframe to perform single-frame scheduling when the retransmission determining module determines that the condition for performing multi-frame scheduling is not satisfied.

The retransmission single frame scheduling module 908 comprises:

the first allocation identifier judgment submodule is used for judging whether the resource allocation identifier is true or not when the resource allocation for the second uplink subframe is unsuccessful;

the first scheduling submodule is used for scheduling the first uplink subframe according to the resource R1 of the first uplink subframe when the judgment result of the first allocation identification judgment submodule is yes;

a second allocation identifier determining sub-module, configured to determine whether the resource allocation identifier is true when there is no resource completely consistent with the resource of the second uplink subframe in the idle resource of the first uplink subframe, or the resource of the second uplink subframe cannot carry retransmission data of the first uplink subframe;

the second scheduling submodule is used for respectively acquiring the times of retransmission of the retransmission data of the first uplink subframe and the times of retransmission of the retransmission data of the second uplink subframe when the judgment result of the second distribution identification judgment submodule is yes; when the retransmission times of the retransmission data of the first uplink subframe are more than or equal to the retransmission times of the retransmission data of the second uplink subframe, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; when the number of times that the retransmission data of the first uplink subframe has been retransmitted is less than the number of times that the retransmission data of the second uplink subframe has been retransmitted, scheduling the second uplink subframe according to resource R2 of the second uplink subframe; and when the judgment result of the second allocation identification judgment submodule is negative, scheduling the second uplink subframe according to the resource R2 of the second uplink subframe.

According to the embodiment of the application, aiming at the condition that one downlink subframe simultaneously schedules two uplink subframes, different scheduling modes are selected to schedule the uplink subframes according to different data to be transmitted. When the data to be transmitted is initial transmission data, judging whether the scheduled uplink subframe meets the condition for executing single-frame scheduling, and if the condition for executing single-frame scheduling is met, preferentially executing single-frame scheduling; and when the data to be transmitted is retransmission data, judging whether the scheduled uplink subframe meets the condition of executing multi-frame scheduling, and if so, preferentially executing the multi-frame scheduling.

Because the multi-frame scheduling process is relatively complex, the embodiment of the application can obviously reduce the processing complexity of the base station equipment by passively using the multi-frame scheduling for the initially transmitted data, particularly under the scene of more small data traffic, and can also adaptively select the better bearing capacity between the single-frame scheduling and the multi-frame scheduling, thereby optimizing the system performance; and for retransmission data, multi-frame scheduling is actively used, so that the data transmission efficiency is improved, the service delay is reduced, and the user perception is improved. According to the embodiment of the application, through a dynamic selection scheduling mode, when multi-frame scheduling is adopted, resources allocated to two different uplink subframes can be borne by issuing one PDCCH, so that PDCCH resources can be saved, more users can be scheduled, and the cell capacity is increased.

For the system embodiment, since it is basically similar to the method embodiment, the description is simple, and for the relevant points, refer to the partial description of the method embodiment.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The application may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, etc. that perform particular tasks or implement particular abstract data types. The application may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer storage media including memory storage devices.

While, for purposes of simplicity of explanation, the foregoing method embodiments have been described as a series of acts or combination of acts, it will be appreciated by those skilled in the art that the present invention is not limited by the illustrated ordering of acts, as some steps may occur in other orders or concurrently with other steps in accordance with the invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.

Finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The use of the phrase "including a" does not exclude the presence of other, identical elements in the process, method, article, or apparatus that comprises the same element, whether or not the same element is present in all of the same element.

The method and system for scheduling uplink subframes provided by the present application are introduced in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present application, and the description of the above embodiment is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A method for scheduling uplink subframes, wherein the uplink subframes include a first uplink subframe and a second uplink subframe, the method comprising:

judging whether the data to be transmitted is initial transmission data or retransmission data;

if the data is initially transmitted, entering an initial transmission process, and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling;

if the condition for executing single-frame scheduling is met, scheduling the first uplink subframe or the second uplink subframe to preferentially execute single-frame scheduling;

if the condition for executing single-frame scheduling is not met, scheduling the first uplink subframe and the second uplink subframe to execute multi-frame scheduling;

if the data is retransmitted, entering a retransmission process, and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling;

if the condition of executing multi-frame scheduling is met, scheduling the first uplink subframe and the second uplink subframe to preferentially execute multi-frame scheduling;

if the condition for executing multi-frame scheduling is not met, scheduling the first uplink subframe or the second uplink subframe to execute single-frame scheduling;

the step of entering the initial transmission process and judging whether the first uplink subframe or the second uplink subframe meets the condition of executing single-frame scheduling comprises the following steps:

obtaining the total quantity D of the initial transmission data_init；

Allocating resources for the first uplink subframe or the second uplink subframe, and recording the allocated resources as R1 or R2;

acquiring an initial transfer data volume D1 carried by the allocated resource R1 or an initial transfer data volume D2 carried by the allocated resource R2;

calculating the D_initDifference D from D1_wait1 or D_initDifference D from D2_wait2, judging whether the difference value is 0;

when the difference D_waitWhen 1 is 0, determining that the first uplink subframe meets the condition of executing single frame scheduling; when the difference D_wait2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling;

the condition for executing the multi-frame scheduling is that the first uplink subframe and the second uplink subframe both comprise retransmission data, and any one uplink subframe meets a fourth condition;

the fourth condition is:

when the resource is allocated to any uplink subframe, the resource allocation is successful; and resources completely consistent with the resources of any uplink subframe exist in the idle resources of the other uplink subframe; the resource of any uplink subframe can bear retransmission data of another uplink subframe;

the step of entering the retransmission process and judging whether the first uplink subframe and the second uplink subframe meet the condition of executing multi-frame scheduling comprises the following steps:

when the first uplink subframe and the second uplink subframe comprise retransmission data, allocating resources in the first uplink subframe, and setting a resource allocation identifier as false;

if the resource allocation for the first uplink subframe is successful, recording the allocated resource as R1, and setting a resource allocation identifier as true;

judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in the idle resources of the second uplink subframe;

if the idle resources of the second uplink subframe have resources completely consistent with the resources R1 of the first uplink subframe, judging whether the resources R1 of the first uplink subframe can bear the retransmission data of the second uplink subframe;

if the resource R1 of the first uplink subframe can carry the retransmission data of the second uplink subframe, it is determined that the condition for performing multi-frame scheduling is satisfied.

2. The method according to claim 1, wherein the step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe satisfies a condition for performing single frame scheduling further comprises:

when D is present_wait1 and D_waitWhen 2 is not 0, D is judged_waitWhether the 1/D1 is smaller than a preset threshold value;

if D is_waitIf 1/D1 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans1＝D1；

Judgment of D_waitWhether 2/D2 is smaller than a preset threshold value;

if D is_waitIf 2/D2 is less than the preset threshold value, recording the maximum value D of the initial transmission data which can be carried_trans2＝D2；

Comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Greater than D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2Then, determining that the second uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is equal to D_trans2And then determining that the first uplink subframe or the second uplink subframe meets the condition for executing the single frame scheduling.

3. The method according to claim 2, wherein the step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe satisfies a condition for performing single frame scheduling further comprises:

if D is_waitIf the 2/D2 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe;

if no resource completely consistent with the resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe, recording the maximum value D of the bearable initial transmission data_trans2Step D2;

if the idle resources of the first uplink subframe have resources completely consistent with the resources R2 of the second uplink subframe, recording the maximum value D of the initial transmission data which can be borne_trans2＝min(2*D2，D_init)；

Comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Greater than or equal to D_trans2Then, determining that the first uplink subframe meets the condition for executing single frame scheduling; when D is present_trans1Is less than D_trans2And determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling.

4. The method according to claim 3, wherein the step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe satisfies a condition for performing single frame scheduling further comprises:

if D is_waitIf the 1/D1 is greater than or equal to a preset threshold value, judging whether resources completely consistent with the resources R1 of the first uplink subframe exist in idle resources of a second uplink subframe;

if no resource completely consistent with the resource R1 of the first uplink subframe exists in the idle resources of the second uplink subframe, recording the maximum value D of the bearable initial transmission data_trans1Step D1;

if the idle resources of the second uplink subframe have resources completely consistent with the resources R1 of the first uplink subframe, recording the maximum value D of the initial transmission data which can be borne_trans1＝min(2*D1，D_init)。

5. Method according to claim 4, characterized in that the maximum value D of the loadable initial transfer data is recorded_trans1＝min(2*D1，D_init) Then also comprises the following steps:

judgment of D_waitWhether 2/D2 is smaller than a preset threshold value;

if D is_waitIf the 2/D2 is less than a preset threshold value, or no resource completely consistent with the resource R2 of the second uplink subframe exists in the idle resources of the first uplink subframe, recording the maximum value D of the bearable initial transmission data_trans2＝D2；

Comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Greater than D_trans2Determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling; when D is present_trans1Less than or equal to D_trans2And then, determining that the second uplink subframe meets the condition for executing the single-frame scheduling.

6. The method according to claim 5, wherein the step of entering the initial transmission process and determining whether the first uplink subframe or the second uplink subframe satisfies a condition for performing single frame scheduling further comprises:

And determining that the first uplink subframe and the second uplink subframe do not meet the condition of executing single-frame scheduling.

7. The method of claim 6, wherein the step of scheduling the first uplink subframe or the second uplink subframe to preferentially perform single frame scheduling comprises:

8. The method of claim 6, wherein the step of scheduling the first uplink subframe and the second uplink subframe to perform multi-frame scheduling comprises:

comparing said D_trans1And D_trans2The size of (d);

when D is present_trans1Is less than D_trans2Then, scheduling the first uplink subframe and the second uplink subframe according to the allocated resource R2;

9. The method according to claim 1, wherein the step of determining whether the first uplink subframe and the second uplink subframe satisfy a condition for performing multi-frame scheduling further comprises:

if the resource allocation for the first uplink subframe is unsuccessful, or no resource completely consistent with the resource of the first uplink subframe exists in the idle resource of the second uplink subframe, or the resource of the first uplink subframe cannot bear the retransmission data of the second uplink subframe, allocating the resource in the second uplink subframe;

if the resource allocation for the second uplink subframe is successful, recording the allocated resource as R2;

judging whether resources completely consistent with the resources R2 of the second uplink subframe exist in the idle resources of the first uplink subframe;

if the idle resources of the first uplink subframe have resources completely consistent with the resources R2 of the second uplink subframe, judging whether the resources R2 of the second uplink subframe can bear the retransmission data of the first uplink subframe;

and if the resource R2 of the second uplink subframe can bear the retransmission data of the first uplink subframe, determining that the condition of executing multi-frame scheduling is met.

10. The method of claim 9,

when the resource allocation for the second uplink subframe is unsuccessful, the step of scheduling the first uplink subframe or the second uplink subframe to execute single frame scheduling comprises:

judging whether the resource allocation identifier is true, if so, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe;

when there is no resource completely consistent with the resource of the second uplink subframe in the idle resource of the first uplink subframe, or the resource of the second uplink subframe cannot bear the retransmission data of the first uplink subframe, the step of scheduling the first uplink subframe or the second uplink subframe to execute single frame scheduling includes:

judging whether the resource allocation identifier is true;

if so, respectively acquiring the times of retransmission of the retransmission data of the first uplink subframe and the times of retransmission of the retransmission data of the second uplink subframe; when the retransmission times of the retransmission data of the first uplink subframe are more than or equal to the retransmission times of the retransmission data of the second uplink subframe, scheduling the first uplink subframe according to the resource R1 of the first uplink subframe; when the number of times that the retransmission data of the first uplink subframe has been retransmitted is less than the number of times that the retransmission data of the second uplink subframe has been retransmitted, scheduling the second uplink subframe according to resource R2 of the second uplink subframe;

if not, the second uplink subframe is scheduled according to the resource R2 of the second uplink subframe.

11. The method of claim 1, before determining whether the data to be transmitted is initial transmission data or retransmission data, further comprising:

and sequencing the priority of each user equipment, and executing the process of scheduling the uplink subframe for the user equipment with the highest priority.

12. The method according to claim 1, wherein the first uplink subframe and/or the second uplink subframe are scheduled by a downlink subframe n, where n is a sequence number of the downlink subframe;

the first uplink subframe is n + k, and the second uplink subframe is n + 7; wherein k is a time delay between the downlink subframe n and the first uplink subframe n + k, and the time delay is in units of subframes;

or,

the first uplink subframe is n +7, and the second uplink subframe is n + k; and k is the time delay between the downlink subframe n and the second uplink subframe n + k, and the time delay takes a subframe as a unit.

13. A system for scheduling uplink subframes, wherein the uplink subframes include a first uplink subframe and a second uplink subframe, the system comprising:

the retransmission single-frame scheduling module is used for scheduling the first uplink subframe or the second uplink subframe to execute single-frame scheduling when the retransmission judging module judges that the condition for executing multi-frame scheduling is not met;

wherein, the initial transmission judging module comprises:

a difference value determining sub-module for determining the difference value D_waitWhen the number 1 is 0, the number of the carbon atoms is,determining that the first uplink subframe meets the condition for executing single frame scheduling; when the difference D_wait2 is 0, determining that the second uplink subframe meets the condition of executing single frame scheduling;

the fourth condition is:

the retransmission judging module comprises:

14. The system of claim 13, wherein the initial transmission determination module further comprises: