CN102932934B - A kind of method of simultaneously carrying out semi-persistent scheduling services and dynamic dispatching business - Google Patents

Abstract

The present invention provides a method for simultaneously performing semi-static scheduling (SPS) services and dynamic scheduling (DS) services, A, judging whether the current DRB carries SPS services, and if so, performing step B; otherwise, go to step C; B 1. Determine whether the current time slot is at the point of the SPS repetition period and the current time slot has SPS service data to be transmitted. If so, set the scheduling priority of the current DRB to SPS to be scheduled, otherwise directly perform step C; C. Determine the current DRB Whether the scheduling priority of the bearer service is higher than the highest scheduling priority of the scheduled user, if so, use the scheduling priority of the current DRB bearer service as the highest scheduling priority of the scheduled user; otherwise directly perform step D; D, for the scheduled user Schedule the business with the highest scheduling priority of the user for scheduling, and allocate time-frequency resources.

Description

A method for performing semi-static dispatching service and dynamic dispatching service at the same time

technical field

The present invention relates to the technical field of wireless communication, in particular to a method for simultaneously performing semi-persistent scheduling (Semi-Persistent Schedule, SPS) services and dynamic scheduling (Dynamic Schedule, DS) services.

Background technique

Common service scheduling methods in LTE include semi-persistent scheduling and dynamic scheduling. The semi-persistent scheduling method means that in the scheduling transmission process of LTE, the base station (eNB) indicates the current scheduling information of the user equipment (UE) through the physical downlink control channel (PDCCH) during the initial scheduling. The scheduling information of the service data is sent or received at the same time-frequency resource position every fixed period. Dynamic scheduling means that before sending service data each time, the base station sends scheduling instruction information to the user equipment, and the user equipment receives service data on the time-frequency resources indicated by the scheduling instruction information.

At present, in the LTE system, there is a scenario where the same user equipment has both semi-persistent scheduling services and dynamic scheduling services. Therefore, when allocating resources to users, it is necessary to consider designing dynamic services that can be transmitted within the interval of the semi-static scheduling repetition period, or when there is no data to be transmitted at the time point of the semi-static scheduling repetition period, so as to fully utilize resources.

Contents of the invention

The invention provides a method for performing SPS service and DS service simultaneously, which can improve resource utilization rate and meet the respective uplink data transmission requirements of the two services.

The embodiment of the present invention proposes a method for performing SPS service and DS service at the same time. The scheduling priority of the SPS service is higher than the scheduling priority of the DS service. The method includes the following steps:

A. Determine whether the current DRB carries the SPS service, and if so, perform step B; otherwise, go to step C;

B. Determine whether the current time slot is at the point in the SPS repetition period and the current time slot has SPS service data to be transmitted, if so, set the scheduling priority of the current DRB to SPS to be scheduled, otherwise directly perform step C;

C. Determine whether the scheduling priority of the current DRB bearer service is higher than the highest scheduling priority of the scheduled user, and if so, use the current DRB bearer service scheduling priority as the highest scheduling priority of the scheduled user; otherwise, directly execute step D ;

D. Scheduling the service with the highest scheduling priority of the scheduled user, and allocating time-frequency resources.

Preferably, before step A, it further includes: initializing the highest scheduling priority of the scheduled user to 0.

Preferably, before step A, further include:

A1. Traverse the data radio bearer DRBs of the user to be scheduled, and select one of the DRBs of the user to be scheduled as the current DRB.

Preferably, before step D, further include:

Judging whether the current DRB is the last DRB of the scheduled user, if yes, execute step D, otherwise return to step A1.

Preferably, after step D, further include:

F. Determine whether the service with the highest scheduling priority of the scheduled user is an SPS service, and if so, set the DRB service priority corresponding to the SPS service to 0.

From the above technical solutions, it can be seen that since the service carried by DRB is either SPS or DS, and the priority of SPS is higher than that of DS, then when traversing DRBs one by one, the DRB with higher priority will be found and recorded in User highest priority. If it is not in the SPS repetition period, or there is no SPS data to be transmitted although it is in the SPS repetition period, the priority of the SPS service will be lowered, and the DS service will be processed directly according to the service priority; The priority is raised to give priority to SPS business. Through the above method, the SPS service and the DS service can be implemented simultaneously.

Description of drawings

FIG. 1 is a schematic diagram of a processing flow for performing an SPS service and a DS service simultaneously according to an embodiment of the present invention.

detailed description

The core idea of the present invention is: a user has multiple data radio bearers (DataRadioBearer, DRB), and the service carried by the DRB is either SPS or DS, and the priority of the SPS is higher than that of the DS, so when traversing the DRBs one by one, the The DRB with higher priority is found and recorded in the highest priority of the user.

By default, the scheduling priority of the SPS service is higher than that of the DS service, and both the scheduling priority of the SPS service and the scheduling priority of the DS service are greater than 0.

The processing flow of simultaneously performing SPS service and DS service proposed by the embodiment of the present invention is shown in Figure 1, including the following steps:

start.

Step 101: Initialize the highest priority of the scheduled user as 0.

Step 102: traverse the DRBs of the scheduled user, and select one of the DRBs of the user to be scheduled as the current DRB.

Step 103: Determine whether the current DRB carries the SPS service, and if so, execute step 104; otherwise, the current DRB carries the DS service, and go to step 107.

Step 104: Judging whether the current time slot is at the time point of the SPS repetition period, if yes, execute step 105; otherwise, execute step 107.

Step 105: Judging whether there is SPS service data to be transmitted in the current time slot, if yes, execute step 106; otherwise, execute step 107.

Step 106: Set the service priority of the current DRB as SPS to be scheduled.

Step 107: Judging whether the service priority of the DRB is higher than the highest user priority currently recorded, if yes, execute step 108; otherwise, execute step 109.

Step 108: Assign the DRB service priority to the highest priority of the user.

Step 109: Judging whether the current DRB is the last DRB of the user, if yes, go to step 110; otherwise, go back to step 102.

Step 110: Scheduling the service with the highest priority of the scheduled user, and allocating time-frequency resources.

Step 111: Determine whether the highest priority service of the scheduled user is an SPS service, and if so, execute step 112; otherwise, end the process.

Step 112: Set the priority of the DRB service corresponding to the SPS service to 0.

During the processing of the above process, if it is not in the SPS repeat cycle, or if there is no SPS data to be transmitted although it is in the SPS repeat cycle, the priority of the SPS service will be lowered, and the DS service will be processed directly according to the service priority; if it enters the SPS repeat cycle , then increase the priority of the SPS service, and give priority to the SPS service.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (5)

1. carry out a method for semi-persistent scheduling SPS business and dynamic dispatching DS business simultaneously, it is characterized in that, the dispatching priority of SPS business is higher than the dispatching priority of DS business, and the method comprises the steps:

A, judge whether current DRB carries SPS business, if it is perform step B; Otherwise, go to step C;

B, judge whether current time slots is in SPS repetition period moment point and current time slots has SPS business datum to be transmitted, if so, the dispatching priority of current DRB is set to SPS and waits to dispatch, otherwise directly perform step C;

C, judge that the dispatching priority of current DRB bearer service is whether higher than the highest scheduling priority of this scheduled user, if so, using the highest scheduling priority of the dispatching priority of current DRB bearer service as scheduled user; Otherwise directly perform step D;

D, the business of scheduled user's highest scheduling priority to be dispatched, distribute running time-frequency resource.

2. method according to claim 1, is characterized in that, before steps A, comprises further: the highest scheduling priority of scheduled user is initialized as 0.

3. method according to claim 1, is characterized in that, before steps A, comprises further:

A1, traversal treat the Data Radio Bearer DRB of scheduled user, select one as current DRB from the DRB treating scheduled user.

4. method according to claim 3, is characterized in that, before step D, comprises further:

Judge that whether current DRB is last DRB of scheduled user, if so, perform step D, otherwise return steps A 1.

5. the method according to any one of Claims 1-4, is characterized in that, after described step D, comprises further:

Whether F, the business judging the highest scheduling priority of scheduled user are SPS business, if so, DRB service priority corresponding for SPS business are set to 0.