CN111511033B - Resource allocation method and device for short-period semi-persistent scheduling - Google Patents

Resource allocation method and device for short-period semi-persistent scheduling Download PDF

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CN111511033B
CN111511033B CN201910093654.6A CN201910093654A CN111511033B CN 111511033 B CN111511033 B CN 111511033B CN 201910093654 A CN201910093654 A CN 201910093654A CN 111511033 B CN111511033 B CN 111511033B
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sps
period
allocated
ues
resource blocks
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CN111511033A (en
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唐志华
卫淼
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

The application provides a resource allocation method and device for short-period semi-persistent scheduling. The resource allocation method for the short-period semi-static scheduling comprises the following steps: determining User Equipment (UE) which is currently configured to be short-period semi-persistent scheduling (S-SPS), and acquiring an S-SPS period and an S-SPS resource block which are allocated to the UE configured to be the S-SPS; determining an S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block which are distributed to the UE configured to be the S-SPS, wherein the UE to be configured is the UE supporting the S-SPS; and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured. The method and the device reduce interference and improve S-SPS efficiency.

Description

Resource allocation method and device for short-period semi-persistent scheduling
Technical Field
The present application relates to communications technologies, and in particular, to a resource allocation method and apparatus for short-period semi-persistent scheduling.
Background
In a Long Term Evolution (LTE) system, a base station (eNodeB) transmits Control signaling for scheduling User Equipment (UE) using a Physical Downlink Control Channel (PDCCH). When the UE in a connected state is scheduled, the eNB scrambles a control signaling by using a Cell Radio Network Temporary Identity (C-RNTI) of the UE, and the UE can descramble the control signaling transmitted on the PDCCH by using the C-RNTI of the UE after monitoring the control signaling transmitted on the PDCCH. The control signaling includes physical channel resources allocated by the eNB to the UE and a specific Modulation and Coding Scheme (MCS), and the UE performs data transmission and reception on the corresponding physical channel according to the indication in the control signaling.
Two data scheduling modes are defined in the LTE protocol: dynamic Scheduling and Semi-Persistent Scheduling (SPS), wherein in the dynamic Scheduling mode, the eNB has a corresponding PDCCH for each data packet of the UE to notify the occupied resources and transmission mode. In the SPS manner, after an SPS of a UE is activated, in a subsequent data transmission process, the UE transmits or receives data according to a physical channel Resource and MCS allocated to the UE in a PDCCH Control signaling at a corresponding time point according to an SPS period configured by a Radio Resource Control (RRC) message, and when the SPS Resource needs to be modified or released, an eNB may issue an SPS modification or release command by using the PDCCH Control signaling. The third Generation Partnership Project (3rd Generation Partnership Project, 3GPP) protocol specifies an SPS scheduling period of a minimum of 10ms, which is difficult to meet the requirements of low-latency services (e.g., mobile games, red packet snatching, etc.).
At present, there is a pre-scheduling scheme, where an eNB actively allocates a physical channel resource and an MCS to a UE once every other period, where the period may be 1-5ms, the UE may send a Buffer Status Report (BSR) according to the physical channel resource and the MCS, and the eNB may allocate the required physical channel resource and the MCS to the UE through dynamic scheduling.
However, if the SPS period configuration is short in the SPS, the number of UEs capable of performing SPS scheduling is small, PDCCH overhead is increased, and interference is caused to the neighboring cell.
Disclosure of Invention
The application provides a resource allocation method and device for short-period semi-persistent scheduling, which are used for reducing interference and improving S-SPS efficiency.
In a first aspect, the present application provides a resource allocation method for short-period semi-persistent scheduling, including:
determining User Equipment (UE) which is currently configured to be short-period semi-persistent scheduling (S-SPS), and acquiring an S-SPS period and an S-SPS resource block which are allocated to the UE configured to be the S-SPS; determining an S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block which are distributed to the UE configured to be the S-SPS, wherein the UE to be configured is the UE supporting the S-SPS; and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
The method and the device adaptively adjust the S-SPS period of the UE to be configured according to the S-SPS period of the UE configured to the S-SPS and the S-SPS resource block, flexibly configure the resource of the S-SPS UE in the communication network, do not need extra signaling overhead, reduce interference and improve the S-SPS efficiency.
In one possible implementation manner, determining the S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block allocated to the UE configured to be S-SPS comprises the following steps: when the S-SPS resource block allocated to the UE configured to be S-SPS is zero, determining the S-SPS period of the UE to be configured to be the shortest period, wherein the shortest period is the shortest one of the set more than two period durations arranged in an increasing mode; when the S-SPS period and the S-SPS resource block allocated to the UE configured to be S-SPS are not zero, determining whether an unallocated S-SPS resource block exists according to the S-SPS period and the S-SPS resource block allocated to the UE configured to be S-SPS; and if the unallocated S-SPS resource block is determined to exist, determining the S-SPS period of the UE to be configured according to the period corresponding to the unallocated S-SPS resource block.
In one possible implementation manner, determining the S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block allocated to the UE configured as the S-SPS further includes: if the unallocated S-SPS resource blocks do not exist, determining whether the number of the UEs configured to be S-SPS is smaller than a configurable total number, wherein the configurable total number is the total number of the UEs capable of performing S-SPS corresponding to the longest S-SPS period allocated to the UEs configured to be S-SPS; if the number of the UE configured to be S-SPS is less than the configurable total number, determining the shortest one of S-SPS periods allocated to the UE configured to be S-SPS, determining the next period duration with the period duration of more than two periods equal to the period duration of the shortest one as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS period of the UE corresponding to the shortest one into the next period duration; if the number of the UEs configured with S-SPS is equal to the configurable total number, determining the next period duration with more than two period durations equal to the period duration of the S-SPS periods allocated to the UEs configured with S-SPS as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS periods allocated to one or more of the UEs configured with S-SPS as the next period duration.
In one possible implementation manner, allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured includes: determining the scheduling time of the UE to be configured according to the S-SPS period of the UE to be configured; and allocating the S-SPS resource blocks to the UE to be configured from the unallocated S-SPS resource blocks at the scheduling time.
In one possible implementation manner, allocating an S-SPS resource block to the UE to be configured according to an S-SPS period of the UE to be configured further includes: and if the S-SPS resource blocks which are not allocated do not exist at the scheduling time, carrying out multi-user multi-input multi-output MU-MIMO pairing on the UE to be configured and other UEs, allocating the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks which are allocated to the other UEs at the scheduling time, wherein the other UEs are the UEs which are allocated with the S-SPS resource blocks at the scheduling time in the UEs which are allocated with the S-SPS resource blocks at the scheduling time.
In one possible implementation manner, allocating an S-SPS resource block to the UE to be configured according to an S-SPS period of the UE to be configured further includes: and allocating a Modulation Coding Scheme (MCS) to the UE to be configured.
In one possible implementation manner, the method further includes: and if the cache data volume of the UE to be configured is larger than or equal to the set threshold, deactivating the UE to be configured and carrying out dynamic scheduling.
In a second aspect, the present application provides a resource configuration apparatus for short-period semi-persistent scheduling, including:
the determining module is used for determining the user equipment UE which is currently configured to the short-period semi-persistent scheduling S-SPS, and acquiring an S-SPS period and an S-SPS resource block which are distributed to the UE configured to the S-SPS;
the allocation module is used for determining the S-SPS period of the UE to be allocated according to the S-SPS period and the S-SPS resource block allocated to the UE which is allocated to the S-SPS, and the UE to be allocated is the UE supporting the S-SPS; and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
The method and the device adaptively adjust the S-SPS period of the UE to be configured according to the S-SPS period of the UE configured to the S-SPS and the S-SPS resource block, flexibly configure the resource of the S-SPS UE in the communication network, do not need extra signaling overhead, reduce interference and improve the S-SPS efficiency.
In a possible implementation manner, the allocation module is specifically configured to determine, when an S-SPS resource block allocated to a UE configured as an S-SPS is zero, an S-SPS period of the UE to be configured as a shortest period, where the shortest period is the shortest one of two or more set period durations arranged in an increasing manner; when the S-SPS period and the S-SPS resource block allocated to the UE configured to be S-SPS are not zero, determining whether an unallocated S-SPS resource block exists according to the S-SPS period and the S-SPS resource block allocated to the UE configured to be S-SPS; and if the unallocated S-SPS resource block is determined to exist, determining the S-SPS period of the UE to be configured according to the period corresponding to the unallocated S-SPS resource block.
In a possible implementation manner, the allocating module is further configured to determine whether the number of UEs configured as S-SPS is less than a configurable total number if it is determined that there are no unallocated S-SPS resource blocks, where the configurable total number is a total number of UEs available for S-SPS corresponding to a longest S-SPS period allocated to the UEs configured as S-SPS; if the number of the UE configured to be S-SPS is less than the configurable total number, determining the shortest one of S-SPS periods allocated to the UE configured to be S-SPS, determining the next period duration with the period duration of more than two periods equal to the period duration of the shortest one as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS period of the UE corresponding to the shortest one into the next period duration; if the number of the UEs configured with S-SPS is equal to the configurable total number, determining the next period duration with more than two period durations equal to the period duration of the S-SPS periods allocated to the UEs configured with S-SPS as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS periods allocated to one or more of the UEs configured with S-SPS as the next period duration.
In a possible implementation manner, the allocation module is specifically configured to determine a scheduling time of the UE to be configured according to an S-SPS period of the UE to be configured; and allocating the S-SPS resource blocks to the UE to be configured from the unallocated S-SPS resource blocks at the scheduling time.
In a possible implementation manner, the allocating module is further configured to, if there is no unallocated S-SPS resource block at the scheduling time, perform multi-user multiple input multiple output MU-MIMO pairing on the UE to be configured and other UEs, allocate the S-SPS resource block to the UE to be configured from the S-SPS resource blocks allocated to the other UEs at the scheduling time, and the other UEs are UEs allocated with the S-SPS resource block at the scheduling time from the UEs already configured to the S-SPS.
In a possible implementation manner, the allocating module is further configured to allocate a modulation and coding scheme, MCS, to the UE to be configured.
In one possible implementation manner, the method further includes:
and the deactivation module is used for deactivating the UE to be configured and carrying out dynamic scheduling if the cache data volume of the UE to be configured is greater than or equal to a set threshold.
In a third aspect, the present application provides a base station apparatus, including:
one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method for resource allocation for short-period semi-persistent scheduling as described in any of the first aspects above.
In a fourth aspect, the present application provides a computer-readable storage medium storing instructions for executing the resource allocation method for short-period semi-persistent scheduling of any one of the above first aspects when the instructions are executed on a computer.
In a fifth aspect, the present application provides a computer program for performing the resource allocation method for short-period semi-persistent scheduling of any one of the above first aspects when the computer program is executed by a computer.
Drawings
FIG. 1 is a schematic diagram of S-SPS cycles that may be supported by the present application;
FIG. 2 is a flowchart of an embodiment of a resource allocation method for S-SPS according to the present application;
FIG. 3 is a schematic diagram of S-SPS resource allocation of the present application;
FIG. 4 is another diagram of S-SPS resource allocation of the present application;
FIG. 5 is yet another schematic illustration of S-SPS resource allocation of the present application;
FIG. 6 is a further illustration of S-SPS resource allocation of the present application;
FIG. 7 is a fifth schematic diagram of S-SPS resource allocation of the present application;
FIG. 8 is a sixth schematic illustration of S-SPS resource allocation of the present application;
FIG. 9 is a schematic structural diagram of a first embodiment of a resource allocation apparatus for short-period semi-persistent scheduling according to the present application;
fig. 10 is a schematic structural diagram of a second resource allocation apparatus for short-period semi-persistent scheduling according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of a base station device according to an embodiment of the present invention.
Detailed Description
To make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be clearly and completely described below with reference to the drawings in the present application, and it is obvious that the described embodiments are some, but not all embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the application, part of or all of the bandwidth is used for short-period semi-persistent scheduling (short-SPS, abbreviated as S-SPS), and the bandwidth used for S-SPS is divided into a plurality of resource blocks, and a base station device usually allocates one S-SPS resource block to one S-SPS UE, at least to ensure that the S-SPS UE can report a BSR. For example, fig. 1 is a schematic diagram of an S-SPS period that can be supported by the present application, as shown in fig. 1, the S-SPS period includes 1-5ms, and there is one S-SPS resource block, and when the S-SPS period is 1ms, it is equivalent to that the S-SPS UE is scheduled on each ms, so that the one S-SPS resource block can be allocated to only one S-SPS UE; when the S-SPS period is 2ms, the same S-SPS UE is scheduled once every 1ms, so that one S-SPS resource block can be distributed to two S-SPS UEs in turn; by analogy, when the S-SPS period is 5ms, the one S-SPS resource block can be allocated to five S-SPS UEs in turn.
The S-SPS UE has three states including configuration, activation, and deactivation. When the S-SPS UE is accessed, the base station equipment can firstly carry out resource configuration for the S-SPS UE. When the S-SPS resource block is determined to be available, the base station equipment activates the S-SPS UE, and the activated S-SPS UE can send uplink data according to the S-SPS period and the S-SPS resource block configured for the S-SPS UE by the base station equipment. When the buffer data volume of the activated S-SPS UE is large, the base station equipment deactivates the S-SPS UE and performs dynamic scheduling on the S-SPS UE, or when the period of the activated S-SPS UE needs to be reconfigured, the base station equipment also deactivates the S-SPS UE and then reenters a configuration state. The deactivated S-SPS UE base station device may reactivate the deactivated S-SPS UE according to the amount of the buffered data thereof, that is, when the amount of the buffered data of the S-SPS UE is small, the base station device may reactivate.
Fig. 2 is a flowchart of an embodiment of a resource allocation method for S-SPS according to the present application, and as shown in fig. 2, the method of the present embodiment is executed by a base station device, and the resource allocation method for short-period semi-persistent scheduling may include:
step 101, determining UE which is currently configured to S-SPS, and acquiring S-SPS period and S-SPS resource block which are distributed to the UE which is configured to S-SPS.
According to the S-SPS period grade supported by the communication network and the configured S-SPS resource block quantity, determining the quantity of the S-SPS UE which can be supported by the communication network at most at the same time, wherein for example, the S-SPS period is 1ms, the quantity of the S-SPS resource blocks is 2, and then the quantity of the S-SPS UE which can be supported at most is 2; the S-SPS period is 2ms, the number of S-SPS resource blocks is 2, and the maximum supportable number of S-SPS UEs is 4. Therefore, when there is a newly accessed UE to be configured (the UE to be configured is a UE supporting S-SPS), the base station device needs to determine the UE configured as S-SPS first, and acquire the S-SPS period and S-SPS resource block allocated to the UE. For example, fig. 3 is a schematic diagram of the S-SPS resource allocation of the present application, and as shown in fig. 3, the UEs configured as S-SPS include UE1, UE2, and UE3, where the S-SPS period of UE1 is 1ms, the S-SPS periods of UE2 and UE3 are 2ms, UE1 occupies one S-SPS resource block by itself, and UE2 and UE3 occupy another S-SPS resource block by turns.
And step 102, determining the S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block allocated to the UE configured to the S-SPS.
The method for configuring the S-SPS period for the UE to be configured by the base station equipment can comprise the following steps:
when the S-SPS resource block allocated to the UE configured to be S-SPS is zero, determining the S-SPS period of the UE to be configured to be the shortest period, wherein the shortest period is the shortest one of the set more than two period durations arranged in an increasing mode. If the UE which is not configured to be S-SPS in the current communication system does not exist, the S-SPS resource is not occupied, so the base station equipment can configure the UE to be configured with the shortest S-SPS period (1 ms).
And secondly, when the S-SPS period and the S-SPS resource block allocated to the UE configured to the S-SPS are not zero, determining whether an unallocated S-SPS resource block exists according to the S-SPS period and the S-SPS resource block allocated to the UE configured to the S-SPS, and if the unallocated S-SPS resource block exists, determining the S-SPS period of the UE to be configured according to a period corresponding to the unallocated S-SPS resource block. For example, fig. 4 is another schematic diagram of the S-SPS resource allocation of the present application, and as shown in fig. 4, the UEs configured as S-SPS include UE1 and UE2, where the S-SPS period of UE1 is 1ms, the S-SPS period of UE2 is 2ms, UE1 and UE2 respectively occupy one S-SPS resource block, but UE1 is allocated one S-SPS resource block every 1ms, UE2 is allocated one S-SPS resource block every 1ms, it is seen that there is one S-SPS resource block unallocated for 1ms where UE2 is not scheduled, in this case, the UE to be configured (UE3) may occupy the unallocated S-SPS resource block with the S-SPS period of 2ms, and the base station apparatus allocates the S-SPS period and the S-SPS resource block to UE3 as shown in fig. 3. If there are multiple unallocated S-SPS resource blocks, the base station apparatus may select one or more unallocated S-SPS resource blocks to be allocated to the UE3 according to the amount of buffered data of the UE 3.
If the unallocated S-SPS resource blocks are determined to be absent, whether the number of the UE configured to the S-SPS is smaller than a configurable total amount is determined, the configurable total amount is the total number of the UE which can perform the S-SPS and corresponds to the longest one of S-SPS periods allocated to the UE configured to the S-SPS, if the number of the UE configured to the S-SPS is smaller than the configurable total amount, the shortest one of the S-SPS periods allocated to the UE configured to the S-SPS is determined, the next period duration with the period duration more than two periods equal to the period duration of the shortest one is determined as the S-SPS period of the UE to be configured, and the S-SPS period of the UE corresponding to the shortest one is reconfigured to be the next period duration. As can be known from the S-SPS period and S-SPS resource block allocation shown in fig. 1, assuming that the longest S-SPS period allocated to the S-SPS configured UE is n ms, and there are k S-SPS resource blocks, the total configurable amount is n × k, and if the number of the S-SPS configured UEs is less than the total configurable amount, it indicates that the S-SPS UEs may be added under the existing configuration, and the base station device needs to reconfigure a part of the S-SPS configured UEs, so as to allocate the free S-SPS resource blocks to the UEs to be configured. Illustratively, as shown in FIG. 3, UEs that have been configured for S-SPS comprise UE1, UE2, and UE3, wherein, the S-SPS period of the UE1 is 1ms, the S-SPS periods of the UE2 and the UE3 are 2ms, the UE1 independently occupies one S-SPS resource block, the UE2 and the UE3 alternately occupy the other S-SPS resource block, the base station equipment allocates the S-SPS period and the S-SPS resource block to the UE (UE4) to be configured, the next cycle duration (2ms) of the shortest (1ms) of the configured S-SPS cycles in the three UEs may be determined as the S-SPS cycle for UE4, meanwhile, the S-SPS period of the UE1 which is allocated with the period duration of 1ms needs to be reconfigured to be 2ms, the UE1 and the UE4 occupy one S-SPS resource block in turn, FIG. 5 is a further illustration of S-SPS resource allocation of the present application, as shown in FIG. 5 after the base station apparatus allocates S-SPS periods and S-SPS resource blocks to the UE 4. It should be noted that, if the shortest one of the S-SPS periods allocated to the UE configured as the S-SPS is the longest period in the S-SPS period (e.g., 5ms in fig. 1), the S-SPS period of the UE corresponding to the shortest one cannot be reconfigured as the next period.
And if the number of the UEs configured as the S-SPS is equal to the configurable total number, determining the next period duration with more than two period durations equal to the period duration of the S-SPS periods allocated to the UEs configured as the S-SPS periods of the UEs to be configured, and reconfiguring the S-SPS periods allocated to one or more of the UEs configured as the S-SPS periods to be the next period duration. As can be known from the S-SPS period and S-SPS resource block allocation shown in fig. 1, assuming that the longest S-SPS period allocated to the S-SPS configured UE is n ms, and there are k S-SPS resource blocks, the configurable total amount is n × k, and if the number of S-SPS configured UEs has reached the configurable total amount, it indicates that the S-SPS periods of all S-SPS configured UEs are n ms and no S-SPS resource block has been allocated, the base station device needs to expand the S-SPS periods allocated to the S-SPS configured UEs, and reconfigure a part of S-SPS resource blocks in the S-SPS configured UEs, so as to allocate the vacant S-SPS resource blocks to the UEs to be configured. Illustratively, as shown in FIG. 5, the UEs that have been configured for S-SPS comprise UE1, UE2, UE3 and UE4, wherein, the S-SPS periods of the UE1, the UE2, the UE3 and the UE4 are all 2ms, the UE1 and the UE4 occupy one S-SPS resource block in turn, the UE2 and the UE3 occupy the other S-SPS resource block in turn, the base station equipment allocates the S-SPS period and the S-SPS resource block to the UE (UE5) to be configured, the next cycle duration (3ms) of the S-SPS cycles of UE1 and UE4 (or UE2 and UE3) may be determined as the S-SPS cycle of UE5, meanwhile, the S-SPS periods of the UE1 and the UE4 which are allocated with the period duration of 2ms need to be reconfigured to be 3ms, the UE1, the UE4 and the UE5 occupy one S-SPS resource block in turn, FIG. 6 is a further illustration of S-SPS resource allocation of the present application, wherein the base station apparatus allocates S-SPS periods and S-SPS resource blocks to the UE5, as shown in FIG. 6.
And 103, allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
The base station equipment can determine the scheduling time of the UE to be configured according to the S-SPS period of the UE to be configured, and then allocates the S-SPS resource block to the UE to be configured from the unallocated S-SPS resource block at the scheduling time. In addition, the base station device needs to allocate MCS to the UE to be configured, and the base station device may allocate MCS according to the channel condition, but since the channel of the S-SPS UE may fluctuate during the activation period and the MCS may not be adjusted again during the entire activation period, the base station device may appropriately select MCS to be conservative. This process is illustrated in step 102 and will not be described in detail here.
The method and the device adaptively adjust the S-SPS period of the UE to be configured according to the S-SPS period of the UE configured to the S-SPS and the S-SPS resource block, flexibly configure the resource of the S-SPS UE in the communication network, do not need extra signaling overhead, reduce interference and improve the S-SPS efficiency.
In a possible implementation manner, the base station device may perform Multi-User Multiple-Input Multiple-Output (MU-MIMO) pairing, that is, allocate the same S-SPS Resource block to more than two S-SPS UEs, and the base station device allocates different Cyclic Shifts (CS) to the UEs through Radio Resource Control (RRC) messages, so that the UEs may multiplex the same S-SPS Resource block. The base station device may determine how many S-SPS UEs at most one S-SPS resource block may be allocated to according to the spatial degrees of freedom. Exemplarily, as shown in fig. 5, UEs configured as S-SPS include UE1, UE2, UE3 and UE4, wherein S-SPS periods of UE1, UE2, UE3 and UE4 are all 2ms, UE1 and UE4 occupy one S-SPS resource block in turn, UE2 and UE3 occupy another S-SPS resource block in turn, the base station apparatus allocates S-SPS periods and S-SPS resource blocks to UEs to be configured (UE5 and UE6), UE5 may be paired with UE1, UE4, UE6 and UE2 and UE3, respectively, the S-SPS periods of UE5 and UE6 are 1ms, fig. 7 is a fifth schematic diagram of the S-SPS resource allocation of the present application, and the base station apparatus allocates S-SPS periods and S-SPS resource blocks to UE5 and UE6 as shown in fig. 7. Or, the base station device allocates S-SPS periods and S-SPS resource blocks to UEs to be configured (UE5, UE6, UE7, and UE8), may perform MU-MIMO pairing on UE5, UE1, UE6, and UE4, UE7, UE2, UE8, and UE3, respectively, where S-SPS periods of UE5, UE6, UE7, and UE8 are 2ms, fig. 8 is a sixth schematic diagram of S-SPS resource allocation of the present application, and the base station device allocates S-SPS periods and S-SPS resource blocks to UE5, UE6, UE7, and UE8, and is shown in fig. 8. It should be noted that the base station device performs MU-MIMO pairing is not limited to two UE pairings in the example.
The method and the device improve the resource utilization rate by performing MU-MIMO pairing on more than two S-SPS UEs.
In a possible implementation manner, after the base station device allocates the S-SPS resources to the UE to be configured, when the UE is activated, the UE may perform scheduling according to the configuration result of the S-SPS resources, but if the BSR reported by the UE shows that the buffer data amount of the UE is large, the resource is limited only by one S-SPS resource block, and it is difficult to complete uplink data transmission in a short time, the base station device may deactivate the UE, and then perform dynamic scheduling on the UE. At this time, the S-SPS resource block is left empty, and the base station device may reconfigure other S-SPS UEs, including reconfiguring S-SPS periods of other S-SPS UEs, for example, reconfiguring the S-SPS period from 2ms to 1ms, and then allocating the S-SPS resource block at a scheduling time corresponding to a new S-SPS period. Accordingly, if the base station device finds that the amount of buffered data of the UE decreases, it may be reactivated or reconfigured.
Fig. 9 is a schematic structural diagram of a first embodiment of a resource allocation apparatus for short-period semi-persistent scheduling according to the present application, and as shown in fig. 9, the apparatus of the present embodiment may include: the system comprises a determining module 11 and an allocating module 12, wherein the determining module 11 is used for determining User Equipment (UE) which is currently configured to be short-period semi-persistent scheduling (S-SPS), and acquiring an S-SPS period and an S-SPS resource block which are allocated to the UE which is configured to be S-SPS; an allocating module 12, configured to determine an S-SPS period of a UE to be configured according to the S-SPS period and the S-SPS resource block allocated to the UE configured as the S-SPS, where the UE to be configured is a UE supporting the S-SPS; and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
The apparatus of this embodiment may be configured to execute the technical solution of any one of the method embodiments shown in fig. 2 to fig. 8, and the implementation principle and the technical effect are similar, which are not described herein again.
In a possible implementation manner, the allocating module 12 is specifically configured to determine, when the S-SPS resource block allocated to the UE configured as the S-SPS is zero, an S-SPS period of the UE to be configured as a shortest period, where the shortest period is the shortest one of two or more set period durations arranged in an increasing manner; when the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS are not zero, determining whether unallocated S-SPS resource blocks exist according to the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS; and if the unallocated S-SPS resource block is determined to exist, determining the S-SPS period of the UE to be configured according to the period corresponding to the unallocated S-SPS resource block.
In a possible implementation manner, the allocating module 12 is further configured to determine whether the number of UEs configured as S-SPS is less than a configurable total number if it is determined that the unallocated S-SPS resource block does not exist, where the configurable total number is a total number of UEs capable of performing S-SPS corresponding to a longest S-SPS period of the UEs allocated as S-SPS; if the number of the UEs configured as S-SPS is less than the configurable total number, determining the shortest one of the S-SPS periods allocated to the UEs configured as S-SPS, determining the next period duration of which the period durations of the more than two periods are equal to the period duration of the shortest one as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS period of the UE corresponding to the shortest one into the next period duration; if the number of the UEs configured with S-SPS is equal to the configurable total number, determining the next cycle duration which is equal to the cycle duration of the S-SPS cycles allocated to the UEs configured with S-SPS in the more than two cycle durations as the S-SPS cycles of the UEs to be configured, and reconfiguring the S-SPS cycles allocated to one or more of the UEs configured with S-SPS as the next cycle duration.
In a possible implementation manner, the allocating module 12 is specifically configured to determine a scheduling time of the UE to be configured according to an S-SPS period of the UE to be configured; and allocating the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks which are not allocated at the scheduling time.
In a possible implementation manner, the allocating module 12 is further configured to, if there is no unallocated S-SPS resource block at the scheduling time, perform multi-user multiple input multiple output MU-MIMO pairing on the UE to be configured and other UEs, allocate the S-SPS resource block to the UE to be configured from the S-SPS resource blocks allocated to the other UEs at the scheduling time, where the other UEs are UEs allocated with S-SPS resource blocks at the scheduling time in the UEs configured with S-SPS.
In a possible implementation manner, the allocating module 12 is further configured to allocate a modulation and coding scheme MCS to the UE to be configured.
In a possible implementation manner, fig. 10 is a schematic structural diagram of a second embodiment of the resource configuration apparatus for short-period semi-persistent scheduling according to the present application, and as shown in fig. 10, the apparatus of the present embodiment may further include: and a deactivation module 13, configured to deactivate the UE to be configured and perform dynamic scheduling if the amount of the cache data of the UE to be configured is greater than or equal to a set threshold.
The apparatus of this embodiment may be configured to execute the technical solution of any one of the method embodiments shown in fig. 2 to fig. 8, and the implementation principle and the technical effect are similar, which are not described herein again.
Fig. 11 is a schematic structural diagram of an embodiment of a base station apparatus of the present invention, as shown in fig. 11, the base station apparatus includes a processor 20, a memory 21, and a communication device 22; the number of the processors 20 in the base station device may be one or more, and one processor 20 is taken as an example in fig. 11; the processor 20, the memory 21 and the communication means 22 in the base station apparatus may be connected by a bus or other means, and the connection by a bus is exemplified in fig. 11.
The memory 21 is a computer readable storage medium for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the method in any of the embodiments of the present invention shown in fig. 2-8. The processor 20 executes various functional applications and data processing of the base station device by running software programs, instructions and modules stored in the memory 21, that is, implements the above-described resource allocation method for short-period semi-persistent scheduling.
The memory 21 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory 21 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 21 may further include memory located remotely from processor 20, which may be connected to a base station device through a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The communication device 22 may be a device having a transceiving function for communicating with other network devices or a communication network.
In one possible implementation, the present application provides a computer-readable storage medium storing instructions for performing a method in any one of the embodiments shown in fig. 2-8 described above when the instructions are executed on a computer.
In one possible implementation, the present application provides a computer program for performing the method in any of the embodiments shown in fig. 2-8 described above when the computer program is executed by a computer.
Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (16)

1. A resource allocation method for short-period semi-persistent scheduling is characterized by comprising the following steps:
determining User Equipment (UE) which is currently configured to be short-period semi-persistent scheduling (S-SPS), and acquiring an S-SPS period and an S-SPS resource block which are allocated to the UE configured to be the S-SPS;
determining an S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block which are distributed to the UE configured to be the S-SPS, wherein the UE to be configured is the UE supporting the S-SPS;
and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
2. The method of claim 1, wherein determining the S-SPS period of the UE to be configured according to the S-SPS period and S-SPS resource blocks allocated to the UE configured as S-SPS comprises:
when the S-SPS resource block allocated to the UE configured to be S-SPS is zero, determining the S-SPS period of the UE to be configured to be the shortest period, wherein the shortest period is the shortest one of more than two set period durations arranged in an increasing mode;
when the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS are not zero, determining whether unallocated S-SPS resource blocks exist according to the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS;
and if the unallocated S-SPS resource block is determined to exist, determining the S-SPS period of the UE to be configured according to the period corresponding to the unallocated S-SPS resource block.
3. The method of claim 2, wherein determining the S-SPS period of the UE to be configured according to the S-SPS period and S-SPS resource blocks allocated to the UE configured as S-SPS further comprises:
if the unallocated S-SPS resource blocks do not exist, determining whether the number of the UE configured to the S-SPS is smaller than a configurable total number, wherein the configurable total number is the total number of the UE which can perform the S-SPS and corresponds to the longest S-SPS period allocated to the UE configured to the S-SPS;
if the number of the UEs configured as S-SPS is less than the configurable total number, determining the shortest one of the S-SPS periods allocated to the UEs configured as S-SPS, determining the next period duration of which the period durations of the more than two periods are equal to the period duration of the shortest one as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS period of the UE corresponding to the shortest one into the next period duration;
if the number of the UEs configured with S-SPS is equal to the configurable total number, determining the next cycle duration which is equal to the cycle duration of the S-SPS cycles allocated to the UEs configured with S-SPS in the more than two cycle durations as the S-SPS cycles of the UEs to be configured, and reconfiguring the S-SPS cycles allocated to one or more of the UEs configured with S-SPS as the next cycle duration;
and the next period duration is the period of the next duration adjacent to the current period.
4. The method according to any of claims 1-3, wherein said allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured comprises:
determining the scheduling time of the UE to be configured according to the S-SPS period of the UE to be configured;
and allocating the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks which are not allocated at the scheduling time.
5. The method of claim 4, wherein the allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured further comprises:
and if the S-SPS resource blocks which are not allocated at the scheduling time do not exist, carrying out multi-user multi-input multi-output (MU-MIMO) pairing on the UE to be configured and other UEs, allocating the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks which are allocated to the other UEs at the scheduling time, wherein the other UEs are the UEs which are allocated with the S-SPS resource blocks at the scheduling time in the UE which is configured with the S-SPS.
6. The method of claim 4, wherein the allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured further comprises:
and allocating a Modulation Coding Scheme (MCS) to the UE to be configured.
7. The method of any of claims 1-3, 5-6, further comprising:
and if the cache data volume of the UE to be configured is larger than or equal to a set threshold, deactivating the UE to be configured and carrying out dynamic scheduling.
8. A resource allocation apparatus for short-period semi-persistent scheduling, comprising:
the system comprises a determining module, a scheduling module and a scheduling module, wherein the determining module is used for determining User Equipment (UE) which is currently configured to be short-period semi-persistent scheduling (S-SPS), and acquiring an S-SPS period and an S-SPS resource block which are allocated to the UE which is configured to be S-SPS;
the allocation module is used for determining the S-SPS period of the UE to be configured according to the S-SPS period and the S-SPS resource block which are allocated to the UE which is configured to be the S-SPS, wherein the UE to be configured is the UE supporting the S-SPS; and allocating S-SPS resource blocks to the UE to be configured according to the S-SPS period of the UE to be configured.
9. The apparatus according to claim 8, wherein the allocating module is specifically configured to determine the S-SPS period of the UE to be configured as a shortest period when the S-SPS resource block allocated to the UE configured as S-SPS is zero, where the shortest period is the shortest one of two or more set period durations arranged in an increasing order; when the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS are not zero, determining whether unallocated S-SPS resource blocks exist according to the S-SPS period and S-SPS resource blocks allocated to the UE which is configured to be S-SPS; and if the unallocated S-SPS resource block is determined to exist, determining the S-SPS period of the UE to be configured according to the period corresponding to the unallocated S-SPS resource block.
10. The apparatus of claim 9, wherein the allocating module is further configured to determine whether the number of UEs configured as S-SPS is less than a configurable total number of UEs capable of S-SPS corresponding to a longest one of the S-SPS periods allocated to the UEs configured as S-SPS if it is determined that the unallocated S-SPS resource block does not exist; if the number of the UEs configured as S-SPS is less than the configurable total number, determining the shortest one of the S-SPS periods allocated to the UEs configured as S-SPS, determining the next period duration of which the period durations of the more than two periods are equal to the period duration of the shortest one as the S-SPS period of the UE to be configured, and reconfiguring the S-SPS period of the UE corresponding to the shortest one into the next period duration; if the number of the UEs configured with S-SPS is equal to the configurable total number, determining the next cycle duration which is equal to the cycle duration of the S-SPS cycles allocated to the UEs configured with S-SPS in the more than two cycle durations as the S-SPS cycles of the UEs to be configured, and reconfiguring the S-SPS cycles allocated to one or more of the UEs configured with S-SPS as the next cycle duration;
and the next period duration is the period of the next duration adjacent to the current period.
11. The apparatus according to any of claims 8 to 10, wherein the allocating module is specifically configured to determine the scheduling time of the UE to be configured according to the S-SPS period of the UE to be configured; and allocating the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks which are not allocated at the scheduling time.
12. The apparatus of claim 11, wherein the allocating module is further configured to, if there are no unallocated S-SPS resource blocks at the scheduling time, perform MU-MIMO pairing on the UE to be configured and other UEs, allocate the S-SPS resource blocks to the UE to be configured from the S-SPS resource blocks allocated to the other UEs at the scheduling time, and the other UEs are UEs of the UEs configured to be S-SPS resource blocks allocated at the scheduling time.
13. The apparatus of claim 11, wherein the allocating module is further configured to allocate a Modulation and Coding Scheme (MCS) to the UE to be configured.
14. The apparatus of any of claims 8-10, 12-13, further comprising:
and the deactivation module is used for deactivating the UE to be configured and carrying out dynamic scheduling if the cache data volume of the UE to be configured is greater than or equal to a set threshold value.
15. A base station apparatus, comprising:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method for resource configuration for short-period semi-persistent scheduling of any of claims 1-7.
16. A computer-readable storage medium storing instructions for performing the method for resource allocation for short-period semi-persistent scheduling of any one of claims 1-7 when the instructions are executed on a computer.
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