CN108243505B - Resource scheduling method and device - Google Patents
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- CN108243505B CN108243505B CN201611221432.0A CN201611221432A CN108243505B CN 108243505 B CN108243505 B CN 108243505B CN 201611221432 A CN201611221432 A CN 201611221432A CN 108243505 B CN108243505 B CN 108243505B
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Abstract
The invention provides a resource scheduling method and a device, wherein the method comprises the following steps: after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station; and when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement. The invention realizes the resource scheduling in the cell and among the cells according to the resource utilization condition of the service cell and the uplink and downlink time slot ratio of the adjacent cell, solves the resource bottleneck restriction caused by the insufficient uplink resource of the TDD system, realizes the maximization of the wireless resource utilization rate of the base station and meets the business resource differentiation requirement of the UE to the greatest extent.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a resource scheduling method and apparatus.
Background
In a wireless communication system, since Users (UEs) share limited channel resources, the scheduling policy of the system for the resources will determine the usage awareness of the Users (UEs) for the resources and the system. Resource scheduling for wireless communication systems must be efficient, fair, and differentiated. The method is high in efficiency, is reflected in high speed of a communication system, and needs quick scheduling response; fairness, which is to avoid the system being monopolized by some specific Users (UE) and affecting the access and use of other Users (UE); differentiation is that the system should meet the resource demand difference of various services.
The conventional resource scheduling method includes the invention patent of resource scheduling method, device and system (patent number: CN201110143789.2) and the invention patent of resource scheduling method and device of TD-LTE system (patent number: CN 201110023897.6). The invention provides a resource scheduling method, device and system (patent number: CN201110143789.2) relating to an LTE network, and solves the problem of system performance reduction caused by SINR fluctuation under non-full load. The method comprises the following steps: the base station in a non-full load state schedules the UE accessed to the base station, allocates resources for the UE and allocates a scheduling timer for the UE; the scheduling timer times according to a preset resource reservation period, wherein the length of the resource reservation period is greater than TTI; and after the scheduling timer expires, releasing the resources allocated to the UE by the base station. The technical scheme provided by the invention is suitable for an LTE system, and the resource use condition is unchanged in a resource reservation period which is longer relative to the time used for scheduling. The invention patent of a resource scheduling method and a device of a TD-LTE system (patent number: CN201110023897.6) provides a resource scheduling method of the TD-LTE system, which comprises the following steps: setting corresponding priority revision weights aiming at different users and/or services, wherein the priority revision weights are determined according to available control region resource information in a subframe and control region resource information required by different users and/or services; wherein, the control area performs resource allocation according to the maximum symbol number; acquiring priority original values corresponding to different users and/or services, and adjusting the corresponding priority original values into priority update values by using the priority revision weight; and scheduling the user and/or the service according to the priority updating value in the current subframe. The invention can fully schedule data resources and improve the resource utilization rate of the system.
The resource scheduling method has the following disadvantages: the resource scheduling method, device and system provided by the invention patent of resource scheduling method, device and system (patent number: CN201110143789.2) only sets a resource reservation mechanism aiming at the accessed UE, and does not differentiate resource reservation aiming at the service characteristics of the UE; in the technical scheme of the invention, the same resource reservation period is adopted for the UE, and during the resource reservation period, the wireless resources cannot be used for other UE, so that the resource scheduling efficiency of the system is reduced. The resource scheduling method provided by the invention patent of resource scheduling method and device of TD-LTE system (patent number: CN201110023897.6) divides priority aiming at differentiation of users and services, forms differentiation on resource scheduling, easily forms the condition that users with high priority are frequently scheduled and users with low priority are difficult to be scheduled when system load is higher, and loses scheduling fairness. The method determines a resource scheduling mechanism according to resource information of a control region of a current subframe, and in a TDD system, when uplink resources are easy to be tense due to different uplink and downlink time slot ratio settings, a user with low priority sends no channel in uplink acknowledgement (ACK/NACK), so that uplink overtime is caused, and the possibility of service disconnection is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a resource scheduling method and a resource scheduling device, which can solve the problems that the scheduling efficiency is not high, the scheduling differentiation is not formed for different users, and the service drop is caused by that part of users are not scheduled due to insufficient uplink resources in the prior art.
In a first aspect, the present invention provides a resource scheduling method, where the method includes:
after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station;
when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement;
the uplink resource cell is a neighboring cell in which an uplink time slot is more than a downlink time slot configuration and a difference value between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell in which a downlink time slot is more than the uplink time slot configuration and a difference value between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer resource cell is a neighboring cell in which a difference value between the uplink time slot configuration and the downlink time slot configuration is less than a preset threshold.
Optionally, after the base station determines resource requirements of an uplink service and a downlink service according to the buffer status report BSR reported by the UE and the buffer information of the base station, the method further includes:
and when the resource of the serving cell of the UE can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE so as to distribute the cell resource of the serving cell to the UE.
Optionally, the determining, by the base station, the uplink and/or downlink channel resource requirement according to the buffer status report BSR reported by the UE and the buffer information of the base station includes:
the base station determines an uplink cache byte according to the BSR reported by the UE and determines a downlink cache byte according to the cache information of the base station;
when the uplink cache byte and/or the downlink cache byte are/is larger than a preset upper cache limit, the base station triggers channel increase adjustment;
and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, the base station triggers channel reduction adjustment.
Optionally, when the serving cell of the UE can meet the channel resource requirement, the sending, by the base station, an RRC reconfiguration message to the UE to allocate the cell resource of the serving cell to the UE includes:
When the base station triggers the channel reduction adjustment, the base station sends an RRC reconfiguration message to the UE so as to complete the channel reduction adjustment of the UE;
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
Optionally, the base station, according to the uplink and/or downlink channel resource requirement, switches the UE to an uplink resource cell, a downlink resource cell, or a peer-to-peer resource cell, including:
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event;
if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event;
If the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
In a second aspect, the present invention provides an apparatus for scheduling resources, the apparatus comprising:
a resource requirement determining unit, configured to determine, after a terminal UE or a base station initiates a service request, an uplink and/or downlink channel resource requirement according to a buffer status report BSR reported by the UE and buffer information of the base station;
a cell switching unit, configured to switch the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell according to the uplink and/or downlink channel resource requirements when the resource of the serving cell of the UE cannot meet the channel resource requirements;
the uplink resource cell is a neighboring cell in which an uplink time slot is more than a downlink time slot configuration and a difference value between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell in which a downlink time slot is more than the uplink time slot configuration and a difference value between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer resource cell is a neighboring cell in which a difference value between the uplink time slot configuration and the downlink time slot configuration is less than a preset threshold.
Optionally, the apparatus further comprises: a resource allocation unit to:
and when the resource of the serving cell of the UE can meet the channel resource requirement, sending an RRC reconfiguration message to the UE so as to allocate the cell resource of the serving cell to the UE.
Optionally, the resource requirement determining unit is specifically configured to:
determining uplink buffer bytes according to BSR reported by UE, and determining downlink buffer bytes according to buffer information of the base station;
when the uplink cache byte and/or the downlink cache byte are/is larger than a preset upper cache limit, triggering channel increase adjustment;
and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, triggering channel reduction adjustment.
Optionally, the resource allocation unit is specifically configured to:
when the base station triggers the channel reduction adjustment, sending an RRC reconfiguration message to the UE to complete the channel reduction adjustment of the UE;
and when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, sending an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
Optionally, the cell switching unit is specifically configured to:
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event;
if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event;
if the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
According to the technical scheme, the invention provides a resource scheduling method and device, wherein the uplink and/or downlink channel resource requirements of a service are determined according to data cache status reports of UE and a base station, and when the resource of a service cell of the UE cannot meet the channel resource requirements, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirements. Therefore, the invention combines the characteristic of inconsistent uplink and downlink resource configuration of the TDD system, realizes the resource scheduling in the cell and between the cells according to the resource utilization condition of the service cell and the uplink and downlink time slot ratio of the adjacent cell, solves the resource bottleneck restriction caused by insufficient uplink resources of the TDD system, realizes the maximization of the wireless resource utilization rate of the base station and meets the service resource differentiation requirement of the UE to the greatest extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart illustrating a resource scheduling method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a resource scheduling method according to another embodiment of the present invention;
fig. 3 is a diagram illustrating a BSR message format according to another embodiment of the present invention;
fig. 4 is a signaling diagram of RRC connection reconfiguration complete resource adjustment in a cell according to another embodiment of the present invention;
fig. 5 is a signaling diagram of RRC connection reconfiguration failure according to another embodiment of the present invention;
fig. 6 is a signaling diagram of an event triggering a5 to complete the inter-cell resource adjustment according to another embodiment of the present invention;
fig. 7 is a flowchart illustrating a resource scheduling method according to another embodiment of the present invention;
fig. 8 is a schematic structural diagram of a resource scheduling apparatus according to an embodiment of the present invention;
Fig. 9 is a schematic structural diagram of a resource scheduling apparatus according to another embodiment of the present invention;
fig. 10 is a block diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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 invention.
Fig. 1 is a schematic flowchart of a resource scheduling method in an embodiment of the present invention, and as shown in fig. 1, an execution subject of the embodiment is a base station, where the method includes the following steps:
s1: after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station.
According to the description of 3GPP TS 36.3216.1.3 section, a Buffer Status Report (BSR) message indicates the Size of data to be sent in the current MAC layer, where the Size of the MAC Buffer carries 6 bits for a logical Channel Group (LCG, logical Channel Group) (Buffer Size, which is an index that identifies 64 values in total).
Specifically, after a Radio Resource Control (RRC) connection is established, and a UE or a base station initiates a service request, the UE reports a BSR to the base station, and the base station determines an uplink channel Resource requirement (a channel Resource required to be transmitted from the UE to the base station) according to the BSR reported by the UE, and determines a downlink channel Resource requirement (a channel Resource required to be transmitted from the base station to the UE) according to buffer information of the base station itself, thereby determining the uplink and downlink service Resource requirements.
S2: and when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement.
The uplink resource cell is a neighboring cell in which an uplink time slot is more than a downlink time slot configuration and a difference value between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell in which a downlink time slot is more than the uplink time slot configuration and a difference value between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer resource cell is a neighboring cell in which a difference value between the uplink time slot configuration and the downlink time slot configuration is less than a preset threshold.
Specifically, when the resource of the serving cell of the UE cannot meet the channel resource requirement, the base station switches the UE to the corresponding neighboring cell according to the uplink and/or downlink channel resource requirement: specifically, when the current service is an upload-oriented service, such as sending a WeChat friend ring, sending a mail with an attachment, and the like, the UE is allocated to an uplink resource cell with an uplink timeslot oriented in a sharing manner by the cell; when the service is mainly downloaded, such as downloading, online video and the like, the UE is allocated to a downlink resource cell with a main downlink time slot by a cell conforming to a sharing mode; when the service is an uploading and downloading peer-to-peer service, such as a VoLTE voice call, a video call and the like, the UE is allocated to a peer-to-peer resource cell with an uplink time slot and a downlink time slot in a cell load sharing mode.
Therefore, in this embodiment, the scheduling method is based on a "resource pool," which means that, in addition to scheduling resources of a serving cell, an algorithm also brings neighboring cells into a resource scheduling range.
Therefore, before the step S1, the following three types of neighbor cells and measurement thresholds need to be configured for the serving cell:
1) A downlink resource cell: the LTE TDD cell has more downlink time slots than cells configured with uplink time slots and is suitable for the UE mainly having downlink services to reside; the A5_ DL threshold may be configured and the UE switches to the neighbor cell when it meets this A5 threshold. For example, when the downlink channel resource requirement of the UE reaches the a5_ DL threshold, the UE is switched to the neighboring cell.
2) An uplink resource cell: the LTE TDD cell is suitable for the UE mainly with uplink service to reside in a cell with more uplink time slots than downlink time slots; configuring an A5_ UL threshold, and switching to the adjacent cell when the UE meets the A5 threshold. For example, when the uplink channel resource requirement of the UE reaches the a5_ UL threshold, the UE switches to the neighboring cell.
3) Peer-to-peer resource cell: configuring cells with small difference in uplink and downlink time slots of an LTE TDD cell, and being suitable for UE residence of uplink and downlink countermeasure services; configuring an A5_ BL threshold, and switching to the adjacent cell when the UE meets the A5 threshold. For example, when the uplink and downlink channel resource requirement of the UE reaches the a5_ BL threshold, the UE is switched to the neighboring cell.
In this embodiment, the type of the neighboring cell is determined by the uplink timeslot ratio of the cell. According to the description of 3GPP TS36.2114.2 section, the method for dividing the ratio of uplink time slot to downlink time slot of the LTE TDD system is provided, wherein the uplink resource cell with the time slot ratio of 0 is appointed; 1. 6 are all peer-to-peer resource cells; 2. 3, 4 and 5 are all downlink resource cells. The cell type index table is shown in table 1.
Table 1: adjacent region type division and time slot ratio corresponding table
Wherein D represents an uplink time slot, U represents a downlink time slot, and S represents a conversion time slot. Then, as can be seen from table 1, the uplink timeslot of the uplink resource cell is more than the downlink timeslot, and the difference between the number of the uplink timeslot and the number of the downlink timeslot is greater than or equal to 3, for example, the number of the uplink timeslots of the uplink resource cell with timeslot ratio of 0 is 6, and the number of the downlink timeslots is 2; the downlink time slots of the downlink resource cells are more than the uplink time slots, and the difference between the number of the downlink time slots and the number of the uplink time slots is more than or equal to 3, for example, the number of the downlink time slots of the downlink resource cells with the time slot ratio of 2 is 6, the number of the uplink time slots of the downlink resource cells with the time slot ratio of 3 is 3, the number of the downlink time slots of the downlink resource cells with the time slot ratio of 4 is 7, the number of the uplink time slots of the downlink resource cells with the time slot ratio of 4 is 2, the number of the downlink time slots of the downlink resource cells with the time slot ratio of 5 is 8, and the number of the uplink time slots of the downlink resource cells with the time slot ratio of 5 is 1; the difference between the uplink time slot and the downlink time slot of the peer-to-peer resource cell is not large, the difference between the number of the uplink time slot and the downlink time slot of the peer-to-peer resource cell is less than 3, for example, the number of the uplink time slot and the downlink time slot of the peer-to-peer resource cell with the time slot ratio of 1 is equal, while the number of the uplink time slot and the downlink time slot of the peer-to-peer resource cell with the time slot ratio of 6 is 5, the number of the downlink time slot is 3, and the difference between the number of the uplink time slot and the number of the downlink time slot is 2, that is, the difference between the number of the uplink time slot and the number of the downlink time slot is not large.
Therefore, in this embodiment, a service uplink and/or downlink channel resource requirement is determined according to a data buffer status report of a UE and a base station, and when a resource of a serving cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell according to the uplink and/or downlink channel resource requirement. Therefore, according to the service characteristics of the UE, the embodiment determines the requirement for the resource in real time, and schedules the UE to the appropriate cell in the RRC reconfiguration manner, so as to achieve fast and efficient scheduling of the resource, differentiated scheduling based on the service requirement, and maximize utilization of the network resource and maximize the user perception requirement.
In an alternative embodiment of the present invention, as shown in fig. 2, after the step S1, the method further includes the following steps:
s3: and when the resource of the serving cell of the UE can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE so as to distribute the cell resource of the serving cell to the UE.
Specifically, when the resources of the serving cell can meet the uplink and/or downlink channel resource requirements determined in step S1, the channel resource adjustment can be completed in the serving cell through the RRC reconfiguration process, so as to allocate the resources in the serving cell to the UE.
Therefore, in the embodiment, according to the service characteristics of the UE, the requirement for the resource is determined in real time, and the UE is scheduled to a suitable cell (serving cell or neighboring cell) in a RRC reconfiguration manner, so that fast and efficient scheduling of the resource and differentiated scheduling based on the service requirement are realized, and maximization of utilization of network resources and maximization of user perception requirement satisfaction are realized.
The resource scheduling method in the above embodiment is divided into two processes: a resource requirement calculation process and a resource adjustment process. The following detailed description is made with respect to two procedures:
in an optional embodiment of the present invention, the step S1 may specifically include the following sub-steps:
s11: and the base station determines an uplink buffer byte according to the BSR reported by the UE and determines a downlink buffer byte according to the buffer information of the base station.
S12: and when the uplink cache bytes and/or the downlink cache bytes are larger than a preset upper cache limit, the base station triggers the channel to increase and adjust.
S13: and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, the base station triggers channel reduction adjustment.
Specifically, as shown in fig. 3, the number of bytes Buffer _ MAC _ xL of the MAC Buffer is calculated according to the Buffer Size index of the BSR message. The BSR reported by the UE identifies the uplink BUFFER byte BUFFER _ MAC _ UL, and the BSR of the base station identifies the downlink BUFFER byte BUFFER _ MAC _ UL.
Accordingly, when the uplink and/or downlink BUFFER exceeds the upper limit, i.e. BUFFER _ MAC _ xL > BUFFER _ MAC _ MAX _ xL, then a CHANNEL increase adjustment (CHANNEL _ ADD procedure) is triggered; when the uplink and/or downlink BUFFER is below the limit, i.e. BUFFER _ MAC _ xL < BUFFER _ MAC _ MIN _ xL, then a CHANNEL reduction adjustment (CHANNEL _ DEC procedure) is triggered.
Further, in an optional embodiment of the present invention, the step S3 specifically includes:
s31: and when the base station triggers the channel reduction adjustment, the base station sends an RRC reconfiguration message to the UE so as to complete the channel reduction adjustment of the UE.
Specifically, the adjustment of the channel resource reduction is completed in the serving cell through the RRC Reconfiguration process, and the specific signaling interaction is as shown in fig. 4 and fig. 5, and the base station issues an RRC Reconfiguration message (RRC Connection Reconfiguration) to complete the adjustment of the channel reduction in the cell:
i) the base station sends down an RRC Connection Reconfiguration message (RRC Connection Reconfiguration) to complete the channel Reconfiguration of the UE;
ii) after receiving the Reconfiguration reduction command, if the channel adjustment is successfully completed, the UE replies to an RRC Connection Reconfiguration Complete message (RRC Connection Reconfiguration Complete), as shown in fig. 4.
iii) if the UE channel adjustment fails, completing link repair through RRC reestablishment, and replying an RRC Connection Re-establishment message (RRC Connection Re-estableshmen) message, as shown in fig. 5.
S32: when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
Specifically, the attempt to increase the CHANNEL resource is performed preferentially in the serving cell, and if the resources of the serving cell can satisfy the adjustment to increase the CHANNEL resource, the increase procedure is completed by RRC reconfiguration in the same manner as the adjustment to decrease (CHANNEL _ DEC) in step S31.
It can be seen that the resource of the serving cell of the UE can satisfy the channel resource requirement in two cases: when a channel reduction adjustment is triggered, the resources of the serving cell must be able to meet the channel resource requirements; when triggering channel increase adjustment, the preferential attempt is completed within the serving cell, and the resources of the serving cell may be able to meet the channel resource requirements.
Further, if the uplink and/or downlink resources of the cell are insufficient, triggering resource allocation adjustment between the cells, where the step S2 specifically includes:
s21: when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event.
Specifically, when the uplink physical resource block PRB utilization of the serving cell is greater than a preset first utilization threshold and the downlink PRB utilization is greater than a preset second utilization threshold, it indicates that neither uplink nor downlink resources of the serving cell can meet channel resource requirements, and the UE needs to be switched to the peer resource cell.
S22: if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event.
Specifically, when the uplink PRB utilization is greater than the first utilization threshold and the downlink PRB utilization is less than or equal to the second utilization threshold, it indicates that the uplink resources of the serving cell cannot meet the channel resource requirement, and the UE needs to be switched to the uplink resource cell.
S22: if the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
Specifically, when the downlink PRB utilization is greater than the second utilization threshold and the uplink PRB utilization is less than or equal to the first utilization threshold, it indicates that the downlink resources of the serving cell cannot meet the channel resource requirement, and the UE needs to be switched to the downlink resource cell.
Specifically, fig. 6 is a signaling diagram of an inter-cell resource scheduling process in this embodiment, and as shown in fig. 6, the inter-cell resource scheduling process specifically includes the following steps:
(1) if "serving cell uplink PRB utilization ratio > prbutillimit ul (preset first utilization ratio threshold)" or "downlink PRB utilization ratio > prbutillimit dl (preset second utilization ratio threshold)", the base station configures a5 measurement control message to the UE through an RRC Connection Reconfiguration (RRC Connection Configuration Reconfiguration) message, which specifically includes three cases:
i) and if the uplink PRB utilization rate of the serving cell is greater than PRBUTIlLimitUL and the downlink PRB utilization rate is greater than PRBUTIlLimitDL, issuing an A5_ BL measurement control message (a first A5 measurement control message) and trying to switch to the peer-to-peer resource cell.
ii) if the uplink PRB utilization rate of the serving cell is greater than PRBUtilLimitUL and the downlink PRB utilization rate is less than or equal to PRBUtilLimitITDL, issuing an A5_ UL measurement control message (a second A5 measurement control message), and attempting to switch to the uplink resource cell.
iii) if the 'serving cell downlink PRB utilization rate > PRBUTIlLimitITDL' and the 'uplink PRB utilization rate > PRBUTIlLimitITUL', issuing an A5_ DL measurement control message (a third A5 measurement control message), and attempting to switch to the downlink resource cell.
(2) After receiving the measurement control message, the UE replies to an RRC Connection Reconfiguration Complete message (RRC Connection Reconfiguration Complete) and starts a5 measurement.
(3) After the UE completes the neighbor Cell Measurement, a Measurement Report (Measurement Report) is reported to Report a suitable neighbor Cell carrier frequency point (earfcn) and a physical Cell identity (physical Cell Id), and a corresponding Reference Signal Received Power (RSRP) and Reference Signal Received Quality (RSRQ) to the base station.
(4) The base station determines the assigned neighbor cell according to the measurement report reported by the UE, and completes the handover command issuing through an RRC Connection Reconfiguration (RRC Connection Reconfiguration) message.
(5) After the UE completes the handover operation, it reports an RRC Connection Reconfiguration Complete message (RRC Connection Reconfiguration Complete).
Fig. 7 is a schematic flowchart of a resource scheduling method in another embodiment of the present invention, and as shown in fig. 7, the method specifically includes the following steps:
S701: feeding back the uplink and downlink service cache state through BSR information;
specifically, the BSR message includes a BSR message reported by the UE and BSR buffer information of the base station itself.
S702: the base station calculates the resource requirements of uplink and downlink channels of the UE;
s703: judging whether the current service cell can meet the channel resource requirement of the UE, if so, turning to a step S704, otherwise, turning to a step S705;
s704: the base station sends RRC connection reconfiguration information to the UE so as to distribute resources of a serving cell to the UE;
s705: judging whether the uplink PRB utilization rate of the service cell is greater than PRBUtilLimitUL and the downlink PRB utilization rate is greater than PRBUtilLimitDL, if so, turning to a step S706, otherwise, turning to the step S708;
s706: the base station sends A5_ BL measurement control information to the UE;
s707: the UE is switched to the peer-to-peer resource cell by triggering an A5 event;
s708: judging whether the downlink PRB utilization rate of the service cell is greater than PRBUtilLimitDL, if so, turning to the step S709, otherwise, turning to the step S711;
s709: the base station sends down A5_ DL measurement control information to the UE;
s710: the UE triggers A5 time to switch to a downlink resource cell;
s711: judging whether the uplink PRB utilization rate of the service cell is greater than PRBUtilLimit UL, if so, turning to the step S712, otherwise, ending the resource scheduling process;
S712: the base station sends down A5_ UL measurement control information to the UE;
s713: the UE triggers a5 time to switch to the uplink resource cell.
The cross-cell resource scheduling method in the embodiment solves the resource bottleneck of the TDD system caused by insufficient uplink resources. With the popularization of VOLTE high-definition video service, the requirement of uploading pictures and videos by clients is increased, and the uplink resource of an LTE TDD system is insufficient, which is a difficult problem troubling mobile communication. In the embodiment, the cell is divided into an uplink resource cell, a downlink resource cell and a peer-to-peer resource cell according to functions, and is respectively used for bearing the uplink, the download, the uplink and the downlink peer-to-peer services, so that the flexible scheduling of the services is realized, and the bottleneck of insufficient uplink resources can be solved by adopting diversified uplink and downlink time slot ratios; in addition, the real-time scheduling strategy based on the service resource demand of the embodiment judges the resource demand in real time according to the service carried out by the user, can complete the matching of the user resource demand with the fastest scheduling response time, meet the service demand at the fastest speed, realize the optimal perception experience of the user and realize the rapidness and differentiation of scheduling; the scheduling strategy of this embodiment considers the resources of the serving cell and the neighboring cell in a unified manner, integrates multidimensional factors such as service requirements, resource requirements, cell loads, and the like, realizes resource scheduling between cells and within cells, realizes maximization of resource utilization of the LTE TDD system, effectively saves station capacity expansion investment, and is an efficient resource scheduling method.
Fig. 8 is a schematic structural diagram of a resource scheduling apparatus in an embodiment of the present invention, and as shown in fig. 8, the apparatus includes: resource requirement determining section 801 and cell switching section 802. Wherein:
the resource requirement determining unit 801 is configured to determine, after a terminal UE or a base station initiates a service request, an uplink and/or downlink channel resource requirement according to a buffer status report BSR reported by the UE and buffer information of the base station; the cell switching unit 802 is configured to switch the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell according to the uplink and/or downlink channel resource requirements when the resource of the serving cell of the UE cannot meet the channel resource requirements; the uplink resource cell is a neighboring cell in which an uplink time slot is more than a downlink time slot configuration and a difference value between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell in which a downlink time slot is more than the uplink time slot configuration and a difference value between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer resource cell is a neighboring cell in which a difference value between the uplink time slot configuration and the downlink time slot configuration is less than a preset threshold.
In this embodiment, the resource requirement determining unit 801 determines the channel resource requirements of the service uplink and/or downlink according to the data buffer status reports of the UE and the base station, and the cell switching unit 802 switches the UE to the uplink resource cell, the downlink resource cell, or the peer-to-peer resource cell according to the channel resource requirements of the uplink and/or downlink when the resource of the serving cell of the UE cannot meet the channel resource requirements. Therefore, according to the service characteristics of the UE, the embodiment determines the requirement for the resource in real time, and schedules the UE to the appropriate cell in the RRC reconfiguration manner, so as to achieve fast and efficient scheduling of the resource, differentiated scheduling based on the service requirement, and maximize utilization of the network resource and maximize the user perception requirement.
In an alternative embodiment of the present invention, as shown in fig. 9, the apparatus further comprises: a resource allocation unit 803, configured to:
and when the resource of the serving cell of the UE can meet the channel resource requirement, sending an RRC reconfiguration message to the UE so as to allocate the cell resource of the serving cell to the UE.
In an optional embodiment of the present invention, the resource requirement determining unit 801 is specifically configured to:
determining uplink buffer bytes according to BSR reported by UE, and determining downlink buffer bytes according to buffer information of the base station;
when the uplink cache byte and/or the downlink cache byte are/is larger than a preset upper cache limit, triggering channel increase adjustment;
and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, triggering channel reduction adjustment.
In an optional embodiment of the present invention, the resource allocating unit 803 is specifically configured to:
when the base station triggers the channel reduction adjustment, sending an RRC reconfiguration message to the UE to complete the channel reduction adjustment of the UE;
and when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, sending an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
In an optional embodiment of the present invention, the cell switching unit 802 is specifically configured to:
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event;
if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event;
if the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
For the device 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.
Fig. 10 is a block diagram of an electronic device in an embodiment of the present invention.
Referring to fig. 10, the electronic device includes: a processor (processor)1001, a memory (memory)1002, a communication Interface (Communications Interface)1003, and a bus 1004; wherein the content of the first and second substances,
the processor 1001, the memory 1002 and the communication interface 1003 complete mutual communication through the bus 1004;
the communication interface 1003 is used for information transmission between the electronic equipment and the communication equipment of the terminal UE;
the processor 1001 is configured to call the program instructions in the memory 1002 to execute the methods provided by the above-mentioned method embodiments, for example, including: after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station; when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement; the uplink resource cell is a neighboring cell with uplink time slot more than downlink time slot configuration, the downlink resource cell is a neighboring cell with downlink time slot more than uplink time slot configuration, and the peer-to-peer resource cell is a neighboring cell with uplink time slot and downlink time slot configuration equal.
An embodiment of the present invention discloses a computer program product, the computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, which when executed by a computer, enable the computer to perform the methods provided by the above-mentioned method embodiments, for example, including: after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station; when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement; the uplink resource cell is a neighboring cell with uplink time slot more than downlink time slot configuration, the downlink resource cell is a neighboring cell with downlink time slot more than uplink time slot configuration, and the peer-to-peer resource cell is a neighboring cell with uplink time slot and downlink time slot configuration equal.
An embodiment of the present invention discloses a non-transitory computer-readable storage medium, which stores computer instructions, where the computer instructions cause the computer to execute the methods provided by the above method embodiments, for example, the method includes: after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station; when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell according to the uplink and/or downlink channel resource requirement; the uplink resource cell is a neighboring cell with uplink time slot more than downlink time slot configuration, the downlink resource cell is a neighboring cell with downlink time slot more than uplink time slot configuration, and the peer-to-peer resource cell is a neighboring cell with uplink time slot and downlink time slot configuration equal.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the test equipment and the like of the display device are merely illustrative, wherein the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It is further 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will 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 technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for scheduling resources, the method comprising:
after a terminal UE or a base station initiates a service request, the base station determines the uplink and/or downlink channel resource requirements according to a buffer status report BSR reported by the UE and the buffer information of the base station;
when the resource of the service cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell or an equivalent resource cell in a cell load sharing mode according to the uplink and/or downlink channel resource requirement;
the uplink resource cell is a neighboring cell of which the uplink time slot is more than the downlink time slot configuration and the difference between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell of which the downlink time slot is more than the uplink time slot configuration and the difference between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer-to-peer resource cell is a neighboring cell of which the difference between the uplink time slot configuration and the downlink time slot configuration is less than the preset threshold; the preset threshold value is 3;
when the resource of the serving cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell in a cell load sharing manner according to the uplink and/or downlink channel resource requirement, including:
When the service is mainly uploaded, the UE is distributed to an uplink resource cell in a cell load sharing mode; when the service is a downloading-based service, the UE is distributed to a downlink resource cell in a cell load sharing mode; and when the service is an uploading and downloading peer-to-peer service, the UE is distributed to the peer-to-peer resource cell in a cell load sharing mode.
2. The method of claim 1, wherein after the base station determines resource requirements of uplink and downlink services according to the buffer status report BSR reported by the UE and the buffer information of the base station, the method further comprises:
and when the resource of the serving cell of the UE can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE so as to distribute the cell resource of the serving cell to the UE.
3. The method of claim 2, wherein the determining, by the base station, the uplink and/or downlink channel resource requirement according to the buffer status report BSR reported by the UE and the buffer information of the base station comprises:
the base station determines an uplink cache byte according to the BSR reported by the UE and determines a downlink cache byte according to the cache information of the base station;
When the uplink cache byte and/or the downlink cache byte are/is larger than a preset upper cache limit, the base station triggers channel increase adjustment;
and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, the base station triggers channel reduction adjustment.
4. The method of claim 3, wherein the base station sends an RRC reconfiguration message to the UE to allocate the cell resource of the serving cell to the UE when the serving cell of the UE can meet the channel resource requirement, comprising:
when the base station triggers the channel reduction adjustment, the base station sends an RRC reconfiguration message to the UE so as to complete the channel reduction adjustment of the UE;
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, the base station sends an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
5. The method of claim 4, wherein the base station switches the UE to an uplink resource cell, a downlink resource cell, or a peer-to-peer resource cell according to the uplink and/or downlink channel resource requirements, comprising:
When the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event;
if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event;
if the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
6. An apparatus for scheduling resources, the apparatus comprising:
a resource requirement determining unit, configured to determine, after a terminal UE or a base station initiates a service request, an uplink and/or downlink channel resource requirement according to a buffer status report BSR reported by the UE and buffer information of the base station;
A cell switching unit, configured to switch, when resources of a serving cell of the UE cannot meet the channel resource requirement, the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell in a cell load sharing manner according to the uplink and/or downlink channel resource requirement;
the uplink resource cell is a neighboring cell of which the uplink time slot is more than the downlink time slot configuration and the difference between the uplink time slot configuration and the downlink time slot configuration is greater than or equal to a preset threshold, the downlink resource cell is a neighboring cell of which the downlink time slot is more than the uplink time slot configuration and the difference between the downlink time slot configuration and the uplink time slot configuration is greater than or equal to a preset threshold, and the peer-to-peer resource cell is a neighboring cell of which the difference between the uplink time slot configuration and the downlink time slot configuration is less than the preset threshold; the preset threshold value is 3;
when the resource of the serving cell of the UE cannot meet the channel resource requirement, the base station switches the UE to an uplink resource cell, a downlink resource cell, or an equivalent resource cell in a cell load sharing manner according to the uplink and/or downlink channel resource requirement, including:
when the service is mainly uploaded, the UE is distributed to an uplink resource cell in a cell load sharing mode; when the service is a downloading-based service, the UE is distributed to a downlink resource cell in a cell load sharing mode; and when the service is an uploading and downloading peer-to-peer service, the UE is distributed to the peer-to-peer resource cell in a cell load sharing mode.
7. The apparatus of claim 6, further comprising: a resource allocation unit to:
and when the resource of the serving cell of the UE can meet the channel resource requirement, sending an RRC reconfiguration message to the UE so as to allocate the cell resource of the serving cell to the UE.
8. The apparatus according to claim 7, wherein the resource requirement determining unit is specifically configured to:
determining uplink buffer bytes according to BSR reported by UE, and determining downlink buffer bytes according to buffer information of the base station;
when the uplink cache byte and/or the downlink cache byte are/is larger than a preset upper cache limit, triggering channel increase adjustment;
and when the uplink cache bytes and/or the downlink cache bytes are smaller than a preset lower cache limit, triggering channel reduction adjustment.
9. The apparatus of claim 8, wherein the resource allocation unit is specifically configured to:
when the base station triggers the channel reduction adjustment, sending an RRC reconfiguration message to the UE to complete the channel reduction adjustment of the UE;
and when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell can meet the channel resource requirement, sending an RRC reconfiguration message to the UE to complete the channel increase adjustment of the UE.
10. The apparatus of claim 9, wherein the cell switching unit is specifically configured to:
when the base station triggers channel increase adjustment, if the uplink resource and/or the downlink resource of the serving cell cannot meet the channel resource requirement, and the uplink Physical Resource Block (PRB) utilization rate of the serving cell is greater than a preset first utilization rate threshold and the downlink PRB utilization rate is greater than a preset second utilization rate threshold, the base station sends a first A5 measurement control message to the UE, so that the UE is switched to a peer resource cell by triggering an A5 event;
if the uplink PRB utilization rate is greater than the first utilization rate threshold and the downlink PRB utilization rate is less than or equal to the second utilization rate threshold, the base station sends a second A5 measurement control message to the UE, so that the UE is switched to an uplink resource cell by triggering an A5 event;
if the downlink PRB utilization rate is greater than the second utilization rate threshold and the uplink PRB utilization rate is less than or equal to the first utilization rate threshold, the base station sends a third A5 measurement control message to the UE, so that the UE is switched to a downlink resource cell by triggering an A5 event.
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| CN111130668B (en) * | 2018-10-30 | 2022-06-07 | 中国电信股份有限公司 | Method, device and base station for processing uplink service |
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| CN109451589B (en) * | 2018-12-28 | 2022-08-12 | 中国移动通信集团江苏有限公司 | LTE carrier scheduling method, device, equipment and computer storage medium |
| CN112996003B (en) * | 2019-12-12 | 2022-09-13 | 成都鼎桥通信技术有限公司 | Resource scheduling method, device and equipment |
| CN111225335B (en) * | 2020-01-16 | 2021-01-08 | 重庆医药高等专科学校 | Method and system for transmitting child positioning data in real time based on Internet of things |
| CN111918310B (en) * | 2020-08-10 | 2024-04-16 | 河北电信设计咨询有限公司 | Cell networking method with user as center |
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