CN108235400B - Scheduling method and base station - Google Patents
Scheduling method and base station Download PDFInfo
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- CN108235400B CN108235400B CN201611140469.0A CN201611140469A CN108235400B CN 108235400 B CN108235400 B CN 108235400B CN 201611140469 A CN201611140469 A CN 201611140469A CN 108235400 B CN108235400 B CN 108235400B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/541—Allocation or scheduling criteria for wireless resources based on quality criteria using the level of interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
- H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
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Abstract
The embodiment of the invention discloses a scheduling method and a base station. The method comprises the following steps: a base station obtains a first characteristic parameter for measuring and characterizing uplink interference; when the first characteristic parameter is larger than a first threshold value, controlling to be switched from a normal state to an interference avoidance state; monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state; when a scheduling request of a user exists on the first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
Description
Technical Field
The present invention relates to wireless communication technologies, and in particular, to a scheduling method and a base station.
Background
In the call initiation process of the Voice over LTE (VoLTE) based IMS, there is a possibility of call initiation failure due to interference problem. The prior art solution is that, using a silent real function, when a 100trying feedback message for an Invite message is not received by an uplink terminal (MO) more than 6 seconds after the Invite message is sent, or when the MO does not complete the establishment of a qci (qos Class identifier)1 bearer within 6 seconds, an esr (extended Service request) message is sent to trigger a Circuit Switched Fallback (CSFB), and a Circuit Switched (CS) domain call is reinitiated after the esr (extended Service request) message falls to 2G.
Although the silent real function can solve the problem of call initiation failure before QCI 1 special load is established, the time delay of the process is Long, after the MO terminal dials, after 6 seconds of no response time, the process is switched to trigger the CSFB process, and the CSFB process needs 7 seconds, namely, the call initiation can be carried out in the 2G CS domain after about 13 seconds, through the actual measurement of the network of Long Term Evolution (LTE); moreover, the silent real function reduces the call initiation rate of the VoLTE terminal in 4G, and can be realized only by the interaction between the service state of the terminal Application (AP) layer and the IMS call and the network residing state of the Communication Processing (CP) layer.
Disclosure of Invention
In order to solve the existing technical problem, embodiments of the present invention provide a scheduling method and a base station.
In order to achieve the above purpose, the technical solution of the embodiment of the present invention is realized as follows:
the embodiment of the invention provides a scheduling method, which comprises the following steps:
a base station obtains a first characteristic parameter for measuring and characterizing uplink interference;
when the first characteristic parameter is larger than a first threshold value, controlling to be switched from a normal state to an interference avoidance state;
monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state;
when a scheduling request of a user exists on the first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
In the above scheme, the method further comprises: and when the data transmission of the user on a second specific bearer is not monitored, determining the uplink resource of the scheduling request again, and sending the uplink resource to other base stations except the base station so as to enable the other base stations to avoid using the uplink resource.
In the above scheme, the method further comprises: and when the interference avoidance state is achieved and the first characteristic parameter is not larger than the first threshold value, controlling the interference avoidance state to be switched to the normal state.
In the above scheme, when it is monitored that a scheduling request of a user exists on a first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station includes:
when the condition that a scheduling request of a user exists on a first specific bearer is monitored, performing uplink pre-scheduling on the scheduling request, and determining uplink resources of the uplink pre-scheduling; sending the uplink resource to other base stations except the base station within a first preset time range;
scheduling the data of the user on the first specific bearer by using the uplink resource pre-scheduled by the uplink in a second preset time range;
wherein the first specific bearer is a bearer requiring enhancement.
In the foregoing solution, the second specific bearer is a bearer that does not need to be enhanced.
An embodiment of the present invention further provides a base station, where the base station includes: the device comprises an acquisition unit, a control unit, a monitoring unit and a communication unit; wherein the content of the first and second substances,
the acquiring unit is used for acquiring a first characteristic parameter for measuring and characterizing uplink interference;
the control unit is used for controlling the normal state to be switched to the interference avoidance state when the first characteristic parameter obtained by the obtaining unit is larger than a first threshold value;
the monitoring unit is used for monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state; when a scheduling request of a user exists on the first specific bearer, determining uplink resources of the scheduling request;
and the communication unit is used for sending the uplink resource to other base stations except the base station so as to enable the other base stations to avoid using the uplink resource.
In the foregoing solution, the monitoring unit is further configured to monitor whether data transmission of the user exists on a second specific bearer; when the data transmission of the user on a second specific bearer is not monitored, determining the uplink resource of the scheduling request again;
the communication unit is further configured to send the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
In the foregoing solution, the control unit is further configured to control to switch from the interference avoidance state to the normal state when the interference avoidance state is achieved and the first characteristic parameter obtained by the obtaining unit is not greater than the first threshold.
In the above scheme, the monitoring unit is configured to perform uplink pre-scheduling on the scheduling request when it is monitored that the scheduling request of the user exists on the first specific bearer, and determine an uplink resource of the uplink pre-scheduling;
the communication unit is used for sending the uplink resource to other base stations except the base station within a first preset time range; the first specific bearer is used for carrying out uplink resource scheduling on the user data of the first specific bearer by adopting the uplink resource scheduled in advance in a first preset time range; wherein the first specific bearer is a bearer requiring enhancement.
In the foregoing solution, the second specific bearer is a bearer that does not need to be enhanced.
The scheduling method and the base station provided by the embodiment of the invention comprise the following steps: a base station obtains a first characteristic parameter for measuring and characterizing uplink interference; when the first characteristic parameter is larger than a first threshold value, controlling to be switched from a normal state to an interference avoidance state; monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state; when a scheduling request of a user exists on the first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource. By adopting the technical scheme of the embodiment of the invention, before the SRVCC is effectively triggered, the success rate of VoLTE call initiation in a high-interference area is improved on the premise of not increasing extra time delay; and on the other hand, the VoLTE call-starting time delay of a high-interference area is also reduced.
Drawings
Fig. 1 is a schematic view of a call origination process of VoLTE in the prior art;
FIG. 2 is a flowchart illustrating a scheduling method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an application architecture of a scheduling method according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a scheduling method according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic view of a call origination process of VoLTE in the prior art; referring to fig. 1, the origination process of VoLTE includes: step 1, an uplink terminal (MO, Mobile initial) performs random access, and sends an uplink Session Initiation Protocol (SIP) signaling Invite; step 2, after receiving the Invite message, the MO side IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) triggers the MO side EPC to establish qci (qos Class identifier)1 specific bearer, and forwards the Invite message to a Session Border Controller (SBC, Session Border Controller) on the downlink Terminal (MT, Mobile Terminal) side. And step 3, after the Invite is sent to the MT, the MT sends an uplink Session Initiation Protocol (SIP) signaling 183Session Progress to the MO to perform media plane negotiation. When the 183 message is sent to a Session Border Controller (SBC) on the MT side, triggering an core network (EPC) on the MT side to establish QCI 1 private load; step 4, after receiving the 183 message, the MO sends precoding signaling such as PRACK and Update to the MT, and the MT replies a 180Ringing message to the MO and then the MO rings; and 5, the MT is connected, the call establishment process is finished, and the MO and the MT normally perform VoLTE service.
When the MO has not established the QCI 1 bearer in step 1, or the MO has established the QCI 1 bearer but the 183 message has not returned to the MO in steps 2 and 3, handover of dual-mode Single Radio Voice Call Continuity (SRVCC) (for example, SRVCC/bSRVCC/esvcc) cannot be performed. At this time, the MO and the MT satisfy the LTE camping threshold, and there is no problem in downlink signaling transmission, but if the MO or the MT is in a high interference (IoT) region, uplink SIP signaling transmission cannot be performed, and meanwhile, the MO or the MT cannot be switched to a 2G connection, so that a call cannot be successfully initiated.
Based on the above problems, the following embodiments of the present invention are proposed.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example one
The embodiment of the invention provides a scheduling method. FIG. 2 is a flowchart illustrating a scheduling method according to an embodiment of the present invention; as shown in fig. 2, the method includes:
step 201: the base station obtains a first characteristic parameter for characterizing uplink interference.
Step 202: and when the first characteristic parameter is larger than a first threshold value, controlling to be switched from a normal state to an interference avoidance state.
Step 203: and monitoring whether a scheduling request of a user exists on the first specific bearer or not in the interference avoidance state.
Step 204: when a scheduling request of a user exists on the first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
In this embodiment, the first characteristic parameter represents an uplink interference degree; as an embodiment, the first characteristic parameter may specifically be Interference noise (IoT); the base station may obtain the IoT by measuring and calculating the obtained measurement data.
In this embodiment, when the first characteristic parameter is greater than a first threshold, indicating that uplink interference is large and possibly causing a problem of origination failure, controlling to switch from a normal origination state to an interference avoidance state; in the interference avoidance state, a base station monitors whether user scheduling exists on a first specific bearer or not, and if the user scheduling exists, an interference avoidance scheme is executed on a scheduling request of the user; in this embodiment of the present invention, before the first characteristic parameter is greater than the first threshold to trigger switching to the interference avoidance state, the downlink Reference Signal Received Power (RSRP) of the terminal where the user is located needs not to reach a condition for triggering SRVCC, that is, the RSRP of the terminal does not reach the condition for triggering SRVCC when the precondition of the embodiment of the present invention is executed.
In this embodiment, in the interference avoidance state, the base station monitors whether a scheduling request of a user exists on a first specific bearer; wherein the first specific bearer is a bearer that needs to be enhanced, and may be a QCI5 bearer, for example. And when the scheduling request of the user exists on the first specific bearer, determining the uplink resource of the scheduling request of the user. As an implementation manner, when it is monitored that a scheduling request of a user exists on a first specific bearer, an uplink avoidance scheme is executed, that is, an uplink resource of the scheduling request is determined, and the uplink resource is sent to other base stations except the base station, specifically including: when the condition that a scheduling request of a user exists on a first specific bearer is monitored, performing uplink pre-scheduling on the scheduling request, and determining uplink resources of the uplink pre-scheduling; sending the uplink resource to other base stations except the base station within a first preset time range; and scheduling the data of the user on the first specific bearer by using the uplink resources pre-scheduled by the uplink within a second preset time range. The first preset time range may be the same as or different from the second preset time range, and may be specifically configured according to specific situations.
Specifically, fig. 3 is a schematic diagram of an application architecture of a scheduling method according to an embodiment of the present invention; as shown in fig. 3, the base station a performs uplink pre-scheduling for the user having the uplink scheduling request of the QCI5, and determines the position of the uplink Resource Block (RB) for scheduling the user; the base station A informs other adjacent base stations of the uplink RB prescheduled position of the user within N2 milliseconds (ms) through an X2 interface; here, the other neighboring base station may be a base station B; n2ms after the base station A performs uplink pre-scheduling, the user with the uplink scheduling request is loaded on a scheduling QCI5 by adopting the pre-scheduled uplink RB resource, and other notified adjacent base stations (such as the base station B) do not use the RB resource used by the uplink pre-scheduling of the base station A when the user is scheduled by the N2ms, so as to avoid the uplink co-frequency interference of the uplink pre-scheduled RB resource. Among them, N2 is configurable, but N2 may be set within 4ms in consideration of channel time variability.
As an embodiment, the method further comprises: and when the scheduling request of the user does not exist on the first specific bearer, the uplink evasion scheme is not executed, and the normal state is kept.
In this embodiment, when data transmission of the user on a second specific bearer is not monitored, determining an uplink resource of the scheduling request again, and sending the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource; until it is monitored that data transmission of the user exists on the second specific bearer. Wherein the second specific bearer is a bearer that does not require enhancement. The second specific bearer may be, for example, a QCI 1 bearer.
Specifically, when the base station monitors data transmission of the user (the user is specifically the user scheduled on the first specific bearer) on the QCI 1 bearer, it indicates that the QCI 1 bearer of the user is established and data transmission is performed, and then the uplink interference avoidance scheme for the user is closed. In a specific application, a time range for executing the uplink interference avoidance scheme may be preconfigured between the base stations, for example, 1 ms, 2ms, and the like. When a base station monitors that a scheduling request of a user exists on a first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station; the time range in which the other base stations do not allow the uplink resources to be used is the configured time range; after the time of the time range is reached, the other base stations perform scheduling according to their own scheduling principles, and of course, the uplink resources may also be used. Therefore, after the base station monitors that the data transmission of the user exists on the second specific bearer, the other base stations do not need to be notified, and the other base stations can also use the uplink resource. On the other hand, when the base station does not monitor that the data transmission of the user exists on the second specific bearer, the base station continues to use the uplink interference avoidance scheme for the user, determines the uplink resource of the scheduling request again, and sends the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
As an embodiment, the method further comprises: and when the interference avoidance state is in the interference avoidance state and the first characteristic parameter is monitored to be not larger than the first threshold, controlling the interference avoidance state to be switched to the normal state.
In this embodiment, in the interference avoidance state, the base station may monitor whether there is a scheduling request on a first specific bearer (e.g., a QCI5 bearer); when a scheduling request of a user A exists, executing an interference avoidance scheme of the user A, and stopping the interference avoidance of the user A when the situation that the user A has data transmission on a QCI 1 bearer is monitored. However, when it is monitored that the user B has a scheduling request on the first specific bearer (for example, the QCI5 bearer), the interference avoidance scheme of the user B is further executed, which is the same as that of the user a, and is not described herein again. When the base station monitors that the first characteristic parameter is not larger than the first threshold value, the base station directly controls to switch to a normal state, and an interference avoidance scheme is not executed for any user.
FIG. 4 is a schematic flow chart illustrating a scheduling method according to an embodiment of the present invention; the scheduling method according to the embodiment of the present invention can be specifically shown in fig. 4, and includes:
step 31: the base station monitors whether the uplink IoT is greater than a first threshold; the first threshold value can be configured in advance according to the actual situation of the cell; when monitoring that the uplink IoT is greater than the first threshold, indicating that the uplink interference is large and a call initiation failure problem may occur, executing the interference avoidance scheme from step 32 to step 36; and when the monitored uplink IoT is not greater than the first threshold value, indicating that the uplink interference is small, and not executing an interference avoidance scheme.
Step 32: and the base station is switched to an interference avoidance state, the user scheduling on the QCI5 bearer is monitored in the interference avoidance state, and the user of the scheduling request existing on the QCI5 bearer is determined.
Step 33: after determining a user existing on a QCI5 bearer, a base station determines uplink resources of a scheduling request of the user; specifically, the position of the uplink RB resource block of the user is determined.
Step 34: and the base station sends the determined position of the uplink RB resource block of the user to other adjacent base stations in N2ms, so that the other adjacent base stations cannot use the position of the uplink RB resource block on the QCI5 bearer, the problem that the user uses the uplink RB resource block is avoided, scheduling is carried out, and uplink co-frequency interference is avoided.
Step 35: monitoring whether the user has data transmission on the QCI 1 bearer; when the user has data transmission on the QCI 1 bearer, indicating that the QCI 1 bearer of the user is established and data transmission is performed, executing step 36: closing an uplink interference avoidance scheme of the user; and when the user does not transmit data on the QCI 1 bearer, indicating that the QCI 1 bearer of the user is not established, re-executing the processes from the step 33 to the step 35 based on executing the interference avoidance scheme of the user.
By adopting the technical scheme of the embodiment of the invention, before the SRVCC is effectively triggered, the success rate of VoLTE call initiation in a high-interference area is improved on the premise of not increasing extra time delay; and on the other hand, the VoLTE call-starting time delay of a high-interference area is also reduced.
Example two
The embodiment of the invention also provides a base station. Fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention; as shown in fig. 5, the base station includes: an acquisition unit 41, a control unit 42, a monitoring unit 43, and a communication unit 44; wherein the content of the first and second substances,
the obtaining unit 41 is configured to obtain a first characteristic parameter for measuring and characterizing uplink interference;
the control unit 42 is configured to control to switch from a normal state to an interference avoidance state when the first characteristic parameter obtained by the obtaining unit 41 is greater than a first threshold;
the monitoring unit 43 is configured to monitor whether a scheduling request of a user exists on a first specific bearer in the interference avoidance state; when a scheduling request of a user exists on the first specific bearer, determining uplink resources of the scheduling request;
the communication unit 44 is configured to send the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
In this embodiment, the first characteristic parameter represents an uplink interference degree; as an embodiment, the first characteristic parameter may specifically be IoT; the base station may obtain the IoT by measuring and calculating the obtained measurement data.
In this embodiment, when the first characteristic parameter is greater than the first threshold, indicating that the uplink interference is large and may cause a problem of call initiation failure, the control unit 42 controls the normal call initiation state to be switched to the interference avoidance state; in the interference avoidance state, the monitoring unit 43 monitors whether there is user scheduling on the first specific bearer, and if there is user scheduling, executes an interference avoidance scheme on a scheduling request of the user; in this embodiment of the present invention, before the first characteristic parameter is greater than the first threshold to trigger switching to the interference avoidance state, the downlink Reference Signal Received Power (RSRP) of the terminal where the user is located needs not to reach a condition for triggering SRVCC, that is, the RSRP of the terminal does not reach the condition for triggering SRVCC when the precondition of the embodiment of the present invention is executed.
In this embodiment, in the interference avoidance state, the monitoring unit 43 monitors whether a scheduling request of a user exists on a first specific bearer; wherein the first specific bearer is a bearer that needs to be enhanced, and may be a QCI5 bearer, for example. And when the scheduling request of the user exists on the first specific bearer, determining the uplink resource of the scheduling request of the user.
As an implementation manner, the monitoring unit 43 is configured to perform uplink pre-scheduling on a scheduling request when it is monitored that the scheduling request of a user exists on a first specific bearer, and determine an uplink resource of the uplink pre-scheduling;
the communication unit 44 is configured to send the uplink resource to other base stations except the base station within a first preset time range; the first specific bearer is used for carrying out uplink resource scheduling on the user data of the first specific bearer by adopting the uplink resource scheduled in advance in a first preset time range; wherein the first specific bearer is a QCI5 bearer.
Specifically, as shown in fig. 3, the base station a performs uplink pre-scheduling for a user having an uplink scheduling request in the QCI5, and determines a position of an uplink Resource Block (RB) for scheduling the user; the base station A informs other adjacent base stations of the uplink RB prescheduled position of the user within N2 milliseconds (ms) through an X2 interface; here, the other neighboring base station may be a base station B; n2ms after the base station A performs uplink pre-scheduling, the user with the uplink scheduling request is loaded on a scheduling QCI5 by adopting the pre-scheduled uplink RB resource, and other notified adjacent base stations (such as the base station B) do not use the RB resource used by the uplink pre-scheduling of the base station A when the user is scheduled by the N2ms, so as to avoid the uplink co-frequency interference of the uplink pre-scheduled RB resource. Among them, N2 is configurable, but N2 may be set within 4ms in consideration of channel time variability.
Correspondingly, when there is no scheduling request of the user on the first specific bearer, the monitoring unit 43 does not execute the uplink avoidance scheme, and keeps a normal state.
In this embodiment, the monitoring unit 43 is further configured to monitor whether data transmission of the user exists on a second specific bearer; when the data transmission of the user on a second specific bearer is not monitored, determining the uplink resource of the scheduling request again; until it is monitored that data transmission of the user exists on the second specific bearer;
the communication unit 44 is further configured to send the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource.
Wherein the second specific bearer is a bearer that does not require enhancement. The second specific bearer may be, for example, a QCI 1 bearer that does not require enhancement.
Specifically, when the monitoring unit 43 monitors data transmission of the user (specifically, the user performing scheduling on the first specific bearer) on the QCI 1 bearer, indicating that the QCI 1 bearer of the user is established and data transmission is performed, the uplink interference avoidance scheme for the user is closed. In a specific application, a time range for executing the uplink interference avoidance scheme may be preconfigured between the base stations, for example, 1 ms, 2ms, and the like. When the monitoring unit 43 monitors that there is a scheduling request of a user on a first specific bearer, determining an uplink resource of the scheduling request, and the communication unit 44 sends the uplink resource to other base stations except the base station; the time range in which the other base stations do not allow the uplink resources to be used is the configured time range; after the time of the time range is reached, the other base stations perform scheduling according to their own scheduling principles, and of course, the uplink resources may also be used. Therefore, after the monitoring unit 43 monitors that there is data transmission of the user on the second specific bearer, the other base stations do not need to be notified, and the other base stations may also use the uplink resource. On the other hand, when the data transmission of the user on the second specific bearer is not monitored, the monitoring unit 43 continues to use the uplink interference avoidance scheme for the user, determines the uplink resource of the scheduling request again, and sends the uplink resource to the other base stations except the base station, so that the other base stations avoid using the uplink resource.
In an embodiment, the control unit 42 is further configured to control to switch from the interference avoidance state to the normal state when the interference avoidance state is present and the obtaining unit 41 obtains that the first characteristic parameter is not greater than the first threshold.
In this embodiment, in the interference avoidance state, the monitoring unit 43 may monitor whether a scheduling request exists on a first specific bearer (for example, a QCI5 bearer); when a scheduling request of a user A exists, executing an interference avoidance scheme of the user A, and stopping the interference avoidance of the user A when the situation that the user A has data transmission on a QCI 1 bearer is monitored. However, when the monitoring unit 43 monitors that the user B has a scheduling request on a first specific bearer (for example, a QCI5 bearer), the interference avoidance scheme of the user B is further executed, which is the same as that of the user a and is not described herein again. However, when the obtaining unit 41 obtains that the first characteristic parameter is not greater than the first threshold, the control is directly switched to the normal state, and an interference avoidance scheme is not executed for any user.
In the embodiment of the present invention, the control Unit 42 and the monitoring Unit 43 in the base station may be implemented by a Central Processing Unit (CPU), a Digital Signal Processor (DSP), a micro control Unit 42 (MCU), or a Programmable Gate Array (FPGA) in the base station in practical application; the obtaining unit 41 and the communication unit 44 in the base station can be implemented by a communication module (including a basic communication suite, an operating system, a communication module, a standardized interface, a protocol, etc.) and a transceiver antenna in practical application.
By adopting the technical scheme of the embodiment of the invention, before the SRVCC is effectively triggered, the success rate of VoLTE call initiation in a high-interference area is improved on the premise of not increasing extra time delay; and on the other hand, the VoLTE call-starting time delay of a high-interference area is also reduced.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of the unit is only a logical functional division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
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: a mobile storage device, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a base station, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic or optical disk, or various other media that can store program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A method of scheduling, the method comprising:
a base station obtains a first characteristic parameter representing uplink interference;
when the first characteristic parameter is larger than a first threshold value, controlling to be switched from a normal state to an interference avoidance state;
monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state;
when a scheduling request of a user exists on the first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to other base stations except the base station so that the other base stations avoid using the uplink resource;
when the data transmission of the user on a second specific bearer is not monitored, determining the uplink resource of the scheduling request again, and sending the uplink resource to other base stations except the base station so that the other base stations avoid using the uplink resource;
when the data transmission of the user is monitored on the second specific bearer, closing an uplink interference avoidance scheme aiming at the user;
wherein the first specific bearer is a first specific quality of service class identification (QCI) bearer that needs to be enhanced, and the second specific bearer is a second specific QCI bearer that does not need to be enhanced.
2. The method of claim 1, further comprising: and when the interference avoidance state is achieved and the first characteristic parameter is not larger than the first threshold value, controlling the interference avoidance state to be switched to the normal state.
3. The method of claim 1, wherein when it is monitored that a scheduling request of a user exists on a first specific bearer, determining an uplink resource of the scheduling request, and sending the uplink resource to a base station other than the base station comprises:
when the condition that a scheduling request of a user exists on a first specific bearer is monitored, performing uplink pre-scheduling on the scheduling request, and determining uplink resources of the uplink pre-scheduling; sending the uplink resource to other base stations except the base station within a first preset time range;
and scheduling the data of the user on the first specific bearer by using the uplink resources pre-scheduled by the uplink within a second preset time range.
4. A base station, characterized in that the base station comprises: the device comprises an acquisition unit, a control unit, a monitoring unit and a communication unit; wherein the content of the first and second substances,
the acquiring unit is used for acquiring a first characteristic parameter representing uplink interference;
the control unit is used for controlling the normal state to be switched to the interference avoidance state when the first characteristic parameter obtained by the obtaining unit is larger than a first threshold value;
the monitoring unit is used for monitoring whether a scheduling request of a user exists on a first specific bearer or not in the interference avoidance state; when a scheduling request of a user exists on the first specific bearer, determining uplink resources of the scheduling request;
the communication unit is used for sending the uplink resource to other base stations except the base station so as to enable the other base stations to avoid using the uplink resource;
the monitoring unit is further configured to monitor whether data transmission of the user exists on a second specific bearer; when the data transmission of the user on a second specific bearer is not monitored, determining the uplink resource of the scheduling request again; the communication unit is further configured to send the uplink resource to other base stations except the base station, so that the other base stations avoid using the uplink resource;
the monitoring unit is further configured to close an uplink interference avoidance scheme for the user when data transmission of the user is monitored on the second specific bearer;
wherein the first specific bearer is a first specific quality of service class identification (QCI) bearer that needs to be enhanced, and the second specific bearer is a second specific QCI bearer that does not need to be enhanced.
5. The base station according to claim 4, wherein the control unit is further configured to control to switch from the interference avoidance state to the normal state when the interference avoidance state is present and the obtaining unit obtains that the first characteristic parameter is not greater than the first threshold.
6. The base station according to claim 4, wherein the monitoring unit is configured to perform uplink pre-scheduling on the scheduling request when it is monitored that the scheduling request of the user exists on the first specific bearer, and determine an uplink resource of the uplink pre-scheduling;
the communication unit is used for sending the uplink resource to other base stations except the base station within a first preset time range; and the second specific bearer is used for scheduling the data of the user on the first specific bearer by using the uplink resources pre-scheduled by the uplink in a second preset time range.
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| CN111132323B (en) * | 2018-11-01 | 2022-07-22 | 大唐移动通信设备有限公司 | Pre-scheduling control method and device |
| CN113677031B (en) * | 2020-05-13 | 2024-02-27 | 中国移动通信集团重庆有限公司 | Terminal uplink resource scheduling method and device, computing equipment and computer storage medium |
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